In this study,an innovative solution is developed for vibration suppression of the high-rise building.The infinite dimensional system model has been presented for describing high-rise building structures which have a ...In this study,an innovative solution is developed for vibration suppression of the high-rise building.The infinite dimensional system model has been presented for describing high-rise building structures which have a large inertial load with the help of the Hamilton’s principle.On the basis of this system model and with the use of the Lyapunov’s direct method,a boundary controller is proposed and the closed-loop system is uniformly bounded in the time domain.Finally,by using the Smart Structure laboratory platform which is produced by Quancer,we conduct a set of experiments and find that the designed method is resultful.展开更多
This paper presents the restraining moments of outriggers acting on the core wall and the equation of the horizontal top deflection based on a simplified outrigger model. The deformation compatibility conditions betwe...This paper presents the restraining moments of outriggers acting on the core wall and the equation of the horizontal top deflection based on a simplified outrigger model. The deformation compatibility conditions between outriggers and core wall as well as the finite rigidities of outriggers are also considered. One case study was carried out to analyze the horizontal top deflection and the mutation of the restraining moments caused by the variation of outrigger location. The results showed that the method adopted in the paper is simple and reasonable. Some conclusions are valuable to the safety design of high-rise building structures.展开更多
Many studies have been undertaken to predict local scour around offshore high-rise structure foundations(HRSFs),which have been used in constructing the Donghai Wind Farm in China.However,there have been few works on ...Many studies have been undertaken to predict local scour around offshore high-rise structure foundations(HRSFs),which have been used in constructing the Donghai Wind Farm in China.However,there have been few works on the turbulent flow that drives the scour process.In this study,the characteristics of the turbulent flow fields around an HRSF were investigated using the particle image velocimetry technique.The mean flow,vorticity,and turbulence intensity were analyzed in detail.The relationship between the flow feature and scour development around an HRSF was elaborated.The results showed that the flow velocity increased to its maximum value near the third row of the pile group.The shear layer and wake vortices could not be fully developed downstream of the last row of the piles at small Reynolds numbers.The strong flow and turbulent fluctuation near the third piles explained the existence of a longtail scour pattern starting from the HRSF shoulders and a trapezoidal deposition region directly downstream of HRSF.This laboratory experiment gains insight into the mechanism of the turbulent flow around HRSFs and provides a rare dataset for numerical model verifications.展开更多
The purpose of this paper is to discuss the suitability of out-of-codes tall slab-column and shearwall structure and to popularize the structure in seismic region.In the research,flat-plate floor was used in slab-colu...The purpose of this paper is to discuss the suitability of out-of-codes tall slab-column and shearwall structure and to popularize the structure in seismic region.In the research,flat-plate floor was used in slab-column and shearwall structure in the practical engineering,the key parameters of slab-column and shearwall structure and frame-shearwall structure such as deflection,punching shear behavior,story drift and capability curve were worked out by static plastic analysis,elastic-plastic time history analysis and pushover analysis,then the suitability of out-of-codes tall slab-column and shearwall structure was evaluated.The results show that the out-of-codes tall slab-column and shearwall structure studies could satisfy the require of deflection and punching shear behavior,the story drift under 7 degree expected rare earthquake waves could satisfy the limit value in the codes and the seismic design spectrum was crossed by the capability curve of the structure and the structure could not collapse.The conclusion is that slab-column and shearwall structure with reasonable design built in Ⅱ soil site of intensity 7 seismic fortification zone can be designed higher than the limit height in the codes.展开更多
First, the high-rise building structure design process is divided into three relevant steps, that is, scheme generation and creation, performance evaluation, and scheme optimization. Then with the application of relat...First, the high-rise building structure design process is divided into three relevant steps, that is, scheme generation and creation, performance evaluation, and scheme optimization. Then with the application of relational database, the case database of high-rise structures is constructed, the structure form-selection designing methods such as the smart algorithm based on CBR, DM, FINS, NN and GA is presented, and the original forms system of this method and its general structure are given. CBR and DM are used to generate scheme candidates; FINS and NN to evaluate and optimize the scheme performance; GA to create new structure forms. Finally, the application cases are presented, whose results fit in with the real project. It proves by combining and using the expert intelligence, algorithm intelligence and machine intelligence that this method makes good use of not only the engineering project knowledge and expertise but also much deeper knowledge contained in various engineering cases. In other words, it is because the form selection has a strong background support of vast real cases that its results prove more reliable and more acceptable. So the introduction of this method provides an effective approach to improving the quality, efficiency, automatic and smart level of high-rise structures form selection design.展开更多
Because of urbanization,land resources in China’s cities has become increasingly scarce.Therefore,modern buildings are becoming taller,making high-rise steel frame structures the new favorite of the construction indu...Because of urbanization,land resources in China’s cities has become increasingly scarce.Therefore,modern buildings are becoming taller,making high-rise steel frame structures the new favorite of the construction industry.However,the construction of high-rise steel frame structures requires advanced technology.If the construction technology is effectively implemented and the welding techniques of the construction personnel align with the requirements for high-rise steel frame structures,it can help mitigate deformations in the steel structure,thus preserving the overall construction quality of high-rise steel frame structures.To enhance the applicability of steel frame structures in high-rise buildings,this paper focuses on analyzing the optimization path for the construction process of high-rise steel frame structures.It introduces a tailored approach to control welding-induced deformations in steel frame structures,aiming to make a valuable contribution to the advancement of China’s construction industry.展开更多
Compared with traditional buildings, high-rise concrete buildings are obviously different. Due to their higher height, stability problems will be involved, which also brings great difficulty to the structural design a...Compared with traditional buildings, high-rise concrete buildings are obviously different. Due to their higher height, stability problems will be involved, which also brings great difficulty to the structural design and construction of high-rise concrete buildings, especially in the aspect of earthquake resistance, which has become one of the important measurement standards for the structural design and construction quality of current high-rise concrete buildings. Therefore, attention should be paid to the design of earthquake-resistant structures of high-rise concrete buildings. This paper mainly analyzes the relevant contents of the seismic structural design of high-rise concrete buildings, firstly introduces the importance of the seismic structural design of high-rise concrete buildings, and expounds the characteristics of the high-rise concrete buildings damaged by the earthquake, then analyzes the shortcomings of the current seismic structural design of high-rise concrete buildings, and finally puts forward some key points of design ideas, in order to provide some reference for the improvement of the seismic level of high-rise concrete buildings in our country.展开更多
With the rapid development of China＇s economy, the modernization drive and the process of urbanization continue to advance, land for urban construction is becoming more and tenser and land prices are rising steadily,...With the rapid development of China＇s economy, the modernization drive and the process of urbanization continue to advance, land for urban construction is becoming more and tenser and land prices are rising steadily, there are more and more high-rise buildings, its density is also increasing. With the increasing number trend of high-rise building development, anti-seismic building requirement as an important part of architectural design is worthy of our exploration and study. Seismic resistance has become an important subject of engineering design. This paper will discuss the technical principle of seismic design in building structure design, so as to optimize the seismic design of high-rise building structure better.展开更多
In recent years, China's economic development speed is rapid, which provide good conditions for the development of all walks of life. On this basis, in order to better meet people's actual needs, China's c...In recent years, China's economic development speed is rapid, which provide good conditions for the development of all walks of life. On this basis, in order to better meet people's actual needs, China's construction industry has increased its importance to the quality of high-rise buildings. Shear wall structure design is an important content in the design of high-rise buildings, which promotes the design optimization of shear wall structure and can effectively improve the quality of high-rise buildings. This paper conducts in-depth analysis and discussion on the optimization design of shear wall structure of high-rise buildings in China, and provides a good reference for the development of China's construction industry.展开更多
As civil engineering technology development,the structural form selection is more and more critical in design of high-rise buildings.However,structural form selection involves expertise knowledge and changes with the ...As civil engineering technology development,the structural form selection is more and more critical in design of high-rise buildings.However,structural form selection involves expertise knowledge and changes with the environment which makes the task arduous.An approach utilizing improved back propagation(BP)neural network optimized by the Levenberg-Marquardt(L-M)algorithm is proposed to extract the main controlling factors of structural form selection.Then,an intelligent expert system with artificial neural network is constructed to design high-rise buildings structure effectively.The experiment tests the model in 15 well-known architecture samples and get the prediction accuracy of 93.33%.The results show that the method is feasible and can help designers select the appropriate structural form.展开更多
With the continuous expansion of steel structure construction scale, more and more quality problems are exposed in the construction process. At this stage, some construction workers have not fully grasped the key poin...With the continuous expansion of steel structure construction scale, more and more quality problems are exposed in the construction process. At this stage, some construction workers have not fully grasped the key points of construction quality, so inferior engineering problems occur from time to time. The construction activities of high-rise steel structures are complicated, and there are a series of hidden risks on the site. Through reasonable and effective safety management, safety accidents can be avoided to the greatest extent, and the safety of life and property of construction workers can be maintained. This paper focuses on the key points of steel structure safety control in high-rise buildings.展开更多
With the continuous advancement of urbanization, urban residents requirements for quality of life are getting higher and higher, and concrete high-rise buildings are more and more popular, and gradually become an impo...With the continuous advancement of urbanization, urban residents requirements for quality of life are getting higher and higher, and concrete high-rise buildings are more and more popular, and gradually become an important structural form. The stability of the structure is required to be high. Because of its complex structure, the seismic performance of high-rise concrete structures has always been a common concern, and it is also an important index to measure the engineering quality and safety. Therefore, in the construction of high-rise concrete structure, it is necessary to analyze its seismic performance in many aspects. Based on this, this paper first briefly analyzes the damage ways of high-rise concrete buildings caused by earthquakes from two aspects, then analyzes the key factors and control strategies that affect the design of high-rise concrete structures from four aspects, then summarizes the performance requirements of high-rise concrete structures from four aspects, then discusses the present situation of high-rise concrete structures design from three aspects, and finally puts forward the key points of high-rise concrete structures design from eight aspects, so as to provide references and exchanges for relevant people.展开更多
At present, there is lateral displacement in high-rise buildings, so in the design process, high-rise buildings should not only provide good strength, but also have enough rigidity to minimize the displacement level b...At present, there is lateral displacement in high-rise buildings, so in the design process, high-rise buildings should not only provide good strength, but also have enough rigidity to minimize the displacement level between resistance layers. High-rise buildings are gradually developed along with the development and progress of social production and the needs of human life. To a certain extent, they are the result of the development of cities, industries and businesses. The progress of construction technology, the appearance of lightweight and high-strength materials, and the wide application of mechanization, electrification and computers in the construction industry also provide the necessary material conditions and technical guarantee for the development of buildings. When a large-scale high-rise building collapses due to earthquake, the planning process should not only reach the required strength, but also formulate an appropriate optimal design scheme for the whole building, so as to improve the overall bearing capacity of the building and prolong the service life of the high-rise building. Based on this, this paper briefly introduces the concrete structure of high-rise buildings, analyzes the design factors and methods of high-rise buildings concrete structures, and puts forward relevant measures for the optimal design of high-rise buildings concrete structures, for reference of relevant people.展开更多
In the last few decades structure optimisation has become a main task in a civil engineering project. As a matter of fact, due to the complexity and particularity of every structure, the great amount of variables and ...In the last few decades structure optimisation has become a main task in a civil engineering project. As a matter of fact, due to the complexity and particularity of every structure, the great amount of variables and design criteria to considerate and many other factors, a general optimisation’s method is not simple to formulate. As a result, this paper focuses on how to provide a successful optimisation method for a particular building type, high-rise reinforced concrete buildings. The optimization method is based on decomposition of the main structure into substructures: floor system, vertical load resisting system, lateral load resisting system and foundation system;then each of the subsystems using the design criteria established at the building codes is improved. Due to the effect of the superstructure optimisation on the foundation system, vertical and lateral load resisting system is the last to be considered after the improvement of floor. Finally, as a case example, using the method explained in the paper, a 30-story-high high-rise residential building complex is analysed and optimised, achieving good results in terms of structural behaviour and diminishing the overall cost of the structure.展开更多
Flexible housing resolves the fundamental conflicts between the long-standing structure and the evolving demands.We propose a computational method of optimizing the structural layout of high-rise residential buildings...Flexible housing resolves the fundamental conflicts between the long-standing structure and the evolving demands.We propose a computational method of optimizing the structural layout of high-rise residential buildings.Chinese high-rise apartment buildings have widely employed shear wall-frame structure in which one big room or multiple small rooms could occupy the same span.Fitting multiple floor plans into a fixed sparse scheme of shear walls and columns is feasible.We developed a computational framework to seek flexible structural schemes.A building scheme consists of a circulation core,shear walls,columns,and boundaries.The computer program automatically adapts floor plans to any drawn or generated scheme.Based on a large dataset of apartment layouts,the number of apartments that fit into a building scheme statistically reflects the flexibility of the scheme.If many hypothetical plans can fit into a wallframe structure in computer simulation,this structure could probably support several generations of unknown plans.Such a data-driven computational method provides the possibility of creating a one-to-many mapping between permanent structure and evolving apartment plans.展开更多
High-rise buildings are an important branch of civil engineering. When constructing high-rise building structures according to the construction conditions of civil engineering, it is necessary to determine an accurate...High-rise buildings are an important branch of civil engineering. When constructing high-rise building structures according to the construction conditions of civil engineering, it is necessary to determine an accurate and reasonable construction plan according to the correlation between civil engineering and high-rise buildings, and strengthen the application value of various technologies in it. This paper studies the construction of high-rise building structures. In the early stage of construction of high-rise building structures in civil engineering, it is necessary to analyze the types and characteristics of high-rise building structures and determine the construction requirements of high-rise building structures related to civil engineering construction. Determine the technologies related to the construction of high-rise building structures, ensure the rationality and effectiveness of various technologies, and promote the smooth construction of high-rise building structures with the help of reasonable technologies.展开更多
At present, with the rapid development of Chinas construction, high-rise buildings are constantly emerging, and in high-rise buildings, the structural design of civil air defense projects has made great progress. In h...At present, with the rapid development of Chinas construction, high-rise buildings are constantly emerging, and in high-rise buildings, the structural design of civil air defense projects has made great progress. In high-rise buildings, the structural design of civil air defense works is very critical. In order to ensure the safety of peoples lives and property in wars and earthquakes, scientific and reasonable design must be carried out. Based on this, this paper firstly briefly analyzes the overview of civil air defense engineering from two aspects, then analyzes the characteristics of structural design of civil air defense engineering in high-rise buildings from three aspects, then discusses the principles and requirements that should be followed in structural design of civil air defense engineering in high-rise buildings from two aspects, and finally puts forward the key points of structural design of civil air defense engineering in high-rise buildings from eight aspects, so as to provide references and exchanges for relevant people.展开更多
In the current construction process of high-rise buildings, the structural design of civil air defense projects in high-rise buildings is often closely related to the safety of peoples lives and property. Therefore, a...In the current construction process of high-rise buildings, the structural design of civil air defense projects in high-rise buildings is often closely related to the safety of peoples lives and property. Therefore, at present, in the construction planning of high-rise building structures, people pay more and more attention to the design of civil air defense structures. In the process of viewpoint discussion, this paper explains and analyzes the viewpoints around the design requirements and key points of the current civil air defense engineering structure of high-rise buildings. Based on the analysis, it plays a certain role in promoting the design of civil air defense engineering structure of high-rise buildings, and promotes the design connotation of civil air defense engineering structure of high-rise buildings.展开更多
This paper provides a review on the development of structural monitoring in Japan, with an emphasis on the type, strategy, and utilization of monitoring systems. The review focuses on bridge and building structures us...This paper provides a review on the development of structural monitoring in Japan, with an emphasis on the type, strategy, and utilization of monitoring systems. The review focuses on bridge and building structures using vibration-based techniques. Structural monitoring systems in Japan historically started with the objective of evaluating structural responses against extreme events. In the development of structural monitoring, monitoring systems and collected data were used to verify design assumptions, update speci cations, and facilitate the ef cacy of vibration control systems. Strategies and case studies on monitoring for the design veri cation of long-span bridges and tall buildings, the performance of seismic isolation systems in building and bridges, the veri cation of structural retro t, the veri cation of structural control systems (passive, semi-active, and active), structural assessment, and damage detec- tion are described. More recently, the application of monitoring systems has been extended to facilitate ef cient operation and effective maintenance through the rationalization of risk and asset management using monitoring data. This paper also summarizes the lessons learned and feedback obtained from case studies on the structural monitoring of bridges and buildings in Japan.展开更多
The main concern of this paper is to provide an extensive study for the structural behavior of low/medium/high rise office buildings aiming to deepen structure and architect designers understanding for such type of bu...The main concern of this paper is to provide an extensive study for the structural behavior of low/medium/high rise office buildings aiming to deepen structure and architect designers understanding for such type of buildings. The study is performed on reinforced concrete and emphasized only on Kuwait city conditions for wind. Regular layout plan building with different heights ranging from five to fifty typical office stories are investigated in this study. Three dimensional finite element techniques through ETABS software are used in conducting analysis for structures presented here-in. A serviceability study is performed to ensure that buildings have sufficient stability to limit lateral drift and peak acceleration within the acceptable range of occupancy comfort. In addition, an ultimate strength study is carried out to design and verify that all the structural elements are designed to withstand factored gravity and lateral loadings in a safe manner according to the international building codes. The building slenderness ratio and the building core size and location are the studied parameters since they are the key drivers for the efficient structural design. Analysis results are presented and discussed and finally conclusions are summarized as guidelines for designers of concrete office buildings in Kuwait.展开更多
基金supported in part by the National Natural Science Foundation of China(61933001,62061160371,62003029)Beijing Natural Science Foundation(JQ20026)Beijing Top Discipline for Artificial Intelligent Science and Engineering,University of Science and Technology Beijing。
文摘In this study,an innovative solution is developed for vibration suppression of the high-rise building.The infinite dimensional system model has been presented for describing high-rise building structures which have a large inertial load with the help of the Hamilton’s principle.On the basis of this system model and with the use of the Lyapunov’s direct method,a boundary controller is proposed and the closed-loop system is uniformly bounded in the time domain.Finally,by using the Smart Structure laboratory platform which is produced by Quancer,we conduct a set of experiments and find that the designed method is resultful.
基金Project supported by the National Natural Science Foundation of China (No. 50378041) and the Specialized Research Fund for theDoctoral Program of Higher Education (No. 20030487016), China
文摘This paper presents the restraining moments of outriggers acting on the core wall and the equation of the horizontal top deflection based on a simplified outrigger model. The deformation compatibility conditions between outriggers and core wall as well as the finite rigidities of outriggers are also considered. One case study was carried out to analyze the horizontal top deflection and the mutation of the restraining moments caused by the variation of outrigger location. The results showed that the method adopted in the paper is simple and reasonable. Some conclusions are valuable to the safety design of high-rise building structures.
基金supported by the National Key Research and Development Program of China(Grant No.2016YFC0402605)the National Natural Science Foundation of China(Grant No.51779080)+2 种基金the Fok Ying Tung Education Foundation(Grant No.20190094210001)the Natural Science Foundation of Jiangsu Province(Grant No.BK20191299)the 111 Project of the Ministry of Education and State Administration of Foreign Expert Affairs of China(Grant No.B17015).
文摘Many studies have been undertaken to predict local scour around offshore high-rise structure foundations(HRSFs),which have been used in constructing the Donghai Wind Farm in China.However,there have been few works on the turbulent flow that drives the scour process.In this study,the characteristics of the turbulent flow fields around an HRSF were investigated using the particle image velocimetry technique.The mean flow,vorticity,and turbulence intensity were analyzed in detail.The relationship between the flow feature and scour development around an HRSF was elaborated.The results showed that the flow velocity increased to its maximum value near the third row of the pile group.The shear layer and wake vortices could not be fully developed downstream of the last row of the piles at small Reynolds numbers.The strong flow and turbulent fluctuation near the third piles explained the existence of a longtail scour pattern starting from the HRSF shoulders and a trapezoidal deposition region directly downstream of HRSF.This laboratory experiment gains insight into the mechanism of the turbulent flow around HRSFs and provides a rare dataset for numerical model verifications.
文摘The purpose of this paper is to discuss the suitability of out-of-codes tall slab-column and shearwall structure and to popularize the structure in seismic region.In the research,flat-plate floor was used in slab-column and shearwall structure in the practical engineering,the key parameters of slab-column and shearwall structure and frame-shearwall structure such as deflection,punching shear behavior,story drift and capability curve were worked out by static plastic analysis,elastic-plastic time history analysis and pushover analysis,then the suitability of out-of-codes tall slab-column and shearwall structure was evaluated.The results show that the out-of-codes tall slab-column and shearwall structure studies could satisfy the require of deflection and punching shear behavior,the story drift under 7 degree expected rare earthquake waves could satisfy the limit value in the codes and the seismic design spectrum was crossed by the capability curve of the structure and the structure could not collapse.The conclusion is that slab-column and shearwall structure with reasonable design built in Ⅱ soil site of intensity 7 seismic fortification zone can be designed higher than the limit height in the codes.
文摘First, the high-rise building structure design process is divided into three relevant steps, that is, scheme generation and creation, performance evaluation, and scheme optimization. Then with the application of relational database, the case database of high-rise structures is constructed, the structure form-selection designing methods such as the smart algorithm based on CBR, DM, FINS, NN and GA is presented, and the original forms system of this method and its general structure are given. CBR and DM are used to generate scheme candidates; FINS and NN to evaluate and optimize the scheme performance; GA to create new structure forms. Finally, the application cases are presented, whose results fit in with the real project. It proves by combining and using the expert intelligence, algorithm intelligence and machine intelligence that this method makes good use of not only the engineering project knowledge and expertise but also much deeper knowledge contained in various engineering cases. In other words, it is because the form selection has a strong background support of vast real cases that its results prove more reliable and more acceptable. So the introduction of this method provides an effective approach to improving the quality, efficiency, automatic and smart level of high-rise structures form selection design.
文摘Because of urbanization,land resources in China’s cities has become increasingly scarce.Therefore,modern buildings are becoming taller,making high-rise steel frame structures the new favorite of the construction industry.However,the construction of high-rise steel frame structures requires advanced technology.If the construction technology is effectively implemented and the welding techniques of the construction personnel align with the requirements for high-rise steel frame structures,it can help mitigate deformations in the steel structure,thus preserving the overall construction quality of high-rise steel frame structures.To enhance the applicability of steel frame structures in high-rise buildings,this paper focuses on analyzing the optimization path for the construction process of high-rise steel frame structures.It introduces a tailored approach to control welding-induced deformations in steel frame structures,aiming to make a valuable contribution to the advancement of China’s construction industry.
文摘Compared with traditional buildings, high-rise concrete buildings are obviously different. Due to their higher height, stability problems will be involved, which also brings great difficulty to the structural design and construction of high-rise concrete buildings, especially in the aspect of earthquake resistance, which has become one of the important measurement standards for the structural design and construction quality of current high-rise concrete buildings. Therefore, attention should be paid to the design of earthquake-resistant structures of high-rise concrete buildings. This paper mainly analyzes the relevant contents of the seismic structural design of high-rise concrete buildings, firstly introduces the importance of the seismic structural design of high-rise concrete buildings, and expounds the characteristics of the high-rise concrete buildings damaged by the earthquake, then analyzes the shortcomings of the current seismic structural design of high-rise concrete buildings, and finally puts forward some key points of design ideas, in order to provide some reference for the improvement of the seismic level of high-rise concrete buildings in our country.
文摘With the rapid development of China＇s economy, the modernization drive and the process of urbanization continue to advance, land for urban construction is becoming more and tenser and land prices are rising steadily, there are more and more high-rise buildings, its density is also increasing. With the increasing number trend of high-rise building development, anti-seismic building requirement as an important part of architectural design is worthy of our exploration and study. Seismic resistance has become an important subject of engineering design. This paper will discuss the technical principle of seismic design in building structure design, so as to optimize the seismic design of high-rise building structure better.
文摘In recent years, China's economic development speed is rapid, which provide good conditions for the development of all walks of life. On this basis, in order to better meet people's actual needs, China's construction industry has increased its importance to the quality of high-rise buildings. Shear wall structure design is an important content in the design of high-rise buildings, which promotes the design optimization of shear wall structure and can effectively improve the quality of high-rise buildings. This paper conducts in-depth analysis and discussion on the optimization design of shear wall structure of high-rise buildings in China, and provides a good reference for the development of China's construction industry.
基金Supported by the National Natural Science Foundation of China(No.61871021,51704115)。
文摘As civil engineering technology development,the structural form selection is more and more critical in design of high-rise buildings.However,structural form selection involves expertise knowledge and changes with the environment which makes the task arduous.An approach utilizing improved back propagation(BP)neural network optimized by the Levenberg-Marquardt(L-M)algorithm is proposed to extract the main controlling factors of structural form selection.Then,an intelligent expert system with artificial neural network is constructed to design high-rise buildings structure effectively.The experiment tests the model in 15 well-known architecture samples and get the prediction accuracy of 93.33%.The results show that the method is feasible and can help designers select the appropriate structural form.
文摘With the continuous expansion of steel structure construction scale, more and more quality problems are exposed in the construction process. At this stage, some construction workers have not fully grasped the key points of construction quality, so inferior engineering problems occur from time to time. The construction activities of high-rise steel structures are complicated, and there are a series of hidden risks on the site. Through reasonable and effective safety management, safety accidents can be avoided to the greatest extent, and the safety of life and property of construction workers can be maintained. This paper focuses on the key points of steel structure safety control in high-rise buildings.
文摘With the continuous advancement of urbanization, urban residents requirements for quality of life are getting higher and higher, and concrete high-rise buildings are more and more popular, and gradually become an important structural form. The stability of the structure is required to be high. Because of its complex structure, the seismic performance of high-rise concrete structures has always been a common concern, and it is also an important index to measure the engineering quality and safety. Therefore, in the construction of high-rise concrete structure, it is necessary to analyze its seismic performance in many aspects. Based on this, this paper first briefly analyzes the damage ways of high-rise concrete buildings caused by earthquakes from two aspects, then analyzes the key factors and control strategies that affect the design of high-rise concrete structures from four aspects, then summarizes the performance requirements of high-rise concrete structures from four aspects, then discusses the present situation of high-rise concrete structures design from three aspects, and finally puts forward the key points of high-rise concrete structures design from eight aspects, so as to provide references and exchanges for relevant people.
文摘At present, there is lateral displacement in high-rise buildings, so in the design process, high-rise buildings should not only provide good strength, but also have enough rigidity to minimize the displacement level between resistance layers. High-rise buildings are gradually developed along with the development and progress of social production and the needs of human life. To a certain extent, they are the result of the development of cities, industries and businesses. The progress of construction technology, the appearance of lightweight and high-strength materials, and the wide application of mechanization, electrification and computers in the construction industry also provide the necessary material conditions and technical guarantee for the development of buildings. When a large-scale high-rise building collapses due to earthquake, the planning process should not only reach the required strength, but also formulate an appropriate optimal design scheme for the whole building, so as to improve the overall bearing capacity of the building and prolong the service life of the high-rise building. Based on this, this paper briefly introduces the concrete structure of high-rise buildings, analyzes the design factors and methods of high-rise buildings concrete structures, and puts forward relevant measures for the optimal design of high-rise buildings concrete structures, for reference of relevant people.
文摘In the last few decades structure optimisation has become a main task in a civil engineering project. As a matter of fact, due to the complexity and particularity of every structure, the great amount of variables and design criteria to considerate and many other factors, a general optimisation’s method is not simple to formulate. As a result, this paper focuses on how to provide a successful optimisation method for a particular building type, high-rise reinforced concrete buildings. The optimization method is based on decomposition of the main structure into substructures: floor system, vertical load resisting system, lateral load resisting system and foundation system;then each of the subsystems using the design criteria established at the building codes is improved. Due to the effect of the superstructure optimisation on the foundation system, vertical and lateral load resisting system is the last to be considered after the improvement of floor. Finally, as a case example, using the method explained in the paper, a 30-story-high high-rise residential building complex is analysed and optimised, achieving good results in terms of structural behaviour and diminishing the overall cost of the structure.
基金This work was supported by the National Natural Science Foundation of China(Grant No.52278008).
文摘Flexible housing resolves the fundamental conflicts between the long-standing structure and the evolving demands.We propose a computational method of optimizing the structural layout of high-rise residential buildings.Chinese high-rise apartment buildings have widely employed shear wall-frame structure in which one big room or multiple small rooms could occupy the same span.Fitting multiple floor plans into a fixed sparse scheme of shear walls and columns is feasible.We developed a computational framework to seek flexible structural schemes.A building scheme consists of a circulation core,shear walls,columns,and boundaries.The computer program automatically adapts floor plans to any drawn or generated scheme.Based on a large dataset of apartment layouts,the number of apartments that fit into a building scheme statistically reflects the flexibility of the scheme.If many hypothetical plans can fit into a wallframe structure in computer simulation,this structure could probably support several generations of unknown plans.Such a data-driven computational method provides the possibility of creating a one-to-many mapping between permanent structure and evolving apartment plans.
文摘High-rise buildings are an important branch of civil engineering. When constructing high-rise building structures according to the construction conditions of civil engineering, it is necessary to determine an accurate and reasonable construction plan according to the correlation between civil engineering and high-rise buildings, and strengthen the application value of various technologies in it. This paper studies the construction of high-rise building structures. In the early stage of construction of high-rise building structures in civil engineering, it is necessary to analyze the types and characteristics of high-rise building structures and determine the construction requirements of high-rise building structures related to civil engineering construction. Determine the technologies related to the construction of high-rise building structures, ensure the rationality and effectiveness of various technologies, and promote the smooth construction of high-rise building structures with the help of reasonable technologies.
文摘At present, with the rapid development of Chinas construction, high-rise buildings are constantly emerging, and in high-rise buildings, the structural design of civil air defense projects has made great progress. In high-rise buildings, the structural design of civil air defense works is very critical. In order to ensure the safety of peoples lives and property in wars and earthquakes, scientific and reasonable design must be carried out. Based on this, this paper firstly briefly analyzes the overview of civil air defense engineering from two aspects, then analyzes the characteristics of structural design of civil air defense engineering in high-rise buildings from three aspects, then discusses the principles and requirements that should be followed in structural design of civil air defense engineering in high-rise buildings from two aspects, and finally puts forward the key points of structural design of civil air defense engineering in high-rise buildings from eight aspects, so as to provide references and exchanges for relevant people.
文摘In the current construction process of high-rise buildings, the structural design of civil air defense projects in high-rise buildings is often closely related to the safety of peoples lives and property. Therefore, at present, in the construction planning of high-rise building structures, people pay more and more attention to the design of civil air defense structures. In the process of viewpoint discussion, this paper explains and analyzes the viewpoints around the design requirements and key points of the current civil air defense engineering structure of high-rise buildings. Based on the analysis, it plays a certain role in promoting the design of civil air defense engineering structure of high-rise buildings, and promotes the design connotation of civil air defense engineering structure of high-rise buildings.
文摘This paper provides a review on the development of structural monitoring in Japan, with an emphasis on the type, strategy, and utilization of monitoring systems. The review focuses on bridge and building structures using vibration-based techniques. Structural monitoring systems in Japan historically started with the objective of evaluating structural responses against extreme events. In the development of structural monitoring, monitoring systems and collected data were used to verify design assumptions, update speci cations, and facilitate the ef cacy of vibration control systems. Strategies and case studies on monitoring for the design veri cation of long-span bridges and tall buildings, the performance of seismic isolation systems in building and bridges, the veri cation of structural retro t, the veri cation of structural control systems (passive, semi-active, and active), structural assessment, and damage detec- tion are described. More recently, the application of monitoring systems has been extended to facilitate ef cient operation and effective maintenance through the rationalization of risk and asset management using monitoring data. This paper also summarizes the lessons learned and feedback obtained from case studies on the structural monitoring of bridges and buildings in Japan.
文摘The main concern of this paper is to provide an extensive study for the structural behavior of low/medium/high rise office buildings aiming to deepen structure and architect designers understanding for such type of buildings. The study is performed on reinforced concrete and emphasized only on Kuwait city conditions for wind. Regular layout plan building with different heights ranging from five to fifty typical office stories are investigated in this study. Three dimensional finite element techniques through ETABS software are used in conducting analysis for structures presented here-in. A serviceability study is performed to ensure that buildings have sufficient stability to limit lateral drift and peak acceleration within the acceptable range of occupancy comfort. In addition, an ultimate strength study is carried out to design and verify that all the structural elements are designed to withstand factored gravity and lateral loadings in a safe manner according to the international building codes. The building slenderness ratio and the building core size and location are the studied parameters since they are the key drivers for the efficient structural design. Analysis results are presented and discussed and finally conclusions are summarized as guidelines for designers of concrete office buildings in Kuwait.
