Different criteria and factors are used in different methods of soft soil foundation settlement calculation and engineering geological zoning.The methods used are not universally suitable for complex geological enviro...Different criteria and factors are used in different methods of soft soil foundation settlement calculation and engineering geological zoning.The methods used are not universally suitable for complex geological environments.The post-construction settlement of soft soil foundations are especially large and difficult to calculate.In addition,there are many deficiencies in the current methods used for engineering geological zoning.Focusing on the need of establishing engineering geological zoning for areas with soft soil foundations in the Tianjin Marine Economic Area,combination weighting and extension methods were introduced.An evaluation model for the settlement of soft soil foundations was established using multiple factors and large amounts of data.This evaluation model is accurate and objective for delineating engineering geological zoning.These methods eliminate deficiencies by considering both objective and subjective factors,and help obtain an objective and accurate result.展开更多
The accumulative shear deformation of soft clays under cyclic loads is considered as pseudo-static creep. A pseudo-static elasto-plastic cyclic creep model is developed based on the visco-elasto-plastic theory. The pa...The accumulative shear deformation of soft clays under cyclic loads is considered as pseudo-static creep. A pseudo-static elasto-plastic cyclic creep model is developed based on the visco-elasto-plastic theory. The parameters in the model are determined by cyclic triaxial soil tests. A method for analyzing the stability of offshore soft foundation under wave loads is given by combining the model with pseudo-static creep analysis. An example is analyzed by the method. The results show that the horizontal and vertical stability of foundations under wave loads can be analyzed by it and the analytical results are qualitatively consistent with the observed failure modes of shallow foundations.展开更多
In view of the characteristics of soft soil deep foundation pit for the construction and geotechnical characteristics of the special medium,it is difficult to calculate theoreti- cally accurately structural deformatio...In view of the characteristics of soft soil deep foundation pit for the construction and geotechnical characteristics of the special medium,it is difficult to calculate theoreti- cally accurately structural deformation of the foundation pit,so in the course of excavation on the construction of the information is particularly important.The analysis and compari- son of several popular non-linear forecasting methods,combined with the actual projects, set up a grey theoretical prediction model,time series forecasting model,improved neural network model to predict deformation of the foundation pit.The results show that the use of neural network to predict with high accuracy solution,it is the foundation deformation prediction effective way in underground works with good prospects.展开更多
Finite element method was performed to investigate the influences of beam stiffness, foundation width and cushion thickness on the beating capacity of beam foundation on underlying weak laminated clay. The comparison ...Finite element method was performed to investigate the influences of beam stiffness, foundation width and cushion thickness on the beating capacity of beam foundation on underlying weak laminated clay. The comparison between numerical results and results from field test including plate-bearing test and foundation settlement observation shows reasonable agreement. According to the numerical results, the beam width, length, cross section and cushion thickness were optimized. The results show that the stresses in subgrade soil decrease greatly with increasing the cushion thickness and width of foundation. However, the foundation settlement and influencing depth of displacement also increase correspondingly under conditions of relatively thinner cushion thickness. For the foundations on underlying weak layer, increasing foundation width merely might be inadequate for improving the bearing capacity, and the appropriate width and cushion thickness depend on the response of subgrade. A comparison between rigid and flexible beams was also discussed. The influence of a flexible beam foundation on subgrade is relatively smaller under the same loading conditions, and the flexible beam foundation appears more adaptable to various subgrades. The proposed flexible beam foundation was adopted in engineering. According to the calculation results, beam width of 2.4 m and cushion thickness of 0.8 m are proposed, and a flexible beam foundation is applied in the optimized design, which is confirmed reasonable by the actual engineering.展开更多
Highway is an important channel to connect regional economic development,and is an indispensable part of modern transportation system.In view of the extensive nature of highway cover space and the existence of diversi...Highway is an important channel to connect regional economic development,and is an indispensable part of modern transportation system.In view of the extensive nature of highway cover space and the existence of diversified construction environment,climate and geological influence in highway construction,soft soil foundation is one of the more typical geological forms.With wide distribution in our country,seen as a big difficulty,highway construction technology and directly affect the quality of highway construction,cost,if not properly handled,will cause the soft soil foundation highway engineering structure is not stable,prone to accidents in use.In this paper,we study the treatment of soft soil foundation in highway construction,and put forward some reasonable Suggestions.展开更多
In the treatment of soft soil, loose materials are often used for foundation treatment in airport runway projects, such as dynamic compaction replacement, gravel piles, etc. In this paper, the load characteristics of ...In the treatment of soft soil, loose materials are often used for foundation treatment in airport runway projects, such as dynamic compaction replacement, gravel piles, etc. In this paper, the load characteristics of airport pavement are analyzed, the advantages and disadvantages of bulk material treatment methods are analyzed in combination with the purpose of foundation treatment of airport pavement engineering, the application scope of bulk material treatment methods is defined in combination with relevant engineering examples, and matters needing attention in the application of bulk material in soft soil foundation treatment scheme are analyzed.展开更多
For highway engineering construction, foundation is very important, especially the project is located in soft soil foundation. Corresponding measures must be taken according to the specific situation to ensure the sta...For highway engineering construction, foundation is very important, especially the project is located in soft soil foundation. Corresponding measures must be taken according to the specific situation to ensure the stability of subgrade. However, in the construction of modern highway engineering, the soft soil foundation is generally unstable, which affects the quality of highway materials. It can be seen that in order to promote highway engineering orderly and ensure its quality and safety, highway engineering construction units must change the existing construction mode, so as to promote the vigorous development of highway engineering.展开更多
With the acceleration of urbanization, the soft foundation treatment technology of urban roads has also been developed by leaps and bounds. However, in the construction of municipal projects, the construction scheme s...With the acceleration of urbanization, the soft foundation treatment technology of urban roads has also been developed by leaps and bounds. However, in the construction of municipal projects, the construction scheme should be selected according to the actual situation to ensure the project quality and maximize the social benefits of municipal roads. We should make bold innovations in combination with reality, constantly improve and optimize the treatment methods of soft soil subgrade, continuously improve the scientific analysis ability of soft soil subgrade, enhance the safety and durability of urban roads, and meet the requirements of urban road construction.展开更多
Highway plays an important supporting role in the economic development of the whole country, because highway is the main mode of transportation. However, considering the vast territory of our country and the relativel...Highway plays an important supporting role in the economic development of the whole country, because highway is the main mode of transportation. However, considering the vast territory of our country and the relatively large geological differences in different regions, we will face various challenges in the process of highway engineering construction, and soft soil foundation belongs to a special one. The construction of soft soil foundation has always attracted much attention, because this geology is relatively special and needs to be treated with matching construction technology to support the smooth progress of highway engineering. Based on this, this paper focuses on the application of soft soil foundation treatment technology in the process of highway construction, in order to improve the construction quality level of soft soil foundation and promote the orderly progress of highway engineering.展开更多
With the rapid development of China's social economy, China has also made great progress in infrastructure construction, especially in highway construction in China, which has made great contribution to the develo...With the rapid development of China's social economy, China has also made great progress in infrastructure construction, especially in highway construction in China, which has made great contribution to the development of China's transportation and the improvement of economic development. Road and bridge construction activities are an important part of construction projects. In order to ensure the smooth progress of urban infrastructure construction activities, highway and bridge construction personnel are required to seriously carry out various quality control activities to promote the significant improvement of soft soil foundation construction technology. In the process of highway construction, various types of foundations are involved, among which the construction of soft soil foundation is a typical one. Therefore, in the process of practice, we should fully grasp the corresponding soft soil foundation construction technology and implement various technical points, so as to more effectively strengthen the construction quality of the overall project and provide the necessary conditions for its safe and stable operation. Based on this situation, this paper focuses on the analysis of the main characteristics of soft soil foundation and the application strategies of soft soil foundation construction technology in the process of highway construction. Modern means of transportation put forward higher requirements for the quality of road infrastructure. This paper discusses the details of soft soil foundation construction control technology in highway bridge construction and puts forward some feasible suggestions for improving the construction technology of soft soil foundation. It is hoped that the analysis in this paper can provide some enlightenment for the improvement of highway bridge construction quality.展开更多
In recent years, with the rapid development of Chinas social economy, highway and bridge projects have also developed vigorously and achieved good results. The number of highway engineering projects is increasing day ...In recent years, with the rapid development of Chinas social economy, highway and bridge projects have also developed vigorously and achieved good results. The number of highway engineering projects is increasing day by day, and the project scale is constantly expanding, which has stimulated the economic development of urban and rural areas and created a convenient traffic environment for people. At the same time, however, the society has higher and higher requirements for the quality of highway bridge engineering, and the construction of highway bridge engineering is difficult. Especially when soft soil foundation is encountered, it is necessary to deal with it effectively, and then carry out follow-up construction, so as to ensure the construction quality of highway bridge. Therefore, in the process of highway and bridge construction, we should constantly innovate the soft soil foundation treatment technology, strictly follow the relevant requirements, improve the properties of soft soil foundation, and enhance the stability of soft soil foundation, so as to improve the construction benefit of highway and bridge joint projects.展开更多
Soft soil foundation is essentially a soft soil layer with low strength but high compression, and the soft soil contains a large number of small particles such as clay and silt. In view of the actual situation that th...Soft soil foundation is essentially a soft soil layer with low strength but high compression, and the soft soil contains a large number of small particles such as clay and silt. In view of the actual situation that the strength of soft soil foundation is poor, the settlement is too large and it is difficult to reach a stable state for a long time, it has become a difficulty in the construction of highway bridge engineering. If it can not be effectively handled, it will not only reduce the construction quality of the project, but also cause safety accidents. Therefore, in order to effectively apply the soft soil foundation in the construction of road and bridge projects, the construction party should refer to the characteristics of the project site and road and bridge projects, select corresponding technical methods to treat the soft soil foundation, improve the performance of the soft soil foundation, and ensure the safe and orderly promotion of road and bridge construction activities.展开更多
With the development of the construction industry, the construction standard requirements for construction projects are also raised, and the construction quality requirements for projects are also gradually improved. ...With the development of the construction industry, the construction standard requirements for construction projects are also raised, and the construction quality requirements for projects are also gradually improved. As a necessary material resource in people's daily production and life, the quality of housing construction is closely related to people's life and property safety. In the concrete building construction process, the foundation as one of the foundation construction links, if its own construction quality is not up to standard, it will reduce the stability of the whole building structure, and even more serious, it may also cause a safety accident of building collapse. In the face of this situation, the relevant construction units should pay great attention to the foundation construction link, especially to the treatment of the soft soil foundation, and should select appropriate treatment technology according to the specific conditions of the soft soil foundation so as to enhance the foundation construction quality.展开更多
In recent years, China's highway engineering has developed vigorously, and has achieved good results. It has been widely concerned by people. Highway engineering is not a simple project. It involves many aspects a...In recent years, China's highway engineering has developed vigorously, and has achieved good results. It has been widely concerned by people. Highway engineering is not a simple project. It involves many aspects and requires systematic management. Highway subgrade construction is an important part of highway engineering construction and must be highly valued. In the construction of highway subgrade, if the soft soil stratum is encountered, it should be treated first. Through advanced highway construction soft soil foundation treatment technology, various properties of the soft soil foundation can be improved, the construction quality of highway engineering in soft soil section can be improved, the stability of highway subgrade can be guaranteed, and the maximum benefit of highway construction can be realized.展开更多
The rapid development of China's infrastructure industry has greatly promoted the innovation and application development of construction technology, especially the soft soil foundation technology of highway bridge...The rapid development of China's infrastructure industry has greatly promoted the innovation and application development of construction technology, especially the soft soil foundation technology of highway bridges, which has developed quite well. With the increasing complexity of the construction area environment, the difficulty and problems of soft soil foundation construction in different areas are more and more. A variety of treatment technologies can be used to treat soft soil foundation. For projects affected by various factors, such as climate conditions, construction environment and road conditions, first, field investigation and analysis should be carried out. Then, combining with materials and tools, appropriate construction technologies should be applied to formulate construction schemes, so as to promote the leap-forward development of China's highway and bridge industry.展开更多
With the development and progress of society, people pay more attention to the construction of water conservancy projects, and promote the efficient development of water conservancy projects, improve people's qual...With the development and progress of society, people pay more attention to the construction of water conservancy projects, and promote the efficient development of water conservancy projects, improve people's quality of life. With the continuous increase of water conservancy construction projects, most of the projects are built on soft soil foundation, which has a negative impact on the overall quality and safety of the project. In order to effectively improve its bearing capacity, it is necessary to adopt soft soil foundation treatment technology, improve the quality of the foundation, reduce the safety risk in the construction, and promote the smooth construction of the project. Based on this, this paper briefly analyzes the harm of soft soil foundation in the construction of water conservancy projects, and then explores the application points and treatment technologies of soft soil foundation in detail, in order to promote the sustainable development of water conservancy industry.展开更多
Due to the low permeability of soft soil foundation and low bearing strength of buildings, it is difficult to meet the national standards. The housing foundation is the foundation of construction engineering construct...Due to the low permeability of soft soil foundation and low bearing strength of buildings, it is difficult to meet the national standards. The housing foundation is the foundation of construction engineering construction. With the development of construction industry, in order to ensure the stability of buildings, the construction party changes through corresponding measures in construction engineering construction. With the development of construction industry, in order to ensure the stability of buildings, In the construction of buildings, the construction party changes the soft soil foundation through corresponding measures to improve its bearing strength, so as to ensure the stability of buildings after use.展开更多
Most of the water conservancy projects have relatively large construction scale and long construction period, and there are many influencing factors in the construction process. The construction quality is easily affe...Most of the water conservancy projects have relatively large construction scale and long construction period, and there are many influencing factors in the construction process. The construction quality is easily affected by the seasonal environment. Soft soil foundation is an important part in the construction of water conservancy projects. In order to ensure the overall construction quality of water conservancy projects, attention should be paid to the treatment of soft soil foundation. According to the actual conditions of water conservancy projects, the standard requirements and technical points of construction are analyzed in detail, and then the appropriate construction method of soft soil foundation is selected. In the specific construction process, control should be strengthened for each construction node, and the construction effect of soft soil foundation in water conservancy projects should be well handled, which can promote the bearing capacity and strength of the foundation of water conservancy projects and further promote the smooth progress of water conservancy projects.展开更多
Due to its technical and economic advantages, the construction technology of cement mixing pile is widely used in the soft soil foundation treatment of urban road engineering. By adopting relevant technologies, the be...Due to its technical and economic advantages, the construction technology of cement mixing pile is widely used in the soft soil foundation treatment of urban road engineering. By adopting relevant technologies, the bearing capacity of the soft soil type foundation is greatly enhanced, cracks or collapses are avoided, and the overall construction effect is improved. At first, the design parameters of the cement mixing pile are clarified by combining with the engineering examples, and the implementation method and attention details of the cement mixing pile are studied in depth, which can provide reference for related projects.展开更多
The degradation strength of soils under cyclic loading is studied and a method for determining the cyclic degradation strength with cyclic triaxial tests is given in the paper. Furthermore, a dum my static method for ...The degradation strength of soils under cyclic loading is studied and a method for determining the cyclic degradation strength with cyclic triaxial tests is given in the paper. Furthermore, a dum my static method for estimating the undrained bearing capacity for offshore soft foundation under wave loads is developed. It can consider the effect of the difference of cyclic stress for different parts of the foundation on both the degradation strength of the foundation soil and the bearing capacity so that the estimated result can better reflect the real condition of foundation under cyclic loading. The method can be applied to plane and space problem.展开更多
基金National Natural Science Foundations of China(Nos.41172236,41402243)
文摘Different criteria and factors are used in different methods of soft soil foundation settlement calculation and engineering geological zoning.The methods used are not universally suitable for complex geological environments.The post-construction settlement of soft soil foundations are especially large and difficult to calculate.In addition,there are many deficiencies in the current methods used for engineering geological zoning.Focusing on the need of establishing engineering geological zoning for areas with soft soil foundations in the Tianjin Marine Economic Area,combination weighting and extension methods were introduced.An evaluation model for the settlement of soft soil foundations was established using multiple factors and large amounts of data.This evaluation model is accurate and objective for delineating engineering geological zoning.These methods eliminate deficiencies by considering both objective and subjective factors,and help obtain an objective and accurate result.
基金National Natral Science Foundation of China(Grant No.59679018)
文摘The accumulative shear deformation of soft clays under cyclic loads is considered as pseudo-static creep. A pseudo-static elasto-plastic cyclic creep model is developed based on the visco-elasto-plastic theory. The parameters in the model are determined by cyclic triaxial soil tests. A method for analyzing the stability of offshore soft foundation under wave loads is given by combining the model with pseudo-static creep analysis. An example is analyzed by the method. The results show that the horizontal and vertical stability of foundations under wave loads can be analyzed by it and the analytical results are qualitatively consistent with the observed failure modes of shallow foundations.
基金the Educational Department of Liaoning Province Through Scientific Research Project(20060051)National Natural Science Foundation of China(50604009)Universities Excellent Talents Support Plan to Train Foundation of Liaoning(RC-04-13)
文摘In view of the characteristics of soft soil deep foundation pit for the construction and geotechnical characteristics of the special medium,it is difficult to calculate theoreti- cally accurately structural deformation of the foundation pit,so in the course of excavation on the construction of the information is particularly important.The analysis and compari- son of several popular non-linear forecasting methods,combined with the actual projects, set up a grey theoretical prediction model,time series forecasting model,improved neural network model to predict deformation of the foundation pit.The results show that the use of neural network to predict with high accuracy solution,it is the foundation deformation prediction effective way in underground works with good prospects.
基金Projects(50778181, 51178472) supported by the National Natural Science Foundation of China Project(2007045) supported by the Transportation Department of Hunan Province,China
文摘Finite element method was performed to investigate the influences of beam stiffness, foundation width and cushion thickness on the beating capacity of beam foundation on underlying weak laminated clay. The comparison between numerical results and results from field test including plate-bearing test and foundation settlement observation shows reasonable agreement. According to the numerical results, the beam width, length, cross section and cushion thickness were optimized. The results show that the stresses in subgrade soil decrease greatly with increasing the cushion thickness and width of foundation. However, the foundation settlement and influencing depth of displacement also increase correspondingly under conditions of relatively thinner cushion thickness. For the foundations on underlying weak layer, increasing foundation width merely might be inadequate for improving the bearing capacity, and the appropriate width and cushion thickness depend on the response of subgrade. A comparison between rigid and flexible beams was also discussed. The influence of a flexible beam foundation on subgrade is relatively smaller under the same loading conditions, and the flexible beam foundation appears more adaptable to various subgrades. The proposed flexible beam foundation was adopted in engineering. According to the calculation results, beam width of 2.4 m and cushion thickness of 0.8 m are proposed, and a flexible beam foundation is applied in the optimized design, which is confirmed reasonable by the actual engineering.
文摘Highway is an important channel to connect regional economic development,and is an indispensable part of modern transportation system.In view of the extensive nature of highway cover space and the existence of diversified construction environment,climate and geological influence in highway construction,soft soil foundation is one of the more typical geological forms.With wide distribution in our country,seen as a big difficulty,highway construction technology and directly affect the quality of highway construction,cost,if not properly handled,will cause the soft soil foundation highway engineering structure is not stable,prone to accidents in use.In this paper,we study the treatment of soft soil foundation in highway construction,and put forward some reasonable Suggestions.
文摘In the treatment of soft soil, loose materials are often used for foundation treatment in airport runway projects, such as dynamic compaction replacement, gravel piles, etc. In this paper, the load characteristics of airport pavement are analyzed, the advantages and disadvantages of bulk material treatment methods are analyzed in combination with the purpose of foundation treatment of airport pavement engineering, the application scope of bulk material treatment methods is defined in combination with relevant engineering examples, and matters needing attention in the application of bulk material in soft soil foundation treatment scheme are analyzed.
文摘For highway engineering construction, foundation is very important, especially the project is located in soft soil foundation. Corresponding measures must be taken according to the specific situation to ensure the stability of subgrade. However, in the construction of modern highway engineering, the soft soil foundation is generally unstable, which affects the quality of highway materials. It can be seen that in order to promote highway engineering orderly and ensure its quality and safety, highway engineering construction units must change the existing construction mode, so as to promote the vigorous development of highway engineering.
文摘With the acceleration of urbanization, the soft foundation treatment technology of urban roads has also been developed by leaps and bounds. However, in the construction of municipal projects, the construction scheme should be selected according to the actual situation to ensure the project quality and maximize the social benefits of municipal roads. We should make bold innovations in combination with reality, constantly improve and optimize the treatment methods of soft soil subgrade, continuously improve the scientific analysis ability of soft soil subgrade, enhance the safety and durability of urban roads, and meet the requirements of urban road construction.
文摘Highway plays an important supporting role in the economic development of the whole country, because highway is the main mode of transportation. However, considering the vast territory of our country and the relatively large geological differences in different regions, we will face various challenges in the process of highway engineering construction, and soft soil foundation belongs to a special one. The construction of soft soil foundation has always attracted much attention, because this geology is relatively special and needs to be treated with matching construction technology to support the smooth progress of highway engineering. Based on this, this paper focuses on the application of soft soil foundation treatment technology in the process of highway construction, in order to improve the construction quality level of soft soil foundation and promote the orderly progress of highway engineering.
文摘With the rapid development of China's social economy, China has also made great progress in infrastructure construction, especially in highway construction in China, which has made great contribution to the development of China's transportation and the improvement of economic development. Road and bridge construction activities are an important part of construction projects. In order to ensure the smooth progress of urban infrastructure construction activities, highway and bridge construction personnel are required to seriously carry out various quality control activities to promote the significant improvement of soft soil foundation construction technology. In the process of highway construction, various types of foundations are involved, among which the construction of soft soil foundation is a typical one. Therefore, in the process of practice, we should fully grasp the corresponding soft soil foundation construction technology and implement various technical points, so as to more effectively strengthen the construction quality of the overall project and provide the necessary conditions for its safe and stable operation. Based on this situation, this paper focuses on the analysis of the main characteristics of soft soil foundation and the application strategies of soft soil foundation construction technology in the process of highway construction. Modern means of transportation put forward higher requirements for the quality of road infrastructure. This paper discusses the details of soft soil foundation construction control technology in highway bridge construction and puts forward some feasible suggestions for improving the construction technology of soft soil foundation. It is hoped that the analysis in this paper can provide some enlightenment for the improvement of highway bridge construction quality.
文摘In recent years, with the rapid development of Chinas social economy, highway and bridge projects have also developed vigorously and achieved good results. The number of highway engineering projects is increasing day by day, and the project scale is constantly expanding, which has stimulated the economic development of urban and rural areas and created a convenient traffic environment for people. At the same time, however, the society has higher and higher requirements for the quality of highway bridge engineering, and the construction of highway bridge engineering is difficult. Especially when soft soil foundation is encountered, it is necessary to deal with it effectively, and then carry out follow-up construction, so as to ensure the construction quality of highway bridge. Therefore, in the process of highway and bridge construction, we should constantly innovate the soft soil foundation treatment technology, strictly follow the relevant requirements, improve the properties of soft soil foundation, and enhance the stability of soft soil foundation, so as to improve the construction benefit of highway and bridge joint projects.
文摘Soft soil foundation is essentially a soft soil layer with low strength but high compression, and the soft soil contains a large number of small particles such as clay and silt. In view of the actual situation that the strength of soft soil foundation is poor, the settlement is too large and it is difficult to reach a stable state for a long time, it has become a difficulty in the construction of highway bridge engineering. If it can not be effectively handled, it will not only reduce the construction quality of the project, but also cause safety accidents. Therefore, in order to effectively apply the soft soil foundation in the construction of road and bridge projects, the construction party should refer to the characteristics of the project site and road and bridge projects, select corresponding technical methods to treat the soft soil foundation, improve the performance of the soft soil foundation, and ensure the safe and orderly promotion of road and bridge construction activities.
文摘With the development of the construction industry, the construction standard requirements for construction projects are also raised, and the construction quality requirements for projects are also gradually improved. As a necessary material resource in people's daily production and life, the quality of housing construction is closely related to people's life and property safety. In the concrete building construction process, the foundation as one of the foundation construction links, if its own construction quality is not up to standard, it will reduce the stability of the whole building structure, and even more serious, it may also cause a safety accident of building collapse. In the face of this situation, the relevant construction units should pay great attention to the foundation construction link, especially to the treatment of the soft soil foundation, and should select appropriate treatment technology according to the specific conditions of the soft soil foundation so as to enhance the foundation construction quality.
文摘In recent years, China's highway engineering has developed vigorously, and has achieved good results. It has been widely concerned by people. Highway engineering is not a simple project. It involves many aspects and requires systematic management. Highway subgrade construction is an important part of highway engineering construction and must be highly valued. In the construction of highway subgrade, if the soft soil stratum is encountered, it should be treated first. Through advanced highway construction soft soil foundation treatment technology, various properties of the soft soil foundation can be improved, the construction quality of highway engineering in soft soil section can be improved, the stability of highway subgrade can be guaranteed, and the maximum benefit of highway construction can be realized.
文摘The rapid development of China's infrastructure industry has greatly promoted the innovation and application development of construction technology, especially the soft soil foundation technology of highway bridges, which has developed quite well. With the increasing complexity of the construction area environment, the difficulty and problems of soft soil foundation construction in different areas are more and more. A variety of treatment technologies can be used to treat soft soil foundation. For projects affected by various factors, such as climate conditions, construction environment and road conditions, first, field investigation and analysis should be carried out. Then, combining with materials and tools, appropriate construction technologies should be applied to formulate construction schemes, so as to promote the leap-forward development of China's highway and bridge industry.
文摘With the development and progress of society, people pay more attention to the construction of water conservancy projects, and promote the efficient development of water conservancy projects, improve people's quality of life. With the continuous increase of water conservancy construction projects, most of the projects are built on soft soil foundation, which has a negative impact on the overall quality and safety of the project. In order to effectively improve its bearing capacity, it is necessary to adopt soft soil foundation treatment technology, improve the quality of the foundation, reduce the safety risk in the construction, and promote the smooth construction of the project. Based on this, this paper briefly analyzes the harm of soft soil foundation in the construction of water conservancy projects, and then explores the application points and treatment technologies of soft soil foundation in detail, in order to promote the sustainable development of water conservancy industry.
文摘Due to the low permeability of soft soil foundation and low bearing strength of buildings, it is difficult to meet the national standards. The housing foundation is the foundation of construction engineering construction. With the development of construction industry, in order to ensure the stability of buildings, the construction party changes through corresponding measures in construction engineering construction. With the development of construction industry, in order to ensure the stability of buildings, In the construction of buildings, the construction party changes the soft soil foundation through corresponding measures to improve its bearing strength, so as to ensure the stability of buildings after use.
文摘Most of the water conservancy projects have relatively large construction scale and long construction period, and there are many influencing factors in the construction process. The construction quality is easily affected by the seasonal environment. Soft soil foundation is an important part in the construction of water conservancy projects. In order to ensure the overall construction quality of water conservancy projects, attention should be paid to the treatment of soft soil foundation. According to the actual conditions of water conservancy projects, the standard requirements and technical points of construction are analyzed in detail, and then the appropriate construction method of soft soil foundation is selected. In the specific construction process, control should be strengthened for each construction node, and the construction effect of soft soil foundation in water conservancy projects should be well handled, which can promote the bearing capacity and strength of the foundation of water conservancy projects and further promote the smooth progress of water conservancy projects.
文摘Due to its technical and economic advantages, the construction technology of cement mixing pile is widely used in the soft soil foundation treatment of urban road engineering. By adopting relevant technologies, the bearing capacity of the soft soil type foundation is greatly enhanced, cracks or collapses are avoided, and the overall construction effect is improved. At first, the design parameters of the cement mixing pile are clarified by combining with the engineering examples, and the implementation method and attention details of the cement mixing pile are studied in depth, which can provide reference for related projects.
基金This project was financially supported by the National Natural Science Foundation of China(No.59679018)
文摘The degradation strength of soils under cyclic loading is studied and a method for determining the cyclic degradation strength with cyclic triaxial tests is given in the paper. Furthermore, a dum my static method for estimating the undrained bearing capacity for offshore soft foundation under wave loads is developed. It can consider the effect of the difference of cyclic stress for different parts of the foundation on both the degradation strength of the foundation soil and the bearing capacity so that the estimated result can better reflect the real condition of foundation under cyclic loading. The method can be applied to plane and space problem.
