On the basis of the perfect design of deep foundation pit engineering, the author adopts the methods of geological environment inspection, hydrogeological environment inspection, construction of test section, suppleme...On the basis of the perfect design of deep foundation pit engineering, the author adopts the methods of geological environment inspection, hydrogeological environment inspection, construction of test section, supplementary investigation, etc. While ensuring the stability of the foundation and the safety of the environment, the method of combining design and construction is adopted to dynamically adjust the design scheme during the construction process, and through the gradual exploration can guarantee the safety and can control the cost of the optimization method, in order to enhance the economic benefits of the construction project.展开更多
As an important component of the engineering optimization design system, the optimization design of deep foundation pit supporting has a vital influence on the construction quality and construction effect of engineeri...As an important component of the engineering optimization design system, the optimization design of deep foundation pit supporting has a vital influence on the construction quality and construction effect of engineering projects to a large extent. This paper studies and analyzes the optimization design of supporting structure of metro deep foundation pit for reference.展开更多
As an important part of geotechnical engineering, the design and construction quality of deep foundation pit support directly affect the smooth development of geotechnical engineering. In the actual construction of de...As an important part of geotechnical engineering, the design and construction quality of deep foundation pit support directly affect the smooth development of geotechnical engineering. In the actual construction of deep foundation pit support, various problems are often encountered, resulting in quality problems of deep foundation pit support. It is a powerful means to promote the development of geotechnical engineering to analyze the common problems in the design and construction of deep foundation pit support and find scientific and reasonable solutions. Based on this, this paper will study the design and construction of deep foundation pit support in geotechnical engineering.展开更多
Based on analyses of the theories of groundwater unsteady flow in deep well dewatering in the deep foundation pit, Theis equations are chosen to calculate and analyze the relationship between water level drawdown of c...Based on analyses of the theories of groundwater unsteady flow in deep well dewatering in the deep foundation pit, Theis equations are chosen to calculate and analyze the relationship between water level drawdown of confined aquifer and dewatering duration. In order to reduce engineering cost and diminish detrimental effect on ambient surrounding, optimization design target function based on the control of confined water drawdown and four restriction requisitions based on the control of safe water level, resistance to throwing up from the bottom of foundation pit, avoiding excessively great subsidence and unequal surface subsidence are proposed. A deep well dewatering project in the deep foundation pit is optimally designed. The calculated results including confined water level drawdown and surface subsidence are in close agreement with the measured results, and the optimization design can effectively control both surface subsidence outside foundation pit and unequal subsidence as a result of dewatering.展开更多
In Chinese modernization and social development level enhances unceasingly, and under the background of deepening the process of urbanization, urban development level in China has been an unprecedented increase, espec...In Chinese modernization and social development level enhances unceasingly, and under the background of deepening the process of urbanization, urban development level in China has been an unprecedented increase, especially with the constant development of information technology, make our country construction technology has been constantly strengthened, all kinds of tunnel construction, underground construction, high-rise buildings appear constantly, higher and more strict requirements are put forward for deep foundation pit engineering in terms of quantity and construction quality. In this paper, a detailed analysis is carried out on the simulation and optimization of the double-row pile supporting structure of deep foundation pit, which lays a solid foundation for the further improvement of the modern construction technology level in China.展开更多
Based on the design principles of economic rationality and safety,multiple-pivot pile anchorage approach was used as the supporting engineering of a tall building with a deep foundation ditch.The designs,such as ancho...Based on the design principles of economic rationality and safety,multiple-pivot pile anchorage approach was used as the supporting engineering of a tall building with a deep foundation ditch.The designs,such as anchor arm,single pile and the whole,were set up in accordance with the calculations of the internal force from the equivalent beam and Yamagata Kunio methods.Moreover,the rationality of the design was estimated using the stability checks.FLAC3D was used for calculating the accuracy of the design.Using FLAC3D to simulating ditch cutting and supporting processes can obtain the equivalent results as the theory analysis in the displacement of ditch surrounding wall,the stress field and stress distribution.展开更多
At present, with the expansion and scale of China's civil engineering infrastructure projects, the content and types of deep foundation pit supporting construction technology are becoming more and more rich, occup...At present, with the expansion and scale of China's civil engineering infrastructure projects, the content and types of deep foundation pit supporting construction technology are becoming more and more rich, occupying an increasingly large position in civil engineering construction. From the technical point of view, the safety, stability and sustainability of civil foundation are determined by the construction technology of deep foundation pit. In particular, the type of technology and the principle of selection of maintenance system should be analyzed.展开更多
The modified genetic algorithm was used for the optimal design of supporting structure in deep pits.Based on the common genetic algorithm, using niche technique and reserving the optimum individual the modified geneti...The modified genetic algorithm was used for the optimal design of supporting structure in deep pits.Based on the common genetic algorithm, using niche technique and reserving the optimum individual the modified genetic algorithm was presented. By means of the practical engineering, the modified genetic algorithm not only has more expedient convergence, but also can enhance security and operation efficiency.展开更多
文摘On the basis of the perfect design of deep foundation pit engineering, the author adopts the methods of geological environment inspection, hydrogeological environment inspection, construction of test section, supplementary investigation, etc. While ensuring the stability of the foundation and the safety of the environment, the method of combining design and construction is adopted to dynamically adjust the design scheme during the construction process, and through the gradual exploration can guarantee the safety and can control the cost of the optimization method, in order to enhance the economic benefits of the construction project.
文摘As an important component of the engineering optimization design system, the optimization design of deep foundation pit supporting has a vital influence on the construction quality and construction effect of engineering projects to a large extent. This paper studies and analyzes the optimization design of supporting structure of metro deep foundation pit for reference.
文摘As an important part of geotechnical engineering, the design and construction quality of deep foundation pit support directly affect the smooth development of geotechnical engineering. In the actual construction of deep foundation pit support, various problems are often encountered, resulting in quality problems of deep foundation pit support. It is a powerful means to promote the development of geotechnical engineering to analyze the common problems in the design and construction of deep foundation pit support and find scientific and reasonable solutions. Based on this, this paper will study the design and construction of deep foundation pit support in geotechnical engineering.
基金This paper is supported by the Hubei Construct Science Foundation of China (G200013).
文摘Based on analyses of the theories of groundwater unsteady flow in deep well dewatering in the deep foundation pit, Theis equations are chosen to calculate and analyze the relationship between water level drawdown of confined aquifer and dewatering duration. In order to reduce engineering cost and diminish detrimental effect on ambient surrounding, optimization design target function based on the control of confined water drawdown and four restriction requisitions based on the control of safe water level, resistance to throwing up from the bottom of foundation pit, avoiding excessively great subsidence and unequal surface subsidence are proposed. A deep well dewatering project in the deep foundation pit is optimally designed. The calculated results including confined water level drawdown and surface subsidence are in close agreement with the measured results, and the optimization design can effectively control both surface subsidence outside foundation pit and unequal subsidence as a result of dewatering.
文摘In Chinese modernization and social development level enhances unceasingly, and under the background of deepening the process of urbanization, urban development level in China has been an unprecedented increase, especially with the constant development of information technology, make our country construction technology has been constantly strengthened, all kinds of tunnel construction, underground construction, high-rise buildings appear constantly, higher and more strict requirements are put forward for deep foundation pit engineering in terms of quantity and construction quality. In this paper, a detailed analysis is carried out on the simulation and optimization of the double-row pile supporting structure of deep foundation pit, which lays a solid foundation for the further improvement of the modern construction technology level in China.
基金Supported by Project of the National High Technology Research and Development Program of China(No.2003AA602250)
文摘Based on the design principles of economic rationality and safety,multiple-pivot pile anchorage approach was used as the supporting engineering of a tall building with a deep foundation ditch.The designs,such as anchor arm,single pile and the whole,were set up in accordance with the calculations of the internal force from the equivalent beam and Yamagata Kunio methods.Moreover,the rationality of the design was estimated using the stability checks.FLAC3D was used for calculating the accuracy of the design.Using FLAC3D to simulating ditch cutting and supporting processes can obtain the equivalent results as the theory analysis in the displacement of ditch surrounding wall,the stress field and stress distribution.
文摘At present, with the expansion and scale of China's civil engineering infrastructure projects, the content and types of deep foundation pit supporting construction technology are becoming more and more rich, occupying an increasingly large position in civil engineering construction. From the technical point of view, the safety, stability and sustainability of civil foundation are determined by the construction technology of deep foundation pit. In particular, the type of technology and the principle of selection of maintenance system should be analyzed.
文摘The modified genetic algorithm was used for the optimal design of supporting structure in deep pits.Based on the common genetic algorithm, using niche technique and reserving the optimum individual the modified genetic algorithm was presented. By means of the practical engineering, the modified genetic algorithm not only has more expedient convergence, but also can enhance security and operation efficiency.
