第1个回答 2009-06-14
渗流对地铁基坑维护结构内力的影响
摘要:随着我国大规模建筑基坑和地下工程的发展,许多由地下水的渗流作用导致的问题逐步凸现出来。本文结合实际工程介绍了应用PLAXIS有限元程序模拟降水条件下的深基坑开挖过程,计算在基坑开挖过程中基坑维护结构的内力,在计算中通过潜水位生成水压、渗流计算生成水压两种工况计算。计算结果表明:按照潜水位生成水压、渗流计算生成水压两种工况下,基坑维护结构内力及基坑的变形性状差别较大,应用具有渗流计算功能的PLAXIS程序计算得到的维护结构内力及变形更为准确合理。通过计算结果的对比,初步揭示了基坑维护结构的内力及变形的特点。
Seepage pit on the subway the impact of the maintenance of the structure of the internal force
Abstract: As China's large-scale excavation and underground construction development projects, many from the role of groundwater seepage problem caused by gradually emerged. This paper describes the application of practical engineering finite element program PLAXIS precipitation under the conditions of simulated deep excavation process in the foundation excavation to maintain the structure of the course of the internal forces in the calculation of diving spaces generated by water pressure, seepage calculation two conditions to generate hydraulic calculation. The results show that: In accordance with the digital generation of diving water pressure, seepage pressure calculated to generate the two conditions, the maintenance of the structure of the internal force and the foundation pit of the deformation behavior of the larger differences, the application of computing power has PLAXIS flow process has been the maintenance of the structure calculation internal force and deformation is more accurate and reasonable. By calculating the results of the comparison, preliminary excavation has revealed the maintenance of the structure of the internal force and deformation characteristics.
第2个回答 2009-06-14
Seepage pit on the subway the impact of the maintenance of the structure of the internal force
Abstract: As China's large-scale excavation and underground construction development projects, many from the role of groundwater seepage problem caused by gradually emerged. This paper describes the application of practical engineering finite element program PLAXIS precipitation under the conditions of simulated deep excavation process in the foundation excavation to maintain the structure of the course of the internal forces in the calculation of diving spaces generated by water pressure, seepage calculation two conditions to generate hydraulic calculation. The results show that: In accordance with the digital generation of diving water pressure, seepage pressure calculated to generate the two conditions, the maintenance of the structure of the internal force and the foundation pit of the deformation behavior of the larger differences, the application of computing power has PLAXIS flow process has been the maintenance of the structure calculation internal force and deformation is more accurate and reasonable. By calculating the results of the comparison, preliminary excavation has revealed the maintenance of the structure of the internal force and deformation characteristics.
第3个回答 2009-06-14
Seepage of subway excavation influence of structural intemal maintenance
Abstract: with China's massive building excavation and underground project development, many of the groundwater seepage effects caused by the problem. Based on the practical engineering application are introduced PLAXIS simulated rainfall condition of finite element program of deep excavation, the calculating process of foundation pit excavation in the process of maintaining the internal structure of diving through calculation, in a generation, seepage calculation generation hydraulic pressure two conditions. The calculation results show that the pressure generated according to dive bits, seepage calculation formation pressure two conditions, the foundation pit excavation of the internal structure of maintenance and deformation properties, application of the function of seepage calculation PLAXIS procedures for the calculation of the internal force and deformation of the structure of maintaining more accurately. Through the comparison of the calculation results, the preliminary reveals the internal structure of foundation pit maintenance and deformation characteristics.本回答被提问者采纳