考虑渗流效应的地铁深基坑变形特性研究  

作　　者：李斌 王文正 王健川 马克生[3] 巨玉文[3] 

机构地区：[1]中国电建市政建设集团有限公司,天津300350 [2]北京市政建设集团有限责任公司,北京100176 [3]太原理工大学土木工程学院,太原030024

出　　处：《科技创新与应用》2025年第8期68-72,共5页Technology Innovation and Application

摘　　要：针对太原典型地质环境,运用PLAXIS3D建立考虑渗流效应与不考虑渗流效应的数值模型,将这两者的模拟结果与实际监测数据进行对比,验证考虑渗流效应模型的可靠性,并在此基础上展开地铁深基坑的变形特性研究。研究结果表明,考虑渗流效应的围护桩水平位移比不考虑渗流效应的要大,并且与实际监测数据更接近;增大围护桩直径能有效减小围护桩的最大水平位移;增大钢支撑壁厚,能较有效减小围护桩最大水平位移。Aiming at the typical geological environment of Taiyuan,PLAXIS3D was used to establish numerical models that consider seepage effects and those that do not consider seepage effects.The simulation results of the two were compared with actual monitoring data to verify the reliability of the model that considers seepage effects.On this basis,the deformation characteristics of subway deep foundation pits were studied.The research results show that the horizontal displacement of the retaining pile considering the seepage effect is greater than that of the retaining pile without considering the seepage effect,and is closer to the actual monitoring data;increasing the diameter of the retaining pile can effectively reduce the maximum horizontal displacement of the retaining pile;increasing the thickness of the steel support wall can effectively reduce the maximum horizontal displacement of the retaining pile.

关 键 词：渗流效应 深基坑 变形特性 围护桩 水平位移 

分 类 号：TU463[建筑科学—结构工程]