基于某复杂地层深基坑降水开挖数值模拟分析  

Numerical Simulation Analysis Based on Dewatering Excavation of Deep Foundation Pit in a Complex Stratum

作　　者：吴银柱[1] 赵昊祥 Wu Yinzhu;Zhao Haoxiang(Changchun Institute of Technology,Changchun,China)

机构地区：[1]长春工程学院,吉林长春

出　　处：《科学技术创新》2025年第4期135-138,共4页Scientific and Technological Innovation

摘　　要：本文以长春某深基坑项目为例,利用Midas GTS NX软件对施工过程进行模拟。研究降水开挖对地表沉降、坑底隆起、围护结构的变形影响以及分析不同桩径、降水对基坑开挖的影响。结果表明,围护结构最大变形与最大地表沉降随开挖深度不断增大,最大变形位置与开挖深度之比分别为0.72和0.63;富水砂层地区基坑降水开挖后地表沉降、围护结构变形降水关系占比较大;适当改变桩径可以减小围护结构的水平变形,此次建模也验证模型的准确性。Taking a deep foundation pit project in Changchun as an example,Midas GTS NX software is used to simulate the construction process.The influence of precipitation excavation on surface settlement,uplift of pit bottom and deformation of envelope structure is studied.The influence of different pile diameters and precipitation on the excavation of foundation pit is analyzed.The results show that the maximum deformation and the maximum surface settlement of the envelope structure increase with the excavation depth,and the ratio of the maximum deformation position to the excavation depth is 0.72 and 0.63,respectively.In the water-rich sand layer area,the relationship between surface settlement and envelope deformation and precipitation is relatively large after foundation pit dewatering.Appropriate change of pile diameter can reduce the horizontal deformation of the envelope structure,and this modeling also verifies the accuracy of the model.

关 键 词：深基坑 降水开挖 数值模拟 变形控制 

分 类 号：TU753[建筑科学—建筑技术科学]