不同工况下软土层深基坑变形规律研究  

Study on the Deformation Law of the Deep Foundation Pit of Soft Soil Layer Under Different Working Conditions

作　　者：陈忠[1] Chen Zhong(Guizhou Industry Polytechnic College,Guiyang,Guizhou 550000)

机构地区：[1]贵州工业职业技术学院,贵州贵阳550000

出　　处：《江西建材》2024年第7期172-174,共3页

摘　　要：文中以某地下工程为例,采用数值模拟方法,对不同开挖工况下基坑周边地表沉降以及支护结构自身的变形特性进行分析。结果表明,实测值与模拟值的变化规律保持一致,且数值误差在10%以内,即所建模型准确可靠;随着基坑开挖深度的增加,周边地表沉降量逐渐增加,且地表沉降量与距基坑距离曲线的变化斜率也逐渐增加;支护结构水平位移随着支护桩埋深的增加呈现出先增加后降低的变化规律;随着开挖深度的增加,支护桩的水平位移不断增加,且最大水平位移的位置开始下移。Based on the construction practice of an underground project,the paper uses numerical simulation method to analyze the surface settlement around the foundation pit and the deformation characteristics of the supporting structure under different excavation conditions.The results show that the measured values are consistent with the simulated values,and the numerical error is less than 10%,that is,the established model is accurate and reliable.With the increase of excavation depth,the surrounding surface settlement increases gradually,and the slope of the curve between the surface settlement and the distance from the foundation pit also increases gradually.The horizontal displacement of the supporting structure increases first and then decreases with the increase of the depth of the supporting pile.With the increase of excavation depth,the horizontal displacement of supporting piles increases continuously,and the position of maximum horizontal displacement begins to movedownward.

关 键 词：软土地区 深基坑 数值模拟 实时监测 变形特性 

分 类 号：TU195[建筑科学—建筑理论]