地下连续墙侧向变形影响因素分析 Analysis of Influencing Factors of Lateral Deformation of Underground Continuous Wall

利用ABAQUS有限元软件分析土体性质、周边土体超载两个因素对地下连续墙侧向变形的影响。在分析中我们采用单因素敏感分析法，即其他因素不变的情况下只改变单一因素进行分析。分析结果显示：1) 土体性质的改变对地下连续墙侧向变形影响较大，基底以上土体性质的变化不会造成墙体侧向变形形式的改变，它主要是改变墙体侧向位移的大小。2) 基坑周边超载对地连墙侧向变形影响很大，特别是对于墙顶无支撑的地下连续墙，超载的存在使得墙体侧向位移增加的同时，也改变了墙体的侧向变形形式。 ABAQUS finite element software is used to analyze the effects of soil properties and surrounding soil overload on the lateral deformation of underground continuous wall. In the analysis we used single factor sensitive analysis, that is, other factors remain unchanged and only a single factor is changed for analysis. The results show that: 1) The change of the soil properties has a great influence on the lateral deformation of the underground continuous wall. The change of the soil properties above the substrate does not cause the lateral deformation of the wall to change; it mainly changes the size of the lateral displacement of the wall. 2) The surrounding load of the foundation pit has a great influence on the lateral deformation of the wall, especially for the underground continuous wall without supporting in the wall crown. The existence of overload makes the lateral displacement of the wall increase, and also changes the form of the lateral deformation of the wall.