基坑开挖对邻近既有建筑物的影响研究

Study on the Influence of Foundation Pit Excavation on Surrounding Existing Building

摘要: 论文以某深基坑项目为依托，采用Plaxis建立有限元模型，研究基坑动态开挖对临近建筑物的影响。研究表明，当建筑物紧贴基坑围护桩时，建筑物近基坑一侧受围护桩约束，沉降值较小，造成建筑物背向基坑一侧倾斜；当基坑采用坑内降水时，由降水引起的土体固结沉降范围较大，而基坑降水对邻近既有建筑物的倾斜度影响较小。

Abstract: Based on the project of foundation pit, the finite element model is established to investigate the influence of foundation pit excavation on surrounding buildings. The results indicate that when the building is very close to the supporting columns of foundation pit, the side closed to foundation pit is limited by the supporting columns, and the settlement is smaller than the other side, which leads to the inclination of existing building along with departing from the foundation pit; when the drainage is operated in the inside of foundation pit, the settlement range which is induced from draining is larger, but the degree of inclination is smaller.