摘要
Abstract
In order to improve the safety of deep foundation pit excavation,this paper relies on a high building deep foundation pit project to systematically study the deformation of foundation pit through numerical simulation method,and compares and analyzes with the monitoring re-sults to verify the accuracy of the simulation results.The research results show that with the increase of excavation depth,the surface settle-ment,pile lateral displacement and internal support axial force all show an increasing trend.The supporting structure of bored pile+concrete support+steel support adopted in this case can meet the engineering requirements.In addition,the influence of pile embedding depth,pile di-ameter and pile spacing on the supporting effect is fully considered in the optimization of deep foundation pit supporting structure,and the key factors affecting the supporting effect are determined through orthogonal test.The optimal supporting scheme with pile diameter of 1.0 m,pile embedding depth of 6.7 m and pile spacing of 1.6 m is obtained.关键词
高层建筑/深基坑/支护设计优化Key words
High-rise building/Deep foundation pit/Support design optimization分类
土木建筑
