摘要
Abstract
In order to study the mechanical characteristics of the foundation pit supporting structure connected to the adjacent underground structure,this paper uses ABAQUS finite element software to establish a three-dimensional solid model,and analyzes the stress and deforma-tion characteristics of the foundation pit supporting structure connected to the adjacent underground structure during construction.The results show that when the foundation pit support system is connected to the basement,the mechanical characteristics of the support structure will be significantly affected.With the increase of the depth of foundation pit excavation,the maximum displacement of the top of the supporting pile gradually increases,and its maximum displacement values are 3.59,5.87,7.81,8.61 and 9.19 mm,which all appear at the top of the pile body.The existence of basement on the side of foundation pit will affect the force of soil under it.The influence of basement on the soil stress under it ranges from 0 to 1.5m(from the lower part of the basement,about 0.15 times the basement height).Therefore,according to the depth of the foundation pit and the characteristics of the adjacent structure,selecting the appropriate support mode can effectively reduce the impact on the adjacent structure and ensure the smooth progress of the project.关键词
基坑支护/ABAQUS/地下结构/应力应变特性Key words
Foundation pit support/ABAQUS/Underground structure/Stress-strain characteristic分类
建筑与水利
