基坑开挖支护力学性能分析  

Analysis of Mechanical Properties of Foundation Excavation Support

作　　者：丁邺 沙丽荣[1] DING Ye;SHA Lirong(School of Civil Engineering,Jilin Jianzhu University,Changchun Jilin 130118,China)

机构地区：[1]吉林建筑大学土木工程学院,吉林长春130118

出　　处：《北方建筑》2024年第2期17-21,共5页Northern Architecture

基　　金：吉林省科技厅重点研发项目(20220203072SF);吉林省自然科学基金(YDZJ202201ZYTS407)。

摘　　要：深基坑开挖过程中,支护结构的变形会对基坑整体稳定性产生不利的影响。本文以某基坑支护为例,利用ABAQUS有限元软件对基坑和开挖下的支护结构进行力学分析,研究不同支护结构的变形特点及规律,从而进一步得到基坑整体的变形,以获得支护结构对基坑整体变形的影响。同时,在结构整体安全得到满足的情况下,通过分析得到应力应变图,找到结构产生最大应力、变形的位置。根据ABAQUS有限元软件得到的分析计算结果,为实际情况下基坑开挖施工提供了理论依据和方法。In the process of deep foundation pit excavation,the deformation of the support structure can adversely affect the overall stability of the pit.This paper takes a certain foundation pit support as an example,utilizing the ABAQUS finite element software to carry out a mechanical analysis of the foundation pit and the support structure under excavation,the study focuses on the deformation characteristics and patterns of different support structures,thereby further obtaining the overall deformation of the pit to determine the impact of the support structure on the overall deformation of the foundation pit.At the same time,while ensuring the overall safety of the structure,the stress-strain diagrams obtained from the analysis are used to locate the positions where the structure experiences maximum stress and deformation.Based on the analysis and calculation results obtained from the ABAQUS finite element software,theoretical foundations and methods are provided for the actual construction of foundation pit excavation.

关 键 词：基坑 支护 有限元方法 力学分析 

分 类 号：TU473.2[建筑科学—结构工程]