共用连续墙结构的现场测试与安全性评价  

Field measurement and safety evaluation of shared diaphragm wall structure

作　　者：陈江[1] 阳军生[1] 张学民[1] 欧雪峰[1] 刘学勤 

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]中铁建设投资集团有限公司

出　　处：《中国安全科学学报》2016年第7期108-112,共5页China Safety Science Journal

基　　金：国家自然科学基金资助(51378505;50808178);中国中铁股份有限公司科技开发计划项目(2012-19)

摘　　要：为分析相邻基坑开挖过程中共用连续墙的受力变化规律,以深圳地铁车公庙枢纽共用地下连续墙为研究对象,选择一个典型断面进行监测。通过在共用连续墙D内埋置混凝土应变计,得到现场测试2基坑施工全过程的受力情况,并以此评价共用连续墙D的安全性。结果表明:共用地下连续墙D处于安全状态;随着基坑的开挖深度增加,大多数测点的应变值呈增长趋势,轴力和弯矩变化越来越大;共用连续墙D受紧邻基坑开挖影响明显,内力变化较大。In order to analyze variation in internal force of shared diaphragm walls during excavation of an adjacent foundation pit, a shared diaphragm wall D in the foundation pit of Chegongmiao station of Shenzhen subway was taken as an object of study, and a typical section was monitored with concrete strain meters embedded in the wall. In the end, the diaphragm wall safety was evaluated. The results show that it is in a safe state, that with increase in the excavation depth, the strains of most gauging points tend to increase, and both axial force and bending moment change more and more significantly, and that the shared diaphragm wall D is affected by adjacent excavations obviously, and the internal force varies remarkably.

关 键 词：深基坑 共用地下连续墙 现场测试 弯矩 安全系数 

分 类 号：X948[环境科学与工程—安全科学]