深基坑深层水平位移量测段的选择探讨  

Discussion on the Selection of Deep Horizontal Displacement Measurement Section of Deep Foundation Pit

作　　者：丁鸿志 厉风 陈钊锋 周峰 庞学研 DING Hongzhi;LI Feng;CHEN Zhaofeng;ZHOU Feng;PANG Xueyan(Nanjing Public Project Construction Center,Nanjing 210019,China;JSTI Group Co.,Ltd.,Nanjing 210019,China;JSTI Group Inspection and Certification Co.,Ltd.,Nanjing 211112,China)

机构地区：[1]南京市公共工程建设中心,南京210019 [2]苏交科集团股份有限公司,南京210019 [3]苏交科集团检测认证有限公司,南京211112

出　　处：《现代交通技术》2024年第5期89-92,共4页Modern Transportation Technology

基　　金：江苏省住建厅科技项目(2019ZD117)。

摘　　要：深层水平位移是深基坑变形最重要的监测项目之一,可用于评判基坑的安全性与稳定性。受基坑开挖深度及数据精度要求的影响,当前测斜仪的数据采集存在耗时长、效率低、成本投入大等问题。在监测实施中将量测段由0.5 m改为1.0 m,可以提高数据采集效率,但也存在一些不足。通过理论联系实际的方法,结合工程实测数据,深入研究了测斜仪采用0.5 m和1.0 m量测段施测时数据间的差异,并给出了采用1.0 m量测段进行测量的前提条件。Deep horizontal displacement is one of the most important monitoring indicators of deep foundation pit deformation,which can be used to evaluate the safety and stability of foundation pit.Affected by the requirement of excavation depth and data precision,the current inclinometer has many problems in the process of data acquisition,such as long time-consuming,low efficiency,large cost investment etc.In the implementation of monitoring,changing the measurement section from 0.5 m to 1.0 m can improve the efficiency of data collection,but there are also many disputes.Through the method of integrating theory with practice,combined with the actual measurement data of the project,this paper deeply studies the difference between the measurement data of the inclinometer using 0.5 m and 1.0 m measurement sections respectively,and gives the prerequisite for using 1.O m measurement section for monitoring.

关 键 词：深基坑 深层水平位移 量测段 监测精度 测斜仪 

分 类 号：TU433[建筑科学—岩土工程] U231.3[建筑科学—土工工程]