分坑施工在控制基坑长边效应中的应用
摘要:分坑施工通过把一个大的基坑划分为若干个小的基坑，利用时空效应，先后施工，能有效地控制基坑长边的变形，确保基坑周边管线及建筑物的安全。通过一分坑施工的基坑实例，采用Plaxis3D三维有限元软件进行数值模拟，分析了基坑分坑施工和不分坑施工对基坑周边环境的影响，并通过分坑施工有限元数值分析结果和实际基坑监测数据进行了对比。结果表明，分坑施工能有效减小基坑长边的变形。
Abstract:Construction technology of separate pit divides a large foundation pit into several small foundation pits. Using the method of "time——space effect", successively construction often can effectively control the deformation of the long side of pit and ensure the safety of pipelines and buildings around. Based on a typical case of excavation, the paper analyzed influence of the surrounding environment in the case of zoned excavation and overall construction by Plaxis3D dimensional finite element numerical simulation. Then the simulated results were compared with the measured monitoring data. It is shown that construction technology of separate pit can effectively reduce the deformation of the long side of pit.
中文标题：
分坑施工在控制基坑长边效应中的应用
Construction Technology of Separate Pit Applied to Control Long Side Effect of Foundation Pit
作者：
宋德鑫,陶铸,范钦建
Song Dexin,Tao Zhu,Fan Qinjian
作者简介:宋德鑫,1986年生,男,汉族,陕西安康人,大学本科,主要从事岩土丁.程设计丁作。E-mail:songdexin3131@126.com
通讯地址：
中亿丰建设集团设计研究院有限公司, 江苏苏州 215008
ZYFConstructionGroupDesign&ResearchInstituteCo.,Ltd,Suzhou215008,Jiangsu,China
中图分类号:TU473.2
doi:10.3969/j.issn.1007-2993.2015.02.008
出版物：岩土工程技术
收稿日期:2014-08-18
网络出版日期:2021-07-19
关键词:长边效应,超大基坑,三维有限元,分坑施工
Key words:long side effect,super large foundation pit,3D FEM,zoned excavation
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