盖挖逆筑地下工程支护结构的施工阶段分析  

Analysis of construction stages of support structure for underground engineering with cover-cut top-down method

作　　者：黄国发 林蓼[2] 刘汉凯[2] Huang Guofa;Lin lu;Liu Hankai(Shanghai Municipal Transportation Design Institute Co.,Ltd.,Shanghai 200030;China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 43000)

机构地区：[1]上海市政交通设计研究院有限公司,上海200030 [2]中铁第四勘察设计院集团有限公司,武汉430000

出　　处：《工程建设》2019年第10期51-55,共5页Engineering Construction

摘　　要：以郑州某三层地下空间基坑支护结构设计为背景,对复合式外墙地下工程的盖挖逆筑施工过程采用三维空间模型的阶段施工模拟手段,分析了支护结构以及主体结构在施工过程中的受力变形。相比于理正深基坑等传统断面分析设计时不能考虑围护墙厚、约束条件随施工过程变化的不足,阶段分析法计算结果更接近实测变形,可为后续类似地下工程的设计提供一定参考。With the design of foundation pit support structure of three-storied underground space in Zhengzhou as the background,the stage construction modeling with 3 d space model is adopted for the cover-cut top-down construction process of underground composite external wall engineering,and the stress and deformation of the support structure and the major structure in the construction process are analyzed.This stage construction modeling is reliable,and as an advantage,can make up for the deficiency of traditional section analysis and design approach which is incapable of considering retaining wall thickness or constraint conditions changing with the construction process,and the calculation result of the stage analysis method is more approximate to the measured deformation,which can provide a reference for design of downstream similar underground engineering.

关 键 词：地下空间 阶段施工 SAP2000 三维结构分析 盖挖逆筑 

分 类 号：TU94[建筑科学—建筑技术科学]