粉砂粉土地质条件下盖挖逆作施工中临时混凝土支撑对道路的影响  

Effect of Temporary Concrete Support on Road in Cover and Excavation Top-Down Construction Method Under Silt Geological Conditions

作　　者：桑义 SANG Yi(Shanghai Metro Consulting Supervision Technology Co.,Ltd.,Shanghai 200030,China)

机构地区：[1]上海地铁咨询监理科技有限公司,上海200030

出　　处：《建筑施工》2018年第7期1114-1116,共3页Building Construction

摘　　要：基于ABAQUS有限元软件,对武汉市轨道交通5号、7号线换乘节点基坑的盖挖逆作法施工进行数值计算模拟,研究了临时混凝土支撑对城市道路结构的影响。从路面的沉降以及弯拉应力两个大方向出发,通过计算数据的对比分析,得出设置临时混凝土支撑对实际工程的意义和价值。Based on the ABAQUS finite element software,the numerical simulation has been carried out on the cover and excavation top-down method of foundation pit in the transfer node of Wuhan rail transit line 5 and line 7,the effect of temporary concrete support on the structure of urban road structure has been studied.Starting from the two major fields of pavement settlement and flexural-tensile stress,and through the comparative analysis of calculated data,the significance and value of setting temporary concrete support for practical engineering are obtained accordingly.

关 键 词：深基坑施工 盖挖逆作 临时混凝土支撑 路面沉降 路面弯拉应力 

分 类 号：TU753[建筑科学—建筑技术科学]