开挖方式对基坑围护结构变形的影响分析  

Influence Analysis of Excavation Methods on Deformation of Foundation Excavation Support Structure

作　　者：付立彬[1] 宋梦[1] 蔡海勇[1] 

机构地区：[1]黄河科技学院工学院,河南郑州450063

出　　处：《施工技术》2015年第5期103-106,共4页Construction Technology

基　　金：河南省教育厅科学技术研究重点项目(13B560983)

摘　　要：采用有限元软件MIDAS/GTS对郑州地铁桐柏路站的深基坑分层开挖和阶梯开挖两种开挖方式进行三维建模,分析了围护桩和地表沉降的变化规律,并与实测值进行了对比,结果表明阶梯开挖引起的位移与实测值更接近,更能反映实际施工情况。This paper used finite element software MIDAS/GTS to establish the three-dimensional model of the deep foundation excavation for Tongbai Road subway station in Zhengzhou by stratified excavation and stepped excavation, and analyzed the variation regularity of piles and ground settlement, and compared with the measured results. The results show that the displacement caused by ladder excavation is closer to measured values, and reflect the actual construction.

关 键 词：地铁 深基坑 开挖方式 监测 数值模拟 变形 

分 类 号：U231[交通运输工程—道路与铁道工程]