深大基坑空间内支撑结构整体受力性能研究  

Research on the Overall Force Performance of The Space Inner Strut Structure within Deep Excavation

作　　者：蒋峻峰[1] 姚顺忠[1] 吴永红[2] 

机构地区：[1]西南林业大学土木工程学院,昆明650224 [2]云南省建筑科学研究院,昆明650000

出　　处：《森林工程》2013年第4期124-127,共4页Forest Engineering

基　　金：国家自然科学基金项目(50878152)

摘　　要：高层建筑和地下空间的大量开发,使得基坑面积越来越大,深度越来越深,基坑结构表现出的空间效应越来越明显,原有的将支挡结构各部分分开计算的平面计算方法与实际工程监测结果有较大出入,通过具体实例运用三维有限元,将支挡结构作为一个整体,考虑支挡结构各部分的相互协调作用,对内支撑整体受力性能进行具体分析,对基坑支护中出现的一些问题进行分析。With the rapid development of high-rise building and the underground space,the area and depth of the excavation becomes bigger and bigger.The inner strut structure has shown more obvious spatial effects,however,the traditional plane simplified calculation methods were still applied,whose calculation results could differ significantly from the monitoring results of the actual deformation.In this article through a specific case,each inner component of the space strut was regarded as a whole and depicted with three dimensional finite element.By considering the coordination role of the retaining structures,the overall force performance of the space inner strut was analyzed,specifically.Finally,some problems occurred during a specific excavation engineering were analyzed.

关 键 词：深大基坑 空间内支撑 排桩 整体受力 有限元 

分 类 号：S772[农业科学—森林工程]