深基坑环梁支护结构的性状分析  

Analysis on behavior of ring beam retaining structures of deep foundation pit

作　　者：曾律弦[1,2] 潘泓[2] 肖四喜[1] 

机构地区：[1]湖南理工学院土建系,湖南岳阳414006 [2]华南理工大学土木工程系,广东广州510640

出　　处：《四川建筑科学研究》2009年第3期115-118,共4页Sichuan Building Science

基　　金：湖南省教育厅科研基金项目(06C382)

摘　　要：环梁支护结构包括支护桩、压顶梁、环梁及内支撑和竖向支柱等,空间作用明显。针对结构体系内力、变形较为复杂,而其内力、变形特性在工程应用中极为重要的情况,将环梁支护结构体系假设为在水、土压力和地面超载等荷载作用下、由桩和环梁等构成的空间体系,进行整体分析和计算。通过一个典型空间分析模型,重点探讨了环梁抗弯刚度、压顶梁刚度、水平支撑系统的竖向位置等因素对这种支护结构内力、变形性状的影响规律,得出了一些对该种支护结构研究及工程应用较有价值的结论。Ring beam retaining structures including piles, top beams, ring beams, bracings and bottom shore possess obvious spatial character. Because the behavior of internal force and deformation of ring beam retaining structures is very complex and also the base of applying the structures on engineering, the structure was analysed as a whole space system with pile and ring beam bearing water pressure, soil pressure and ground load. The influences of some factors which affecting the behavior of ring beam retaining structure were analysed by a typical 3-D model, including the flexural rigidity of ring beam, the stiffness of top beam and the depth of horizontal bracing system. The conclusions are valuable in theory and practice.

关 键 词：深基坑 环梁 支护结构 性状分析 

分 类 号：TU463[建筑科学—结构工程]