大直径管柱基础水平荷载效应分析  

Analysis of Lateral Load Effect of Large Diameter Cylindrical Shaft Foundations

作　　者：王保群[1] 张强勇[1] 李晋[2] 

机构地区：[1]山东大学岩土与结构工程研究中心,山东济南250061 [2]山东交通学院土木工程系,山东济南250023

出　　处：《桥梁建设》2008年第4期36-38,46,共4页Bridge Construction

基　　金：国家自然科学基金资助项目(40772173);山东省教育厅科技计划项目(J07WA09)

摘　　要：通过建立管柱基础空间三维有限元模型,对不同长径比条件下管柱桩基础在水平荷载作用下的水平位移分布规律进行了仿真分析,得出大直径管柱桩基础的刚性与柔性界定标准及柱身第一水平位移零点随桩入土深度的变化规律,以及桩周土体模量的变化对桩身各截面拉应力影响不明显的结论。By way of establishing a three-dimensional finite element model for the cylindrical shaft foundations, this paper conducts the simulation analysis of the distribution laws of lateral displacement of the cylindrical shafts of different length-to-diameter ratios under the action of lateral load and obtains the judgment criteria for the rigidity and flexibility of the large diameter cylindrical shafts, the laws of zero point of the first lateral displacement of the shafts varying with the depth of the shafts in soil and also the conclusion that the variations of soil modulus around the shafts do not have significant influence on the tensile stress in different sections of the shafts.

关 键 词：管柱基础 水平荷载 效应分析 

分 类 号：U443.133[建筑科学—桥梁与隧道工程]