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.
出处
《桥梁建设》
EI
CSCD
北大核心
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)
关键词
管柱基础
水平荷载
效应分析
cylindrical shaft foundation
lateral load
effect analysis
