节点文献
横向承载群桩的有限元计算分析
The Finite Element Analysis of Pile Groups Subjected to Lateral Loads
【作者】 冯世挺;
【导师】 俞亚南;
【作者基本信息】 浙江大学 , 市政工程, 2003, 硕士
【摘要】 目前,国内外对横向荷载作用下群桩的分析方法较多,但在工程应用上仍远不能满足要求。 本文首先运用目前国内外应用较为广泛的有限元软件ANSYS对群桩基础进行有限元分析:分析了横向荷载作用下群桩的桩距、桩数、桩径、桩长、土体模量等因素对群桩效应的影响,得出了一些有益的结论。 随后,本文将p-y曲线法与杆系有限元法相结合,采用线性插值函数来逼近土对桩的约束反力,得到新的桩—土相互作用的单元计算模型,推导了桩—土相互作用的单元刚度矩阵,建立了p-y模型的有限元求解方程,用MATLAB语言编制了相应的p-y曲线有限元法计算程序,进行横向承载桩的计算分析。 最后,结合跨钱塘江线塔工程,运用p-y曲线有限元法计算程序,进行线塔基础的非线性计算分析,为工程设计提供参考依据。
【Abstract】 At present,there are many research methods on pile groups subjected to lateral loads at home and abroad. However,it is still far from meeting the demands of pile groups appliances in engineering.Using the finite element software ANSYS,the article calculates and analyses the behavior capacity of pile groups first. It discusses the influence factors of pile groups effect,such as pile space,pile number,pile diameter,pile length and soil parameter etc.Subsequently,using linear interpolation function to approximate the soil’s anti force to piles,the article combines p-y curves with pole system FEM. In this way,a new pile-soil interaction element calculated model is designed,the pile-soil interaction element stiffness matrix is deduced,and establishes finite element equation of p-y model,writes the relevant finite element program with MATLAB language,calculates and analyses pile groups subjected to lateral loads with engineering examples.
【Key words】 p-y curve; finite element method; lateral loads; pile groups effect; pile groups;
- 【网络出版投稿人】 浙江大学 【网络出版年期】2003年 01期
- 【分类号】TU473.1
- 【被引频次】19
- 【下载频次】653