筒型基础结构稳定性分析的有限元方法  

Finite Element Method for Stability Analysis of Cylindrical Foundation Structures

作　　者：王元战[1] 肖忠[1] 李元音[2] 谢善文[2] 

机构地区：[1]天津大学建筑工程学院天津市港口与海洋工程重点实验室,天津300072 [2]中交第一航务工程勘察设计院有限公司,天津300222

出　　处：《中国港湾建设》2010年第A01期100-104,共5页China Harbour Engineering

摘　　要：筒型基础结构是适用于软土地基的一种港口与海岸工程结构型式,依靠沉入地基的下部圆筒的嵌固作用维持结构的稳定性。文中给出了构造简型基础结构-地基系统弹塑性有限元数值模型的要点,提出了基于有限元数值计算结果进行结构稳定性判别的准则,建立了筒型基础结构稳定性分析的有限单元方法,并通过实例计算进行了检验分析,表明筒型基础结构稳定性分析的有限元方法是准确、可靠的,可用于港口与海岸工程结构稳定性设计计算。Cylindrical foundation structure is a new type of structure applied in port and coastal engineering. The stability of the structure is sustained by the cylindrical foundation embedded in soil. In this article, the key points to form the elastic-plastic finite element model of cylindrical foundation structure is presented, the criterions to judge the stability of the structure according to the finite element calculations are proposed and the finite element method for stability analysis of cylindrical foundation structures is established. The method is tested through an example. It is shown that the finite element method for stability analysis of cylindrical foundation structures presented herein is accurate and reliable, which can be used in stability analysis of port and coastal structures.

关 键 词：筒型基础结构 稳定性 有限元模型 

分 类 号：U656.24[交通运输工程—港口、海岸及近海工程] TU432[交通运输工程—船舶与海洋工程]