加劲压力钢管稳定性分析方法研究  

The Stability Analysis Method of Stiffener Penstock

作　　者：胡建兰[1] 靖建光 

机构地区：[1]华北水利水电学院,河南郑州450011 [2]邯郸光明电力建设监理有限公司,河南邯郸056001

出　　处：《洛阳大学学报》2007年第2期63-67,共5页Journal of Luoyang University

基　　金：国家自然科学基金资助项目(50079005)

摘　　要：总结了分析压力钢管局部稳定性的常用方法,提出了分析加劲压力钢管局部稳定性的半解析有限元法,推导出了圆柱壳单元的弹性刚度矩阵和几何刚度矩阵,考虑了初始缝隙对埋藏式加劲压力钢管抗外压稳定性的影响,并且编制了相应的半解析有限元计算程序,最后通过计算实例验证了半解析有限元法及程序的正确性与有效性.This article has summed up several common methods of the local stability analysis of stiffener penstock, present a semi-analytical finite element method to analysis the local stability of stiffener penstock, deduced the elasticity stiffness matrix and geometry stiffness matrix of column shell element, considered the influence of incipient interstice which affect the stability of stiffener penstock under external pressure. Furthermore, the calculating program is compiled. It is concluded that the semi-analytical finite element method and its computer program are accurate and valid through instance computation.

关 键 词：半解析有限元法 圆柱壳单元 局部稳定性 加劲压力钢管 

分 类 号：TU12[建筑科学—建筑理论]