大跨度拱桥的非线性与稳定分析  

Nonlinearity and Stability Analysis for A Long-Span Arch Bridge

作　　者：颜全胜[1] 骆宁安[2] 韩大建[2] 王卫锋[1] 

机构地区：[1]华南理工大学交通学院,广东广州510640 [2]华南理工大学建筑学院

出　　处：《华南理工大学学报（自然科学版）》2000年第6期64-68,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目! (9840 35 )

摘　　要：考虑施工过程中结构体系不断变化、荷载逐步增加以及拱桥结构大位移等因素 ,建立了大跨度拱桥结构的非线性稳定计算模型 ,编制了相应的程序 .文中对某拱桥施工全过程的稳定性和几何非线性进行了模拟计算 ,得出了各个施工阶段稳定安全和非线性影响系数 ;In view of the effects of structural system change as well as the ever increasing loads during erection phases, an approach to the stability analysis of the arch bridge is presented. A program is developed and it can predict the nonlinear buckling of the arch bridge. The elastic lateral stability and the geometric nonlinear influential factors of a long span arch bridge during the construction phases are analyzed. Such analyses have provided the theoretical basis for the construction of the long span arch bridge.

关 键 词：大跨度拱桥 稳定分析 几何非线性 稳定计算模型 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]