大跨度斜拉索管桥几何非线性分析与数值模拟  

Geometric Nonlinear Analysis and Simulation for Long Span Cable-stayed Pipeline Bridge

作　　者：许萍[1] 李著信[1] 高松竹[2] 

机构地区：[1]后勤工程学院军事供油工程系,重庆400016 [2]成都军区联勤部油料装备修理所,成都610051

出　　处：《后勤工程学院学报》2008年第3期31-34,43,共5页Journal of Logistical Engineering University

摘　　要：介绍了影响大跨度斜拉索管桥几何非线性的3个主要影响因素，基于有限位移理论，考虑几何非线性影响因素，建立了大跨度斜拉索管桥在恒载以及斜拉索初始张力作用下的有限元模型。给出了大跨度斜拉索管桥的几何非线性分析方法，并在此基础上编制了有限元分析程序进行仿真计算。结合算例，探讨了几何非线性因素对大跨度斜拉索管桥结构的影响。研究结果表明，几何非线性因素存在耦合作用，在结构计算时需要综合考虑其影响。Three main nonlinear influencing factors for the long-span cable-stayed pipeline bridge are introduced. Based on the nonlinear theory and considering geometric nonlinear influencing factors, deadweight and initial stress of cables, a three dimensional finite element mathematical model is developed for the long-span cable-stayed pipeline bridge. The method for geometrical nonlinear analysis is given, and the program for simulation has been completed. In the calculation example, the effects of geometrical nonlinear factors are discussed. The results show that geometrical nonlinear factors have coupling effect, it should be considered in structure calculation.

关 键 词：斜拉索管桥 有限元模型 几何非线性 

分 类 号：TE973.94[石油与天然气工程—石油机械设备] U173.9[交通运输工程]