Midas／Civil 在大跨斜拉桥几何非线性分析中的应用

摘要

结合某大跨径混合梁斜拉桥工程，运用Midas／Civil软件建立了其完整有限元模型，阐述了斜拉桥各部件具体简化方法以及斜拉桥合理成桥状态计算方法，对各种典型工况实现方法进行了说明，通过比较线性计算结果与非线性计算结果，论述了该软件在大跨度桥梁几何非线性分析时的应用方法。%Combining with a large span hybrid girder cable stayed bridge engineering,this paper established its complete finite element model using Midas/Civil,elaborated the specific simplified method of cable stayed bridge each component and reasonable bridge situation calculation method of cable stayed bridge,illustrated the implementation method of various typical working conditions,through comparing the linear calcula-tion results and nonlinear calculation results,discussed the application method of this software in large span bridge geometric nonlinear analysis.