大纵坡桥梁受力性能分析

Analysis of Stress Performance of Large Longitudinal Slope Bridge

张家界市永定区原始地貌大部分为邻水低山岸坡,地形起伏较大,地势东南高西北低,同时桥梁受交通组织、线路要求以及投资的控制,设计时不可避免地出现大纵坡,甚至极限纵坡,存在较大的风险。为此,文章采取理论计算与数值模拟的方法,分析了大纵坡桥梁的受力特点,实现了极限纵坡桥梁的结构模式优化设计。研究成果可以服务于本工程,并为类似工程提供借鉴。

Yongding District of Zhangjiajie City, the original landscape for most of Linshui low mountain slope,undulating terrain, high terrain southeast northwest low, at the same time bridge by the traffic organization, line requirement and investment control, design inevitably large longitudinal slope ,and even limit the longitudinal slope, there is a big risk.Therefore, this paper adopted the method of theoretical calculation and numerical simulation to analyze the stress characteristics of the large longitudinal slope bridge, and realized the optimal design of the structural mode of the ultimate longitudinal bridge.The research results can serve the proiect and provide reference for similar projects.