兰青线某框架桥承载能力分析  

Analysis of frame bridge carrying capacity in lanqing railway

作　　者：李英杰[1] 洪帅[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《内江职业技术学院学报》2010年第1期44-46,共3页Journal of Neijiang Vocational & Technical College

摘　　要：随着我国铁路事业的蓬勃发展，货物列车重载已是未来的重要的发展趋势，货物列车重载导致了已有的桥梁出现了一些新的情况。为了能够确定兰青线上某座框架桥在超重荷载下能否安全运行，对框架桥承载力进行检算，通过确定计算参数及公式并运用有限元软件建立模型实现承载力检算，得出了桥梁的剪切强度、刚度及挠度计算数据，据此查询规范进行检算，并针对计算结果提出了建议，提出工作中缺乏的项目。With the development of the heavy cargo train,cargo train being important in the future has been the development direction of overloading, while some new situation are come out in old bridge. In order to identify whether a frame bridge in overweight loads could run safely, bearing capacity of frame bridge on LanQing railway are checked. Check on the bearing capacity by identifying calculation formula then use the finite element software establish the finite element model, then mainly introduces the shear strength, stiffness of the bridge and the deflection, then puts forward reasonable suggestions.

关 键 词：框架桥 桥梁检算 有限元模型 挠度 刚度 

分 类 号：U272.033.1[机械工程—车辆工程]