摘要
某些既有桥梁经常会出现资料缺失的情况,如何评估其通行能力往往困扰着桥梁管理部门。以某15m跨没有图纸资料的旧桥通行泥头车及平板车的安全评估为背景,首先介绍了从理论上计算该桥安全通行泥头车及平板车的荷载条件,然后介绍了从试验上对该桥梁通行泥头车及平板车进行安全评估的方法,并给出了评估结果。
A finite element model of a single tower cable-stayed bridge was established. An optimization of initial stay-cable force was conducted based on the force of steel box girder; initial stay-cable forces considered con- struction stages were also calculated in this paper. Stay-cable forces and stresses in each cable replacement con- dition were calculated. Extreme values and corresponding variation were analyzed. Stress of box girders and tow- ers were also calculated in order to determine whether limitation of traffic is necessary. At last, vertical displacements of box girder in each cable replacement condition were analyzed.
出处
《广东公路交通》
2013年第5期22-26,共5页
Guangdong Highway Communications
关键词
简支梁桥
缺失资料
安全评估
single tower cable-stayed bridge
finite element analysis
cable replacement analysis