摘要
以新建天津至保定铁路天津段跨越西外环河及西外环特大桥主桥实际工程为背景,建立了该桥的整体有限元模型,并根据相关规范的要求,定义了五种荷载组合工况,计算分析了在结构自重、桥面铺装荷载、预应力荷载及混凝土收缩徐变效应基础上逐步增加风荷载、单线、双线及三线列车荷载后该桥的斜拉索应力,确定了斜拉索应力最大的荷载组合,对类似桥梁的设计、施工具有很好的参考价值。
In this paper,the whole bridge model was built with the new bridge which steps over the Xiwaihuan river and the Xiwaihuan large bridge in Tianjin section of Tianjin to Baoding railway as the actual project background.According to the requirements of the relevant specification,five kinds of load combination conditions were defined.Based on the dead load of the low-pylon cable-stayed bridge,bridge deck pavement load,reinforced prestressed load and the effect of concrete shrinkage and creep,the author calculated and analyzed the cable stress of this bridge by gradually increasing the wind load,single train load,double lines train load,three lines train load.And then the stress of the largest cable load combination was determined.It has good reference value to the design and construction of similar bridges.
出处
《施工技术》
CAS
北大核心
2014年第S1期295-299,共5页
Construction Technology
关键词
桥梁工程
铁路
矮塔斜拉桥
有限元分析
应力
bridges
railway
low-pylon cable-stayed bridge
finite element analysis
stress
