利用大型工字钢组拼临时支墩设计方案

Design Schemes for Temporary Buttress Composed by Large-Scale I-Bar

五一路立交桥跨越含长大正线在内的铁路线共计 1 2条 ,桥梁与铁路线曲线交汇 ,且斜交角度较小 ,线间距狭窄 ,地下障碍物多 ,为满足铁路行车安全界限的要求以及钢梁架设的要求 ,结合实际情况 ,经多方案比选确定采用大型工字钢制做悬臂形临时支墩。

Wuyilu grade separation bridge spans 12 railway lines including Chang-Da line.The bridge intersects the railway curves with a little diagonal intersection angle and a narrow interspace between lines,so there are a lot of hindrances under ground.Through multiple schemes contrast each to other,the cantilever shaped temporary buttresses have been made of large-scale I-bar, So as to satisfy needs for driving safety on railway,and needs for steel beam erection.