谈桥梁门式墩横梁上跨铁路营业线施工技术

Discussion on construction technologies of bridge portal-pier horizontal-beam up-crossing railway operation line

在当前铁路大中型基建项目中,桥梁门式墩已广泛应用于新建铁路上跨既有铁路时,两条线路夹角较小的地段。以太原铁路枢纽西南环线工程汾太疏解特大桥30号~32号门式墩为例,详细介绍了门式墩横梁上跨铁路营业线时,有关棚洞支架搭设及横梁主体的施工技术,对类似工况的桥梁施工有一定参考意义。

In current railway large-scale fundamental construction project,bridge portal-pier has been widely applied in new railway up-crossing existing railway line at the section with smaller included angle between the two railway lines. Taking Fen-Tai interpreted extra-large bridge 30# ~32# portal-pier of southwestern ring line engineering of Taiyuan railway hub as an example,the paper specifically introduces the construction technologies of shed gallery support setting and major horizontal beam while portal-pier up-crossing railway operation line,which has certain guiding meaning for bridge construction with similar construction conditions.