摘要
以下穿运营铁路框架桥为研究背景,针对依托工程需对1-16 m既有框架桥拆除后,在框架桥原址位置扩建(5.0+12.25+12.25+5.0)m四孔框架桥,利用既有框架桥和人工挖孔桩为支点,采用D型钢便梁分四次加固铁路线路,框架桥依次线外预制后顶进施工方法。此工程的实施为下穿铁路框架桥既有箱涵拆除和工点处新建扩建框架桥施工工艺操作提供参考。
The following wear operating railway frame bridge as the research background,for relying on the project to 1-16 m existing frame bridge removed,in the frame bridge site location expansion(5.0+12.25+12.25+5.0)m four hole frame bridge,using the existing frame bridge and artificial hole pile for fulcrum,using D steel girder in four reinforcement railway lines,frame bridge in order after the prefabricated jacking construction method.The implementation of this project provides a reference for the demolition of the existing box culvert under the railway frame bridge and the construction process operation of the new and expanded frame bridge at the working site.
作者
牟时珪
Mu Shigui(Gansu Sixth Construction Group Co.,Ltd.,Lanzhou Gansu 730030,China)
出处
《山西建筑》
2024年第16期147-151,共5页
Shanxi Architecture
关键词
运营铁路
框架桥
既有涵拆除
顶进施工工艺
railway operation
frame bridge
existing culvert removal
jacking construction technology
