双线钢管混凝土简支系杆拱桥顶推施工浅议

Brief discussion on incremental launching construction of concrete filled double-lane steel pipe simple supported tied arch bridge

依托津秦客专工程津山外绕汤河特大桥上跨既有秦东下行线顶推施工,分析了系杆拱桥顶推施工重点及难点,详细介绍了设计施工方案及步骤,具体阐述了顶推施工关键工艺及工序,以期指导类似工程的施工。

According to the incremental launching construction of existing Qindong down line on the up-span of Tanghe extra big Bridge sur- rounded by Jinshan in Jin-Qin passenger special line project, the thesis analyzed the important points and difficult points in incremental launch- ing construction of tied arch bridge, made a detailed introduction to designing construction plan and procedure, expounded the key technology and processes of the incremental launching construction, so as to guide the construction of the similar projects.