铁路特大系杆拱桥箱形现浇拱肋施工技术

Construction Technology of Box Arch Rib Cast-in-place of Extra Tied Arch Railway Bridge

主要介绍了改建铁路成都枢纽新建成都北编组站第2标段三环路立交特大桥铁路双线系杆拱大跨度现浇箱形拱(主跨56m、双线铁路桥)施工技术。对系杆拱现浇支架、混凝土施工、预应力施工方案进行了深入的探讨,从而找出了施工现浇箱形拱的最优方案,对于类似工程的施工具有一定的借鉴和指导意义。

This article introduces the construction technology of large-span cast-in-place box arch （ main span of 56m, twolane railway bridge） of two-lane tied arch railway bridge of Three Loop Interchange Railway Bridge of contract No. 2 for rebuild Chengdu railway hub and new-build Chengdu North Marshalling Station. Tied arch bridge of east-in-place bracket, concrete construction, prestressed construction program have been carried out in-depth discussion, and to find the optimal program of the construction of box arch cast-in-place and have a reference and guiding siguificanee for the construction of similar projects.