地铁车辆段大跨度梁后张法预应力施工技术探讨

A method of post-tensioned construction technology on Metro Depot large span beam

地铁车辆段平台下部常设置停车列检库、运用库等库房,平台上部预留上盖物业开发条件。为了增多库房内列车股道,同时满足上盖物业荷载承载力要求,设计上往往减少平台下柱网布置、采用大跨度后张法预应力梁结构。本文对某车辆段大跨度梁后张法预应力施工方法进行了探讨,可为今后类似工程提供参考。

Abstract： The lower part of the metro depot platform is often set for train parking, the upper part need to be reserved for property develop- ment. In order to increase the train track below the platform, at the same time to satisfy the superstructure load capacity requirements, platform column arrangement is often reduced and large span post - tensioned beam structure is used by designer. In this paper, a method of post - tensioned construction technology on Metro Depot large span beam is discussed, which can provide reference for similar projects in the future.