一种地铁地下线路与市政桥梁长距离共路由整合分建的线路设计方法

Design Method for Integrating and Constructing Long-Distance Shared Routes Between Underground Metro Lines and Municipal Bridges

为解决地铁地下线路与市政桥梁在城市道路上长距离共路由敷设存在空间、结构、建设时序等相冲突的问题,提出一种地铁地下线路与市政桥梁长距离共路由敷设、同位不同期整合分建的线路设计方法,介绍地铁立柱与市政桥梁桩基共建、地铁围护桩基兼作市政桥梁桩基等设计方法,使地铁地下线路与市政桥梁既能分开建设,互不影响各自建设时序和工期,又能整体合一,避免侵入破坏沿线周边地块,节省城市道路空间资源和工程投资,实现综合集约设计建设。实际工程应用案例表明,该线路设计方法可以产生较好的社会和经济效益,避免破坏土地价值至少18亿元。本设计方法应用的前提是地铁和市政桥梁两者需要提前规划、预留条件。

Integration of underground metro lines and municipal bridges interact in long-distance shared routing presents challenges in spatial alignment,structural compatibility,and construction scheduling.The author proposes a design method for coordinated routing,phased construction,and subsequent integration of underground metro lines and municipal bridges.The approach includes a co-construction design for metro columns and municipal bridge pile foundations,as well as the adaptation of metro retaining pile foundations for dual use as municipal bridge pile foundations.This method enables independent construction of metro underground lines and municipal bridges while minimizing interaction,reducing costs,and enhancing construction efficiency.The implementation of this design yields significant social and economic benefits.Effective application of the method requires early-stage coordinated planning of metro and municipal bridge projects.