配合地铁施工的人行天桥改建

Transformation of passenger foot-bridge by cooperating with subway construction

以具体工程为例,针对地铁施工与人行过街天桥桩基的矛盾,通过方案比选和结构分析,确定人行天桥钢梁替换方案最优,改造后原桥下部结构满足规范要求,可大量推广应用于城市轨道交通施工中对中小跨径桥梁的改造。

Taking specific engineering as an example, in light of the contradictory between subway construction and passenger foot-bridge pile foundation, through scheme comparison and structural analysis, the paper determines the optimal scheme of passenger foot-bridge replacing steel beam. As a result, the transformed low bridge structure meets norms, which can be widely applied in small-span bridge transformation in urban rail transit construction.