盾构穿越桥梁桩基改造设计研究

Research on Reconstruction Design of Shield Crossing Bridge Pile Foundation

以上海轨道交通L17盾构区间穿越桥梁桩基进行改造设计为工程背景,对盾构穿越桥梁桩基改造设计方案进行对比研究。并通过3D实体模型分析盾构穿越对改造桥梁的影响,提出改造设计中关键应对策略,对以后进行此类结构的改造提供指导和参考。

Based on the engineering background of L17 shield tunnel crossing bridge pile foundation in Shanghai rail transit, this paper makes a comparative study on the design scheme of shield tunnel crossing bridge pile foundation. The influence of shield tunneling on bridge reconstruction is analyzed by 3 D entity model, and the key countermeasures in reconstruction design are put forward, which can provide guidance and reference for future reconstruction of this kind of structure.