轨道交通盾构施工中沿线老桥拆复综合设计

Removing & Restoring Integrated Design for Old Bridges along Rail Transit Shield Construction

以宁波轨道交通1号线老桥拆复为例,介绍了轨道交通盾构施工中,为使盾构顺利掘进,需要将与盾构相碰撞的桥桩先拔除。着重介绍了桥梁拆除施工期间交通组织、老桥桩基拔除关键技术和管线迁移工程等。最后指出桥梁拆复设计中的一些关键问题。

Taking the removing and restoring of the old bridge along Ningbo Rail Transit Line 1 for example,the bridge pier colliding with the shield should be extracted in advance for the shield smooth tunneling in the field of rail transit shield construction.Several key points are introduced covering traffic organization,the key technique for old pile extracting,pipelines relocations,etc.Finally,some important problems are pointed out about the removing & restoring bridge design.