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随着城市轨道交通工程的不断发展,地铁等城市轨道设计、实施过程中不断出现新建工程与既有工程的交叉设计、实施。交叉节点工程通常涉及到既有结构破除复建或同期共建,其中交叉节点处的防水处理对整个工程至关重要。本文以广州地铁七号线西延段陈村新城站为工程依托,研究破除复建既有地下隧道结构中新老混凝土的防水处理,为后续同类工程提供参考。
With the continuous development of urban rail transit projects and the design of metro and other urban railways, the cross-design and implementation of new projects and existing projects are constantly emerging. Cross-node project usually involves the reconstruction of the existing structure or simultaneous construction, of which the waterproofing at the cross-node is crucial to the whole project. Based on the project of Chencun New Town Station on the west extension of Guangzhou Metro Line 7, this paper studies the waterproofing treatment of the old and new concrete in the existing underground tunnel structure and provides reference for the subsequent similar projects.