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电力隧道建设位于地铁正上方,基坑开挖将会影响地铁结构的安全,本文以广州一工程实例探讨基坑开挖对地铁沉降的影响,首先在与地铁评估单位沟通的基础上,对在建电力隧道上跨地铁区间的设计方案进行调整,然后结合电力隧道基坑开挖的实际情况,采用三维有限元模型分析此保护措施的可行性,可为同类工程提供一定的参考价值。
The construction of power tunnel is just above metro and excavation of foundation pit will affect the safety of metro structure. This paper discusses the influence of excavation on subsidence of metro based on an example of Guangzhou Project. Based on the communication with metro evaluation unit, Based on the actual situation of electric excavation of power tunnel, the feasibility of this protection measure is analyzed by 3D finite element model, which can provide some reference value for similar projects.