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随着城市地铁网络的快速发展,地铁结构物施工与周围结构物施工活动间的相互作用时常对地铁结构的安全带来挑战。其中,在地铁隧道施工贯通后或运营前的时间段内,地铁周边深基坑开挖、地铁轴线上方堆重载等外部原因,会造成隧道轴线偏移、隧道结构变形受损等严重问题。为确保地铁隧道结构安全,采用了隧道抢险治理加固技术,实施表明,该技术可以达到预期效果。
With the rapid development of urban subway network, the interaction between subway structure construction and construction activities of surrounding structures often challenges the safety of metro structures. Among them, during the tunnel construction period before operation or before operation, excavation of deep foundation pits around the subway and overloading of heaps above the subway axis may cause serious problems such as the deviation of the tunnel axis and the damage of the tunnel structure. In order to ensure the safety of metro tunnel structure, tunnel reinforcement and reinforcement technology is adopted, which shows that the technology can achieve the expected results.