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以某商业基坑为研究对象,通过MIDAS/GTS软件建立三维有限元模型,分析了基坑开挖对既有地铁结构的影响。结果表明,地铁结构的最大水平位移和最大竖向位移都控制在规范允许的范围之内,基坑开挖对地铁结构的影响较小;同时,针对基坑开挖过程中可能存在的风险提出了相应的处理措施,对同类基坑的设计与施工有一定的指导意义。
Taking a commercial foundation pit as the research object, a three-dimensional finite element model was established by MIDAS / GTS software and the influence of excavation on the existing subway structure was analyzed. The results show that the maximum horizontal displacement and the maximum vertical displacement of the metro structure are controlled within the allowable range of the code, and the influence of the excavation on the subway structure is small. At the same time, in view of the possible risks in the excavation of the foundation pit The corresponding treatment measures for the design and construction of similar pit has a certain significance.