紧邻地铁盾构隧道超深基坑设计及计算分析
Design and computation of deep foundation pit adjacent to shield tunnel of metro
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摘要: 紧邻地铁隧道基坑变形控制非常严格。以深圳中国人寿大厦基坑工程为背景,介绍了紧邻地铁隧道超深基坑的难点及应对措施。采用平面应变渗流耦合有限元法结合基坑支护形式和地下水控制措施对各种设计方案进行了计算分析和比较。并与监测数据进行了对比。Abstract: The deformation of deep excavations adjacent to metro tunnel should be strictly controlled. Based on the excavation of China Life Building, the difficulties and countermeasures of deep excavations adjacent to metro tunnel are introduced. For the support forms and groundwater control measures for the excavation, various design schemes are calculated and compared using the plane strain-seepage coupling finite element method. The results are compared with the monitoring data.