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建立了工作竖井与盾构隧道、明挖隧道相连的空间交叉结构三维模型,采用FLAC3D对该复杂结构进行了横向地震响应分析,得到了工作竖井与隧道连接处支护结构关键点的位移和应力响应规律。通过对地震横向激励过程中竖井与隧道连接处支护结构收敛位移和关键点主应力峰值的分析,对该结构的横向抗震性能做出了评价。
A three-dimensional model of cross-structure of work shaft, shield tunnel and open cut tunnel was established. Transverse seismic response analysis of the complex structure was carried out by FLAC3D. The displacement and stress of the key points of the support structure at work shaft and tunnel were obtained. Response rules. The lateral seismic behavior of the structure is evaluated by analyzing the convergence and displacement of the support structure at the connection of the shaft and tunnel and the principal stress peak at the key point during the lateral seismic excitation process.