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采用ANSYS7.1版有限元分析程序,以北京地铁10号线光华路站侧洞为对象,对其施工过程进行了二维有限元模拟计算,分析了CRD法的不同施工工序对围岩内力、结构内力以及地表沉降的影响,并确定出能够有效地控制地表沉降的最优开挖方法,对最优的施工方案进行了三维有限元模拟。通过计算分析,得出了一些结论,为光华路站侧洞以及相似工程所采用的施工方法提供了理论依据与技术指导。
By using ANSYS7.1 finite element analysis program, taking the side tunnel of Guanghua Road Station of Beijing Metro Line 10 as an example, the construction process of the project was simulated by two-dimensional finite element method. The influence of different construction procedures of CRD on internal force, Structure internal forces and surface subsidence, and determine the optimal excavation method that can effectively control surface subsidence. The optimal construction scheme is simulated by 3D finite element method. Through calculation and analysis, some conclusions are drawn, providing theoretical basis and technical guidance for the construction methods used in the side tunnel of Guanghua Road Station and similar projects.