CRD法不同施工工序的比较与分析

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。

Comparison of and Analysis on Different Working Procedures of CRD Method

Applying ANSYST. 1 FEM program, the paper makes 2 - D FEM side drift of Guanghualu station of line 10 of Beijing Subway by means of working procedures of CRD method on the internal forces of the surrounding simulation on the construction process of the ANSYS 7.1, analyzes the effect of different rockmass and the structure and on the settlement of the ground surface, defines the optimum construction scheme that can control the surface settlement effectively , and makes 3-D FEM simulation on the optimum scheme. Through the calculations and analysis, some conclusions are a- chieved,which can provide theareatical basis and technical guidance for the construction methods selected for the side arift of Guanghualu station and other similar works.