In the case of under the Metro Line 1 cross-channel in Beijing Wukesong underground parking garage project,using theoretical calculation and numerical simulation,the numerical analysis software named MIDAS GTS / NX is selected to build a dimensional model by simulation of lateral channel excavation and supporting the actual construction process.From the results of calculation and analysis,the force and deformation laws of each structure are obtained.The reasons based on theory are analyzed.Finally,by guiding and predicting the project we can take the necessary precautionary measures for the project to make the construction of safe and orderly conduct.%北京五棵松地下停车库工程下穿1号线地铁横通道,施工中采用理论计算分析及数值模拟计算方法,选取岩土数值分析软件MIDAS GTS/NX,建立三维模型模拟横向通道开挖和支护结构施工的实际过程.从计算分析施工引起的隧道和已有结构的变形和受力结构得出了各结构的变形规律和受力规律,并指导和预测旌工,对施工过程制订预案,保证施工安全有序的进行.
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