软件模拟新建地铁穿越既有线路的影响分析与实践

Software Simulation Analysis and Practice of the Influence of New Subway Crossing Existing Lines

新建地铁下穿既有地铁施工时必然对既有地铁产生影响,使既有线结构产生变形,从而影响地铁运营安全。文章对盾构法施工下穿城市轨道交通既有线进行研究,采用有限元分析模型分析具体项目在盾构施工过程中既有线的受力情况,分析预测施工扰动下既有线的变形值及安全状态,确保施工过程中既有线的安全,为后续类似穿越工程提供依据和参考。

When the new subway runs under the existing subway for construction,it will inevitably affect the existing subway,deform the existing line structure,and thus affect the safety of the subway operation.This paper studies the existing lines through urban rail transit under shield construction,uses the finite element analysis model to analyze the stress of existing lines in the process of the shield construction,and analyzes and predicts the deformation value and safety state of the existing lines under the construction disturbance,in order to ensure the safety of the existing lines during construction,and provide basis and reference for the design,construction and monitoring measurement of similar crossing projects.