高速公路浅埋隧道施工过程动态监测与三维有限元仿真分析

结合河南某高速公路浅埋隧道实际工程,在现有隧道施工过程动态监测与数值模拟的基本理论方法的基础上,建立三维有限元模型研究了浅埋隧道施工过程中围岩位移变化规律。通过仿真成果与隧道围岩位移实测值的比较,认为数值模拟分析中得到的施工过程中隧道围岩位移场变化规律基本与实际相符合,从而便于更好地开展施工监控和施工指导工作。

Dynamic Monitoring and FEM Simulation Analysis of an Shallow-depth Expressway Tunnel

Based on the in-situ dynamic measurements and theoretical method of tunneling construction numerical simulation,a FEM model is established to simulate the deformation behaviors of the tunnels of Henan freeway.By comparing with the the time series of in-situ measures and FEM calculation results,the variety regulation of the displacement field in numerical simulation analysis is consistent with the fact.Thus,the numerical analysis can be used in construction monitoring and guide.