竖井开挖对路基变形影响的数值分析

该文通过数值模拟,分析了某竖井开挖对既有路基变形性能的影响。为了预测竖井开挖对路基变形的影响,分别计算了竖井开挖过程中和竖井开挖后移动荷载作用时路基的变形。分析结果表明,竖井开挖时引起路基变形较大,路基开挖后移动荷载作用时对路基的变形影响较小。根据计算结果,结合工程经验,路基开挖对路基的变形和列车的运行影响很小。

Numerical Value Analysis on Influence of Shaft Excavation on Roadbed Deformation

The article analyzes the influence of a shaft excavation on the deformation performance of the existing roadbed by the simulation of numerical value.In order to forecast the influence of shaft excavation on the roadbed deformation,the article separately calculates the roadbed deformations during the moving load action in the course of shaft excavation and after shaft excavation.The analyzing result makes clear that the roadbed deformation caused by the shaft excavation is larger and the influence after the roadbed excavation during the moving load action on the roadbed deformation is smaller.Based on the calculation result,and combined with the engineering experience,the influence of roadbed excavation is very small on the roadbed deformation and the train operation.