Three‐dimensional Numerical Analysis of Ground Vibration Induced by Subway Running

Lin-Ya Liu ； Qi-Le Zhang ； Shun-Mao Mao

《Study of Civil Engineering and Architecture》 3卷 (2014/12) Pp. 107-111

並列摘要

Based on the finite element software ANSYS, the paper establishes the rail‐track plate ‐tunnel‐soil dynamic interaction finite element model. Wheel/rail forces are applied to the finite element model for calculating transient analysis. From the point of view of time domain and frequency domain, the paper analyses the influences on the vibration characteristics of the earth's surface caused by factors such as the rule tunnel buried depth, soil elastic modulus, up line and downlink tunnel distance. The analytic results show that the increasing tunnel buried depth can effectively reduce the surface vibration. Elastic modulus of soil has great influence on the surface vibration, with the increasing soil elastic modulus, the vibration response of the ground first increases then decreases. Increasing the net distance between double line tunnels is one of the measures to control the ground vibration.

並列關鍵字

3D Finite Element Model ； Vibration ； Acceleration ； Time Domain ； Frequency Domain