ANALYSIS AND EVALUATION OF GROUND VIBRATION RESPONSE INDUCED BY RAPID RAIL TRANSIT

摘要

With the fast development of urban rapid rail transit, the environmental vibration problem induced by urban rapid rail transit has aroused broad attentions of the scholars and the society.Based on the ABAQUS finite-element software and track irregularity theory to simulate the train vibration load, the nonlinear dynamic visco-elasto-plastic constitutive model which is based on Davidenkov model is used to describe the dynamic character of the soils. The characters of ground vibration induced by rapid rail transit are analyzed by taking Nanjing representative sites as research object. Ground surface vibration responses with different sites and different train speeds are also obtained. Ground surface acceleration vibration level is used to describe the intensity of ground surface vibration. The intensity of ground surface vibration is evaluated and analyzed to give basic information to the further research and control of ground surface vibration induced by rapid rail transit.