【摘要】 为了分析地铁运行对地面环境的振动影响,以ABAQUS为计算平台,建立了不同埋深下地铁车站-地基动力相互作用二维有限元模型。输入不同频率的简谐荷载,通过数值计算得到了地面点振动与输入荷载频率的关系;输入实测的列车振动荷载,得到了地铁车站埋深不同时地面点的振动规律;改变土的力学参数,对结果进行对比分析,得到了土的性质对振动传播的影响规律。为地铁车站的选址和地铁车站附近建筑物的隔震减震提供了依据。更多还原

【Abstract】 In order to study ground vibrations induced by metro running,metro station-foundation dynamic interaction 2-dimensional finite element models with different station burial depths are established on the platform of ABAQUS finite-element software.With harmonic loads with different frequencies inputs,the relationship between ground vibration and input load’s frequency is obtained through numerical calculations.With actual train vibration load inputs,the ground vibration characteristics under different station burial depths are obtained.With mechanical parameters of soil changed,the vibration propagation characteristics influenced by soil itself are obtained.The results provide some useful references for both site selection of metro-stations and vibration reduction of adjacent buildings.更多还原