地铁运行引起邻近建筑振动的有限元分析

Three-dimensional Numerical Analysis of Vibration of Adjacent Buildings Caused by Subway Operation

为研究地铁列车运行引起邻近建筑物振动的影响,本文主要利用ABAQUS数值模拟方法,以Dload子程序模拟列车荷载,建立多种建筑模型,计算并提取相应的振动加速度数据,对比分析塔式楼与板式楼的振动特征,并分析框架结构中结构墙设置对建筑振动的影响。分析结果表明,高层建筑中,随着建筑层数的增加,振动强度呈现先增大、再衰减、后增大的趋势;框架结构设置较多结构墙,将为振动波的传播提供更多介质,加剧了框架结构受地铁运行引起的振动反应。

In order to study the influence of the vibration of adjacent buildings caused by subway operation,this pa⁃per mainly used the ABAQUS numerical simulation method to simulate the train load with the Dload subroutine,es⁃tablished a variety of building models,calculated and extracted the corresponding vibration acceleration data,com⁃pared the vibration characteristics of tower buildings and slab buildings,and analyzed the influence of structural walls in frame structures on building vibration.The analysis results show that in high-rise buildings,as the number of floors increases,the vibration intensity presents a trend of first increase,then attenuation and then increase;the frame structure is equipped with more structural walls,which will provide more media for the propagation of vibration waves,and aggravate the vibration response of the frame structure caused by subway operation.