城市有轨电车引发的建筑结构振动响应

为分析城市有轨电车运行引发的建筑结构振动舒适度，基于MATLAB设计结构振动舒适度的计算程序，可结合结构健康监测系统的监测数据对建筑结构的振动舒适度进行分析。采用某有轨电车运行中的实测数据，分析车辆段和行车段电车引发的振动，研究有轨电车的振动响应特性。分析结果表明：有轨电车运行引发的高频振动传至上盖结构几乎已完全消散；上盖结构的振动频率集中在16~20 Hz区间，以有轨电车的低频振动和结构相关附属机器的振动为主。减小有轨电车的行驶速度、增加建筑物与振动源的距离或控制楼内附属机器的振动可明显控制振动。在加速过程中，电车与地面和轨道会产生共振，因此存在振动加速度级的极大值。

Building vibration response induced by urban tram

To analyze the building vibration comfort caused by urban tram operation, the calculation program for the structure vibration comfort is designed based on MATLAB. The program can be used to analyze the building vibration comfort combining with the monitoring data of the structural health monitoring system. Using the measured data of a tram in operation, the vibrations of the car depot and operation depot induced by trams are analyzed, and the vibration response characteristic of tram is studied. The analysis results show that the high frequency vibration of the upper cover structure caused by the operation of the tram is almost completely dissipated; the vibration frequency of the upper cover structure is concentrated from 16 Hz to 20 Hz, which is mainly the low frequency vibration of the tram and the vibration of the structure subsidiary machine. The vibration can be significantly controlled by reducing the speed of the tram, increasing the distance between the building and the vibration source, or controlling the vibration of the subsidiary machine. During the acceleration process, the tram vesonates with the ground and track, and so there is a maximum value of the vibration acceleration level.