【摘要】 为探究地铁车辆行车对环境振动的影响规律，通过对某地铁车辆段试车线环境振动进行现场实测，评估不同车速以及不同轨道形式对周围环境振动造成的影响，并采用1/3倍频的方法研究了源强以及盖板的振动特性。研究结果表明：在30～60 km/h区间内，车速每增加10 km/h，普通断面的轨枕和邻柱处Z振级分别增加2.2 dB和1.7 dB；梯形轨枕能大幅减少传递给轨道外结构的振动，相比于普通断面，梯形轨枕断面的轨枕和7.5 m处地面测点Z振级分别减小3.4 dB和10.1 dB；试车线上列车运行速度较快，引起的振动能量较大，如不加以控制将远超振动标准允许值，设置在试车线附近24 m范围内的上盖建筑物的振动值需重点关注。更多还原

【Abstract】 In recent years, the rail transit industry has developed rapidly, but the environmental vibration problems caused by metro operation have attracted more and more attention. In this paper, the environmental vibration of the test line of a metro depot is measured on site, and the influence of different vehicle speeds and different track forms on the surrounding environmental vibration is evaluated. The vibration characteristics of the source strength and the cover plate are studied by using the method of 1/3 frequency doubling. The results show that in the range of 30～60 km/h, for every 10 km/h increase in vehicle speed, the Z vibration level at the sleeper and adjacent column of the ordinary section increases by 2.2 dB and 1.7 dB respectively. The trapezoidal sleeper can greatly reduce the vibration transmitted to the outer structure of the track. Compared with the ordinary section, the Z vibration levels of the sleeper and the ground measuring point at 7.5 m of the trapezoidal sleeper section are reduced by 3.4 dB and 10.1 dB, respectively. The train running speed on the test line is fast, and the vibration energy caused by it is large. If it is not controlled, it will far exceed the allowable value of the vibration standard. The vibration value of the upper building set within 24 m near the testing line needs to be focused on.更多还原