温州市域铁路S1线是我国市域铁路先行先试的示范工程。为了给新建市域铁路环评工作提供参考，在S1线开展了环境振动源强的试验研究。研究结果及建议：相比地面测点，桥面测点的测试数据具备更好的稳定性和可靠性，市域铁路高架线环境振动源强测试建议采用桥面测点；采用ISO 2631—1:1985计权标准，VLz, max的计算值较采用ISO 2631—1:1997计权标准小2～4 dB。温州市域铁路S1线高架直线地段，市域动车组列车匀速95 km/h通过工况下，环境振动源强测试结果：采用ISO 2631—1:1997计权标准时为94.1 dB，采用ISO 2631—1:1985计权标准时为90.6 dB。基于所测有限工况的比较发现，列车运行速度增加15 km/h时，振动源强测试值增加3～5 dB；曲线地段曲线半径减小700 m时，振动源强测试值增加约4.5 dB。

The S1 line of the Wenzhou suburban railway is the first pilot demonstration project of a suburban railway in China. To provide technical guidance on the environmental assessment of suburban railways, an experimental measurement of the source intensity of environmental vibration was performed on the S1 line. The results and suggestions are as follows. The test data from the bridge deck measurement points have better stability and reliability than the ground measurement points. Thus, the bridge deck measurement point is recommended for the analogy test of the vibration source intensity of the suburban railway elevated line. The value of the vibration source intensity, VLzmax, using the ISO 2631-1: 1985 weighting standard is approximately 2–4 dB smaller than that of the ISO 2631-1: 1997 weighting standard. In the elevated straight-line section of the Wenzhou Railway S1 line, the measurement result of the source intensity of the environmental vibration at a uniform speed of 95 km/h of the municipal electric multiple unit train is as follows. The weighting standards are 94.1 and 90.6 dB for ISO 2631-1: 1997 and ISO 2631-1: 1985, respectively. In addition, the train passing speed and curve radius in the curve section have dissimilar effects on the measured value of the vibration source intensity, i.e., the 15 km/h increase in the train passing speed also increases the measured value by +3–5 dB. In contrast, the 700-m reduction in the curve radius in the curve section increases the measured value by +4.5 dB.

U231.1

湖北省技术创新重大专项(2019AAA059)；中铁第四勘察设计院集团有限公司重点课题(2018K126)