铁路高架车站车致振动实测与理论分析

发布时间：2019-05-09 05:10

【摘要】：为了研究铁路高架车站不同区域的环境振动规律,针对某客运专线高架车站,分别在轨道梁跨中、办公间、候车厅布置了三向振动测点,测试了高速动车组以正线速度通过时高架车站内不同区域的环境振动水平,从振动加速度时程、振动加速度级、频谱三方面分析了试验数据;利用车-线-桥耦合振动理论,研究了轨道梁动力响应和列车走行性.研究结果表明:办公间的Z振级达80.7 dB,超出规范限值0.7 dB;高架车站环境振动以竖向为主;办公间竖向振动持时比水平振动长15%;候车厅楼板的横向振动比轨道梁振动持时长1.03 s;振动在由轨道梁向车站楼板传递的过程中,高频振动比低频衰减快.
[Abstract]:In order to study the law of environmental vibration in different areas of railway elevated station, three-way vibration measuring points were arranged in the middle of track beam span, office room and waiting hall respectively for a passenger dedicated railway elevated station. The environmental vibration level of the high speed EMU in different areas of the elevated station at positive linear velocity is tested. The test data are analyzed from three aspects: vibration acceleration time history, vibration acceleration level and frequency spectrum. Based on the coupled vibration theory of vehicle-line-bridge, the dynamic response of track beam and train walking performance are studied. The results show that the vertical vibration of the elevated station reaches 80.7 dB, above the standard limit of 0.7 dB;, and the vertical vibration duration of the office space is 15% longer than that of the horizontal vibration. The transverse vibration of the waiting room floor is 1.03 s longer than that of the track beam, and the high frequency vibration attenuation is faster than that of the low frequency vibration in the process of the transfer from the track beam to the station floor.
【作者单位】：西南交通大学土木工程学院;
【基金】：国家自然科学基金资助项目(51378429,51308469) 新世纪优秀人才支持计划项目(NCET-10-0701) 国家863计划资助项目(2011AA11A103) 高等学校博士学科点专项科研基金资助项目(20110184110020)
【分类号】：TU311.3

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