高架地铁的轨道结构振动测试及对高架桥的影响分析
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摘要
为研究高架地铁的轨道结构振动特性以及地铁运行时对高架桥的影响,对郑州市地铁城郊线某段进行了振动测试,以梯形轨枕道床和普通道床两种轨道结构的实测结果为基础进行对比分析,实测结果表明,50Hz以下梯形轨枕道床减振效果与频率有关,在15Hz～40Hz时,竖向振动与水平向振动均出现放大,因此如果需要控制该频率段的振动时,应慎重评估梯形轨枕道床的减振效果。本文可为类似高架地铁的轨道结构和高架桥设计提供参考。
In order to study the vibration characteristics and impact on viaducts induced by railway with different track structures, a vibration test was conducted on a subway section in the suburb of Zhengzhou. The data at locations with ordinary sleeper bed and ladder sleeper bed were collected and compared. The results indicated that the vibration reduction effect of the ladder sleeper bed is related to the frequency when the frequency is below 50 Hz. When the frequency falls between 15 to 40 Hz, both the vertical and horizontal vibration are amplified. Thus, the vibration reduction effect of the ladder sleeper track bed should be carefully evaluated when the applied frequency falls in this band. This study provided a reference for similar design of the track structures and viaducts.
In order to study the vibration characteristics and impact on viaducts induced by railway with different track structures, a vibration test was conducted on a subway section in the suburb of Zhengzhou. The data at locations with ordinary sleeper bed and ladder sleeper bed were collected and compared. The results indicated that the vibration reduction effect of the ladder sleeper bed is related to the frequency when the frequency is below 50 Hz. When the frequency falls between 15 to 40 Hz, both the vertical and horizontal vibration are amplified. Thus, the vibration reduction effect of the ladder sleeper track bed should be carefully evaluated when the applied frequency falls in this band. This study provided a reference for similar design of the track structures and viaducts.
引文
[1]刘卫丰,刘维宁,马蒙,等.地铁列车运行引起的振动对精密仪器的影响研究[J].振动工程学报,2012, 25(2):130-137
[2]苏宇,刘维宁,孙晓静.梯形轨道减振性能试验研究和数值模拟分析[J].都市快轨交通,2007, 20(6):50-54
[3]康佐,董霄,郑建国,等.钢弹簧浮置板道床在西安地铁中减振效果分析[J].地震工程学报,2015, 37(2):372-376Kang Zuo, Dong Xiao, Zheng Jianguo, et al. Vibration Reduction Effect of Steel-spring Floating Slab Track Bed Applied to Xi an Metro[J]. China Earthquake Engineering Journal, 2015, 37(2):372-376
[4]林渝轲,吴梦瑶,王平.120 km/h地铁多种减振轨道结构现场测试与分析[J].铁道标准设计,2018, 62(2):67-71.LIN Yu-ke, WU Meng-yao, WANG ping. Test and Analysis of Different Subway Track Structures at the Speed of 120km/h[J]. RAILWAY STANDARD DESIGN, 2018, 62(2):67-71
[5] GB/T 10071-1988城市区域环境振动测量方法[S]GB/T 10071-1988 Measurement method of environmental vibration of urban area[S]
[6]曾少辉.轨道交通高架箱梁振动特性模型试验研究[D].南昌:华东交通大学,2017Zeng Shaohui. Experimental Study on Vibration Characteristics of Viaduct Box-Girder For Rail Tramsit[D]. Nanchang:East China Jiaotong University, 2017
[2]苏宇,刘维宁,孙晓静.梯形轨道减振性能试验研究和数值模拟分析[J].都市快轨交通,2007, 20(6):50-54
[3]康佐,董霄,郑建国,等.钢弹簧浮置板道床在西安地铁中减振效果分析[J].地震工程学报,2015, 37(2):372-376Kang Zuo, Dong Xiao, Zheng Jianguo, et al. Vibration Reduction Effect of Steel-spring Floating Slab Track Bed Applied to Xi an Metro[J]. China Earthquake Engineering Journal, 2015, 37(2):372-376
[4]林渝轲,吴梦瑶,王平.120 km/h地铁多种减振轨道结构现场测试与分析[J].铁道标准设计,2018, 62(2):67-71.LIN Yu-ke, WU Meng-yao, WANG ping. Test and Analysis of Different Subway Track Structures at the Speed of 120km/h[J]. RAILWAY STANDARD DESIGN, 2018, 62(2):67-71
[5] GB/T 10071-1988城市区域环境振动测量方法[S]GB/T 10071-1988 Measurement method of environmental vibration of urban area[S]
[6]曾少辉.轨道交通高架箱梁振动特性模型试验研究[D].南昌:华东交通大学,2017Zeng Shaohui. Experimental Study on Vibration Characteristics of Viaduct Box-Girder For Rail Tramsit[D]. Nanchang:East China Jiaotong University, 2017