不同类型装配式钢弹簧浮置板减振效果分析

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (22) : 270-278.

论文

不同类型装配式钢弹簧浮置板减振效果分析

任娟娟*1,2，梁捷1,2，屈昌衡1,2，李辰1,2，章恺尧1,2，刘锦辉3,赵华卫4

作者信息 +

Analysis on the vibration reduction effect of different types of prefabricated steel spring floating slabs

REN Juanjuan*1,2, LIANG Jie1,2, QU Changheng1,2, LI Chen1,2, ZHANG Kaiyao1,2, LIU Jinhui3，ZHAO Huawei4

Author information +

文章历史 +

摘要

为研究不同钢弹簧数量和钢弹簧刚度参数下装配式钢弹簧浮置板轨道的减振效果，且便于运输吊装，提出了三种类型装配式钢弹簧浮置板轨道。通过建立车辆-轨道-隧道耦合动力学模型对比分析了钢弹簧浮置板轨道的动力性能和减振效果，并在深圳地铁某号线路选取对应类型装配式钢弹簧浮置板结构断面和整体道床断面进行现场测试与仿真结果进行对比验证。研究结果表明：钢弹簧浮置板轨道与整体道床相比，钢轨和浮置板的垂向位移增加了57.23%~95%，垂向加速度减小了19.93%~60.13%；钢弹簧浮置板在16 Hz~200 Hz范围内的减振效果明显，最大减振效果可达16.61 dB；钢弹簧浮置板轨道均出现了道床的固有频率向低频偏移和浮置板的隧道壁振动加速度级超过整体道床的现象；三种类型装配式钢弹簧浮置板轨道的减振效果为：类型A>类型B>类型C，其中类型A的减振效果最好；仿真数据与现场实测数据误差率为1.43%~14.25%，减振效果误差在0~1 dB范围内。

Abstract

To study the vibration reduction effect of prefabricated steel spring floating slab track under different numbers and stiffness parameters of steel springs, and to facilitate transportation and lifting, three types of prefabricated steel spring floating slab track are proposed. The dynamic performance and vibration reduction effect of steel spring floating slab track were compared and analyzed through vehicle-track-tunnel coupling dynamic model. Field tests and simulation results were conducted to compare and verify different types of prefabricated steel spring floating slab track structures and monolithic track bed sections on a certain metro line in Shenzhen. The research results show that compared with the monolithic track bed, the vertical displacement of steel rail and floating slab increases by 57.23% to 95%, and the vertical acceleration decreases by 19.93% to 60.13%; The vibration reduction effect of the steel spring floating slab is significant in the range of 16 Hz to 200 Hz, with a maximum vibration reduction effect of 16.61 dB; The natural frequency of the monolithic track bed has shifted towards low frequencies and the vibration acceleration level of the tunnel wall of the steel spring floating slab track has exceeded that of the monolithic track bed; The vibration reduction effect of three types of structural prefabricated steel spring floating slab tracks is: Type A> Type B> Type C, with Type A having the best vibration reduction effect; The error rate between simulation data and on-site measured data is 1.43%~14.25%, and the vibration reduction effect error is within the range of 0~1 dB.

导出引用

任娟娟1, 2, 梁捷1, 2, 屈昌衡1, 2, 李辰1, 2, 章恺尧1, 2, 刘锦辉3, 赵华卫4. 不同类型装配式钢弹簧浮置板减振效果分析[J]. 振动与冲击, 2024, 43(22): 270-278

REN Juanjuan1, 2, LIANG Jie1, 2, QU Changheng1, 2, LI Chen1, 2, ZHANG Kaiyao1, 2, LIU Jinhui3, ZHAO Huawei4. Analysis on the vibration reduction effect of different types of prefabricated steel spring floating slabs[J]. Journal of Vibration and Shock, 2024, 43(22): 270-278

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