移动荷载作用下离散支承浮置板轨道振动响应研究

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摘要浮置板轨道作为一种有效减振方式在城市轨道交通中获得了广泛的应用。将浮置板分别视为质量块、Euler梁和短梁，利用振型叠加法得到了三种离散支承浮置板轨道模型的振动方程，并采用Runger-Kutta法求解其响应结果。计算结果表明，将浮置板等效为质量块和长梁是浮置板轨道模型的两种极端情况，实际浮置板轨道模型计算结果介于这两个计算模型之间。浮置板存在一个临界长度，此时长梁-短梁模型和双长梁的结果基本一致。当浮置板长度很短时（0-0.6m），浮置板可以等效为质量块；当浮置板较长时（大于临界长度），可以整体等效为长梁；浮置板为有限长度短梁时，随着浮置板长度的增加，钢轨的挠度和浮置板支承内力会逐渐减少。对浮置板减振特性分析表明，增加浮置板长度、增加钢轨扣件刚度、增加浮置板抗弯刚度、减少浮置板支承刚度是改进浮置板减震性能和行车舒适性的有效办法。

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关键词 ：浮置板轨道, 振型叠加法, 浮置板长度, 钢轨挠度, 浮置板支承内力

Abstract：Floating slab track as an effective means is widely applied in urban rail transportation to reduce train-induced vibration.Here, a floating slab was simplified as a mass, an infinite Euler beam and a short beam, respectively.Three dynamic equations for a discretely supported floating slab track were derived using the mode superposition method, respectively.Its vibration responses were numerically solved with Runge-Kutta method.The calculation results showed that a floating slab modeled as a mas or an infinite beam are two extreme cases of a floating slab track model, the calculation result of the actual floating slab track model is between those of the two extreme track models; a floating slab has a critical length, when its length is equal to the critical one, the response result of the long beam-short beam model agrees well with that of the two-long beam model; when the length of a floating slab is very short (0—0.6 m), the floating slab can be modeled as a mass; when its length is larger than its critical length, it can be modeled as a long beam; when a floating slab is a short beam with a finite length, rail deflection and bearing force of the slab decreases with increase in the slab length.The vibration reduction characteristics analysis for floating slabs showed that increasing floating slab length, stiffness of rail pad, and flexural stiffness of floating slab or decreasing floating slab’s support stiffness is an effective method to improve its vibration reduction performance and train running comfort.

Key words： Floating slab track mode superposition method length of floating slab rail deflection force in slab bearing

收稿日期: 2017-04-20 出版日期: 2018-09-28

引用本文:

黄强 1,2,黄宏伟 1,2，张冬梅 1,2. 移动荷载作用下离散支承浮置板轨道振动响应研究[J]. 振动与冲击, 2018, 37(19): 190-197.
HUANG Qiang1,2, HUANG Hongwei1,2, ZHANG Dongmei1,2. Vibration response of discretely supported floating slab track under a moving load. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(19): 190-197.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2018/V37/I19/190

[1] DAWN T M, STANWORTH C G. Ground vibration from passing trains[J]. Journal of Sound and Vibration, 1979, 66(3): 355-362.
[2] LAI C G, CALLERIO A, FACCIOLI E, et al. Prediction of railway-induced ground vibrations in tunnels[J]. Journal of Sound and Acoustics, 2005, 127(5): 503-513.
[3] CLOUTEAU D, ARNST M, AL-HUSSAINI T M, et al. Freefield vibrations due to dynamic loading on a tunnel embedded in a stratified medium[J]. Journal of Sound and Vibration, 20005, 283(1): 173-199.
[4] 楼梦麟, 李守继. 地铁引起建筑物振动评价研究[J]. 振动与冲击, 2007, 26(8): 68-71.
LOU Menglin, LI Shouji. Evaluation of building’s vibration induced by underground trains[J]. Journal of Vibration and Shock, 2007, 26(8): 68-71.
[5] 栗润德, 张鸿儒, 刘维宁. 地铁运行引起的地面振动及其对精密仪器的影响[J]. 岩石力学与工程学报, 2008, 27(1): 206-214.
LI Ruide, ZHANG Hongru, LIU Weining. Metro-induced ground vibrations and their impacts on precision instrument[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(1): 205-214.
[6] 楼梦麟, 贾旭鹏, 俞洁勤. 地铁运行引起的地面振动实测及传播规律分析[J]. 防灾减灾工程学报, 2009, 29(3): 282-288.
LOU Menglin, JIA Xupeng, YU Jieqin. Field measurement and analysis of ground vibration induced by subway trains[J]. Journal of Disaster Prevention and Mitigation Engineering, 2009, 29(3): 282-288.
[7] 夏禾, 曹艳梅. 轨道交通引起的环境振动问题[J]. 铁道科学与工程学报, 2004, 1(1): 44-51.
XIA He, CAO Yanmei. Problem of railway traffic induced vibrations of environment[J]. Journal of railway Scinece and Engineering, 2004, 1(1): 44-51.
[8] NELSON J. Recent developments in ground-borne noise and vibration control[J]. Journal of Sound and Vibration, 1996, 193(1): 367-376.
[9] GROOTENHUIS P. Floating slab isolation for railways[J]. Journal of Sound and Vibration, 1977, 51(3): 443-448.
[10] WILSON G P, SAURENMAN H J, Nelson J T. Control of ground-borne noise and vibration[J]. Journal of Sound and Vibration, 1983, 87(2): 339-350.
[11] FORREST J A. Modelling of ground vibration from underground railways[D]. Cambridge University, 1999.
[12] CUI F, Chew C H. The effectiveness of floating slab track system-PartⅠ. Receptance method[J]. Applied Acoustics, 2000, 61(4): 441-453.
[13] HUSSEIN M F M, Hunt H E M. Modelling of floating-slab tracks with continuous slabs under oscillating moving loads[J]. Journal of Sound and Vibration, 2006, 297: 37-54.
[14] HUSSEIN MFM, Hunt H E M. Modelling of floating-slab track with discontinuous slab Part 1: response to oscillating moving loads[J]. Journal of low frequency noise, vibration and active control, 2006, 25(1): 23-39.
[15] HUSSEIN MFM, Hunt H E M. Modelling of floating-slab Track with discontinuous slab Part 2: response to moving trains[J]. Journal of low frequency noise, vibration and active control, 2006, 25(2): 111-118.
[16] YUAN Jun, ZHU Yongchao, WU Minzhe. Vibration characteristics and effectiveness of floating slab track system[J]. Journal of Computers, 2009, 4(12): 1249-1254.
[17] KUO Chenming, HUANG Chenghao, CHEN Yiyi. Vibration characteristics of floating slab track[J]. Journal of Sound and Vibration, 2008, 317(3): 1017-1034.
[18] LI Z G, WU T X. Modelling and analysis of force transmission in floating-slab track for railways[J]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 222(1): 45-57.
[19] 翟婉明. 车辆-轨道垂向系统的统一模型及其耦合动力原理[J]. 铁道建筑，1992，14(3)：10-21.
ZHAI Wanming. The vertical model of vehicle-track system and its coupling dynamics[J]. Railway Engineering, 1992, 14(3): 10-21.
[20] YOUNG D. Vibration of rectangular plates by the Ritz method[J]. Journal of Applied Mechanics-Transactions of the ASME, 1950, 17(4): 448-453.