Investigation on the Deloading Characteristic of Sound Barrier on High-speed Railway

doi:10.3901/JME.2018.08.008

Abstract

Abstract: Deloading sound barrier is one way to improve the structure safety and reliability of sound barrier on high-speed railway. Investigation on the sound barrier deloading characteristic has an important value of engineering application. Here, two indexes to evaluate deloading characteristic are given:the pressure deloading rate and the strain deloading rate, then the deloading performance of the sound barrier on high-speed railway are experimentally investigated. The result shows, both the pressure and strain deloading rate can reflect the deloading performance of sound barrier, but there are also differences under different train speeds and barrier heights. With the increasing of train speeds and barrier heights, the change of strain deloading rate is small, however, varies of strain crest-trough difference with train speeds increases with the increasing of barrier heights. The sound barriers with different heights have different pressure deloading rates, and the higher sound barrier is, the bigger pressure deloading rate becomes. In addition, the pressure deloading rate has little relationship with train speeds.

Key words: deloading characteristic, experimental study, high-speed railway, sound barrier

CLC Number:

O359

LÜ Ming, LI Qiang, NING Zhi, JI Zhao, SUN Chunhua. Investigation on the Deloading Characteristic of Sound Barrier on High-speed Railway[J]. Journal of Mechanical Engineering, 2018, 54(8): 8-16.

References

[1] 石明. 高速铁路声屏障气动载荷特性的试验研究[D]. 北京:北京交通大学, 2015. SHI Ming. Experimental research of aerodynamic load on sound barrier of high-speed railway[D]. Beijing:Beijing Jiaotong University, 2015.
[2] 戴泉玉, 叶凯, 尚小东, 等. 声屏障在城市交通噪声污染防治中的应用前景分析[J]. 交通节能与环保, 2007, 3(6):33-35. DAI Quanyu, YE Kai, SHANG Xiaodong, et al. Application prospect of noise barrier in the prevention of urban traffic noise pollution[J]. Energy Conservation & Environmental Protection in Transportation, 2007, 3(6):33-35.
[3] LICHTNEGER P, RUCK B. Full scale experiments on vehicle induced transient loads on roadside plates[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2015, 136:73-81.
[4] CARASSALE L, BRUNENGHI M M. Dynamic response of track side structures due to the aerodynamic effects produced by passing trains[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2013, 123:317-324.
[5] ZHU Ning, SUN Shouguang, LI Qiang, et al. Theoretical research and experimental validation of elastic dynamic load spectra on bogie frame of high-speed train[J]. Chinese Journal of Mechanical Engineering, 2016, 29(3):498-506.
[6] 郑史雄, 王林明. 铁路声屏障风荷载体型系数研究[J]. 中国铁道科学, 2009, 30(4):46-50. ZHENG Shixiong, WANG Linming. Study on the wind load shape coefficients of railway noise barriers[J]. China Railway Science, 2009, 30(4):46-50.
[7] 周信, 肖新标, 何宾, 等. 高速铁路声屏障降噪效果预测及其验证[J]. 机械工程学报, 2013, 49(10):14-19. ZHOU Xin, XIAO Xinbiao, HE Bin, et al. Numerical model for predicting the noise reduction of noise barrier of high speed railway and its test validation[J]. Journal of Mechanical Engineering, 2013, 49(10):14-19.
[8] ZHAO H, ZHAI W M, CHEN Z. Effect of noise barrier on aerodynamic performance of high-speed train in crosswind[J]. Wind and Structures, 2015, 20(4):509-525.
[9] LI Y, TIAN H Q. Lateral aerodynamic performance and speed limits of double-deck container vehicles with different structures[J]. Journal of Central South University, 2012, 19(7):2061-2066.
[10] 王季卿. 高架道路声屏障的设计与实效[J]. 噪声与振动控制, 2001, 21(6):7-13. WANG Jiqing. Design principals and the shielding effect of sound barrier alongside the elevated roadway[J]. Noise and Vibration Control, 2001, 21(6):7-13.
[11] SATO D, HANSAKA M, MAMADA S. Development of a wind load reduction sound proof system[J]. Quarterly Report of Rtri, 2012, 53(3):180-184.
[12] WATANABE Y, YOSIDA I, KUBO Y, et al. A basic study on a noise barrier for reduction of wind load[J]. Journal of infrasture Planning and Management, 1996, 530:117-122.
[13] HOMMA S, SUSUKI T, HANADA N, et al. Wind responses of constitutive members of a tower-supported steel stack[J]. National Symposium on Wind Engineering, 2005, 18:479-484.
[14] 薛林海, 刘冀钊, 刘立斌, 等. 一种高速铁路的减载式声屏障结构:中国, CN201320476156.8[P]. 2014-04-23. XUE Linhai, LIU Jizhao, LIU Libin, et al. A kind of deloading noise barrier structure on high-speed railway:China, CN201320476156.8[P]. 2014-04-23.
[15] 刘靖天. 高速铁路减载式声屏障气动载荷数值模拟及结构承载分析[D]. 北京:北京交通大学, 2016. LIU Jingtian. Aerodynamic load simulation and structural loading analysis of high-speed railway deloading noise barrier[D]. Beijing:Beijing Jiaotong University, 2016.
[16] 李锋. 减载式声屏障气动载荷特性的模拟实验及仿真研究[D]. 北京:北京交通大学, 2014. LI Feng. Study on characteristics of aerodynamic load on deloading noise barrier based on laboratory experiments and simulation[D]. Beijing:Beijing Jiaotong University, 2014.