地铁小半径曲线段上列车车内振动测试与特性
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摘要
列车行驶在小半径曲线段上时的振动加速度一般大于在同种轨道结构直线段上的值。为了研究在小半径曲线段上行驶时列车车内振动的频谱特性,选择半径为350 m的地下隧道区间进行测试,该区间内分布着钢弹簧浮置板整体道床、科隆蛋扣件和DT-III型扣件3种轨道结构。分析采用双面胶带、螺钉等多种传感器安装方式对测量结果的影响,采用DASP V11软件测量一天中3个不同时段车厢地板垂向和横向振动加速度,并进行Z振级和X振级分析。结果表明:半径为350 m的曲线隧道内,钢弹簧浮置板整体道床、科隆蛋扣件和DT-III型扣件3个区段上车厢地板振动对应的垂向振级峰值频率分别为8 Hz和63 Hz,3.15 Hz、8 Hz和63 Hz,50 Hz和100 Hz;横向振级峰值频率为63 Hz,63Hz,50 Hz和100 Hz;钢弹簧浮置板整体道床段和科隆蛋扣件段上车厢地板振动加速度大于其在DT-III型扣件段上的值。本次测试可为小半径曲线段上列车振动噪声问题提供一些减振降噪措施选择方面的参考,同时可为在小半径曲线段上车厢地板振动特性问题的研究提供支持。
In the metro line, vibration acceleration of the train traveling in the small radius curved section is generally greater than that in the straight section. In order to study the spectral characteristics of the vibration in the metro train traveling in the small radius curved section, an underground tunnel section with a radius of 350 m is selected for testing. The steel spring floating board monolithic track bed, Cologne egg fasteners and DT-III fasteners are placed in the section respectively. The effects of various sensor mounting methods, such as double-sided tape and screws, on the measurement results are analyzed. The vertical and lateral vibration accelerations of the carriage floor at three different times of the day are measured using DASP V11 software, and Z-level and X-level analysis is performed. The results show that the peak frequencies of the vertical vibration level corresponding to the steel spring floating board monolithic track bed, Cologne egg fasteners and DT-III fastener segments are 8 Hz and 63 Hz,3.15 Hz、8 Hz and 63 Hz, 50 Hz and 100 Hz, respectively; The peak frequencies of the lateral vibration level are 63 Hz, 63 Hz, 50 Hz and 100 Hz, respectively.The vibration acceleration of the vehicle floor in the monolithic track bed section and Cologne egg fasteners section are larger than that in the DT-III fasteners sections. This test results provide some references for vibration and noise reduction measures, as well as some support for the study of the floor vibration characteristics for the small radius curved segments.
In the metro line, vibration acceleration of the train traveling in the small radius curved section is generally greater than that in the straight section. In order to study the spectral characteristics of the vibration in the metro train traveling in the small radius curved section, an underground tunnel section with a radius of 350 m is selected for testing. The steel spring floating board monolithic track bed, Cologne egg fasteners and DT-III fasteners are placed in the section respectively. The effects of various sensor mounting methods, such as double-sided tape and screws, on the measurement results are analyzed. The vertical and lateral vibration accelerations of the carriage floor at three different times of the day are measured using DASP V11 software, and Z-level and X-level analysis is performed. The results show that the peak frequencies of the vertical vibration level corresponding to the steel spring floating board monolithic track bed, Cologne egg fasteners and DT-III fastener segments are 8 Hz and 63 Hz,3.15 Hz、8 Hz and 63 Hz, 50 Hz and 100 Hz, respectively; The peak frequencies of the lateral vibration level are 63 Hz, 63 Hz, 50 Hz and 100 Hz, respectively.The vibration acceleration of the vehicle floor in the monolithic track bed section and Cologne egg fasteners section are larger than that in the DT-III fasteners sections. This test results provide some references for vibration and noise reduction measures, as well as some support for the study of the floor vibration characteristics for the small radius curved segments.
引文
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[12]INTERNATIONAL ORGANIZATION FOR STAND-ARDIZATION.ISO 2631-1997:Mechanical vibration and shock-evaluation of human exposure to whole-body vibration Part 1:general requirement[S].1997.
[2]徐博,周劲松,赵阳阳,等.地铁车辆车体局部结构振动控制研究[J].铁道车辆,2015,53(2):1-4.
[3]张玉梅,肖新标,温泽峰,等.低地板车结构传声及车内噪声特性研究[J].噪声与振动控制,2014,34(4):1-4.
[4]郭金莹,王勇,石怀龙.地铁车辆地板共振机理分析及解决方案[J].机械,2013,40(9):6-9.
[5]JU S H,LIN H T,HUANG J Y.Dominant frequencies of train-induced vibrations[J].Journal of Sound&Vibration,2009,319(1-2):247-259.
[6]NAKAGAWA C,SHIMAMUNE R,WATANABE K,et al.Fundamental study on the effect of high-frequency vibration in the vertical and lateral directions on ride comfort[J].Journal of Mechanical Systems for Transportation&Logistics,2010,51(3):287-293.
[7]DIANA GIORGIO,CHELI FEDERICO,COLLINAANDREA,et al.The development of a numerical model for railway vehicles comfort assessment through comparison with experimental measurements[J].Vehicle System Dynamics,2002,38(3):165-183.
[8]盛涛,张善莉,单伽锃,等.地铁振动的传递及对建筑物的影响实测与分析[J].同济大学学报(自然科学版),2015,43(1):54-59.
[9]贾颖绚,杜林林,王文斌,等.地铁曲线段Vanguard扣件减振效果分析[J].北京交通大学学报,2018,42(1):47-54.
[10]黄守域,曹广忠,张华超,等.地铁车辆客室振动测试研究[J].城市轨道交通研究,2011,14(4):99-102.
[11]于雪莲.加速度传感器安装方式对灵敏度的影响[J].中国计量,2017(2):114-116.
[12]INTERNATIONAL ORGANIZATION FOR STAND-ARDIZATION.ISO 2631-1997:Mechanical vibration and shock-evaluation of human exposure to whole-body vibration Part 1:general requirement[S].1997.