华北平原季冻区重载列车振动传播规律研究

PDF(2389 KB)

振动与冲击 ›› 2018, Vol. 37 ›› Issue (23) : 286-291.

论文

华北平原季冻区重载列车振动传播规律研究

董捷1，2，武志辉1，2

作者信息 +

Propagation laws of heavy-haul trains-induced ground vibration in seasonal frozen area of north China plain

DONG Jie1，2,WU Zhihui1,2

Author information +

文章历史 +

摘要

通过华北平原季冻区大秦重载铁路不同时期现场实测试验，实测路堤及地基在列车行驶振动荷载作用下振动加速度反应，深入研究季冻区重载车致地表振动的传播特性。研究发现，随着列车轴重的增加及速度的提升，铅垂向加速度峰值及平均值明显增大；随着测点与路肩水平距离的增大，加速度特征值迅速衰减，路肩至坡脚之间的衰减幅值较大，约为51%~71%，距路肩70 m处衰减达90%以上。此外，重载列车交汇运行相比单侧列车运行振动响应程度显著增大，加速度峰值提高约10%~39%。同时，振级随测点至路肩水平距离的增大总体呈现出衰减趋势，但局部出现波动现象。列车沿线地表层冻结后，随水平距离的增加振动能量逐步下降，但加速度特征值相对地表未冻结前平均提高约10%~26%，且地表冻结后加速度频谱分布范围较广，优势频段中高频成分较为丰富。

Abstract

To further study vibration propagation induced by the heavy-haul train in the seasonally frozen area,this paper examines the world’s largest heavy-freight railway-the Daqin Railway.The vibration accelerations of the embankment and foundation under the operation of the trains are measured during summer、autumn and winter.It is shown that with increasing axle weight and train speed,the peak and mean values of the acceleration increased.When the horizontal distance between the measuring point and the shoulder increases,the acceleration characteristic value decays rapidly.The vibration acceleration attenuated the most from the shoulder to the embankment footing,and the vibration attenuation trend is slowing down when the distance is 5 m away from the shoulder.The increase of train speed will increase the vibration amplitude,but when the vehicle speed increases to about 90 km/h,the change of speed has less influence on the vibration acceleration amplitude.The water content of soil layer in summer and autumn has little effect on surface vibration.The presence of surface frozen soil layer increases the overall stiffness of the embankment and the site,and the acceleration is 10%—26% greater than that of the unfrozen period with the wider acceleration spectrum and high-frequency components.

导出引用

董捷1，2，武志辉1，2. 华北平原季冻区重载列车振动传播规律研究[J]. 振动与冲击, 2018, 37(23): 286-291

DONG Jie1，2,WU Zhihui1,2. Propagation laws of heavy-haul trains-induced ground vibration in seasonal frozen area of north China plain[J]. Journal of Vibration and Shock, 2018, 37(23): 286-291

参考文献

[1] Salvador P, Real J, Zamorano C, et al. A procedure for the evaluation of vibrations induced by the passing of a train and its application to real railway traffic. Mathematical and Computer Modelling, 2011; 53: 42-54.
[2] 和振兴,翟婉明,杨吉忠,等.铁路交通地面振动的列车-轨道-地基耦合数值方法研究[J].振动工程学报,2008,21(5):488-492.
    HE Zhen-xing, ZHAI Wan-ming, YANG Ji-zhong, et al. Train-track-ground coupling numerical method for railway traffic induced ground vibration [J]. Journal of Vibration Engineering, 2008, 21(5):488-492.
[3] 高广运,李志毅,冯世进,等.秦-沈铁路列车运行引起的地面振动实测与分析[J].岩土力学,2007,28(9):1817-1822, 1827.
    GAO Guang-yun, LI Zhi-yi, FENG Shi-jin, et al. Experimental results and numerical predictions of ground vibration induced by high-speed train running on Qin-Shen Railway[J]. Rock and Soil Mechanics, 2007, 28(9):1817-1822, 1827.
[4] Zhang ZH, Zhang XD, Qiu HS, et al. Dynamic characteris tics of track-ballast-silty clay with irregular vibration levels generated by high-speed train based on DEM. Construction and Building Materials, 2016; 125: 564-573.
[5] Bian XC, Jiang HG, Chang C, et al. Track and ground vibrations generated by high-speed train running on ballastless railway with excitation of vertical track irregularities. Soil Dynamics and Earthquake Engineering, 2015; 76: 29-43.
[6] Sayeed MA, Shahin MA. Investigation into Impact of Train Speed for Behavior of Ballast ed Railway Track Foundations. Procedia Engineering, 2016; 143; 1152-1159.
[7] Connolly D, Giannopoulos A, Forde MC. Numerical modelling of ground borne vibrations from high speed rail lines on embankments. Soil Dynamics and Earthquake Engineering, 2013; 46: 13-19.
[8] 李琼林,凌贤长,张锋,等.季节变化对列车行驶路基动应力的影响及简化计算方法[J].地震工程学报,2015,37(3):782-788.
    LI Qiong-lin, LING Xian-chang, ZHANG Feng, et al. Effect of seasonal variations on the dynamic stress in subgrade soils induced by passing trains and a simplified calculation method on it[J]. CHINA EARTHQUAKE ENGINEERING JOURNAL,2015, 37(3):782-788.
[9] 马利衡,梁青槐,谷爱军,等.沪宁城际高速铁路路基段振动试验研究及数值分析[J].铁道学报,2014,(1):88-93.
    MA Li-heng, LIANG Qin-hui, GU Ai-jun, et al. Experimental study and numerical analysis on vibrations of subgrades of Shanghai-Nanjing Inercity High-speed Railway[J]. JOURNAL OF THE CHIN RAILWAY SOCIETY, 2014, (1):88-93.
[10] Bian XC, Jiang HG, Cheng C, et al. Full-scale model testing on a ballastless high-speed railway under simulated train moving loads. Soil Dynamics and Earthquake Engineering, 2014; 66: 368-384.
[11] Xiao JH, Wang BL, Liu CY, et al. Influences of Subgrade Form and Ground Stiffness on Dynamic Responses of Railway Subgrade under Train Loading: Field Testing Case Study. Procedia Engineering, 2016; 143: 1185-1192.
[12] 王启云,张家生,孟飞,等.高速铁路路基模型列车振动荷载模拟[J].振动与冲击,2013,32(6):43-46, 72.
    WANG Qi-yun, ZHANG Jia-sheng, MENG Fei, et al. Simulation of train vibration load on the subgrade testing model of high-speed railway [J]. JOURNAL OF VIBRATION AND SHOCK, 2013, 32(6):43-46,72.
[13] 陈建国,夏禾,肖军华,等.列车运行对周围地面振动影响的试验研究[J].岩土力学,2008,29(11):3113-3118.
    CHEN Jian-guo, XIA He, XIAO Jun-hua, et al. Experimental study of ground vibrations induced by moving train[J]. Rock and Soil Mechanics, 2008, 29(11):3113-3118.
[14] Chen RP, Zhao X, Wang ZZ, et al. Experimental study on dynamic load magnification factor for ballastless track-subgrade of high-speed railway. Journal of Rock Mechanics and Geotechnical Engineering, 2013; 5(4): 306-311.
[15] Kuo KA, Verbraken H, Degrande G, et al. Hybrid predictions of railway induced ground vibration using a combination of experimental measurements and numerical modelling. Journal of Sound and Vibration, 2016; 373: 263-284.
[16] Kouroussis G, Vogiatzis KE, Connolly DP. A combined numerical/experimental predicti on method for urban railway vibration. Soil Dynamics and Earthquake Engineering, 2017; 97: 377-386.
[17] Kouroussis G, Connolly DP, Olivier B, et al. Railway cuttings and embankments: Experimental and numerical studies of ground vibration. Science of the Total Environment, 2016; 557–558: 110-122.
[18] 陈迎庆.重载铁路列车运行引起的环境振动试验分析[J].铁道建筑,2016,(9):148-150.
    CHEN Ying-qing. Experimental analysis on environmental vibration induced by heavy haul railway train travelling [J]. Railway Engineering, 2016, (9):148-150.
[19] Petriaev A. The Vibration Impact of Heavy Freight Train on the Roadbed. Procedia Engineering, 2016; 143: 1136-1143.
[20] 王福彤,陶夏新,崔高航,等. 地面城轨交通近轨道区域自由地表振动实测研究[J].振动与冲击,2011,30(5):131-135.
    WANG Fu-tong, TAO Xia-xin, CUI Gao-hang, et al. Test in situ for free ground vibration near urban railway line [J]. JOURNAL OF VIBRATION AND SHOCK, 2011, 30(5):131-135.