Field monitoring of vibration response and attenuation induced by heavy freight trains on viaduct
LUO Yi1，HU Jingjing1，2，YANG Yiqian3，LIU Penghui3，XU Jiayun1
(1. Hubei Key Laboratory of Roadway Bridge and Structure，Wuhan University of Technology，Wuhan，Hubei 430070，China； 2. School of Civil Engineering and Architecture，Wuhan University of Technology，Wuhan，Hubei 430070，China； 3. Railway Engineering Research Institute，China Academy of Railway Sciences，Beijing 100081，China)
Few researches were conducted on the law of the ground vibration induced by heavy haul trains and the influence on the houses nearby，based on field test of vibration velocity and acceleration around Shuo-Huang railway bridge above Shenshan Village，the propagation and attenuation law of the amplitude of vibration velocity is analyzed，a regression analysis method for vibration propagation attenuation of railway viaduct is proposed，it is found that the attenuation of each measuring point on the beam-end line is faster than that of the middle line of bridge，and the attenuation law is nonlinear. Based on the analysis of the measured data,the relationship between the peak vibration velocity of the particle and the distance from the excitation source，the train speed and the axle loadis obtained. There is a big difference between the same type of empty and full load trains，but there is little difference between the different models. Based on the analysis of the peak vibration velocity and acceleration level of the roof，indoor and basic measurement points，the comfort effects of the nearby houses and indoor people are studied. It is found that the vertical vibration of the roof is larger than that of the transverse direction between 10 and 20 Hz，and the vibration level of some bands have exceeded the standard.
罗 忆1，胡晶晶1，2，杨宜谦3，刘鹏辉3，徐家云1. 重载列车通过高架桥诱发地面振动传播与衰减规律的现场测试研究[J]. 岩石力学与工程学报, 2018, 37(S1): 3523-3532.
LUO Yi1，HU Jingjing1，2，YANG Yiqian3，LIU Penghui3，XU Jiayun1. Field monitoring of vibration response and attenuation induced by heavy freight trains on viaduct. , 2018, 37(S1): 3523-3532.
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2018, Vol. 37 
