Analysis on the effect of railway environment vibration on precision instrument inside the plant

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (16) : 187-192.

论文

Analysis on the effect of railway environment vibration on precision instrument inside the plant

Zhang Peng-fei 1、2，Lei Xiao-yan 2，Gao Liang 1，Liu Qing-jie 2，Jiang Chong-da 2

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Abstract

The precision instruments which inside the plant along Longkou-Yantai railway as study object. In order to calculate the ground vibration response caused by freight train with different speeds, the track-bridge and pier-foundation-soil models are established by using finite element method. Then summarize the attenuation rule of vibration acceleration, velocity and displacement along the distance and analysis on the effect of railway environment vibration on precision instrument inside the plant. Research shows that: The train speed has a great influence on vibration response, the train speed more higher, the ground vibration response on the same location will be more greater; The attenuation characteristics of acceleration, velocity and displacement along the distance are substantially uniform, it performance for the exponential attenuation law; If not considering the precision instrument’s own isolation capability, two freight train with the speed of 120km/h and 100km/h meet near factory plant, the prediction values of acceleration, displacement and Y direction speed less than the vibration limit values, but the prediction values of the X and Z direction speed beyond the instrument’s vibration limit values; After considering the precision instrument’s own isolation capability, vibration prediction values can all meet the instrument’s vibration limit values.

Key words

railway environmental vibration / finite element method / precision instruments / vibration response / attenuation law

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Zhang Peng-fei;Lei Xiao-yan;Gao Liang;Liu Qing-jie;Jiang Chong-da . Analysis on the effect of railway environment vibration on precision instrument inside the plant[J]. Journal of Vibration and Shock, 2013, 32(16): 187-192