Simulated study on train vibration load of subgrade testing model of high-speed railway

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (6) : 43-46.

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Simulated study on train vibration load of subgrade testing model of high-speed railway

WANG Qiyun,ZHANG Jiasheng,MENG Fei,CHEN Xiaobin,CHEN Junhua

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Abstract

Device to simulate train vibration load was presented aiming at track-subgrade full size testing model of high-speed railway, it included reaction frame, actuator and loading distributing beam.3-D finite element model of the track-subgrade was establisbed based on the testing model by considering the condition that the speed of CRH380 train moving on CRTSⅡ slab ballastless track was 350km per hour and wheel load was 85kN.Vertical dynamic stress and dynamic displacement produced by actuator load and train moving load were compared and effect of actuator of simulating vibration load by train was validated well. Load-time curve of fastener exported was gained by FEM while the adjacent bogie of different bogie was passing. Then in view of requirement of MTS servo load machine and characteristic of distributing system for transferring load, ultimate load-time curve importing to actuator was received by superposition and fourier transform.

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High-speed railway / Model testing / Dynamical response / Loading

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WANG Qiyun;ZHANG Jiasheng;MENG Fei;CHEN Xiaobin;CHEN Junhua. Simulated study on train vibration load of subgrade testing model of high-speed railway[J]. Journal of Vibration and Shock, 2013, 32(6): 43-46