Dynamic response analysis of cutting rock slope under high speed train vibration load.

In order to solve the dynamic response problem of rock slope induced by the vibration load of high speed train. Based on cutting rock slope engineering case of Qin-Shen Special Railway, the dynamic finite element model of track-subgrade-cutting slope system is established. By using dynamic analysis program, dynamic response of cutting rock slope caused by train vibration loads under different train-speed is caculated, and the distribution of dynamic response under vibration load of high speed train is obtained. The results indicate that dynamic response is happened within 5 m around train vibration source, .and the maximum is happened at the slope bottom. With the increase train-speed off, the dynamic response amplification at the slope bottom is maximum, and the amplification of vibration acceleration in all dynamic responses is maximum. [ABSTRACT FROM AUTHOR]