A full-scale model of the high-speed railway subgrade was established by using finite element analy-sis software to study the influence of pile network structure on the seismic performance of the subgrade.The influence of four factors,pile length,pile diameter,pile spacing and cushion thickness on the seismic performance of high-speed railway subgrade was investigated.Through the time domain analysis of the subgrade slope and the evaluation of the damping rate,the following conclusions are obtained:increasing the pile length,pile diameter and cushion thickness have obvious effects on improving the seismic per-formance;An increase in pile spacing leads to a decrease in damping effect.In turn,it provides strong sup-port for the seismic design of high-speed railway subgrade.
维普
万方数据