Study on the Distributed Rule of the Railway's Subgrade's Dynamic Stress Response

Based on the imitating of railway track irregularity and the vibration load of high-speed railroad train,the railway subgrade's dynamic responses (including stress,displacement,acceleration) distributed rule under the high speed train load is analyzed,the road cross section's distributing diagram of the railway's subgrade's dynamic stress responses is gotten,the most disadvantageous position of the railway's subgrade's dynamic stress response is found out.The testing dates of the Qin-Shen special line for passenger transport is contrasted with the accounting dates,both of the regulations are consistent.