基于旧路破损的加铺层参数敏感性分析

For reconstruction and extension projects, design of overlay for reinforcement section is one of the important contents. Based on the reconstruction and extension project of beijing-tianjing-tangshan expressway, considering the damage condition of old road, using the large-scale finite element analysis software ANSYS 10.0 and assuming the contact condition as continuity，pavement parameter sensitivity analysis was done for overlay structure with crack on. The results showed that when the overlay model with the old road cracked was used, in the condition of balance between technology and economy, increasing the thickness of overlay was good for the structure stress.