某公路桥涵挡土翼墙裂缝成因分析及加固设计

STRENGTHENING DESIGN AND CRACK ANALYSIS FOR WING WALLS OF WAGON BRIDGE

某公路桥涵挡土翼墙因在雨季土体受雨水作用膨胀，侧向土压力增大引起翼墙混凝土强度不足而拉裂。通过使用ANSYS对翼墙进行非线性分析，得出了翼墙的应力分布状况，为加固设计采用设置隔板和倒角的方法加固提供依据。改造后翼墙的承载能力得到提高同时也降低了侧向土压力，并取得了很好的加固效果。

Because of increase of lateral earth pressure in rainy season, the wing walls of wagon bridge were cracked, a nonlinear model is set up based on the ANSYS, through which the distribution of stress is achieved ,and it also provides reason for adoption of partition slab and berel edge. after reconstruction, we find that it not only decreases lateral earth pressure but also improves the load-carrying capacity of wing walls, in addition, it shows that a good strengthening effect has been achieved in the construction.