超高车辆碰撞桥梁的有限元损伤分析

基于ABAQUS有限元分析软件,充分考虑钢筋与混凝土的共同受力及混凝土的材料非线性,对超高车辆碰撞桥梁进行仿真模拟.针对不同车速下超高车辆对桥梁的撞击问题,分析车-桥的碰撞机理及撞击对桥梁的损伤情况.分析发现:碰撞速度越大,主梁应力越大,且达到最大应力所需的时间越短；碰撞对主梁的损伤破坏是非常大的,特别是受拉损伤,且损...

Damage Analysis on Collision between Over-High Truck and Bridge Based on FEM

Based on finite element analysis software ABAQUS,the collision between over-high truck and bridge is simulated,which considers the co-bearing of steel and concrete,as well as the material nonlinearity of concrete.According to the collision caused by over-high truck at different speed,the collision mechanism of car-bridge and the damage of bridge due to the collision are researched.Analysis shows that the higher the vehicle speed,the larger the stress of the girder,and the shorter the time needed to amount to the maximum stress;the damage of girder is very large due to the collision,especially the tension damage,and the damage mainly occurs in the first half of the collision.