超高车辆撞击组合结构桥梁的仿真分析

Computer Simulation for the Impact Between Over-high Truck and Composite Viaduct

基于高性能非线性有限元,对超高车辆-组合结构桥梁碰撞进行了高精度仿真分析,结果表明,组合结构桥梁由于下部的钢板较薄,抗撞击能力差,遭到超高车辆撞击后,易产生较大变形和较大范围的钢板屈服,从而使截面产生扭转,桥梁应力大幅提高;超高车辆撞击对组合结构桥梁的破坏比较严重,在实际应用中需要对组合结构桥梁进行有效地防撞保护。

A high precision simulation for the truck-composite viaduct impact based on high performance nonlinear finite element analysis was presented. The results show that the impact may result in serious damage to the bridges and that protection against impact should be given to composite bridges.