Based on ABAQUS finite element program,through numerical simulation method,it analyzes the vehicle with different qualities impacting the flyover process and acting mechanism.Results show that：major beam and branch support stress and displacement are diff%基于ABAQUS有限元程序,通过数值模拟的方法,对不同质量车辆撞击桥梁的过程和作用机理进行了分析,结论表明：在同一车速下,车辆质量不同,撞击下主梁和支座所产生的应力和位移不同,桥梁结构的破坏形式也不同。
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