城市立交的发展在缓解交通拥堵的同时,也增多了汽车撞击桥墩的事故。该文介绍了欧、美和中国桥梁设计规范的相关内容,比较其异同点。并对汽车撞击桥墩过程进行了仿真分析。仿真结果表明:桥墩在中型货车低速碰撞下受到的撞击力基本能满足规范要求,但速度在较高水平时,结果与规范存在一定差距。 The development of urban interchange in alleviating traffic congestion, but also increased the car crash pier. This article introduces the relevant contents of the bridge design codes of Europe, the United States and China, and compares the similarities and differences. The simulation of the process of car crash pier is carried out. The simulation results show that the impact force of bridge pier under the low-speed collision of medium-sized trucks can basically meet the requirements of the code, but there is a certain gap between the results and the specifications at high speed.