Abstract: The paper expands the damage of the ship-bridge collision and the necessity of protected piers． Then，it classifies and comments all kinds of protection devices of bridge piers，and summers the merits and shortcomings ofthe current protection devices inthe domestic and inter． nationa1．Finally。two design ways on the protection dcvice are given．

Key words: protection device, collision, bridge pier, impact force

摘要： 阐述了船舶撞击桥墩的危害性及桥墩防护的必要性，对桥墩的防撞装置进行了系统的分类和评述，总结目前 国内外桥墩防撞装置的优缺点，并给出了关于防撞装置的两种设计思路．

关键词: 防撞装置, 撞击, 桥墩, 撞击力