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桥位处水位涨落幅度较大时，考虑桥梁和航船的安全，本文提出桥墩浮式柔性消能防撞护套的设计方案，并用能量法推导出多种碰撞情况的简易计算公式，用以确定柔性护套的基本设计参数．
Considering the safety of bridges and sailing ships when the water level fluctuates greatly at the bridge site, this paper presents a design scheme of the bridge flexible floating energy-dissipating crash bumper, and deduces a simple formula to calculate various kinds of collision situations by energy law. Determine the basic design parameters of the flexible sheath.