围绕福州乌龙江大桥,通过船-桥碰撞数值模拟,重点研究了船—桥碰撞的接触时间,拟合出接触时间的经验公式,根据冲量定理给出船舶撞击力的推荐值,并与各国规范进行了对比分析;研制了新型纤维增强复合材料防撞系统,实现了相关桥梁防船撞工程应用,结果表明:复合材料防撞系统具有大变形能力与良好的缓冲吸能效果,从而有效保护桥墩结构安全,减轻船舶受损程度,具较高的技术经济优势。
This Wu Long Jiang Bridge is on focus and the ship-bridge collision force is investigated by numerical simulation analysis. The contact time of the ship-bridge collision is emphasized on and the experience formula of the contact time is fitted out. According to the theorem of impulse,recommended value of ship impact force are presented and compared with different empirical formulas. The innovative fiber-reinforced composite anti-collision system is researched and designed. Then a bridge engineering anti-collision application example is introduced. The results indicate that self-floating composite systems with a large capacity of anti-ship collision deformation and good effect of energy absorption cushioning is designed in this paper. The composite anti-collision system can effectively reduce the impact force to the pier and relieve damaged degree of ship which possesses higher superiority on technical economy.