外设复合材料圈的独立桩柱防船撞系统设计与模拟
Design and Simulation of Anti-Collision System on Independent Pile with External Composite
廖圆圆 1刘煜 2祝露 2方海 2张晋瑞 3韩娟2
作者信息
- 1. 湖南省高速公路建设开发总公司,湖南 长沙 410001
- 2. 南京工业大学 土木工程学院,江苏 南京 211816
- 3. 湖南省交通规划勘察设计院有限公司,湖南 长沙 410008
- 折叠
摘要
为评估船舶撞击桥梁过程中结构的安全性并设计合理有效的防撞系统,准确计算船桥碰撞力具有重要的意义.该文针对湘潭湘江芙蓉大桥的防船撞问题进行研究,基于有限元分析软件Ansys/LS-DYNA计算各典型撞击角度、撞击位置工况下的船撞力,并与经验公式计算结果进行对比,从而确定桥墩结构的设防船撞力.根据桥梁双肢薄壁墩抗撞能力弱的结构特点,设计并实施了复合材料与钢管混凝土独立桩柱相组合的隔离式防船撞系统.对有无防撞设施工况下的桥墩及独立桩柱结构所受的船撞力进行对比,结果表明:设置组合防撞系统后,桥墩在典型不利船撞工况下所受的横桥向和顺桥向撞击力均大幅削减,验证了该防撞系统的有效性.
Abstract
The precise calculation of the ship-bridge collision force is necessary for the assessment of the structural safety of the bridge and the design of an effective anti-collision system.Taking the ship-bridge issue in Furong Bridge in Xiangtan City,this paper compared the collision forces from different angles and in different locations calculated through the finite element software Ansys/LS-DYNA with the results calculated through the empirical formula,thereby determining the fortification collision forces of the bridge piers.Based on the weak anti-collision ability of the bridge double-limb thin-walled pier,the paper designed and implemented a new anti-collision system combined with composite and concrete-filled steel independent piles.The comparison between collision forces on the pier and independent pile with and without anti-collision devices shows that,with the anti-collision system,transverse and longitudinal collision forces under typical unfavorable conditions have a sharp decrease,which verifies the effectiveness of the system.
关键词
船‒桥碰撞/独立桩柱/复合材料/数值模拟/防撞系统Key words
ship-bridge collision/independent pile/composite/numerical simulation/anti-collision system引用本文复制引用
基金项目
国家自然科学基金资助项目(52078248)
江苏省科技计划专项资金(港澳台科技合作计划)项目(BZ2024058)
出版年
2024
国家科技期刊平台
NSTL
万方数据