附加消能单位的浮式防船撞设施研究  

Research on Floating Anti-Ship Collision Facilities with Additional Energy Dissipation Units

作　　者：聂利芳[1] NIE Lifang(China Railway Siyuan Survey and Design Group Co.Ltd.,Wuhan Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《铁道建筑技术》2024年第11期114-117,145,共5页Railway Construction Technology

基　　金：中铁第四勘察设计院集团有限公司科研项目(2021C09)。

摘　　要：目前桥梁工程中采用的桥墩防船撞设施以浮式套箱为主要结构形式,为了增加防撞套箱的消能效果,引入建筑和桥梁减隔震领域广泛采用的金属钢阻尼,利用钢阻尼塑性变形耗能的特点设计完成消能单元,安装于防撞箱体与内侧橡胶护舷之间。采用有限元与碰撞试验方法验证消能单元的可靠性,对防撞箱体、附加消能单元的防撞箱体两种工况进行对比分析,试验与仿真分析结果吻合较好,增加消能单元后,撞击力削减大于30%。消能单元结构简单,结构本身无螺栓及焊接连接,通过卡榫结构连接成整体,生产加工简单,安全可靠且成本低,可增加防撞套箱耗能能力。At present,the bridge pier anti-ship collision facilities used in bridge engineering are mainly in the form of floating boxed cofferdam.In order to increase the energy dissipation effect of the anti-collision boxed cofferdam,metal steel damping widely used in the field of building and bridge seismic isolation is introduced.The energy dissipation unit is designed using the characteristics of steel damping plastic deformation energy dissipation,and installed between the anti-collision boxed cofferdam and the inner rubber fender.The reliability of the energy dissipation unit was verified using finite element and collision test methods.A comparative analysis was conducted between the collision avoidance box and the collision avoidance box with additional energy dissipation units.The experimental and simulation results were in good agreement.After adding energy dissipation units,the impact force was reduced by more than 30%.The structure of the energy dissipation unit is simple,without bolts or welding connections.It is connected as a whole through a mortise and tenon structure,with simple production and processing,safety and reliability,and low cost.It can increase the energy consumption capacity of the anti-collision boxed cofferdam.

关 键 词：船撞 消能单元 防撞套箱 碰撞试验 撞击力 削减 

分 类 号：U443.26[建筑科学—桥梁与隧道工程] U447[交通运输工程—道路与铁道工程]