群桩和浮箱结合的防船撞设施碰撞性能分析  

Analysis of Collision Performance of Anti-ship Collision Facilities Combined with Pile Group and Buoyancy Tank

作　　者：白凯 吴曾鹏 许明财[2,3] 潘晋 BAI Kai;WU Zengpeng;XU Mingcai;PAN Jin(Hubei Provincial Communication Planning and Design Institute Co.Ltd.,Wuhan 430051,China;School of Naval Architecture&Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Wuhan Lituo Bridge Protection Technology Co.Ltd.,Wuhan 430040,China;School of Transportation,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]湖北省交通规划设计院股份有限公司,武汉430051 [2]华中科技大学船舶与海洋工程学院,武汉430074 [3]武汉力拓桥科防撞设施有限公司,武汉430040 [4]武汉理工大学交通学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2020年第5期798-802,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(51679100,51609192);中央高校基本科研业务费专项资金项目(2018KFYYXJJ014,2017IVB007);湖南省重点研发计划项目(2016GK2025);湖南省交通科技项目(201616)资助。

摘　　要：文中针对设防桥梁自身抗撞力较弱的情况,设计了桩式防撞结构,避免船舶与桥墩之间的接触以保护桥墩.此外,在群桩外部设置自浮式套箱,减小船舶撞击对群桩的损伤,同时满足水位落差较大的情况.为了提高防撞套箱的耐撞性,内部结构采用X夹层.采用显式有限元法模拟船舶撞击防撞设施的过程,分析了防撞结构的耐撞性、变形,以及桩所受的力.结果表明:所设计的防撞设施具有较好的吸能效果,能达到保护桥梁的目的.In view of the weak anti-collision force of the fortified bridge,a pile-type anti-collision structure was designed to avoid the contact between the ship and the pier to protect the pier.In addition,a self-floating sleeve box was arranged outside the pile group,which can reduce the damage of ship impact to the pile group and meet the situation of large water level drop.In order to improve the crashworthiness of the crash box,X interlayer was adopted in the internal structure.The explicit finite element method was used to simulate the process of collision of ships with anti-collision facilities,and the crashworthiness,deformation of anti-collision structures and the force on piles were analyzed.The results show that the designed anti-collision facilities have good energy absorption effect and can achieve the purpose of protecting bridges.

关 键 词：船舶 桥梁 碰撞 有限元 桩 

分 类 号：U443.26[建筑科学—桥梁与隧道工程]