桥梁防撞钢套箱设计与连接方式比较研究——船舶正面碰撞下的有限元分析  

Mode of Bridge Anti-collision Steel Box——Finite Element Analysis of Ship Frontal Collision

作　　者：张繁森 廖军[2] ZHANG Fansen;LIAO Jun(Research Institute of Highway Ministry of Transport,Beijing 100088,China;Beijing Gongke Bridge Technology Co.Ltd.,Beijing 100080,China)

机构地区：[1]交通运输部公路科学研究院,北京100088 [2]北京公科固桥技术有限公司,北京100080

出　　处：《石家庄铁道大学学报（自然科学版）》2024年第2期22-27,共6页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

摘　　要：建立了嘉绍大桥防撞钢套箱有限元模型,改变其钢板厚度,分析钢板厚度变化对钢套箱抗撞性能的影响;改变钢套箱与桥墩之间的连接方式,模拟不同连接方式对钢套箱抗撞性能的影响;改变套箱厚度,分析其对钢套箱抗撞性能的影响。结果表明,缓冲距离足够的情况下,钢板厚度减小,船舶撞击力峰值会减小;在相同条件下,密贴这种连接方式的抗撞性能弱于有浮动或者固定连接件连接这2种方式;套箱厚度变化对抗撞性能的影响不大,但是采用密贴连接时,需注意其缓冲距离是否足够。The finite element model of the steel box of Jiashao Bridge was established,and the influence of the steel plate thickness on the collision resistance of the steel box was analyzed by changing the thickness of the steel plate.The influence of different connection modes on the collision resistance was simulated by changing the connection mode between steel case and bridge pier.The thickness of steel box was changed for analyzing its influence on collision resistance.The results show that when the buffering distance is enough,the peak value of ship impact force will decrease with the decrease of the thickness of steel plate;Under the same condition,the collision resistance of the close-fit connection is weaker than that of the floating or fixed connection;The change of the thickness of the anti-collision steel box has little influence on the collision resistance,but when the close-fit connection is used,attention should be paid to the adequacy of its buffering distance.

关 键 词：防撞钢套箱 抗撞性能 钢板厚度 连接方式 套箱厚度 

分 类 号：U443.26[建筑科学—桥梁与隧道工程]