流冰碰撞作用下钢管桩动力行为研究  

Research on the dynamic behaviour of steel pipe piles under the action of drift ice collision

作　　者：周国涛 张成明 张景全 尉帅帅 孟令顺 聂瑞锋 杨云凯 ZHOU Guotao;ZHANG Chengming;ZHANG Jingquan;WEI Shuaishuai;MENG Lingshun;NIE Ruifeng;YANG Yunkai(Shandong Highway and Bridge Construction Group Co.,Ltd.,Jinan 250000,China;Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东省公路桥梁建设集团有限公司,济南250000 [2]山东科技大学土木工程与建筑学院,山东青岛266590

出　　处：《黑龙江工程学院学报》2025年第2期25-30,共6页Journal of Heilongjiang Institute of Technology

基　　金：山东省自然科学基金项目(ZR2020ME241)。

摘　　要：流冰碰撞钢管桩时会产生较大的撞击力,严重影响海洋平台的安全性。借助于ANSYS/LS-DYNA有限元软件平台,研究流冰碰撞作用下钢管桩的动力响应问题,分析冰厚、冰速以及钢管桩倾斜角度对钢管桩动力响应的影响,同时探讨不同桩型组合结构的动力响应规律。结果表明:流冰碰撞钢管桩时,随着冰厚、冰速的增大,钢管桩动力响应也逐渐增强;而随钢管桩倾斜角度的增大,钢管桩动力响应减弱;钢管桩组合结构的动力响应由大到小为:双直桩结构>双斜桩结构>斜-直-斜三桩联合结构,三桩联合结构抵抗流冰碰撞作用更为明显,斜桩较直桩更有利于抵抗流冰的碰撞作用。The collision of flowing ice will produce a large impact force on steel pipe piles,which seriously affects the safety of offshore platforms.With the help of ANSYS/LS-DYNA finite element software platform,the dynamic response of steel pipe piles under the action of drift ice collision was researched.The effects of ice thickness,ice velocity and steel pipe pile tilt angle on the dynamic response of steel pipe piles were analysed,and the dynamic response law of different pile combination structures was also explored.The results show that the dynamic response of the steel pipe pile is enhanced with the increase of ice thickness and ice speed when the drift ice collides with the steel pipe pile,while the dynamic response of the steel pipe pile is weakened with the increase of the tilting angle of the steel pipe pile;the dynamic response of the steel pipe pile combination structure is from large to small:double straight pile structure>double inclined pile structure>inclined-straight-inclined three piles combined structure,and inclined-straight-inclined three piles combined structure has more obvious resistance to ice collision.The inclined pile is better than the straight pile to resist the collision of drift ice.

关 键 词：流冰 海洋牧场 钢管桩 动力响应 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]