漂浮软管接头破损及粘结面脱粘研究  

Study on damage mechanism and debonding of adhesive surface of floating hose joint

作　　者：魏代锋 安晨[1] 张哲[1] 徐泽金 高强 李有安 WEI Daifeng;AN Chen;ZHANG Zhe;XU Zejin;GAO Qiang;LI Youan(College of Safety and Ocean Engineering,China University of Petroleum,Beijing,Beijing 102249,China;Kunming Shipborne Equipment Research and Test Center,Kunming,Yunnan 650051,China;College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China;Heibei Jingxian Zebang Rubber Technology,Co.Ltd.,Hengshui,Hebei 053000,China)

机构地区：[1]中国石油大学(北京)安全与海洋工程学院,北京102249 [2]昆明船舶设备研究试验中心,云南昆明650051 [3]上海海事大学海洋科学与工程学院,上海201306 [4]河北泽邦塑胶科技有限公司,河北衡水053500

出　　处：《中国海上油气》2023年第4期173-180,共8页China Offshore Oil and Gas

基　　金：国家自然科学基金“基于相变传热理论的海洋复合管道保温层材料热物性预测及温度调控机理研究(编号:51879271)”部分研究成果。

摘　　要：漂浮软管接头在复杂海洋环境作用下,可能发生钢筋破断、层间脱粘和法兰脱落等,危及油气输运安全。为研究漂浮软管接头破损及粘结面失效行为,以某DN 300漂浮软管为例,利用Rebar单元、Embedded嵌入技术和粘聚力接触模型,构建了漂浮软管接头三维有限元模型,对软管接头在拉伸荷载作用下的力学特性进行研究,并通过有限元分析结果与试验结果的对比验证了数值模拟方法的可行性,进而采用有限元方法分析了漂浮软管接头破损及粘结失效原因。结果表明:①采用Rebar单元和Embedded嵌入技术建立的三维数值模型分析软管接头破损特性是可行的;②软管接头的损伤、脱粘主要是由接头捆扎钢筋破断造成的;③极限轴向拉伸荷载作用下,软管接头的粘结损伤主要发生在距离法兰端面200~672 mm区域,其中570~672 mm区域大部分位置进入完全损伤。研究成果为漂浮软管接头的极限承载设计和泄漏机理研究提供了参考。Under the complex marine environment,the floating hose joint may experience steel wire breakage,interface debonding,flange falling off and other situations,which endangers the safety of oil and gas transportation.In order to study the joint damage mechanism and adhesive surface debonding,a DN 300 floating hose was investigated.A three-dimensional finite element model of floating hose joint was developed by using the Rebar element,Embedded technology and the cohesive contact model,and then the mechanical behavior of hose joint under tensile load are analyzed.The accuracy of the analysis method of hose joint was proved by comparing the experimental results.Then,the finite element model was used to analyze the damage mechanism and debonding of adhesive surface of floating hose joint.The results show that the three-dimensional numerical model with Rebar element and Embedded technology is validated for analyzing the damage behavior of the hose joint.The main reason for the damage and pull-out phenomenon of the hose joint is the breakage of steel binding wires of the joint.Under the ultimate axial tensile load,the interface debonding occurs within the distance of 200-672 mm from the flange,where the area of 570-672 mm appears the complete bonding damage.The obtained results in the present work can provide a reference for the ultimate strength design and leakage behavior analysis of the floating hose joints.

关 键 词：漂浮软管 接头破损 粘结面脱粘 捆扎钢筋破断 轴向拉伸荷载 

分 类 号：TE973[石油与天然气工程—石油机械设备]