压弯联合荷载下漂浮软管的极限压溃特性  

Bending Wrinkle Behavior of the Floating Hose under Internal Pressure and Bending Moment Loads

作　　者：魏代锋 安晨[1] 张毅 高强 李忠利 WEI Dai-feng;AN Chen;ZHANG Yi;GAO Qiang;LI Zhong-li(College of Safety and Ocean Engineering,China University of Petroleum,Beijing 102249,China;Chinese Academy of Geological Sciences,Beijing 100037,China;College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China;Heibei Jingxian Zebang Rubber Technology,Co.,Ltd.,Hengshui 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]中国地质科学院,北京100037 [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,衡水053000

出　　处：《科学技术与工程》2023年第19期8171-8178,共8页Science Technology and Engineering

基　　金：国家重点研发计划(2016YFC0303704);国家自然科学基金(51879271);中国石油大学(北京)校级基金(ZX20200136)。

摘　　要：作为海上输油系统重要组成部分的漂浮软管和水下软管是浮筒和浮式生产储油船(floating production storage and offloading,FPSO)以及浮筒和水下管汇之间的油气输送通道,漂浮软管等在风浪流等极端荷载作用下可能发生极限压溃损毁。以某型漂浮软管为研究对象,利用Abaqus有限元软件,结合rebar单元和Emended嵌入技术建立软管有限元数值模型,研究软管在内压和弯矩作用下的折弯压溃特性,并通过软管弯曲试验验证了该数值分析方法的正确性。计算结果表明:螺旋钢筋失稳是折弯压溃的主要原因,螺旋钢筋外侧的外帘线层在压溃区折弯处帘线拉力过大导致帘线破断。软管的内压荷载及软管的螺距与帘线的缠绕角度对极限压溃都有重要影响。该研究可为输油软管结构抗压溃设计和损伤诊断提供技术支持。As an important part of the offshore oil transportation system,the floating hose and submarine hose is the oil and gas transportation channel between the buoy and the floating production storage and offloading(FPSO),as well as the buoy and the subsea manifold.Under extreme loads such as wind,waves,and currents,the floating hose may be crushed and damaged on the sea.Based on the rebar element and the embedded element technique in Abaqus software,a finite element model was created to investigate the crushing behavior of the floating hose under the internal pressure and the bending moment.Compared with the bending test of the hose,the numerical analysis method for the hose was verified.The result shows that the bending instability of the helix wire of the hose is the main reason of the bending wrinkle behavior of the hose,and the outer layer cord is prone to breakage during the bending and crushing process.The internal pressure load and the structural design parameters of the hose have a significant influence on the bending wrinkle.The research can provide technical support for the compressive collapse design and damage identification in hose application.

关 键 词：复合软管 螺旋钢筋层 极限压溃 缠绕角度 

分 类 号：TE924[石油与天然气工程—石油机械设备]