摘要
深水海管终端设备管线承受的流体内压一般较大,同时外部受到海洋环境载荷的作用,管线较短,安装有阀门和连接设备,并与海管终端设备的钢结构进行连接。针对深水海管终端设备管线这些特点,结合工程案例对其进行了应力计算,采用ABAQUS软件建立了管线和钢结构的有限元模型,考察了与连接设备接口处不同的约束条件对计算结果的影响,同时按照设计规范施加各个工况下的载荷对管线进行了校核。分析结果表明,管线与连接设备接口处,钢结构和管线之间采用耦合约束得到的应力计算结果较为保守,当管线和结构刚度相当时,考虑接口处的结构刚度十分必要;海管终端设备管线直管和弯管的UC值均小于1,满足DNV规范要求。
Pipes in terminal facilities of deep-sea pipelines are often subject to significant internal pressures induced by fluids. Externally, these pipes are subject to marine environmental loads. Such pipes are generally short,with valves and connection devices installed,and connected with steel structures in terminal facilities. In accordance with these specific features of pipes,the pipe stresses were calculated for specific cases. Finite-element models for pipes and steel structures were constructed by using ABAQUS to determine impacts of different constraint conditions around interfaces of connection devices on calculation results. In addition,loads under different working conditions were applied in accordance with design specifications to calibrate such pipes. Relevant results show that the stress calculation results obtained by using coupling constraint conditions around the joints between the pipes and connection devices and between the steel structure and the pipes are quite conservative. If the pipe has equivalent structural rigidity,it is absolutely necessary to review the structural rigidity around joints. With UC values of both straight and bend pipes in terminal facilities lower than 1,the pipes meet DNV specifications.
出处
《石油机械》
2015年第3期64-67,共4页
China Petroleum Machinery
基金
国家工信部海洋工程装备项目"水下生产系统设计及关键设备研发(一期)"(E-0813C003)
关键词
海管终端设备
管线
钢结构
连接设备
应力计算
载荷工况
DNV规范
deep-sea pipeline terminal facility
pipe
steel structure
connection device
stress calculation
loading condition
DNV specifications
作者简介
魏会东，高级工程师，生于1981年，2007年毕业于上海交通大学机械与动力工程学院，获硕士学位，现从事海洋工程及水下生产系统装备设计和研发工作。地址：（300451）天津市塘沽区。E—mail：hdwei88@163．com。
