不同海况下浮式石油平台支墩动态力学分析与结构优化  

Dynamic mechanical analysis and structural optimization of supporting piers of floating production storage and offloading under different sea states

作　　者：黄志强[1,2] 黄山 李琴[1,2] 陈言 黄琴 唐崇尧 HUANG Zhiqiang;HUANG Shan;LI Qin;CHEN Yan;HUANG Qin;TANG Chongyao(Key Laboratory of Oil and Gas Equipment of Ministry of Education,Southwest Petroleum University,Chengdu 610500,China;School of Mechanical and Electrical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学石油天然气装备教育部重点实验室,四川成都610500 [2]西南石油大学,机电工程学院,四川成都610500

出　　处：《海洋湖沼通报》2023年第2期43-54,共12页Transactions of Oceanology and Limnology

基　　金：中国石油天然气集团科学研究与技术开发项目(2016A-10)。

摘　　要：浮式石油平台作为一种海上石油生产基地,在海上服役过程中,受到各种恶劣多变的海况影响,易导致模块支墩结构发生失效破坏,使上部模块存在整体倾覆的风险。因此,本文以我国浮式石油平台作业较多的南海海域为例,开展在不同海况下浮式石油平台模块支墩动态力学分析与试验研究。通过有限元仿真软件建立上部模块三维模型,开展支墩结构动态力学分析,根据仿真云图找到了支墩危险部位,并用六自由度平台模拟多种海况进行模型试验,验证仿真的正确性。在此基础上对模块支墩进行安全校核和结构优化。试验与仿真结果表明:支墩危险部位为筋板、肘板处,通过加厚、倒角可有效减小危险部位的应力集中及最大应力值,文中提出的六自由度平台模拟海况的试验方法可用于单模块模型的动态力学分析,研究结果为浮式石油平台上部模块支墩的力学分析和设计建造提供参考。As an offshore oil production base,floating production storage and offloading is affected by various harsh and varied sea conditions during sea service,which may lead to failure and failure of the module buttress structure,and the upper module has the risk of overall overturning.Therefore,this paper takes the South China Sea area with a lot of floating production storage and offloading as an example to carry out the dynamic mechanical analysis and experimental study of the module piers of floating production storage and offloading under different sea conditions.The three-dimensional model of the upper module was established by finite element simulation,and the dynamic mechanical analysis of the pier structure was carried out.The dangerous parts of the pier were found according to the simulation cloud map,and the model test was carried out by simulating various sea conditions with six degrees of freedom platform to verify the correctness of the simulation.On this basis,the module pier is safely checked and structurally optimized.The test and simulation results show that the dangerous part of the pier is the rib plate and the bracket,and the stress concentration and maximum stress value of the dangerous part can be effectively reduced by thickening and chamfering.The test method of the six-degreeof-freedom platform simulation sea state proposed in the paper It can be used for dynamic mechanical analysis of single-module model.The research results provide reference for the mechanical analysis and design of the upper module pier of floating production storage and offloading.

关 键 词：浮式石油平台模块支墩 动态力学分析 六自由度平台 模型试验 结构优化 

分 类 号：TH122[机械工程—机械设计及理论]