基于固有应变的海洋平台典型结构焊接变形预测  

Welding Deformation Prediction of Typical Offshore Platform Structures Based on Inherent Strain

作　　者：杨心怡[1] 周宏[1] 王蕾 刘建成 张宏飞 YANG Xinyi;ZHOU Hong;WANG Lei;LIU Jiancheng;ZHANG Hongfei(School of Ocean and Civil Engineering,Jiangsu University of Science and Technology,Jiangsu Zhenjiang 212003,China;China Merchants(Jiangsu)Heavy Industry Co.,Ltd.,Jiangsu Nantong,226100,China;Jiangsu New Yangzi Shipbuilding Ltd.,Jiangsu Jingjiang 214532,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]招商局(江苏)重工有限公司,江苏南通226100 [3]江苏新扬子造船有限公司,江苏靖江214532

出　　处：《船舶工程》2019年第11期120-124,共5页Ship Engineering

基　　金：工信部高技术船舶科研项目（工信部装函（2017）614号）;江苏省研究生科研与实践创新计划项目（KYCX18_2342）

摘　　要：应用热弹塑性有限元分析和弹性有限元法,对半潜式起重拆解平台中连接平台和浮体的典型结构进行焊接变形的预测。通过对焊接接头的预测分析,得到其固有应变,再将计算得到的固有变形以载荷的形式加载到整个结构中,得到整个结构的焊接变形。通过对3种焊接顺序的比较,得到焊接变形最小的方案。在此基础上,考虑开口对结构焊接变形的影响。研究结果将对半潜式起重拆解平台特殊结构的焊接工艺优化提供理论支撑和数据支持。Using the thermo-elastic-plastic finite element analysis and elastic finite element method, the welding deformation of the connecting platform and floating body on the semi-submersible lifting platform is predicted. Through the prediction and analysis of welded joints, the inherent strain is obtained, and then the calculated inherent deformation is loaded into the whole structure in the form of load, and the welding deformation of the whole structure is obtained. By comparing three welding sequences, the scheme of minimum welding deformation is obtained. Based on this, the influence of the opening on the welding deformation of the structure is considered. The research results will provide theoretical support and data support for the optimization of the welding process of the special structure of the semi-submersible lifting and disassembly platform.

关 键 词：海洋平台 典型结构 固有应变 焊接变形 焊接顺序 

分 类 号：TG404[金属学及工艺—焊接]