深水跨接管热应力计算及敏感性分析  

Calculation and sensitivity analysis of the thermal stress in a deepwater jumper

作　　者：余建星[1] 刘春辉[1] 何宁[2,3] 周清基[1] 孟庆龙[1] 曾华章 唐必意 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]中国海洋石油总公司 [3]海洋石油工程股份有限公司,天津300451

出　　处：《天津理工大学学报》2015年第1期1-6,共6页Journal of Tianjin University of Technology

基　　金：国家重点基础研究发展计划(2014CB046800);国家科技重大专项(2011ZX05030-006-03);国家自然科学基金(51239008;51309178);海洋工程国家重点实验室(上海交通大学)开放课题目(1201)

摘　　要：深水跨接管在受热及边界约束作用下将产生内部结构应力.采用理论研究及ABAQUS有限元数值模拟方法,对深水跨接管进行受力分析.结果表明,深水跨接管受热时,中跨管受力沿轴向保持一致,截面上则服从正弦/余弦分布,整体表现为受到轴力和弯矩的联合作用,弯管处应力集中现象明显,受力较大.在此基础上对深水跨接管热应力的敏感性进行分析,进而说明,温度差、中跨段长度、中垂段长度均对深水跨接管的热应力值有重要影响.其中,中垂段长度对跨接管中跨管轴力、弯矩影响权重最大.Both theoretical method and finite element numerical simulation were used in this paper to analyze the thermal stress in a jumper, which is a kind of internal stress caused when the structure was heated and the boundaries were constrained. The analysis result indicated that when the jumper was heated, the force in the middle span pipe was constant along the axis direction and the stress in the section changed as the sine/cosine function along the ring direction. The sensitivity analysis was then conducted in the foundation of stress calculation, the result showed that the temperature difference, the middle span pipe length and the middle vertical pipe length all had a significant impact on the thermal stress in a jumper, and the middle vertical pipe length had the maximum impaction on the force and moment among them.

关 键 词：深水跨接管 热应力 数值模拟 敏感性分析 

分 类 号：TE88[石油与天然气工程—油气储运工程]