海洋非粘接管道接头内的粘接问题研究

发布时间：2018-01-10 23:20

本文关键词：海洋非粘接管道接头内的粘接问题研究　出处：《大连理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：接头是连接柔性管道与上端浮体的重要装备,它与柔性管道的连接性能好坏直接决定接头的承载能力。接头与管道连接实质上是抗拉铠装钢丝与环氧树脂之间的粘接锚固。本文首先简单介绍非粘接柔性管道及接头结构,并对现有粘接机理研究、粘接力学及接头内粘接问题的国内外研究现状进行充分的调研与分析,基于此制定一套研究接头粘接问题的方法,包括粘接层材料属性拟合、粘接数值模拟、拉拔实验以及折弯实验验证数值模型的可行性。通过分析单搭接剪切模型的粘接层材料参数,得出剪切极限强度是影响粘接性能最大的参数；对厚胶体拉拔模型的搭接长度及胶体厚度进行分析,发现：相比搭接长度,胶体的厚度对粘接性能的影响并不大；根据单根折弯钢丝拉拔数值模型及实验结果进行对比,可以把接头拉拔破坏形式分为三个阶段：钢丝的屈服、钢丝与环氧树脂之间的粘接破坏及扩展、折弯钢丝处应力集中直至断裂,其中直钢丝段长度、粘接层极限剪切应力以及钢丝的屈服强度对折弯拉拔模型的抗拉拔能力影响很大,折弯钢丝段前端折弯角度及长度对接头的抗疲劳性能影响很大。本文的研究工作依托国家高技术研究发展计划(863计划)—深水油气勘探开发关键技术与装备研究项目“柔性海底管道关键技术研究”(2012AA09A212)课题开展。
[Abstract]:The joint is an important equipment to connect the flexible pipe with the upper floating body. The connection performance between the joint and the flexible pipe directly determines the bearing capacity of the joint. The connection between the joint and the pipeline is essentially the bonding anchor between the tensile armored steel wire and epoxy resin. This paper first briefly introduces the non-adhesive flexible pipe. And joint structure. And the existing research on bonding mechanism, bonding mechanics and joint bonding problems at home and abroad are fully investigated and analyzed, based on which a set of research methods for joint bonding problems are developed. The feasibility of the numerical model is verified by numerical simulation, drawing experiment and bending experiment. The material parameters of the single lap shear model are analyzed. It is concluded that the ultimate shear strength is the most important parameter affecting the bonding performance. The lapping length and colloid thickness of thick colloid drawing model are analyzed. It is found that the thickness of colloid has little effect on the adhesion performance compared with the lap length. According to the numerical model of single bending steel wire drawing and the experimental results, the joint drawing failure can be divided into three stages: the yield of steel wire, the bond failure and expansion between steel wire and epoxy resin. The stress concentration in the bending steel wire is up to fracture, in which the length of straight steel wire, the ultimate shear stress of bonding layer and the yield strength of steel wire have great influence on the drawing resistance of the bending drawing model. The bending angle and length of the front end of the bending steel wire have great influence on the fatigue resistance of the joints. -the key technology and equipment research project of deep water oil and gas exploration and development, "Research on key Technologies of flexible Submarine Pipeline" (2012AA09A212).
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE973.92

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