深海极端环境下复合材料立管粘结接头的强度及断裂研究

项目名称： 深海极端环境下复合材料立管粘结接头的强度及断裂研究

项目编号： No.11302264

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 张玉

作者单位： 中国石油大学（北京）

项目金额： 26万元

中文摘要： 随着深水油气资源的开发, 其开发技术和装备也在不断面临新的挑战。复合材料立管在深海中突出的优势，其应用已经成为了一种发展趋势，而立管中的接头是管线系统最容易发生破坏的地方，粘结接头由于质量轻，强度大的优势逐渐取代了传统的接头，如何保障立管粘结接头的强度是目前急需解决的课题之一。本项目将建立有效的深海极端环境载荷和工作载荷联合作用下的复合立管粘结接头力学特性分析模型，通过理论分析、数值模拟和实验相结合的方法研究复合材料立管粘结接头在高温、内压、波浪、 海流等海洋极端环境载荷和工作载荷联合作用下的强度和断裂问题，对不含初始缺陷以及含有初始缺陷的粘结接头建立强度评价标准和断裂准则。

中文关键词： 复合材料立管；粘结接头；界面应力；裂纹；强度

英文摘要： With the developing of deep water oil and gas resources, technologies and equipments are facing new challenges. The application of composite risers has become a trend as its advantages. The joint in the pipeline system is the most prone to break, and now the adhesively bonded joint is gradually replacing the traditional joints as its light weight and high strength. How to guarantee the strength of adhesively bonded joint in the composite risers becomes an urgent project. In this project, the mechanical analysis model will be established for the adhesively bonded joint of the composite riser in the extreme marine environment.The strength and fracture problem of the adhesively bonded joint will be studied under the combined envirionment and working loading conditions, such as high-temperature, internal pressure, wave, current, and the strength evaluation standard and fracutre critirion will be established by the methods of theoretical analysis, numerical simulation and experiments.

英文关键词： composite risers；adhesive joint；interface stress；crack；intensity