【作者】 李骏嵘；

【导师】 邹道勤； 金伟良；

【作者基本信息】 浙江大学 ， 结构工程， 2004， 硕士

【摘要】 海底管道是海上油气运输中最主要的，也是最快捷、经济、可靠的方式。自1954年在美国的墨西哥湾铺设的第一条海底管道以来，在世界各近海海域成功地铺设了无数条各种类型、各种管径的海底管道。将海底管道作为海洋油气的输送方式已越来越普遍。 一直以来，国内大多数海底管道都是根据DnV1981(旧规范)规范进行设计，并采用OFFPIPE(1996)软件进行管道施工分析。随着海底管道建设事业的发展，海底管道的设计规范、内外检测技术、施工技术和与海底管道设计施工相关的各类分析软件也相应得到了发展。国内的海底管线将逐步采用极限状态设计标准DnV OS F101规范(新规范)取代旧规范进行设计。 本文总结了国内外在海底管道设计、施工、安装、检测等方面的最新研究状况；归纳了海底管道设计、施工中所应用的基本理论以及海底管道强度设计的方法和步骤；分析了DnV OS F101中管道强度设计的有关规定，并与DnV1981规范作对比分析；并根据新规范，采用基于可靠度的分析方法，对按旧规范设计的服役多年的旧管线的安全性进行了评估。 《海底管道铺设分析系统SPLAS》(2000版)是浙江大学结构工程研究所在2000年根据DnV1981规范开发的具有自主知识产权的管线施工分析程序，随着新规范的发布，需对该程序进行修改和完善。本文在原程序基础上，增加了波浪理论和船舶运动理论计算模块，使程序能根据要求选择合适的波浪理论进行计算，并输出船舶在波浪中的运动方程。此外，通过读取OFFPIPE软件计算结果数据文件，程序能对管线铺设时的内力和应力应变，按新版规范进行校核，并输出校核结果。使OFFPIPE(1996)软件能适应新规范的要求。更多还原

【Abstract】 Submarine pipeline is one of the most important, quick, economical and reliable manner for offshore oil and gas transportation, which is widely used nowadays. Since the first submarine pipeline in the Gulf of Mexico was installed in 1954, a great number of submarine pipelines with various calibers and types have been successfully installed in offshore all over the world. Using submarine pipeline as a way to transport submarine oil and gas has been becoming more and more common.So far, most of the submarine pipelines in China have been designed according to the Code of DnV1981, and the stress and strain of pipes during installation have been calculated by the OFFPIPE (1996) software. As the development of submarine pipeline’s design code, detection technique inside-outside, installation techniques and all kinds of the corresponding analysis software, the limit-state design standard-DnV OS F101 Code will be gradually used in domestic submarine pipeline designs.Latest researches on submarine pipeline design, installation and detection as well as the basic theory used in the submarine pipeline design and construction are summarized in this paper. The strength design approach of pipeline in DnV OS F101 is analyzed, and the method and process for submarine pipeline strength design are summarized in comparison with DnV1981. Based on the new design code, an evaluation of an old pipeline, which was designed under the DnV1981 and has been used for many years, is carried out by reliability theory.<<Submarine Pipeline Layout Analysis System SPLAS>> (Version 2000) is an object-oriented software for analyzing the stress and strain of pipelines during installation. The software has independent intellectual property by Structural Engineering Institute of Zhejiang University. With the introduction of new design code, SPLAS 2000 needs to be upgraded. A new calculation function for wave theory and laybarge motion theory based on original program is appended to it. In the upgraded SPLAS, user can choose a suitable wave theory to calculate wave forces subjected to submarine pipeline and output the equation of laybarge motion in waves. By reading the calculation result files of OFFPIPE and checking the internal force and stress-strain of pipeline during installation according to DnV OS F101, the program makes OFFPIPE (1996) suitable for the new code.更多还原