海洋立管国外规范比较与可靠性分析

发布时间：2018-04-14 05:10

本文选题：立管 + 设计方法　；参考：《浙江工业大学》2015年硕士论文

【摘要】：随着陆地石油资源愈见匮乏,世界各国都逐渐将目光投向了海洋油气开发。作为深海油气田开发系统的重要组成部分,海洋立管以其全新的形式、动态的特性、以及高技术的含量格外引人注目。目前国际上仅有挪威船级社、美国石油协会和美国船级社编制的三本海洋立管规范,而国内尚没有相应的规范,急需开展相关的研究。为了制定我国的基于可靠性分析的立管规范,本文就三本国外立管规范进行了对比和分析,主要工作包括:(1)翻译整理了三本规范中的主要内容,并对其适用范围、极限状态、设计方法、强度校核、整体分析和疲劳分析等内容进行了分析对比。(2)就破裂、环向屈曲(压溃)、屈曲扩散和组合荷载4种失效模式,采用Orcaflex软件对8根实例立管建模计算,对其进行了静强度的分析,并研究了各种参数对各规范设计准则的影响。(3)在统计分析的基础上,采用一次二阶矩法,就8根立管的4种失效模式进行了可靠度计算。(4)确定了立管的目标可靠指标,通过第二水准法确定了DNV规范4种失效模式设计准则的分项安全因子。
[Abstract]:With the scarcity of petroleum resources on land, countries all over the world have gradually turned their attention to offshore oil and gas development.As an important part of deep-sea oil and gas field development system, marine riser is particularly attractive for its new form, dynamic characteristics and high-tech content.At present, there are only three marine standpipe codes compiled by Norwegian Classification Society, American Petroleum Association and American Classification Society, but there are no corresponding regulations in China, so it is urgent to carry out relevant research.In order to formulate the standpipe code based on reliability analysis in our country, this paper compares and analyzes three foreign riser codes. The main work includes the translation and arrangement of the main contents of the three codes, and their application scope and limit state.The design method, strength check, whole analysis and fatigue analysis are analyzed and compared. The failure modes of rupture, buckling (crashing, buckling diffusion and combined load) are analyzed and compared. Eight examples of vertical pipe are modeled and calculated by Orcaflex software.The static strength is analyzed, and the influence of various parameters on the design criteria of each specification is studied. On the basis of statistical analysis, the first-order second-moment method is adopted.The reliability calculation of four failure modes of 8 risers is carried out. The target reliability index of riser is determined, and the sub-safety factors of the four failure mode design criteria of DNV specification are determined by the second leveling method.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE952

【相似文献】