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输气管道干线强度设计原则
Strength design principles for main gas pipelines
大口径、高压力天然气管道壁厚的选取,不仅会影响管道的安全运行,而且与管道工程建设投资直接相关。通过对GB 50251-2015、ASME B31.8-2007、ГОСТР 55989-2014、ISO13623-2009、CSA Z662-11-2011等国内外常用输气管道干线直管段强度设计标准的相关内容进行对比,分析了各标准的设计理念、适用范围及技术优势,特别是针对管线钢随着等级提高而呈现屈强比增大的特点,比较分析了各标准对于管道壁厚设计结果的差异。随着大口径、高压力管道技术的发展,基于材料抗拉极限壁厚设计原则的俄罗斯标准更能反映出高钢级管线钢材料的特性变化。(图2,表4,参14)
Selection of wall thickness of large-diameter and high-pressure gas pipelines not only affects the safety of pipelines, but also is related directly to the investment of pipeline engineering construction. In this paper, the commonly used strength design standards on the straight sections of main gas pipelines were reviewed and compared, including GB 50251-2015, ASME B31.8-2007, ГОСТР 55989-2014, ISO13623-2009 and CSA Z662-11-2011. Each standard was deeply analyzed from the aspects of design concept, application scope and technical advantages. Especially according to the characteristics that the yield strength ratio increases with the improvement of pipeline steel grades, the difference of different design standards on wall thickness were compared and analyzed. With the technological development of large-diameter and high-pressure gas pipelines, the pipeline materials of higher steel grade can be better characterized by the Russian standard which is established on the basis of wall thickness design principle of the material tensile strength. (2 Figures, 4 Tables, 14 References)
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收稿日期:2015-09-06;改回日期:2016-09-18。
作者简介:闫锋,男,高级工程师,1976年生,2009年博士毕业于中国石油大学(北京)油气储运工程专业,现主要从事油气储运工艺技术研究。地址:河北省廊坊市金光道51号,065000。电话:0316-2076109,Email:yanfeng77011@163.com