冲击荷载作用下埋地管道基于应变的力学分析
Mechanical Analysis on Strain Based Design of Buried Pipeline Subject to Impact Load
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- DOI:
- 作者:
- 王洪波1, 张学增2, 王鹏1, 王海东1, 李力荣1
WANG Hong-bo1
- 作者单位:
- 1 中国石油天然气管道工程有限公司,河北廊坊 065000,
2 中国石油天然气管道局 河北廊坊 065000
China Petroleum Pipeline Engineering Corporation, Langfang 065000, China
- 关键词:
- 埋地管道;应变设计;冲击荷载;力学分析
buried pipeline;strain based design;impact load;mechanical analysis
- 摘要:
- 随着管道的设计压力、钢级和口径的大幅度提高以及敷设环境向恶劣地区扩展,传统的应力设计已经不能完全满足工程需要,为此介绍了应变设计的理念,并且与传统的应力设计进行了比较。研究了冲击荷载的作用机理和对管道的危害,提出了冲击荷载作用下的最大应变计算方法,给出了临界环向屈曲应力,编制了表面荷载作用下埋地管道的校核程序,通过算例介绍了使用该程序计算管道受力情况的方法。
With the great increases of design pressure, steel grade and diameter of pipelines as well asthe pipeline laying extended to worse environment, the traditional stress based design method is no longer to satisfy engineering needs completely. Therefore the strain based design method is introduced and comparedwith the stress based design method in this paper. The action mechanism and damage of impact load on buriedpipeline are investigated. The calculation method of maximum strain under the impact load is put forward andthe critical ring buckling stress is obtained. The check program for pipeline subject to the surface load is tom-piled and its application method to calculate pipeline forces is presented with calculation examples.2009,5(5): 1-4 收稿日期：2009-2-13分类号：U171作者简介：土洪波(1977-)男，吉林梨树人，工程师，大连理工大学力学系硕士研究生毕业，现在主要从事国内外管道设计、管道水工保护和管道应力分析方面的研究工作。参考文献：
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2 GB 50253-2003.输油管道工程设计规范[S].2003.
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5 刘学杰,孙绍平.地下管道穿越断层的设计方法[J].特种结构,2005,(02):81-85.doi:10.3969/j.issn.1001-3598.2005.02.028.