[1]李又绿,姚安林,赵师平,等.爆炸荷载对埋地输气管道的动力响应和极限载荷分析[J].焊管,2009,32(11):63-69.[doi:1001-3938(2009)11-0063-07]
 LI You-lü,YAO An-lin,ZHAO Shi-ping,et al.Analysis on Dynamic Response and Extreme Loads of Buried Gas Pipeline Under Blast Loading[J].,2009,32(11):63-69.[doi:1001-3938(2009)11-0063-07]
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爆炸荷载对埋地输气管道的动力响应和极限载荷分析
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
32
期数:
2009年第11期
页码:
63-69
栏目:
管道建设
出版日期:
2009-11-28

文章信息/Info

Title:
Analysis on Dynamic Response and Extreme Loads of Buried Gas Pipeline Under Blast Loading
文章编号:
1001-3938(2009)11-0063-07
作者:
李又绿1姚安林1赵师平2么惠全3黄泽俊3曾祥国2
(1.西南石油大学 石油工程学院,成都 610500;2.四川大学 建筑与环境学院,成都 610065;3.中国石油西气东输管道公司,上海 200122)
Author(s):
LI You-lü1YAO An-lin1ZHAO Shi-ping2YAO Hui-quan3HUANG Ze-jun3ZENG Xiang-guo2
(1.School of Petroleum Engineering,Southwest Petroleum University,Chengdu 610500,China;2.College of Architecture and Environment,Sichuan University,Chengdu 610065,China;3.Petrochina WestEast Gas Pipeline Company,Shanghai 200122,China)
关键词:
埋地输气管道爆炸荷载数值模拟破坏模式极限载荷
Keywords:
blast loadingburied gas pipelinenumerical simulationfailure modeextreme loading
分类号:
TE973.6
DOI:
1001-3938(2009)11-0063-07
文献标志码:
A
摘要:
定量分析临近管道爆破对埋地输气管道产生的动力响应有助于合理制定输气管道的安全保护措施。利用LS - DYNA 3D有限元程序,根据准静定理论计算爆腔半径,在爆腔内壁施加压力时程,建立了爆腔-岩土介质-输气管道动力相互作用模型,基于多种工况下的数值模拟分析,探讨了埋地输气管道动态响应过程中管道质点速度和动应力峰值分别和装药量、爆心距的关系,以两倍弹性斜率准则确定管道在特定工况下的极限载荷,进一步建立了装药量和施工安全距离的经验关系式,此式可以作为输气管道在近距离爆破施工条件下的破坏判据。该模型为埋地输气管道在第三方荷载作用下的风险评估提供了一个计算平台,对埋地输气管道的设计、施工和完整性管理具有一定的参考价值。
Abstract:
The quantitative analysis of the dynamic response of buried pipeline under blast loading in sight of the pipeline will redound to constitute reasonabe gas pipeline safety precautions.In this paper,calculating radius of explosion cavity on quasistatic theory and applying equivalent pressure timehistories inside explosive cavity in LS-DYNA 3D program,The reciprocity mode among explosion cavity,soil and buried gas pipeline is established.The relationship between dynamical maximal responses of buried gas pipeline and the mass of detonator or the distance from blasting center including velocity and dynamical stress is discussed,limit load is confirmed based on the two elastic slope criteria in the specific cases,and the experiential relationship between the mass of detonator and the safe distance is discussed,this relationship can be used as the damage criterion of pipeline engineering under blast.The method of numerical simulation in this paper provided a calculation platform for the risk evaluation of buried gas pipelines during thirdparty interference and the conclusion in this paper may provide some references for the risk evaluation,design and construction of buried gas pipeline.

参考文献/References:

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备注/Memo

备注/Memo:
资助项目:中国石油西气东输管道公司项目(XQSGL01456)和国家科技支撑计划项目(2006BAK02B01)
作者简介:李又绿(1973- ),男,四川蓬安县人,讲师,现在西南石油大学石油工程学院从事油气管道风险评价及完整性管理的科研和油气储运专业教学工作。
收稿日期:2009-05-25
更新日期/Last Update: