NUMERICAL SIMULATION OF RESPONSE OF UNDERGROUND EXPLOSION GROUND SHOCK TO BURIED GAS PIPELINE

doi:10.3863/j.issn.1674-5086.2009.04.037

西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (4): 168-172.DOI: 10.3863/j.issn.1674-5086.2009.04.037

• 石油机械工程及其它 • Previous Articles Next Articles

NUMERICAL SIMULATION OF RESPONSE OF UNDERGROUND EXPLOSION GROUND SHOCK TO BURIED GAS PIPELINE

YAO An-lin¹ ZHAO Shi-ping² YAO Hui-quan³ ZENG Xiang-guo² LIU Yong-jie²

1.College of Civil Engineering and Architecture,Southwest Petroleum University，Chengdu Sichuan 610500，China；2.College of Architecture and Environment,Sichuan University，Chengdu Sichuan 610065，China；3.PetrolChina West-East Gas Pipeline Company，Shanghai 200122，China

Received:1900-01-01 Revised:1900-01-01 Online:2009-08-20 Published:2009-08-20

Abstract

Abstract: In this paper，by using non-linear dynamical theory and Arbitrary Lagrange-Eulerian(ALE) algorithm in LS-DYNA 3D finite element program and selecting proper material constitutive relations，a method of numerical simulation is used to study dynamical response of buried gas pipeline under ground shock wave of underground explosion.By numerical calculation and mathematical analysis of buried gas pipeline in 10 load cases of two data groups，the relationship between dynamical maximal responses of buried gas pipeline and the mass of detonator or the distance between the center of pipeline and the detonator including velocity and dynamical stress is fitted respectively.The simulation results agree with the regularity of empirical equation，which shows that it is feasible for the numerical simulation method in this paper to study dynamical response of buried pipelines under ground shock waves from explosion.The method of numerical simulation in this paper provided a calculation platform for the risk evaluation of buried gas pipelines during third-party damage and the conclusion in this paper may provides significant reference for the risk evaluation and disaster prevention of buried gas pipeline.

Key words: explosion, ground shock, buried gas pipeline, numerical simulation, ALE algorithm

CLC Number:

TE973.1

YAO An-lin ZHAO Shi-ping YAO Hui-quan ZENG Xiang-guo LIU Yong-jie . NUMERICAL SIMULATION OF RESPONSE OF UNDERGROUND EXPLOSION GROUND SHOCK TO BURIED GAS PIPELINE[J]. 西南石油大学学报(自然科学版), 2009, 31(4): 168-172.

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NUMERICAL SIMULATION OF RESPONSE OF UNDERGROUND EXPLOSION GROUND SHOCK TO BURIED GAS PIPELINE

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