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Journal of Failure Analysis and Prevention

, Volume 16, Issue 4, pp 576–582 | Cite as

Mechanical Response of a Buried Pipeline to Explosion Loading

  • Lan Zhang
  • Zheng Liang
  • Jie Zhang
Technical Article---Peer-Reviewed

Abstract

In order to study the stress-strain response of a buried pipeline with internal pressure under the ground explosive, a numerical calculation model of the buried pipeline with internal pressure was established. The dynamic process of the buried pipeline was simulated after the explosion on the ground. Effects of internal pressure, magnitude of TNT, wall thickness, and buried depth on the stress-strain of pipeline were studied. The results showed that the region of high stress and plastic strain presented to the upper pipeline and extended toward axial direction, and then extended toward circumferential direction under the ground explosion. With the increasing of internal pressure, the high-stress zone fades away, the plastic strain zone and deformation of pipeline decrease. The stress and deformation of buried pipeline increase with the magnitude of TNT increases, but they decrease with the increasing of buried depth and wall thickness. Those results can provide theoretical basis and reference for pipe laying of oil-gas pipeline, safety evaluation, and maintenance, etc.

Keywords

Buried pressure pipeline Ground explosion Numerical simulation Stress Plastic strain 

Notes

Acknowledgments

This work is supported by Science and Technology Innovation Talent Engineering Project of Sichuan Province (2016RZ0040).

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Copyright information

© ASM International 2016

Authors and Affiliations

  1. 1.School of Mechatronic EngineeringSouthwest Petroleum UniversityChengduChina

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