Development application of Wave connection to prevention of local buckling on buried gas pipelines due to strike-slip faulting

Articles in Press

Document Type : Original Article

Authors

1 1-Department of structure and earthquake engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran 2-Department of civil engineering, Technical and Vocational university, Tehran, Iran

2 Department of structure and earthquake engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran

10.48301/kssa.2023.390046.2486

Abstract

One of the most challenging of the gas pipeline transition industry is preserving the pipeline due to the hazard of ground motions such as fault movements. Wave connection can create a rotational deflection by its deformation capacity to limit failure area of pipeline. In this paper, the application of wave connection in cross-gas transmission pipes with faults is developed. Wave bonding with high ductility capacity shows the behavior of the plastic joint, with the difference that without a significant increase in plastic strain, it will be able to provide axial, shear and rotational displacements. One of the influential parameters in the response of buried pipes is the length of the modeled pipe and soil. This length depending on relative soil-pipe stiffness. In this paper, the length of the optimized model was considered to be more than 3 times the length of the model recommended in previous studies. The results show that this change in length will change the tube response by about 20%. Also, four node shell elements and eight node solid elements intended for pipes and soil, respectively. One of the most important damage to the pipe is local buckling. The results show that the use of wave connection will result in the complete elimination of this damage and also an 80% reduction in strain values.

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Karafan Quarterly Scientific Journal

Articles in Press, Accepted Manuscript
Available Online from 28 August 2023

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History

  • Receive Date: 15 March 2023
  • Revise Date: 07 June 2023
  • Accept Date: 13 August 2023

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