Karafan Journal

Karafan Journal

Development Application of Wave Connection to Prevention of Local Buckling on Buried Gas Pipelines Due to Strike-slip Faulting

Document Type : Original Article

Authors
Seyed Mohamad Seyed Kolbadi 1
Nemat Hassani 2
Mohamad Safi 2
1 PhD, Department of Structure and Earthquake Engineering, Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran. And Faculty member, Department of civil engineering, Technical and Vocational University, Tehran, Iran.
2 Associate Professor, 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 gas pipeline transition industries 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 the failure area of the pipeline. In this research, the application of wave connection in cross-gas transmission pipes with faults was developed. Wave bonding with high ductility capacity shows the behaviour 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 modelled pipe and soil. This length depends on relative soil-pipe stiffness. In the present research, 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 showed that this change in length will change the tube response by approximately 20%. In addition, four-node shell elements and eight-node solid elements were intended for pipes and soil, respectively. One of the greatest damages to the pipe is local buckling. The results showed that the use of wave connection will result in the complete elimination of this damage and also an 80% reduction in strain values.
Keywords
Buried Steel Pipe Wave Connection Strike
slip Fault Optimal Pipe Length Local Buckling
Subjects
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Karafan Journal
Volume 21, Issue 1 - Serial Number 66
Engineering & Technical
Spring 2024
Pages 569-611

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