Buried Pipeline Subjected to Underground Blast Load: Closed-Form Analytical Solution
Publication: International Journal of Geomechanics
Volume 22, Issue 9
Abstract
The current study derives a closed-form analytical solution of buried pipeline subjected to underground blast load. The solution is derived considering Euler Bernoulli’s beam resting on viscoelastic foundation. In viscoelastic foundation, shear interactions between individual Winkler springs are considered. Soil pressure on the pipeline resulting from the self-weight of the soil above the buried pipeline is also incorporated in the present analysis. The finite sine–Fourier transform is employed to obtain the solution for the governing differential equation. The proposed formulation is validated with the results obtained from the past centrifuge model test, finite-element-based three-dimensional (3D) numerical analysis and simplified analytical study. Further, a parametric study is performed to obtain the impact of trinitrotoluene (TNT) charge weight, standoff distance, damping ratio, and flexural rigidity of the pipe-on-pipe response. From the results of the parametric study, it is noticed that peak pipe deformation increases with increasing the TNT charge weight and decreases with increasing the magnitude of standoff distance, damping ratio, and flexural rigidity of the pipe. The proposed formulation can be adopted in the initial design stage for rapid estimation of buried pipe responses subjected to underground blast load.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request (MATLAB code).
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Published In
International Journal of Geomechanics
Volume 22 • Issue 9 • September 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jun 30, 2021
Accepted: Mar 7, 2022
Published online: Jul 11, 2022
Published in print: Sep 1, 2022
Discussion open until: Dec 11, 2022
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