Effects of Varying Parameters on Underground Structures (Pipes) Due to Seismic Action of Surface Accidental Explosion

Olarewaju, A.J. (2019) Effects of Varying Parameters on Underground Structures (Pipes) Due to Seismic Action of Surface Accidental Explosion. International Journal of Advances in Civil and Infrastructure Engineering, IJACIE, 1 (1). pp. 1-6. ISSN 2550-7192

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Abstract

Behavior of underground pipes due to accidental explosion above the ground surface was studied using finite element based numerical code, ABAQUS. Pressure load parameters from accidental explosions above the ground surface but very close to the ground surface were estimated using Unified Facilities Criteria (2008). Using the ground movement parameters, behaviors of modeled steel and concrete pipes buried in loose sand, dense sand and undrained clay were examined and parametric studies carried out. For the elastic, homogeneous and isotropic materials considered, the values of Young’s modulus, E, Poisson’s ratio, υ and densities of steel, concrete, loose sand, dense sand and undrained clay as revealed by several researchers and pipe manufacturers were used to observed the behavior of underground pipes buried at 1m depth due to loads from accidental explosion above the ground surface and parameters varied. Time integration technique of finite difference and finite element in ABAQUS/Explicit numerical code was used to solve the governing dynamic equation of motion. The observed parameters are displacement, pressure, mises and strain at the crown, invert and sprig-line of pipes buried in different soil media. From the results, there is no remarkable changes in the behavior of all the coefficient of friction investigated while there is reduction in mises, stress and displacement as the thickness of steel and concrete pipes increases. There is reduction in crown and spring-line as the Young’s modulus of soil and pipe increases while all the observed paremeters increases as the pressure loads increases in steel and concrete pipes

Item Type:	Article
Uncontrolled Keywords:	Accidental, Explosions, Underground, Surface, Pipes, Seismic, Parameters
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Joy Oluwabukola Olayiwola
Date Deposited:	28 May 2021 09:04
Last Modified:	28 May 2021 09:04
URI:	http://eprints.federalpolyilaro.edu.ng/id/eprint/1363

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