Dimensionless response of underground pipes due to blast loads using finite element method

Olarewaju, Akinola Johnson and Kamaeswara Rao, N. S. V. and Md. Abdul Mannan, (2011) Dimensionless response of underground pipes due to blast loads using finite element method. Electronic Journal of Geotechnical Engineering, 16 . pp. 563-574. ISSN 1089-3032

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Official URL: http://www.ejge.com/2011/Ppr11.043/Ppr11.043ar.pdf

Abstract

Underground pipes are used for water supply, drainage, oil and gas supply, irrigation, etc. Blast constituent comprises of the ground media, intervening layer, structures, and blast. This study is aimed at determining the response of simulated empty underground pipes due to blast loads using finite element method. In this study, blast load parameters were determined using Unified Facilities Criteria (2008). Time integration technique in Abaqus/Explicit was used to solve the equation of motion. The soil and pipes materials were considered as elastic, homogeneous and isotropic. The material properties as obtained from different researchers and pipe manufacturers were used. Dimensional analysis was used to present the results. From the result of the dimensionless parameters, it was observed that depth of burial of pipes play a significant role in the response of underground pipes due to surface and underground blasts while coefficient of friction has little effect due to underground blast. Dimensionless pressure and deflection of underground pipes reduce as embedment ratios increase in surface and open trench blasts while this is not so in underground blast. Finally guidelines thus established would help in the design of underground pipes to resist effects of blasts. Consequently, the environmental risk and hazards caused by blasts will be reduced.

Item Type:Article
Uncontrolled Keywords:Blast, Dimensional analysis, Environment, Finite element method, Underground pipes, Blast, Blast loads, Coefficient of frictions, Dimensional analysis, Dimensionless parameters, Environment, Environmental risks, Equation of motion, Material property, Oil and gas, Time integration, Underground blasts, Underground pipes, Aerodynamic loads, Equations of motion, Gas supply, Mathematical techniques, Pipe, Water supply, Finite element method, Blasting, Finite element method, Friction, Pipe, Underground construction
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:SCHOOL > School of Engineering and Information Technology
ID Code:5136
Deposited By:IR Admin
Deposited On:24 Oct 2012 09:13
Last Modified:17 Feb 2015 11:43

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