Effect of soil properties on the response of pile to underground explosion
Jayasinghe, Laddu Bhagya
Perera, Nimal J.
Date of Issue2014
School of Civil and Environmental Engineering
This paper develops and presents a fully coupled nonlinear finite element (FE) procedure to treat the response of piles to ground shocks induced by underground explosions. The Arbitrary Lagrange Euler coupling formulation is used in the study with proper state material parameters and equations. Pile responses in four different soil types, viz, saturated soil, partially saturated soil, and loose and dense dry soils are investigated and the results compared. Numerical results are validated by comparing them with those from a standard design manual. Blast wave propagation in soils, horizontal pile deformations, and damages in the pile are presented. Pile damage presented through plastic strain diagrams will enable vulnerability assessment of the piles under the blast scenarios considered. The numerical results indicate that the blast performance of single pile foundations embedded in saturated soil and loose dry soil are more severe than those embedded in partially saturated soil and dense dry soil. The present findings can serve as a benchmark reference for future analysis and design.
DRNTU::Engineering::Civil engineering::Structures and design
Structural engineering International
© 2014 International Association for Bridge and Structural Engineering (IABSE). This paper was published in Structural Engineering International and is made available as an electronic reprint (preprint) with permission of International Association for Bridge and Structural Engineering (IABSE). The paper can be found at the following official DOI: [http://dx.doi.org/10.2749/101686614X13854694314522]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.