Analysis of the Effect of Buried Explosive Loading on Underground Reinforced Concrete Structures

Document Type : Research Article

Authors

1 Faculty of Engineering, Civil group, Qom University, Qom, Iran

2 Civil group, Imam Hossein University, Tehran, Iran

Abstract

Nowdays, for the designing of underground structures in addition to common loads such as earthquakes, explosives loading is considered. Most of these structures around the world are constructed in a safe depth in the soil. The depth of earth where underground structure under explosive forces does not receive damage, called “safe”. The depth in design and construction of underground structures for use more of the anchor properties of the soil around the structure and minimize the structural weight and also using the damping properties of the soil to reduce the shock wave caused by the explosion of the exact penetrating weapons. Usually explosive loading of these structures is based on the relations and procedures from theoretical and experimental research. Also the numerical methods and using finite element softwares to calculate the explosion load of these structures has been prevalent. In this study the effects of buried explosion on a reinforced concrete underground structure is investigated numerically and analytically. The numerical simulation was carried out using finite element software AUTODYN. In order to analyze the how to explosive loading and underground structure response, the effect of weight of explosive and buried depth of structures was investigated. Additionally, numerical results with relations that presented in reliable scientific resources and US instructions for designing this type of structures were compared. Finally, according to the results of research, in order to improve the designing of these structures under explosion loading in soil, it’s suggested that the incremental factor doesn’t apply to such loads.

Keywords

Main Subjects

References

[1] P. Smith, J. Hetherington, Blast and ballistic loading of structures Butterworth, in, Heinemann Ltd, 1994.
[2] P.S. Bulson, Explosive Loading of Engineering Structures, 1 edition ed., CRC Press, London ; New York, 1997.
[3] TM5-855-1, Fundamentals of Protective Design for Conventional Weapon, in, Department of U.S Army Security Engineering, Washington, DC.
[4] Taghavi Parsa, M.H. Analysis of the Effects of Surface and Buried Explosions on Underground Structures by Using Numerical Simulation and Semi-Analytical Methods, MS Thesis, Imam Hossein University, Tehran, Iran, 2016. (In Persian)
[5] J.K. Clutter, M. Stahl, Hydrocode simulations of air and water shocks for facility vulnerability assessments, Journal of hazardous materials, 106(1) (2004) 9-24.
[6] B. Luccioni, D. Ambrosini, R. Danesi, Blast load assessment using hydrocodes, Engineering Structures, 28.12 (2006) 1736-1744.
[7] J. Henrych, R. Major, The dynamics of explosion and its use, Elsevier Amsterdam, 1979.
[8] J. Borgers, J. Vantomme, Towards a parametric model of a planar blast wave created with detonating cord, in: 19th International Symposium on the Military Aspects of Blast and Shock, Calgary, Canada, 2006.
[9] Lucksoney, Numerical Results-Based Review of the Hole Created by the Explosion in the Soil, Impact engineering, 35.12 (2008) 17-24.
[10] Anirban, The Tunnel in Soil Subjected to Blast Load Using 2D and 3D Numerical Simulations, Structure and Infrastructure Engineering, 18.3 (2011) 917-924.
[11] Y. Yang, X. Xie, R. Wang, Numerical simulation of dynamic response of operating metro tunnel induced by ground explosion, Journal of rock mechanics and geotechnical engineering, 2.4 (2010) 373-384.
[12] S. Mazek, H. Almannaei, Finite element model of Cairo metro tunnel-Line 3 performance, Ain Shams Engineering Journal, 4.4 (2013) 709-716.
[13] R. Tiwari, T. Chakraborty, V. Matsagar, Dynamic analysis of underground tunnels subjected to internal blast loading, in: World Congress of Computational Mechanics (WCCM XI), Barcelona, 2014.
[14] A. Gholizad, M. Rajabi, Buried concrete structure under blast loading, ADST Journal, 4.3 (2014) 167-179. (In Persian)
[15] R. Pezhman, B. Hadi, Analyzing the impact of the explosion on the surface of concrete tanks buried, 4th International Congress of Civil Engineering, Architecture and Urban Development, 2017.
[16] B. Pandurangan, Development, parameterization and validation of dynamic material models for soil and transparent armor glass, (2009).
[17] I. ANSYS, ANSYS Autodyn User's Manual, USA.
[18] R. Rempling, Concrete wall subjected to fragment impacts-Numerical analyses of perforation and scabbing, (2004).
Amirkabir Journal of Civil Engineering
Volume 51, Issue 1
May and June 2019
Pages 3-18

Files

Share

How to cite

Statistics