News

 Statistics

Number of Journals34
Number of Issues1,306
Number of Articles9,427
Article View9,189,219
PDF Download5,621,826
peyman, S., Hosseini, M., Taghavi Parsa, M. (2020). Analysis of the Effects of the Presence of Protective Concrete Layer on the Effect of Underground Structures Under the Influence of Explosive Charge. Electronic and Cyber Defense, 11(1), 83-90.
S. peyman; M. R. Hosseini; M. H. Taghavi Parsa. "Analysis of the Effects of the Presence of Protective Concrete Layer on the Effect of Underground Structures Under the Influence of Explosive Charge". Electronic and Cyber Defense, 11, 1, 2020, 83-90.
peyman, S., Hosseini, M., Taghavi Parsa, M. (2020). 'Analysis of the Effects of the Presence of Protective Concrete Layer on the Effect of Underground Structures Under the Influence of Explosive Charge', Electronic and Cyber Defense, 11(1), pp. 83-90.
peyman, S., Hosseini, M., Taghavi Parsa, M. Analysis of the Effects of the Presence of Protective Concrete Layer on the Effect of Underground Structures Under the Influence of Explosive Charge. Electronic and Cyber Defense, 2020; 11(1): 83-90.

Analysis of the Effects of the Presence of Protective Concrete Layer on the Effect of Underground Structures Under the Influence of Explosive Charge

پدافند غیرعامل
Article 8, Volume 11, Issue 1 - Serial Number 41, July 2020, Pages 83-90    PDF (1.19 M)
Document Type: Original Article
Authors
S. peyman* 1; M. R. Hosseini2; M. H. Taghavi Parsa2
1Imam hossein university
2imam hossein university
Receive Date: 03 December 2017,  Revise Date: 28 May 2019,  Accept Date: 07 August 2019 
Abstract
Today, the growth of threats and military weapons and the rise of terrorist attacks has pushed governments into a comprehensive plan of non-operational defense in order to increase their security. Underground structures are one of the most basic ways to protect sensitive and strategic sites against explotions.In this paper, the dynamic interaction of soil and structure is considered, and at this stage, the results of nonlinear dynamic analysis are compared with the results of experimental and analytical relations. Also, while considering the behavior of the buried structure under the influence of the explosion load, the effect of different parameters, such as structural depth and position of the explosion point relative to the structure, and the dynamics characteristics of the complex in the type of structural performance, have been investigated.Then, in the last part, according to the results obtained from the previous section, it was proposed to conclude and provide solutions for protecting and retrofitting the buried structures against the explosion. Finally, it has been observed that the protective concrete layer alone was not effective for the reinforcement of the underground structure due to direct transfer of soil to the soil, and its composition with a porous medium such as a protective concrete box on a structure with porous space is close to 100% Attention was paid to reducing the pressure on the underground structure.
Keywords
Surface Explosion; Retrofitting; Ground Shock; Explosive Charge; Buried Structures; Depth of Explosion; AUTODYN Software
References
  1. مقررات ملی ساختمان ،مبحث بیست و یکم، "پدافند غیرعامل"##
    1. TM 5-855-1, “Fundamentals of protective design for conventional weapons,” U. S. Department of the Army, Washington DC, 1986.##
    2. Ansys Autodyn users Manual, Material library, 2010.##
    3. D. Fiserova, “Numerical Analyses of Buried Mine Explosions With Emphasis on Effect of Soil Properties on Loading,” Cranfield University, 2005-2006.##
    4. B. Pandurangan, “Development, Parameterization and validation of dynamic material models for soil and transparent armor glass,” Graduate school of Clemson University, 2009.##
    5. T. Ngo, P. Mendis, A. Gupta, and J. Ramsay, “Blast Loading and Blast Effects on Structures,” An Overview, The University of Melbourne, Australia.##
    6. H. Chen and R. J. Y. R. Liew, “Explosion and fire analysis of steel frames using mixed element approach,” ASCE: J. Eng. Mech., vol. 131, no. 6, pp. 606-616, 2005.##
    7. Y. Lu, Z. Wang, and K. Chong, “A comparative study of buried structure in soil subjected to blast load using 2D and 3D numerical simulations,” Soil Dynamics and Earthquake Engineering, vol. 25, pp. 275-288, 2005.##
    8. Z. Wang, Y. Lu, H. Hao, and K. Chong, “A full coupled numerical analysis approach for buried structures subjected to subsurface blast,” Computer and Structure, vol. 83, pp. 339-356, 2005.##
    9. Z. Tu and Y. Lu, “Modifications of RHT material model for improved numerical simulation of dynamic response of concrete,” International Journal of lImpact Engineering, vol. 37, pp. 1072-1082, 2010.##
Statistics
Article View: 2,811
PDF Download: 1,691