News

 Statistics

Number of Journals34
Number of Issues1,306
Number of Articles9,427
Article View9,188,974
PDF Download5,621,548
Massah, S., Salehzadeh, H., Mohammadi, A., Dehghani Ashkozari, G. (2017). Investigating the Behavior of RC Underground Structures Employing Ultra-high Strength Concrete under the Effects of Surface Blasts. Electronic and Cyber Defense, 8(2), 123-132.
Saeed Reza Massah; Hossein Salehzadeh; Ali Mohammadi; Ghassem Dehghani Ashkozari. "Investigating the Behavior of RC Underground Structures Employing Ultra-high Strength Concrete under the Effects of Surface Blasts". Electronic and Cyber Defense, 8, 2, 2017, 123-132.
Massah, S., Salehzadeh, H., Mohammadi, A., Dehghani Ashkozari, G. (2017). 'Investigating the Behavior of RC Underground Structures Employing Ultra-high Strength Concrete under the Effects of Surface Blasts', Electronic and Cyber Defense, 8(2), pp. 123-132.
Massah, S., Salehzadeh, H., Mohammadi, A., Dehghani Ashkozari, G. Investigating the Behavior of RC Underground Structures Employing Ultra-high Strength Concrete under the Effects of Surface Blasts. Electronic and Cyber Defense, 2017; 8(2): 123-132.

Investigating the Behavior of RC Underground Structures Employing Ultra-high Strength Concrete under the Effects of Surface Blasts

علوم و فناوریهای پدافند نوین
Article 4, Volume 8, Issue 2 - Serial Number 28, May 2017, Pages 123-132    PDF (1.37 M)
Authors
Saeed Reza Massah* ; Hossein Salehzadeh; Ali Mohammadi; Ghassem Dehghani Ashkozari
Receive Date: 30 January 2019,  Revise Date: 17 July 2025,  Accept Date: 30 January 2019 
Abstract
Underground structures have entered into the passive defensce discussions as the secure structures in the past five decades. The resistance of tunnel concrete lining subjected to the loads generated by an external explosion is investigated in this study. For this purpose, investigation of tunnel lining subjected to blast waves has been performed using ABAQUS software. Effects of intensive impact loads caused by surface blast on the underground tunnel concrete lining with compressive strength of 30 MPa and also with ultra high strength concrete, both reinforced with steel fibers, with and without steel bars, have been studied. The comparison of the results based on the variation of elastic stresses and strains in tunnel lining has been performed. Explosion of explosive materials induce two types of shock and induction waves at the ground level, both considered simultaneously in this study. The results indicates that the addition of steel fibers to the regular and ultra high strength concrete, with and without steel bars, in comparison to regular reinforced concrete with compressive strength of 30 MPa, under similar loading conditions, can lead to increase in compressive strength of the lining when subjected to explosion.
Keywords
Underground Structure; Ultra-high Strength Concrete; Fiber-Reinforced; Surface Explosion
Statistics
Article View: 549
PDF Download: 224