Reinforcement of structures against explosion by providing suitable structural shape and determining the type of the optimal fibers in concrete mix

Sepehri, Mohammad; Abbasi, Mohammad Amin

Document Type : Original Article

Authors

¹ Assistant Professor, Department of Control Engineering, Khatam Ol Anbia University, Tehran, Iran

² Master of science in Structural Engineering, Zand University, Shiraz, Iran.

Abstract

In this article, two important parameters in the discussion of strengthening structures against blast load have been investigated in Abaqus finite element software. In the first step, the type of concrete materials resistant to the blast load and in the second step, the geometric shape of the structure resistant to the blast load has been investigated. To determine the blast-resistant concrete materials, reinforced concrete design models were subjected to blast load, and finally concrete reinforced with macro steel-micro steel hybrid fibers showed the best resistance against blast load. By reinforcing concrete with macro steel-micro steel hybrid fibers, the amount of concrete damage can be reduced by 70%. Also, to determine the structural form resistant to explosion, two structural forms, cubic and hemispherical, were subjected to the blast load and the results showed that the hemispherical structural form shows more resistance to the blast load. Also, to determine the structural form resistant to explosion, two structural forms, cubic and hemispherical, were subjected to the blast load, and the results showed that the hemispherical structural form shows more resistance to the blast load, and the level of structural damage It is reduced to 49%. Also, two hemispherical structures made with control concrete and macro steel-micro steel composite fibers were subjected to severe blast load and it was found that the use of fibers in this form of structures reduces the vulnerability by 26%.

Keywords

20.1001.1.28211553.1404.4.1.1.9

Main Subjects

Passive defense (detection, decontamination and protection and safety - chemical, biological and nuclear, etc.)

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Reinforcement of structures against explosion by providing suitable structural shape and determining the type of the optimal fibers in concrete mix

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Volume 4, Issue 1April 2025Pages 1-21

Volume 4, Issue 1
April 2025
Pages 1-21