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DOI QR Code

Dynamic response of reinforced concrete members incorporating steel fibers with different aspect ratios

  • Haido, James H. (Civil Engineering Department, College of Engineering, University of Duhok) ;
  • Abdul-Razzak, Ayad A. (Department of Civil Engineering, College of Engineering, University of Mosul) ;
  • Al-Tayeb, Mustafa M. (School College of Applied Engineering and Urban Planning, University of Palestine) ;
  • Bakar, B.H. Abu (School of Civil Engineering, University Sains Malaysia) ;
  • Yousif, Salim T. (Department of Civil Engineering, AL-Qalam University College) ;
  • Tayeh, Bassam A. (Civil Engineering Department, The Islamic University of Gaza)
  • 투고 : 2020.09.28
  • 심사 : 2020.11.27
  • 발행 : 2021.02.25

초록

Investigations on the dynamic behavior of concrete members, incorporating steel fibers with different aspect ratios, are limited so far and do not covered comprehensively in prior studies. Present endeavor is devoted to examine the dynamic response of the steel fibrous concrete beams and slabs under the influence of impact loading. These members were reinforced with steel fibers in different length of 25 mm and 50 mm. Four concrete mixes were designed and used based on the proportion of long and short fibers. Twenty-four slabs and beams were fabricated with respect to the concrete mix and these specimens were tested in impact load experiment. Testing observations revealed that the maximum dynamic deflection or ductility of the member can be achieved with increasing the fiber length. Structural behavior of the tested structures was predicted using nonlinear finite element analysis with specific material constitutive relationships. Eight nodes plate elements have been considered in the present dynamic analysis. Dynamic fracture energy of the members was calculated and agreement ratio, of more than 70%, was noticed between the experimental and analysis outcomes.

키워드

참고문헌

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