Advances in concrete construction

  • 제17권5호
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  • Pages.273-284
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  • 2024
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  • 2287-5301(pISSN)
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  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
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Flexural behaviour of fully concrete encased steel castellated section with different configuration of openings

  • G. Velrajkumar (Department of Civil Engineering, Easwari Engineering College) ;
  • M.P. Muthuraj (Department of Civil Engineering, Coimbatore Institute of Technology)
  • 투고 : 2023.11.17
  • 심사 : 2024.09.06
  • 발행 : 2024.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

The steel-concrete composite system has been playing a vital role in the construction sector for the past two decades. By using steel and concrete together, we achieve strong load resistance with minimal deflection and bending stress. The study focuses on the numerical and analytical behaviour of concrete encased steel castellated beams and compared them with previous experiments. The study used five composite beams, including one control reinforced concrete beam (CC), one fully concrete encased steel beam (FCES), and three fully concrete encased castellated beams. The major variable is the opening configuration of the castellated beam, such as openings along the longitudinal axis, above the longitudinal axis, and below the longitudinal axis. The 150 mm × 250 mm cross section and 2000 mm in length of beams were used. Using the finite element software ANSYS, we conduct nonlinear finite element analysis for the entire beam and compare it with test data. The numerical load carrying capacity of concrete encased steel castellated beam with a hexagonal opening above the longitudinal axis (FCESCB H2) is 160 kN is closer to the experimental observation. Von Mises strain of FCESB is 0.004232, which is lower than CB and composite castellated beam. The ductility factor and energy absorption capacity of FCESB are 5.090 and 1688.47 kNm. It was observed that the configuration of the opening will influence the strength of the composite beam. Plastic moment methods were employed to estimate the ultimate load carrying capacity of the beam. In the analytical study the beams were assumed as perfectly plastic. The ultimate analytical load carrying capacity of FCESCB H2 is 21.87% higher than FCESB. It found that performing FCESCB H2 is superior to the entire specimen.

키워드

과제정보

The authors sincerely thank the department for giving permission to use the equipment procured from DST-FIST and AICTE MODRODS. This was completed using the equipment sponsored by DST-FIST Programme No.SR/FST/College-110/2017, Government of India. And AICTE MODROBS F.No.9.66/RIFD/MODROBS/Policy - 1/2017-18 Dt. 28.2.2019 Government of India.

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