Structural Engineering and Mechanics

  • 제83권3호
  • /
  • Pages.387-400
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  • 2022
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Parametric study on lightweight concrete-encased short columns under axial compression-Comparison of design codes

  • Divyah, N. (Department of Civil Engineering, PSG Institute of Technology and Applied Research) ;
  • Prakash, R. (Department of Civil Engineering, Alagappa Chettiar Government College of Engineering and Technology) ;
  • Srividhya, S. (Department of Civil Engineering, Varuvan Vadivelan Institute of Technology) ;
  • Sivakumar, A. (Department of Mechanical Engineering, Varuvan Vadivelan Institute of Technology)
  • 투고 : 2022.02.16
  • 심사 : 2022.06.26
  • 발행 : 2022.08.10
⟨ 이전 논문 다음 논문 ⟩

초록

The practice of using encased steel-concrete columns in medium to high-rise structures has expanded dramatically in recent years. The study evaluates existing methodologies and codal guidelines for estimating the ultimate load-carrying characteristics of concrete-encased short columns experimentally. The present condition of composite column design methods was analyzed using the Egyptian code ECP203-2007, the American Institute of Steel Construction's AISC-LRFD-2010, Eurocode EC-4, the American Concrete Institute's ACI-318-2014, and the British Standard BS-5400-5. According to the codes, the axial load carrying characteristics of both the encased steel and concrete sections was examined. The effect of load-carrying capacities in different forms of encased steel sections on encased steel-concrete columns was studied experimentally. The axial load carrying capacity of twelve concrete-encased columns and four conventional reinforced columns were examined. The conclusion is that the confinement was not taken into account when forecasting the strength and ductility of the encased concrete, resulting in considerable disparities between codal provisions and experimental results. The configuration of the steel section influenced the confining effect. Better confinement is achieved with the laced and battened section than with the infilled steel tube reinforced and conventionally reinforced section. The ECP203-2007 code reported the most conservative results of all the codes used.

키워드

과제정보

Author R. Prakash would like to acknowledge the financial support provided by Program TEQIP-III, implemented by the National Project Implementation Unit (NPIU) of the Ministry of Human Resource Development, Government of India.

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