Computers and Concrete

  • 제30권6호
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  • Pages.445-453
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  • 2022
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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Experimental and numerical study on pre-cambered deep deck-plate system

  • Seung-Ho, Choi (Department of Architectural Engineering, University of Seoul) ;
  • Inwook, Heo (Department of Architectural Engineering, University of Seoul) ;
  • Khaliunaa, Darkhanbat (Department of Architectural Engineering and Smart City Interdisciplinary Major Program, University of Seoul) ;
  • Sung-Mo, Choi (Department of Architectural Engineering, University of Seoul) ;
  • Kang Su, Kim (Department of Architectural Engineering and Smart City Interdisciplinary Major Program, University of Seoul)
  • 투고 : 2022.09.02
  • 심사 : 2022.11.10
  • 발행 : 2022.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

A pre-cambered deep deck-plate system has been developed that can realize a long span by offsetting the deflection caused by a construction load. In this study, finite element (FE) analysis is performed to examine the preload-camber relationship introduced into a deck and calculate the deflection reflecting the ponding effect that arises during concrete pouring. The FE analysis results showed that the stress of the bottom plate was half of the yield stress when the pre-camber of approximately 30 mm was introduced. Based on the FE results, a full-scale deep deck-plate is fabricated, a pre-camber is introduced, and concrete is poured to measure deflection. A deflection calculation formula that reflects the ponding effect is proposed, and the deflections yielded by the proposed model, experimental results, and FE results are compared. Results show that the proposed model can accurately estimate the deflection of non-supported deep deck-plate systems after concrete is poured.

키워드

과제정보

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government(MSIT) (No. 2021R1A4A1031201) for Sung-Mo Choi and Seung-Ho Choi. Also, this research was supported by the Basic Study and Interdisciplinary R&D Foundation Fund of the University of Seoul (2022) for Inwook Heo, Khaliunaa Darkhanbat, and Kang Su Kim.

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