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Structural Performance of Double Rip Decks Reinforced with Inverted Triangular Truss Girders

역삼각 트러스 거더로 보강된 더블 골 데크 성능 평가

  • Received : 2017.11.15
  • Accepted : 2017.12.02
  • Published : 2017.12.29

Abstract

This paper proposes a new composite deckplate system reinforced with inverted triangular truss girders(called 'D Deck'), which does not require the use of temporary supports at construction stage. The proposed system retains increased stiffness and strength while keeping the absolute floor height change to a minimum level and can be utilized as floor systems of various types beam members such as the conventional wide-flange and U-shaped composite beams. In order to evaluate the performance of the proposed system, five specimens with a span of 5.5 m were fabricated and tested under field loading conditions consisting of several intermediate steps. The load-deflection curves of each specimen were plotted and compared with the nonlinear three-dimensional finite element analysis results. The comparison showed that the effective load sharing between the truss girders and floor deck occurs and the maximum deflection under construction stage loading is well below the limit estimated by the provisions in Korea Building Code.

Acknowledgement

Supported by : 한국연구재단

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