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Title |
Composite Behavior and Shear Strength of DH-Beams with Steel Deck Plates
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DOI |
http://dx.doi.org/10.11112/jksmi.2016.20.3.001 |
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Keywords |
철제 거푸집 ; 전단강도 ; 보강효과 ; 비선형 유한요소해석 ; 전단강도 기여도 계수 DH-Beam ; Steel Form ; Shear Strength ; Reinforcement Effects ; Nonlinear Analysis ; Shear Contribution Coefficient |
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Abstract |
The purpose of this study is to examine the shear strength and structural performance of DH-Beams. The DH-Beam construction method uses thin steel plates as form-works and structural elements. Steel plates and rebars for DH-Beams were prefabricated at factory and then erected before casting concrete at construction sites. In this study, the contribution of steel plates to the shear strength of DH-Beam was evaluated since the plates were expected to work as reinforcements. Five test specimens were made for experimental and analytical studies. They consisted of two DH-Beams for the positive loading test and two DH-Beams for the negative loading test and a RC beam for the comparison purpose. Test results on DH-Beams were compared with design equations and the RC beam test result. It was proven that DH-Beams demonstrated the good shear behavior showing sufficient strengths and deformation capacities. Nonlinear analyses with test specimens were also used to evaluate the contribution of DH plates to strengths. Analytical models included various cases such as beams with lateral plates only or beams without any plates. These analyses also showed that steel plates can contribute to the enhancement of shear strength of DH-Beams. Based on experimental and analytical studies, it was concluded that steel plates of DH-Beams can be used as good shear reinforcements.
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