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Title |
Effects of Corrugated GFRP Shear Connector Width and Pitch on In-plane Shear Behavior of Insulated Concrete Sandwich Wall Panels (CSWP)
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Authors |
장석준 ; 오태식 ; 유영찬 ; 김호룡 ; 윤현도 |
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DOI |
https://doi.org/10.4334/JKCI.2014.26.4.421 |
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Keywords |
중단열 벽체 ; 면내전단거동 ; 전단연결재 ; 유리섬유복합체 ; 단열성능 insulated concrete sandwich wall panels(CSWP) ; in-plane shear behavior ; shear connector ; glass fiber reinforced polymer(GFRP) ; thermal property |
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Abstract |
This paper describes the experimental results of insulated concrete sandwich wall panels (CSWP) with corrugated glass fiber-reinforced polymer (GFRP) shear connectors under in-plane shear loading. Corrugated GFRP shear connectors were used to improve the thermal property of insulated CSWP and to achieve composite action between the interior and exterior concrete wall panels. Test specimens were consist of three concrete panels with two insulation layers between concrete panels and middle concrete panels was loaded in the direction of gravity. To evaluate the effects of insulation types (extruded polystyrene, XPSS and expanded polystyrene, EPS), shear connector pitch (300 and 400 mm) and width (10 and 15 mm) on in-plane shear behavior of insulted CSWP, failure mode and shear flow-average relative slip relationship of specimens were investigated. Test results indicate that the bond stress between concrete panel and insulation is considerable initially. Especially in case of insulated CSWP without shear connector, initial stiffness of CSWP with XPSS is superior to that of CSWP with EPS. The shear connector's contribution to in-plane shear performance of insulated CSWP depends on the type of insulation.
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