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RISS 인기검색어
- 검색키워드
- 저자 : Huanzhi Jiang (검색결과 2 건)
- 무료
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Composite Behavior of Sandwich Panels with W-Shaped SGFRP Connectors
Huanzhi Jiang,Zhengxing Guo,Jiabin Liu 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.5
The composite behavior and structural behavior of four full-scale precast concrete sandwich panels (PCSPs) with different numberand distribution of W-shaped steel glass fiber reinforced polymer (SGFRP) shear connectors were investigated both experimentallyand theoretically in this paper. Test results showed that the number of W-shaped SGFRP connectors in the panel ends a third ratherthan in the middle section has a significant impact on the flexural capacity and the composite action of PCSPs. The ultimate loadincreased in proportion to the number of W-Connectors in both panel ends a third approximately. The shear connectors could transfera large level of shear from one wythe to the other to enable the two concrete wythes to exhibit partially composite behavior. Thedegree of partially composite action of the tested PCSPs achieved obviously different depending on the number of connectors in theends a third. Good correlation was found between experimental obtained results and the theoretical calculation results of the degreeof composite action.
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The Shear Behavior of Precast Concrete Sandwich Panels with W-shaped SGFRP Shear Connectors
Huanzhi Jiang,Zhengxing Guo,Jiabin Liu,Hui Liu 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.10
This paper presents a horizontal direct shear push-out test program to evaluate the shear behavior of Precast Concrete Sandwich Panel (PCSP) systems with W-shaped Steel Glass Fiber-reinforced Polymer (SGFRP) shear connectors. The experimental program is composed of twelve PCSPs reinforced with W-shaped SGFRP connectors and six PCSPs for comparison that were panels using pure W-shaped GFRP connectors, GFRP pin connectors and stainless-steel truss connectors. The peak shear load, the relationships of shear force-average relative slip, the shear performance of each connector, and the effects of different height, angle and diameter of the SGFRP connector were investigated in this paper. The test results indicate that all specimens with the W-shaped SGFRP shear connectors in this study exhibited an elastic-brittle response caused by pull-out of certain connectors before the ultimate strength was utilized fully and the ductility of the SGFRP material did not play out. Nevertheless, the shear capacity of panels with SGFRP connectors was approximately 2 times that with pure W-shaped GFRP connectors in the case of all parameters being the same, approximately 2 times that with stainless-steel truss connectors for which diameter was reduced by a half, and approximately 2.5 times that with GFRP pin connectors. A reasonable design of connector diameter, spacing and measure of strengthened anchorage is required to ensure the ductile failure of panels.
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