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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.65 No.5
- 발행연도
- 2018.1
- 수록면
- 535 - 546 (12page)
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초록· 키워드
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The objective of this study is to understand the behaviour of hollow core slabs strengthened with FRP and hybrid techniques through numerical and analytical studies. Different strengthening techniques considered in this study are (i) External Bonding (EB) of Carbon Fiber Reinforced Polymer (CFRP) laminates, (ii) Near Surface Mounting (NSM) of CFRP laminates, (iii) Bonded Overlay (BO) using concrete layer, and (iv) hybrid strengthening which is a combination of bonded overlay and NSM or EB. In the numerical studies, three-dimensional Finite Element (FE) models of hollow core slabs were developed considering material and geometrical nonlinearities, and a phased nonlinear analysis was carried out. The analytical calculations were carried out using Response-2000 program which is based on Modified Compression Field Theory (MCFT). Both the numerical and analytical models predicted the behaviour in agreement with experimental results. Parametric studies indicated that increase in the bonded overlay thickness increases the peak load capacity without reducing the displacement ductility. The increase in FRP strengthening ratio increased the capacity but reduced the displacement ductility. The hybrid strengthening technique was found to increase the capacity of the hollow core slabs by more than 100% without compromise in ductility when compared to their individual strengthening schemes.
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참고문헌 (34)
참고문헌 신청
2011 / ACI 318, Building Code Requirements for Structural Concrete and Commentary
2004 / ACI 440, Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Existing Structures
Barbosa, A.F. / 1998 / Analysis of Reinforced Concrete Structures Using Ansys Nonlinear Concrete Model, COMPUTATIONAL MECHANICS, New Trends and Applications :1~7
Becker, R.J. / 1985 / Shear tests of extruded hollow-core slabs / PCI J. 30(2):40~54
Bentz, E.C. / 2006 / Simplified modified compression field theory for calculating shear strength of reinforced concrete elements / ACI Struct. J. 103(4):614~624
2004 / ACI 440, Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Existing Structures
Barbosa, A.F. / 1998 / Analysis of Reinforced Concrete Structures Using Ansys Nonlinear Concrete Model, COMPUTATIONAL MECHANICS, New Trends and Applications :1~7
Becker, R.J. / 1985 / Shear tests of extruded hollow-core slabs / PCI J. 30(2):40~54
Bentz, E.C. / 2006 / Simplified modified compression field theory for calculating shear strength of reinforced concrete elements / ACI Struct. J. 103(4):614~624
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