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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.76 No.1
- 발행연도
- 2020.1
- 수록면
- 67 - 81 (15page)
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초록· 키워드
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Pretensioned concrete (PC) is widely used in contemporary construction. Bond of prestressing strand is significant for composite-action between the strand and concrete in the transfer and flexural-bond zones of PC members. This study develops a new methodology for quantifying the bond of 18-mm prestressing strand in PC members based on results of a pullout test, the Standard Test for Strand Bond (STSB). The experimental program includes: (a) twenty-four pretensioned concrete beams, using a wide range of concrete compressive strength; and (b) twelve untensioned pullout specimens. By testing beams, the transfer length, flexural-bond length, and development length were all measured. In the STSB, the pullout forces for the strands were measured. Experimental results indicate a significant relationship between the bond of prestressing strand to the code-established design parameters, such as transfer length and development length. However, the code-predictions can be unconservative for the prestressing strands having a low STSB pullout force. Three simplified bond equations are proposed for the design applications of PC members.
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참고문헌 (55)
참고문헌 신청
AASHTO / 2017 / Load and Resistance Factor Design for Highway Bridges Specifications (AASHTO-LRFD) / American Association of State Highway and Transportation Officials
Abdelatif, A. O. / 2015 / Modelling the prestress transfer in pre-tensioned concrete elements / Finite Elem. Anal. Des 94:47~63
Abrishami, H. G. / 1993 / Bond characteristics of pretensioned strand / ACI Mat. J 90(3):228~235
ACI / 2019 / Building Code Requirements for Structural Concrete and Commentary (ACI 318-19) / American Concrete Institute
Arab, A. A. / 2011 / A methodological approach for finite element modeling of pretensioned concrete members at the release of pretensioning / Eng. Struct 33(6):1918~1929
Abdelatif, A. O. / 2015 / Modelling the prestress transfer in pre-tensioned concrete elements / Finite Elem. Anal. Des 94:47~63
Abrishami, H. G. / 1993 / Bond characteristics of pretensioned strand / ACI Mat. J 90(3):228~235
ACI / 2019 / Building Code Requirements for Structural Concrete and Commentary (ACI 318-19) / American Concrete Institute
Arab, A. A. / 2011 / A methodological approach for finite element modeling of pretensioned concrete members at the release of pretensioning / Eng. Struct 33(6):1918~1929
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