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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.74 No.4
- 발행연도
- 2020.1
- 수록면
- 495 - 502 (8page)
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초록· 키워드
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This study investigated the effects of prestressing force on the natural frequency of concrete beams considering changes in the self-weight of the beam. For this, a finite element formulation was derived to account for the increase in the stiffness of a beam-tendon system due to the axial force and deformation induced by prestressing of the tendon. The developed finite element formulation was validated with the data obtained in laboratory experiments. The experimental natural frequencies of the small prestressed concrete (PSC) beam specimens were consistent with those obtained using the proposed method. The first natural frequency increased almost linearly as the prestressing force increased. The proposed method was then applied to four actual PSC bridges typically employed in the field. Different from the laboratory specimens, the first natural frequencies of the actual PSC bridges barely changed or increased with increasing prestressing force. The results of an analytical parametric study showed that the increase in the natural frequency strongly depended on the magnitude of the prestressing force relative to the total weight of the structure. Thus, the variation in the natural frequencies of the actual PSC bridges with high total weight relative to the prestressing force was negligible due to the application of the prestressing force.
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참고문헌 (26)
참고문헌 신청
Reza Abbasnia / 2015 / Simultaneous identification of moving loads and structural damage by adjoint variable / Structural Engineering and Mechanics, An Int＇l Journal 56(5):871~897
2014 / ACI 318-14, Building code requirements for structural concrete / American Concrete Institute
Dall'asta, A. / 1996 / On the coupling between three dimensional bodies and slipping cables / Int. J. Solids Struct 33(24):3587~3600
Dall’asta, A. / 2000 / Dynamics of elastic bodies prestressed by internal slipping cables / Int. J. Solids Struct 37:3421~3438
Dall'asta, A / 1999 / Vibration of beams prestressed by internal frictionless cables / J. Sound Vib 222(1):1~18
2014 / ACI 318-14, Building code requirements for structural concrete / American Concrete Institute
Dall'asta, A. / 1996 / On the coupling between three dimensional bodies and slipping cables / Int. J. Solids Struct 33(24):3587~3600
Dall’asta, A. / 2000 / Dynamics of elastic bodies prestressed by internal slipping cables / Int. J. Solids Struct 37:3421~3438
Dall'asta, A / 1999 / Vibration of beams prestressed by internal frictionless cables / J. Sound Vib 222(1):1~18
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