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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.39 No.4
- 발행연도
- 2021.1
- 수록면
- 453 - 469 (17page)
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초록· 키워드
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The cracking at the transverse diaphragm cutout is one of the most severe fatigue failures threatening orthotropic steel decks (OSDs), whose mechanisms and crack treatment techniques have not been fully studied. In this paper, full-scale experiments were first performed to investigate the fatigue performance of polished cutouts involving the effect of an artificial geometrical defect. Following this, comparative experimental testing for defective cutouts strengthened with carbon fiber-reinforced polymer (CFRP) was carried out. Numerical finite element analysis was also performed to verify and explain the experimental observations. Results show that the combinative effect of the wheel load and thermal residual stress constitutes the external driving force for the fatigue cracking of the cutout. Initial geometrical defects are confirmed as a critical factor affecting the fatigue cracking. The principal stress 6 mm away from the free edge of the cutout can be adopted as the nominal stress of the cutout during fatigue evaluation, and the fatigue resistance of polished cutouts is higher than Grade A in AASHTO specification. The bonded CFRP system is highly effective in extending the fatigue life of the defective cutouts. The present study provides some new insights into the fatigue evaluation and repair of OSDs.
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참고문헌 (49)
참고문헌 신청
AASHTO / 2017 / LRFD Bridge Design Specifications / American Association of State Highway and Transportation Officials
Jin-Hee Ahn / 2007 / Fatigue experiment of stud welded on steel plate for a new bridge deck system / Steel and Composite Structures, An International Journal 7(5):391~404
Y. Ai / 2019 / Probabilistic modeling of fatigue life distribution and size effect of components with random defects / International Journal of Fatigue 126:165~173
Mohammed Altaee / 2019 / Practical Application of CFRP Strengthening to Steel Floor Beams with Web Openings: A numerical Investigation / Journal of Constructional Steel Research 155:395~408
Mustafa Aygül / 2012 / Modelling and fatigue life assessment of orthotropic bridge deck details using FEM / International Journal of Fatigue 40:129~142
Jin-Hee Ahn / 2007 / Fatigue experiment of stud welded on steel plate for a new bridge deck system / Steel and Composite Structures, An International Journal 7(5):391~404
Y. Ai / 2019 / Probabilistic modeling of fatigue life distribution and size effect of components with random defects / International Journal of Fatigue 126:165~173
Mohammed Altaee / 2019 / Practical Application of CFRP Strengthening to Steel Floor Beams with Web Openings: A numerical Investigation / Journal of Constructional Steel Research 155:395~408
Mustafa Aygül / 2012 / Modelling and fatigue life assessment of orthotropic bridge deck details using FEM / International Journal of Fatigue 40:129~142
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해상 강관구조물의 피로수명해석
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