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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.34 No.4
- 발행연도
- 2020.1
- 수록면
- 499 - 509 (11page)
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The purpose of this paper is to investigate the degradation law of stiffness of steel-concrete composite beams after certain fatigue loads. First, six test beams with stud connectors were designed and fabricated for static and fatigue tests. The resultant failure modes under different fatigue loading cycles were compared. And an analysis was performed for the variations in the load-deflection curves, residual deflections and relative slips of the composite beams during fatigue loading. Then, the correlations among the stiffness degradation of each test beam, the residual deflection and relative slip growth during the fatigue test were investigated, in order to clarify the primary reasons for the stiffness degradation of the composite beams. Finally, based on the stiffness degradation function under fatigue loading, a calculation model for the residual stiffness of composite beams in response to fatigue loading cycles was established by parameter fitting. The results show that the stiffness of composite beams undergoes irreversible degradation under fatigue loading. And stiffness degradation is associated with the macrobehavior of material fatigue damage and shear connection degradation. In addition, the stiffness degradation of the composite beams exhibit S-shaped monotonic decreasing trends with fatigue cycles. The general agreement between the calculation model and experiment shows good applicability of the proposed model for specific beam size and fatigue load parameters. Moreover, the research results provide a method for establishing a stiffness degradation model for composite beams after fatigue loading.
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참고문헌 (30)
참고문헌 신청
N. D. Adasooriya / 2014 / Remaining fatigue life estimation of corroded bridge members / Fatigue & Fracture of Engineering Materials & Structures 37(6):603~622
Ali Amiri / 2017 / A new approach of stiffness degradation modeling for carbon fiber-reinforced polymers under cyclic fully reversed bending / Journal of Composite Materials 51(20):2889~2897
British Standards Institution / 2005 / Eurocode 4: Design of Composite Structures – Part 1.2 General rules and rules for bridges, BS EN 1994-1-2 / BSI
Cheng-Cheng Chen / 2019 / Behavior of Partially Concrete Encased Steel Beams Under Cyclic Loading / International Journal of STEEL STRUCTURES 19(1):255~268
Lijuan Cheng / 2011 / Flexural fatigue analysis of a CFRP form reinforced concrete bridge deck / Composite Structures 93(11):2895~2902
Ali Amiri / 2017 / A new approach of stiffness degradation modeling for carbon fiber-reinforced polymers under cyclic fully reversed bending / Journal of Composite Materials 51(20):2889~2897
British Standards Institution / 2005 / Eurocode 4: Design of Composite Structures – Part 1.2 General rules and rules for bridges, BS EN 1994-1-2 / BSI
Cheng-Cheng Chen / 2019 / Behavior of Partially Concrete Encased Steel Beams Under Cyclic Loading / International Journal of STEEL STRUCTURES 19(1):255~268
Lijuan Cheng / 2011 / Flexural fatigue analysis of a CFRP form reinforced concrete bridge deck / Composite Structures 93(11):2895~2902
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