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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.25 No.1
- 발행연도
- 2017.1
- 수록면
- 35 - 43 (9page)
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초록· 키워드
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This paper presents the findings of experimental and numerical investigations on failure analysis and structural behavior of notched steel I-beams reinforced by bonded Carbon Fiber Reinforced Polymer (CFRP) plates under static load. To find solutions for preventing or delaying the failures, understanding the CFRP failure modes is beneficial. One non-strengthened control beam and four specimens with different deficiencies (one side and two sides) on flexural flanges in both experimental test and simulation were studied. Two additional notched beams were investigated just numerically. In the experimental test, four-point bending method with static gradual loading was employed. To simulate the specimens, ABAQUS software in full three dimensional (3D) case and non-linear analysis method was applied. The results show that the CFRP failure modes in strengthening of deficient steel I-beams include end-debonding, below point load debonding, splitting and delamination. Strengthening schedule is important to the occurrences and sequences of CFRP failure modes. Additionally, application of CFRP plates in the deficiency region prevents crack propagation and brittle failure.
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참고문헌 (29)
참고문헌 신청
Ammar, N. / 1996 / Rehabilitation of steel bridge girders with graphite pultrusion
Al-Emrani, M. / 2006 / Experimental and numerical investigation of the behaviour and strength of composite steel-CFRP members / Adv. Struct. Eng 9(6):819~831
Colombi, P. / 2005 / Plasticity induced fatigue crack growth retardation model for steel elements by composite patch / Theor. Appl. Fract. Mech 43(1):63~76
Colombi, P. / 2006 / Reinforcement delamination of metallic beams strengthened by FRP strips : fracture mechanics based approach / Eng. Fract 73(14):1980~1995
Dawood, M. / 2007 / Fatigue and overloading behaviour of steel concrete flexural members strengthened with high modulus CFRP materials / J. Compos. Construc 11(6):659~669
Al-Emrani, M. / 2006 / Experimental and numerical investigation of the behaviour and strength of composite steel-CFRP members / Adv. Struct. Eng 9(6):819~831
Colombi, P. / 2005 / Plasticity induced fatigue crack growth retardation model for steel elements by composite patch / Theor. Appl. Fract. Mech 43(1):63~76
Colombi, P. / 2006 / Reinforcement delamination of metallic beams strengthened by FRP strips : fracture mechanics based approach / Eng. Fract 73(14):1980~1995
Dawood, M. / 2007 / Fatigue and overloading behaviour of steel concrete flexural members strengthened with high modulus CFRP materials / J. Compos. Construc 11(6):659~669
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