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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.78 No.3
- 발행연도
- 2021.1
- 수록면
- 231 - 253 (23page)
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초록· 키워드
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Pure bending loading conditions are not frequently occurred in practical engineering, but the flexural researches are important since it’s the basis of mechanical property researches under complex loading. Hence, the objective of this paper is to investigate the flexural behavior of concrete-filled rectangular steel tube (CFRT) through combined experimental and numerical studies. Flexural tests were conducted to investigate the mechanical performance of CFRT under bending. The load vs. deflection curves during the loading process was analyzed in detail. All the specimens behaved in a very ductile manner. Besides, based on the experimental result, the composite action between the steel tube and core concrete was studies and examined. Furthermore, the feasibility and accuracy of the numerical method was verified by comparing the computed results with experimental observations. The full curves analysis on the moment vs. curvature curves was further conducted, where the development of the stress and strain redistribution in the steel tube and core concrete was clarified comprehensively. It should be noted that there existed bond slip between the core concrete and steel tube during the loading process. And then, an extensive parametric study, including the steel strength, concrete strength, steel ratio and aspect ratio, was performed. Finally, design formula to calculate the ultimate moment and flexural stiffness of CFRTs were presented. The predicted results showed satisfactory agreement with the experimental and FE results. Additionally, the difference between the experimental/FE and predicted results using the related design codes were illustrated.
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참고문헌 (37)
참고문헌 신청
AIJ / 1997 / Recommendations for Design and Construction of Concrete Filled Steel Tubular Structures / Architectural Institute of Japan
AISC / 1999 / Load and Resistance Factor Design Specification for Structural Steel Buildings(IL), American Institute of Steel Construction / American Institute of Steel Construction
Farhad Aslani / 2015 / Predicting the axial load capacity of high-strength concrete filled steel tubular columns / Steel and Composite Structures, An International Journal 19(4):967~993
2012 / CECS28, Technical Specification for Concrete-Filled Steel Tubular Structures / China Planning Press
Chang, X. / 2014 / Analysis of circular concrete-filled steel tube support in high ground stress conditions / Tunn. Undergr. Sp Tech 43(6):41~48
AISC / 1999 / Load and Resistance Factor Design Specification for Structural Steel Buildings(IL), American Institute of Steel Construction / American Institute of Steel Construction
Farhad Aslani / 2015 / Predicting the axial load capacity of high-strength concrete filled steel tubular columns / Steel and Composite Structures, An International Journal 19(4):967~993
2012 / CECS28, Technical Specification for Concrete-Filled Steel Tubular Structures / China Planning Press
Chang, X. / 2014 / Analysis of circular concrete-filled steel tube support in high ground stress conditions / Tunn. Undergr. Sp Tech 43(6):41~48
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