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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.31 No.3
- 발행연도
- 2019.1
- 수록면
- 291 - 301 (11page)
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초록· 키워드
오류제보하기
Pure torsion loading conditions were not frequently occurred in practical engineering, but the torsional researches were important since it’s the basis of mechanical property researches under complex loading. Then a 3D finite element model with precise material constitutive models was established, and the effectiveness was verified with test data. Parametric studies with varying factors as steel yield strength, concrete strength and sectional height-width ratio, were performed. Internal stress state and the interaction effect between encased steel tube and the core concrete were analyzed. Results indicated that due to the confinement effect between steel tube and core concrete, the torsional strength of CFT columns was greatly improved comparing to plain concrete columns. The steel ratio would greatly influence the torque share between the steel tube and the core concrete. Then the torsional strength calculation formulas for core concrete and the whole CFT column were proposed. The proposed formula could be simpler and easier to use with guaranteed accuracy. Related design codes were more conservative than the proposed formula, but the proposed formula presented more satisfactory agreement with experimental results.
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참고문헌 (28)
참고문헌 신청
Abed, F. / 2013 / Experimental and numerical investigations of the compressive behavior of concrete filled steel tubes(CFSTs) / J. Struct. Eng 80:429~439
Farhad Aslani / 2016 / Confinement models for high strength short square and rectangular concrete-filled steel tubular columns / Steel and Composite Structures, An International Journal 22(5):937~974
Beck, J. / 2003 / Fundemental Pure Torsional Properties of Concrete Filled Circular Steel Tubes / J. Mater. Concrete Struct. Pavements 60(739):285~296
2012 / CECS28-2012, China Standard, Technical specification for concrete-filled steel tubular structures / China Planning Press
Chen, Y. W. / 2003 / Research on torsion and section behavior of concrete-filled steel tubular columns
Farhad Aslani / 2016 / Confinement models for high strength short square and rectangular concrete-filled steel tubular columns / Steel and Composite Structures, An International Journal 22(5):937~974
Beck, J. / 2003 / Fundemental Pure Torsional Properties of Concrete Filled Circular Steel Tubes / J. Mater. Concrete Struct. Pavements 60(739):285~296
2012 / CECS28-2012, China Standard, Technical specification for concrete-filled steel tubular structures / China Planning Press
Chen, Y. W. / 2003 / Research on torsion and section behavior of concrete-filled steel tubular columns
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