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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.41 No.5
- 발행연도
- 2021.12
- 수록면
- 625 - 636 (12page)
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This paper examines the fire performance of uninsulated and uncoated restrained steel-concrete composite beams supplemented with externally prestressed strands through advanced numerical simulation. In this work, a sequentially coupled thermo-mechanical analysis is carried out using ABAQUS. This analysis utilizes a highly nonlinear three-dimensional finite element (FE) model that is specifically developed and validated using full-sized specimens tested in a companion fire testing program. The developed FE model accounts for nonlinearities arising from geometric features and material properties, as well as complexities resulting from prestressing systems, fire conditions, and mechanical loadings. Four factors are of interest to this work including effect of restraints (axial vs. rotational), degree of stiffness of restraints, the configuration of external prestressed tendons, and magnitude of applied loading. The outcome of this analysis demonstrates how the prestressing force in the external tendons is primarily governed by the magnitude of applied loading and experienced temperature level. Interestingly, these results also show that the stiffness of axial restraints has a minor influence on the failure of restrained and prestressed steel-concrete composite beams. When the axial restraint ratio does not exceed 0.5, the critical deflection of the composite beam is lower than that of the composite beam with a restraint ratio of 1.0.
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참고문헌 (30)
참고문헌 신청
ASTM / 2016 / E119-16 - Standard Test Methods for Fire Tests of Building Construction and Materials / Am. Soc. Test. Mater
BSI, and European Committee for Standardization / 2004 / Design of concrete structures - Part 1-2: General rules - Structural fire design, Eurocode 2
CEN / 2002 / Eurocode 1: Actions on Structures–Part 1–2:General Actions–Actions on Structures Exposed to Fire
Chen, L. / 2013 / Experimental studies on behavior of headed stud shear connectors at elevated temperatures / Tongji Daxue Xuebao/J. Tongji University
Shiming Chen / 2005 / Experimental study of prestressed steel–concrete composite beams with external tendons for negative moments / Journal of Constructional Steel Research 61(12):1613~1630
BSI, and European Committee for Standardization / 2004 / Design of concrete structures - Part 1-2: General rules - Structural fire design, Eurocode 2
CEN / 2002 / Eurocode 1: Actions on Structures–Part 1–2:General Actions–Actions on Structures Exposed to Fire
Chen, L. / 2013 / Experimental studies on behavior of headed stud shear connectors at elevated temperatures / Tongji Daxue Xuebao/J. Tongji University
Shiming Chen / 2005 / Experimental study of prestressed steel–concrete composite beams with external tendons for negative moments / Journal of Constructional Steel Research 61(12):1613~1630
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