지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.13 No.6
- 발행연도
- 2012.1
- 수록면
- 521 - 537 (17page)
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초록· 키워드
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In this study, an experimental study is performed to understand the effect of spalling on the structural behavior of fire damaged steel reinforced high strength concrete (SRHSC) columns, and the test results of temperature distributions and the displacements at elevated temperature are analyzed. Toward this goal, three long columns are tested to investigate the effect of various test parameters on structural behavior during the fire, and twelve short columns are tested to investigate residual strength and stiffness after the fire.
The test parameters are mixture ratios of polypropylene fiber (0 and 0.1 vol.%), magnitudes of applied loads (concentric loads and eccentric loads), and the time period of exposure to fire (0, 30, 60 and 90 minutes). The experimental results show that there is significant effect of loading on the structural behaviors of columns under fire. The loaded concrete columns result more explosive spalling than the unloaded columns under fire. In particular, eccentrically loaded columns are severely spalled. The temperature distributions of the concrete are not affected by the loading state if there is no spalling. However, the loading state affects the temperature distributions when there is spalling occurred. In addition, it is found that polypropylene fiber prevents spalling of both loaded and unloaded columns under fire. From these experimental findings, an equation of predicting residual load capacity of the fire damaged column is proposed.
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등록된 정보가 없습니다.
참고문헌 (23)
참고문헌 신청
Ahmed, G. / 1999 / Modeling pore pressure, moisture, and temperature in high strength concrete columns exposed to fire / Fire Technology 35(3):232~262
Ali, F. / 2010 / Numerical and experimental investigation of the behavior of high strength concrete columns in fire / Eng. Struct. 32(5):1236~1243
Cheng, F. P. / 2004 / Stress-strain curves for high strength concrete at elevated temperatures / Journal of Materials in Civil Engineering 16(1):84~90
Joonho Choi / 2010 / Integrated fire dynamics and thermomechanical modeling framework for steel-concrete composite structures / Steel and Composite Structures, An International Journal 10(2):129~149
Chowdhurya, E. U. / 2007 / Investigation of insulated FRPwrapped reinforced concrete columns in fire / Fire Safety Journal 42(6-7):452~460
Ali, F. / 2010 / Numerical and experimental investigation of the behavior of high strength concrete columns in fire / Eng. Struct. 32(5):1236~1243
Cheng, F. P. / 2004 / Stress-strain curves for high strength concrete at elevated temperatures / Journal of Materials in Civil Engineering 16(1):84~90
Joonho Choi / 2010 / Integrated fire dynamics and thermomechanical modeling framework for steel-concrete composite structures / Steel and Composite Structures, An International Journal 10(2):129~149
Chowdhurya, E. U. / 2007 / Investigation of insulated FRPwrapped reinforced concrete columns in fire / Fire Safety Journal 42(6-7):452~460
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