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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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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.30 No.6
- 발행연도
- 2019.1
- 수록면
- 535 - 550 (16page)
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초록· 키워드
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Prestressed concrete (PC) bridges using corrugated steel webbing have emerged as one of the most promising forms of steel-concrete composite bridge. However, their long-term behavior is not well understood, especially in the case of largespan bridges. In order to study the time-dependent performance, a large three-span PC bridge with corrugated steel webbing was compared to a similar conventional PC bridge to examine their respective time-dependent characteristics. In addition, a threedimensional finite element method with step-by-step time integration that takes into account cantilever construction procedures was used to predict long-term behaviors such as deflection, stress distribution and prestressing loss. These predictions were based upon four well-established empirical creep prediction models. PC bridges with a corrugated steel web were observed to have a better long-term performance relative to conventional PC bridges. In particular, it is noted that the pre-cambering for PC bridges with a corrugated steel web could be smaller than that of conventional PC bridges. The ratio of side-to-mid span has great influence on the long-term deformation of PC bridges with a corrugated steel web, and it is suggested that the design value should be between 0.4 and 0.6. However, the different creep prediction models still showed a weak homogeneity, thus, the further experimental research and the development of health monitoring systems are required to further progress our understanding of the long-term behavior of PC bridges with corrugated steel webbing.
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참고문헌 (41)
참고문헌 신청
AASHTO / 2010 / AASHTO LRFD bridge design specifications
ACI Committee 209 / 2011 / ACI2092R-08 Prediction of creep, shrinkage, and temperature effects in concrete structure / American Concrete Institute
Bažant, Z. P. / 1995 / Creep and shrinkage prediction model for analysis and design of concrete structures–model B3 / Mater. Struct 28(6):357~365
Bažant, Z. P. / 2011 / Pervasiveness of excessive deflections of segmental bridges : wake-up call for creep / ACI Struct. J 108(6):766~774
Bažant, Z. P. / 2012 / Excessive long-time deflections of prestressed box girders. I : record-span bridge in Palau and other paradigms / J. Struct. Eng 138(6):676~686
ACI Committee 209 / 2011 / ACI2092R-08 Prediction of creep, shrinkage, and temperature effects in concrete structure / American Concrete Institute
Bažant, Z. P. / 1995 / Creep and shrinkage prediction model for analysis and design of concrete structures–model B3 / Mater. Struct 28(6):357~365
Bažant, Z. P. / 2011 / Pervasiveness of excessive deflections of segmental bridges : wake-up call for creep / ACI Struct. J 108(6):766~774
Bažant, Z. P. / 2012 / Excessive long-time deflections of prestressed box girders. I : record-span bridge in Palau and other paradigms / J. Struct. Eng 138(6):676~686
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