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논문 기본 정보

자료유형
학술저널
저자정보
Piyasena, R. (School of Engineering, Griffith University-Gold Coast Campus) Loo, Yew-Chaye (School of Engineering, Griffith University-Gold Coast Campus) Fragomeni, Sam (School of Engineering, Griffith University-Gold Coast Campus)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제15권 제2호
발행연도
2003.1
수록면
159 - 180 (22page)

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In this paper spacing and width of flexural cracks in reinforced concrete beams are determined using two-dimensional finite element analysis. At early loading stages on the beam the primary crack spacing is based on the slip length, which is the development length required to resist the steel stress increment that occurs at a cracked section on the formation of the first flexural crack. A semi-empirical formula is presented in this paper for the determination of the slip length for a given beam. At higher load levels, the crack spacing is based on critical crack spacing, which is defined as the particular crack spacing that would produce a concrete tensile stress equal to the flexural strength of concrete. The resulting crack width is calculated as the relative difference in extensions of steel reinforcement and adjacent concrete evaluated at the cracked section. Finally a comparative study is undertaken, which indicates that the spacing and width of cracks calculated by this method agree well with values measured by other investigators.

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