Transformed Section Method to Calculate Stress of R.C. Box Beams Considering Shear Lag

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The tensile and compression performance and shear performance should not be changed when using variation principle to analyze shear lag of box beams. So based on transformed-section method, the section composed with steel and concrete can be transformed to one section made of supposing material. The shear lag of supposing section is analyzed to calculate the distribution of normal stress, then according to the constitutive relation of steel and concrete, the stress of actual section can be obtained. At last, the formula of normal stress in flange slab for reinforced concrete box girder is given.

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732-736

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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