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Abstract
Samsung Co. Ltd., Sungnam 463-721, KoreaABSTRACT The moment redistribution in continuous reinforced concrete beams is very feasible phenomenon, by which the effi-ciency and the economy in designing reinforced concrete members can be enhanced. However, to understand the structural behaviorby moment redistribution phenomenon, it is desirable to verify its mechanism experimentally considering tension stiffening effect,the relationship of moment redistribution and beam deflection, crack pattern, and effective stiffness. Six reinforced concrete con-tinuous beam specimens were fabricated, and each specimen had a dimension of 250 mm × 350 mm and 7,000 mm long. The loca-tion of de-bonding was taken as the primary test parameter to investigate tension stiffening effect. The moment redistribution ratioof the specimens was different depending on the position of de-bonding, and in particular no moment redistribution was observedwhen de-bonding exist at both ends, the maximum negative moment region and the maximum positive moment region. Keywords : continuous beam, moment redistribution, tension stiffening effect, maximum crack width, crack spacing
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