Prediction of Flexural Deformation of a Corroded RC Beam with a Polynomial Tension-Stiffening Model

AbstractA new model is proposed by an assumption of quartic polynomial function to simulate the relative slip of steel bar and surrounding concrete in RC tensile member. In the new model, the postcracking behavior with a tension-stiffening effect is considered. Through the extension of the new model...

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Published inJournal of structural engineering (New York, N.Y.) Vol. 139; no. 6; pp. 940 - 948
Main Authors Yang, Shu-Yan, Liu, Xi-La, Leng, Yu-Bing
Format Journal Article
LanguageEnglish
Published American Society of Civil Engineers 01.06.2013
Subjects
Bending
Corrosion
Mathematical models
Polynomials
Reinforced concrete
Reinforcing steels
Slip
Structural steels
Technical Papers
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Summary:AbstractA new model is proposed by an assumption of quartic polynomial function to simulate the relative slip of steel bar and surrounding concrete in RC tensile member. In the new model, the postcracking behavior with a tension-stiffening effect is considered. Through the extension of the new model, the relative slip of the perfectly bonded interface of RC bending member can also be determined, based on which an interpolating function can be introduced to study the relative slips under different bending moments for corroded RC bending members. Finally, two experimental results of corroded RC beams under four-point bending are used to verify the new models.
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ISSN:0733-9445
1943-541X
DOI:10.1061/(ASCE)ST.1943-541X.0000704