Behavior of prestressed and reinforced concrete members under biaxial bending and axial load

ABSTRACTPh. D THESISBEHAVIOR OF PRESTRESSED and REINFORCED CONCRETEMEMBERS UNDER BIAXIAL BENDING and AXIAL LOADSerkan TOKGÖZDEPARTMENT OF CIVIL ENGINEERINGINSTITUTE OF NATUREL AND APPLIED SCIENCESUNIVERSITY OF CUKUROVASupervisor: Prof. Dr. Cengiz DÜNDARYear: 2006 Pages: 259Jury: Prof. Dr. Cengiz DÜNDARProf. Dr. A. Kamil TANRIKULUProf. Dr. Hasan KAPLANAssoc. Prof. Dr. smail H. ÇAĞATAYAssist. Prof. Dr. Seren (AKAVCI) GÜVENIn the presented study, an iterative procedure is proposed for the analysis anddesign of polygonal shaped reinforced, composite and prestressed concrete columnsunder biaxial bending and axial load, and computer programs based on the proposedmethod have been developed. In the proposed method, nonlinear stress−strainrelationships are taken into account and various stress−strain models available in theliterature or experimental stress−strain model can be used for the materials. In theanalysis, slenderness effect of the column is taken into account by using MomentMagnification Method suggested by ACI-318 regulations. In the study, 15 reinforcedconcrete column specimens prepared and tested under biaxial bending and axial loadand analyzed to demonstrate the effectiveness and validity of the proposed method. Ithas been observed that the results obtained with the analysis of the columnspecimens by using developed program are in good agreement with the test results.Besides, some studies available in the literature have been analyzed and seen thatthey are in good agreement with the results presented in the literature.Keywords: Biaxial bending, Reinforced concrete column, Composite column,Prestressed concrete column