Analitical models of confined concrete and moment-curvature relationships

In this study, stress-strain concrete models recommended by Modified Kent and Park,Saatcioglu and Razvi and Mander at al presented and evaluated. Implementing the subroutinesdeveloped for the confined concrete model of mander, moment-curvature relationships ofreinforced concrete members are obtained. The affect of the material parameters which theWilliam-Warnke failure criterion adopted by the confinement model of Mander needs, Themoment-curvature relationships of R.C. sections subjected to different axial load levels arepresented using confiment model of Mander at al. For the tested reinforced concrete sections,stress-strain model of Mander is compared by using moment-curvature relationships. Inaddition, the results of the developed computer program are compared with the results ofXTRACT program for a wide range of axial load levels and cross-sections.Keywords: Confined concrete Models, Willam-Warnke failure criterion, moment-curvaturerelationships.