Three dimensional analysis of reinforced concrete frames using rigid diaphragm model with beams in a cracked state

In this study, a computer program has been developed using rigid diaphragm model for the three dimensional analysis of reinforced concrete buildings with beams in cracked state. In the frame analysis cracking is considered only for beam elements, hence, linear elastic stiffness equation is used for columns. Also a computer program for the two dimensional analysis of reinforced concrete frame with columns in cracked state in addition to beams using ACI and CEB models for the the effective moment of inertia. In the analysis, shear deformations are taken into account and reduced shear stiffness is considered by using effective shear modulus models available in the literature. Finally, some problems available in the literatüre are solved by the program and results are found to be in good agreementKeywords: Reinforced concrete frames, rigid diaphragm model, effective moment of inertia, effective shear modulus, deflections