STRUT-AND-TIE MODELS FOR DEFORMATION OF REINFORCEDCONCRETE BEAM-COLUMN JOINTS DEPENDENT ON PLASTICHINGE BEHAVIOR OF BEAMS

摘要

This paper presents a strut-and-tie model for evaluating deformation of reinforced concrete interior beamcolumnassemblages limited by shear failure of joint region. The effect of plastic hinge deformation ofbeams on shear strength of joint region is defined in terms of bond deterioration and softening of concretecompression. The strength and the limited deformation calculated by the proposed model are comparedwith available test results, showing good agreement. Since this proposed model depicts the stress flow notat ultimate, but at a required deformation level selected by practitioner, it can provide a clearerunderstanding of the relationship between the response of beam-column assemblages and the strength ofthe joint regions.