DEVELOPMENT OF REINFORCED CONCRETE FLAT BEAM SYSTEM

Abstract

A RC flat beam allows considerable latitude in building if the beam and a normal column can be used in rigid frame construction. There are some fears about RC flat beam and column joint system, whether stress can be transmitted well between the beam and the column, whether bond of longitudinal bars of the column is sufficient in beam-column joint. Additional reinforcements to strengthen beam end, which shifted plastic hinge of the beam at a distance from column surface, more lateral confinements in connection, and spliced lapping bars of column at joint were adopted. Seven RC flat beam and column joint specimens were prepared for cyclic loading tests to examine above measures. As results, it can be said that RC flat beam and column joint system is possible.