Experimental Study on Reinforced Concrete Double Legs Column under High Axial Load

Abstract

The load-deflection hysteretic behavior of four reinforced concrete double legs column under high compressive stress and cyclic horizontal loading are studied. The behavior of these specimens subjected to combined high axial compression, flexural moment and shear forces is described in terms of type of cracking and mode of failure, strengh and ductility. The main variables in this test are shape and number of tied beam in double legs column. Simple analysis of direct stiffness method which predict the stiffness and strength of frame under eccentric compression and shear loading is applied to these test specimens.