CHARACTERISTIC ANALYSIS OF INTERIOR JOINTS OF RC FRAME WITH DIFFERENT DEPTH BEAMS

According to the experimental investigation on ten specimens of interior joints with different depth beams under low cyclic reversed loading,the failure process and failure patterns were obtained.The experimental study was conducted that focused on the effect of vertical beam depth eccentricity on seismic behavior of the joint.Test results indicated that vertical beam depth eccentricity had an obvious effect on seismic behavior of the beam-column subassemblage.With the increasing of vertical beam depth eccentricity,the shear force of the joint increased gradually until reached its peak,and then decreased gradually;when vertical beam eccentricity was greater than the column section height,an exterior joint model would be better for this case analysis.According to the relative relation between the height of column and the vertical depth eccentricity of beam,the abnormal joints can be divided into two types,and the suggested formulas for characteristic calculation of the joints are also put forward.