RC Beam Pure Bending Plastic Hinge Parameter Calculation Considering Size Effect and Experimental Research

In order to study the influence of different loadsand cross section size on RC beam plastic hinge, a total of 13 reinforced concrete beamswith 5 section sizeswere tested under monotonic loading, and the calculation of pure bending plastic hinge parameters considering size effect isstudied based on experimental data.The results show that the plastic rotation capacity of plastic hinge zone exists significant size effect, and a way to calculate inelastic curvature and inelastic equivalent corner is put forward, measured data and calculated results are in good agreement.