DISPLACEMENTS AT SHEAR CRACK IN BEAMS WITH SHEAR REINFORCEMENT UNDER STATIC AND FATIGUE LOADINGS

Abstract

Reinforced concrete beams with vertical or inclined, and plain and/or deformed stirrups of various reinforcement ratios and diameters are tested under static and repeated loadings. Opening and shearing displacements along shear cracks as well as stirrup strains and concrete deformations along stirrups are measured. Effects of bond characteristics, ratio and diameter of stirrup on stirrup slip and crack displacement in the direction of stirrup are revealed. Based on the test results, a method to predict opening displacement of shear crack under static and fatigue loadings is presented. It is found that the predicted values agree with the test results.