Dynamic Test Study on Damage Detection of Reinforced Concrete Beams

摘要

RC beams dynamic test is performed in order to find the relations between the dynamic features and the damage in this paper. In the experiment, the excitation is done by impacing the beam with an aluminum hammer,simply-supporting conditions are made to restrict vertical displacements, the support vibration effects on the dynamic test results is eliminated. Dynamic characteristic variations of three uncracked beams and two cracked beams are recorded under increasing static loadsteps, relations of RC beam capacity versus frequency are demonstrated. Dynamic features such as frequency and mode of uncracked beam and cracked beam are studied.