UTILIZATION OF THE INFLUENCE LINE OF DISPLACEMENT TO IDENTIFY A DECLINE IN THE STIFFNESS OF BEAMS

Abstract

The purpose of this work is to offer a method for detecting structural damage utilizing the standardized index of the beam’s deflection influence line difference as input data for the evaluation procedure. The displacement influence line used in the evaluation is calculated using the findings of the behavior analysis of the reinforced concrete beam’s finite element model when subjected to a moving load. SAP2000 software is used to simulate reinforced concrete beams. The mobile load is then assigned to move along the beam from its starting position to its ending position. For each mobile load example, the displacement at each survey node will be output to draw the influence line. The displacement analysis of the beams is compared before and after assuming damage for each mobile load instance in order to determine the location of the stiffness drop. From then, the findings of beam damage diagnosis are reviewed and evaluated, as well as the methods’ practicality in real implementations.