An Applicability of Equivalent Cracking Energy Concept for Impact Response Analysis of RC Girders

Here, in order to establish a modification method for material properties of concrete so as to rationally analyze using coarse mesh, an equivalent fracture energy concept for concrete elements is proposed and the applicability was conducted comparing numerical analysis results with experimental results of falling weight impact loading test. From this study, it is confirmed that even though coarse mesh was used for prototype RC girder, similar results with those obtained using fine mesh can be assured and those results are in good agreements with the experimental ones