Abstract
In order to establish a rational verification method for each limit state for impact resistant RC structures, not only experimental study but also numerical analysis study should be conducted. However, it is not easy to numerically analyze large scale RC structures under impact loading. 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 was proposed and the applicability was conducted comparing numerical analysis results and experimental results. From this study, it was 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 were in good agreements with the experimental ones.
