손상특성을 고려한 콘크리트 구조물의 손상모형 연구

초록

A new damage model employing damage characteristics, such as crack orientation and crack depth, is proposed in this study. The validity of the proposed model is performed by comparing the model with the experimental data available. As a result, it is proved that the proposed model is more accurate and convenient than the conventional models in which the damaged area, stiffness and second moment of inertia are the parameters being used. The proposed model is finally applied to a prestressed concrete (PSC) box structure which has been used in Korea Highspeed Rail (KHR) route. From the parametric studies, it is concluded that the proposed model can be effectively used to simulate the dynamic behavior of the damaged concrete structure where the depth, orientation and position of the damages are the major parameters concerned.