시간영역에서의 교량 강성행렬 및 감쇠행렬의 추정에 관한 연구

초록

In this paper, a structural damage identification technique is proposed to evaluate the performance of bridges. For this, a computer program is developed to identify the global stiffness and damping matrices of bridge. It is shown that the proposed model is capable of identifying structural parameters with the limited information, which is the main advantage over the conventional approaches where all the input forces are necessary to identify structural parameters. Three numerical examples on typical bridge structures are introduced to verify the applicability of the proposed model. Here, the free vibration of the structures are considered as force constraints of the model and the results show that the damages as well as structural parameters can be explicitly calculated with the proposed model.