EFFICIENT MODELING METHOD FOR LARGE NUMBER OF REINFORCED CONCRETE VIADUCTS BASED ON SENSIBILITY ANALYSES REGARDING NONLINEAR RESPONSE CHARACTERISTICS

Abstract

 Railway structures continuously exists in a long section of the railway line, so there is a possibility that the performance of the entire railway may be impaired by an earthquake even if the seismic damages are local. Therefore, it is important to extract the weak points by evaluating seismic capacity of the entire railway structures. Authors have developed the earthquake disaster simulator which can simulate seismic response analyses of the entire railway structures. However, it takes a lot of time and cost in order to model large number of structures in accordance with the seismic design. In this paper, we have established several analytical models of reinforced concrete viaducts which have been different from the models in accordance with the seismic design, and conducted sensibility analyses regarding nonlinear responses obtained by push over analyses. As a result, we have clarified the efficient modeling method for large number of reinforced concrete viaducts.