교량의 하부구조 배치에 따른 내진성능

Abstract

‘Roadway Bridge Design Criteria’ requires both serviceability and no collapse of bridges as the basic design concept of the earthquake resistant design requiring particular performance under earthquakes. Also, the response spectrum method generally used in the earthquake resistant design is a linear method, the nonlinear behavior of a structure is to be reflected with a specific factor. Such factors are provided in the ‘Roadway Bridge Design Criteria’ and ‘AASHTO’ as response modification factor(R) and in the Eurocode as behavior factor. For bridges, the response modification factors are given according to type of pier. But, there is no rule of response modification factor for regular bridge and irregular bridge. In this study, a bridge with T-type piers is selected and analysed according to the earthquake resistant design provisions. To propose, regular bridge and irregular bridge, what have an effect on response modification factor.