교량 지진취약도 분석을 위한 기초의 스프링 강성 산정에 대한 고찰

초록

Soil-structure interaction has been pointed as an important issue affecting on the seismic behaivor of bridge foundation. Seismic fragility curve can be derived from the dynamic analylsis. However, the dynamic analysis method has not been well defined: The bridge foundation can be simulated with structural element or can be simplified as equivalent linear elastic spring with 6 degree of freedom or can be simplified as fixed end. Thus, in this study, the effect of stiffness of bridge foundation on the fragility curve is examined.