노후 교량 직접기초의 내진성능에 관한 연구: 한계 상태 분석

초록

Scour, carbonation, crack due to aging cause the reduction of elastic modulus of shallow foundation and it can reduce the seismic performance significantly. Thus, intensive analysis on the seismic performance of shallow foundation due to aging is necessary because stress can be concentrated at the joint between column and foundation during earthquake. In this study, limit state is defined based on the shear strain, tensile stress, and compressive stress at the joint considering the elastic modulus reduction due to aging and earthquake loading.