고인성 섬유복합체 적용 철근콘크리트 기둥을 고려한 골조 구조물의 내진성능평가

Abstract

The shortcoming of brittleness of concrete could be improved by applying fibers mixed into the cement mortar which was called the High Performance Fiber Composites(HPFC). Applying the HPFC on the flexural critical region, reinforced concrete columns could be seismically improved in flexural and shear strength as well as deformation capacities. In this study, a procedure of seismic performance based design for reinforced concrete columns applying the HPFC is introduced basically with the concept of Direct Displacement Based Design(DDBD). Seismic performance evaluation methods for Single Degree of Freedom(SDOF) and Multi Degree of Freedom(MDOF) systems considering developed columns are compared with three methods, Capacity Spectrum Method(CSM), Direct Displacement Based Design(DDBD) and Displacement Coefficient Method(DCM), in order to predict rational seismic performances of the systems. In examples about SDOF and MDOF systems, frame structures considering reinforced concrete columns using HPFC are good results in the improvement of shear and flexural strength as well as displacement capacities.