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축력과 반복 횡력을 받는 초고강도 RC 띠철근 기둥의 횡보강근의 구속 효과
김대용(Kim Dai-Yong),김종근(Kim Jong-Keun),안종문(Ahn Jong-Mun),신성우(Shin Sung-Woo) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)
An experimental investigation was conducted to examine the hysteretic behaviors of ultra-high strength concrete R/C tied columns. The purpose of this study is to investigate the confinement effect on transverse reinforcement of ultra-high strength concrete columns with 100 ㎫ compressive strength. Columns were fabricated to simulate an 1/2 story of actual structural members and to loads actual lateral forces. The main variables are axial load ratio, the configurations and volumetric ratios of transverse reinforcement. The results show that the confinement effect of core concrete are affected by the configurations and volumetric ratios of transverse reinforcement with axial load level. Therefore, to secure the ductile behavior of 100 ㎫ ultra-high strength concrete columns, the amount of transverse reinforcement may be considered with axial load level and the details of transverse reinforcement.