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김유경 ( Kim Yu Kyung ),김동환 ( Kim Dong Hwan ),김형만 ( Kim Hyung Man ),김형국 ( Kim Hyeong Gook ),김상우 ( Kim Sang Woo ),김길희 ( Kim Kil Hee ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
This paper presents the seismic performance of the steel damper under reversed cyclic loading. The U-shaped steel damper used in this study was designed to have energy dissipation zone with an external diameter of 120 mm, a width of 15 mm, and a thickness of 15 mm. The cyclic loading test was carried out using an uniaxial universal testing machine with a capacity of 2,000 kN. The test results indicated that no strength deterioration of the specimen was found as well as the equivalent damping ratio of the specimen was excellent.
횡보강근의 배근형상에 따른 철근콘크리트 기둥의 휨 성능 평가
김민준(Kim Min-Jun),김동환(Kim Dong-Hwan),김대훈(Kim Dae-Hoon),김상우(Kim Sang-Woo),이정윤(Lee Jung-Yoon),김길희(Kim Kil-Hee) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.5
This study estimates the flexural performance of reinforced concrete (RC) columns subjected to reversed cyclic lateral loading. The main experimental variables were designed to have the configuration and yield strength of transverse reinforcement. H-type specimens with rectangular ties and S-type specimens with spirals having rectangular and octagonal shapes were cast and tested in this study. Furthermore, the specimens were designed to be subjected to anti-symmetric moment. The experimental results indicated that the specimens with S-type transverse reinforcement showed higher ductility and energy dissipation capacity than the specimens with H-type even though the amount of transverse reinforcing bar of S-type specimens had less than half that of H-type specimens.
김두산 ( Kim Doo-san ),김동환 ( Kim Dong-hwan ),김민준 ( Kim Min-jun ),이용준 ( Lee Yong-jun ),김형국 ( Kim Hyeong-gook ),김길희 ( Kim Kil-hee ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
In this study, an experiment was conducted to evaluate the behavior of fiber reinforced concrete beam according to GFRP(Glass Fiber Reinforced Polymer)sheets and based on previous specimens and directly compare the fiber reinforcing effect. As a result, all specimens, regardless of the cross section shape, had an increase in torsional capacity and similar behavior compared to previous study.