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하니컴(다각)형 복합체 시스템으로 보강한 RC 조적끼움벽체의 내진성능평가
김종근,서철호,안종문,신성우,Kim, Jong-Keun,Seo, Chul-Ho,Ahn, Jong-Moon,Shin, Sung-Woo 대한건축학회 2011 대한건축학회논문집 Vol.27 No.12
This study conducted an experiment on seismic retrofitting in order to improve seismic performance of RC framed structures of non-earthquake resistant designs. In the experiment, masonry infill walls were strengthened with composite precast concrete(PC) panel systems using honeycomb-type reinforcements. Structural analysis was conducted with actual structures, and a single span which was found to be in need of seismic retrofitting was scaled down by 1/2 ratio and was modeled. The specimens were of 6 different types, including the reference specimen of an RC frame designed to be non-earthquake resistant. The 6 types were divided by whether there was reinforcement on the masonry infill wall and how to retrofit the wall with the honeycomb composite panel system. The experiment results showed that seismic performance of the test specimens increased in all the factors including strength, stiffness, ductility and energy dissipation, so it was considered that retrofitting measures need to be taken to secure proper seismic performance. When seismic performance was evaluated, the target of strength and ductility was set as 30% increase. Since all the specimens were found to meet the target, it was considered proper to retrofit masonry infill walls with PC panels.
하니컴(다각)형 복합체 시스템으로 보강한 RC 조적끼움벽체의 내진성능평가
김종근(Kim, Jong-Keun),서철호(Seo, Chul-Ho),안종문(Ahn, Jong-Moon),신성우(Shin, Sung-Woo) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.12
This study conducted an experiment on seismic retrofitting in order to improve seismic performance of RC framed structures of non-earthquake resistant designs. In the experiment, masonry infill walls were strengthened with composite precast concrete(PC) panel systems using honeycomb-type reinforcements. Structural analysis was conducted with actual structures, and a single span which was found to be in need of seismic retrofitting was scaled down by 1/2 ratio and was modeled. The specimens were of 6 different types, including the reference specimen of an RC frame designed to be non-earthquake resistant. The 6 types were divided by whether there was reinforcement on the masonry infill wall and how to retrofit the wall with the honeycomb composite panel system. The experiment results showed that seismic performance of the test specimens increased in all the factors including strength, stiffness, ductility and energy dissipation, so it was considered that retrofitting measures need to be taken to secure proper seismic performance. When seismic performance was evaluated, the target of strength and ductility was set as 30% increase. Since all the specimens were found to meet the target, it was considered proper to retrofit masonry infill walls with PC panels.
RC 플랫 플레이트 슬래브의 뚫림전단성능에 관한 실험적 연구
김종근 ( Kim Jong-keun ),안종문 ( Ahn Jong-moon ),신성우 ( Shin Sung-woo ),박성식 ( Park Sung-sik ),이범식 ( Lee Bum-sik ),양지수 ( Yang Ji-soo ) 한국구조물진단유지관리공학회 2002 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.6 No.1
The primary purpose of this study is to investigate punching shear capacity of flat plate slab using high strength concrete in column. It may be much contributed to economy efficiency and structural advantages that High Strength Concrete used for vertical member and Normal Strength Concrete for horizontal member. Therefore, Six flat slab specimens with HSC column and NSC slab had been made and tested with real scale. The major variables were compressive strength of concrete(f<sub>ck</sub> = 240, 500kgf/cm<sup>2</sup>), extended length from column face ℓ<sub>d</sub> = 0, d/2, 2d. 60cm) and amount of shear reinforcements. As the result of this test, the following conclusions are shown that the maximum load and behavior of specimens is affected by extended length and shear reinforcements.
김형섭(Kim Hyung-Sup),안종문(Ahn Jong-Moon),이광수(Lee Kwang-Soo),신성우(Shin Sung-Woo) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Recently, domestic buildings are becoming more diverse and special with the changes of times and culture. the study has been investigated with increasing emphasis on the composite beam system in variable methods. The purpose of this study is to present the evaluation method for the deflection of the partially composite members. To achieve this purpose, concrete thickness and the amount of shear stud were selected as test variables, and 7 specimens were manufactured and tested under two points static load. Test Results as followings, 1) as the distance of concrete thickness is increased that of neutral axis is increased, 2) moment of inertia for partially composite members can be exactly calculated by neglecting the lower concrete area of the neutral axis.
김형섭 ( Kim Hyung-sup ),안종문 ( Ahn Jong-moon ),이광수 ( Lee Kwang-soo ),신성우 ( Shin Sung-woo ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.1
Recently, domestic buildings are becoming more diverse and special with the changes of times and culture, the study has been investigated with increasing emphasis on the composite beam system in variable methods. The purpose of this study is to present the evaluation method for the deflection of the partially composite members. To achieve this purpose, concrete thickness and the amount of shear stud were selected as test variables, and 7 specimens were manufactured and tested under two points static load. Test Results as followings, 1) as the distance of concrete thickness is increased that of neutral axis is increased, 2) moment of inertia for partially composite members can be exactly calculated by neglecting the lower concrete area of the neutral axis.
이한구 ( Lee Han-gu ),유석형 ( Yoo Suk-hyeong ),안종문 ( Ahn Jong-moon ),신성우 ( Shin Sung-woo ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
This study discuss the experimental results and presents analytical results to predict stress and deformations of RC beams strengthened with epoxy-bonded GFRP or CFRP laminate. In the case of RC beams strengthened with GFRP or CFRP laminate, the beams which have variables such as strengthening length, strengthening width, strengthening thickness, are analyzed by a nonlinear analysis program, TOTAL-RC, and ultimate strength, ductility and failure modes of RC beams strengthened with GFRP or CFRP laminate are observed. The nonlinear analysis can reasonably approximate the behavior of RC beams reinforced with GFRP or CFRP laminate. As results, ultimate strength of beams with CFRP are better than those of GFRP, whereas ductility effects of GFRP are better than those of CFRP. The failure mode of RC beams strengthened with GFRP is shown to be interfacial debonding failure, whereas the one of RC beams strengthened CFRP is shown to be the rip-off failure.