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압축철근에 따른 순환 R/C보의 장기처짐에 관한 실험적 연구
윤승조 ( Yoon Seung-joe ),서수연 ( Seo Soo-yeon ),이우진 ( Lee Woo-jin ),김태호 ( Kim Tae-ho ),김대영 ( Kim Dae-young ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.2
The aim of this study is to evaluate the instant and long-term deflection of reinforced concrete beam made of recycled coarse aggregate. Test specimens are designed to have various compression steel ratio. The uniform load is applied to the specimen according to the ACI’ loading criteria to avoid the arching action. Test results were compared with the predicted deflection by ACI code, Branson's formula and Mayer’s. As a result, it was found that the predicted result by ACI and Mayer’s formula are similar to test value in both immediate elastic deflection and long-term deflection. The deflection of test specimen decreased when the compression steel ratio increased.
전단보강재 형태에 따른 플랫플레이트 슬래브-기둥 내부접합부의 뚫림전단강도 성능 평가
윤승조 ( Yoon Seung-joe ),서수연 ( Seo Soo-yeon ),윤용대 ( Yoon Yong-dae ),이우진 ( Lee Woo-jin ),양충모 ( Yang Chung-mo ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.1
The research manufactured test objects of four types (I, J, SR, C) of shear reinforcement bar in order to verify punching shear behavior at a connecting part between slab and column at a typical office building: seven-story building that is 4.2m high in the first floor and 3.6m high from second to seventh floor. The research experiments punching shear behavior at slab-column connecting part under static forging load to evaluate the shear performance.
손상된 철근콘크리트 슬래브에 보강된 하이브리드 모르타르의 휨 보강 효과에 관한 연구
윤승조(Yoon, Seung-Joe),채문기(Chae, Moon-Gi),허승웅(Ho, Seung-Woung) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.1
This study conducted an experiment to verify the flexural reinforcement effect based on the state of damage by reinforcing damaged reinforced concrete slabs with hybrid mortar, in order to ascertain the effect of reinforcement construction methods verified to improve the strength of the structure and noise between floors on actual buildings. The method of experiment was conducted based on the “2017 Safety Inspection and Precise Safety Diagnosis Guidelines” of the Korea Infrastructure Safety and Technology Corporation, and the damage on the actual specimen was determination based on the displacement value occurring on the specimen.
하이브리드 모르타르로 보강된 철근콘크리트 슬래브의 두께에 따른 휨 강도에 관한 연구
윤승조(Yoon, Seung-Joe),채문기(Chae, Moon-Gi),이성로(Lee, Seong-Ro),허승웅(Ho, Seung-Woung) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.1
This study proposes a construction method reinforcing with hybrid mortar using Ethylene-Vinyl Acetate Copolymer (EVA) used as an environmentally friendly noise reduction material in Korea and other countries, POSS nano complex (Polyhedral OligomericSilses-quioxaneS) and wire mesh. The final form of destruction, performance against force, strength, malleability were evaluated based on the flexural compression, a calculation equation of the slab reinforced with wire mesh and composite mortar was analyzed by comparing the values of the experiment and the values of the calculation equation proposed by existing theses.