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건식커플러를 활용한 PC부재 접합기술의 적용현장에 대한 고찰
박제영 ( Park Je-young ),문형재 ( Moon Hyung-jae ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
This paper confirms the application sites of dry coupler technology, which is a direct connection method using screw threads, and Unlike wet couplers, this method can stand on its own without proof support and continuous work on the upper part. Furthermore, concludes with personal considerations to improve constructability.
충전성을 개선한 각형CFT구조의 기둥-보 접합부 구조적 거동
박제영(Park, Je-Young),이명재(Lee, Myung-Jae) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.11
Concrete-Filled Tube is a concrete-filled steel tube structure. Steel tube confines the concrete to increase the compressive strength, and the concrete contains the buckling of the tube. CFT structures require a diaphragm to prevent buckling of steel at connections. An outer diaphragm has better concrete filling than a through diaphragm due to a large bore, but being larger than the through diagram, it has poorer constructability and cooperation with building equipment. In this study, a rectangular CFT structure that uses different types of diaphragms in its upper and lower connections to improve the concrete filling was tested and analyzed via the FEM program. The building structure had a floor slab that was unified with the upper diaphragm, so the outer diaphragm was placed at the upper bound. Moreover, the through diaphragmwas placed at the lower connection to avoid obstruction frombuilding equipment. The CFT structure with the improved concrete filling showed the same structural behavior as the CFT structure with the use of the same type of diaphragms at the upper and lower connections.
김운태,박제영,김병무,남원우,손병청 ( Woon Tai Kim,Jae Young Park,Byoung Moo Kim,Won Woo Nam,Byoung Chung Sohn ) 한국유화학회 1996 한국응용과학기술학회지 Vol.13 No.2
Diazotization of STA synthesized by the indirect diazotization method. The effect of catalyst and agitation (rpm) about STA and H-acid reaction were examined and the optimum conditions were investigated experimentally. The yields and characteristics of 1^.st coupling and diazotization synthesis were identified by HPLC and FT-IR analysis. 1^.st condensation of CNC and mPDSA were synthesized at 5℃ and pH=6.5. The conditions of alkaly coupling of H-acid were synthesized at 5℃ and pH=8. The condensation of products was identified by U. V. analysis. From this results, It was obtained to reactive dyestuffs of bi-functional reactivity with high fastness and high adsorption.