http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
폭발 하중에 대한 FRP 재킷 시스템이 보강된 철근콘크리트 기둥 해석 모델 개발
신지욱,Shin, Jiuk 한국공간구조학회 2021 한국공간구조학회지 Vol.21 No.2
This paper aims to develop numerical models for seismically-deficient reinforced concrete columns retrofitted using a fiber-reinforced polymer jacketing system under blast loading scenarios. To accomplish the research goal, a coupling model reproducing blast loads was developed and implemented to the column model. The column model was validated with a past experimental study, and the blast responses were compared to the numerical responses produced by past researchers. The validated modeling method was implemented to the non-retrofitted and retrofitted column models to estimate the effectiveness of the retrofit system. Based on the numerical responses, the retrofit system can significantly reduce the peak dynamic responses under a given blast loading scenario.
FRP 기둥 재킷 시스템이 보강된 지진 취약 철근콘크리트 건축물의 유한요소해석
신지욱,이상열,지동현,Shin, Jiuk,Lee, Sang-Youl,Ji, Dong-Hyun 한국공간구조학회 2021 한국공간구조학회지 Vol.21 No.2
This study develops finite element models for seismically-deficient reinforced concrete building frame retrofitted using fiber-reinforced polymer jacketing system and validates the finite element models with full-scale dynamic test for as-built and retrofitted conditions. The bond-slip effects measured from a past experimental study were modeled using one-dimensional slide line model, and the bond-slip models were implemented to the finite element models. The finite element model can predict story displacement and inter-story drift ratio with slight simulation variation compared to the measured responses from the full-scale dynamic tests.
반응수정계수와 주기의 영향이 고려된 철골모멘트저항골조 건물의 내진성능평가에 관한 연구
신지욱(Shin Ji-Wook),이기학(Lee Ki-Hak),김연태(Kim Yeon-Tae) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
This study was performed to evaluate the effect of Response modification factors (R-factor) and fundamental periods for 3-, 9- and 20- story steel Moment Resisting Frame (MRF) buildings. Each structure was designed using a R-factor of 8, tabulated in 2000 International Building Code provision (IBC 2000) and Korea Building Code (KBC) 2008. In order to determine the maximum and minimum performance expected for structures, an upper bound and lower bound design were considered to each model. Then, each analytical model was designed using different R-factors (8, 9, 10, 11, 12) and four different structural periods with the original fundamental period. A total of 150 analytical models were subjected to 20 ground motions representing the hazard level equal to a 2% probability of being exceeded in 50 years for a detailed case study. To evaluate performance for the structures, the static push-over and non-linear time history analysis (NTHA) were performed and displacement ductility demand was investigated to consider ductility capacity of the structures.
채널형강으로 보강된 비좌굴 Knee Bracing System의 실험과 해석에 대한 연구
신지욱(Shin Ji-Wook),이기학(Lee Ki-Hak),이진(Lee Jin) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)
In this study, the seismic performance of the Buckling Restrained Knee Bracing (BRKB) system was evaluated through a pin-connected 1-bay 1-story frame. The BRKB system developed in this study were composed of a steel plate as a load-resisting core member and two channel sections to restrain local and global buckling of the core plate. The main purpose of the BRKB system is to be used as an effective tool to restrengthen/rehabilitate of old low- and mid-rise RC buildings, which assumed to be designed with non-seismic designs and details. Thus, in this study, computer analysis models of the BRKB system was developed to verify the test results. The seismic performance of the old RC buildings rehabilitated with the BRKB systems was evaluated through the static and dynamic analysis. The result showed that the BRKB systems would be an effective way to rehabilitate/retrofit the old RC buildings.