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이찬문,최원호,이동근 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
There are various methods that have been recommended for seismic performance of a building structure such as Displacement coefficient Method, Capacity Spectrum Method, Direct Capacity Spectrum Method, Modal Pushover Analysis etc. Evaluation of seismic performance based on the these methods generally used for estimation of seismic deformation capacity and demand of a building structure in the performance based earthquake engineering. In this study, a new improved method of seismic performance evaluation for a high-rise steel moment frame building, which take into account the higher mode effects and accurate inelastic seismic responses, is presented. And the various approaches including the proposed method are carried out for estimating deformation capacity for a high-rise building subjected to various earthquake ground motions and compared with responses such as plastic hinge formations, interstory drifts and energy dissipation etc. of inelastic time history analysis.
PR 접합부를 고려한 철골 모멘트 골조의 시스템 연성요구도 산정
이찬문,최원호,이동근 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
There are various methods that have been recommended for seismic performance of a building structure such as Displacement Coefficient Method, Capacity Spectrum Method, Direct Capacity Spectrum Method, Modal Pushover Analysis etc. Evaluation of seismic performance based on the these methods generally used for estimation of seismic deformation capacity and demand of a building structure in the performance based earthquake engineering. In this study, we can find out that the change of pushover curve considering PH connection and P-Delta effects makes a performance point different, too. Also prediction of system ductility demand for steel moment frame Compare to each system, and Capacity Spectrum Method is used to seismic performance of a building structure.
김찬문(Chan Mun Kim),박순응(Soon Eung Park),지현우(Hyun Woo Ji),우용근(Yong Keun Woo),정혁상(Hyuk Sang Jung) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
본 연구에서는 균열 보수용 재료의 제품별 성능을 평가하기 위해 철도교량 보도부 균열 0.3mm이상의 균열 주입개소에 대해 현장 코어 샘플링 10개소를 시행하여 표면균열, 균열 깊이에 대한 에폭시 충진상태, 균열부의 부착력 등을 분석하는데 있다. 철도차량의 반복하중에 의한 진동 영향 및 계절적 특성을 고려하기 위해 균열보수 후 약 8개월이 경과한 다음 코어링을 실시하였으며 향후 철도교량의 균열 보수재료 선정 및 유지관리를 위한 기초자료로 활용하고자 한다. In this study, the surface cracks, epoxy filled state to the depth of cracks and the adhesion of cracks are analyzed in order to assess the performance of the materials for crack repair. For this, the 10 sites of field core sampling for cracking 0.3mm or more were conducted in the rail bridges crack injection sites. After eight months to repair cracks, the coring was performed to consider the impact of the vibration caused by cyclic loading of vehicle and also seasonality. The results can be used as the basic data for the selection of the crack repair materials and maintenance of the railway bridge in the future.
최찬문 ( Chan Moon Choi ),이창헌 ( Chang Heon Lee ),김병엽 ( Byung Yeob Kim ),안장영 ( Jang Young Ahn ),김석종 ( Seok Jong Kim ),중광율남 ( Ritsuo Shigehiro ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.1
In order to deduce an objective evaluation method of motion seasickness incidence (MSI) by ship motions during underway in irregular waves and to present the fundamental data of passenger comfort on the yacht and the passenger ship according to the result, the MSI of the trainees by the questionnaires was analysed and compared with the rate of variation of salivary α-amylase activity (VSAA) on the training ship A-ra ho of Jeju national university. Relationship between rate of variation (x)by salivary α-amylase activity and motion seasickness incidence (y) was described by the equation, MSI(%) = 0.6073 x +12.189 including the correlation coefficient (R2= 0.9853). The result obtained through the rate of variation of salivary α-amylase activity which was the quantitative evaluation method for ship motions causing seasickness was most affected by z-vertical acceleration and occurred within the frequency range 0.1 to 0.3Hz centered on 0.2Hz, and the simulation result based on this finding showed the motion seasickness rate at approximately 4% lower than the rate obtained through the survey.