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크리프 및 건조수축을 고려한 PSC 교량의 시간의존해석
박문호(Moon-Ho Park),박순응(Soon-Eung Park),김진규(Jin-Kyu Kim),박정활(Jung-Hwal Park),김복남(Bok-Nam Kim),이승엽(Seung-Yup Lee) 한국산업융합학회 2010 한국산업융합학회 논문집 Vol.13 No.3
This study is to give more accurate information by performing the time depend ent analysis to take into account the long-term losses of precast PSC concrete bridge and analyzing the second stress, final camber and cross section stress of precast PSC caused by creep and drying shrinkage. As time goes by, the stress and deformation in the cross section vary continuously by the influence of creep and drying shrinkage. Due to this, the stress redistribution occurs and the internal force variation also happens along the point on the same cross section and with the passage of time.
박문호(Moon-Ho Park),박정활(Jung-Hwal Park),김진규(Jin-Kyu Kim) 한국산업융합학회 2001 한국산업융합학회 논문집 Vol.4 No.2
The purpose of this study is to examine the accuracy of the code provisions on lateral load distribution factors of prestressed concrete girder bridges. Most designers in Korea use the lever method or lateral load distribution formula in the existing design codes. However, the methods do not account for the effect of bridge skew or direction of diaphragm. Therefore, this study analysed the prestressed concrete girder bridge with grillage model for various girder spacings, directions of diaphragms, span lengths, and skews, and compared the results with those of existing design code. It has been found that lateral load distribution factors were proportional to the girder spacing while they were not significantly affected by the change of span length, direction of diaphragm, and skew. For bending moments, lateral load distribution factors from the grillage analysis were 60%~68% of those from Korean bridge design code. Therefore, the code provisions result in very conservative design. For support reactions, however, lateral load distribution factors from the grillage analysis were slightly greater than those from Korean bridge design code. Therefore, the capacity of bearings of the bridge with a large skew should be determined by grillage analysis.<br/>
김기욱(Kim Ki-Wook),박문호(Park Moon-Ho),최정현(Choi Jung-Hyun),박태훈(Park Tae-Hun),박정활(Park Jung-Hwal) 한국구조물진단유지관리학회 2007 한국구조물진단학회 학술발표회논문집 Vol.11 No.1
This study is concerned with the optimum design of LB-Deck plate girder bridge. The optimizing algorithm using SUMT for optimum design of the Simple span, 2-Span, 3-span LB-deck plate and general RC-steel composite girder bridges(L=60m) which act live load(DB24). And their optimum numerical results are compares and analyzed to examine the possibility of optimization, the application and convergency of this optimizing algorithm.
김기욱 ( Kim Ki-wook ),박문호 ( Park Moon-ho ),최정현 ( Choi Jung-hyun ),박태훈 ( Park Tae-hun ),박정활 ( Park Jung-hwal ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1
This study is concerned with the optimum design of LB-Deck plate girder bridge. The optimizing algorithm using SUMP for optimum design of the Simple span, 2-Span, 3-span LB-deck plate and general RC-steel composite girder bridges (L=60m) which act live load(DB24). And their optimum numerical results are compares and analyzed to examine the possibility of optimization, the application and convergency of this optimizing algorithm.