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RISS 인기검색어
- 검색키워드
- 저자 : 김영국(Kim Yung-Guk) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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민경주(Min Kyung-Ju),이성욱(Lee Sung-Uk),이상대(Lee Sang-Dae),김영국(Kim Yung-Guk) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
In the railway bridges, steel plate girder types are preferred due the high stability. Nevertheless, it has been pointed out that this type of bridge has problems such as, structural damages in the rail and girder seat, noise problem due to impact at the rail joint and excessive vibration. This vibration and/or deflection are mainly because insufficient stiffness of steel plate type of bridge. This problems can not be avoided because the long rail system is applied in the modern railway structures. From 2010 the railway bridge noise also would be regulated by the law and the counter plan shall be prepared. In the current practice, the plate girder bridge strengthen can be performed either by plate strengthen, girder replacement or applying ballast, but all of these alternates have limitation for application and cost. To resolve these problems, PC composite plate girder type is proposed in this study. By this method, long rail technique can be applied with axial force reduced bearings. Using this method, economic rail maintainers, girder stiffness increase, and also speed/ride improvement even for existing rail could be expected by dynamic performance improvement. Additionally noise due to impact, deflection and vibration caused from long rails can be reduced. Also this method could be applied to the tilting train's speed improvement in the plate girder bridge which is introduced to improve existing rail's speed improvements.
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실물실험을 통한 PC-Slab합성 판형교의 성능비교연구
민경주(Min Kyung-Ju),이성욱(Lee Sung-Uk),김영국(Kim Yung-Guk),우용근(Woo Yong-Keun) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
In the railway bridges, steel plate girder types are preferred due the high stability. Nevertheless, it has been pointed out that this type of bridge has problems such as, structural damages in the rail and girder seat, noise problem due to impact at the rail joint and excessive vibration. This vibration and/or deflection are mainly because insufficient stiffness of steel plate type of bridge. To resolve these problems, PC-Slab composite plate girder type which has simple process and economic cost, is proposed in this study. The static and dynamic experiment is performed by using the production of actual sized PC-Slab and abandoned steel plate girder. The object of this experiment is to verify the fact that girder stiffness increase and structural safety. The result of the experiment is used to analyze the effect of performance improvement of PC composite plate girder type. Using this method, economic rail maintainers, girder stiffness increase, and also speed/ride improvement even for existing rail could be expected by dynamic performance improvement. Additionally noise due to impact, deflection and vibration caused from long rails can be reduced.
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