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장승필,곽종원,하상길,김성일,Chang, Sung Pil,Kwark, Jong Won,Ha, Sang Gil,Kim, Sung Il 한국강구조학회 1998 韓國鋼構造學會 論文集 Vol.10 No.4
The influences of high speed train on the dynamic responses of steel composite railway bridges are investigated. The bridge system which has two I-girder and several cross beams is modeled with plate and frame elements. With assumption of concrete slabs are fully connected with steel girders, the offset between slabs and girders is modeled using constraint equation. The track system is modeled using beams on elastic foundation theory. And, the TGV train model is developed in 2-dimension considering bouncing and pitching motion. And braking action of vehicle is considered using speed dependent braking function. To investigate the behavior of bridges due to moving trains, parametric studies on the variation of natural frequency of bridge, speed parameter, vehicle modeling method, braking action of train, etc are performed. 본 연구에서는 열차하중이 강합성형 철도교의 동적응답에 미치는 영향을 연구하였다. 2개의 I-거더와 가로보로 구성된 판형교는 판요소와 공간뼈대요소를 이용하여 모델링하였으며, 상판과 주형의 offset은 완전합성을 가정하여 구속방정식을 이용하여 연결하였으며 트랙구조는 고전적인 탄성지반위의 보 이론을 사용하여 이상화하였다. 2PC+2MT+161T로 구성된 TGV열차의 수직처짐과 피칭회전을 고려한 2차원 수치모델을 개발하였다. 또한, 속도의존적 제동함수를 사용하여 열차의 제동을 고려하였다. 이동열차하중에 의한 교량의 동적거동 파악을 위하여 교량의 고유진동수 변화, speed parameter, 차량모델링 방법, 열차의 제동 등에 대한 매개변수연구를 수행하였다.
THEORETICAL AND EXPERIMENTAL RESEARCH ON THE DYNAMIC BEHAVIOR OF CRANE RUNWAY GIRDER
장승필(Sung Pil Chang),박효기(Hyo Gi Park),하상길(Sang Gil Ha) 한국강구조학회 1993 韓國鋼構造學會誌 Vol.5 No.1
In this study, to find out the reason of fatigue fracture of crane runway girder(CRG), theoretical and experimental research on the dynamic behavior of CRG was carried out. The Primary object of research is to find the dynamic behavior and fatigue phemomena of CRG under the crane moving load and lifting load. In dynamic analysis, finite element method is used to solve the equilibrium differential equation governing linear dynamic response of CRG. To predict the fatigue life of CRG, The Palmgren-Miner hypothesis as the linear cumulative fatigue damage theory is used. Linear cumulative fatigue damage D was calculated in accordance with linear damage rules.
고속열차하중 하의 강합성형 철도교의 동적거동에 관한 연구
장승필(Chang Sung Pil),곽종원(Kwark Jong Won),하상길(Ha Sang Gil),김성일(Kim Sung Il) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
The influences of high speed train on the dynamic responses of steel composite railway bridges are investigated. The bridge system which has two I-girder and several cross beams is modeled with plate and frame elements. With assumption of concrete slabs are fully connected with steel girders, the offset between slabs and girders is modeled using rigid link. The track system is modeled using beams on elastic foundation theory. And, the TGV train is modeled in 2-dimension considering bouncing and pitching motion. And, braking action of vehicle is considered using speed dependent braking function. To investigate the behavior of bridges due to moving trains, parametric studies are performed.