KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지

Development of Dynamic Analysis System for Guideway Structures by considering Ultra High-speed Maglev Train-Guideway Interaction

초고속 자기부상열차-가이드웨이 상호작용을 고려한 가이드웨이 구조물의 동적해석시스템 개발

Song, Myung-Kwan;Kim, Kyeong-Ho
송명관;김경호

  • Published : 2005.09.30

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Abstract

In this study, a new three-dimensional finite element analysis model of guideway structures considering ultra-high speed Maglev train-bridge interaction is proposed, in which various improved finite elements are used for modeling structural members. The box-type bridge deck of a guideway structure is modeled by the NFS(Nonconforming Flat Shell) elements with 6 degrees of freedom. Sidewalls on the deck are idealized using beam finite elements and spring connecting elements. The vehicle model devised for an ultra-high speed Maglev train is employed, which is composed of rigid bodies with concentrated mass. The characteristics of levitation and guidance force, which exist between Maglev train and guideway structure, are modeled with the equivalent spring model. By Lagrange's equations of motion, the equations of motion of Maglev train-bridge system can be formulated. Finally, by deriving the equations of the forces acting on a guideway considering Maglev train-bridge interaction, the complete system matrices of total system can be constructed.

본 연구에서는 초고속자기부상열차-가이드웨이 상호작용을 고려한 가이드웨이 구조물의 새로운 3차원 유한요소 해석모델을 제안하였다. 이 해석모델에서는 가이드웨이 구조물의 각 구조부재들을 모형화 하기 위해서 개선된 다양한 유한요소들을 사용하였다. 6자유도를 갖는 NFS(nonconforming flat shell element) 유한요소를 사용하여 박스형태의 교량 상판을 모형화하였고, 보유한요소와 스프링연결요소를 사용하여 상판 위의 측벽구조물을 모형화하였다. 자기부상열차(magnetic levitation train)는 질량집중 강성모형을 사용하였으며, 자기부상열차와 가이드웨이 측벽 사이의 안내력과 부상력의 지지특성은 등가스프링모델로 모형화하였다. Lagrange 운동방정식을 이용하여 자기부상열차-가이드웨이 시스템의 운동방정식을 정식화하였다. 그리고, 자기부상열차-가이드웨이 상호작용을 고려하여 교량 상에 작용하는 하중의 방정식을 유도함으로써, 전체 시스템 행렬을 구성하였다.

Keywords

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