Static and Dynamic Behavior of Disk Bearings under Railway Vehicle Loading

철도차량하중에 의한 디스크받침의 정·동적 거동특성

  • 오세환 ((주)서영엔지니어링) ;
  • 최은수 (한국철도기술연구원) ;
  • 정희영 (서울시립대학교 토목공학과) ;
  • 김학수 (호남대학교 토목공학과)
  • Received : 2006.03.07
  • Accepted : 2006.07.21
  • Published : 2006.08.27

Abstract

The goal of this study is to ases the static and dynamic behavior of disk bearings under railway vehicle loadings. Several static tests were conducted in a laboratory t bearings, all having the same kind of polyurethane disk as used in the static tests, were installed under a full-sized railway bridge and tested with a running locomotive, the tests results, the static and dynamic stiffness of the disk bearings were estimated and compared. the deformation of the disk bearings under the bridge was measured at varying disk bearing was almost half of that under dynamic loading. In addition, the dynamic stiffness of the fixed disk bearing was 80% higher than that of an expansion disk bearing, since the PTFE in the expansion bearing is displaced. The deformation of the disk bearing did not vary significantly with changes in locomotive's speed. The results of this study can contribute to fast-tracking the formulation of a design technique for disk bearings for railway bridges.

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