체결장치의 강성 평가를 위한 실험적 연구 - 레일 연직방향 병진강성, 레일 강축에 대한 회전강성 -
An Experimental Study to Evaluate the Stiffness of Fastening Systems - Translational Stiffness along the Vertical Axis of Rail, Rotational Stiffness along the Strong Axis of Rail -
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초록
In the case of the railway bridges, uplift forces were occurred at the edge of the segments when vehicular loads were applied. These forces caused the compressive and tensile forces in the fastening system. In the past, a structural analysis has been performed to investigate the safety of fastening system which was modeled with one directional spring elements based on the compressive test of fastening system. In this case, the stiffness of the spring element was obtained from experimental study which was conducted by compressive load. Therefore, to perform rational and exact structural analysis, the translational stiffness of the fastening system obtained from the experimental study applied the tensile load and the rotational stiffness should be considered because it was occurred the tensile force as well as the compressive force in fastening system. In this study, an elastic and inelastic experimental study was performed for six specimens. The translational stiffness along the vertical axis of rail and the rotational stiffness along the strong axis of rail were investigated, also structural behavior of the fastening system was analyzed.
Abstract
In the case of the railway bridges, uplift forces were occurred at the edge of the segments when vehicular loads were applied. These forces caused the compressive and tensile forces in the fastening system. In the past, a structural analysis has been performed to investigate the safety of fastening system which was modeled with one directional spring elements based on the compressive test of fastening system. In this case, the stiffness of the spring element was obtained from experimental study which was conducted by compressive load. Therefore, to perform rational and exact structural analysis, the translational stiffness of the fastening system obtained from the experimental study applied the tensile load and the rotational stiffness should be considered because it was occurred the tensile force as well as the compressive force in fastening system. In this study, an elastic and inelastic experimental study was performed for six specimens. The translational stiffness along the vertical axis of rail and the rotational stiffness along the strong axis of rail were investigated, also structural behavior of the fastening system was analyzed.
참고문헌 (5)
- 안흥환, "궤도 구성 인자들이 장대레일 궤도 안정성에 미치는 영향", 석사, pp.2004
- 이주헌, "콘크리트도 상 궤도 교량단부 상향력 해석 및 적용", 한국철도학회 06춘계학술대회 논문집, pp.103~109 (2006)
- CEN(European Committee for Standardization), "The European Standard EN 13146 Railway applications-Track-Test methods for fastening systems", CEN(European Committee for Standardization) Part 7, 1~10 (2002)
- Track component property tests, "J. Choros", AAR(Association of American Railroads), ~, pp.R-479 (1982)
- KIMM(한국기계연구원), "Performance Tests of Fastening System in Korea High Speed Rail", Test Certificate, 2005183832-3～4, ~ (2005)