Dynamic Response of Transitional Rail Structure

• Main Authors: Kuang-Hsia Shih, 施光夏
• Other Authors: 洪振發
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/56909411558939137477

碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 92 === When trains pass the connection between concrete part and ground part, viaduct part and ground part, or ballast and non-ballast system, the interface between different structural types may induce higher dynamic response due to the impact of discontinuous stiffness of structure . This paper focus on the dynamic characteristic of the transition rail structures. The subjects of this paper divides into two parts: (1) Study on the effects of different stiffness of elastic supports in the connection between ballast and non-ballast railway system to analysis the dynamic response of track and ballast bed. We use LS-DYNA to calculate the response of rail and track structures. (2) Utilize ANSYS to calculate the mode shape and natural frequency of simplified model, moreover we discuss the rail-wheel resonance, distance of sleeper, stiffness of support and train’s velocity relationship.