Affiliation:
1. Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai-600036, India
2. Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai-600036, India ()
Abstract
With the development of ever faster trains, the problem of excessive ground vibrations has increased. Dealing with ground vibration from surface and underground trains is a challenging issue for the railway industry. In the present work, the analysis of a typical Indian railway track system has been done with special emphasis on “track modulus” for Prestressed Concrete (PSC) sleepers and Wooden (WOOD) sleepers. The track consists of two rails of standard length, rail pads and sleepers with constant sleeper spacing, ballast and subgrade covering the length of the rails as per the Indian Railways standards. Finite Element models have been developed for computer simulation of the dynamic behaviour of the railway track system for 52PSC, 60PSC, 52WOOD and 60WOOD track. In this model, subgrade, ballast and rail pad parameters have been considered for parametric analysis of the track modulus. Finally the track system is excited harmonically over a range of frequencies to predict the dynamic variation in the track modulus.
Subject
Mechanical Engineering,Mechanics of Materials,Aerospace Engineering,Automotive Engineering,General Materials Science
Reference10 articles.
1. The excitation of ground vibration by rail traffic: theory of vehicle–track–soil interaction and measurements on high-speed lines
2. Jenks, C.W., 2006, "Design of track transitions," Report of Research Result Digest 79, Transit Cooperative Research Program, pp. 1-38.
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