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A FEASIBILITY STUDY FOR THE MEASUREMENT OF TRACK MODULUS BY RAILWAY TRACK RECORDER CARS

J D Aplevich

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Abstract

Utilizing a classical model for the deflection of railway track under load, a method for measuring track modulus using existing track recorder cars is investigated. The method requires the measurement of the relative vertical deflections of the wheels of a 3-axle vehicle truck. Because the measurement is sensitive to vertical track profile imperfections, a statistical model of real track is used to determine the track sample lengths required to estimate track modulus to a given accuracy.

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What this paper is about

Utilizing a classical model for the deflection of railway track under load, a method for measuring track modulus using existing track recorder cars is investigated. The method requires the measurement of the relative vertical deflections of the wheels of a 3-axle vehicle truck. Because the measurement is sensitive to vertical track profile imperfections, a statistical model of real track is used to determine the track sample lengths required to estimate track modulus to a given accuracy.

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Available abstract

Utilizing a classical model for the deflection of railway track under load, a method for measuring track modulus using existing track recorder cars is investigated. The method requires the measurement of the relative vertical deflections of the wheels of a 3-axle vehicle truck. Because the measurement is sensitive to vertical track profile imperfections, a statistical model of real track is used to determine the track sample lengths required to estimate track modulus to a given accuracy.

Key concepts: Track (disk drive), Deflection (physics), Axle load, Axle, Truck, Curling, Structural engineering, Engineering

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