Evaluation of Railroad Ballast Field Degradation Using an Image Analysis Approach

Moaveni, Maziar; Tutumluer, Erol; Hart, John M.; McHenry, Mike

doi:10.1007/978-3-319-61627-8_8

Cited by 1 publication

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“…By comparing the results from the cyclic loading test on the ballast using a large-scale triaxial test apparatus with the full-scale laboratory test in the railway test facility (RTF), Aursudkij et al analyzed the permanent axial strains and particle size distribution under traffic loading [7]. Moaveni et al used an image analysis approach based on machine vision algorithms to assess ballast condition and degradation levels [8]. However, due to the structural characteristics of the ballasted track on the bridge, it is difficult to inspect the bridge deck and maintain the ballast bed.…”

Section: Introductionmentioning

confidence: 99%

Study on the Mechanical Characteristics of the Sleeper Slab Track on a Long-Span Steel Truss Bridge

et al. 2021

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This paper uses the long-span steel truss slab track as its research subject to analyze the new type of sleeper slab track structure with an experimental method. Firstly, a full-scale model was established in the laboratory to form a “rail–sleeper slab–self-compacting concrete cushion–steel beam” composite structure, and a fatigue test was performed on the track structure. The cyclic load was set up as a sine form with a range between 75 and 375 kN at a 5 Hz interval and 3 × 106 cycles. Based on the test, the performance of the track structure under cyclic train load was studied. Secondly, after every 106 loading cycles, the vertical static loading test and horizontal resistance test of the track structure were carried out to obtain the strain and displacement under different loading cycles. Finally, after 3 × 106 cycles of sine cyclic loading, the horizontal ultimate resistance test of the track structure was carried out to study its horizontal failure mode. The aims of this paper were to verify the applicability of the sleeper slab track, identify the mechanical properties, and determine the unfavorable position. The findings can provide an important reference for the practical use of the sleeper slab track structure.

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Section: Introductionmentioning

confidence: 99%