Performance of square and inclined insulated rail joints based on field strain measurements
Dhanasekar, Manicka & Bayissa, Wirtu (2011) Performance of square and inclined insulated rail joints based on field strain measurements. Proceedings of the Institution of Mechanical Engineers, Part F : Journal of Rail and Rapid Transit, pp. 1-15.
Insulated rail joints (IRJs) possess lower bending stiffness across the gap containing insulating endpost and hence are subjected to wheel impact. IRJs are either square cut or inclined cut to the longitudinal axis of the rails in a vertical plane. It is generally claimed that the inclined cut IRJs outperformed the square cut IRJs; however, there is a paucity of literature with regard to the relative structural merits of these two designs. This article presents comparative studies of the structural response of these two IRJs to the passage of wheels based on continuously acquired field data from joints strain-gauged closer to the source of impact. Strain signatures are presented in time, frequency, and avelet domains and the peak vertical and shear strains are systematically employed to examine the relative structural merits of the two IRJs subjected to similar real-life loading. It is shown that the inclined IRJs resist the wheel load with higher peak shear strains and lower peak vertical strains than that of the square IRJs.
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|Item Type:||Journal Article|
|Keywords:||Wheel Impact, Insulated Rail Joints, Field Testing, Rail Strains, Strain Signatures|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
|Copyright Owner:||Copyright 2011 Sage Publications Ltd.|
|Deposited On:||31 Aug 2011 22:18|
|Last Modified:||04 Sep 2011 04:13|
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