Herbicide partitioning to concrete, asphalt and railway ballast
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Evaluation of Structural Behavior of Wide Sleepers on Asphalt Trackbed Due to Embedded Shear Keys
Korea Train eXpress (KTX) is now being operated, which allows Korea being one of the countries that operates the high-speed rail system. The high-speed rail has its advantage of short time transportation of population and materials, which lead to many researches performed in this matter. In the case of high speed classical trackbed system, the maintenance and usability of gravel ballast system ...
متن کامل(بررسی فنی و اقتصادی روسازه های بتنی در خطوط راه آهن مسافری (یادداشت فنی
Ballast as a part of the railway system plays an important role in the operation of the railways and also has a great impact on repair and maintenance activities. Hence most of the repair and maintenance activities in traditional railway systems are due to the defections in the ballast layer and therefore most of the maintenance budget is spent on repairing these defects. These repair and maint...
متن کاملEvaluating the Structural Behavior of Turnout Sleepers in the Case of Raising Speed
In this research, the structural behavior of timber and concrete sleepers in a standard railway turnout is evaluated, in the case of raising speed. In approaching this evaluation, current practices in the structural analysis of sleepers are surveyed and then, the sensitivity analysis with ABAQUS software is made based on selected criteria (bending and shear stresses as well as contact pressure)...
متن کاملAn Experimental and Numerical Study on the Effect of Different Types of Sleepers on Track Lateral Resistance
Lateral resistance of railway track is one of the most important parameters in lateral stability. This parameter depends!on the conditions of different components of ballasted railway track (such as density of ballast layer, sleeper spacing, type of sleeper, etc.). From this perspective, type of sleeper has an important effect on lateral resistance. However in some conditions, in technical and ...
متن کاملNew Advances in Analysis and Design of Railway Track System
A ballasted railway track system comprises several components among which steel rails, rail fasteners, timber, steel or concrete sleepers, granular ballast, sub-ballast, and subgrade materials are the main parts. Railway track systems are constructed to provide a smooth and safe running surface for passenger or freight trains. They are designed to sustain the force of lateral, longitudinal and ...
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