the main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. therefore, railway track desig...

The main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. Numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. Therefore, railway track desig...

current practices in railway track analysis and design are reviewed and discussed in this paper. the mechanical behavior of railway track structure comprising of various components has not been fully understood due to the railway track structural complexity. although there have been some improvements in the accuracy of current track design methods in recent decades, there are still considerable...

One of the effective techniques to strengthen subgrade is boring and mixing technology, which based on immersion vertical elements – piles into subgrade. This method strengthening significantly affects stress state track superstructure. Two options placement are examined in this paper. To determine influence position superstructure, appropriate finite-element models were created. The fully refl...

Statistical methods of control point components and quality products are an integral part modern production, their application is closely connected with solving tasks increasing labour productivity general enterprise culture, saving materials, reducing defects. The paper presents a derivation basic formulas for binomial distribution elements the railway track superstructure. Calculation theoret...

The asset management and Life Cycle Costing (LCC) principals perform a vital role in the reduction and optimization of the costs of an infrastructure manager, providing a better decision support technically and financially. It was intended to create an asset management LCC model to rail track superstructure of the Portuguese rail network assembled with the Iberian gauge. This model is able to r...