Essays about: "ballasted tracks and maintenance"

Found 5 essays containing the words ballasted tracks and maintenance.

  1. 1. Simulation of railway infrastructure with asphalt layer for tracks in Sweden

    University essay from KTH/Byggvetenskap

    Author : Aleksandra Kuksova; [2020]
    Keywords : Ballasted track; bituminous mixture; bituminous sub-ballast; temperature; railway track modelling; finite element analysis. v;

    Abstract : With the introduction of high-speed trains over the past few years, as well as withan increase in traffic loads and volumes, the attractiveness and competitiveness ofthe railway transport system have increased. This leads to the need to develop newcost-effective ways in railway construction, providing an increase in the life cycle ofthe railway track and reducing the need for maintenance. READ MORE

  3. 2. Railway bridges with floating slab track systems : Numerical modelling of rail stresses - Dependence on properties of floating slab mats

    University essay from Luleå tekniska universitet/Byggkonstruktion och -produktion

    Author : Daniel Kostet; [2018]
    Keywords : ballasted track; bridge; elastic mat; expansion; finite element method FEM ; finite element analysis FEA ; floating slab mat; interaction; International union of railways UIC ; non-ballasted track; SOFiSTiK; ballasterat spår; ballastfritt spår; bro; dilatationsfogar; finita elementmetoden FEM ; finit elementanalys FEA ; fixerat spår; interaktion; Internationella järnvägsunionen UIC ; SOFiSTiK; vibrationer; vibrationsdämpande matta;

    Abstract : The increased use of continuously welded rails in the railway systems makes it necessary to increase the control of the rail stresses to avoid instability and damages of the rails. Large stresses are especially prone to appear at discontinuities in the railway systems, such as bridges, due to the interaction between the track and the bridge. READ MORE

  4. 3. LCC approach for High-speed ballastless tracks

    University essay from KTH/Transportplanering, ekonomi och teknik

    Author : Irene Serrano González; [2015]
    Keywords : ;

    Abstract : An approach of life cycle cost analysis (LCCA) for high-speed ballastless tracks in Spain is carried out in this document based on an approximation of the present value behaviour through the Electre II Multi criteria method. A review of other LCC researches has been done analysing their results in order to adapt previous experimental tracks costs to the present study which is focused on construction and maintenance costs in Spain. READ MORE

  5. 4. Övergångszoner mellan ballastspår och ballastfria spår

    University essay from Lunds universitet/Utbildningar i Helsingborg

    Author : Andreas Åswärdh; Henrik Lund; [2014]
    Keywords : transition zones; transition constructions; ballastless tracks; slab tracks; ballasted tracks and maintenance; Technology and Engineering;

    Abstract : In today’s railway facilities there are several types of track systems with different characteristics, which must interconnect in order to obtain a closed network. The area where a track system passes over into another track system is called a transition zone. READ MORE

  6. 5. Slab track systems for high-speed railways.

    University essay from KTH/Väg- och banteknik

    Author : Georgios Michas; [2012]
    Keywords : Railway slab track; High-speed tracks; Finite element analysis; Rheda; Maintenance; Life Cycle Cost;

    Abstract : In the last 40 years an increase in train speed and axle load around the world and other challenges in the conventional ballasted track system gave birth to ballastless railway track system. This study examines in depth the various slab track systems that are being used today. READ MORE