Sökning: "ballasted track"

Visar resultat 11 - 15 av 22 uppsatser innehållade orden ballasted track.

  1. 11. High-speed railway embankments : a comparison of different regulation

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Angelica Alamaa; [2016]
    Nyckelord :High-speed; railway; embankments;

    Sammanfattning : Swedish transport administration initiated this Master Thesis project and the aim was to compare regulations for the design of high-speed railways from three European countries: France, Germany and Spain. The reason why this is of interest for the Swedish transport administration is the design of the first Swedish high-speed railway, called Ostlänken. LÄS MER

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

    Master-uppsats, KTH/Transportplanering, ekonomi och teknik

    Författare :Irene Serrano González; [2015]
    Nyckelord :;

    Sammanfattning : 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. LÄS MER

  4. 13. Ballastfritt spår : Förslag till dimensioneringsmetoder

    M1-uppsats, KTH/Byggvetenskap

    Författare :Olle Hagman; Henok Berhane; [2015]
    Nyckelord :Slab track; Static analysis; Design methods; FEM; BEM; Winkler-bed; Ballastfritt spår; Statisk analys; Dimensioneringsmetoder; FEM; BEM; Winklerbädd;

    Sammanfattning : Ballastfria spår har på senare tid börjat byggas i allt större utsträckning. En anledning till detta är höjda krav på järnvägstransporter. Ett ballastfritt spår är ofta utformat som en långsträckt betongplatta på mark som för ned lasten från rälerna till underbyggnaden. LÄS MER

  5. 14. Övergångszoner mellan ballastspår och ballastfria spår

    Kandidat-uppsats, Lunds universitet/Utbildningar i Helsingborg

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

    Sammanfattning : 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. LÄS MER

  7. 15. Influence of the ballast on the dynamic properties of a truss railway bridge

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Lucie Bornet; [2013]
    Nyckelord :Ballast; Railway bridges; Experimental dynamics; Finite element modelling; Natural frequencies; Eigenmodes; Bridge stiffness.;

    Sammanfattning : To deal with a rapid development of high-speed trains and high-speed railways, constant improvement of the railway infrastructure is necessary and engineers are continuously facing challenges in order to design efficient and optimized structures. Nowadays, more and more railway bridges are built and thus, they require the engineers’ attention both regarding their design and their maintenance. LÄS MER