Sökning: "ballastless track"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden ballastless track.

  1. 1. Brobanor och dess egenskaper för kommande höghastighetsjärnväg : Brobanors användning och egenskaper i samband med höghastighetsjärnväg

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Haris Zubanovic; Hajk Saakyan; [2023]
    Nyckelord :Bridge lanes; cost; high-speed railway; maintenance; precast bridge elements; Brobanor; höghastighetsjärnväg; kostnad; underhåll; prefabricerade broelement;

    Sammanfattning : SammanfattningSvensk järnväg har aldrig varit mer belastad och trafikerad än idag, och värre kommer det att bli. Det har inte pågått några större investeringar i svensk järnväg sen 1990-talet, effekterna av den strategin börjar bli alltmer uppenbar. LÄS MER

  3. 2. Numerical modelling of high-speed railway transition zone

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :Karl Norberg; [2022]
    Nyckelord :Railway geotechnics; Bridge; Ballastless track; Transition zone; High-speed railway; Finite element method; Track stiffness;

    Sammanfattning : Transition zones are changes in the track structure, detected by an abrupt deviationin track stiffness and/or differential settlements. One inevitable transition zone is thebridge approach. This study has investigated in this transition zone, adapted for highspeed,ballastless track. LÄS MER

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

    Master-uppsats, KTH/Byggvetenskap

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

    Sammanfattning : 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. LÄS MER

  5. 4. Evaluation and comparison of ballastless track systems with regards to system and performance characteristics

    Master-uppsats, KTH/Spårfordon

    Författare :Willand Björkquist; Ismayil Janjua; [2020]
    Nyckelord :;

    Sammanfattning : As axle loads and speeds constantly increase in rail transport, new track systems are being developed. One such development is the ballastless track system. LÄS MER

  7. 5. Decision-making model for track system of high-speed rail lines : Ballasted track, ballastless track or both?

    Master-uppsats, KTH/Byggvetenskap

    Författare :Veronika Sárik; [2018]
    Nyckelord :;

    Sammanfattning : During the 50 years of existence of high speed railways, the track structure solutions have developed both in number and in type. As of today, in case of conventional railway, there are 2 main types one could mention: ballasted and ballastless track solutions. LÄS MER