Sökning: "high-speed bridge"
Visar resultat 1 - 5 av 47 uppsatser innehållade orden high-speed bridge.
1. Brobanor och dess egenskaper för kommande höghastighetsjärnväg : Brobanors användning och egenskaper i samband med höghastighetsjärnväg
Kandidat-uppsats, KTH/Byggteknik och designSammanfattning : 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
2. Dynamic Analysis of Portal Frame Bridges for High-Speed Trains : A Parametric Study
Master-uppsats, KTH/Bro- och stålbyggnadSammanfattning : A high-speed railway network is important for Sweden’s development. However, anincreasing train speed brings new challenges in bridge design due to higher bridgeaccelerations. LÄS MER
3. Numerical modelling of high-speed railway transition zone
Master-uppsats, KTH/Jord- och bergmekanikSammanfattning : 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. Reliability-Based Sensitivity Analysis of the Dynamic Response of Railway Bridges
Master-uppsats, KTH/Bro- och stålbyggnadSammanfattning : In response to the planned increase in operational speeds and axle loads of passengertrains that may lead to resonance-induced excessive vibrations in railway bridges,recent studies examined the reliability of bridges concerning train running safety andpassenger comfort limit states. In this respect, valuable information regarding theimportance of input variables can be obtained by conducting Sensitivity Analysis (SA). LÄS MER
5. Spectral density approach for dynamic analysis of high-speed railway bridges
Master-uppsats, KTH/Bro- och stålbyggnadSammanfattning : The focus of this thesis is to introduce the concept of train signature in the spectraldensity approach used in the dynamic analysis of simply-supported railway bridges.Due to the increased transportation demands, longer trains with higher axles loadsand top speeds are being developed. LÄS MER