Sökning: "High-Speed Trains"

Visar resultat 16 - 20 av 70 uppsatser innehållade orden High-Speed Trains.

  1. 16. Soil-Structure Interaction Analysis of Portal Frame Railway Bridges : Numerical Analysis of Two Case Study Bridges

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Nils Sandqvist; Marko Milicevic; [2020]
    Nyckelord :Soil-structure Interaction; Portal Frame Bridge; Dynamic Analysis; Perfectly Matched Layer; Train Passage Analysis; Railway Bridge; High Speed Train v;

    Sammanfattning : This thesis concerns dynamic Soil-Structure Interaction (SSI) analysis of portal framerailway bridges. Dynamic problems are common for bridges used for high speedrailway traffic. The passing trains induce harmonic loads on the bridges causingvibration amplitudes that may cause damage to the bridge structures and userdiscomfort. LÄS MER

  3. 17. Machine Learning – Based Dynamic Response Prediction of High – Speed Railway Bridges

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Jin Xu; [2020]
    Nyckelord :High-Speed Railway Bridges; Bridge Dynamics; Artificial Neural Networks ANNs ; Back-Propagation Neural Networks BPNNs .;

    Sammanfattning : Targeting heavier freights and transporting passengers with higher speeds became the strategic railway development during the past decades significantly increasing interests on railway networks. Among different components of a railway network, bridges constitute a major portion imposing considerable construction and maintenance costs. LÄS MER

  4. 18. Dynamic Analysis of Portal Frame Railway Bridges - Case Studies Investigating the Structural Response

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Avdelningen för Konstruktionsteknik; Lunds universitet/Institutionen för bygg- och miljöteknologi

    Författare :Benjamin Berg; Pontus Nyberg; [2020]
    Nyckelord :Dynamic Analysis; Portal Frame Bridges; High Speed Trains; Railway Bridges; Finite Element; Resonance; Modal Analysis; BRIGADE Plus; Technology and Engineering;

    Sammanfattning : As the world continues to see an increase in carbon dioxide emissions, actions aiming towards reducing man's negative impact on the environment are paramount. To be able to compete with the air travel industry, the Swedish Transport Administration suggests a vast expansion of the existing railway system. LÄS MER

  5. 19. Undersökning av konsolideringens inverkan på skjuvvågshastighet med SCPT i svensk finkornig jord : Med jämförelse mot empiriskt samband

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Geoteknologi

    Författare :Markus Lindström; Oldgren Martin; [2020]
    Nyckelord :Geoteknik; SCPT; vibrationer; konsolidering; svensk finkornig jord; skjuvvågshastighet;

    Sammanfattning : Att kunna utvärdera dynamiska parametrar i finkornig jord har blivit allt mer aktuellt i Sverige, inte minst på grund av de nya höghastighetsbanorna som ska byggas inom snar framtid. Tågens höga hastigheter kommer skapa dynamiska vågor som breder ut sig i den underliggande jorden. LÄS MER

  7. 20. 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