Sökning: "railway tunnel"

Visar resultat 1 - 5 av 43 uppsatser innehållade orden railway tunnel.

  1. 1. Självutrymning i väg- och järnvägstunnlar - Krav och behov av vägledande markeringar och utrymningsbelysning

    Kandidat-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Linnea Mauritz; [2022]
    Nyckelord :Tunnel; vägtunnel; järnvägstunnel; självutrymning; nödbelysning; utrymningsbelysning; vägledande markering; personsäkerhet; människor beteende.; Technology and Engineering;

    Sammanfattning : The purpose of this report was to compile the current knowledge regarding design and function of evacuation signage and evacuation lighting in road and railway tunnels. Another purpose was to shed light on any issues in the aforementioned regulations and standards. LÄS MER

  3. 2. Artificial Intelligence applications for railway signalling

    Master-uppsats, KTH/Transportplanering

    Författare :Benjamin Smakic; [2021]
    Nyckelord :Artificial Intelligence; AI; Machine Learning; ML; Computer Vision; railway signalling; ERTMS level 3; GPS; autonomous train operations; Artificiell Intelligens; Maskininlärning; datorseende; signalteknik; autonoma tåg; självkörande tåg.;

    Sammanfattning : The main purpose of this Master Thesis is to investigate how front-facing, train-mounted cameras and Computer Vision, a type of Artificial Intelligence (AI), can be used to compensate for GPS inaccuracies. By using footage from track-recording cameras, Computer Vision can be utilized to determine the number of tracks and the track occupancy of the train, which would compensate GPS inaccuracies in the lateral positioning. LÄS MER

  4. 3. Överdäckningar – En analys av dagens riskhanteringsproblematik inom denna allt vanligare stadsbyggnadsstrategi

    Master-uppsats, Lunds universitet/Riskhantering (CI)

    Författare :Marcus Ahlström; [2021]
    Nyckelord :Risk management; risk analysis; risk evaluation; road tunnel; railway tunnel; dangerous goods; overbuilding; spatial planning; Technology and Engineering;

    Sammanfattning : The concept of road- and railway overbuilding is an increasingly popular method to use in spatial planning to get rid of physical barriers and create exploitable areas for residential, commercial, and recreational development. Despite the many benefits the method entails, it also brings a lot of problems and challenges regarding risk management with the main issue being how to evaluate and manage risks with extremely low probability and catastrophic consequences. LÄS MER

  5. 4. The Resilience of the Rail System for International Freight in Öresund Region in Case of Major Disruptions

    Master-uppsats, KTH/Transportplanering

    Författare :Sneha Gosavi; [2021]
    Nyckelord :Öresund Fixed Link; Capacity constraints; Freight trains; Simulation; Fast förbindelse Öresund; Kapacitetsbegränsningar; godståg; simulering iv;

    Sammanfattning : Rail Transport has held an important place in the European economy. Several problems plague rail freight. We frequently hear about train disruptions, whether it is due to a signal failure or an infrastructure breakdown, most of which have caused significant issues for both passengers and cargo. LÄS MER

  7. 5. RC Trough Bridges: A Parametric Study using FEM and an Analysis of their Current State

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :David Åkergren; [2021]
    Nyckelord :concrete; trough bridges; parametric study; FEM; BaTMan; ATENA; load eccentricity; compressive strength; tensile strength;

    Sammanfattning : There are approximately 4000 railway bridges in Sweden managed by the Swedish Administration of Transport (Trafikverket), of which a common construction type is the reinforced concrete (RC) trough bridge, which is a structure that consists of a slab carried by two longitudinal main beams which transfer loads towards the supports. A substantial amount of the RC trough bridge population is approaching the end of their service lives which consequently implies that the replacement of some of these bridges can be expected in the near future. LÄS MER