Essays about: "subgrade"

Showing result 1 - 5 of 7 essays containing the word subgrade.

  1. 1. Data-driven Discovery of Real-time Road Compaction Parameters

    University essay from KTH/Matematisk statistik

    Author : Yuqi Shao; [2022]
    Keywords : statistics; machine learning; road compaction; statistik; maskininlärning; vägpackning;

    Abstract : Road compaction is the last and important stage in road construction. Both under-compaction and over-compaction are inappropriate and may lead to road failures. Intelligent compactors has enabled data gathering and edge computing functionalities, which introduces possibilities in data-driven compaction control. READ MORE

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

    University essay from KTH/Byggvetenskap

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

    Abstract : 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. READ MORE

  4. 3. Discrete Element Modelling of the Unbound Layer for Slab Tracks on High Embankment

    University essay from KTH/Jord- och bergmekanik

    Author : Karima Ghyate Forsberg; Rogin Ramak; [2016]
    Keywords : Slab track; unbound layer; discrete element modelling; deformation; embankment height; friction;

    Abstract : According to Swedish guidelines for high speed railways on embankment, the total settlement is limited to 20 mm over a track length of 10 m during the construction service life. The main objective of this thesis was to investigate the deformation in the subgrade (unbound layer) in a slab track, since there are very few studies related to high speed railways on high earth structure, discussing particularly the unbound layer. READ MORE

  5. 4. Kostnadsjämförelse för tillgänglighet under förfallsperioder genom tjälsäkring av skogsbilväg eller CTI-utrustade virkesbilar

    University essay from SLU/Department of Forest Biomaterials and Technology (from 131204)

    Author : Simon Viklund; [2015]
    Keywords : tjällossning; rundvirkestransport; vägstandard; bärighet; skogsbilväg;

    Abstract : Kraven på jämna leveranser av rätt råvara i rätt tid ökar ständigt inom svensk skogsindustri. För att säkerställa virkesleveranserna krävs bäriga skogsbilvägar. Detta är ofta ett problem under förfallsperioder, så som vid tjällossning och regniga höstperioder. READ MORE

  6. 5. Effekt av grusmängd och vältning för spårbildning på grusväg

    University essay from SLU/Department of Forest Biomaterials and Technology (from 131204)

    Author : Oscar Gustafsson; [2015]
    Keywords : GPR; skogsbilväg; virkesbil; FWD; roadscanner; forest road; timber truck;

    Abstract : Nybyggnation och underhåll av skogsbilvägar medför stora kostnader för skogsbruket. Georadar (GPR) är en teknik som kan användas för att läsa av en vägs struktur vilket ger ett möjligt tillvägagångssätt för att reducera kostnader vid upprustning av vägar. READ MORE