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Visar resultat 1 - 5 av 36 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Hållbara balkar : En jämförelse av bärförmåga och klimatpåverkan hos stål-, trä-, och stålförstärkta träbalkar

    Uppsats för yrkesexamina på grundnivå, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :Viktor Ivansson; [2023]
    Nyckelord :Carbon emissions; climate change; cross-section; load-bearing capacity; steel beams; sustainable development; timber beams; Bärförmåga; hållbar utveckling; koldioxidutsläpp; klimatförändringar; stålbalkar; träbalkar; tvärsnitt;

    Sammanfattning : The contemporary imperative of sustainable development has established an unprecedented degree of urgency, in view of the intransigent challenges posed by the persistent and ever-increasing energy and climate crises. In 2019, the Swedish building industry accounted for 21% of the nation’s total greenhouse gas emissions, with the structural framework of a building contributing to 34% of its overall emissions. LÄS MER

  3. 2. Kritiska vippningslaster för kompositbalkar/lättbalkar av trä

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Jemy Abdalnour; Mohamed Ibrahim Abdirahman; [2023]
    Nyckelord :;

    Sammanfattning : This thesis has focused on the calculation of critical loads for lateral torsional buckling forthree selected wood-based composite beams with varying heights based on the availableMasonite Beams standard range. The main objective has been to investigate and compare ahand calculation model with the recommended method in Eurocode 5, as well as comparethem with results from finite element analysis. LÄS MER

  4. 3. Improved Bridge Load Capacity via Dynamic Train-Track-Bridge Interaction : Assessing the dynamic amplification factor caused by measured track irregularities for rail freight transport

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Muhannad Asaad; [2023]
    Nyckelord :;

    Sammanfattning : The carbon impact of transportation is large and requires sustainable solutions. With expected population growth, rail transportation plays a vital role in facilitating a greener Europe. The expansion of the rail infrastructure is therefore of essential importance for future challenges. LÄS MER

  5. 4. A parametric study of the static and dynamic performance of timber arch footbridges with different hanger configurations

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :ALEJANDRO GARCÍA GARCÍA; [2022]
    Nyckelord :Arch bridges; footbridge dynamics; critical load; bridge typology; parametric study;

    Sammanfattning : The influence of the hanger configuration in the arch and deck bending moments under asymmetric loads is widely used nowadays for improved designs of arch bridges. In this work, by means of a parametric study, those hanger configurations that most efficiently increase both the natural frequencies and buckling factors are identified, simultaneously evaluating the dynamic and static performance of timber arch footbridges. LÄS MER

  7. 5. Moment-resisting connections for glulam using birch plywood : An experimental study on both mechanical and adhesive connections

    Master-uppsats, KTH/Byggnadsmaterial

    Författare :Jonatan Ringaby; [2022]
    Nyckelord :;

    Sammanfattning : The aim of this study was to investigate the load-bearing capacity and stiffness of mechanical and adhesively bonded connections in timber structures with gusset plates made of birch plywood, as a preliminary study for potential future use in long-span timber structures which could reduce the environmental impact of the building sector by substituting steel with wood products in moment-resisting connections. Birch plywood was chosen for this study due to its high bending strength in comparison to plywood made of softwoods and its availability on the market. LÄS MER