Sökning: "Steel beams"

Visar resultat 1 - 5 av 64 avhandlingar innehållade orden Steel beams.

  1. 1. Bracing of steel bridges during construction; theory, full-scale tests and simulations

    Författare :Hassan Mehri; Avdelningen för Konstruktionsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bracing; steel-concrete composite; steel; bridge; test; construction; laboratory; experiment; experimental; theory;

    Sammanfattning : A number of steel bridges have suffered lateral-torsional failure during their construction due to their lacking adequate lateral and/or rotational stiffness. In most cases, slight bracing can be of great benefit to the main girders involved through their controlling out-of-plane deformations and enabling the resistance that is needed to be achieved. LÄS MER

  3. 2. Plain and steel fibre reinforced concrete beams subjected to combined mechanical and thermal loading

    Författare :Ali Alavizadeh-Farhang; KTH; []
    Nyckelord :Beams;

    Sammanfattning : .... LÄS MER

  4. 3. Restrained behaviour of beams in steel frames exposed to fire

    Författare :Naveed Iqbal; Aldina Santiago; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel Structures; Stålbyggnad;

    Sammanfattning : The current design procedures prescribed by the codes for design of steel beams at elevated temperatures require that the ultimate flexural resistance of the beam should be checked against the applied loading. This approach does not take into account the redistribution of bending moment due to fire exposure that takes place in a redundant frame. LÄS MER

  5. 4. Analysis of Catenary Effect in Steel Beams and Trusses Exposed to Fire

    Författare :Naveed Iqbal; Paulo Vila Real; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel Structures; Stålbyggnad;

    Sammanfattning : The goals of structural design are fundamentally different when designing structures at normal temperature or when designing them in a fire situation. While structures are primarily designed for normal temperature situations considering the different design limit states, in the fire design situation, however, the already designed structure is assessed for its resistance in the fire design limit state. LÄS MER

  7. 5. Strengthening steel beams with adhesively bonded composite laminates

    Författare :Dag Linghoff; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFRP laminate; adhesive bond; interfacial stresses.; Strengthening;

    Sammanfattning : Strengthening steel structures with carbon-fibre-reinforced-polymer (CFRP) laminates bonded to the steel substrate has become an interesting alternative to the conventional strengthening methods. The current research comprises analyses of the global and local behaviour of double-symmetrical steel beams strengthened with CFRP laminate bonded with adhesive to the tension flange. LÄS MER