Sökning: "cracked concrete"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden cracked concrete.

  1. 1. Assessing the safety of cracked concrete dams

    Master-uppsats, KTH/Betongbyggnad

    Författare :Abdelsamad Mohamed Osman Fadul; [2021]
    Nyckelord :Buttress dams; Concrete; Global stability; Design criteria; RIDAS; Sliding; Overturning; Finite element analysis; Progressive failure analysis;

    Sammanfattning : AbstractThe overall safety of dams depend on several stipulations. One of them is global stability of the dam, which is addressed with approaches like that in (RIDAS, 2017) (the Swedish power companies’ guidelines for dam safety). When designing a new dam, two global failure modes; sliding and overturning should be considered according to RIDAS. LÄS MER

  3. 2. Stability of building structures using NLFEA including second order effects : Applications with the software ATENA-GiD

    Master-uppsats, KTH/Betongbyggnad

    Författare :Alexandros Petkoglou; [2021]
    Nyckelord :Non-linear analysis; second order effects; prefabricated buildings; ATENA; GiD; slip connection; Icke-linjär analys; andra ordnings effekter; förtillverkade byggnader; prefabricerade byggnader; ATENA; GiD; glidkoppling;

    Sammanfattning : In Sweden, prefabrication in the construction industry is a very common system. In prefabricated structures, there are various kinds of connections and generally many hinged connections. Therefore, it is of high interest to study the behavior of the prefabricated buildings in relation to the connections. LÄS MER

  4. 3. Effects of cracking of coupling beams onhigh rise towers subjected to wind load

    Master-uppsats, KTH/Betongbyggnad

    Författare :Brook Worku Woldemikael; [2020]
    Nyckelord :Crack; reinforcement content; aspect ratio; shear deformation; joint flexibility; concrete grade; effective stiffness.; Sprickor; förstärkningsinnehåll; tvärsnittsförhållande; skjuvdeformation; ledflexibilitet; betongkvalitet; effektiv styvhet;

    Sammanfattning : In high rise towers, reinforced concrete elevator shafts with coupling beams are extensively used as a principal structural element to resist lateral loads. The lateral load resistance of the tower is dominantly dependent on the stiffness of the load-bearing walls, and coupling beams connecting them. LÄS MER

  5. 4. Safety Assessment of Cracked Buttress Dams

    Master-uppsats, KTH/Betongbyggnad

    Författare :Robel Tekeste Fekadu; Sujata Kayastha; [2020]
    Nyckelord :Concrete buttress dam; finite element analysis; safety factor; global failure; reinforcement; corrosion; combined failure; traditional stability analysis;

    Sammanfattning : Most of the concrete buttress dams in Sweden were built from the 1950s till the1980s based on the traditional method of analyses. Those structures are reinforced and heavy in structure. Their height to thickness ratio being large makes them prone to crack during their lifespan. LÄS MER

  7. 5. Thermal cracking of a concrete arch dam due to seasonal temperature variations

    Master-uppsats, KTH/Betongbyggnad

    Författare :Jonas Enzell; Markus Tollsten; [2017]
    Nyckelord :Arch dam; Concrete; Finite element analysis; Cracking; Progressive failure analysis; Valvdamm; Betong; Finit elementanalys; Sprickor; Progressiv brottanalys;

    Sammanfattning : Concrete dams located in northern regions are exposed to large seasonal temperature variations. These seasonal temperature variations have resulted in cracking in thin concrete dams. Continuous monitoring and evaluation of existing dams are important to increase the knowledge about massive concrete structures and to ensure dam safety. LÄS MER