Sökning: "concrete bridge"

Visar resultat 1 - 5 av 100 avhandlingar innehållade orden concrete bridge.

  1. 1. Continuous Preventive Bridge Maintenance : Effect of High Pressure Washing on Concrete Bridges

    Författare :Louise Andersson; Johan Silfwerbrand; Anders Selander; Ylva Edwards; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bridge maintenance; preventive maintenance; chloride ingress; high-pressure washing; Concrete Structures; Betongbyggnad;

    Sammanfattning : In Sweden, as in many other countries, preventive maintenance of structures andbridges is considered important. It provides several benefits such as prolonged lifespan or service life, less need for repair, and hopefully reduced costs and lowerenvironmental impact.A large part of Sweden’s bridge stock is getting quite old. LÄS MER

  3. 2. Upgrading concrete bridges : post-tensioning for higher loads

    Författare :Jonny Nilimaa; Mohammad Al-Emrani; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Concrete; Bridges; Upgrading; Strengthening; Shear; Field testing; Post-tensioning; Prestressing; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : There are a great number of old structures around the world, some of which were designed for completely different purposes than in their current application. Swedish railway bridges were for example only designed for maximum axle loads of 200 kN in the beginning of the 20th century, while the highest axle loads of today are twice as high. LÄS MER

  4. 3. Improved Bridge Evaluation

    Författare :Hendrik Schlune; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; model updating; structural identification; Bridge evaluation; concrete structures; finite element analysis; finite element method; load cases;

    Sammanfattning : Accurate structural models are required for optimal management of existing bridges and economical new ones. However, unavoidable modelling uncertainties and difficulty in modelling the non-linear response of concrete bridges can lead to structural models which do not fulfil this requirement. LÄS MER

  5. 4. Concrete Bridges : Improved Load Capacity

    Författare :Jonny Nilimaa; Terje Kanstad; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : There are many beautiful old structures around the world, some of which were designed for completely different purposes than their current applications. For example, Swedish railway bridges were only designed to carry axle loads up to 200 kN in the beginning of the 20th century, while modern loads can be twice as high. LÄS MER

  7. 5. Effects of repairs on the remaining life of concrete bridge decks

    Författare :Jonatan Paulsson; KTH; []
    Nyckelord :Bridges; Bridge decks; Concrete;

    Sammanfattning : .... LÄS MER