Sökning: "Bridge"

Visar resultat 21 - 25 av 901 avhandlingar innehållade ordet Bridge.

1. 21. Application of monitoring to dynamic characterization and damage detection in bridges

   Författare :Ignacio Gonzalez; Raid Karoumi; Eugene O'Brien; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural health monitoring; Traffic monitoring; Bridge monitoring; Bridge Weigh-In-Motion; BWIM; Damage detection; Suspension bridge bearings; Axle loads; Dynamics; Temperature effect;

   Sammanfattning : The field of bridge monitoring is one of rapid development. Advances in sensor technologies, in data communication and processing algorithms all affect the possibilities of Structural Monitoring in Bridges. LÄS MER

3. 22. Capacity assessment of arch bridges with backfill : Case of the old Årsta railway bridge

   Författare :Andreas Andersson; Håkan Sundquist; Raid Karoumi; Clive Melbourne; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Concrete arch bridge; soil backfill; spandrel walls; field measurements; finite element method; load distribution; ultimate limit state.; Betongbågbro; jordfyllning; sidomur; fältmätningar; finita element metoder; lastspridning; brottgränstillstånd.; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

   Sammanfattning : The work presented in this thesis comprises the assessment of existing arch bridges with overlying backfill. The main objective is to estimate the load carrying capacity in ultimate limit state analysis. A case study of the old Årsta railway bridge is presented, serving as both the initiation and a direct application of the present research. LÄS MER

4. 23. 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

5. 24. Industrial Bridge Engineering -Structural developments for more efficient bridge construction

   Författare :Peter Harryson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; product and productivity developments; materials developments; Keywords: Bridges; fibre-reinforced polymers.; industrial construction process; steel-fibre-reinforced ultra-high-performance concrete; design; structural joints; structural developments;

   Sammanfattning : In recent years, growing concern about the deficiencies and lack of efficiency in the construction industry has highlighted the need of research in order to make substantial improvements, rectify incongruities and succeed in progressive development. For bridges, the advantages that can be expected from an industrial construction process are especially interesting. LÄS MER

7. 25. Funktionsentreprenad Brounderhåll : en pilotstudie i Uppsala län

   Författare :Hans-Åke Mattsson; Håkan Sundquist; Ove Lagerquist; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; funktionsentreprenad; brounderhåll; bridge; manintenance; function; contract; Building engineering; Byggnadsteknik;

   Sammanfattning : Before 1992 the Swedish Road Administration (SRA) carried out all bridge maintenance and minor repair for all bridges in Sweden by themselves. The bridge maintenance crew in a county consisted typically of 3-6 workers and a bridge-engineer. LÄS MER