Sökning: "bridge building"

Visar resultat 1 - 5 av 104 avhandlingar innehållade orden bridge building.

1. 1. Integrated Bridge Maintenance : Evaluation of a pilot project and future perspectives

   Författare :Hans-Åke Mattsson; Håkan Sundquist; Jan Bröchner; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bridge management; bridge maintenance; real service life; partnering; Building engineering; Byggnadsteknik;

   Sammanfattning : The trend in many countries is to outsource maintenance with competitive tendering. The design of the tender is then a crucial issue. A new type of tendering contract, called "Integrated Bridge Maintenance", was introduced in one experimental area in Sweden. LÄS MER

3. 2. 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

4. 3. Crossing the Bridge : An Interpretation of the Archaeological Remains in the Etruscan Bridge Complex at San Giovenale, Etruria

   Författare :Yvonne Backe-Forsberg; Gullög Nordquist; Lars Karlsson; Ingela Wiman; Uppsala universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Classical archaeology and ancient history; Etruscan; San Giovenale; bridge; chthonic; Vesuna; Lurs Larunita; gens; Urcena; Larth; Fasthi Alsi; sacellum; Orientalizing; Protovillanovan; Archaic; Hellenistic; pottery; Greek imports; inscriptions; ritual; liminal; rites of passage; sacrifices; banqueting; transit road; multiple functions; continuity; change; Antikens kultur och samhällsliv; Classical archaeology and ancient history; Antikens kultur och samhälle; arkeologi; Archaeology;

   Sammanfattning : This thesis discusses the archaeological remains in the Etruscan bridge complex, found during the excavations at San Giovenale in 1959–1963, and 1999. The aim has been to reach a holistic perspective of the bridge complex with the bridge seen as a link between topography, economy, social relationships, politics, symbols and ritual, reflecting its importance for the whole community at San Giovenale and its surroundings. LÄS MER

5. 4. 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

7. 5. Performance of high-frequency mechanical impact treatment for bridge application

   Författare :Poja Shams Hakimi; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatigue; bridge; LEFM; HFMI; thickness effect; size effect; steel;

   Sammanfattning : This thesis investigates the performance of high-frequency mechanical impact (HFMI) treatment for implementation on new bridge designs. Fatigue strength improvement with HFMI can enable lightweight design of bridges and allow the utilisation of the benefits of high-strength steels. LÄS MER