Sökning: "prestressing Eurocode"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden prestressing Eurocode.

1. 1. Cracking and Fatigue in the Prestressed Concrete Bridge at Autio

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Byggkonstruktion och brand

   Författare :Kasper Andersson; Jon Leidzén; [2022]
   Nyckelord :Fatigue; Cracking; Prestressed Concrete Bridge; Rainflow;

   Sammanfattning : In early 2020, cracks were discovered on the bridge crossing the Torne River at Autio. This resulted in an investigation being launched to determine the structural state of the bridge. LÄS MER

3. 2. Modelling Time-Dependent Effects for Segmentally Constructed Prestressed Concrete Bridges

   Master-uppsats, Lunds universitet/Avdelningen för Konstruktionsteknik; Lunds universitet/Institutionen för bygg- och miljöteknologi

   Författare :Niclas Elfving; Joel Sunesson; [2021]
   Nyckelord :Concrete; Creep; Segmentally constructed; Prestressing; Post-tensioning; Viscoelastic; Eurocode; Finite Element; Shell elements; Beam elements; Time-dependant; Steel relaxation.; Technology and Engineering;

   Sammanfattning : Tidsberoende effekter, såsom krypning, krympning och stålrelaxation, är ofta svåra att prediktera när det kommer till förspända betongkonstruktioner. Krypning som ett fenomen är komplicerat och förenklas därför i gällande byggnormer (Eurocode), för att underlätta konstruktörens arbete. LÄS MER

4. 3. Shear strength of prestressed concrete beams without shear reinforcement : A comparison between equations

   Master-uppsats, KTH/Betongbyggnad

   Författare :Bawan Azad; [2021]
   Nyckelord :Shear force; prestress concrete; design provisions; Eurocode; carrying capacity; parametric study; concrete beam; Tvärkraft; förspänd betong; dimensioneringsbestämmelser; Eurokod; bärförmåga; parameterstudie; betongbalk;

   Sammanfattning : A new version of EN 1992-1-1, Eurocode 2 for Design of Concrete Structures, is under development and one of the most discussed topics is shear capacity for prestressed concrete beams without shear reinforcement, partly because shear failure occurs suddenly and can have catastrophic consequences. For the new version of Eurocode, there are a total of three proposed equations to replace the two equations that currently exist in EN 1992-1-1 for shear capacity of prestressed concrete beams without shear reinforcement. LÄS MER

5. 4. Prestressed glue laminated beams reinforced with steel plates : Comparison between prestressed, reinforced and non-reinforced glue laminated beams according to the Eurocode and the Swedish annex

   Master-uppsats, KTH/Bro- och stålbyggnad

   Författare :Jafar Al-Djaber; [2018]
   Nyckelord :Prestressed glue laminated beams; Prestressed glulam beams; reinforced glue laminated beams; reinforced glulam beams; prestressing Eurocode; analytical comparision between prestressed and reinforced glulam;

   Sammanfattning : The paper presents details of a numerical analysis and simplified construction of strengthened glue laminated beams. Glue laminated beams are strengthened through the use of steel reinforcements embedded between the lamellas of the beams. LÄS MER

7. 5. Analysis of post-tensioned concrete box-girder bridges : A comparison of Incremental launching and Movable scaffolding system

   Master-uppsats, KTH/Bro- och stålbyggnad

   Författare :Hamad El Hamad; Furkan Tanhan; [2018]
   Nyckelord :Movable scaffolding system; MSS; Incremental launching; post-tension; prestress; slen- derness; box-girder; Stockholm Bypass; Movable scaffolding system; MSS; Etappvis lansering; efterspänning; förspänning; slankhet; box-girder; Förbifart Stockholm;

   Sammanfattning : When designing a bridge it is of high importance that the geometry for the cross section is optimized for the structure. This is partly due to the influence of the amount of material needed and its impact on the budget and environment. LÄS MER