Essays about: "box-girder"

Showing result 1 - 5 of 7 essays containing the word box-girder.

1. 1. Study of demolition processes for prestressed concrete bridges: Kalix bridge

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Lundin Hanna; [2022]
   Keywords : Kalix bridge; demolition methods; demolition process; FEM analysis; Kalixbron; rivningsmetoder; rivningsprocesser; FEM analys;

   Abstract : Bridges in Sweden are getting older and some of them are reaching their designed life span. With an older generation of bridges, the need for a good understanding of demolition processes increase. The Kalix bridge is planned to be demolished and will be used as a case study in this thesis. READ MORE

3. 2. Long-term deformation of balanced cantilever bridges due to non-uniform creep and shrinkage

   University essay from KTH/Betongbyggnad

   Author : Sidra Akbar; Mathias Carlie; [2021]
   Keywords : Balanced cantilever bridges; box girder cross-section; concrete; non-uniform creep and shrinkage; Bažant’s B4 model; Eurocode 2; long-term deformations; finite element analysis; Freivorbau broar; lådtvärsnitt; betong; ojämnkrypningoch krympning; BažantsB4 modell; Eurokod 2; långtidsdeformationer; finita element analys;

   Abstract : Balanced cantilever bridges have historically experienced excessive deformations. Previous researchsuggeststhat the cause may be due to differential thickness in the box girder cross-section and underestimation of creep and shrinkage. READ MORE

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

   University essay from Lunds universitet/Avdelningen för Konstruktionsteknik; Lunds universitet/Institutionen för bygg- och miljöteknologi

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

   Abstract : 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. READ MORE

5. 4. Monitoring and Modelling of the Abiskojåkka Bridge

   University essay from Luleå tekniska universitet/Byggkonstruktion och brand

   Author : Kasper Furenstam; [2020]
   Keywords : Prestressed bridge; Abisko; Monitoring; thermal effects; FEM;

   Abstract : The infrastructure of today is getting older and problems caused by deterioration over time is affecting the service life of these structures. In Sweden most of the existing bridges were constructed 60 to 70 years ago, rising the need to determine the state of health of the bridges as the maintenance costs will increase heavily. READ MORE

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

   University essay from KTH/Bro- och stålbyggnad

   Author : Hamad El Hamad; Furkan Tanhan; [2018]
   Keywords : 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;

   Abstract : 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. READ MORE