Essays about: "Prestress"

Found 4 essays containing the word Prestress.

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

    University essay from KTH/Betongbyggnad

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

    Abstract : 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. READ MORE

  3. 2. 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

  4. 3. Widening of The Nockeby Bridge : Methods for strengthening the torsional resistance

    University essay from KTH/Bro- och stålbyggnad

    Author : Jenny Andersson; [2016]
    Keywords : Strengthening of bridges; external prestressed reinforcement; carbon-fiber reinforced polymer; torsion; torsional resistance; prestressed concrete; Förstärkning av broar; extern spännarmering; kolfiberförstärkning; vridning; vridkapacitet; förspänd betong;

    Abstract : i Abstract The Nockeby Bridge, in the western part of Stockholm, is a prestressed concrete bridge with an openable swing span of steel. The bridge was built during 1970 and should now be widened with 0.5 meters on each side. The concrete bridge deck is supported by two main-beams and cross-beams are located at the position of all supports. READ MORE

  5. 4. Coupled Dynamic 3D Simulation of Short Circuit Forces

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : PRITESH DULABHAI HADIYA; [2013]
    Keywords : Two dimensional axisymmetric; Three dimensional model; Comsol Multiphysics; Transformer short circuit.;

    Abstract : The purpose of this work is to find the effect of short circuit current on displacement inside the transformer’s winding. In this work two different winding has been investigated by creating 2D and 3D simulation models of them. In order to solve the problem various assumptions/simplification has been taken and verified. READ MORE