Search results for "Pylon"

showing 2 items of 2 documents

Construction sequence analysis of long-span cable-stayed bridges

2018

Abstract In cantilever construction of long-span cable-stayed bridges the stressing sequence of stays is fundamental for establishing the final configuration of the bridge. The structural behaviour of these bridges is usually evaluated through a forward staged construction analysis, in which the values of the prestressing forces to be applied to stays are the main unknowns. A unified procedure for determining the initial cable forces and for analyzing the entire sequence is presented here, considering the geometric nonlinearity of stays through the Dischinger equivalent elastic modulus. The target is the simultaneous determination of the initial cable forces with the simulation of the const…

CantileverComputer science0211 other engineering and technologiesNAPS020101 civil engineering02 engineering and technologyBridge (nautical)0201 civil engineeringDeckStress (mechanics)Effects of uncertainties021105 building & constructionPylonForward analysisCivil and Structural EngineeringSequenceConstruction sequencebusiness.industryProbabilistic logicProbabilistic approachCable-stayed structures; Construction sequence; Effects of uncertainties; Forward analysis; NAPS; Partial scheme; PES; Probabilistic approach; Civil and Structural EngineeringStructural engineeringPESSettore ICAR/09 - Tecnica Delle CostruzioniNonlinear systemPartial schemebusinessCable-stayed structures
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Construction stages of cable-stayed bridges with composite deck

2012

A cable-stayed bridge is built by following a construction sequence of different subsequent stages that imply changes of the geometric configuration, restraints and consequently stress and strain patterns. A study is presented about stay stressing sequences in cable-stayed bridges with composite deck for the case of construction made by the cantilever method. Initial cable forces are found through partial elastic schemes of construction stages. Different stay stressing procedures are implemented and a comparison between them is proposed in order to evaluate the differences in terms of deformed shape and internal force distribution of the deck and the pylon. Results can be useful to give pra…

constructionEngineeringCable-stayed bridge; composite section; pretension; stays; stressing sequencebusiness.industryGeometric configurationStress–strain curveComposite numberBuilding and ConstructionStructural engineeringBridge (nautical)DeckSettore ICAR/09 - Tecnica Delle CostruzioniCantilever methodPylonsteelCable stayedBridgebusinessBridge Structures
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