Influence of shear connectors on the elastic behaviour of composite girders

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Szabó, Bertalan 2012-02-24T07:53:07Z 2012-02-24T07:53:07Z 2006-12-08
dc.identifier.isbn 951-22-8447-2
dc.identifier.issn 1456-6273
dc.description.abstract The effect of deformable and rigid connectors and influence of connection parameters on the behaviour of composite girders is examined. Both the elastic and plastic behaviour are discussed, but the former one is the main concern. Deformable connectors cause slip in the joint, which results in redistribution of internal forces and changes in the deformed shape of the beam compared to the connection with rigid connectors. The aim of this study is to complement the analytical methods and develop numerical models – based on the author's experimental research – capable to provide reliable parametric studies of three-dimensional structural models of composite girders with deformable and rigid connectors. At first, the partial interaction problem, behaviour of composite girders in the case of various loading types, recent development and real behaviour of connections of composite girders is discussed in the introduction. It is followed by a detailed literature survey serving the purpose of this study. This survey comprises two main parts: analytical and numerical models of composite girders. Among the analytical models, statical and energy methods are considered. The author also developed a new kind of energy method based on variational calculation for determination of shear force distribution of shear connectors of composite girders. The new method is in compliance with the experimental and the latest theoretical investigations. Next, experimental study on steel-concrete and wood-plywood composite girders conducted by the author at the Budapest University of Technology and Economics and Helsinki University of Technology respectively, are presented as well. Experimental studies are followed by parametric studies based on analytical and finite element analyses in order to examine how changes in the connector stiffness affect the behaviour of composite girders. Based on these parametric studies, new design formulas are developed for design practice. The main results obtained by the author are: development of energy method based on the variation calculation, elaboration of a parametric study for determining the elastic shear force for all cross-sections and spans, use of photoelastic method to verify shear stresses near to the beam end, simulation of temperature effect, and development of a FEM model providing results that show good compliance with experimental results. en
dc.format.extent 119
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Helsinki University of Technology publications in bridge engineering en
dc.relation.ispartofseries 36 en
dc.subject.other Civil engineering en
dc.title Influence of shear connectors on the elastic behaviour of composite girders en
dc.type G4 Monografiaväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Civil and Environmental Engineering en
dc.contributor.department Rakennus- ja ympäristötekniikan osasto fi
dc.subject.keyword steel-concrete and wood-concrete composite girders en
dc.subject.keyword bridge en
dc.subject.keyword shear connection en
dc.subject.keyword flexible connectors en
dc.subject.keyword finite element method en
dc.subject.keyword parametric study en
dc.identifier.urn urn:nbn:fi:tkk-008565
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (monografia) fi
dc.type.ontasot Doctoral dissertation (monograph) en
dc.contributor.lab Laboratory of Bridge Engineering en
dc.contributor.lab Sillanrakennustekniikan laboratorio fi

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