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| Description
| - Composite bridges consisting of several parallel bridge plate girders connected to a concrete deck are favourably used for middle spans. If the structure is continuous over several supports one of the main design tasks is to ensure stability. Lateral buckling may occur in the regions close to internal support where the compressed lower flange does not get any continuous lateral restraint. The tensile upper flange is restrained continuously in lateral displacement (rigidly) and rotation (flexibly). The steel part of deep bridge girders usually distorts while buckling and so called lateral distortional buckling (LDB) appears. The theory for lateral buckling of thin-walled cross-sections cannot be applied in case of LDB because of the cross-sectional distortion. In common practice the problem is solved by the method of inverted continuous U-frame. Recently the more precise solutions have been searched by using finite elements and finite strip methods. At the moment a parametrical study is being developed by the first author of this paper. A model of two parallel steel I-beams connected to a concrete deck corresponding to the U-frame model supported over three spans will be submitted for finite element analysis. Lateral bracings between two beams and web stiffeners are provided in specific distances. The parameters are: spacing of the beams, distance and stiffness of the bracings and depth of the steel section. The model will be verified according to other studies and then the critical moment and the ultimate moment will be observed according to the parameters. The aim of the study is to introduce a specific way for design of composite beams exposed to lateral distortional buckling. The preliminary model of one continuous composite girder was made in Abaqus software and structural behaviour was observed concerning eigenmodes and failure modes.
- Composite bridges consisting of several parallel bridge plate girders connected to a concrete deck are favourably used for middle spans. If the structure is continuous over several supports one of the main design tasks is to ensure stability. Lateral buckling may occur in the regions close to internal support where the compressed lower flange does not get any continuous lateral restraint. The tensile upper flange is restrained continuously in lateral displacement (rigidly) and rotation (flexibly). The steel part of deep bridge girders usually distorts while buckling and so called lateral distortional buckling (LDB) appears. The theory for lateral buckling of thin-walled cross-sections cannot be applied in case of LDB because of the cross-sectional distortion. In common practice the problem is solved by the method of inverted continuous U-frame. Recently the more precise solutions have been searched by using finite elements and finite strip methods. At the moment a parametrical study is being developed by the first author of this paper. A model of two parallel steel I-beams connected to a concrete deck corresponding to the U-frame model supported over three spans will be submitted for finite element analysis. Lateral bracings between two beams and web stiffeners are provided in specific distances. The parameters are: spacing of the beams, distance and stiffness of the bracings and depth of the steel section. The model will be verified according to other studies and then the critical moment and the ultimate moment will be observed according to the parameters. The aim of the study is to introduce a specific way for design of composite beams exposed to lateral distortional buckling. The preliminary model of one continuous composite girder was made in Abaqus software and structural behaviour was observed concerning eigenmodes and failure modes. (en)
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| Title
| - Lateral buckling of continuous composite bridge girder
- Lateral buckling of continuous composite bridge girder (en)
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| skos:prefLabel
| - Lateral buckling of continuous composite bridge girder
- Lateral buckling of continuous composite bridge girder (en)
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| skos:notation
| - RIV/68407700:21110/14:00218059!RIV15-MSM-21110___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21110/14:00218059
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - lateral buckling; distortion; bridge; composite; U-frame; FEM (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Proceedings of the 12th International Conference on Steel, Space and Composite Structures
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Studnička, Jiří
- Řehoř, Filip
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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