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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 can 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). For deep bridge girders the steel part of the cross-section does not usually remain unchanged, but the web distorts. This phenomenon is called lateral distortional buckling (LDB). 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 a method of inverted continuous U-frame. Author is working on a parametrical study on a model of two parallel steel I-beams connected to a concrete deck. Lateral bracings are provided between two beams 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. Recently the preliminary model of one beam was created and solved in Ansys WB in the mode of `Lateral buckling’, and the results were compared with a method proposed by Collin in 1998, which is also a part of the EN 1993-2.
- 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 can 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). For deep bridge girders the steel part of the cross-section does not usually remain unchanged, but the web distorts. This phenomenon is called lateral distortional buckling (LDB). 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 a method of inverted continuous U-frame. Author is working on a parametrical study on a model of two parallel steel I-beams connected to a concrete deck. Lateral bracings are provided between two beams 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. Recently the preliminary model of one beam was created and solved in Ansys WB in the mode of `Lateral buckling’, and the results were compared with a method proposed by Collin in 1998, which is also a part of the EN 1993-2. (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/68407700:21110/13:00208798!RIV14-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/68407700:21110/13:00208798
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - lateral buckling; composite structures; bridges; distortion; U-frame (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...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
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| http://localhost/t...ganizacniJednotka
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