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dc.creatorKovačević, Saša
dc.creatorMarković, Nenad
dc.creatorĆeranić, Aleksandar
dc.creatorBendić, Milica
dc.date.accessioned2021-12-23T13:13:47Z
dc.date.available2021-12-23T13:13:47Z
dc.date.issued2021
dc.identifier.urihttps://grafar.grf.bg.ac.rs/handle/123456789/2592
dc.description.abstractThe paper reports a numerical investigation and determination of unfavorable geometric imperfection shapes in steel plate girders subjected to concentrated compressive forces by means of the ultimate limit state. This load case is present in many engineering applications, including beam-beam and beam-column connections, deep crane runway beams loaded by crane wheels, and during the incremental launching of multi-span steel and composite bridges over temporary or permanent supports. A parametric imperfection-sensitivity study has been performed on I-shaped steel plate girders employing geometrically and materially nonlinear finite element analysis. Experimentally measured, buckling mode-affine, and hand defined sinusoidal geometric imperfections were varied in the study in combination with varying patch load lengths and relative stiffnesses of the longitudinal stiffener. It is shown in the paper that geometric imperfections can play a decisive role and significantly affect the ultimate strength of longitudinally unstiffened and stiffened steel plate girders. Unfavorable geometric imperfection shapes in steel plate girders subjected to edge loading are governed by the patch load length and the relative stiffness of the longitudinal stiffener. Different unfavorable geometric imperfections were found for different patch load lengths and relative stiffnesses. Local geometric imperfections defined in the upper web sub-panel yield lower ultimate strengths than global geometric imperfections (defined over the whole web depth). The lowest ultimate strengths were returned for geometric imperfections that resembled the deformation at collapse (collapse-affine imperfections). Further research should focus on finding an equivalent shape that resembles the deformation at failure for different patch load lengths and girder characteristics.sr
dc.language.isoensr
dc.rightsrestrictedAccesssr
dc.sourceProceedings of the Annual Stability Conference Structural Stability Research Council Louisville, Kentucky, April 13-16, 2021sr
dc.titleUnfavorable imperfection shapes in steel plate girders for web local cripplingsr
dc.typeconferenceObjectsr
dc.rights.licenseARRsr
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_grafar_2592
dc.type.versionpublishedVersionsr


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