20.500.12556/DKUM-64804 ANALIZA "SHEAR LAG" EFEKTA NA NAKNADNO PREDNAPETI BETONSKI PLOŠČI Z NOSILCI ANALYSIS OF SHEAR LAG EFFECT IN POST-TENSIONED CONCRETE SLAB WITH BEAMS V analizi konstrukcij »shear lag« upoštevamo z modeliranjem efektivne širine pasnice. V magistrski nalogi je analiziran »shear lag« efekt na naknadno prednapeti monolitni plošči z nosilci. Obravnavani so tudi nekateri aspekti modeliranja in izračuna prednapete plošče z nosilci. Analizirane so normalne napetosti v plošči v smeri x-osi in narejena je primerjava vrednosti efektivnih širin, dobljenih z računalniško analizo na MKE-modelu, ob variiranju različnih parametrov, ki lahko vplivajo na »shear lag« efekt, z efektivno širino, določeno s pomočjo izrazov standarda Evrokod 2. Ocenjevana je upravičenost upoštevanja »shear lag«-a z modeliranjem efektivne širine določene po Evrokod 2 v primeru prednapete plošče z nosilci majhne togosti. Izkaže se, da je upoštevanje »shear lag«-a z modeliranjem efektivne širine v tem primeru precej konzervativen pristop. In global analysis, shear lag effect is usually taken into account by using simplified method with effective flange width. Master's thesis deals with analysis of shear lag effect in post-tensioned slab with beams. Paper emphasizes some important aspects of post-tensioned slab with beams design. Calculation of normal stresses in plate (in x-directions) is performed for different models, and the influence of some parameters on the shear lag effect is analysed. Comparison is made between the effective width calculated according to Eurocode 2 standard and the effective width calculated on finite element models. Accuracy of the simplified approach to shear lag with effective width in the case of post-tensioned slab with beams is evaluated. According to results of the analysis, simplified method with effective width is quite conservative approach. »Shear lag« efekt Evrokod 2 prednapenjanje prednapeta plošča T-prerez efektivna širina nevtralna os MKE modeliranje kinematične vezi »Shear lag« effect Eurocode 2 post-tensioning post-tensioned slab T-section effective width neutral axis FEM modeling kinematic constraints true true false [J. Kruškić] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2016-12-14 14:03:18 2017-01-03 11:49:30 2022-07-06 03:06:40 2019-07-11 14:56:28 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 624.072.1.012.46(043.2) 20510742 URN:SI:UM:DK:UCCQIL60 MAG_Kruskic_Jasna_2016.pdf MAG_Kruskic_Jasna_2016.pdf 1 9CB88621CC0DFD0E63219674E53DC310 d9dc88cc5019772f8d962fdada8682dfd509e7af8652a9d8f8765b550fd21eb7 e857feda-7c0d-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=108841 Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo 0 0 0