magistrsko delo
Jasna Kruškić (Author), Milan Kuhta (Mentor), Predrag Presečki (Co-mentor)

Abstract

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.

Keywords

prednapeti beton;prednapete betonske plošče;analiza konstrukcij;Shear lag efekt;strižno zaostajanje;modeliranje T-prereza;magistrske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Publisher: [J. Kruškić]
UDC: 624.072.1.012.46(043.2)
COBISS: 20510742 Link will open in a new window
Views: 1519
Downloads: 180
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Other data

Secondary language: English
Secondary title: ANALYSIS OF SHEAR LAG EFFECT IN POST-TENSIONED CONCRETE SLAB WITH BEAMS
Secondary abstract: 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.
Secondary keywords: structural analysis;post-tensioning;Shear lag effect;Eurocode 2;modeling;
URN: URN:SI:UM:
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za gradbeništvo, prometno inženirstvo in arhitekturo
Pages: XIV, 101 f.
ID: 9237583