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Title:ANALIZA "SHEAR LAG" EFEKTA NA NAKNADNO PREDNAPETI BETONSKI PLOŠČI Z NOSILCI
Authors:ID Kruškić, Jasna (Author)
ID Kuhta, Milan (Mentor) More about this mentor... New window
ID Presečki, Predrag (Comentor)
Files:.pdf MAG_Kruskic_Jasna_2016.pdf (4,88 MB)
MD5: 9CB88621CC0DFD0E63219674E53DC310
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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:»Shear lag« efekt, Evrokod 2, prednapenjanje, prednapeta plošča, T-prerez, efektivna širina, nevtralna os, MKE, modeliranje, kinematične vezi
Place of publishing:Maribor
Publisher:[J. Kruškić]
Year of publishing:2016
PID:20.500.12556/DKUM-64804 New window
UDC:624.072.1.012.46(043.2)
COBISS.SI-ID:20510742 New window
NUK URN:URN:SI:UM:DK:UCCQIL60
Publication date in DKUM:03.01.2017
Views:2274
Downloads:253
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FG
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Secondary language

Language:English
Title:ANALYSIS OF SHEAR LAG EFFECT IN POST-TENSIONED CONCRETE SLAB WITH BEAMS
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.
Keywords:»Shear lag« effect, Eurocode 2, post-tensioning, post-tensioned slab, T-section, effective width, neutral axis, FEM, modeling, kinematic constraints


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