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Eksperimentalna in numerična analiza nastanka in širjenja razpok pri natezno obremenjenem armiranobetonskem elementu z različno razporeditvijo vzdolžne armature = Experimental and numerical analysis of crack formation and propagation along tensile loaded reinforced concrete elements with different arrangement of longitudinal reinforcementKralj, Urban, 1992- ; Bratina, Sebastjan ; Saje, Drago, 1969-V članku se ukvarjamo z analizo nastanka in širjenja razpok pri armiranobetonskem elementu, ki je izpostavljen delovanju kratkotrajne natezne obremenitve. V ta namen smo zasnovali in izdelali tri ... preizkušance pravokotnega prečnega prereza 10,8/7,2 cm in dolžine 80 cm, pri čemer smo pri enem vzdolžno armaturo vodili kontinuirno, pri drugih dveh pa smo izvedli stikovanje armature s prekrivanjem na različnih dolžinah. V vse preizkušance smo dodatno vgradili tudi stremensko armaturo z namenom preprečitve pojava razcepljanja betonskega ovoja. Po opravljenih nateznih preizkusih smo z numeričnim modelom, ki je bil razvit v okviru raziskovalnega dela na UL FGG, za obravnavane preizkušance simulirali pojavljanje razpok in rezultate primerjali z eksperimentalnimi opažanji. Ugotovili smo, da lahko z uporabljenim numeričnim modelom dovolj natančno simuliramo nastajanje in širjenje prečnih razpok, ne moremo pa simulirati pojava cepilnih razpok in njihovega vpliva na natezno nosilnost elementa. Lahko jih upoštevamo posredno, in sicer z ustreznim konstitucijskim zakonom stika med armaturo in betonskim ovojem na območju preklopa. Dodatno smo ugotovili, da lahko z ustreznim številom vgrajenih stremen preprečimo pojav razcepljanja betonskega ovoja v območju preklopa vzdolžne armature.Source: Gradbeni vestnik : glasilo Zveze društev gradbenih inženirjev in tehnikov Slovenije. - ISSN 0017-2774 (Letn. 69, sep. 2020, str. 226-243)Type of material - article, component part ; adult, seriousPublish date - 2020Language - slovenianCOBISS.SI-ID - 30280195
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source: Gradbeni vestnik : glasilo Zveze društev gradbenih inženirjev in tehnikov Slovenije. - ISSN 0017-2774 (Letn. 69, sep. 2020, str. 226-243)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kralj, Urban, 1992- | ![]() |
Bratina, Sebastjan | 20158 |
Saje, Drago, 1969- | 15852 |
Source: Personal bibliographies
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