{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-1TMLOZ3L/7a8003b7-2c46-40ce-babe-6b2bfd03df28/PDF","dcterms:extent":"1072 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-1TMLOZ3L/c707f14f-3943-4a09-8437-ead1030b196c/TEXT","dcterms:extent":"30 KB"}],"edm:TimeSpan":{"@rdf:about":"1951-2026","edm:begin":{"@xml:lang":"en","#text":"1951"},"edm:end":{"@xml:lang":"en","#text":"2026"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:doc-1TMLOZ3L","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-OE4S1HGI"},{"@xml:lang":"sl","#text":"Gradbeni vestnik"}],"dcterms:issued":"2021","dc:creator":"Čas, Bojan","dc:format":[{"@xml:lang":"sl","#text":"številka:letn. 70"},{"@xml:lang":"sl","#text":"str. 62-69"}],"dc:identifier":["ISSN:0017-2774","COBISSID:61534467","URN:URN:NBN:SI:doc-1TMLOZ3L"],"dc:language":"sl","dc:publisher":{"@xml:lang":"sl","#text":"Zveza društev gradbenih inženirjev in tehnikov Slovenije"},"dc:subject":[{"@xml:lang":"sl","#text":"stebri"},{"@xml:lang":"sl","#text":"uklonske sile"}],"dcterms:temporal":{"@rdf:resource":"1951-2026"},"dc:title":{"@xml:lang":"sl","#text":"Uklon vitkih okroglih dvocevnih sovprežnih stebrov z betonskim jedrom ob upoštevanju zdrsov med sloji| Buckling capacity of slender concrete filled double skin steel tubular columns considering interface slips|"},"dc:description":[{"@xml:lang":"sl","#text":"In this paper, a novel mathematical model for the global buckling behaviour of slender concrete-filled double-skin tubular columns (CFDST) with finite compliance between the steel tubes and a sandwiched concrete core is derived for the first time. The model is capable to investigate the influence of various basic parameters on the critical buckling loads of CFDST columns. It is shown that the elastic buckling load of circular and slender CFDST columns is independent of the contact stiffness in the longitudinal direction, but on the other hand, it can strongly depend on the contact stiffness in the circumferential direction. Increasing the contact stiffness in the circumferential direction increases the critical buckling load. It is also shown that the analytical results agree well with the experimental and numerical results when the calibrated values of the circumferential contact stiffness are used in the calculations. Moreover, it is shown that the contact between the steel tubes and a sandwiched concrete core of the tested large sized CFDST columns used for comparison is relatively weak"},{"@xml:lang":"sl","#text":"V prispevku predstavimo nov matematični model za izračun kritične uklonske sile vitkih okroglih dvocevnih sovprežnih stebrov z betonskim jedrom in upoštevanjem zdrsa med jeklom in betonom. V angleškem govornem področju se tovrstne konstrukcije poimenujejo \"concrete filled double-skin tubular columns\" in se običajno označijo s kratico CFDST, ki jo uporabimo tudi v tem prispevku. Razviti računski model nam omogoča analizo vpliva različnih osnovnih parametrov na vrednost uklonske sile CFDST-stebrov. Izkaže se, da je uklonska sila tovrstnih stebrov neodvisna od vzdolžne togosti stika med jeklenim in betonskim delom sovprežnega prečnega prereza, medtem ko prečna togost stika podprerezov pomembno vpliva na vrednost kritične uklonske sile. Z naraščanjem vrednosti prečne togosti stika narašča tudi vrednost uklonske sile. Pokažemo tudi, da analitična vrednost kritične uklonske sile razvitega računskega modela dobro sovpada z rezultati eksperimentalnih in numeričnih raziskav drugih raziskovalcev, če v računskih postopkih uporabimo kalibrirane vrednosti prečne togosti stika med jeklenima cevema in betonskim jedrom CFDST-stebrov. S parametričnimi študijami pokažemo tudi, da prečna togost stika, kot je bila dosežena v primerih realnih, testom podvrženih CFDST-stebrov, zavzema številčno relativno nizke vrednosti"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:doc-1TMLOZ3L","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:doc-1TMLOZ3L"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:doc-1TMLOZ3L/7a8003b7-2c46-40ce-babe-6b2bfd03df28/PDF"},"edm:rights":{"@rdf:resource":"http://creativecommons.org/licenses/by-nc-sa/4.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Zveza društev gradbenih inženirjev in tehnikov Slovenije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:doc-1TMLOZ3L/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:doc-1TMLOZ3L"}}}}