{"?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-6Z8WTODL/4aa2449e-4a75-4b99-927f-e3d3d9705ef8/PDF","dcterms:extent":"1226 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-6Z8WTODL/7450f39b-b707-4a3b-9f8f-663565ff2868/TEXT","dcterms:extent":"26 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-6Z8WTODL","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-OE4S1HGI"},{"@xml:lang":"sl","#text":"Gradbeni vestnik"}],"dcterms:issued":"2018","dc:creator":"Češarek, Peter","dc:format":[{"@xml:lang":"sl","#text":"številka:letn. 67"},{"@xml:lang":"sl","#text":"str. 240-245"}],"dc:identifier":["ISSN:0017-2774","COBISSID_HOST:8611937","URN:URN:NBN:SI:doc-6Z8WTODL"],"dc:language":"sl","dc:publisher":{"@xml:lang":"sl","#text":"Zveza društev gradbenih inženirjev in tehnikov Slovenije"},"dc:subject":[{"@xml:lang":"en","#text":"civil engineering"},{"@xml:lang":"en","#text":"creep"},{"@xml:lang":"en","#text":"fin plate connections"},{"@xml:lang":"en","#text":"fire"},{"@xml:lang":"sl","#text":"gradbeništvo"},{"@xml:lang":"sl","#text":"jeklene konstrukcije"},{"@xml:lang":"sl","#text":"lezenje"},{"@xml:lang":"sl","#text":"ovirane deformacije"},{"@xml:lang":"sl","#text":"požari"},{"@xml:lang":"en","#text":"restrained beams"},{"@xml:lang":"en","#text":"steel structures"},{"@xml:lang":"sl","#text":"vijačeni spoji"}],"dcterms:temporal":{"@rdf:resource":"1951-2026"},"dc:title":{"@xml:lang":"sl","#text":"Vpliv visokotemperaturnega lezenja jekla na požarno odpornost vijačenih jeklenih konstrukcijskih sistemov| Influence of high temperature creep on fire resistance of bolted steel structural systems|"},"dc:description":[{"@xml:lang":"sl","#text":"The article presents computational results of the influence of high temperature creep on the mechanical response of bolted steel structural systems during fire and simultaneously compares two approaches to modelling creep of steel in a numerical analysis: (i) the simpler approach where creep strains are integrated implicitly in the plasticity model (such as, for example, the approach proposed by EN 1993-1-2, 2004) and (ii) the more consistent approach where creep strains are considered separately, i.e. explicitly. In everyday engineering applications, the first approach is most often applied, however it is alarming to observe that the limits of its validity are thereby often overlooked. So far, the severity of the consequential error of the results of such applications has been investigated for individual structural members (e.g. beams, columns). This paper, however, presents such comparison for bolted structural assemblies. With these, as the paper reveals, the influence of creep is most pronounced in the between-member connections. The results show that the times of structural failure predicted by the implicit-creep plasticity model are significantly longer than failure times predicted by the explicit creep model, if the implicit model is applied outside the limits of its applicability. Even more disturbing, however, is the finding that for one of the explored steels such differences are found also within these limits"},{"@xml:lang":"sl","#text":"Prispevek prikazuje rezultate kompleksnih računskih analiz vpliva visokotemperaturnega lezenja jekla na mehanski odziv vijačenih jeklenih konstrukcijskih sistemov v požaru in obenem primerja dva pristopa k modeliranju lezenja jekla v numerični analizi: (i) enostavnejši pristop, pri katerem deformacije lezenja implicitno vključimo v model plastičnosti (takšen je npr. tudi pristop, ki ga predlaga SIST EN 1993-1-2, 2004), in (ii) točnejši pristop, pri katerem so deformacije lezenja obravnavane ločeno oz. eksplicitno. Pri vsakodnevnih inženirskih aplikacijah se najpogosteje uporablja prvi pristop, zelo problematično pri tem pa je opažanje, da se pri tem pogosto pozablja na meje njegove veljavnosti. Doslej je bila kritičnost posledične napake izračuna raziskana na primerih analiz posameznih elementov konstrukcij (nosilcev, stebrov), ta prispevek pa to predstavi tudi na primerih konstrukcijskih sestavov z vijačenimi spoji. Pri teh je, kot pokaže članek, vpliv lezenja najbolj izrazit v območjih stikov. Rezultati pokažejo, da so časi porušitev, ocenjeni z implicitnim modelom lezenja, znatno daljši od kritičnih časov, ki jih predvideva eksplicitni model, če implicitni model napačno apliciramo zunaj meja njegove veljavnosti. Še bolj skrb zbujajoča pa je ugotovitev, da se takšna razlika za eno od obravnavanih vrst jekel pokaže tudi pri analizah, ko ostanemo v okviru omejitev poenostavljenega modela"}],"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-6Z8WTODL","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:doc-6Z8WTODL"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:doc-6Z8WTODL/4aa2449e-4a75-4b99-927f-e3d3d9705ef8/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-6Z8WTODL/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:doc-6Z8WTODL"}}}}