<?xml version="1.0"?><rdf: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-8KLRG6B4/b6e3dbc8-b334-44ee-9054-9625666c32a2/PDF"><dcterms:extent>4790 KB</dcterms:extent></edm:WebResource><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:doc-8KLRG6B4/30bde8fe-c550-4d34-9fdf-614a315919fb/TEXT"><dcterms:extent>51 KB</dcterms:extent></edm:WebResource><edm:TimeSpan rdf:about="1951-2026"><edm:begin xml:lang="en">1951</edm:begin><edm:end xml:lang="en">2026</edm:end></edm:TimeSpan><edm:ProvidedCHO rdf:about="URN:NBN:SI:doc-8KLRG6B4"><dcterms:isPartOf rdf:resource="https://www.dlib.si/details/URN:NBN:SI:spr-OE4S1HGI" /><dcterms:issued>2023</dcterms:issued><dc:creator>Anžlin, Andrej</dc:creator><dc:creator>Hekič, Doron</dc:creator><dc:creator>Kosič, Mirko</dc:creator><dc:format xml:lang="sl">številka:letn. 72</dc:format><dc:format xml:lang="sl">str. 78-90</dc:format><dc:identifier>ISSN:0017-2774</dc:identifier><dc:identifier>COBISSID_HOST:151593987</dc:identifier><dc:identifier>URN:URN:NBN:SI:doc-8KLRG6B4</dc:identifier><dc:language>sl</dc:language><dc:publisher xml:lang="sl">Zveza društev gradbenih inženirjev in tehnikov Slovenije</dc:publisher><dcterms:isPartOf xml:lang="sl">Gradbeni vestnik</dcterms:isPartOf><dc:subject xml:lang="en">calibration</dc:subject><dc:subject xml:lang="en">high-cycle fatigue</dc:subject><dc:subject xml:lang="sl">izmerjeni odziv</dc:subject><dc:subject xml:lang="sl">jekleni most</dc:subject><dc:subject xml:lang="sl">kalibracija</dc:subject><dc:subject xml:lang="en">measured response</dc:subject><dc:subject xml:lang="sl">preostala življenjska doba</dc:subject><dc:subject xml:lang="en">remaining fatigue life</dc:subject><dc:subject xml:lang="sl">spremljanje konstrukcijskega stanja</dc:subject><dc:subject xml:lang="en">steel bridge</dc:subject><dc:subject xml:lang="en">structural health monitoring</dc:subject><dc:subject xml:lang="sl">visokociklično utrujanje</dc:subject><dcterms:temporal rdf:resource="1951-2026" /><dc:title xml:lang="sl">Napoved preostale življenjske dobe jeklenega želežniškega mostu na utrujanje na podlagi izmerjenega odziva| Remaining fatigue-life prediction of a steel railway bridge based on measured response|</dc:title><dc:description xml:lang="sl">The transition to green mobility promoted by the European Union policy is increasing the demands for railway infrastructure. The increased number of trains and allowed axial load can accelerate high-cycle fatigue issues in steel bridges. Therefore, determining the remaining fatigue life of existing bridges is critical and requires an understanding of the actual loads and responses under real traffic. A methodology to improve fatigue-life prediction based on measured response was developed within the European project Assets4rail project. This article demonstrates this in a case study of a steel railway bridge. The results of the response measurements were used for manual and automatic calibration of the numerical model, where the manual calibration was based on engineering judgment, while the automatic calibration was based on three different nonlinear optimization algorithms. Considering the detail category and the number of cycles, the five most unfavourable construction details were selected and evaluated in terms of their remaining fatigue life. The study showed that calibrating the numerical model based on the measured response resulted in extended service life of the bridge by at least 30 years</dc:description><dc:description xml:lang="sl">V zadnjem času smo priča vse višjim zahtevam za železniško infrastrukturo, ki jih kot posledica prehoda na zeleno mobilnost spodbuja politika Evropske unije. Povečano število vlakov in dovoljenih osnih pritiskov lahko poveča problematiko visokocikličnega utrujanja materiala na jeklenih mostovih. Zato je pri izračunu življenjske dobe obstoječih mostov ključno poznavanje realne obtežbe in realnega odziva pod prometno obtežbo. V ta namen smo v okviru evropskega projekta Assets4rail razvili metodologijo za izboljšanje napovedi preostale življenjske dobe na utrujanje na podlagi izmerjenega odziva, ki jo v prispevku prikažemo na primeru jeklenega železniškega mosta. Rezultate meritev odziva smo uporabili za ročno in avtomatsko kalibracijo numeričnega modela, pri čemer smo za ročno kalibracijo upoštevali inženirsko presojo, za samodejno kalibracijo pa tri različne nelinearne optimizacijske algoritme. Na podlagi kategorije detajla in števila ciklov smo izbrali pet najbolj neugodnih konstrukcijskih detajlov, za katere smo izračunali preostalo življenjsko dobo glede na utrujanje. Rezultati študije so pokazali, da smo s kalibracijo numeričnega modela na izmerjeni odziv lahko podaljšali življenjsko dobo obravnavanega mostu za vsaj 30 let</dc:description><edm:type>TEXT</edm:type><dc:type xml:lang="sl">znanstveno časopisje</dc:type><dc:type xml:lang="en">journals</dc:type><dc:type rdf:resource="http://www.wikidata.org/entity/Q361785" /></edm:ProvidedCHO><ore:Aggregation rdf:about="http://www.dlib.si/?URN=URN:NBN:SI:doc-8KLRG6B4"><edm:aggregatedCHO rdf:resource="URN:NBN:SI:doc-8KLRG6B4" /><edm:isShownBy rdf:resource="http://www.dlib.si/stream/URN:NBN:SI:doc-8KLRG6B4/b6e3dbc8-b334-44ee-9054-9625666c32a2/PDF" /><edm:rights rdf:resource="http://creativecommons.org/licenses/by-nc-sa/4.0/" /><edm:provider>Slovenian National E-content Aggregator</edm:provider><edm:intermediateProvider xml:lang="en">National and University Library of Slovenia</edm:intermediateProvider><edm:dataProvider xml:lang="sl">Zveza društev gradbenih inženirjev in tehnikov Slovenije</edm:dataProvider><edm:object rdf:resource="http://www.dlib.si/streamdb/URN:NBN:SI:doc-8KLRG6B4/maxi/edm" /><edm:isShownAt rdf:resource="http://www.dlib.si/details/URN:NBN:SI:doc-8KLRG6B4" /></ore:Aggregation></rdf:RDF>