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master's thesis
Primjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina
Zagreb: University of Zagreb, Faculty of Civil Engineering, 2021. urn:nbn:hr:237:323834
Šimunović, Stjepan
University of Zagreb
Faculty of Civil Engineering
Structures

Institutional repository: Repository of the Faculty of Civil Engineering, University of Zagreb

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Šimunović, S. (2021). Primjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina (Master's thesis). Zagreb: University of Zagreb, Faculty of Civil Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:237:323834

Šimunović, Stjepan. "Primjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina." Master's thesis, University of Zagreb, Faculty of Civil Engineering, 2021. https://urn.nsk.hr/urn:nbn:hr:237:323834

Šimunović, Stjepan. "Primjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina." Master's thesis, University of Zagreb, Faculty of Civil Engineering, 2021. https://urn.nsk.hr/urn:nbn:hr:237:323834

Šimunović, S. (2021). 'Primjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina', Master's thesis, University of Zagreb, Faculty of Civil Engineering, accessed 12 September 2024, https://urn.nsk.hr/urn:nbn:hr:237:323834

Šimunović S. Primjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina [Master's thesis]. Zagreb: University of Zagreb, Faculty of Civil Engineering; 2021 [cited 2024 September 12] Available at: https://urn.nsk.hr/urn:nbn:hr:237:323834

S. Šimunović, "Primjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina", Master's thesis, University of Zagreb, Faculty of Civil Engineering, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:237:323834

Metadata
TitlePrimjena numeričkog modela za predviđanje uporabnog vijeka na Vijaduktu Zalesina
Title (english)Application of numerical model for service life prediction on the Zalesina Viaduct
AuthorStjepan Šimunović
MentorMarija Kušter Marić (mentor)
Committee memberIvan Ćurković (predsjednik povjerenstva)
Committee memberMarija Kušter Marić (član povjerenstva)
Committee memberIvan Lukačević (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Civil Engineering
(Structures)
Zagreb
Defense date and country2021-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Civil Engineering
Supporting Structures
Abstract
Vijadukt Zalesina se nalazi na snježnoj dionici Ravna Gora-Delnice, autoceste Rijeka-Zagreb (A6). Tijekom zime po građevini se posipaju velike količine soli što je jedan od glavnih razloga oštećenja vijadukta. Sol, smrzavanje i otapanje leda, ulazak klorida u betonske strukture i karbonatizacija glavni su uzroci oštećenja armiranobetonskih mostova. U diplomskom radu se analiziraju mehanizmi degradacije, daje pregled tehnika istraživanja i procjenjuje uporabni vijek vijadukta Zalesina pomoću računalnog programa Life-365. Tradicionalni način projektiranja mostova u velikoj se mjeri temelji na iskustvu projektanta. U praksi, projektanti koriste gotove (unaprijed pripremljene) vrijednosti iz tablica bez potrebe za dubinskom analizom i izučavanjem njihova značenja. Osnovne veličine koje se uzimaju u obzir kod projektiranja jesu minimalna debljina zaštitnog sloja betona i maksimalna širina pukotina. Sukladno Europskim normama, recentno projektiranje osim navedenih veličina, uzima još i maksimalni vodo-cementni faktor, minimalnu količinu cementa i minimalni sadržaj zraka. Ako su poznate karakteristike ugrađenog materijala i interakcija s okolinom, može se odrediti dotrajavanje i procijeniti uporabni vijek postojećih mostova, korištenjem numeričkih modela. S ovakvim pristupom konstrukcija će imati prihvatljivo dug uporabni vijek. Model Life-365 je razvijen ne samo za procjenu uporabnog vijeka konstrukcije nego i za određivanje troškova održavanja betonskih konstrukcija izloženih kloridima.
Abstract (english)
The Zalesina viaduct is located on the snowy Ravna Gora – Delnice section of the A6 Rijeka- Zagreb motorway. During the winter, the structure is treated by a large amount of road salt, which is one of the main reasons for damage on the viaduct. Salt treatment, water freezing and ice melting, chloride invasion and carbonation are the main causes for damage in reinforced concrete bridges. This graduate thesis analyses degradation mechanisms, provides an overview of testing techniques, and estimates service life of the Zalesina viaduct using the Life-365 software. The traditional methods of bridge design are mostly based on designer experience. In practice, designers use standard (by experience) table values without the need for in-depth analysis and value interpretation. The basic quantities considered in design are the minimum thickness of the concrete protective layer and maximum crack width. In accordance with the European standards, besides the stated quantities, recent designs consider maximum water-cement factor, minimum amount of cement and minimum air content as well. If the specifications of the embedded material and the environmental impact are known, deterioration and service life of the existing bridges can be determined by using numerical models. This approach leads to acceptable service life. In addition to estimate structure service time, the Life-365 model is developed to estimate maintenance costs for concrete structures exposed to chlorides.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:237:323834
Study programmeTitle: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures
Course: Construction Management
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
Type of resourceText
File originBorn digital
Access conditionsClosed access
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Created on2021-11-22 08:56:51