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master's thesis
Diskretna optimizacija ovješenih mostova
diplomski rad
Split: University of Split, Faculty of Civil Engineering, Architecture and Geodesy, 2015. urn:nbn:hr:123:880997
Đerek, Andrea
University of Split
Faculty of Civil Engineering, Architecture and Geodesy
Department of Concrete Structures and Bridges
Portugal: University of Coimbra
Portugal: Faculty of Sciences and Technology in Coimbra
Portugal: Department of Civil Engineering

Institutional repository: FCEAG Repository

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Đerek, A. (2015). Diskretna optimizacija ovješenih mostova : diplomski rad (Master's thesis). Split: University of Split, Faculty of Civil Engineering, Architecture and Geodesy; Portugal: University of Coimbra, Portugal: Faculty of Sciences and Technology in Coimbra. Retrieved from https://urn.nsk.hr/urn:nbn:hr:123:880997

Đerek, Andrea. "Diskretna optimizacija ovješenih mostova : diplomski rad." Master's thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy; Portugal: University of Coimbra, Portugal: Faculty of Sciences and Technology in Coimbra, 2015. https://urn.nsk.hr/urn:nbn:hr:123:880997

Đerek, Andrea. "Diskretna optimizacija ovješenih mostova : diplomski rad." Master's thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy; Portugal: University of Coimbra, Portugal: Faculty of Sciences and Technology in Coimbra, 2015. https://urn.nsk.hr/urn:nbn:hr:123:880997

Đerek, A. (2015). 'Diskretna optimizacija ovješenih mostova : diplomski rad', Master's thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy; Portugal: University of Coimbra, Portugal: Faculty of Sciences and Technology in Coimbra, accessed 24 November 2024, https://urn.nsk.hr/urn:nbn:hr:123:880997

Đerek A. Diskretna optimizacija ovješenih mostova : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Civil Engineering, Architecture and Geodesy; Portugal: University of Coimbra, Portugal: Faculty of Sciences and Technology in Coimbra; 2015 [cited 2024 November 24] Available at: https://urn.nsk.hr/urn:nbn:hr:123:880997

A. Đerek, "Diskretna optimizacija ovješenih mostova : diplomski rad", Master's thesis, University of Split, Faculty of Civil Engineering, Architecture and Geodesy, Split; Portugal: University of Coimbra, Portugal: Faculty of Sciences and Technology in Coimbra, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:123:880997

Metadata
TitleDiskretna optimizacija ovješenih mostova : diplomski rad
Title (english)Discrete Optimum Design of Cable-Stayed Bridges : Master's Thesis
AuthorAndrea Đerek
MentorAlen Harapin (mentor)
Committee memberAlen Harapin
Committee memberJure Radnić
Committee memberNeno Torić
GranterUniversity of Split
Faculty of Civil Engineering, Architecture and Geodesy
(Department of Concrete Structures and Bridges)
Split
GranterPortugal: University of Coimbra
Portugal: Faculty of Sciences and Technology in Coimbra
(Portugal: Department of Civil Engineering)
Defense date and country2015-09-04, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Civil Engineering
Supporting Structures
Abstract
Ovješeni mostovi su vrlo zahtjevne konstrukcije kod kojih se rasponski sklop ponaša kao kontinuirana greda elastično pridržana pomoću zakrivljenih kabela. Predstavljaju estetski privlačno i učinkovito strukturno rješenje za srednje do velike raspone i naširoko se upotrebljavaju širom svijeta. Ponašanje ovih konstrukcija određeno je krutošću nosivih elemenata (pilona, rasponskog sklopa i vješaljki) i prijenosu sile u vješaljkama. Projektiranje ovješenih mostova je iterativni proces u kojem projektant mora zadovoljiti sve kriterije povezane sa sigurnošću, upotrebom i cijenom mijenjajući određene strukturne parametre. U slučaju ovješenih mostova projekt mosta uključuje rješavanje velikog broja različitih problema kao što su odabir konstrukcijskog sustava, nelinearnost, proces izgradnje, ponašanje konstrukcije pod dinamičkim opterećenjem, itd. Projekt takve konstrukcije generira veliku količinu informacija za vrijeme analize i projektiranja. Optimizacijski algoritam može uključivati kao projektirane varijable mehanička, geometrijska i sekcijska svojstva. Tako one mogu biti upotrijebljene u procesu projektiranja za određivanje poprečnog presjeka strukturnih elemenata i/ili određivanje sile prednapinjanja u kabelima za dobivanje optimalne duljine i visine stupova i raspona. Većina metoda za dobivanje optimalnog rješenja pretpostavlja da su projektirane varijable kontinuiranog tipa. Općenito, projektanti su ograničeni na odabir veličine elemenata iz diskretnog skupa dostupnih veličina i problem u ovom radu je riješen na takav način. Stroga diskretna optimizacija je NP-hard problem (eksponencijalno vrijeme vs polinomsko vrijeme za kontinuiranu optimizaciju) značajno teža nego za kontinuirani problem. U ovom radu prikazana je strukturna analiza i diskretna optimizacija ovješenih mostova. Kao optimizacijska metoda upotrijebljena je segmentalna optimizacijska metoda za dobivanje optimalnih dimenzija poprečnog presjeka ploče i pilona te konačne sile u vješaljkama.
Abstract (english)
Cable-stayed bridges are highly redundant structures in which the deck behaves like a continuous beam elastically supported by the inclined stays. They represent an aesthetically appealing and efficient structural solution for medium-to-long spans and are widely used all over the world. Their behaviour is governed by the stiffness of the load-bearing elements (pylons, deck and cable stays) and the cable force distribution. The structural design of cable-stayed bridges is iterative process in which designers have to satisfy all criteria's relating to safety, use, economy, by changing certain structural parameters. In case of cable-stayed bridges the design of bridge includes solving a lot of different problems such as the choice of structural system, nonlinearity, construction process, dynamic behaviour, etc. Project of such structures generated massive amount of information during analysis and design process. The optimization algorithm can include as design variables mechanical, geometrical and sectional properties. Thus, they can be widely used in design process from dimensioning of cross-sections of structure elements though determine of prestressing force of cable to obtain optimal length and height of towers and spans. Most of the methods for the optimum design of engineering structures make the assumption that member size variables are continuous. Generally, designers are restricted to choosing member sizes from a discrete set of commonly available sizes and this problem is solved here. The rigorous discrete optimum design is a NP-hard problem (exponential time vs polynomial time for continuous optimization) significantly more difficult than the continuous problem. In this work it is presented structural analysis and discrete optimization of concrete cable-stayed bridge. As optimization method is used segmental optimization method to obtain optimal dimensions of deck and tower cross-section and adjustment cable forces.
Keywords
Keywords (english)
Languageenglish
URN:NBNurn:nbn:hr:123:880997
Study programmeTitle: Civil Engineering
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 conditionsOpen access
Terms of useLicence In copyright icon
Public notePredmet: Mostovi. Ovaj diplomski rad je izrađen na Fakultetu znanosti i tehnologije Sveučilišta u Coimbri, Portugal, a obranjen na Fakultetu građevinarstva, arhitekture i geodezije Sveučilišta u Splitu. Supervisor: Luis Miguel da Cruz Simoes (Universidade de Coimbra, Faculdade de Ciencias e Tecnologia, Coimbra, Portugal)
Created on2015-11-03 16:30:30