Vol.9, No 3, 2011 pp. 511 - 523
UDC 624.016:624.042.6:519.6=111
DOI: 10.2298/FUACE1103511T
IMPACT OF THE NUMBER OF COUPLING POINTS ON VALUES OF COMPOSITE BEAMS DEFORMATIONS
Mirsad Tarić1*, Emir Maslak2
1University of Priština, Faculty of Technical Sciences, Kosovska Mitrovica, Serbia
2University of Novi Pazar, Department for Technical and Technological Sciences, Novi Pazar, Serbia
E-mail: *mirsadtaric@hotmail.com
Technological development, thanks to which high-performance materials were produced, allowed engineers to design elegant structures, which in the total load have smaller share of dead weight. All this gave an opportunity to bridge the large spans. Technological development is accompanied by the development of powerful computer software that is able to, in the phase of construction modelling, include many parameters. Thanks to that, designers have a better insight into how elements behave under load, and they are able to choose how to use material and exploit their good characteristics. Composite structures, formed by coupling of steel and concrete, rank among the modern structures. Their advantage lies in the fact that the steel part of the cross-section takes part in tensile stresses transfer, while the concrete part, because of its massiveness, takes part in compressive stress transfer. Redistribution of stresses in one composite cross-section depends on many factors. In this paper, using finite element method, the influence of number coupling points on the deformation of simply supported beam, with a composite cross-section was analysed. The span of the beam is 5m.
Key words: Composite beam, shear studs, deflection, finite element method.
UTICAJ BROJA TAČAKA SPREZANJA NA VREDNOSTI DEFORMACIJA SPREGNUTIH NOSAČA
Tehnološki razvoj,zahvaljujući kojem su proizvedeni materijali visokih performansi, omogućio je projektovanje elegantnih konstrukcija koje u ukupnom opterećenju imaju sve manji udeo sopstvene težine. Sve to je dalo mogućnost premošćavanja velikih raspona. Tehnološki razvoj je praćen razvojem kompjuterskih programa, koji su u mogućnosti da u fazi projektovanja, uključe veliki broj parametara. Zahvaljujući tome konstrukter stiče bolji uvid u to kako se ponašaju elementi pod opterećenjem, pa je u mogućnosti da na najbolji način iskoristi dobre karakteristike upotrebljenih materijala. Konstrukcije nastale sprezanjem čelika i betona svrstavaju se u red savremenih konstrukcija. Njihova prednost ogleda se u tome što se čeličnom delu preseka poveravaju naponi zatezanja, dok je betonski deo, zbog svoje masivnosti, zadužen za napone pritiska. Kakva će biti preraspodela napona unutar jednog spregnutog preseka, zavisi od dosta činilaca. U ovom radu je, primenom metode konačnih elemenata, analiziran uticaj broja tačaka sprezanja na deformaciju jednog spregnutog nosača sistema proste grede i raspona 5m.
Ključne reči: spregnuti nosač, moždanici, ugib, metoda konačnih elemenata