Projektiranje ponapete betonske plošče

Povzetek

Ključne besede

Podatki

Jezik:	Slovenski jezik
Leto izida:	2013
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	[S. Vrbovšek]
UDK:	624.012.46:624.073(043.2)
COBISS:	6467681
Št. ogledov:	2541
Št. prenosov:	444
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Design of post-tensioned concrete slab
Sekundarni povzetek:	In the graduation thesis a design of post-tensioned concrete flat slab is presented. The slab of dimensions 25,5/30,4 m is post-tensioned with unbounded tendons. The thesis is composed of three parts. In the first part, the design procedure according to the code SIST EN 1992-1-1 is briefly presented. In the second part, the slab is analyzed and designed by using the equivalent beams in two directions of the slab. The post-tensioned effects are taken into account by applying the equivalent loading. The losses due to the short term and the long term effects are calculated. Finally, the obtained results are checked with respect to the demands of SIST EN 1992-1-1 code. In the last part of the thesis, the same slab is analyzed by the finite element method computer code. It is modeled by using the quadrilateral plate finite elements and the tendon finite elements. Finite element method results are used to check the punching shear safety and the size of the cracks in concrete.
Sekundarne ključne besede:	graduation thesis;civil engineering;flat slab;post-tension;unbonded tendons;equivalent loads;prestress loses;design checks of post-tensioned concrete;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani:	XIV, 96 str.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Projektiranje ponapete betonske plošče
Ključne besede (ePrints):	ponapenjanje;nepovezani kabli;nadomestni vpliv kabla;izgube napenjalne sile;kontrole prednapetega betona
Ključne besede (ePrints, sekundarni jezik):	flat slab;post-tension;unbonded tendons;equivalent loads;prestress losses;design checks of post-tensioned concrete
Povzetek (ePrints):	V diplomski nalogi obravnavam pravokotno, gladko betonsko ploščo na stebrih. Plošča je tlorisnih dimenzij 25,5/30,4 m in je naknadno prednapeta z nepovezanimi kabli. Vsebina naloge je razdeljena na tri dele. V prvem delu so predstavljene teoretične osnove napenjanja skladno s standardom SIST EN 1992-1-1. V drugem delu je plošča analizirana na poenostavljen način s pomočjo dveh nadomestnih nosilcev v vzdolžni in prečni smeri. Vpliv prednapetja je upoštevan z nadomestno obtežbo. Ocenjena je velikost začetnih in časovno odvisnih izgub prednapetja. Pri tem je izvedena kontrola, če napetostno in deformacijsko stanje v prednapeti konstrukciji izpolnjuje zahteve iz standarda SIST EN 1992-1-1. V tretjem delu naloge je prednapeta plošča na stebrih analizirana z uporabo idealiziranega računskega modela, izdelanega z metodo končnih elementov. Površina plošče je modelirana s štirivozliščnimi ploskovnimi končnimi elementi, kabli pa z ukrivljenimi linijskimi končnimi elementi. Dodatno je preverjena še varnost plošče proti preboju ter izvedena je kontrola širine razpok.
Povzetek (ePrints, sekundarni jezik):	In the graduation thesis a design of post-tensioned concrete flat slab is presented. The slab of dimensions 25,5/30,4 m is post-tensioned with unbounded tendons. The thesis is composed of three parts. In the first part, the design procedure according to the code SIST EN 1992-1-1 is briefly presented. In the second part, the slab is analyzed and designed by using the equivalent beams in two directions of the slab. The post-tensioned effects are taken into account by applying the equivalent loading. The losses due to the short term and the long term effects are calculated. Finally, the obtained results are checked with respect to the demands of SIST EN 1992-1-1 code. In the last part of the thesis, the same slab is analyzed by the finite element method computer code. It is modeled by using the quadrilateral plate finite elements and the tendon finite elements. Finite element method results are used to check the punching shear safety and the size of the cracks in concrete.
Ključne besede (ePrints, sekundarni jezik):	flat slab;post-tension;unbonded tendons;equivalent loads;prestress losses;design checks of post-tensioned concrete
ID:	8327146