Brv čez Gruberjev prekop

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:	[A. Sinanović]
UDK:	624.21(043.2)
COBISS:	6398561
Št. ogledov:	3284
Št. prenosov:	552
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Footbridge over the Bruber canal
Sekundarni povzetek:	The graduation thesis discusses the calculation and design of the footbridge over The Gruber Canal. The structure was designed by Jaša Sketelj, a graduate of the Faculty of Architecture. The bridge is designed as a steel space frame truss to which a concrete slab is attached, which gives an extra rigidity to the structure. Since the footbridge is very slender and light weight for the design of the footbridge the ultimate limit state is not critical, but serviceability limit state is. Pedestrians who use the footbridge impose frequency on the structure, which, if the imposed frequency, is similar to own frequency can cause oscillation of the structure. In order to reduce this oscillation we have 3 measures: to increase rigidity, to reduce mass, or to increase the damping of the structure. At first a steel variant was discussed. Because this variant has insufficient own frequencies and does not comply with the recommendations that the Eurocode provides, several more computational models were tested. The final variant is a composite structure. The concrete slab, attached to the steel part of the structure, gives it additional rigidity, and thereby increases its own frequency. Since the own frequencies of the structure still do not meet the requirements Eurocodes provides, it would be necessary to perform a more detailed dynamic analysis.
Sekundarne ključne besede:	graduation thesis;civil engineering;OG-MK;footbidge;steel;frequency;oscillation;desig;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo/naloga
Komentar na gradivo:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani:	XI, 79 str., [7] pril.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Footbridge over the Bruber canal
Ključne besede (ePrints):	brv;jeklo;frekvenca;nihanje;dimenzioniranje
Ključne besede (ePrints, sekundarni jezik):	footbidge;steel;frequency;oscillation;design
Povzetek (ePrints):	V diplomski nalogi je obravnavan izračun in dimenzioniranje brvi čez Gruberjev prekop. Konstrukcijo je zasnoval Jaša Sketelj, diplomant Fakultete za arhitekturo. Brv je zasnovana kot jekleno prostorsko paličje, na katerega je pritrjena betonska plošča, ki konstrukciji daje dodatno togost. Ker je brv zelo vitka in lahka, za dimenzioniranje brvi ni kritično mejno stanje nosilnosti, ampak mejno stanje uporabnosti. Pešci, ki brv uporabljajo s svojim gibanjem na konstrukcijo vsiljujejo frekvenco, ki je lahko, če je vsiljena, podobna lastni frekvenci, povzroči nihanje konstrukcije. Da bi zmanjšali amplitudo nihanja, imamo na voljo 3 ukrepe: povečamo togost, zmanjšamo maso ali povečamo dušenje konstrukcije. Najprej je bila obravnavana jeklena varianta izvedbe. Ker je ta imela premajhne lastne frekvence in ni zadoščala priporočilom, ki jih podaja Evrokod, je bilo preizkušenih več računskih modelov. Končna varianta konstrukcije je sovprežna. Betonska plošča, pritrjena na jekleni del konstrukcije, daje konstrukciji dodatno togost in s tem povečuje njene lastne frekvence. Ker lastne frekvence konstrukcije še vedno ne izpolnjujejo zahtev, ki jih podaja Evrokod, bi bilo potrebno izvesti natančnejšo dinamično analizo.
Povzetek (ePrints, sekundarni jezik):	The graduation thesis discusses the calculation and design of the footbridge over The Gruber Canal. The structure was designed by Jaša Sketelj, a graduate of the Faculty of Architecture. The bridge is designed as a steel space frame truss to which a concrete slab is attached, which gives an extra rigidity to the structure. Since the footbridge is very slender and light weight for the design of the footbridge the ultimate limit state is not critical, but serviceability limit state is. Pedestrians who use the footbridge impose frequency on the structure, which, if the imposed frequency, is similar to own frequency can cause oscillation of the structure. In order to reduce this oscillation we have 3 measures: to increase rigidity, to reduce mass, or to increase the damping of the structure. At first a steel variant was discussed. Because this variant has insufficient own frequencies and does not comply with the recommendations that the Eurocode provides, several more computational models were tested. The final variant is a composite structure. The concrete slab, attached to the steel part of the structure, gives it additional rigidity, and thereby increases its own frequency. Since the own frequencies of the structure still do not meet the requirements Eurocodes provides, it would be necessary to perform a more detailed dynamic analysis.
Ključne besede (ePrints, sekundarni jezik):	footbidge;steel;frequency;oscillation;design
ID:	8312943