Analiza armiranobetonskih okvirov s polnili na potresno obtežbo

diplomska naloga

Luka Novak (Avtor), Matjaž Dolšek (Mentor), Janko Logar (Član komisije za zagovor)

Povzetek

V diplomski nalogi je predstavljen vpliv polnil na obnašanje armiranobetonskih okvirov med potresi. Opisane so teoretične osnove in pravila za potresno analizo takih konstrukcij v skladu s standardom Evrokod 8. Za elastično analizo je bil uporabljen program ETABS. Opravljena je bila študija vpliva polnil na štirietažni armiranobetonski stavbi, kjer je bil zajet tudi primer mehke spodnje etaže. Analiziran je bil vpliv modelnih negotovosti na globalne in lokalne potresne zahteve. Poleg klasičnega modela z eno nadomestno diagonalo smo polnila modelirali še z upoštevanjem dveh ali treh diagonal ter s ploskovnimi elementi. Ugotovljeno je, da z makro modeli na osnovi več diagonal nekoliko natančneje napovemo lokalne vplive polnil na prečne sile v stebrih in gredah, kot z modelom na osnovi ene diagonale. Vendar se izkaže, da je lokalne vplive na steber možno simulirati tudi na osnovi najbolj enostavnega modela, ki temelji na eni tlačni diagonali, če del sile iz diagonale upoštevamo pri računu prečne sile na steber.

Ključne besede

gradbeništvo;promet;diplomska dela;UN;armiranobetonski okvir;vpliv polnil;potresna obtežba;standardi EVROKOD 8;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2013
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	[L. Novak]
UDK:	624.012.4(043.2)
COBISS:	6393697
Št. ogledov:	1375
Št. prenosov:	328
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Seismic analysis of infilled reinforced concrete frames
Sekundarni povzetek:	The effect of masonry infills on seismic behaviour of reinforced concrete frames is described. In the first part of the thesis, the theoretical background and procedure for seismic analysis of such structures according to Eurocode 8 are presented. The effect of masonry infill was demonstrated by means of an example of four-storey reinforced-concrete building, including the consideration of the effect of soft storey mechanism. All linear elastic analyses were performed with ETABS software. The main objective of the study was to assess the impact of the modelling uncertainties on the global and local engineering demand parameters. In addition to the classical macro model of infill, which is based on single-strut approach, the infill panel was modelled by the two-strut or the three-strut approach as well as by the shell elements taking into account the nonlinear contact between the masonry infill and the adjacent frame. It was found that the macro models based on multiple struts can simulate local effects on columns with slightly greater accuracy as those obtained on the basis of single-strut model. However, it is shown that the local effects on columns due to infills can be simulated also by the simple single-strut model if a certain proportion of the force in the strut is considered for the evaluation of the internal forces in the columns.
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo/naloga
Komentar na gradivo:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani:	XI, 35 str., [8] str. pril
ID:	8726618