diplomska naloga
Povzetek
V diplomski nalogi je obravnavana potresna analizi enodružinske zidane stavbe, zgrajene leta 1993, na
obrobju Ljubljane. V prvem delu diplomske naloge je predstavljeno teoretično ozadje določitve potresne
obtežbe in nosilnosti tako posameznih zidov kot tudi celotne konstrukcije. Pri določitvi nosilnosti so
upoštevani trije značilni porušni mehanizmi, ki nastanejo v zidanih stavbah, pri kombinaciji vodoravne
in navpične obtežbe: upogibni mehanizem in oba strižna mehanizma. V drugem delu je izračunana
potresna odpornost obravnavanega objekta. Za trdnost materiala so upoštevane srednje vrednosti, ki so
zmanjšane za faktor zaupanja. Potrebno je določiti lastne teže posameznih konstrukcijskih sklopov in
mase celotne konstrukcije. Potresna sila je določena z metodo z vodoravnimi silami, pri čemer je bil
upoštevan največji spektralni pospešek ter faktor obnašanja 1,5. V analizi je bila obravnavana le spodnja
etaža, saj so tam največje potresne obremenitve. Najprej je bila ocenjena nosilnost celotne konstrukcije
po elastični analizi, pri čemer je upoštevana popolna prerazporeditev sil iz preobremenjenih zidov na
zidove, ki imajo še rezerve. Naredili smo tudi poenostavljeno nelinearno analizo pri čemer je bila tako
dobljena nosilnost za y smer 797 kN, kar je le za približno 10% manjša vrednost od nosilnosti, ki smo
jo ocenili na osnovi rezultatov linearno elastične analize (880 kN). Ugotovljeno je bilo, da projektna
potresna obremenitev presega projektno nosilnost zidov iz česar sklepamo, da objekt v celoti ne zadosti
zahtevam standarda Evrokod 8.
Ključne besede
gradbeništvo;diplomska dela;potresno inženirstvo;Evrokod;zidane stavbe;potisna analiza;potresna odpornost;mehanske karakteristike;materiali;strižna trdnost;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2015 |
Tipologija: |
2.11 - Diplomsko delo |
Organizacija: |
UL FGG - Fakulteta za gradbeništvo in geodezijo |
Založnik: |
[F. Andolšek] |
UDK: |
624.042.7:728.3(497.4)(043.2) |
COBISS: |
7272289
|
Št. ogledov: |
2203 |
Št. prenosov: |
494 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Assessment of seismic resistance of a single-family building in the suburb of Ljubljana |
Sekundarni povzetek: |
The thesis addresses assessment of seismic resistance of a single-family masonry building, built in 1993,
in the suburb of Ljubljana. The theoretical background for determination of design seismic loads and
capacity of both masonry walls as well as the whole structure is presented in the first part of the thesis.
The determination of the strength of masonry walls is also described with consideration of three failure
mechanisms that occur in masonry wall: sliding shear failure, shear failure with diagonal cracks, flexural
failure. In the second part follows practical example where we calculate seismic resistance of the
building. For the strength of materials we take into account the mean values reduced by a confidence
factor. It is necessary to determine the weight of individual structural assemblies and the mass of the
whole structure. Seismic force is determined by the method of horizontal forces, where is taken into
account the maximum spectral acceleration, and behaviour factor 1,5. Seismic resistance is then checked
only for the ground floor since there the greatest storey shear force occurs. Firstly the base shear was
calculated on the basis of elastic analysis by taking into account the full redistribution of seismic forces
to those walls which still had reserves. The simplified nonlinear analysis was also performed. Sodetermined
base shear in y direction amounted to 797 kN, which is only about 10% less than the base
shear estimated from linear elastic analysis (880 kN). It was found that design seismic load exceeded
the estimated design value of base shear strength, which indicated that the investigated building does
not comply the safety requirements of the Eurocodes 8. |
Sekundarne ključne besede: |
civil engineering;graduation thesis;earthquake engineering;Eurocode;masonry building;pushover analysis;seismic assessment;mechanical characteristics of built materials;shear strength; |
Vrsta datoteke: |
application/pdf |
Vrsta dela (COBISS): |
Diplomsko delo/naloga |
Komentar na gradivo: |
Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo |
Strani: |
X, 36 str. |
ID: |
9056903 |