magistrsko delo št.: 158/II. GR
Jure Starc (Author), Matjaž Dolšek (Mentor), Anže Babič (Co-mentor), Jure Žižmond (Co-mentor)

Abstract

Nezanimanje ljudi in državnih organov za krepitev potresne odpornosti objektov je posledica pomanjkanja lastnih izkušenj s katastrofalnimi naravnimi pojavi. Varljiv je predvsem občutek varnosti v primeru potresov, saj so močni potresi redki, vendar pa je njihov potencial za negativne posledice zelo visok. Da bi med študentkami in študenti vzpostavili nepristransko dojemanje potresnega tveganja, smo izvedli seizmični stresni test stavbnega fonda Univerze v Ljubljani. Podatke za namen raziskave nam je v večji meri zagotovila Univerza v Ljubljani. Dodatne informacij smo pridobili s pregledom stavb in projektne dokumentacije ter na osnovi že opravljenih analiz. Na ta način smo razvili model izpostavljenosti stavbnega fonda ter ga nato dopolnili z modelom potresne nevarnosti, modelom potresne ranljivosti in modelom posledic potresa na stavbe in ljudi. Vse modele smo nato vključili v analizo potresnega tveganja. V okviru magistrske naloge smo razvili parametričen model za oceno potisnih krivulj stavb, kar omogoča oceno potresne ranljivosti stavbe na osnovi nelinearnih dinamičnih analiz poenostavljenega nelinearnega modela stavbe. Rezultati študije kažejo, da je ogroženost človeških življenj na Univerzi v Ljubljani zaradi nevarnosti potresov previsoka. Srednja letna povratna doba za pojav izgube življenja med študenti zaradi potresov znaša le 6 let, kar presega sprejemljivo potresno tveganje za izgubo življenja v primeru posodobljenega stavbnega fonda za faktor 26. Poleg tega so previsoke tudi finančne izgube, saj smo ocenili, da znaša pričakovani letni strošek za odpravo škode na stavbnem fondu 1.040.000 EUR, kar je skoraj četrtina vseh sredstev iz razvojnega stebra za financiranje Univerze v Ljubljani.

Keywords

gradbeništvo;magistrska dela;GR;seizmični stresni test;stavbni fond;Univerza v Ljubljani;potresna ranljivost;potresne nevarnost;potresno tveganje;časovno-opredeljen model posledic potresov;N2 metoda,;OpenSees;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [J. starc]
UDC: 624.042.7:725(497.4)(043.3)
COBISS: 37776387 Link will open in a new window
Views: 720
Downloads: 276
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Other data

Secondary language: English
Secondary title: Seismic stress test of the building stock of the University of Ljubljana
Secondary abstract: The lack of interest on the part of the population and the national authorities in strengthening the earthquake resistance of buildings is a consequence of the lack of their own experience with catastrophic natural phenomena. The feeling of safety in the event of earthquakes is particularly deceptive because strong earthquakes are rare, but their potential for adverse effects is very high. In order to establish an unbiased perception of seismic risk among students, we conducted a seismic stress test of the building stock of the University of Ljubljana. The data for the purposes of this study was mainly provided by the University of Ljubljana, and some of the information was also obtained by inspecting the buildings and project documentation and on the basis of previous analyses. We developed an exposure model for the building stock, which was supplemented by a seismic hazard model, a seismic fragility model and an earthquake impact model for buildings and people. All models were then included in the seismic risk analysis. We developed a parametric model for estimating the pushover curves of buildings, which allows to analyse the seismic fragility of a single building by nonlinear dynamic analyses of a simplified nonlinear building model. The results of the study show that the seismic fatality risk at the University of Ljubljana is too high. The average annual return period for loss of life among students is only 6 years, which exceeds the acceptable fatality risk for an updated building stock by a factor of 26. Moreover, the financial losses are too high. The annual cost of repairing seismic damage to the building stock was estimated at EUR 1,040,000, which represents almost a quarter of all funds allocated to the University of Ljubljana from the Development of Funding pillar.
Secondary keywords: civil engineering;master thesis;seismic stress test;building stock;University of Ljubljana,;seismic hazard;seismic fragility;seismic risk;time-based earthquake consequence model;N2 method;OpenSees;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XX, 100 str.
ID: 12379711