Ocena potresnega tveganja za izbrane jeklene stavbe

diplomska naloga

Metod Bonča (Author), Matjaž Dolšek (Mentor), Bojan Majes (Thesis defence commission member), Sebastjan Bratina (Thesis defence commission member)

Abstract

Keywords

gradbeništvo;diplomska dela;UNI;ocena;potres;tveganje;jeklen;stavba;

Data

Language:	Slovenian
Year of publishing:	2010
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[M. Bonča]
UDC:	624.014.2:624.042.7(043.2)
COBISS:	5172065
Views:	1923
Downloads:	437
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Seismic risk assessment for selected steel buildings
Secondary abstract:	Buildings are among others also designed to withstand the earthquake actions. The ordinary buildings can suffer significant damage if subjected to the design earthquake, but it is not allowed that buildings collapse for such seismic event. This design philosophy is embedded in the codes for design of earthquake resistant structures. However, new methods for design and assessment of structures were recently introduced and involve seismic risk assessment, which is usually expressed with mean annual probability of exceedance of given limit state. The advantage of such approach, which was also used in the Thesis, is explicit determination of risk assessment by consideration of all possible seismic events, which may appear in the life period of structure. In the first part of the Thesis the theoretical background of the seismic risk assessment method is summarized. This method is later used for estimating seismic risk of two steel structures. Results indicated that structure designed according to modern code is significantly safer than that designed according to old JUS codes. On the other hand it was recognized that the probability of collapse due to earthquakes can be higher than that due to gravity loads, wind or snow. However, the disadvantage of both codes can be found in the fact that neither of the code does not guarantee equal probability of collapse for different structural systems.
Secondary keywords:	graduation thesis;assessment;seismic;risk;steel;building;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. Ljubljana, Fak. za gradbeništvo in geodezijo
Pages:	XIII, 107 str.
Type (ePrints):	thesis
Title (ePrints):	Seismic risk assessment for selected steel buildings.
Keywords (ePrints):	ocena;potres;tveganje;jeklen;stavba
Keywords (ePrints, secondary language):	assessment;seismic;risk;steel;building
Abstract (ePrints):	Nosilne konstrukcije objektov se med drugim projektirajo tudi na vpliv potresa. Pri običajnih objektih načrtovanje temelji na predpostavki, da se bo konstrukcija v primeru projektnega potresa poškodovala, ne pa porušila. Takšna filozofija projektiranja je vključena tudi v predpise za projektiranje potresnoodpornih konstrukcij, vendar se vse bolj uveljavljajo metode projektiranja, ki predvidevajo določevanje potresnega tveganja, ki ga običajno izrazimo s srednjo letno verjetnostjo prekoračitve mejnega stanja. Prednost takšnega pristopa pred običajnim projektiranjem je v tem, da eksplicitno ocenimo verjetnost prekoračitve mejnega stanja, pri čemer upoštevamo vse možne potrese, ki se lahko pojavijo v življenjski dobi konstrukcije. Takšen pristop smo uporabili tudi v diplomski nalogi. V prvem delu diplomske naloge so predstavljene teoretične osnove za oceno potresnega tveganja, v drugem delu pa smo za dva primera jeklenih stavb ocenili potresno tveganje. Izkaže se, da so konstrukcije, ki so projektirane po sodobnih predpisih bistveno bolj varne kot tiste, ki so bile projektirane po predpisih JUS, čeprav je verjetnost porušitve zaradi potresa še vedno večja kot verjetnost porušitve zaradi lastne teže, vetra ali snega. Slabost obeh predpisov, po katerih so bile projektirane stavbe, ki jih obravnavamo v diplomski nalogi, pa je v tem, da ne zagotavljata enakih verjetnosti porušitve za različne konstrukcijske sisteme.
Abstract (ePrints, secondary language):	Buildings are among others also designed to withstand the earthquake actions. The ordinary buildings can suffer significant damage if subjected to the design earthquake, but it is not allowed that buildings collapse for such seismic event. This design philosophy is embedded in the codes for design of earthquake resistant structures. However, new methods for design and assessment of structures were recently introduced and involve seismic risk assessment, which is usually expressed with mean annual probability of exceedance of given limit state. The advantage of such approach, which was also used in the Thesis, is explicit determination of risk assessment by consideration of all possible seismic events, which may appear in the life period of structure. In the first part of the Thesis the theoretical background of the seismic risk assessment method is summarized. This method is later used for estimating seismic risk of two steel structures. Results indicated that structure designed according to modern code is significantly safer than that designed according to old JUS codes. On the other hand it was recognized that the probability of collapse due to earthquakes can be higher than that due to gravity loads, wind or snow. However, the disadvantage of both codes can be found in the fact that neither of the code does not guarantee equal probability of collapse for different structural systems.
Keywords (ePrints, secondary language):	assessment;seismic;risk;steel;building
ID:	8309002