Vol.10, No 1, 2012 pp. 97 - 106
UDC 624.046=111
DOI: 10.2298/FUACE1201097Z
STRUCTURAL SAFETY DETERMINATION METHODS
Slavko Zdravković1, Tomislav Igić1, Radoslav Stojić2
1University of Niš, Faculty of Civil Engineering and Architecture, Serbia
2The Faculty of Information Technologies, Metropolitan University, Belgrade, Serbia
E-mail: slavko.zdravkovic@gaf.ni.ac.rs
For the purpose of determination of technical safety, and additional safety necessitated by public an social reasons, this paper considers methods of relations, probability and combined relation and probability. Also considered are functional failure and collapse failure, as well as the concept of designed service life of the structure. The ultimate safety degree is composed o the part for security regarding the technical and social consequences of collapse. The safety determination method, in technical terms too, strives to avoid the damage which would exceed the bearing capacity of the structure. The relation methods apply the safety degree which was obtained in cases when the similar structures of various dimensions were built, so it is necessary to determine the required dimensions to avoid the structural failure. The Probability method is widely applied using statistical data in the load and strength analysis. The combination of relation and probability methods provides the minimum safety degree as a reliable factor.
Key words: method, safety, structure, relation, probability, combination.
METODE ODREĐIVANJA SIGURNOSTI KONSTRUKCIJA
Radi određivanja tehničke sigurnosti kao i dopunske sigurnosti uslovljene javnim i socijalnim razlozima, razmatraju se metode odnosa, verovatnoće i kombinovano odnosa i verovatnoće. Razmatraju se funkcionalna ostećenja i slom, kao i pojam o veku trajanja konstrukcije pri projektovanju. Konačni stepen sigurnosti sastoji se iz dela za obezbeđenje u odnosu na tehničke i socijalne posledice rušenja. Metodom određivanja sigurnosti iz tehničkih aspekata pokušavamo da izbegnemo ostećenja koja bi prekoračila nosivost konstrukcije. Metode odnosa primenjuju stepen sigurnosti koji se dobija u slučaju ako su se gradile slične konstrukcije različitih dimenzija, pa je određivanje potrebnih dimenzija potrebno da konstrukcija ne popusti. Metoda verovatnoće postiže značajnu primenu korišćenjem statističkih podataka pri analizi opterećenja i otpornosti. Kombinacijom metoda odnosa i verovatnoća određuje se minimalni stepen sigurnosti kao pouzdani faktor.
Ključne reči: metoda, sigurnost, konstrukcija, odnos, verovatnoća, kombinacija