Naslov
Rizici primjene presjeka klase 2 na cestovnim mostovima
(Risk of Utilizing Class 2 Sections for Road Bridges, Paper number 37, Full paper on enclosed CD-ROM)

Autori
Horvatić, Dragutin ; Čiček, Dario

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Journal of Constructional Steel Research, Vol.46 Special Issue, Second World Conference on Steel in Construction / Patrick, J.Dowling ; John, E.Harding - Oxford : Elsevier, 1998, 46-47 of Abstracts

Skup
Second World Conference on Steel in Construction, 11/13.05.1998, San Sebastian

Mjesto i datum
Donostia-San Sebastián, Španjolska, 11.05.1998. - 13.05.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Granična otpornost; uporabna otpornost; rijetka opterećenja; izmjenična plastifikacija; nisko ciklička umornost; plastične deformacije; faktor oblika
(Ultimate resistance; serviceability resistance; infrequent loads; alternating plasticity; low cycle fatigue; plastic deformations; shape factor.)

Sažetak
The utilization of Class 2 steel cross sections for road bridges may result in unwanted stress conditions in the ultimate state analysis. With the proposed global safety factor , the ratio Mpl/Mel = 1,1 -1,2 and more, is offen insifficient protection for maintaining the structure in the elastic range. For seviceability limit state defined with frequent and infrequent loads, wich are reapeted 120-6240 times , low cycle fatigue criteria may become important. In some cases this will decide the dimensions of cross sections. The reliability index betaSLS = 1.5 and beta ULS = 3.8, mentioned in the EC1 documents , are much too small and with the proposed global safety factor they are actually twice as big.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA