Izvorni znanstveni članak
The laterally unsupported steel beams designed by ECCS and AISC specification under snow loads in Croatia
Marta Sulyok-Selimbegović
; Faculty of Architecture, University of Zagreb, Zagreb, Croatia
Sažetak
The beam design requirements for limit state lateral torsional buckling are analysed and criteria for two codes (AISC and ECCS) are compared. As the differences in the design requirements are substantial, the comparison of the achieved reliability indeces is made in order to find out the model which is closer to the target reliability level. For this purpose four examples are analyzed concerning various observation data of snow loads on four locations in Croatia. The characteristic values from the actual snow loads on the roof constructions are derived and the laterally unsupported rolled steel beams are designed with various unbraced lengths due to the ultimate moments capacity requirements for the testing models. The statistical parametars of the experimental results are evaluated and FOSM method is used for the procedure of the calibration. As the results vary with the applied snow loads and the slenderness ratios for two examined models of the designed rolled beams, which are compared, it is necessary to achieve target values of reliability by correction of the model and resistance factors.
Ključne riječi
Hrčak ID:
318827
URI
Datum izdavanja:
15.6.2000.
Posjeta: 0 *