engleski

Reliability and risk assessment of the steel structures and components

Summary The steel beam design requirements for limit state lateral torsion buckling are analyzed and criteria for two codes (AISC and EC-3) are compared. As the differences in the design requirements are substantial, the comparison of the achieved reliability indices is made in order to find out the model which is closer to the target reliability level. For this purpose the four example is done concerning with the various observation data of snow loads on four locations in Croatia. The statistical parameters of the experimental results are evaluated and FOSM method is used for the procedure of the calibration. As the results varies 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.

reliability; rolled beams; welded beams; specifications; FOSM theory; snow loads; distribution density functions.

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