Structural safety of hollow concrete-filled circular steel members
Santrauka
The resistance of new type of hollow concrete-filled circular steel tubular members under axial compression is considered analyzing also an influence on that of the effect of steel tube and spun concrete core contact surface interaction. The experimental values of member's resistance and its mechanical model uncertainty are presented. The necessity to assess the structural safety of pre-cast members as auto-systems exposed to actions in pre-use and use working lives is discussed. Peculiarities of the mechanical model describing multi-criteria of auto-system members are analysed. The probability-based assessment of structural safety of auto-system members subjected to extreme loadings is presented and illustrated by numerical example. Incorrectness of ageing deterministic analysis method of partial safety or load and resistance factors is criticizad.