Research on structural resistance and safety of tubular composite members

Abstract

An advantage and application of the concrete-filled steel tubes in structural practice is discussed. An ur-gency to investigate the structural performance and reli-ability of tubular composite structures is analysed. The robustness and structural safety of a new type of tubular members of annular cross-sections are considered. Limit state criteria of tubular composite members under axial and eccentric compression are investigated. The time-dependent safety margin of the members and its compo-nents as random resistance and action effect processes are presented. The survival probability analysis of the mem-bers is based on the concepts of random sequences, con-ventional resistances and transformed conditional prob-abilities and illustrated by a numerical example.