Additional Stresses in Flange Frame of Tube Structures under Lateral Loading

수평하중을 받는 튜브 구조물의 플랜지에 작용하는 부가 응력

  • 이강건 (한양대 초대형구조시스템 연구센터) ;
  • 이리형 (한양대 건축공학과)
  • Published : 2001.04.01

Abstract

A mathematical modelling technique is proposed for estimating the additional bending stresses of tube(s)-in-tube structures due to tube-tube interaction, which has a significant effects on the shear-lag phenomenon. The proposed method simulates the framed-tube structures with multiple internal tubes as equivalent multiple tubes, each composed of four equivalent orthotropic plate panels. Hence, the tube(s)-in-tube structure can be analysed by using an analogy approach where each tube is individually modelled by a continuous beam that can account for the flexural and shear deformations as well as the shear-lag effects. The numerical analysis is applicable for the structural analysis of framed-tube structures with single and multiple internal tubes, as well as those without internal tubes. The shear-lag phenomenon of such structures is studied with additiona] bending stresses and shear-lag reversal points.

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