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首页> 外文会议>Third International Conference on Coupled Instabilities in Metal Structures CIMS'2000, 3rd, Sep 21-23, 2000, Lisbon-Portugal >A STUDY ON INFLUENCE OF SHEAR STRESS ON PLATE COUPLED INSTABILITY AND PLASTIC DEFORMATION CAPACITY OF H-SHAPED STEEL BEAMS
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A STUDY ON INFLUENCE OF SHEAR STRESS ON PLATE COUPLED INSTABILITY AND PLASTIC DEFORMATION CAPACITY OF H-SHAPED STEEL BEAMS

机译：剪切应力对H型钢梁板不稳定性及塑性变形能力的影响

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摘要

The H-shaped beam with large depth-thickness ratio has a tendency to be collapsed by the web buckling. And the web bears the shear stress. So this shear stress influences the coupled instability of flange plate and web plate composed H-shaped beam. In this study, the influence of shear stress in cross section to the plate coupled instability is investigated, and the estimation method of the plastic deformation capacity of H-shaped steel beams is discussed. The behavior of H-shaped steel beams is investigated by numerical analysis used by finite element method. Analysis models are cantilever beams. Parameters of analytical models are the width and the thickness of plate elements consisted H shaped beams, and the shear span ratio to depth.
机译：深厚比大的H型梁容易因腹板屈曲而塌陷。腹板承受剪应力。因此，该剪应力影响了由H形梁组成的翼缘板和腹板的耦合失稳。本研究研究了截面剪应力对板耦合不稳定性的影响，探讨了H型钢梁塑性变形能力的估算方法。通过有限元数值分析，研究了H型钢梁的性能。分析模型是悬臂梁。分析模型的参数是由H形梁组成的板单元的宽度和厚度，以及剪切跨度与深度的比。

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