轻钢结构设计中腹板屈曲后强度应用的探讨

Discussion on the application of web post-buckling strength in the design of light-weight steel structure

介绍了轻钢结构在我国的形成与发展,对目前国内外的研究成果及不足之处作了总结.阐述了我国现有的设计规范、标准对构件利用屈曲后强度设计方法的规定,指出了由于缺乏对轻钢结构设计方面,尤其对轻钢结构利用腹板屈曲后强度构件,对整体结构稳定及变形影响的规定而引发的不利之处.提出了应建立考虑材料非线性和几何非线性的理论分析与计算方法.

With lightweight steel structure gradually becoming one of the main structure types in steel structure buildings, the problem of how to make use of postbuckling strength got more and more attention. In this paper, the formation and development of lightweight steel structure at home and abroad are detailed; domestic and overseas research results and deficiencies are summarized. Current code demands about the method of taking advantage of postbuckling strength are clarified and the disadvantages caused by lack of utilization of the effect of postbuckling strength on the whole structural stability and deformation are pointed out. Accordingly, several problems which are to be solved in the development of civil lightweight steel structure are put forward besides the questions mentioned.