冷弯薄壁型钢板组约束作用研究

RESEARCH ON THE CONSTRAINT ACTION BETWEEN PLATE COMPONENTS ON COLD-FORMED THIN-WALLED STEEL

由冷弯薄壁型钢组成的受压板组体系中,某一薄弱板件先发生屈曲时,将受到相邻板件的约束而延缓板组整体屈曲的发生,或促使交界板件提前屈曲。国外20世纪七八十年代对这一现象首先进行了研究,成果在各国钢结构规范中有所体现;国内九十年代也开始涉及这一领域,相应研究被我国相关规范采纳。对国内外板组效应研究进行了综述,并对未来组合截面局部板组屈曲研究方向进行了展望。

In the compression plate system composed of cold-formed thin-walled steel,when a certain weak plate first buckles,it will be restrained by the adjacent plate and then postpone the overall buckling of the plate-group,or promote the premature buckling of the adjacent plate. In the 70 s and 80 s of the last century,this phenomenon was first studied in foreign countries. The achievements have been reflected in the norms of steel structure in various countries. China started to be involved in this field in the 1990 s,and the corresponding researches were adopted. In the paper,the researches about the plate-group effect at home and abroad were listed,and the research in the future of the local plate-group buckling in the combined section was summarized.