槽型波纹板组结构的局部屈曲承载能力研究  

Study on Local Buckling of Corrugated Channel Sections

作　　者：高轩能[1] 王健[1] 

机构地区：[1]南昌大学建筑工程学院

出　　处：《南昌大学学报（工科版）》2004年第3期68-71,93,共5页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省自然科学基金资助项目(0150022);华侨大学科研基金资助项目

摘　　要：槽型波纹板组构件是组成拱型波纹钢屋盖结构的基本单元,截面中由冷成型引起的不规则波纹状褶皱和残余应力,使其工作机理复杂,难以进行精确的理论分析.另外,截面板件的宽厚比已大大超过我国冷弯薄壁型钢结构技术规范规定的上限,其局部屈曲承载能力成为影响结构极限承载能力的主要因素之一.本文根据槽型波纹板组截面的特殊工作状态和边界约束条件,采用有限元方法对其局部相关屈曲特性进行了理论分析,并与足尺模型试验结果进行了比较分析,表明拱型波纹钢屋盖结构的极限承载能力取决于其在半跨均布荷载作用下槽型波纹截面板组的局部屈曲承载能力.The arch corrugated steel roof consists of corrugated channel section by section.The accurate (analysis) of the structure is difficult theoretically due to the complex force mechanism caused by the irregular (corrugations) and residual stresses.On the other hand,since the width-to-thickness ratio of the corrugated channel sections greatly exceeds the upper limits of the rules of The Technical Code of Cold-Formed Thin-Wall Steel Structure (China),the stability bearing capacity of the structure is largely affected by local buckling behavior of the channel sections.Based on its characteristic and boundary conditions,the interactive local buckling behavior of the corrugated channel sections are studied using ANSYS in this paper.According to the comparison and analysis between the theoretical results and the data of the full-size model tests obtained by former (researchers,)it shows that the stability bearing capacity of the arch corrugated steel roof subjected to uniform load on half-span is largely determined by its local buckling behavior.

关 键 词：极限承载能力 槽型波纹板组 拱型波纹钢屋盖结构 局部屈曲 有限元法 

分 类 号：TU392.1[建筑科学—结构工程]