剖分T型钢轴压杆件相关屈曲原理及其应用  

STUDY ON THE FLEXURE THEORY OF CUT T-STYLE STEEL IN AXIAL COMPRESS AND ITS APPLICATION

作　　者：高景辉 丁涛 王振中[3] 王万祯[3] 

机构地区：[1]北京首钢建设集团有限公司,安装分公司北京100043 [2]西安铁路运输学校,西安710014 [3]西安建筑科技大学,西安710055

出　　处：《工业建筑》2003年第5期20-22,38,共4页Industrial Construction

摘　　要：通过对剖分T型钢轴压杆件屈曲原理的理论分析 ,考虑到剖分T型钢翼缘板较强 ,对腹板有一定的约束作用 ,指出了《钢结构设计规范》(GB 5 0 0 17)中对其腹板宽厚比限值过于保守。根据剖分T型钢组成板件的局部屈曲和轴压构件整体屈曲临界力相等的等稳定条件 ,在对“规范”中的剖分T型钢截面计算结果的基础上 ,提出了腹板宽厚比限值的合理公式 ,供修订钢结构设计规范时参考 ,也为保证剖分T型钢用作轴心压杆的安全性提供了理论基础 ,促进了国产剖分T型钢的应用。By study of interactive buckling in cut T style steel,considering that its flange is stronger and provide restriction for its web,it is shown that the revised specifications in “Code for Design of Steel Structures”(GB 50017)are more conservative for the ratio of width to thickness in web.According to the balance buckling of its elements and itself,based on the calculated results of cut T style steel elements,a rational limite ratio of width to thickness in web is given for revising specifications,providing a theoretical base for the safety of cut T style steel in axial compress,promoting the application of T style steel in China.

关 键 词：T型钢 轴压杆件 屈曲系数 宽厚比 钢结构 

分 类 号：TU391[建筑科学—结构工程]