双轴对称截面悬臂钢梁稳定性分析

发布时间：2018-01-06 21:13

本文关键词：双轴对称截面悬臂钢梁稳定性分析　出处：《钢结构》2016年12期 　论文类型：期刊论文

【摘要】：对两种双轴对称工字型悬臂钢梁——悬臂端无封口梁和悬臂端有封口梁,在组合荷载作用下的稳定性进行了研究,分析表明:对于无封口梁的双轴对称工字型悬臂钢梁,可以按GB 50017—2003《钢结构设计规范》方法进行整体稳定计算,精度能够满足工程设计要求;而对于有封口梁的双轴对称工字型悬臂钢梁,按GB 50017—2003方法进行稳定计算,误差较大,该方法欠妥。分析给出了有封口梁的双轴对称工字型悬臂钢梁的稳定计算式,可供工程设计参考。
[Abstract]:The stability of two kinds of double axisymmetric I-shaped cantilever steel beams, the cantilever end unsealed beam and the cantilever end sealed beam, under the combined load is studied in this paper. The analysis shows that the overall stability of double axisymmetric I-shaped cantilever beams with unsealed beams can be calculated according to GB50017-2003 Code for Design of Steel structures. The precision can meet the requirements of engineering design; However, for the double axisymmetric I-shaped cantilever beam with sealing beam, the stability calculation is carried out according to GB50017-2003 method, and the error is large. The stability calculation formula of double axisymmetric I-shaped cantilever steel beam with seal beam is given, which can be used as a reference for engineering design.
【作者单位】：西北农林科技大学水利与建筑工程学院;
【基金】：中央高校基本科研专项重点项目(ZD2013014) 中央高校科技创新专项(2452015183)
【分类号】：TU392.1
【正文快照】： 1概述钢结构设计中经常遇到的悬臂钢梁有两种:一种是悬臂端没有封口梁;另一种是悬臂端有封口梁,如图1所示。其中图1a所示为悬臂端没有封口梁的悬臂梁,图1b所示为悬臂端有封口梁的悬臂梁,图1c所示为截面的弯扭变形。这两种悬臂梁都会受到悬臂端的梁或柱传来的端部集中荷载和楼

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