摘要
基于单轴对称的轴心受压构建有可能发生弯扭屈曲,本文对由等边角钢组成的铁塔轴心受压构件进行了弯扭屈曲分析,发现在某一个计算长度范围内,当绕平行轴弯曲同时绕纵轴扭转的弯扭屈曲会有可能变为最小轴弯曲屈曲,如果构件中间没有支撑,而最小轴弯曲屈曲有可能会绕对称轴弯曲同时绕纵轴扭转屈曲,这一结果将有助于设计者对构件失稳的判别。
Axis compressive members based on singly symmetric are potential to be destroyed on torsional-flexural buckling. The paper analyzes torsional-flexural buckling about equal leg angle in transmission tower. From the paper, it is found that is possible to become minimum axis flexural buckling in the definite calculated length when members encircle parallel axis flexure and longitudinal axis torsion ; if without brace in the middle of the members, minimum axis flexural buckling is also possible to occur on members encircling symmetrical axis flexure and longitudinal axis torsion. The result will hel Pto estimate buckling of members.
出处
《电力勘测设计》
2008年第5期53-56,共4页
Electric Power Survey & Design
关键词
输电铁塔
轴心受压
弯扭屈曲
transmission tower
axis compressive
torsional-flexural buckling.
