摘要
针对不同类型截面,提出基于强度控制的钢梁截面设计的相关方法,重点介绍双轴对称焊接工形截面利用腹板屈曲后强度进行设计的经验公式法。为对其进行理论补充,提出最佳弯剪通用高厚比λ_(bs)的概念。算例表明,通过该法初选得到的截面一次即可通过验算,且一般能够得到用钢量较少的优良截面。
It is put forward that the design method based on force control for different types of steel-beam section and mainly introduced that an empirical formulation method considering the post buckling strength of web for the cross section design of biaxial symmetry I-beam. To supplement this method theoretically, this article also presents a conception of the most cost-efficient general ratio of attitude and thickness. Examples show that through this method, an economical section can be got only in one attempt.
出处
《钢结构》
2014年第8期27-31,共5页
Steel Construction
关键词
钢梁
强度控制
截面设计
腹板屈曲后强度
最佳通用高厚比
经验公式法
steel beam
strength control
design of cross section
post-buckling strength of web
the most general ratio of attitude and thickness
empirical formulation method
