当前位置: X-MOL 学术Proc. Inst. Civ. Eng. Struct. Build. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Stability of light steel walls in compression with plasterboards on one or both sides
Proceedings of the Institution of Civil Engineers - Structures and Buildings ( IF 1.6 ) Pub Date : 2020-06-15 , DOI: 10.1680/jstbu.18.00118
R. Mark Lawson 1 , Andrew G. J. Way 2 , Martin Heywood 3 , James B. P. Lim 4 , Ross Johnston 5 , Krishanu Roy 6
Affiliation  

In light steel framing, the compression resistance of the walls may be improved by the stabilising effect of plasterboard attached to one or both sides of the wall. This paper presents the results of 28 load tests on 2·4 m high walls using 75, 100 and 150 mm deep C-sections in 1·2 to 1·6 mm thick steel with various types of board. The results were compared to the methodology in the standards BS EN 1993-1-3 and BS 5950-5, taking account of restraint to minor axis buckling. The test results showed that the lateral restraint provided by 12 or 15 mm thick fire-resistant or moisture-resistant plasterboard fixed to one flange is equivalent to an effective length reduction factor of 0·7 in the minor axis direction for a 100 mm × 1·6 mm C-section in a 2·4 m high wall. A theory is developed based on distortional buckling of the C-sections, which allows the test results to be extended to other wall heights and section sizes. The failure loads were predicted by finite-element modelling by considering initial imperfections in the C-sections and the torsional restraint due to the boards.

中文翻译:

轻钢墙在一侧或两侧均受石膏板压缩时的稳定性

在轻钢框架中,可通过附着在墙的一侧或两侧的石膏板的稳定作用来提高墙的抗压强度。本文介绍了在1·2至1·6 mm厚的各种类型木板上使用75、100和150 mm深的C型截面在2·4 m高的墙壁上进行28次载荷测试的结果。考虑到对短轴屈曲的约束,将结果与标准BS EN 1993-1-3和BS 5950-5中的方法进行了比较。测试结果表明,将12或15毫米厚的耐火或防潮石膏板固定在一个凸缘上所提供的横向约束相当于100 mm×1的短轴方向上的有效长度减小系数0·7。高2·4 m的墙壁中的·6 mm C型截面。根据C型截面的变形屈曲提出了一种理论,这样可以将测试结果扩展到其他壁高和截面尺寸。通过考虑C形截面的初始缺陷和板引起的扭转约束,通过有限元建模来预测破坏载荷。
更新日期:2020-06-30
down
wechat
bug