Deformation limit and ultimate strength of welded T-joints in cold-formed RHS sections
Deformation limit and ultimate strength of welded T-joints in cold-formed RHS sections
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DOI：
10.1016/s0143-974x(99)00063-2
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发表时间：
2000-02-01
影响因子：
4.1
通讯作者：
Zhao, XL
中科院分区：
文献类型：
--
作者：
Zhao, XL
本文介绍了冷弯薄壁型钢T型焊接节点的变形极限和极限承载力。研究了腹板屈曲破坏模式和翼缘屈曲破坏模式，确定了某变形极限（翼缘压痕）下的强度可作为T型节点的极限强度。变形极限主要取决于比值β（=B（1）/B（0））。根据冷弯薄壁型钢T型节点的试验结果，得出当0.6 ≤ β ≤ 0.8或2 γ ≤ 15时，变形极限为3%b（o）;当0.3 ≤ β 15时，变形极限为1%b（o）。并与现有的设计公式进行了比较。提出了腹板屈曲破坏和翼缘破坏的极限承载力计算公式。(C)2000爱思唯尔科技有限公司版权所有。
This paper describes the deformation limit and ultimate strength of welded T-joints in cold-formed RHS sections. Both web buckling failure mode and chord flange failure mode are investigated, The strength at a certain deformation (chord flange indentation) limit can be regarded as the ultimate strength of a T-joint. The deformation limit mainly depends on the ratio beta (=b(1)/b(0)). Based on the test results of T-joints in cold-formed RHS sections, the deformation limit is found as 3%b(o) for 0.6 less than or equal to beta less than or equal to 0.8 or 2 gamma less than or equal to 15, and 1%b(o) for 0.3 less than or equal to beta15. The ultimate strength so determined is compared with the existing design formulae. Proposed formulae for ultimate strength of web buckling failure and chord flange failure are given. (C) 2000 Elsevier Science Ltd. All rights reserved.