干旱区生态环境知识资源中心(Arid): Post-fire mechanical properties of YSt-310 cold-formed steel tubular sections

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DOI	10.1016/j.jcsr.2018.11.014
	Post-fire mechanical properties of YSt-310 cold-formed steel tubular sections
	Singh, Tekcham Gishan; Singh, Konjengbam Darunkumar
通讯作者	Singh, Konjengbam Darunkumar
来源期刊	JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
ISSN	0143-974X
EISSN	1873-5983
出版年	2019
卷号	153 页码:654-666
英文摘要	An experimental programme to study the residual mechanical strength of Tata Structura-YSt 310 cold-formed steel square and rectangular tubular sections (conforming to Indian Standard 4923) after being exposed to elevated temperature is described in this paper. First, the coupon specimens extracted from the flat regions are exposed to pre-determined elevated temperature in the range similar to 300-800 degrees C, arid then the residual mechanical properties and hardness value were estimated at ambient temperature after natural air cooling. The results from the experimental programme are reported in this paper in the form of post-firestress-strain curves and associated basic material properties (e.g. elastic modulus, proof stresses, tensile strength, percentage elongation at fracture, Ramberg-Osgood material parameters etc.) as well as surface hardness values, The test results showed that most post-fire mechanical properties are appreciably different from ambient temperature material properties when exposed to a temperature higher than similar to 400 degrees C; whilst elastic modulus appears to remain unaffected even when the exposed temperature is up to similar to 800 degrees C. A near linear relationship of post-fire material strengths and hardness value was observed. Two sets empirical equations are proposed separately to predict the residual post-fire reduction factors based on the i)current experimental results of Tata Structura-YSt 310 cold-formed steel, and ii) cold-formed steel of various grades presently available in the literatures. (C) 2018 Elsevier Ltd. All rights reserved.
英文关键词	YSt-310 Cold-formed steel Tubular sections Post-fire behaviour Mechanical properties Stress-strain curve Microhardness Reduction factor
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000457510200048
WOS关键词	STRESS-STRAIN CURVES ; STAINLESS-STEEL ; STRUCTURAL-STEEL ; STRENGTH ; EXPOSURE ; BEHAVIOR ; PERFORMANCE
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS研究方向	Construction & Building Technology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216897
作者单位	Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati, India
推荐引用方式 GB/T 7714	Singh, Tekcham Gishan,Singh, Konjengbam Darunkumar. Post-fire mechanical properties of YSt-310 cold-formed steel tubular sections[J],2019,153:654-666.
APA	Singh, Tekcham Gishan,&Singh, Konjengbam Darunkumar.(2019).Post-fire mechanical properties of YSt-310 cold-formed steel tubular sections.JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH,153,654-666.
MLA	Singh, Tekcham Gishan,et al."Post-fire mechanical properties of YSt-310 cold-formed steel tubular sections".JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 153(2019):654-666.