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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.9 P.1251-1257

http://doi.org/10.1631/jzus.A0720056


Corner strength enhancement of high strength cold-formed steel at normal room and elevated temperatures


Author(s):  Ju CHEN, Wei-liang JIN

Affiliation(s):  Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   Jinwl@zju.edu.cn

Key Words:  Cold-formed steel, Corner, Elevated temperatures, High strength steel, Yield strength


Ju CHEN, Wei-liang JIN. Corner strength enhancement of high strength cold-formed steel at normal room and elevated temperatures[J]. Journal of Zhejiang University Science A, 2008, 9(9): 1251-1257.

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journal="Journal of Zhejiang University Science A",
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%T Corner strength enhancement of high strength cold-formed steel at normal room and elevated temperatures
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%A Wei-liang JIN
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%D 2008
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0720056

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T1 - Corner strength enhancement of high strength cold-formed steel at normal room and elevated temperatures
A1 - Ju CHEN
A1 - Wei-liang JIN
J0 - Journal of Zhejiang University Science A
VL - 9
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Y1 - 2008
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A0720056


Abstract: 
In this study, the suitability of current design methods for the 0.2% proof yield strength of the corner regions for high strength cold-formed steel at normal room temperature was investigated. The current standard predictions are generally accurate for outer corner specimen but conservative for inner corner specimen. Based on the experimental results, an analytical model to predict the corner strength of high strength cold-formed steel at normal room temperature was also proposed. The comparison indicated that the proposed model predicted well the corner strength of high strength cold-formed steel not only at normal room temperature but also at elevated temperatures. It is shown that the predictions obtained from the proposed model agree well with the test results. Generally the corner strength enhancement of high strength cold-formed steel decreases when the temperature increases.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[3] AS/NZS (Australian/New Zealand Standard), 2001. Cold-formed Stainless Steel Structures. AS/NZS 4673, Standards Australia. Sydney, Australia.

[4] AS/NZS (Australian/New Zealand Standard), 2005. Cold-formed Steel Structures. AS/NZS 4600, Standards Australia, Sydney, Australia.

[5] ASTM (American Society for Testing and Materials) E21-92, 1997. Standard Test Methods for Elevated Temperature Tension Tests of Metallic Materials. Annual Book of ASTM Standards. Metals-Mechanical Testing; Elevated and Low-temperature Tests; Metallography. West Conshohochken, PA.

[6] Chajes, A., Britvec, S.J., Winter, G., 1963. Effect of cold-straining on structural sheet steels. ASCE Journal of Structural Division, 89(4):1-32.

[7] Chen, J., Young, B., 2006. Corner properties of cold-formed steel sections at elevated temperatures. Thin-Walled Structures, 44(2):216-223.

[8] Chen, J., Young, B., 2007. Experimental investigation of cold-formed steel material at elevated temperatures. Thin-Walled Structures. 45(1):96-110.

[9] Karren, K.W., 1967. Corner properties of cold-formed steel shapes. ASCE Journal of Structural Division, 93(1):401-432.

[10] NAS (North American Specification), 2001. North American Specification for the Design of Cold-formed Steel Structural Members. American Iron and Steel Institute, Washington, D.C.

[11] Yang, D., Hancock, G.J., 2004a. Compression tests of high strength steel channel columns with interaction between local and distortional buckling. ASCE Journal of Structural Engineering, 130(12):1954-1963.

[12] Yang, D., Hancock, G.J., 2004b. Compression tests of cold-reduced high strength steel sections. I: stub columns. ASCE Journal of Structural Engineering, 130(11):1772-1781.

[13] Yang, D., Hancock, G.J., Rasmussen, K.J.R., 2004. Compression tests of cold-reduced high strength steel sections. II: long columns. ASCE Journal of Structural Engineering, 130(11):1782-1789.

[14] Yu, W.W., 2000. Cold-formed Steel Design. John Wiley and Sons, Inc., New York.

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