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Experimental research on bearing capacity of high-strength cold-formed steel stub columns(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2005年03期
Page:
36-44
Research Field:
Publishing date:
2006-09-20

Info

Title:
Experimental research on bearing capacity of high-strength cold-formed steel stub columns
Author(s):
ZHOU Tian-hua1;  HE Bao-kang2;  ZHOU Xu-hong1;  LIU Yong-jian3;  WANG Yan-min4
1. School of Architectural Engineering, Chang'an University, Xi'an 710061, China; 2. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; 3. School of Highway, Chang'an University, Xi'an 710064, China; 4. Bluescope Buildings, Shanghai 201613, China
Keywords:
high-strength cold-formed steel;  stub column;  experimental research;  effective width
PACS:
TU392.5
DOI:
-
Abstract:
In order to verify the adaptability of Chinese Technical Code of Cold-formed Thin-wall Steel Structures GB 50018-2002 for the grade G550 high-strength steel of wall thickness less than 1 mm, the 30 specimens of cold-formed steel stub columns had been tested under axial compression loading. The wall thickness of specimens are all 0.6 mm and the ratios of width to thickness are from 20 to 150. The experimental results show that initial imperfections and material properties are major influence factors for bearing capacity of specimens with low ratios of width to thickness(b/t≤40), and local buckling and effective section are major influence factors for bearing capacity of specimens with high ratios of width to thickness(b/t>40). Through comparing the test results with the design specifications of Chinese code GB 50018-2002 and other countries', the suggestions of calculating effective width for the grade G550 high-strength steel by Chinese code GB 50018-2002 are presented.

References:

[1] YANG De-mao, HANCOCK G J. Compression tests of cold-reduced high strength steel sections:I-stub columns[J].Journal of Structural Engineering, 2004,130(11):1 772-1 781.
[2] GB 50018-2002,冷弯薄壁型钢结构技术规范[S].
[3] GALAMBAS T V,JOHN W,SONS.Structural Stability Research Council,Guide to Stability Design Criteria for Metal Structures[M].New York:John Wiley and Sons,1976.
[4] 周天华,周绪红,何保康,等.G550级高强薄板钢材的材性试验研究[J].建筑科学与工程学报,2005,22(2):58-61.
[5] AISI/COS/NASPEC,North American Specification for the Design of Cold-formed Steel Structural Members[S].
[6] American Iron and Steel Institute.Specification for the Design of Cold-formed Steel Structural Members[M].Washington D C:AISI,1996.
[7] AS/NZS 4600,Cold-formed Steel Structures[S].

Memo

Memo:
-
Last Update: 2006-09-20