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

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

Issue:
2005年04期
Page:
65-71
Research Field:
Publishing date:
2006-12-20

Info

Title:
Experimental research on bearing capacity of high-strength cold-formed thin-walled steel long columns
Author(s):
ZHOU Tian-hua1;  HE Bao-kang2;  ZHOU Xu-hong1;  LIU Yong-jian3;  JIANG Lu2;  LIU Yan-jun2;  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 thin-walled steel;  long column;  experimental research;  load capacity of stability
PACS:
TU392.1
DOI:
-
Abstract:
The 15 groups long column specimens of box section cold-formed grade G550 high-strength steel were tested under axial compression load. The load capacity and the failure characteristic of the specimens were analyzed. The wall thickness of specimens are all 0.6 mm; the ratios of width to thickness are 42,58,75 and the slenderness ratios are 40,60,80,100,120. The results of experimental research show that using Chinese code GB 50018-2002 to calculate the load capacity of grade G550 high-strength cold-formed thin-walled steel long column is unsafe. By comparing the test results with the calculation by Chinese code GB 50018-2002, a suggestion method of calculating load capacity for the grade G550 high-strength cold-formed thin-walled steel long columns by using Chinese code GB 50018-2002 was presented with consideration of the plate-group interaction of element. The results calculated by suggestion method agree quite well with the test results and are safety. So the suggestion method can be used for the reference to engineering design and revising the code.

References:

[1] GB 50018-2002,冷弯薄壁型钢结构技术规范[S].
[2] 周天华,周绪红,何保康,等.G550级高强薄板钢材的材性及应用[J].建筑科学与工程学报,2005,22(2):43-46.
[3] YANG De-mao,HANCOCK G J,KIM J R R.Compression tests of cold-reduced high strength steel sections:Ⅱ-long columns[J].Journal of Structural Engineering,2004,130(11):1 782-1 789.
[4] 周天华,何保康,周绪红,等.高强冷弯薄壁型钢轴压短柱受力性能试验研究[J].建筑科学与工程学报,2005,22(3):36-44.

Memo

Memo:
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Last Update: 2006-12-20