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作者:

Law, KiamHai (Law, KiamHai.) | Zhao, Yang (Zhao, Yang.) | Yan, Weiming (Yan, Weiming.) (学者:闫维明) | Yu, Cheng (Yu, Cheng.)

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摘要:

The Direct Strength Method (DSM) is a recently adopted design approach by the North American Specifications for Cold-Formed Steel Structural Members (AISI S100) for calculating the nominal strength of cold-formed steel (CFS) sections. The critical elastic buckling load shall be obtained in order to employ the DSM in computing the nominal strength of CFS members. The AISI S100 provides simplified methods for determining the critical elastic distortional buckling load. However it is found that the AISI S100 simplified methods are over conservative for the industrial standard C and Z sections in the U.S. This paper presents revised simplified methods for calculating the critical elastic distortional buckling loads of typical CFS C and Z sections in bending and axial compression loading respectively. The new methods yield more accurate results but similar computation cost compared to the existing methods. The new methods can be added to the DSM methodologies for designing CFS members.

关键词:

elastic buckling load cold-formed steel compression strength flexural strength

作者机构:

  • [ 1 ] [Law, KiamHai]Univ N Texas, Dept Engn Technol, Denton, TX 76203 USA
  • [ 2 ] [Yu, Cheng]Univ N Texas, Dept Engn Technol, Denton, TX 76203 USA
  • [ 3 ] [Zhao, Yang]Beijing Univ Technol, Beijing Lab Earthquake Engn & Struct Retrofit, Beijing, Peoples R China
  • [ 4 ] [Yan, Weiming]Beijing Univ Technol, Beijing Lab Earthquake Engn & Struct Retrofit, Beijing, Peoples R China

通讯作者信息:

  • [Yu, Cheng]Univ N Texas, Dept Engn Technol, Denton, TX 76203 USA

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来源 :

ADVANCES IN STRUCTURAL ENGINEERING

ISSN: 1369-4332

年份: 2012

期: 12

卷: 15

页码: 2013-2019

2 . 6 0 0

JCR@2022

ESI学科: ENGINEERING;

JCR分区:3

中科院分区:4

被引次数:

WoS核心集被引频次: 1

SCOPUS被引频次: 1

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