Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28377
Title: Practical second-order analysis and design of single angle trusses by an equivalent imperfection approach
Authors: Cho, SH
Chan, SL 
Keywords: Angles
Buckling
Eccentricities
Initial imperfections
Issue Date: 2005
Publisher: Techno Press
Source: Steel and composite structures, 2005, v. 5, no. 6, p. 443-458 How to cite?
Journal: Steel and composite structures 
Abstract: Steel angles are widely used in roof trusses as web and chord members and in lattice towers. Very often angle members are connected eccentrically. As a result, not only an angle member is under an axial force, but it is also subject to a pair of end eccentric moments. Moreover, the connection at each end provides some fixity so neither pinned nor the fixed end represents the reality. Many national design codes allow for the effects due to eccentricities by modifying the slenderness ratio and reducing the compressive strength of the member. However, in practice, it is difficult to determine accurately the effective length. The concept behind this method is inconsistent with strength design of members of other cross-sectional types such as I or box sections of which the buckling strength is controlled by the Perry constant or the initial imperfection parameters. This paper proposes a method for design of angle frames and trusses by the second-order analysis. The equivalent initial imperfection-to-length ratios for equal and unequal angles to compensate the negligence of initial curvatures, load eccentricities and residual stresses are determined in this paper. From the obtained results, the values of imperfection-to-length ratios are suggested for design and analysis of angle steel trusses allowing for member buckling strength based on the Perry-Robertson formula.
URI: http://hdl.handle.net/10397/28377
ISSN: 1229-9367
EISSN: 1598-6233
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

4
Last Week
0
Last month
Citations as of Oct 15, 2017

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
0
Citations as of Oct 16, 2017

Page view(s)

48
Last Week
0
Last month
Checked on Oct 15, 2017

Google ScholarTM

Check



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.