RESEARCH ARTICLE
End Restraints in Steel Angles in Lattice Towers
Sriram Kalaga*
Article Information
Identifiers and Pagination:
Year: 2017Volume: 11
Issue: Suppl-2, M2
First Page: 738
Last Page: 747
Publisher ID: TOCIEJ-11-738
DOI: 10.2174/1874149501711010738
Article History:
Received Date: 25/03/2017Revision Received Date: 15/04/2017
Acceptance Date: 03/05/2017
Electronic publication date: 15/10/2017
Collection year: 2017
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Introduction:
Test data on single angle compression members with various end connection arrangements is used to develop adjustment factors for effective buckling lengths. A connection length parameter is proposed and evaluated based on test data. Results from a total of 31 equal leg test angles with single-, double- bolts and fixed ends are used.
Methods:
Slenderness ratios considered ranged from 150 to 312. Angle sizes ranged from 38 x 38 x 3.2 (mm) to 89 x 89 x 6.4 (mm). Estimated connection lengths were about 12.5% of the member length for single-bolt joints; 24.7% for double-bolt joints and 45.6% for fixed joints. Computed effective length factors ranged from 0.544 to 0.875.
Results:
Results seem to indicate that it is possible to define and calculate connection length of a lattice tower angle member. Suggestions for incorporating connection length issues in routine designs are made.