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Analytical Study on Prestressed Steel I-Beam Strengthened in Compression by Angles

Analytical Study on Prestressed Steel I-Beam Strengthened in Compression by Angles Prestressed steel structures have many advantages over steel, reinforced cement concrete and prestressed concrete structures. This paper is an attempt to compare the performance of prestressed steel I-beam and that strengthened in compression by welding two angles. Iterative calculations involved in analysis were performed with the help of program developed by the authors, which takes the choice of I-section, type of beam and span required as inputs. Straight tendon configuration over the whole span was considered for comparison. The study of the variation among different parameters revealed that the load carrying capacity is not directly proportional to the prestressing force in case of an unsymmetrical I-section for eccentricity less than a minimum value. But in case of a symmetrical section, the load carrying capacity is directly proportional to the prestressing force for all eccentricities. However, it was observed that the material of the cross-section is effectively utilised when an unsymmetrical I-section is prestressed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India): Series A Springer Journals

Analytical Study on Prestressed Steel I-Beam Strengthened in Compression by Angles

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References (10)

Publisher
Springer Journals
Copyright
Copyright © 2014 by The Institution of Engineers (India)
Subject
Engineering; Civil Engineering
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-013-0049-4
Publisher site
See Article on Publisher Site

Abstract

Prestressed steel structures have many advantages over steel, reinforced cement concrete and prestressed concrete structures. This paper is an attempt to compare the performance of prestressed steel I-beam and that strengthened in compression by welding two angles. Iterative calculations involved in analysis were performed with the help of program developed by the authors, which takes the choice of I-section, type of beam and span required as inputs. Straight tendon configuration over the whole span was considered for comparison. The study of the variation among different parameters revealed that the load carrying capacity is not directly proportional to the prestressing force in case of an unsymmetrical I-section for eccentricity less than a minimum value. But in case of a symmetrical section, the load carrying capacity is directly proportional to the prestressing force for all eccentricities. However, it was observed that the material of the cross-section is effectively utilised when an unsymmetrical I-section is prestressed.

Journal

Journal of The Institution of Engineers (India): Series A – Springer Journals

Published: Jan 22, 2014

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