Design of Slender Webs Having Rectangular Holes
Publication: Journal of Structural Engineering
Volume 111, Issue 4
Abstract
The ultimate shear capacity of a plate girder having a central rectangular web‐hole is shown to be the sum of three contributing factors: (1) The elastic critical load of the web; (2) the load carried by the membrane tension in the web in the post critical stage; and (3) the load carried by the flanges. The elastic critical load in shear is evaluated by using an approximate formula derived from a finite element analysis. The load carried by membrane tension is calculated using the Von Mises criterion and a suggested mean value for the angle subtended by it with the longitudinal axis of the girder; the contribution of the flanges is calculated from their plastic moment capacities. The proposed method is shown to be satisfactory by comparing the predictions obtained from it with the corresponding test observations. An ultimate load method of designing flat strip reinforcement is proposed and is aimed at restoring the strength of the web to a value that would have been obtained had the hole not been cut. The suggested design procedure is shown by a worked example.
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References
1.
Narayanan, R., and Der‐Avanessian, N. G. V., “Equilibrium Solutions for Predicting the Strength of Webs with Rectangular Holes,” Proceedings of the Institution of Civil Engineers, London, England, Part 2, Vol. 75, June, 1983, pp. 265–282.
2.
Narayanan, R., and Der‐Avanessian, N. G. V., “An Equilibrium Method for Assessing the Strength of Plate Girders Having Reinforced Web Openings,” Proceedings of the Institution of Civil Engineers, London, England, Part 2, Vol. 77, June, 1984, pp. 107–138.
3.
Narayanan, R., Der‐Avanessian, N. G. V., and Ghannam, M. M., “Small‐Scale Model Tests on Perforated Webs,” The Structural Engineer, London, England, Vol. 61B, No. 3, Sept., 1983, pp. 47–53.
4.
Narayanan, R., Der‐Avanessian, N. G. V., “Ultimate Strength of Plate Girders Having Reinforced Cutouts,” Paper presented at the International Conference on Instability and Plastic Collapse of Steel Structures held at the University of Manchester, Sept., 1983, Granada Publishers, London, England, 1983, pp. 360–369.
5.
Narayanan, R., Der‐Avanessian, N. G. V., “Elastic Buckling of Perforated Plates in Shear,” Thin Walled Structures, Applied Science Publishers, London, England, Vol. 2(1), 1984, pp. 51–73.
6.
Redwood, R. G., “Design of I Beams with Web Perforations,” Beams and Beam Columns, R. Narayanan, ed., Chapt. 3, Applied Science Publishers, London, England, 1983, pp. 95–133.
7.
Rockey, K. C., Evans, H. R., and Porter, D. M., “A Design Method for Predicting the Collapse Behaviour of Plate Girders,” Proceedings of the Institution of Civil Engineers, Part 2, Vol. 65, Mar., 1978, pp. 85–112.
8.
Timoshenko, S. P., and Gere, J. M., “Theory of Elastic Stability,” McGraw‐Hill Kogakusha Ltd., Tokyo, Japan, 1961.
Information & Authors
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Published In
Journal of Structural Engineering
Volume 111 • Issue 4 • April 1985
Pages: 777 - 787
Copyright
Copyright © 1985 ASCE.
History
Published online: Apr 1, 1985
Published in print: Apr 1985
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