Static Response of Prestressed Girders with Openings
Publication: Journal of Structural Engineering
Volume 118, Issue 2
Abstract
Utility requirements can often dictate the use of openings in prestressed concrete beams and girders. Such provision of openings minimizes headroom and thus, leads to economy. In this paper the nonlinear analysis and design of statically loaded simply supported posttensioned prestressed concrete beams and girders with rectangular openings are presented. Several design parameters are varied such as: opening length and depth, vertical and horizontal locations of the opening, location of the applied load, type of cross section, and opening reinforcement. The results from the analytical study are substantiated by test results from 12 posttensioned prestressed concrete beams, eight of which are rectangular in section, the remaining four are of T‐section. Good agreement is shown between the theoretical and experimental results. A rational method of distributing the shear between the top and bottom chords of the opening is proposed, together with a design procedure against cracking of such chords. An illustrated design example is presented.
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References
1.
Barney, G. B., Corley, W. G., Hanson, J. M., and Parmelee, R. A. (1977). “Behavior and design of prestressed concrete beams with large web openings.” J. Prestressed Concr. Inst., 22(6), 32–61.
2.
“Building code requirements for reinforced concrete.” (1983). ACI‐318, American Concrete Inst., Detroit, Mich.
3.
Dinakaran, V., and Sastry, M. K. (1984). “Behavior of post‐tensioned prestressed concrete T‐beams with large web openings.” Indian Concr. J., 58(2), 34–38.
4.
El‐Laithy, A. (1978). “Influence of openings on the behavior of rectangular post‐tensioned prestressed concrete beams,” thesis presented to the Univ. of Windsor, at Windsor, Ontario, Canada, in partial fulfillment of the requirements for the degree of Master of Applied Science.
5.
Hibbitt, H. D., Karlsson, B. I., and Sorensen, J. (1989). ABAQUS version 4‐8, Finite element program. Hibbit, Karlsson & Sorensen, Inc., Providence, R.I.
6.
Kennedy, J. B., and El‐Laithy, A. (1982). “Cracking at openings in prestressed beams at transfer.” J. Struct. Div., ASCE, 108(6), 1250–1265.
7.
Kennedy, J. B., Chami, S., and Grace, N. F. (1990). “Dynamic and fatigue responses of prestressed concrete girders with openings.” Can. J. of Civ. Engrg., 17(3), 460–470.
8.
Mansur, M., Tan, K., and Lee, S. (1984). “Collapse loads of R/C beams with large openings.” J. Struct. Div., ASCE, 110(11), 2602–2618.
9.
Mansur, M., Tan, K., and Lee, S. (1985). “Design method for reinforced concrete beams with large openings.” ACI J., 82(4), 517–524.
10.
Regan, H. S., and Warwaruk, J. (1967). “T‐Members with large web openings.” PCI J., 12(4), 52–65.
11.
Sauve, J. S. (1970). “Prestressed concrete T‐beams with large web openings,” thesis presented to the Univ. of Alberta at Edmonton, Alberta, Canada, in partial fulfillment of the requirements for the degree of Master of Science.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 118 • Issue 2 • February 1992
Pages: 488 - 504
Copyright
Copyright © 1992 ASCE.
History
Published online: Feb 1, 1992
Published in print: Feb 1992
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