Shear Capacity of Stub‐Girders: Full Scale Tests
Publication: Journal of Structural Engineering
Volume 111, Issue 1
Abstract
This paper briefly summarizes some of the results of tests on three full‐size stub‐girders. The objectives of the investigation were to study the failure mechanism and to evaluate the effectiveness of three different types of transverse slab reinforcement in increasing the longitudinal shear capacity. Deflection characteristics and general structural behavior were also studied. In all cases, failure involved crushing of the slab over the interior end of the end stub accompanied by a shear/splitting failure in the slab over the length of the end stub. The observed ultimate load on the stub‐girders exceeded the design ultimate load by 45%, 14% and 21% respectively for Specimens K‐1, K‐2 and K‐3. Straight transverse reinforcing bars in addition to temperature and shrinkage reinforcement, had little effect on the stub‐girder capacity. The incorporation of a wide concrete flute along the slab centerline, together with bent transverse bars significantly increased the ultimate capacity and improved the ductility of the stub‐girder. The specimens tested were very stiff and would meet normal deflection requirements under service loads.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bjorhovde, R., and Zimmerman, T. J., “Some Aspects of Stub‐Girder Design,” Engineering Journal, AISC, Vol. 17, No. 3, 1980, pp. 54–69.
2.
Buckner, C. D., Deville, D. J., McKee, D. C., “Shear Strength of Slabs in Stub‐Girders,” Journal of Structural Division, ASCE, Vol. 107, No. ST2, Feb., 1981, pp. 273–280.
3.
Chan, T. W. K., Rezansoff, T., and Hosain, M. U., “Behavior of Headed Shear Studs in Stub‐Girder Stub Assemblages,” Proceedings of the 1984 CSCE Annual Conference, Halifax, Nova Scotia, May 20–25, 1984, pp. 309–326.
4.
Colaco, J. P., “A Stub‐Girder System for High‐Rise Buildings,” Engineering Journal, AISC, July, 1972, pp. 89–95.
5.
Colaco, J. P., “Partial Tube Concept for Mid‐Rise Structures,” Engineering Journal, AISC, 4th quarter, 1974, pp. 81–85.
6.
Gosselin, G. C., and Hosain, M. U., “Failure of Stub‐Girders due to Longitudinal Shear,” IABSE Periodica P‐74, May, 1984.
7.
Gunrtin, B. L., “The First International Building in Dallas, Texas,” Acier Stahl Steel No. 3, 1976.
8.
Hosain, M. U., and Tse, C., “Failure Mechanisms of Stub‐Girders,” Proceedings of the 5th ASCE EMD Specialty Conference, Laramie, Wyo., Aug. 1–3,1984, pp. 595–598.
9.
Hrabok, M. M., and Hosain, M. U., “Analysis of Stub‐Girders Using Substructuring,” Computers and Structures, Vol. 8, No. 5, 1978, pp. 615–619.
10.
Inryco, Inc., Report of Composite Girder Test, Project No. 1063, Dec. 15, 1971.
11.
Lam, Y. W., Rezansoff, T., and Hosain, M. U., “An Experimental Investigation of Stub‐Girders,” Proceedings of the International Symposium on Behaviour of Building Systems and Building Components, Vanderbilt University, Nashville, Tenn., Mar. 8–9, 1979, pp. 365–384.
12.
Mattock, A. H., Li, W. K., and Wang, T. C., “Shear Transfer in Lightweight Reinforced Concrete,” PCI Journal, Vol. 21, No. 1, pp. 20–39.
13.
“Pennzoil Place, Houston, Texas—Building Case History,” No. 47, Bethlehem Steel, Aug., 1976.
14.
Steel Structures for Buildings—Limit States Design, Canadian Standards Assoc., Standard No. CAN3‐S16.1‐M78, Rexdale, Ontario, Dec., 1978.
15.
Code for the Design of Concrete Structures for Buildings, Canadian Standards Association, Standard No. CAN3»‐A23.3‐M77, Rexdale, Ontario, Dec., 1977.
16.
Yarimici, E., Yura, J. A., and Lu, L. W., “Techniques for Testing Structures Permitted to Sway,” Lehigh University, Fritz Laboratory Report No. 273.40, May, 1966.
17.
Zimmerman, T. J. E., and Bjorhovde, R., “Analysis and Design of Stub‐Girders,” Structural Engineering Report No. 90, University of Alberta, Edmonton, Canada, Mar., 1981.
Information & Authors
Information
Published In
Copyright
Copyright © 1985 ASCE.
History
Published online: Jan 1, 1985
Published in print: Jan 1985
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.