Title: A PROPOSED INDUSTRY-STANDARD BEAM CONNECTION
Date: January-February, 1971
Volume: 16
Issue: 1
Page number: 38-47
Author(s): Philip W. Birkeland
https://doi.org/10.15554/pcij.01011971.38.47

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Abstract

Structural distress in precast concrete connections may be ascribed to lack of good industry-standard connections, and lack of an accepted rational method for designing custom connections. A versatile  candidate for an industry-standard beam connection is presented. It is designed by a rational method based on the shear friction theory.

References

 1. Hofbeck, J. A., Ibrahim, I. O. and Mattock, A. H., "Shear Transfer in Reinforced Concrete," American Concrete Institute Journal, Vol. 66, No. 2, Feb. 1969, pp. 119-128. This is a thorough and basic  paper. It discusses failure modes and failure theories, but does not treat steel-to-concrete interfaces.

2. Mast, R. F., "Auxiliary Reinforcement in Concrete Connections," Journal of the Structural Division, ASCE, Vol. 94, No. ST6, Paper 6002, June 1968, pp. 1485-1504. This is a "how to design it" paper. It gives many quantitative examples (composite beam, corbel, end bearing, lapped splices, confinement) showing the wide application of shear friction. It also outlines the limitations of shear  friction, particularly the tension problem in beam-to-column connections.

3. Birkeland, P. W. and Birkeland, H. W., "Connections in Precast Concrete Construction," American Concrete Institute Journal, Vol. 63, No. 3, Mar. 1966, pp. 345-368. The paper shows many of the ways to tie a precast building together so that it will behave as well as a castin- place structure. It also shows other types of joints, such as a knife plate bolted beam-to-column connection.

4. "Proposed  Revision of ACI 318-63 Building Code Requirements for Reinforced Concrete," American Concrete Institute Journal, Vol. 67, No. 2, Feb. 1970, pp. 77-186. Section 11.15 (p. 115) and pp.  168-169 give the shear friction  concept proposed for the new Code. Fig. 11-ElO on p. 169 and the accompanying commentary are particularly helpful.

5. "Manual of Steel Construction," American Institute of Steel Construction, Inc., New York, 6th edition, 1963.

6. PCI Committee on Connection Details, "Summary of Basic Information on Precast  Connections," Journal of the Prestressed Concrete Institute, Vol. 14, No. 6, December 1969, pp. 14-58.