Shear Connector Requirements for Embedded Steel Sections
Publication: Journal of Structural Engineering
Volume 125, Issue 2
Abstract
The paper evaluates bond stress and shear connector requirements in encased steel structures, which are sometimes known as steel reinforced concrete (SRC). Bond stress is important to the behavior of SRC elements, and shear connectors are required if the bond stress demand exceeds that capacity. Past research on bond stress is summarized and analyzed. An experimental study is described and evaluated. The results show that the size of the encased section and the length of the bond affect the bond capacity. Confining reinforcement has little impact upon the bond stress capacity, but increased confinement increases the post slip resistance. The bond stress is distributed exponentially under service load but more uniformly after initial slip. Cyclic loading results in deterioration of bond stress for loads greater than the slip initiation load. Shear connectors combined with natural bond stress may produce smaller load transfer than bond stress acting alone, and loads should be transferred entirely either by bond or by mechanical methods. Design recommendations for bond stress and shear connectors are developed for serviceability and ultimate load limit states.
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References
1.
ACI Committee 318. ( 1995). “Building code requirements for structural concrete.” ACI 318-95, American Concrete Institute, Farmington Hills, Mich.
2.
ACI Committee 318. ( 1995). “Commentary.” ACI 318R-95, American Concrete Inst., Farmington Hills, Mich.
3.
AIJ. ( 1991). AIJ standards for structural calculation of steel reinforced concrete structures . Architectural Institute of Japan, Shiba, Japan.
4.
AISC. ( 1994). Manual of steel construction: Load and resistance factor design, 2nd Ed., American Institute of Steel Construction, Chicago, Illinois.
5.
Brown, C. B. ( 1966). “Bond failure between steel and concrete.” J. of the Franklin Inst., 282(5), 271–290.
6.
Bryson, J. O., and Mathey, R. G. ( 1962). “Surface condition effect on bond strength of steel beams embedded in concrete.” J. Am. Concrete Inst., 59(3), 397–405.
7.
Chmielowski, R. A. ( 1997). “Force transfer in steel columns encased in concrete,” MS thesis, University of Washington, Seattle, Wash.
8.
Emoto, J. ( 1996). “Bond shear demand in composite concrete and steel members,” MS thesis, University of Washington, Seattle, Wash.
9.
EUROCODE No. 4. ( 1990). Design of composite steel and concrete structures. Part 1: General rules for buildings . Commission of European Communities, Luxembourg.
10.
Hamdan, M., and Hunaiti, Y. ( 1991). “Factors affecting bond strength in composite columns.” Proc., 3rd Int. Conf. on Steel-Concrete Composite Structures, Association for International Cooperation and Research in Steel-Concrete Composites, Fukuoka, Japan, 213–218.
11.
Hawkins, N. M. ( 1973). “Strength of concrete encased steel beams.” Civ. Engrg. Trans. Inst. of Engrgs., CE15(1), (2), 39–46.
12.
Roeder, C. W. ( 1984). “Bond stress in embedded steel shapes in concrete.” Composite and Mixed Construction, Proceedings of the U.S./Japan Joint Seminar, Charles W. Roeder, Ed., New York, 277–240.
13.
Wium, J. A., and Lebet, J. P. ( 1991). Composite columns: Force transfer from steel section to concrete encasement. Ecole Polytechnique Federale, Lausanne, Switzerland.
14.
Wium, J. A., and Lebet, J. P. ( 1992). Force transfer in composite columns consisting of embedded HEB 300 and HEB 400 sections . Ecole Polytechnique Federale, Lausanne, Switzerland.
15.
Womersley, W. D. ( 1927). “Bond between concrete and steel.” Concrete and Constr. Engrg., 22(2), 153–159.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 125 • Issue 2 • February 1999
Pages: 142 - 151
History
Received: Apr 9, 1998
Published online: Feb 1, 1999
Published in print: Feb 1999
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