Research
Assistants: S.
R. Razvi (Ph.D, PDF)
W. Lipen (M.A.Sc)
D. Baingo (M.A.Sc)
M. Grira (Ph.D)
Behavior of reinforced concrete columns with concrete strengths of up to 124 MPa have been investigated by testing near full size columns under monotonically increasing concentric compression as well as constant axial compression combined with incrementally increasing lateral load reversals. The first phase included tests of 50 near-full-size columns with square and circular cross-sections under concentric compression. The second phase included 13 square and 9 circular columns tested under simulated seismic loading. The results indicate that the confinement steel requirements for high-strength concrete should be more stringent that those for normal-strength concrete. Use of high-strength transverse steel provides an effective way of increasing required lateral pressure to levels needed for higher strength concretes. An analytical model has been developed describing the stress-strain characteristics of confined high-strength concrete.
Publications:
RAZVI, S.R.,
SAATCIOGLU, M.
"Circular
High-Strength Concrete Columns under Concentric Compression," ACI Structural
Journal, Vol. 96, No.5, 1999, pp. 817-825.
SAATCIOGLU,
M., and BAINGO, D.
"Circular
High-Strength Concrete Columns under Simulated Seismic Loading," ASCE Journal
of Structural Engineering, Vol 125, No.3, pp. 272-280, 1999.
RAZVI, S. R.
and SAATCIOGLU, M.
"Stress-Strain
Relationship for Confined High-Strength Concrete," ASCE Journal of Structural
Engineering, Vol 125, No.3, pp. 281-289,1999.
SAATCIOGLU,
M.
"Behavior
and Design of Confined High-Strength Concrete Columns," High Strength Concrete,
ASCE Special Publication, ASCE, 0-7844-0419-4, 1999, pp. 173-186.
SAATCIOGLU,
M. and RAZVI, S.R.
"High-Strength Concrete Columns with Square Sections
under Concentric Compression," ASCE Journal of Structural Engineering,
Vol. 124, No. 12, 1998, pp. 1438-1447. .
RAZVI, S. R.
and SAATCIOGLU, M.
"Discussion
of Strain Localization in Confined High-Strength Concrete Columns," ASCE
Journal of Structural Engineering, Vol. 124, No. 9, 1998, pp. 1090-1092.
SAATCIOGLU,
M., PAULTRE, P. and GHOSH, S. K.
"Confinement
of High-Strength Concrete," American Concrete Institute ACI SP-176, High-Strength
Concrete in Seismic Regions," 1998, 105-136.
AZIZINAMINI,
A. and SAATCIOGLU, M.
"Strength
of High-Strength Concrete Columns under Concentric and Combined Loading",
American Concrete Institute ACI SP-176, High-Strength Concrete in Seismic
Regions," 1998, 213-235.
SAATCIOGLU,
M.
"Deformability
of Confined High-Strength Concrete Columns," Proceedings of the Structural
Engineers World Congress, San Francisco, U.S.A., July 1998
BAINGO, D.
and SAATCIOGLU, M.
"Behavior
of High-Strength Concrete Columns under Reversed Cyclic Loading," Proceedings
of the 6th U.S. National Conference on Earthquake Engineering, Earthquake
Engineering Research Institute, 1998.
RAZVI, S. R.
and SAATCIOGLU, M.
"Confinement
of High-Strength Concrete Columns for Seismic Applications," Proceedings
of the 11th World Conference on Earthquake Engineering, Mexico, Elsevier
Science Ltd. Paper No. 1855, 1996.
RAZVI, S.R.,
and SAATCIOGLU, M.
"Strength
and Deformability of Confined High-Strength Concrete Columns," American
Concrete Institute, Structural Journal, Vol. 91, No. 6, 1994, pp. 678-687.
RAZVI, S.R.
and SAATCIOGLU, M.
"Behavior
of High-strength Concrete Columns Confined with Circular Spirals," Proceedings
of the 10th European Conference on Earthquake Engineering, Vienna, Austria,
Aug.28 - Sept.2, 1994, Vol. 3, pp. 1643-1648.
SAATCIOGLU,
M. and RAZVI, S.R.
"Behavior
of High-Strength Concrete Columns Confined with Rectilinear Ties," Proceedings
of the the 5th U.S. National Conference on Earthquake Engineering, Vol.II,
1994, pp.629-638.
GHOSH, S.K. and SAATCIOGLU, M.
"Ductility and Seismic Behavior", Chapter 8 of
"High-Strength Concrete," Published by McGraw Hill (Editors: S. Ahmed and
S. Shah), 1994, pp. 237-312.
SAATCIOGLU,
M.
"High-Strength
Concrete Columns in High-Rise Buildings," Proceedings of ASCE Structures
Congress '94, The Growth of High-Rise Concrete Buildings, Atlanta, 1994,
Vol. 1, pp.37-42.
AZIZINAMINI,
A., PAULTRE, P. and SAATCIOGLU, M.
"High-Strength
Concrete Columns: State of Knowledge," Proceedings of ASCE Structures Congress
'94, Progress in Reinforced Concrete Column Design, Atlanta, 1994, Vol.
1, pp. 444-449.
RAZVI, S.R.
and SAATCIOGLU, M.
"Deformability
of High-Strength Concrete," Proceedings of the 3rd Canadian Symposium on
Cement and Concrete," Ottawa, 1993 pp.42-53.
SAATCIOGLU,
M. and RAZVI, S.R.
"Behaviour
of Confined High-Strength Concrete Columns," Proceedings of the 1993 Structural
Concrete Conference, Canadian Portland Cement Assoc., Toronto, 1993.