FAILURE AND STRENGTH OF HIGH-STRENGTH CONCRETE COLUMNS SUBJECTED TO ECCENTRIC LOADS
The objective of this paper is to verify the basic design rules of high-strength concrete columns. Thirty-two column specimens were tested to investigate structural behavior and strength of eccentrically loaded reinforced concrete tied columns. Main variables included in this test program were concrete compressive strength, steel amount, eccentricity, and slenderness ratio. The concrete compressive strength varied from 34.9 MPa to 98.2 MPa, and the longitudinal steel ratios were between 1.13% and 5.51%. Test results of column sectional strength are compared with the results of analyses by American Concrete Institute (ACI) rectangular stress block, trapezoidal stress block, and modified rectangular stress block. Axial force-moment-curvature analysis is also performed for predicting axial load-moment strength and compared with the test results. The ACI rectangular stress block provides overestimated column strengths for the lightly reinforced high-strength column specimens. The calculated strengths by moment-curvature analyses are highly affected by k3 values of the concrete stress-strain curve. Observed failure mode, concrete ultimate strain, and stress block parameters are discussed.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
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Corporate Authors:
American Concrete Institute (ACI)
38800 Country Club Drive
Farmington Hills, MI United States 48331 -
Authors:
- Lee, J-H
- Son, H-S
- Publication Date: 2000-1
Language
- English
Media Info
- Features: Figures; Photos; References; Tables;
- Pagination: p. 75-85
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Serial:
- ACI Structural Journal
- Volume: 97
- Issue Number: 1
- Publisher: American Concrete Institute (ACI)
- ISSN: 0889-3241
- Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP
Subject/Index Terms
- TRT Terms: Axial loads; Columns; Compressive strength; Concrete; Curvature; Deformation curve; Eccentricity; Engineering moments; Failure; High strength concrete; Loads; Longitudinal reinforcement; Reinforced concrete; Reinforcing steel; Strain (Mechanics); Structural analysis; Tests; Tied concrete; Ultimate strength
- Identifier Terms: American Concrete Institute
- Uncontrolled Terms: Slenderness ratio
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00789053
- Record Type: Publication
- Contract Numbers: CMS-9640570, CMS-9540657, CMS-9401211
- Files: TRIS
- Created Date: Mar 29 2000 12:00AM