- Author
- Cheok, G. S. | Stone, W. C.
- Title
- Behavior of 1/6-Scale Model Bridge Columns Subjected to Cyclic Inelastic Loading.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Sponsor
- National Science Foundation, Washington, DC Federal Highway Administration, Washington, DC California Department of Transportation, Sacramento
- Report
- NBSIR 86-3494, November 1986,
- Distribution
- Available from National Technical Information Service
- Keywords
- columns (support); bridges (structures); cyclic loads; elastic properties; model tests; reinforced concrete; ready mixed concrete; gravel; aspect ratio; axial stress; computer programs; energy absorption; displacement; strains; graphs (charts) | computer graphics
- Identifiers
- microconcrete; computer graphics
- Abstract
- Circular, spirally reinforced concrete bridge columns were subjected to cyclic inelastic loading in the laboratory. The bridge columns were one-sixth scale models of prototype columns designed in accordance with current California Department of Transportation specifications. A total of six models were tested; three were constructed with microconcrete, and three with ready-mix concrete using pea gravel. Variables included the aspect ratio, magnitude of axial load, and the use of microconcrete versus ready-mix. The models were subjected to slow reversed cyclic loading with the axial load held constant. Results from the tests are presented in the form of energy absorption, load-displacement curves, longitudinal steel strains, and displacement profiles. Comparisons of the ultimate moment capacities, measured displacement ductilities, plastic hinge lengths, and the failure mode for the six models are discussed. Comparisons with previous studies are presented. A series of graphics-based computer programs are discussed. Source code is provided.