INELASTIC BEHAVIOR OF FULL-SCALE BRIDGE COLUMNS SUBJECTED TO CYCLIC LOADING
Circular, spirally reinforced concrete bridge columns were subjected to cyclic loading (representing seismic loads) in the laboratory. The test articles were prototype columns designed in accordance with 1983 California Department of Transportation specifications. Two full-scale columns, each measuring 5 ft (1.52 m) in diameter with aspect ratios (height/width) of 3 and 6, were subjected to slow reversed cyclic lateral load with constant axial load to simulate the gravity weight of the bridge superstructure. Details are presented concerning the design of the special test apparatus required to conduct the tests as well as recommendations for future improvements in test procedures. Results from the tests are presented in the form of energy absorption graphs and bar charts, load-displacement hysteresis curves, longitudinal and confining steel strains, and curvature profiles. Comparisons of the ultimate moment capacities, measured displacement ductilities, plastic hinge lengths, cyclic energy absorption capacity and the failure modes of the full-scale specimens are made with those observed from 1/6-scale model tests.
-
Corporate Authors:
National Institute of Standards and Technology
Center for Building Technology
Gaithersburg, MD United States 20899 -
Authors:
- Stone, W C
- Cheok, G S
- Publication Date: 1989-1
Media Info
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 266 p.
Subject/Index Terms
- TRT Terms: Bridges; Columns; Energy absorption; Inelastic stress; Laboratory tests; Prototypes; Reinforced concrete; Repeated loads; Testing equipment
- Uncontrolled Terms: Inelastic action
- Old TRIS Terms: Load displacement; Test results
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00485440
- Record Type: Publication
- Report/Paper Numbers: NIST BSS 166
- Files: TRIS
- Created Date: Jul 31 1989 12:00AM