Browse > Article
http://dx.doi.org/10.11112/jksmi.2013.17.5.049

Seismic Performance and Flexural Over-strength of Circular RC Column  

Ko, Seong-Hyun (제주국제대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.17, no.5, 2013 , pp. 49-58 More about this Journal
Abstract
Eight small scale circular reinforced concrete columns were tested under cyclic lateral load with constant axial load. Test specimens were designed with 4.5 aspect ratio. The selected test variables are longitudinal steel ratio, transverse steel ratio, yielding strength of longitudinal steel and axial load ratio. The test results of columns with different longitudinal steel ratio, transverse steel ratio and axial load ratio showed different seismic performance such as equivalent damping ratio, residual displacement and effective stiffness. It was found that the column with low strength of longitudinal steel showed significantly reduced seismic performance, especially for equivalent damping ratio and residual displacement. The regulation of flexural over-strength is adopted by Korea Bridge Design Specifications (Limited state design, 2012). The test results are compared with nominal strength, result of nonlinear moment-curvature analysis and the design specifications such as AASHTO LRFD and Korea Bridge Design Specifications (Limited state design).
Keywords
Transverse steel ratio; Longitudinal steel ratio; Equivalent damping; Seismic performance; Flexural over-strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 ATC-32, Improved Seismic Design Criteria for California Bridges, Provisional Recommendations, Applied Technology Council, Redwood City, California, 1996.
2 CALTRANS, Caltrans Seismic Design Criteria, Version 1.3, California Department of Transportation, Sacramento, USA, December, 2002.
3 ATC/MCEER, Recommended LRFD Guidelines for the Seismic Design of Highway Bridges, Part I : Specifications, Part II : Commentary and Appendices, 2001.
4 Mander, J. B., Priestley, M. J. N. and Park, R., "Theoretical Stress-Strain Model for Confined Concrete", Journal of Structural Engineering, ASCE, Vol. 114, No. 8, August 1988, pp.1804-1826.   DOI   ScienceOn
5 CEN, Design Provisions for Earthquake Resistance of Structures - Bridges, Eurocode 8 Part 2, European Committee for Standardization, 1996.
6 Ko, S. H., "Displacement Ductility of Circular RC Column according to the Spacing of Spirals", Journal of Korea Institute for Structural Maintenance Inspection, KSMI, Vol. 17, No. 2, 2012, pp.71-82 (in Korean).   과학기술학회마을   DOI   ScienceOn
7 Ko, S. H., "Seismic Performance of Square RC Column Confined with Spirals", Journal of Korea Institute for Structural Maintenance Inspection, KSMI, Vol. 16, No. 5, 2012, pp.88-97 (in Korean).   과학기술학회마을   DOI   ScienceOn
8 Ministry of Construction & Transportation, Korea Bridge Design Specifications (Limited state design), Korea, 2012 (in Korean).
9 Transit New Zealand, Bridge Manual, plus amendment No. 1, Wellington, New Zealand, 1994.
10 AASHTO, LRFD Bridge Design Specifications, American Association of State Highway and Transportation Officials, SI Unit, 3rd ed., Washington, DC, USA, 2005.
11 AASHTO, Standard Specifications for Highway Bridges, American Association of State Highway and Transportation Officials, 17th ed., Washington, DC, USA, 2002.