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http://dx.doi.org/10.5000/EESK.2010.14.3.039

Characteristics of the Stress-strain Relationship of Square Sectional Concrete Confined by Hoop Reinforcement with Cross-ties  

Jeong, Hyeok-Chang (울산대학교 건설환경공학부)
Cha, Soo-Won (울산대학교 건설환경공학부)
Kim, Ick-Hyun (울산대학교 건설환경공학부)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.14, no.3, 2010 , pp. 39-48 More about this Journal
Abstract
Improved seismic performances of RC bridges can be attained by sufficient ductilities of piers, which can be obtained by providing sufficient lateral confinements to the plastic hinge regions of piers. The cross sectional shape and the amount of lateral reinforcements are key parameters in the determination of effective confinements. Even though identical amounts of lateral reinforcement are provided, the effective confinement differs due to different spacing, arrangements, hook details and so on. Unlike circular sections in which confinement is exerted by mere hoop reinforcements, cross-ties are arranged in square or rectangular sections to enhance the effective confinements. The stress-strain relationship of confined concrete is varied by how to consider these cross-ties. In this study, the stress-strain relationships of confined concrete with cross-ties are investigated experimentally and their mechanical characteristics are estimated by comparison with other empirical equations.
Keywords
Stress-strain relationship; Confined concrete; Lateral confinement; Csross-ties;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Hoshikuma, J., Kawashima, K., Nagaya, K.W. “Stress-strain for reinforced concrete it bridge piers,” J. Struct. Eng., ASCE, May, 624-633, 1997.
2 정혁창, 김익현, “횡방향철근에 의해 횡구속된 콘크리트의 응력-변형률 특성,” 한국지진공학회 논문집, 제13권 제3호, 67-80, 2009.   과학기술학회마을   DOI   ScienceOn
3 日本道路協會, 道路橋示方書․同解說, V 耐震設計編, 平成 14年.
4 Kent, D.C., and Park, R. “Flexural members with confined concrete,” J. Struct. Div., ASCE, Vol.97, No.7, 1969-1988, 1971.
5 Park, R.,Priestley, M.J.N., and Gill, W.D. “Ductility of square-confined concrete columns,” J. Struct. Div., ASCE, Vol.108, No.4, 929-950, 1982.
6 Sheikh, S.A., and Uzumeri, S.M. “Strength and Ductility of tied concrete columns,” J. Struct. Div., ASCE, Vol.106, No.5, 1079-1102, 1980.
7 Sheikh, S.A., and Uzumeri, S.M. “Analytical model for concrete confinement in tied columns,” J. Struct. Div., ASCE, Vol.108, No.12, 2703-2722, 1982.
8 Mander, J.B, Priestley, M.J.N., and Park, R. “Theoretical stress-strain model fot confined concrete,” J. Struct. Div., ASCE, Vol.114, No.8, 1804-1826, 1988.   DOI   ScienceOn
9 Mander, J.B, Priestley, M.J.N., and Park, R. “Observed stress-strain behavior of confined concrete,” J, Struct. Div., ASCE, Vol.114, No.8, 1827-1849, 1988.   DOI   ScienceOn
10 Saatcioglu, M. and Razvi, S.R. “Strength and ductility of confined concrete,” J. Struct. Div., ASCE, Vol.118, No.6, 1590-1607, 1992.   DOI
11 Priestley, M.J.N., Seible, F., and Calvi, G.M., Seismic Design and Retrofit of Bridges, John Wiley & Sons, Inc.,1996.
12 건설교통부, “도로교 설계기준,” 2003.