Browse > Article
http://dx.doi.org/10.11112/jksmi.2014.18.6.041

An Experimental Study on Splitting Bond Strength of RC Column Reinforced with External Steel-Band  

Kim, Chang-Sik (한국교통대학교 건축공학과)
Yoon, Seung-Joe (한국교통대학교 건축공학과)
Ho, Seung-Woong (한국교통대학교 친환경구조.재료연구실)
Yoon, Pil-Joong ((주)KCC 건설 건축사업부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.18, no.6, 2014 , pp. 41-49 More about this Journal
Abstract
In order to investigation splitting bond strength of the deformed longitudinal reinforcing bars in the R C members strengthened laterally with the external steel-band, a total 9 sets of test re-bars with and without active confining force given by the external steel-band are pulled monotonically until failure. Test results indicate that the bond strength becomes higher with the increase in number of steel-band sets and their initial stress magnitude. This is due to the active confining force given by the steel-band, and passive confining forces given by the steel-band and transverse reinforcements, in which the passive confinement effect varies depending on the magnitude of active confining force. An equation to estimate the splitting bond strengths for the R C members strengthened laterally with the external steel-band is developed based on the several experimental results of the present study.
Keywords
Splitting bond strength; Reinforced by external; Steel-band;
Citations & Related Records
연도 인용수 순위
  • Reference
1 ACI Committee 317 (2002), Building code requirements for structural concrete (ACI318-02) and commentary (318R-02), American Concrete Institute, Farmington Hills, MI, 443.
2 Fujii, S., Morita, S. (1983), SPLITTING BOND CAPACITIES OF DEFORMED BARS, Part 2 A proposed ultimate strength equation for splitting bond failure, Transactions of the Architectural Institute of Japan, 324, 45-53.   DOI
3 Hussain, M. A., and Driver, R. G. (2005), Experimental Investigation of External Confinement of Reinforced Concrete Columns by Hollow Structural Section Collars, ACI Structural Journal, 102(2), 242-251.
4 Joo, J. W., Yang, K. H., Lee, Y. H., Chung, H. S. (1999), An Experimental Study on the Strength and the Ductility of Concentric Loaded High-Strength R.C Columns, Journal of Architectural Institute of Korea, 19(1), 289-294.
5 MATSUNO, K., Kono, S., KAKU, T. (2001), BOND SPLITTING STRENGTH OF RC MEMBERS CONFINED WITH FRP SHEETS, Part 1 Proposal of bond strength equation, Architectural Institute of Japan, Journal of structural and construction engineering, 548, 95-100.
6 Yamakawa, T., Kamogawa, S., Kurashige, M. (1999), An experimental study on the seismic retrofit technique for RC columns confined with PC bar prestressing as external hoops, Journal of Structural and Construction Engineering, Architectural Institute of Japan, 526, 141-145.