DOI QR코드

DOI QR Code

Concrete Shear Strength of HIRC Beams Reinforced with a SMA

  • Lee, Seung Jo (Department of Architecture, Chosun College of Science & Technology) ;
  • Park, Jung Min (Department of Architecture, Kyungbuk College)
  • Received : 2018.03.28
  • Accepted : 2018.09.07
  • Published : 2018.09.30

Abstract

The aim of the study is to evaluate the concrete shear strength and structural behavior of two general beams and eight shape memory alloys (SMAs)-reinforced beams under the flexural test. This work compares the existing reference formula for concrete shear strength with test result to provide the basic data for the design of highly intelligent reinforced concrete (hereinafter, HIRC) beams. The evaluation of the concrete shear strength was performed with effective depth (d=65, 70, 80), SMA diameter change (ø=2.0, 2.5) as the main variables of the specimens. For the relationship between the effective depth and the $V_{\exp}/V_{cal}$, the test result shows that the concrete shear strength gradually approaches 1.0 as the effective depth length increase. For the AIJ formula, the specimens are approached evenly for comparison between $V_{\exp}/V_{cal}$ and the by-product (garnet, fly-ash) reinforced specimen; however, other formulas indicate a deviation.

Keywords

References

  1. AIJ (1988) "AIJ Standard for Structural Calculation of Reinforced Concrete Structures." Architectural Institute of Japan.
  2. Arup, K. M. (1998) "Smart Prestressing with Shape-Memory Alloy." ASCE-Journal of Engineering Mechanics, 10: 1121-1128.
  3. CEB (1990) "Structural Concrete", Volume 2 (Basis of Design), CEB-FIP Model Code.
  4. Choi, E. S. (2011) "Monotonic and Cyclic Bond Behavior of Confined Concrete Using NiTib SMAwires." Smart Material Structure, 20: 075016. https://doi.org/10.1088/0964-1726/20/7/075016
  5. JSCE (1991) "Standard Specification for Design and Construction of Concrete Structures." Japan Society of Civil Engineers, Part I (Design), Tokyo.
  6. KBC (2016) "KBC Structural Design Guidelines for Reinforced Concrete Buildings." Korea Building Code.
  7. Lee, S. J. (2017) "An Experimental Study on the Structural Behavior of HIRC Beams Using Nickel-Titanium SMA Wires." Key Engineering Materials, 730: 423-428. https://doi.org/10.4028/www.scientific.net/KEM.730.423
  8. Otero, K. (2004) "Intelligent Reinforced Concrete Structures using Shape Memory Alloys." M.S.thesis. Advisor: Dr. G. Song, University of Houston.
  9. Park, R. & Paulay, T. (1975) "Reinforced concrete structures." John Wiley & Sons, New York.
  10. Parviz, S. (2001) "Repair and Strengthening of Concrete Structures through Application of Corrective Posttensioning Forces with Shape Memory Alloys." Transport Res Rec 1770: Paper no. 01-0400.
  11. Song, G. (2006) "Applications of Shape Memory Alloys in Civil Structures." Engineering Structures, 28: 1266-1274. https://doi.org/10.1016/j.engstruct.2005.12.010
  12. Spadea, G. (1998) "Structural Behavior of Composite RC Beams with Externally Bonded CFRP." Journal of Composites for Construction, ASCE, 2(3): 132-137. https://doi.org/10.1061/(ASCE)1090-0268(1998)2:3(132)
  13. Toshinori, T. (1990) "Concept of intelligent materials." Intelligent Materials Systems and Structures, 1149-1156.