DOI QR코드

DOI QR Code

Effect of Reinforcing Bar on Rayleigh Wave Propagation on Concrete Structures

  • Kim, Jae-Hong (Ulsan National Institute of Science and Technology (School of Urban and Environmental Engineering, UNIST)) ;
  • Lee, Kang-Wook (Hyundai Engineering & Construction Co., Ltd.)
  • 투고 : 2015.06.22
  • 심사 : 2015.06.26
  • 발행 : 2015.06.30

초록

This paper presents results on a study of the Rayleigh wave scattering in concrete with a steel bar using transient elastic waves. To study the characteristics of the scattered waves induced by a steel bar in concrete, a three-dimensional finite element method was adopted. A case for elastic wave propagation parallel to the steel bar is discussed. The effect of the cover thickness and steel bar diameter on the Rayleigh wave was studied. To confirm the numerical investigations, a concrete specimen containing a steel bar was made, and corresponding transient elastic wave experiments were conducted. It is believed that the result of this study can serve as an important reference in a nondestructive evaluation of concrete with a steel bar.

키워드

참고문헌

  1. ABAQUS, Inc. (2004). ABAQUS 6.5 Analysis User's Manual.
  2. ACI Committee 228 (2003). In-Place Methods to Estimate Concrete Strength, ACI 228.1R-03, American Concrete Institute.
  3. Ihlenburg, F. (1998). Finite element analysis of acoustic scattering, Springer-Verlag New York Inc.
  4. Kim, J.H., Kwak, H.G. (2008). Nonsestructive evaluation of elastic properties of concrete using simulation of surface waves, Computer-Aided Civil and Infrastructure Engineering, 23, 611-624. https://doi.org/10.1111/j.1467-8667.2008.00562.x
  5. Moser, F., Jacobs, L.J., Qu, J. (1999). Modeling elastic wave propagation in waveguides with the finite element methods, NDT & E International, 32, 225-234. https://doi.org/10.1016/S0963-8695(98)00045-0
  6. Wu, T.-T., Fang, J.-S., Liu, G.-Y., Kuo, M.-K. (1995). Determination of elastic constants of a concrete specimen using transient elastic waves, Journal of the Acoustical Society of America, 98(4), 2142-2148. https://doi.org/10.1121/1.413328
  7. Wu, T.-T., Sun, J.-H., Tong, J.-H. (2000). On the study of elastic wave scattering and Rayleigh wave velocity measurement of concrete with steel bar, NDT & E International, 33, 401-407. https://doi.org/10.1016/S0963-8695(00)00012-8
  8. Zerwer, A., Cascante, G. & Hutchinson, J. (2002), Parameter estimation in finite element simulations of Rayleigh waves, Journal of Geotechnical and Geoenvironmental Engineering, 128(3), 250-261. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:3(250)