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Analytical Study for dispersed Phase Velocity Information of Love Waves  

이일화 (한국철도기술연구원 궤도토목연구본부)
Publication Information
Journal of the Korean Society for Railway / v.7, no.4, 2004 , pp. 391-399 More about this Journal
Abstract
This paper investigated the dispersion characteristics of horizontal surface waves as means to apply conversional SASW techniques. To verify this proposal, 3D finite element analysis and Transfer matrix solution were performed. SH wave(Love waves) has the some advantages in comparison with Rayleigh wave. Representatively, Love wave has a characteristics not affected by compression wave. These characteristics have the robust applicability for the surface wave investigation techniques. In this study, for the purpose of employing Love wave in the SASW method, the dispersion characteristics of the Love wave was extensively investigated by the theoretical and numerical approaches. The 3-D finite element and transfer matrix analyses for the half space and two-layer systems were performed to determine the phase velocities from Love wave as well as from both the vertical and the horizontal components of Rayleigh wave. Preliminary, numerical simulations and theoretical solutions indicated that the dispersion characteristics of horizontal surface wave(Love waves) can be sufficiently sensitive and appliable to SASW techniques.
Keywords
Love wave; Raylegh wave; Roadbed stiffness; Dispersion; SASW(Spectral Analysis of Surface wave);
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  • Reference
1 ABAQUS User Manual Ver. 5.7, Finite element software package, Hibbitt Karlsson & Sorenson, Inc
2 Dziewonski, A. M., and Hales, A. L. (1972), 'Numerical Analysis of Dispersed Seismic Waves,' Geosciences Division, University of Texas at Dallas, pp.
3 Tzong, T. J. and Penzien, J. (1983), 'Hybrid modelling of soil-structure interaction in layered media', Rep. No. UCB/EERC-83/22, Earthquake Engineering Research Center, Univ. of California, Berkey, Calif
4 Sung-Ho Joh(1996), 'Advances in the data interpretation technique for spectral-analysis-of-surface-waves(SASW) measurements', Ph.D Dissertation, Univ. of Texas at Austin
5 Bojan, B. Guzina(2000), 'Dynamic soil sensing via horizontallypolarized shear waves', Proceeeding of sessions of Geo-Denver 2000, ASCE Geotechnical special publication No. 108, 95-108
6 Kramer, S. L.(1996), 'Geotechnical earthquake engineering', Prentice-Hall, Upper Saddle River, NJ
7 조성호, 강태호 (2000), '지반의 전단파속도 토모그래피 영상을 구하기 위한 Multi-Channel Tomographic SASW (MTSASW)기법', 대한토목학회 가을학술발표회논문집, pp.387-390