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http://dx.doi.org/10.7843/kgs.2009.25.4.5

A Study on Application of HWAW Method to the Non-horizontally Layered Soil Structure  

Bang, Eun-Seok (Geotechnical Engrg. Division, KIGAM)
Park, Heon-Joon (Dept. of Civil and Environmental Engrg., KAIST)
Park, Hyung-Choon (Dept. of Civil and Engrg., Chungnam Univ.)
Kim, Dong-Soo (Dept. of Civil and Environmental Engrg., KAIST)
Publication Information
Journal of the Korean Geotechnical Society / v.25, no.4, 2009 , pp. 5-17 More about this Journal
Abstract
In HWAW method, experimental dispersion curve is obtained through time-frequency analysis, and inversion procedure is based on the forward modeling which considers full wavefield. Therefore, it enables us to use relatively short testing setup and has advantage for two dimensional subsurface imaging compared with another surface wave methods. Numerical study was performed to verify that the HWAW method can be applied to non-horizontally layerd soil structure. The experimental dispersion curves obtained from HWAW method agreed with the theoretical dispersion curves based on full wavefield. Experimental dispersion curves are mainly more affected by the region between two receivers than by the region from source to the first receiver. Fluctuation phenomena of dispersion curve can be reduced by adequate receiver spacing setup. From numerical study, it was thought that reliable Vs distribution map can be constructed by HWAW method and finally subsurface imaging was tried in the real field.
Keywords
HWAW; Numerical simulation; Shear wave velocity; Surface wave methods;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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