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http://dx.doi.org/10.7843/kgs.2007.23.2.5

Numerical Verification of HWAW Method in the Near Field  

Bang, Eun-Seok (Geotechnical Engineering Division, KIGAM)
Park, Hyung-Choon (Dept. of Civil Engrg., ChungNam Univ.)
Kim, Dong-Soo (Dept. of Civil and Environmental Engrg., KAIST)
Publication Information
Journal of the Korean Geotechnical Society / v.23, no.2, 2007 , pp. 5-17 More about this Journal
Abstract
Various field setup and filtering criteria have been suggested to avoid the near field effects in surface wave methods. Unlike other surface wave methods HWAW method uses the near field component positively. It is possible by using maximum energy point based on time-frequency map and inversion method to consider receiver locations from the source point and body wave component. To verify the HWAW method in the near field numerical study was performed and the wave propagation in the stratified soil media was simulated due to a surface point load. All of five representative soil models were used. The experimental dispersion curves, determined by HWAW method at the various receiver distances in the region of near field, all coincided well with the theoretical dispersion curves determined by 3D forward modeling (Kausel's method). Consequently, it was considered that the HWAW method can provide reliable $V_s$ profiles effectively in the near field.
Keywords
HWAW;
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