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http://dx.doi.org/10.5000/EESK.2019.23.3.191

Evaluation of Average Shear-wave Velocity Estimation Methods of Multi-layered Strata Considering Site Period  

Kim, Dong-Kwan (Department of Architectural Engineering, Cheongju University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.23, no.3, 2019 , pp. 191-199 More about this Journal
Abstract
To calculate proper seismic design load and seismic design category, the exact site class for construction site is required. At present, the average shear-wave velocity for multi-layer soil deposits is calculated by the sum of shear-wave velocities without considering of vertical relationship of the strata. In this study, the transfer function for the multi-layered soil deposits was reviewed on the basis of the wave propagation theory. Also, the transfer function was accurately verified by the finite element model and the eigenvalue analysis. Three methods for site period estimation were evaluated. The sum of shear-wave velocities underestimated the average shear-wave velocities of 526 strata with large deviations. The equation of Mexican code overestimated the average shear-wave velocities. The equation of Japanese code well estimated the average shear-wave velocities with small deviation.
Keywords
Seismic design; Site period; Shear-wave velocity; Site amplification;
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