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http://dx.doi.org/10.7843/kgs.2022.38.10.41

Determination of Density of Saturated Sand Considering Particle-fluid Interaction During Earthquake  

Kim, Hyun-Uk (KHNP CRI)
Lee, Sei-Hyun (Korea Institute of Nuclear Safety)
Youn, Jun-Ung (Korea Authority of Land & Infrastructure Safety)
Publication Information
Journal of the Korean Geotechnical Society / v.38, no.10, 2022 , pp. 41-48 More about this Journal
Abstract
The mass density of the medium (ρ) used to calculate the maximum shear modulus (Gmax) of the saturated ground based on the shear wave velocity is unclear. Therefore, to determine the mass density, a verification formula and five scenarios were established. Laboratory tests were conducted, and the obtained results were compared. The mass density of the medium was assumed to be saturated (ρsat), wet (ρt), dry (ρdry), and submerged conditions (ρsub), and the Vs ratios of saturated to dry condition were obtained from each case. Assuming the saturated density (ρsat), the Vs ratio was consistent with the value from the resonant column test (RCT) results, and the value from the bender element test results was consistent with the wet density assumption (ρt). Considering the frequency range of earthquakes, it is concluded that applying the saturated density (ρsat) is reasonable as in the RCT results.
Keywords
Mass density; Maximum shear modulus; Particle-fluid interaction; Saturated sand; Site response analysis;
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