Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shear Wave Velocity Estimation in Korea Using P-Wave Seismograms
https://orcid.org/http://orcid.org/0000-0002-3290-7163
https://orcid.org/http://orcid.org/0000-0003-1401-8028
The average shear wave velocity for a soil depth of 30 m (VS30) is crucial for seismic hazard assessments. However, VS30 measurements are not available at most recording stations in Korea. The P-wave seismogram method is an efficient way to estimate VS30 because it only utilizes P-wave seismograms recorded on the ground surface without boring process. VS30 measurements for 51 recording stations are acquired from previous literature, and downhole tests were performed at 10 stations for additional VS30 measurements. The P-wave seismogram method is validated for 50 stations using 359 seismograms recorded during 66 earthquake events with local magnitudes greater than 3.0. The average shear wave velocity for a certain depth (VSZ) can be estimated using the ratio of radial to vertical components in the initial P-wave velocity seismograms, which can be converted to VS30 using an empirical relationship. The residuals between the measured and estimated VS30 are divided into the overall bias, between-site residuals, and within-site residuals. The standard deviation for between-site residuals is 0.37, which is comparable with the values of previous studies for other countries. After bias correction, 70% of measured VS30 and estimated VS30 are within ±50% of each other. This study estimates VS30 values for 118 stations where VS30 is not available.
Shear Wave Velocity Estimation in Korea Using P-Wave Seismograms
https://orcid.org/http://orcid.org/0000-0002-3290-7163
https://orcid.org/http://orcid.org/0000-0003-1401-8028
The average shear wave velocity for a soil depth of 30 m (VS30) is crucial for seismic hazard assessments. However, VS30 measurements are not available at most recording stations in Korea. The P-wave seismogram method is an efficient way to estimate VS30 because it only utilizes P-wave seismograms recorded on the ground surface without boring process. VS30 measurements for 51 recording stations are acquired from previous literature, and downhole tests were performed at 10 stations for additional VS30 measurements. The P-wave seismogram method is validated for 50 stations using 359 seismograms recorded during 66 earthquake events with local magnitudes greater than 3.0. The average shear wave velocity for a certain depth (VSZ) can be estimated using the ratio of radial to vertical components in the initial P-wave velocity seismograms, which can be converted to VS30 using an empirical relationship. The residuals between the measured and estimated VS30 are divided into the overall bias, between-site residuals, and within-site residuals. The standard deviation for between-site residuals is 0.37, which is comparable with the values of previous studies for other countries. After bias correction, 70% of measured VS30 and estimated VS30 are within ±50% of each other. This study estimates VS30 values for 118 stations where VS30 is not available.
Shear Wave Velocity Estimation in Korea Using P-Wave Seismograms
https://orcid.org/http://orcid.org/0000-0002-3290-7163
https://orcid.org/http://orcid.org/0000-0003-1401-8028
The average shear wave velocity for a soil depth of 30 m (VS30) is crucial for seismic hazard assessments. However, VS30 measurements are not available at most recording stations in Korea. The P-wave seismogram method is an efficient way to estimate VS30 because it only utilizes P-wave seismograms recorded on the ground surface without boring process. VS30 measurements for 51 recording stations are acquired from previous literature, and downhole tests were performed at 10 stations for additional VS30 measurements. The P-wave seismogram method is validated for 50 stations using 359 seismograms recorded during 66 earthquake events with local magnitudes greater than 3.0. The average shear wave velocity for a certain depth (VSZ) can be estimated using the ratio of radial to vertical components in the initial P-wave velocity seismograms, which can be converted to VS30 using an empirical relationship. The residuals between the measured and estimated VS30 are divided into the overall bias, between-site residuals, and within-site residuals. The standard deviation for between-site residuals is 0.37, which is comparable with the values of previous studies for other countries. After bias correction, 70% of measured VS30 and estimated VS30 are within ±50% of each other. This study estimates VS30 values for 118 stations where VS30 is not available.
Shear Wave Velocity Estimation in Korea Using P-Wave Seismograms
KSCE J Civ Eng
Kim, Jaesung (Autor:in) / Kim, Byungmin (Autor:in) / Cho, Hyungik (Autor:in)
KSCE Journal of Civil Engineering ; 24 ; 3650-3658
01.12.2020
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Shear Strength Estimation of Sandy Soils Using Shear Wave Velocity
| Online Contents | 2007
Shear Strength Estimation of Sandy Soils Using Shear Wave Velocity
| British Library Online Contents | 2007
Estimation of Undrained Shear Strength for Saturated Clay Using Shear Wave Velocity
| Online Contents | 2016