TY - GEN
T1 - Seismic shear behavior of clayey volcanic soil in residential area damaged by the 2016 kumamoto earthquakes in japan
AU - Izumiya, S.
AU - Kamura, A.
AU - Kazama, M.
AU - Kim, J.
AU - Sato, S.
N1 - Funding Information:
In this research, Kabuki technical staff tested the physical properties. In addition, we used the earthquake records of the KiK-net observation station. We are grateful for the assistance. This study was supported by JSPS KAKENHI Grant Number 16H02362.
Publisher Copyright:
© 2019 Associazione Geotecnica Italiana, Rome, Italy.
PY - 2019
Y1 - 2019
N2 - Sandy volcanic soils, including pumice, are vulnerable to earthquakes. On the contrary, clayey soil does not liquefy and is stronger than sandy soil. However, during the 2016 Kumamoto earthquake, a large ground deformation occurred in the residential area of Mashiki Town wherein clayey volcanic soil was deposited. We studied the seismic shear behavior of this clayey volcanic soil using a torsional cyclic shear test with a random shear stress history corresponding to actual seismic records. In our test, we also studied the effects of a series of seismic motion histories and the initial shear stress because most damage occurred on the slope area. As a result, in the case with initial shear stress owing to the slope, a larger residual strain developed compared to the case without an initial shear stress.
AB - Sandy volcanic soils, including pumice, are vulnerable to earthquakes. On the contrary, clayey soil does not liquefy and is stronger than sandy soil. However, during the 2016 Kumamoto earthquake, a large ground deformation occurred in the residential area of Mashiki Town wherein clayey volcanic soil was deposited. We studied the seismic shear behavior of this clayey volcanic soil using a torsional cyclic shear test with a random shear stress history corresponding to actual seismic records. In our test, we also studied the effects of a series of seismic motion histories and the initial shear stress because most damage occurred on the slope area. As a result, in the case with initial shear stress owing to the slope, a larger residual strain developed compared to the case without an initial shear stress.
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M3 - Conference contribution
AN - SCOPUS:85081170522
SN - 9780367143282
T3 - Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019
SP - 3094
EP - 3101
BT - Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- Proceedings of the 7th International Conference on Earthquake Geotechnical Engineering, 2019
A2 - Silvestri, Francesco
A2 - Moraci, Nicola
PB - CRC Press/Balkema
T2 - 7th International Conference on Earthquake Geotechnical Engineering, ICEGE 2019
Y2 - 17 January 2019 through 20 January 2019
ER -