Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Lowland Technology International
T. Ishizawa
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Engineering Transportation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Geotechnical damage due to the 2016 Kumamoto Earthquake and future challenges H. Hazarika; T. Kokusho; R.E. Kayen; S. Dashti; H. Fukuoka; T. Ishizawa; Y. Kochi; D. Matsumoto; H. Furuichi; T. Hirose; T. Fujishiro; K. Okamoto; M. Tajiri; M. Fukuda
Lowland Technology International Vol 19 No 3, Dec (2017)
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The 2016 Kumamoto earthquake with a moment magnitude of 7.0 (Japanese intensity = 7) that struck on April 16 brought devastation in many areas of Kumamoto Prefecture and partly in Oita Prefecture in Kyushu Region, Japan. The earthquake preceded a foreshock of magnitude 6.5 (Japanese intensity = 7) on April 14. This paper summarizes the damage brought to geotechnical structures by the two consecutive earthquakes within a span of twenty-eight hours. The paper highlighted some of the observed damage and identifies reasons for such damage. The geotechnical challenges towards mitigation of losses from such earthquakes are also suggested.
Evaluation of seismically induced slope displacement by energy approach and applicability to a Case Study related to the 2016 Kumamoto Earthquake T. Ishizawa; T. Kokusho
Lowland Technology International Vol 19 No 4, March (2018)
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The energy approach for slope failure evaluation has been developed by examining the energy balance in the rigid block model, comparing it to innovative shake table tests of sand model slope. As a result, previous studies have shown evaluation method is proposed in which residual slope displacement can be given from the earthquake energy. Moreover, a framework of performance-based design for slopes during earthquakes has been proposed. However, this energy method needs to have more research to upgrade the energy method to a reliable design tool. Therefore, the energy-based method was applied to a case history during the 2016 Kumamoto earthquake. The input earthquake energy defined as a base layer of the slope was extrapolated from severalstrong motion records. This paper discusses applicability of the energy-based method to a case history, during the 2016 Kumamoto earthquake, of the sliding-mass was travelled gentle slope along the clear slip plane, as a simplified rigid block model.
Co-Authors D. Matsumoto H. Fukuoka H. Furuichi H. Hazarika K. Okamoto M. Fukuda M. Tajiri R.E. Kayen S. Dashti T. Fujishiro T. Hirose T. Kokusho Y. Kochi