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Noda-Nakai Lab (Geotechnical Disaster Prevention Engineering Group)
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A lab that predicts, through experiments and computation, what happens to the ground during a huge earthquake.
AboutAbout the lab
What happens to the ground when a huge earthquake strikes?
The Noda-Nakai Lab (Geotechnical Disaster Prevention Engineering Group) studies what happens to the ground and infrastructure during earthquakes.
The lab examines soil properties through tests and calculates how the ground deforms and fails using GEOASIA, a ground analysis technique developed by the geotechnical research group at Nagoya University.
The lab takes part in joint projects with national government bodies and companies in the Chubu region, and is involved in evaluating the seismic performance of infrastructure and studying countermeasures.
It also studies the verification of liquefaction damage and seismic countermeasures for river levees.
Key terms
- liquefaction
- A phenomenon in which sandy ground shaken by an earthquake becomes saturated with water and behaves like a liquid, causing the ground to sink and buried objects to float up
- seismic performance
- The ability to withstand earthquake shaking
- intermediate soil
- Soil that is a mixture of sand, clay, mudstone, and other materials; much of its behavior remains poorly understood
- hazard map
- A map showing where and to what extent damage is likely to occur in a disaster
ResearchResearch themes
Many of Japan's important infrastructure facilities sit on soft ground that is vulnerable to earthquake damage. Combining soil tests with numerical analysis using the ground analysis technique GEOASIA, the lab studies how to predict earthquake damage to the ground and how to counter it.
*Illustrative imageSeismic Assessment of Infrastructure Facilities
Many important facilities such as airports, expressways, and Shinkansen lines stand on ground reclaimed with intermediate soil. The lab takes part in joint projects with national government bodies and companies in the Chubu region, predicting ground damage during earthquakes and contributing to the evaluation of the facilities' seismic performance and the study of countermeasures.
*Illustrative imageVerifying Liquefaction Damage and Hazard Maps
The lab examines why severe liquefaction damage occurred along the Tokyo Bay coast, including Urayasu, in the Great East Japan Earthquake, aiming to produce more reliable liquefaction hazard maps. Investigations that extended down to deep clay layers have shown that the structure of the strata beneath the liquefied layer also strongly affects the damage.
*Illustrative imagePredicting Deformation of River Levees and Seismic Countermeasures
In preparation for a huge Nankai Trough earthquake, the lab models river levees from the results of tests on soil collected by boring and predicts how the ground deforms during an earthquake. It also examines the effects of seismic countermeasures and points requiring attention.
MembersFaculty
The members of the Noda-Nakai Lab are faculty members, secretaries, and students in the doctoral, master's, and undergraduate programs.As of 2024
- ProfessorToshihiro Noda
- Associate ProfessorKentaro Nakai
- Assistant ProfessorTomohiro Toyoda
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Soil-liquefaction at Shinkiba after 2011 Tohoku Pacific Ocean offshore earthquake” Morio / CC BY-SA 3.0 (cropped)
- Seismic Assessment of Infrastructure Facilities: “Interstate bridge collapse, 1994 Northridge Earthquake” Robert A. Eplett / Public domain (cropped)
- Verifying Liquefaction Damage and Hazard Maps: “Mumbai, aerial view, satellite image, India March 2004” NASA / Public domain (cropped)
- Predicting Deformation of River Levees and Seismic Countermeasures: “Tatami Levee-2” PekePON / CC BY-SA 3.0 (cropped)
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