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Geotechnical Disaster Prevention Engineering Lab
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The lab uses analysis and model experiments to determine how ground fails in earthquakes.
AboutAbout the lab
Understanding ground disasters in urban areas.
The Geotechnical Disaster Prevention Engineering Lab clarifies the mechanisms of ground disasters that occur in urban areas and studies how to improve disaster resilience.
In cities that extend from low-lying land to the surrounding hills, the risk of liquefaction during earthquakes, failure of ground in residential land developments, and slope failure is increasing.
The lab works to improve the diagnosis of vulnerability and the assessment of risk for these disasters, and to develop techniques that improve the performance of ground and foundation structures.
The lab approaches these problems from every angle, including nonlinear dynamic analysis based on effective stress analysis and model experiments using a geotechnical centrifuge.
Key terms
- Liquefaction
- A phenomenon in which water-saturated sandy ground loses its strength during earthquake shaking and behaves like a liquid
- Effective stress analysis
- A numerical analysis that separately tracks the force by which soil particles support one another and the pressure of the water in the pores between them
- Geotechnical centrifuge
- A device that spins a scaled-down model at high speed to subject it to high gravity, so that even a small model reproduces the way forces act on the full-scale structure
NewsLab news
Associate Professor Kyohei Ueda received the Editorial Board Member Award from the journal Soils and Foundations
Announcement of lab visit days for incoming fourth-year undergraduates
A book on liquefaction and lateral spreading, edited by Associate Professor Kyohei Ueda and colleagues, has been published
ResearchResearch themes
In urban areas that extend from low-lying waterfront land to hills, the risk of ground disasters such as liquefaction during earthquakes and failure of developed ground and slopes is increasing. The lab improves the diagnosis of vulnerability and the assessment of risk, and develops techniques that improve the performance of ground and foundation structures.
*Illustrative imageHow ground and structures fail in major earthquakes
The lab has developed a numerical analysis program that incorporates a mechanical model of sand into the finite element method, and uses it to analyze damage to infrastructure facilities and to predict the extent of that damage.
*Illustrative imageBuilding constitutive models of soil
The lab has proposed a constitutive model based on the multiple shear mechanism, which interprets soil as an assembly of many particles, and continues to improve it so that it can take into account even the initial anisotropy of soil structure.
*Illustrative imageAnalyzing ground that deforms greatly
The lab extended a mechanical model of sand based on finite deformation theory, which rigorously handles geometric nonlinearity, and developed a large-deformation analysis program for ground-structure systems.
*Illustrative imageBehavior of pile group foundations in centrifuge experiments
Pile foundations of road bridges and port structures built on coastal reclaimed land suffered heavy damage in major earthquakes. Using the geotechnical centrifuge of the Disaster Prevention Research Institute in model experiments, the lab observes the interaction among piles and soil, including between neighboring piles.
MembersFaculty
The Geotechnical Disaster Prevention Engineering Lab consists of faculty, secretaries, international collaborating researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorRyosuke Uzuoka
- Associate ProfessorKyohei Ueda
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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: “Some effects of soil liquefaction after the 2024 Noto earthquake at zenku,nishi-ku,Niigata-city 3” Cp9asngf / CC BY 4.0 (cropped)
- How ground and structures fail in major earthquakes: “R6 noto earthquake wajima seaside” Hurohukidaikon / CC BY 4.0 (cropped)
- Building constitutive models of soil: “Triaxial test sample” Builderpb / CC BY-SA 4.0 (cropped)
- Analyzing ground that deforms greatly: “Landslide triggered by M6.4 earthquake in Puerto Rico” Steven Sobieszczyk, USGS. Public domain. / CC BY-SA 4.0 (cropped)
- Behavior of pile group foundations in centrifuge experiments: “NEES Geotechnical Centrifuge Facility ( )” UC Davis College of Engineering / CC BY 2.0 (cropped)
- Related lab (Regional Water Environment Systems Lab): “Inca canal at Pampacahuana” Sashimi-b / CC BY-SA 4.0 (cropped)
- Related lab (Crustal Development Engineering Lab): “Hohlbohrkern” --Nightflyer 23:51, 27. Jun 2006 (CEST) / CC BY-SA 3.0 (cropped)
- Related lab (Earth Resource Systems Lab): “Mutnovsky geothermal power plant” -= Nikita Zhuravlev = / CC BY-SA 4.0 (cropped)
- Related lab (Waterfront Ground Science Lab): “Breaking waves - Sicily” Wind&Wuthering / CC BY 2.0 (cropped)
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