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Sekiguchi Lab
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A lab that works toward safe, comfortable cities by studying the ground beneath them and the foundations of buildings.
AboutAbout the lab
Safe, comfortable cities, starting from the ground beneath them.
Sekiguchi Lab conducts research mainly on soils and building foundations to realize "safe, comfortable, and sustainable cities."
The lab evaluates over wide areas how the ground shakes during earthquakes, predicts liquefaction damage, and considers countermeasures.
It also studies environmental vibration transmitted through the ground by passing vehicles.
The research combines field experiments, model experiments, and numerical analysis.
Key terms
- Liquefaction
- A phenomenon in which water-saturated sandy ground turns slurry-like during earthquake shaking and loses its capacity to support buildings
- Ground motion amplification
- The increase in the strength of earthquake shaking as it passes through soft surface soil
- Environmental vibration
- Vibration transmitted through the ground by passing vehicles or trains, felt by buildings and people
NewsLab news
View More ↗ResearchResearch themes
To realize "safe, comfortable, and sustainable cities," the lab focuses mainly on the ground and building foundations. With earthquake disaster prevention and environmental vibration as its two pillars, it conducts research through field experiments, model experiments, and numerical analysis.
*Illustrative imageEvaluating Amplification of Earthquake Ground Motion in Surface Soil
To estimate ground motion at each location for earthquake damage assessments, it is necessary to know how much shaking is amplified in the surface soil layers. The lab collects and analyzes data over wide areas, such as topography and boring logs, and develops more advanced simulation methods.
*Illustrative imagePredicting and Mitigating Liquefaction
The lab investigates the distribution of liquefaction damage in Mihama Ward, Chiba City, during the Great East Japan Earthquake, identifies its causes, and aims to improve liquefaction predictions nationwide. For reclaimed land and other hazardous areas, it examines economical and effective countermeasures through model experiments and field demonstration tests.
*Illustrative imageHow Traffic-Induced Vibration Propagates
Through field experiments and numerical analysis, the lab evaluates environmental vibration caused by vehicles, taking into account the interaction between the ground and building foundations.
MembersFaculty
Sekiguchi Lab consists of faculty members and doctoral, master's, and undergraduate students.As of 2026
- Associate ProfessorToru Sekiguchi
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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: “2013-igcs-vieux-viel-colluviosols-luvisols (2)” CWALTER / CC BY-SA 4.0 (cropped)
- Evaluating Amplification of Earthquake Ground Motion in Surface Soil: “Amouri Seismograph for recording earthquakes (Weather Bureau) LCCN” National Photo Company Collection / Public domain (cropped)
- Predicting and Mitigating Liquefaction: “Ground improvement by Haneda Airport Access Line construction on Tōkaidō Shinkansen” 電車(新幹線)で
ゴー！ / CC0 (cropped) - How Traffic-Induced Vibration Propagates: “Road Noise and Vibration - geograph.org.uk - 7800438” Des Blenkinsopp / CC BY-SA 2.0 (cropped)
- Related lab (構造安全計画
（中村 友紀子） ): “UCSD-JacobsSchool-20230406-Shake table-Tallwood-sunset-05308-DNG dxo-8MP” Jacobs School of Engineering / CC BY 2.0 (cropped) - Related lab (丸山喜久研究室): “Shin-Tomei Expressway 20120909” Batholith / Public domain (cropped)
- Related lab (地震災害工学研究室): “February 2011 Christchurch earthquake 15” Andy Miah / CC BY-SA 2.0 (cropped)
- Related lab (Structural Engineering and Materials Lab.
（蔡研究室） ): “A bunch of rebar” W.carter / CC BY-SA 4.0 (cropped)
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