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Kusunoki-Maida Lab
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A lab that investigates how reinforced concrete buildings behave in earthquakes through experiments and observation.
AboutAbout the lab
Measuring building vibrations to understand seismic resistance.
The Kusunoki-Maida Lab mainly studies the behavior of reinforced concrete buildings during earthquakes through experiments and analysis.
The lab conducts experiments in which force is applied to structural members such as columns and beams, as well as experiments in which an entire building is shaken to examine how it moves.
For its research on structural health monitoring, the lab measures and records the vibrations of actual buildings in a variety of regions.
It is an international lab that brings together researchers not only from Japan but from many different countries.
Key terms
- Reinforced concrete construction
- A type of building construction in which steel bars (reinforcing bars) are placed inside concrete to give it both strength and ductility
- Structural health monitoring
- A technology that attaches sensors to a building to measure its vibrations and continuously assess its level of damage and safety
- Yielding
- The state in which, as force is applied to a structural member, deformation begins that does not return to the original shape even after the force is removed
- Seismic retrofitting
- Making an existing building more resistant to earthquakes by adding or repairing structural elements
ResearchResearch themes
The lab mainly studies the behavior of reinforced concrete buildings during earthquakes through experiments and analysis. Its work includes developing structural health monitoring systems, performance-based seismic design methods, repair techniques for existing buildings, and post-earthquake damage surveys.
*Illustrative imageStructural Health Monitoring
The lab studies systems that use data from accelerometers installed in buildings to quickly assess a building's safety after an earthquake. Measurements are carried out in many buildings in Japan and abroad.
*Illustrative imagePerformance-Based Seismic Design
For reinforced concrete members, the lab studies a new calculation method that determines the yield rotation angle by considering deformation components separately, along with the accuracy of that method.
*Illustrative imageEarthquake Damage Surveys
The lab conducts damage surveys of buildings in areas affected by earthquakes. It also observes the vibrations of actual buildings.
*Illustrative imageRepair and Seismic Retrofitting of Old Buildings
The lab studies techniques for repairing existing, aging buildings. It is also working on developing new seismic retrofitting methods.
MembersFaculty
- ProfessorKoichi KusunokiPublications ↗
- Associate ProfessorYusuke MaidaPublications ↗
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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: “Burst column” Polyparadigm / Public domain (cropped)
- Structural Health Monitoring: “Accelerometer-with-wireless-sensor-on-a-hanger” Y. Lei, W. A. Shen, Y. Song, Y. Wang / CC BY 4.0 (cropped)
- Performance-Based Seismic Design: “AC-ReinfView” Tam Wik / CC BY-SA 3.0 (cropped)
- Earthquake Damage Surveys: “Durchstanzbewehrung in einer Decke” Ingbife / CC BY-SA 3.0 (cropped)
- Repair and Seismic Retrofitting of Old Buildings: “Seismic retrofit bolts on apartment house, LA” Downtowngal / CC BY-SA 4.0 (cropped)
- Related lab (Nakano Lab): “Fukuoka Growth Next the seismic retrofit carried out on the former Daimyō Elementary School building Fukuoka 20241231” Hirho / CC BY-SA 4.0 (cropped)
- Related lab (Asai Lab): “2010 Chile earthquake - Building destroyed in Concepción” Claudio Núñez / CC BY-SA 2.0 (cropped)
- Related lab (Tajri Lab): “Fukuoka Growth Next the seismic retrofit carried out on the former Daimyō Elementary School building Fukuoka 20241231” Hirho / CC BY-SA 4.0 (cropped)
- Related lab (Fujita Lab): “Zentsuji Zentsu-ji Garan Five-storied Pagoda 5” Zairon / CC BY 4.0 (cropped)
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