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Mitsui Lab
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The lab connects environmental consideration to everything from the performance of steel materials to the design of structural members.
AboutAbout the lab
Steel Structures × Environmental Consideration
Mitsui Lab studies everything from the performance of steel used as a structural material to the evaluation of the structural performance of members and connections.
Most of its research themes are carried out jointly with Igarashi Lab in the same Department of Architecture and Building Engineering.
Because producing iron emits a large amount of carbon dioxide, the lab explores designs that reduce the amount of steel used by devising cross-sectional shapes that allow thinner plates.
The lab's approach is to confirm actual phenomena through structural experiments and verify them with finite element analysis and theoretical analysis.
Key terms
- Buckling
- A phenomenon in which a slender member or thin plate suddenly bends sideways or deflects when it is compressed.
- Thin-walled light-gauge steel
- Steel made by bending thin steel plates. Its cross-sectional shape is designed to achieve both light weight and strength.
- Finite element analysis
- A method of dividing an object into small elements and using a computer to calculate how forces act on it and how it deforms.
NewsLab news
A lab information session was held after the graduate school admissions briefing
A structural performance index from the lab's research results was implemented in a structural analysis program
Associate Professor Mitsui received the Young Researcher Encouragement Award of the Architectural Institute of Japan
Mitsui Lab was established
ResearchResearch themes
The lab studies everything from the performance of steel used as a structural material to the evaluation of the structural performance of members and connections. Because materials, members, and overall behavior are interconnected, the lab conducts research that addresses all of them in an integrated way.
*Illustrative imageH-Section Beam Members
Analysis software for structural design includes hysteresis models for H-section members, but their structural performance is not yet fully understood. By effectively combining fundamental structural experiments and analysis, the lab pursues further possibilities of this type of member.
*Illustrative imageAdvanced Use of Thin-Walled Light-Gauge Steel
Thin-walled light-gauge steel achieves a highly efficient form by optimizing its cross-sectional shape, but its complex shape causes multiple buckling phenomena, which makes structural design difficult. The lab is working to discover new buckling phenomena and establish design methods for them.
*Illustrative imageCLT Floor Slabs and Steel Beams
This research uses CLT floor slabs to improve the structural performance of steel beams. By combining timber members, which have recently attracted attention, with steel members, the lab explores new possibilities for steel members.
*Illustrative imageRepairing Beams Damaged by Earthquakes
This research aims to restore the structural performance of beam members damaged by earthquakes. Assuming the limited materials and workforce available after a disaster, the lab explores repair methods that are effective in a short time.
MembersFaculty
Mitsui Lab consists of faculty members and doctoral, master's, and undergraduate students.As of 2026
- Associate ProfessorKazuya MitsuiPublications ↗
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Write a lab reviewAnonymous · Your draft is saved if you stopRelatedLabs similar to Mitsui Lab
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Yamazaki LabSchool of Environment and Society, Department of Architecture and Building EngineeringBuilding structures, timber structures, earthquake engineeri…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “2512-superstructure-métallique” Thierry Caro, pour le magazine 2512. / CC BY-SA 2.5 (cropped)
- H-Section Beam Members: “I-Beam 002” Todd Murray / CC BY-SA 3.0 (cropped)
- Advanced Use of Thin-Walled Light-Gauge Steel: “WikiCFSbuilding” Dr. Cris Moen, Virginia Tech - Dept. of Civil & Environmental Engineering / Public domain (cropped)
- CLT Floor Slabs and Steel Beams: “Brettsperrholzkonstruktion” RoterRolf / CC0 (cropped)
- Repairing Beams Damaged by Earthquakes: “Duzce 1999 earthquake damage Bilham 883” Roger Bilham / Public domain (cropped)
- Related lab (五十嵐研究室): “Steel frame building under construction in Taiwan” SSJF01 / CC0 (cropped)
- Related lab (石原研究室): “Kochi City Culture-Plaza CUL-PORT03s3872” 663highland / CC BY 2.5 (cropped)
- Related lab (中野研究室): “2015.04 - Amsterdam, photo of a building site - An excavation at the Sarphatistraat for a new hotel; a geotagged free urban picture, in public domain Commons CCO; city photography by Fons Heijnsbroek, The Netherlands ( )” Fons Heijnsbroek from Amsterdam, Netherlands / CC0 (cropped)
- Related lab (山崎義弘研究室): “Byggnadsstomme2” Entheta / CC BY-SA 3.0 (cropped)
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