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Sustainable Seismic Structures Lab
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The lab studies seismic performance by focusing on connections in steel and CFT structures.

AboutAbout the lab
Developing and designing better connections.
The Sustainable Seismic Structures Lab focuses its research on connections in steel structures and concrete-filled steel tube (CFT) structures.
Since the Great Hanshin-Awaji Earthquake, the importance of keeping buildings in use and restoring them quickly has been widely recognized again, and the scope of structural engineering research has broadened in many directions.
At the core of the lab's research is the development of connections that are superior not only in mechanical rationality but also in constructability, economy, and sustainability, as well as the development of more rational design methods for existing connections.
Every day, the lab works on structural experiments and analysis.
Key terms
- Concrete-filled steel tube (CFT)
- A structure made by filling a steel tube with concrete. The name CFT comes from the initials of the English term.
- Connection
- The part that joins members supporting a building, such as a column and a beam.
- High-strength bolt
- A high-strength bolt that joins steel members by clamping them together with strong force.
ResearchResearch themes
As continued use and rapid recovery of buildings are increasingly emphasized, the lab focuses on connections in steel and CFT structures, working on developing better connections and developing design methods for existing connections. It aims for connections that satisfy not only mechanical rationality but also constructability, economy, and sustainability.
*Illustrative imageDevelopment of Superior Connections and Design Methods
Centering on connections in steel and CFT structures, the lab is developing connections that are also superior in constructability, economy, and sustainability. The development of methods to design existing connections more rationally is also at the core of its research.
*Illustrative imageConnection Technologies for High-Strength Materials
In recent years, various high-strength materials have been developed, and members and connections are required to have even higher load-bearing capacity. The lab works both on adapting existing connection technologies such as welding and high-strength bolts, and on developing new technologies not bound by existing ones.
MembersFaculty
The members of the Sustainable Seismic Structures Lab consist of faculty, academic research collaborators, and students in the doctoral program, master's program, and undergraduate program.
- Associate ProfessorShintaro Matsuo
VoicesStudent voices
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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: “Steel floor joist bolted connection detail, Stone County Missouri” K&K Data Service Inc. / CC BY 4.0 (cropped)
- Development of Superior Connections and Design Methods: “Steel frame structure” Wikideas1 / CC0 (cropped)
- Connection Technologies for High-Strength Materials: “Microstructure of welded joint of AISI 430” Sérgio Souto Maior Tavares, Luis Felipe Guimarães de Souza, Tatiane de Campos Chuvas, Cássio Lapate da Costa Machado, & Brígida Bastos de Almeida / CC BY 4.0 (cropped)
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- Related lab (循環建築構造学研究室): “Fukuoka Parco Main Bldg the seismic retrofit 11-1 Tenjin 2-chōme Chūō-ku Fukuoka 20231114” Hirho / CC BY-SA 4.0 (cropped)
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