Research Topics

Research for realization and dissemination of medium- and large-scale wooden buildings

In Europe, large-scale high-rise wooden buildings exceeding 60 m in height have already been realized, and in Japan, the use of fire-resistant timber, CLT, and other modern wood materials is gradually increasing along with their practical application. However, there are a wide range of issues to be addressed, including damage and deformation during major earthquakes, creep properties under high loads, joint details that take fire resistance into consideration, sound and vibration insulation issues, and constructability issues. This laboratory will identify new issues like above, and propose measures to overcome these issues.

Photo：Kouji Fukumoto

Research on hybrid structures combining timber and different types of structures

Combining timber structures with other types of structures makes effective use of wood materials. An example is a hybrid structure in which wood materials such as CLT are used in different types of structures (steel structure, reinforced concrete structure, etc.) as seismic elements. Structural members specialized for seismic elements often do not require fireproof covering, making it easier to apply wood materials to large-scale buildings. In this laboratory, studies on structural performance evaluation as a hybrid structure will be conducted by performing structural experiments and structural analysis.

Photo：Kouji Fukumoto

Research on structural design utilizing the characteristics of various types of wood materials

With the practical application of CLT in Japan, a wide variety of wood materials can now be applied, ranging from conventional linear materials such as columns and beams to thicker platematerials such as CLT and LVL. Our laboratory proposes new structural designs that take advantage of those structural and material characteristics and aims to apply them to actual projects. We will conduct research and development and accumulate knowledge on the elemental technologies necessary for this purpose, especially on the joint technology of each member.

Photo：Kouji Fukumoto

Publication List

【AIJ Journal of Technology and Design】

• Fukumoto, K., Kouda, M., Saito, M., Okazaki, T., Isoda, H. and Yasui, N.：A Case Study and Future Subjects of Steel Frame Hybrid Structure with CLT Infill Shear Walls, AIJ Journal of Technology and Design, Vol. 26, No.64, pp.923-928, 2020.10 (in Japanese)

【Journal of Structural and Construction Engineering】

• Fukumoto K. Kouda M. Kubo K. Usami T. Kitamori A, Miyauchi Y. Isoda H.：Experimental Study on CLT Seismic Panel infilled within Steel Frame, Journal of Structural and Construction Engineering (Transaction of AIJ), Architectural Institute of Japan, Vol. 86, No.787. pp.1345-1356, 2021.9 (in Japanese)
• Fukumoto K. Isoda H：Study on Compressive Stress Transfer in Joints of Steel Frame Hybrid Structure with CLT Infill Shear Wall, Journal of Structural and Construction Engineering (Transaction of AIJ), Architectural Institute of Japan, Vol. 86, No.788. pp.1440-1451, 2021.10 (in Japanese)

【Summaries of Technical Papers of Annual meeting, Summaries of Design Works of Annual Meeting】

• Kitamura T., Isoda H., Fukumoto K., Kumagai T. and Yanagisawa N. ：Experimental study on vertical structural performance of wood-concrete composite floor deck (Part2 Creep deflection of 2,070 days and long term Estimation) , Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Structure Ⅲ, pp.205-206, 2012.9 (in Japanese)
• Fukumoto K., Isoda H., Kitamura T., Kumagai T. and Yanagisawa N. ：Experimental study on vertical structural performance of wood-concrete composite floor deck (Part3 Verification by F.E.M. analysis and prediction method for creep deflection), Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Structure Ⅲ, pp.207-208, 2012.9 (in Japanese)
• Fukumoto K., Ohno M., Kumagai T., Nishizaki T. ：Structural Design of Osaka Timber Trading Association Building, Summaries of Design Works of Annual Meeting, Architectural Institute of Japan, pp.230-231, 2013.8 (in Japanese)
• Koda M., Teramura Y., Fukumoto K., Matubara Y. ：Structural and Space Design to Expand Flexibility in the design of CLT Panel Method, Summaries of Design Works of Annual Meeting, Architectural Institute of Japan, pp.416-417, 2018.7 (in Japanese)

【Technical Journal】

• Fukumoto K. ：CLT+Steel Hybrid Structure for Mid-rise Building with CLT (Hyogo Forestry Hall), The Kenchiku Gijutsu, No.833, pp.140-145, 2019.6(in Japanese)
• Kobayashi M., Hanai A., Kitagawa M., Fukumoto K. ：Technical Development of Joints for Fire-Resistant Building Design and Examples (Special Feature: Changing Fire-Resistant Design of Fire-Resistant Buildings) (Examples of Fire-Resistant Design for Wooden Buildings), The Kenchiku Gijutsu, No.837, pp.122-127,2019.10 (in Japanese)
• Fukumoto K., Kubo K. ：Architectural design "Takuma Building New Annex (Training Center)", The Kenchiku Gijutsu, No.857, pp.30-33,2021.6 (in Japanese)