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HOME > program member > KOMATSU, Kohei

KOMATSU, Kohei

Division：Research Institute for Sustainable Humanosphere Professor
Main Research: Initiative 3 "The Forestry Model of Sustainable Humanosphere"
Project Title：

Research Theme：　
 

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References：　
 

  • Wen-Shao Chang, Kohei Komatsu, Min-Fu Hsu and Wei-Jye Chen : On mechanical behavior of traditional timber shear wall in Taiwan I: background and theory derivation, Journal of Wood Science, 53(1), 17-23, 2007.

 

2007 G-COE Research Outcome
 

  • Wen-Shao Chang, Kohei Komatsu, Min-Fu Hsu and Wei-Jye Chen : On mechanical behavior of traditional timber shear wall in Taiwan II: simplified calculation and experimental verification, Journal of Wood Science, 53(1), 24-30, 2007
  • Wen-Shao Chang, Kohei Komatsu, Min-Fu Hsu and Wei-Jye Chen : On mechanical behavior of traditional timber shear wall in Taiwan I: background and theory derivation ､Journal of Wood Science, 53(1), 17-23, 2007

 

List of Academic Presentations during 2007:
 

  • Kohei Komatsu: “State of the Arts on Timber Constructions in Japan”, at NATIONAL SEMINAR - System of Preparing Quality Timber for Construction-, Building Research Institute, Division of Human Settlement, Bandung, 27 November, 2007.

 

2008 G-COE Research Outcome:

  • Kweonhwan Hwang, Eeding Wong and Kohei Komatsu: Flexural, in-plane shear and nail shear properties of falcataria-rubberwood laminated veneer board for flooring, Holzforschung, Vol.62, pp.731-736, 2008
  • Ivon Hassel, Pierre Berard and Kohei Komatsu : Development of wooden blocks’ shear wall -Improvement of stiffness by utilizing elements of densified wood - Holzforschung, 62(5), 584-590, 2008
  • Shanks J D, Wen-Shao Chang, Kohei Komatsu : Experimental study on mechanical performance of all-softwood pegged mortice and tenon connections, Biosystems Engineering (2008), doi:10.1016/j.biosystemseng.2008.03.012
  • Kiho Jung, Akihisa Kitamori and Kohei Komatsu：Evaluation on structural performance of compressed wood as shear dowel, Holzforschung, Vol. 62, pp. 461–467, 2008
  • Z.W.Guan, A. Kitamori and K. Komatsu：Experimental study and finite element modelling of Japanese “Nuki” joints — Part one: Initial stress states subjected to different wedge configurations, Engineering Structures 30, 2032–2040,2008
  • Z.W. Guan, A. Kitamori and K. Komatsu：Experimental study and finite element modelling of Japanese “Nuki” joints — Part two: Racking resistance subjected to different wedge configurations, Engineering Structures 30, 2041–2049, 2008
  • Makoto Nakatani, Takuro Mori, Kohei Komatsu：Study on the Beam-Column Joint of Timber Frame Structures using Lagscrewbolts and Special Connectors, Journal of Structural and Construction Engineering, Transactions of AIJ, No.626, 599-606, 2008. (in Japanese) (2008.4.30issued)
  • Takeshi Shiratori, Kohei Komatsu, Adrian Leijten :Modified traditional Japanese timber joint system with retrofitting abilities, Structural Control and Health Monitoring, Published Online: Feb 8 2008 1:18PM,DOI: 10.1002/stc.240

 

 

List of Academic Presentations during 2008:
 

  • Atsushi Tabuchi, Yoshihiro Murata, Takuro Mori and Kohei Komatsu : “Development of an Aesthetic and Strong Shear Wall using Kitayama-maruta Logs”, Proceedings of the World Conference on Timber Engineering 2008, paper.440 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Yasunobu Noda, Takuro Mori and Kohei Komatsu : “Experimental Study on the Moment Transmitting Performance of Large Finger Joint”, Proceedings of the World Conference on Timber Engineering 2008, paper.437 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Makoto Nakatani, Takuro Mori and Kohei Komatsu : “Design method for Moment-Resisting Joint Composed by Multiple Lagscrewbolts”, Proceedings of the World Conference on Timber Engineering 2008, paper.435 (CD-ROM), Miyazaki, June 2-5, 2008
  • Shigeaki Kawahara, Takushi Nakashima, Takeshi Shimizu, Makoto Nakatani, Takuro Mori and Kohei Komatsu : “Introduction of Joint System and Timber Constructions Composed of Lagscrewbolt (LSB)”, Proceedings of the World Conference on Timber Engineering 2008, paper.425 (CD-ROM), Miyazaki, June 2-5, 2008. 
  • Kiho Jung, Akihisa Kitamori, Munekazu Minami and Kohei Komatsu : “Development of Joint System using by Compressed Wooden Fastener”, Proceedings of the World Conference on Timber Engineering 2008, paper.304 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Maryoko Hadi, Bambang Subiyanto, Anita Firmanti and Kohei Komatsu : “The Braced Frame Shear Wall made of Acacia Mangium Fastened by nails for Anti-Seismic Wooden House”, Proceedings of the World Conference on Timber Engineering 2008, paper.270 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Satoru Murakami, Tomihiko Tamaoka, Hidenobu Kadowaki and Kohei Komatsu : “The Improvement of Single-braced Shear Wall System”, Proceedings of the World Conference on Timber Engineering 2008, paper.262 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Takuro Mori, Makoto Nakatani, Shigeaki Kawahara, Takeshi Shimizu and Kohei Komatsu : “Influence of the Number of Fastener on Tensile Strength of Lagscrewbolted Glulam Joint”, Proceedings of the World Conference on Timber Engineering 2008, paper.197 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Kohei Komatsu, Mitsushi Akagi, Chiori Kawai, Takuro Mori, Shingo Hattori and Kiyoshi Hosokawa : “Improved Column-Beam Joint in Glulam Semi-Rigid Portal Frame”, Proceedings of the World Conference on Timber Engineering 2008, paper.185 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Ying H. Chui, Kohei Komatsu, Kiho Jung, Yasunobu Noda, Yoshinori Ohashi and Masahiko Toda : “Reinforcement of wood I-joists with natural fibers”, Proceedings of the World Conference on Timber Engineering 2008, paper.175 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Akihisa Kitamori, Kiho Jung, Munekazu Minami and Kohei Komatsu: “Improvement of Shear Resistance on Traditional Lattice Shear Wall”, Proceedings of the World Conference on Timber Engineering 2008, paper.124 (CD-ROM), Miyazaki, June 2-5, 2008.
  • Kohei Komatsu : “Research and Developments for Enhancing Seismic Performance of Wooden Dwelling Houses in Recent Japan”, 73rd Symposium on Sustainable Humanosphere - RISH-LAPAN-LIPI International Symposium, Science for Sustainable Humanosphere, International Collaborative Programs in Indonesia, LAPAN, Bandung, Indonesia, July 25, 2007

 

2009 G-COE Research Outcome:

  • Jung Kiho, Akihisa Kitamori, Kohei Komatsu : Development of a joint system using a compressed wooden fastener I: evaluation of pull-out and rotation performance for a column-sill joint, Journal of Wood Science, 55(4), 273-282, 2009.
  • Takeshi Shiratori, A.J.M. Leijten and Kohei Komatsu:The structural behaviour of a pre-stressed column beam connection as an alternative to the traditional timber joint system, Engineering Structures, 31, 2526-2533, 2009.
  • Wen-Shao Chang, Jonathan Shanks, Akihisa Kitamori and Kohei Komatsu: The structural behaviour of timber joints subjected to bi-axial bending, Earthquake Engineering and Structural Dynamics, 38, pp.739–757, 2009.

 

List of Academic Presentations during 2009:

  • Ivón Hassel, Akihisa Kitamori, Kiho Jung, Kohei Komatsu : Shear Performance of Prefabricated Japanese Mud Wall Units – Superficial Fissure Growth Evaluation Using DSP, Proceedings of the 11th International Conference on Non-conventional Materials and Technologies (NOCMAT 2009), 6-9 September 2009, Bath, UK
  • Takuro Mori, Akihisa Kitamori, Kiho Jung, Munekazu Minami, and Kohei Komatsu : Enhancing The Bending Stiffness of A Compound Timber Beam Using A Pin-Keyed Joint, Proceedings of the 11th International Conference on Non-conventional Materials and Technologies (NOCMAT 2009), 6-9 September 2009, Bath, UK
  • Kohei Komatsu, Akihisa Kitamori, Kiho Jung and Takuro Mori: Estimation of The Mechanical Properties of Mud Shear Walls Subjecting to Lateral Shear Force, Proceedings of the 11th International Conference on Non-conventional Materials and Technologies (NOCMAT 2009), 6-9 September 2009, Bath, UK
  • Akihisa Kitamori, Kiho Jung, Kohei Komatsu : Utilization of Compressed Wood as Mechanical Fasteners of Friction Joints in Timber Buildings, Proceedings of the 11th International Conference on Non-conventional Materials and Technologies (NOCMAT 2009), 6-9 September 2009, Bath, UK
  • Kiho Jung, Satoru Murakami, Akihisa Kitamori, Kohei Komatsu：Improvement of Glued In Rod (Gir) Joint System Using Compressed Wooden Dowel, Proceedings of the 11th International Conference on Non-conventional Materials and Technologies (NOCMAT 2009), 6-9 September 2009, Bath, UK

 

 

2010  Research Outcome:
 

  • Takeshi Shiratori, Adrian J. M Leijten and Kohei Komatsu: Optimisation of Pre/post Stressed Embedment-Type Timber Joint, Structures and Buildings, Proceedings of the Institution of Civil Engineers (UK), doi: 10.1680/stbu.9.00070, 2011.
  • Maryoko Hadi, Satoru Murakami, Akihisa Kitamori, Wen-Shao Chang and Kohei Komatsu : Performance of Shear Wall Composed of LVL and Cement Fiber Board Sheathing, Journal of Asian Architecture and Building Engineering, vol.9 No.2 November, 463-469, 2010.
  • Buan Anshari, Zhongwei Guan, Akihisa Kitamori, Kiho Jung, Ivon Hassel and Kohei Komatsu: Mechanical and Moisture-Dependent Swelling Properties of Compressed Japanese Cedar, Construction and Building Materials, Vol.25, 1718-1725, 2010.
  • Kohei Komatsu :　Analyses on Though-Bolts Type Wooden Beam-Column Joints Subjected to Rotational Moment, WOOD RESEARCH Journal-Journal of Indonesian Wood Research Society, Volume 1, Number 1, 13-22, April 2010.
  • Jung Kiho, Akihisa Kitamori, Kohei Komatsu : Development of a joint system using a compressed wooden fastener Ⅱ: evaluation of rotation performance for a column-beam joint, Journal of Wood Science, 56(2), 118-126, 2010.

 

List of Academic Presentations during 2010:
 

  • Satoru Murakami, Kiho Jung, Akihisa Kitamori, Kohei Komatsu : Study for Bearing Performance Reinforced by Screws, Proceedings of WCTE2010, Paper ID 621, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Atsushi Tabuchi, Takuro Mori, Satoru Murakami, Kohei komatsu : An Effct of Lapped Length Of Kanawa-Tsugi Connection On A Bending Performance As A Jpanese Traditional Connection, Proceedings of WCTE2010, Paper ID 460, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Wen-Shao Chang, Kohei Komatsu : Experiment On Traditional Timber Connections Subjected To Bi-Axial Bending, Proceedings of WCTE2010, Paper ID 829, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Buan Anshari, Zhongwei Guan, Kohei Komatsu : Finite Element Modeling Of The Pre-Camber Of Glulam Beams Reinforced By Compressed Wood, Proceedings of WCTE2010, Paper ID 366, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Zhongwei Guan, Kohei Komatsu, Kiho Jung and Akihisa Kitamori : Structural Characteristics Of Beam-Column Connections Using Compressed Wood Dowels And Plates, Proceedings of WCTE2010, Paper ID 324, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Yasunobu Noda, Naoyuki Furuta, Kohei Komatsu : Development Of Compressed Cross-Lapped Corner Members For Rigid Frames, Proceedings of WCTE2010, Paper ID 471, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Akihisa Kitamori, Kiho Jung, Ivon Hassel, WenShao Chang, Kohei Komatsu, Yoshiyuki Suzuki : Mechanical Analysis Of Lateral Loading Behaviour On Japanese Traditional Frame Structure Depending On The Vertical Load, Proceedings of WCTE2010, Paper ID 698, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Buan Anshari, Zhongwei Guan, Kohei Komatsu, Akihisa Kitamori, Kiho Jung : Explore Novel Ways To Strengthen Glulam Beams By Using Compressed Japanese Cedar, Proceedings of WCTE2010, Paper ID 365, (CD-ROM) , June 20-24, Riva Del Garda, Trentino, Italy,2010.
  • Takuro Mori, Munekazu Minami, Kiho Jung, Akihisa Kitamori, Kohei Komatsu: Development Of Reinforce Method For Bending Stiffness Of Compound Beam Using Pin-Keyed Joint, Proceedings of WCTE2010, Paper ID 560, (CD-ROM), June 20-24, Riva Del Garda, Trentino, Italy, 2010.
  • Kohei Komatsu, Akihisa Kitamori, Kiho Jung and Takuro Mori : Prediction Of Non-Linear Load-Deformation Curves Of Various Types Of Mud Shear Walls Subjected To Lateral Shear Force, Proceedings of WCTE2010, Paper ID 557, (CD-ROM), June 20-24, Riva Del Garda, Trentino, Italy, 2010.

 

2011 G-COE Research Outcome:

  • Buan Anshari, Zhongwei Guan, Akihisa Kitamori, Kiho Jung and Kohei Komatsu: Structural behaviour of glued laminated timber beams pre-stressed by compressed wood, Construction and Building Materials 29, 24–32, 2012
  • Wen-Shao Chang, Min-Fu Hsu and Kohei Komatsu：A new proposal to reinforce planked timber shear walls, Journal of Wood Science, 57(6), 493-500, 2011
  • Takeshi Shiratori, Adrian J. M Leijten and Kohei Komatsu :Optimisation of Pre/post Stressed Embedment-Type Timber Joint, Structures and Buildings, Proceedings of the Institution of Civil 　Engineers (UK), doi: 10.1680/stbu.9.00070, 2011.

 

List of Academic Presentations during 2011:

  • Kohei Komatsu and Akihisa Kitamori：Proceedings of the 3rd International Symposium of Indonesia Wood Research Society, "Static and Dynamic Properties of Portal Frames 　Composed of Built-Up Sawn Square Timber", November 3-4, Yokuyakarta, Indonesia, 2011.
  • Kohei Komatsu：Leynote Lecture at the 3rd International Symposium of Indonesia Wood Research Society,　"Utilization of Low Grade Timber to Engineered Wood Products (EWP) and Current Situation of Large Scale Timber Structures made of EWP", November 3-4, Yokuyakarta, Indonesia, 2011..

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