Department of Civil Engineering

Akihisa kitamori

  (北守 顕久)

Profile Information

Affiliation
Associate Professor, Faculty of Engineering, Department of Civil Engineering, Osaka Sangyo University
Degree
博士(農学)(京都大学)

Researcher number
10551400
J-GLOBAL ID
201401050039285563
researchmap Member ID
7000008790

Research Interests

 3

Papers

 97
  • Yoshiaki Wakashima, Koichiro Ishikawa, Hidemaru Shimizu, Akihisa Kitamori, Doppo Matsubara, Shingo Hanai, Solomon Tesfamariam
    Engineering Structures, 307, May 15, 2024  
    Prestressing in wood connection, due to frictional forces, improves mechanical properties of the connection. This paper presents novel friction-based connectors, and corresponding tests at the connection and system levels. The friction-base connector is composed of a softwood or hardwood dowels inserted into the wood-based material and tightened to generate frictional force. Long-term performance was evaluated by stress relaxation tests and time-dependent connection tests. To evaluate dynamic performance of shear walls with friction-based connectors, shake table tests were conducted. The shake table tests showed that the restoring force characteristics of the wood friction shear walls were bilinear reflecting the behaviors of the friction-based connectors. The strength degradation of the wood friction shear walls due to cyclic input was small that more seismic inputs could be applied before any significant damage to the wood friction shear wall. Results of stress relaxation tests, for periods of 1 to 3 years, showed that the stresses were maintained at 70–90% under uncontrolled environment. On the other hand, the results of time-dependent connection tests, for 1 to 6 years, showed high initial clamping stresses caused large performance loss, but high performance could be maintained when tightened below the allowable stress for sustained loading.
  • Hiroshi Isoda, Tokikatsu Namba, Akihisa Kitamori, Takuro Mori, Tatsuya Miyake, Takafumi Nakagawa, Solomon Tesfamariam
    Journal of Structural Engineering, 149(5), May, 2023  
  • Kohei KOMATSU, Akihisa KITAMORI, Takafumi NAKAGAWA, Shoichi NAKASHIMA, Hiroshi ISODA
    Journal of Structural and Construction Engineering (Transactions of AIJ), 88(806) 609-620, Apr 1, 2023  
  • Zherui Li, Hiroshi Isoda, Akihisa Kitamori, Takafumi Nakagawa, Yasuhiro Araki, Zeli Que
    Engineering Structures, 253 113764-113764, Feb, 2022  
  • Zherui Li, Hiroshi Isoda, Akihisa Kitamori, Takafumi Nakagawa, Yasuhiro Araki, Naohito Kawai
    Journal of Wood Science, 67(1), Dec, 2021  
    <title>Abstract</title>In this study, the columns with interior notches in traditional Japanese timber frames were selected as the research object, and static bending tests were performed to investigate the effect of interior notches on the flexural properties of columns. First, the bending behaviors of columns under three-point and four-point load configurations were compared to obtain a suitable referenced strength of a column without notches. The reduction in the load-bearing capacity of columns with different types of interior notches in traditional Japanese timber structures was determined through experimental tests and statistical analysis. The results indicated that the mean bending strength of columns with three different notch types was consistent with those without notches, the continuous timber on both sides of the notch had a beneficial effect on maintaining a higher strength and reducing the stress intensity around the notch. The fracture position and the standard deviation of the bending strength were affected not only by the notch depth, but also by the notch width on the tensile side of the column.

Misc.

 252

Books and Other Publications

 4

Presentations

 34
  • Doppo Matsubara, Yoshiaki Wakashima, Hidemaru Shimizu, Akihisa Kitamori, Koichiro Ishikawa, Yasushi Fujisawa
    61st International Convention of Society of Wood Science and Technology, Nov, 2018
  • Akihisa KITAMORI, Mami WADA, Hiroshi ISODA, Takafumi NAKAGAWA, Yasuhiro ARAKI
    Proceedings of the World Conference on Timber Engineering (WCTE 2018), Seoul, Korea, Aug 20, 2018
    本研究では、有開口CLTパネルの隅角部の耐力性能評価を目的に、L型のCLT部材の面内せん断試験を行った。応力分布計測などから、入り隅部の応力集中を明らかとし、耐力推定式を提案した。
  • Zherui LI, Zeli QUE, Xiaolan ZHANG, Kohei KOMATSU, Akihisa KITAMORI, Hiroshi ISODA, Hongyi LV
    Proceedings of the World Conference on Timber Engineering (WCTE 2018), Seoul, Korea, Aug 20, 2018
    本研究では、中国の伝統構法における斗栱組物の水平せん断特性を評価した。実大試験体の振動台試験を実施し、樹種などの違いが粘性減衰や剛性に及ぼす影響を明らかとした。
  • Xiao Lan ZHANG, Ze Li QUE, Zhe Rui LI, Kohei KOMATSU, Akihisa KITAMORI, Hiroshi ISODA
    Proceedings of the World Conference on Timber Engineering (WCTE 2018), Seoul, Korea, Aug 20, 2018
    本研究では、有開口のLVL梁の曲げせん断強度に関し、スクリュー補強法を開発・評価を行った。各種のパラメータを変化させた実験値はDINの推定式によって説明することができた。
  • Yoshiaki WAKASHIMA, Hidemaru SHIMIZU, Koichiro ISHIKAWA, Akihisa KITAMORI, Doppo MATSUBARA, Yasushi FUJISAWA
    Proceedings of the World Conference on Timber Engineering (WCTE 2018), Seoul, Korea, Aug 20, 2018
    本研究では、木造軸組構法住宅に組み込むための安価なダンパーとして、圧密木材を利用した木製摩擦ダンパーを開発した。これを組み込んだ面材構面の実大振動台試験を行うことでその有用性を示した。

Teaching Experience

 7
  • Apr, 2021 - Present
    構造力学1  (大阪産業大学工学部都市創造工学科)
  • Apr, 2020 - Present
    構造工学  (大阪産業大学工学部都市創造工学科)
  • Apr, 2020 - Present
    構造力学演習  (大阪産業大学工学部都市創造工学科)
  • Apr, 2020 - Present
    構造力学2  (大阪産業大学工学部都市創造工学科)
  • Apr, 2013 - Mar, 2019
    建築と社会  (中部大学工学部建築学科)

Professional Memberships

 4

Research Projects

 12

研究テーマ

 5
  • 研究テーマ(英語)
    構造用製材の強度性能評価に関する研究
    研究期間(開始)(英語)
    2024/01
  • 研究テーマ(英語)
    伝統木造建築物の耐力要素の評価に関する研究
    研究期間(開始)(英語)
    2002/04/01
  • 研究テーマ(英語)
    木質構造用接合技術開発に関する研究
    研究期間(開始)(英語)
    2006/04/01
  • 研究テーマ(英語)
    大規模木構造の耐震性能に関する研究
    研究期間(開始)(英語)
    2009/04/01
  • 研究テーマ(英語)
    木材の土木構造利用に関する研究
    研究期間(開始)(英語)
    2020/04/01