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Researcher information
Nakahara Hiroyuki Last modified date：2012.11.8

Associate Professor / Structural Engineering and Disaster Mitigation Section
Department of Architecture and Urban Design
Faculty of Human-Environment Studies


Graduate School
Department of Architecture
Graduate School of Human-Environment Studies
Undergraduate School
Department of Architecture
School of Engineering


E-Mail
Phone
092-642-3326
Fax
092-642-4111
Academic Degree
Doctor of Engineering
Field of Specialization
Structural Engineering
Outline Activities
The research and education of structural engineering are promoted
Research
Research Interests
  • A study for structural performance of RC buildings
    keyword : RC，Seismic performance
    1994.04.
  • Develpment for RC Frames with Self-Centering Capacity
    keyword : damage control, dry type joint
    2006.04.
  • Development of Seismic Retrofitting Method for Existing RC Frame by Compressive Brace
    keyword : Seismic Retrofitting, CFT Brace
    2006.04.
  • SEISMIC URBAN FACTOR TO PREVENT SEVERE DAMAGE BY MAJOR EARTHQUAKE

    keyword : Load Factor, Damaged Buildings, Seismic Hazard, Scale of Cities
    2000.04.
  • A study for structural performance of CFT buildings
    keyword : CFT, Seismic performance
    1994.04.
Current and Past Project
  • “Recommendations for Design and Construction of Concrete Filled Steel Tubular (CFT) Structures” was published in 1997 and revised in 2008 in Japan. The calculating methods for axial strength and flexural strength of CFT columns were established on the bases of the experimental results of total of more than 400 specimens, however the test results of the columns which fail in shear were referred to only 12 specimens in the Recommendations. It is necessary to accumulate the experimental data of shearing strength and behavior of CFT columns. Tests were carried out on five specimens of the circular CFT columns with shear span ratio of 0.5. The diameter to thickness ratio of the steel tube was around 30. They were subjected to cyclic lateral force under constant axial force. All specimens failed in shear before flexural yielding. The shearing capacities were estimated within 20% errors by the calculating method of the CFT Recommendations in Japan.
Academic Activities
Books
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1. Structural mechanics for building.
2. Recommendations for desing and construction of concrete filled steel tubular structures.
3. Report on the Damage Investigation of the 2005 West off Fukuoka Earthquake.
4. A Method for Evaluationg Load Carrying Capacity and Ductility of Concrete Filled Square Steel Tubular Columns
.
Reports
 Show All Reports >>
1. Isao Nishiyama, Shosuke Morino, Kenji Sakino, Hiroyuki Nakahara, Toshiaki Fujimoto, Akiyoshi Mukai, Eiichi Inai, Makoto Kai, Hiroyoshi Tokinoya, Toshiyuki Fukumoto, Koji Mori, Kenzo Yoshioka, Osamu Mori, Kenji Yonezawa, Mizuaki Uchikoshi and Yukio Hayashi,Summary of　Research　on　Concrete-Filled　Structural　Steel　Tube　Column　System　Carried　out　under　The　US-Japan　Cooperative Research Program on Composite and Hybrid Structures,ISSN 0453-4972, BRI Research Paper No.147,2002.01.
Papers
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1. Hiroyuki Nakahara, Shinya Tokuda,Shearing Behavior of Circular CFT Short Columns,Proceedings of the 10th International Conference on Advances in Steel Concrete Composite and Hybrid Structures,pp.pp.362-369,pp.362-369,2012.06.
2. BASIC INVESTIGATION FOR EVALUATION OF SEISMIC CAPACITY OF GYMNASIUM WITH TENSILE YIELDING ROOF BRACES.
3. Analytical Study on Dynamic Response of RC Buildings Retrofitted by Compressive CFT Braces.
4. Dynamic Response Analysis on Hybrid Structural Systems Composed of Self-Centering Frames and Energy Dissipation Walls.
5. Analytical Study for Evaluating the Seismic Performance of Cantilever-Wall Systems.
6. Hysteretic Behavior of RC Columns Externally confined with PC Bars Prestressing.
7. Experimental Study on Elastic and Plastic Behavior of 3-Story Energy Dissipation Structural Walls With R/C Short Columns.
8. An Experimental Study of RC Frame Retrofitted by CFT Brace Acting in Compressive Stress.
9. Analytical Study for Evaluating the Seismic Performance of RC Building Retrofitted by Compressive Braces.
10. Experimental Study for Developing Self-Centering RC Structural Frames with Column-Yielding Mechanism.
11. 中原 浩之，崎野 健治,Hysteretic Behavior of Concrete Filled Steel Tubular Columns under Uniform Bending,International Symposium on Confined Concrete, American Concrete Institute, SP-238,SP-238, pp.289-304,2006.10.
12. 中原 浩之，崎野 健治,Cyclic Loading Test on 2-strory CFT Frames,Proceedings of 8th ASCCS, Harbin, China,pp.780-784,2006.08.
13. 中原 浩之，崎野 健治,Seismic Behavior of RC Column Retrofitted by High Strength Steel Bars,Proceedings of 8th NCEE, San Francisco, USA,DVD-ROM,2006.04.
14. 中原 浩之，松村 和雄,Seismic Urban Factor to Prevent Severe Damage by Major Earthquake,Proceedings of 13th WCEE, Vancouver, Canada,CD-ROM,2004.08.
15. Sakino Kenji, Nakahara Hiroyuki, Morino Shosuke, Isao Nishiyama,Behavior of centrally Loaded Concrete-Filled Steel-Tube Short Columns,Journal of Structural Engineering, ASCE,Vol.130, Number 2, pp.180-188,2004.02.
16. 中原浩之，崎野健治，松村和雄,Effect of Uncertainties of Material Strengths on Load Carrying Capacity and Ductility of CFT Column,Proceedings of 6th PSSC, Beijing, China,Vol.2, pp.1147-1152,2001.10.
17. 中原 浩之，崎野 健治,Practical Analysis for High-Strength CFT Columns under Eccentric Compression,Proceedings of 6th ASCCS Conference, Los Angeles, USA,Vol.1, pp.441-448,2000.03.
18. 崎野健治，中原浩之,Flexural Capacities of Concrete Filled Square Steel Tubular Beam-Columns with High Strength Concrete,Proceedings of 6th ASCCS Conference, Los Angeles, USA,Vol.1, pp.473-480,2000.03.
19. 中原浩之，崎野健治,Flexural Behavior of Concrete Filled Square Steel Tubular Beam-Columns,Proceedings of 12th WCEE, Auckland, New Zealand,CD-ROM,2000.01.
20. 中原浩之，崎野健治,Axial Compressive and Uniform Bending Tests of High Strength Concrete Filled Square Steel Tubular Columns,Proceedings of 5th PSSC, Seoul, Korea,Vol.2, pp.943-948,1998.10.
21. 崎野健治，稲井栄一，中原浩之,Tests and Analysis on Elasto-Plastic Behavior of CFT Beam-Columns,Proceedings of 5th PSSC, Seoul, Korea,Vol.20, pp.171-178,1998.10.
22. 中原浩之，崎野健治，稲井栄一,Analytical Model for Compressive behavior of Concrete Filled Square Steel Tubular Columns,Transactions of JCI,Vol.20, pp.171-178,1998.09.
23. 崎野健治，蜷川利彦，中原浩之，森野捷輔,Experimental Studies and Design Recommendations on Concrete Filled Steel Tubular Columns (U.S.-Japan Cooperative Earthquake Research Program),Proceedings of Structural Engineers World Congress, San Francisco, California
,CD-ROM,1998.07.
Presentations
 Show All Presentations >>
1. Seismic Behavior of RC Column Retrofitted by High Strength Steel Bars.
2. Cyclic Loading Test on 2-strory CFT Frames.
Membership in Academic Society
  • Architectural Institute of Japan
  • Japan Concrete Institute
Awards
  • A Study for Seismic Retrofit by CFT Compressive Brace for Existing RC Buildings
  • Analytical Investigation and Retrofitting Plan for Damaged RC Building
  • Analytical Study for Evaluating the Seismic Performance of RC Building Retrofitted by Compressive Braces
Educational
Educational Activities
structural engineering, structural mechanics, reinforced concrete structure, steel-concrete composite structure


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