Prof. Junichiro NIWA



Japanese page

Personal Data:
Date of Birth : January 11, 1956
Place of Birth : Kanazawa, Ishikawa
 
Education:
1974−1978 : Department of Civil Engineering, The University of Tokyo, B. E.
1978−1980 : Master's Course, Graduate School of Civil Engineering,
          The University of Tokyo, M.E.
1980−1983 : Doctor's Course, Graduate School of Civil Engineering,
          The University of Tokyo, Dr. E.
 
Work Experience:
1983−1986 : Assistant Professor, The University of Tokyo
1986−1989 : Associate Professor, Yamanashi University
1989−1998 : Associate Professor, Nagoya University
1998 to date : Professor, Tokyo Institute of Technology
 
International Activity:
  1990−1991 : Visiting Scholar at the University of Kansas, U.S.A.
  1995−1997 : Associate Professor, Asian Institute of Technology, Bangkok (seconded by JICA)
2002.7−2002.8 : Japanese Language Teacher, Preparatory School in Northeast Normal
             University, Changchun, China
 
Affiliations:
 Japan Society of Civil Engineers (JSCE)
 Japan Concrete Institute (JCI)
 Japan Prestressed Concrete Engineering Association (JPCEA)
 International Association for Bridge and Structural Engineering (IABSE)
 International Federation for Structural Concrete (fib)
 American Concrete Institute (ACI)
 
Research Topics:
(1) Application of fracture mechanics of concrete to evaluate the size effect of structural concrete.
(2) Localization phenomenon of compression failure of concrete.
(3) Lattice model analysis for structural concrete subjected to static and/or dynamic loading.
(4) Ultimate shear capacity of prestressed concrete beams.
(5) Application of new materials, and/or new types of structures, such as prestressed concrete beams using pretensioned precast web, reinforced concrete members with steel fiber, super high strength cementitious composites with steel fiber, etc.
(6) Repairing and strengthening method for structural concrete using sprayed fiber reinforced polymer.
(7) Mechanical behavior of concrete using Pinatubo aggregate reinforced with palm fiber.
Selected Journal Papers:
(1997 to date)
1) Choi, I.K., Suzuki, A., Mishima, T., Niwa, J. : A Study of Shear Resisting Behavior on Concrete Beams Reinforced with Steel and/or FRP Rods; Journal of Materials, Concrete Structures and Pavements, JSCE, No.557/V-34, pp.23−33 (1997)

2) Morgan, A., Niwa, J., Tanabe, T. : Size Effect Analysis for Pull-Out Strength by Fictitious Crack Model; Journal of Materials, Concrete Structures and Pavements, JSCE, No.557/V-34, pp.145−157 (1997)

3) El-Behairy, F.M., Niwa, J., Tanabe, T. : A Study of the Fundamental Characteristics of Lattice Model for Reinforced Concrete Beam Analysis; Journal of Materials, Concrete Structures and Pavements, JSCE, No.599/V-40, pp.165−175(1998)

4) Niwa, J., Taweechai, S., Matsuo, T. : Experimental Study to Determine the Tension Softening Curve of Concrete; Journal of Materials, Concrete Structures and Pavements, JSCE, No.606/V-41, pp.75−88(1998)

5) Morgan, A., Niwa, J., Tanabe, T. : Size Effect Analysis for Pullout Strength under Various Boundary Conditions; Journal of Engineering Mechanics, ASCE, Vol. 125, No.2, pp.165−173(1999)

6) Iwanami, M., Otsuki, N., Niwa, J., Kamada, T., Nagataki, S. : A Fundamental Study on Propagation Behavior of Elastic Waves in Concrete; Journal of Materials, Concrete Structures and Pavements, JSCE, No.627/V-44, pp.223−238(1999)

7) El-Behairy, F.M., Niwa, J., Tanabe, T. : Analysis of the RC Columns under Pure Torsion using the Modified Lattice Model in Three Dimensions; Journal of Materials, Concrete Structures and Pavements, JSCE, No.634/V-45, pp.337−348(1999)

8) Itoh, A., Niwa, J., Tanabe, T. : Evaluation of Ultimate Deformation of RC Columns Subjected to Cyclic Loading Based on the Lattice Model; Journal of Materials, Concrete Structures and Pavements, JSCE, No.641/V-46, pp.253−262(2000)

9) Niwa, J., Okamoto, T., Maehori, S. : Application of Super Lightweight Aggregates to Concrete Structures, Concrete Journal, JCI, Vol.38, No.12, pp.3−9(2000)

10) Niwa, J. : Performance Based Design for the 21st Century −Civil Structures−, Concrete Journal, Vol.39, No.1, pp.35−38(2001)

11) Mori, T., Yamamoto, T., Tamehiro, N., Niwa, J. : The State of the Art and the Future Prospects on Long-Span Concrete Arch Bridges, Concrete Journal, Vol.39, No.3, pp.12−20(2001)

12) Lertsrisakulrat, T., Watanabe, K., Matsuo, M., Niwa, J. : Experimental Study on Parameters in Localization of Concrete Subjected to Compression; Journal of Materials, Concrete Structures and Pavements, JSCE, No.669/V-50, pp.309−321(2001)

13) Itoh, A., Niwa, J., Tanabe, T. : Nonlinear Dynamic Analysis of Reinforced Concrete Piers Based on Lattice Model, Journal of Materials, Concrete Structures and Pavements, JSCE, No.676/V-51, pp.27−39(2001)

14) Niwa, J. : Relationships between Experiments and Analyses −Civil Structures−, Concrete Journal, Vol.39, No.9, pp.32−37(2001)

15) Lertsrisakulrat, T., Niwa, J., Yanagawa, A., Matsuo, M. : Concepts of Localized Compressive Failure of Concrete in RC Deep Beams; Journal of Materials, Concrete Structures and Pavements, JSCE, No.697/V-54, pp.215−225(2002)

16) Miki, T., Niwa, J., Lertsamattiyakul, M. : Numerical Evaluation for Seismic Performance of Reinforced Concrete Bridge Piers Using Dynamic Lattice Model, Journal of Materials, Concrete Structures and Pavements, JSCE, No.704/V−55, pp.151−161(2002)

17) Matsuo, M., Niwa, J., Kojima, T. : Numerical Approach of Bond Behavior between Concrete and Fiber Reinforced Plastic Rod, Journal of Materials, Concrete Structures and Pavements, JSCE, No.711/V−56, pp.147−159 (2002)