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Geomechanics Laboratory


Staff@

@Tsutomu Namikawa, Dr. Eng.
@Professor
@E-mail : namikawa@shibaura-it.ac.jp

Education

@B. Eng. : Kyoto University (1989)
@M. Eng. : Kyoto University (1991)
@D. Eng. : University of Tokyo (2006)


Paper

@Journal Paper
1) Namikawa T., Koseki J. (2007) : Evaluation of tensile strength of cement-treated sand based on several types of laboratory tests. Soils and Foundations, 47(4), pp.657-674.
2)
Namikawa T., Koseki J., Y.Suzuki. (2007) : Finite element analysis of lattice-shaped ground improvement by cement-mixing for liquefaction mitigation. Soils and Foundations, 47(3), pp.559-576.
3) Namikawa T., Mihira S. (2007) : Elasto-plastic model for cement-treated sand. International Journal for Numerical and analytical Method in Geomechanics. 30(1),pp.71-107.
4) Namikawa T., Koseki J. (2006) : Experimental determination of softening relations for cement-treated sand. Soils and Foundations, 46(4), 491-504.
5)
Namikawa T. (2001) : Delayed plastic model for time-dependent behaviour of materials. International Journal for Numerical and analytical Method in Geomechanics, 25(6), 605-627.

@Conference Paper
1)
Namikawa T.,(2011) : Numerical Study of Bending Strength of Cement-treated Column with Spatial Variability. Proceedings of the International Conference on Advances in Geotechnical Engineering, pp.579-586.
2) Namikawa T. (2011) : Numerical study of failure behavior of cement-treated column with spatial variability. 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, CD-ROM.
3) Namikawa T.,(2011) : Numerical investigation of spatial distribution of deformation in granular media. Computer Methods for Geomechanics Frontiers and New Applications Vol.1, pp381-386.
4) Namikawa T., Koseki J., DeSilva L.I.N. (2011) : Three-dimensional modeling of stress-strain relationship of sand subject to large cyclic loading. 5th International Conference on Earthquake Geotechnical Engineering, CD-ROM.
5) Araki H., Lee J., Sato T., Namikawa T., Koseki J. (2010) : Mechanical properties and seismic behavior of soil walls using remmed earth technique. International Symposium on New Technologies for Urban Safety of Mega Cities in Asia, CD-ROM.
6) Namikawa T., Koseki J. (2009) : Numerical study of effects of spatial variability on cement-treated column strength. Ground Improvement Technologies and Case Histories, pp.419-424.
7) Koseki J., Namikawa T. (2009) : Behavior of lattice-type ground improvement by cement-mixing for liquefaction mitigation. Ground Improvement Technologies and Case Histories, pp.257-262.
8) Namikawa T., Koseki J. (2009) : Size effect on bending strength of cement-treated soils. Deep Mixing 09, CT-7 CD-ROM
9) Namikawa T., Koseki J. (2009) : Performance evaluation of lattice-shaped ground improvement for liquefaction mitigation. Performance-Based Design in Earthquake Geotechnical Engineering, pp.1169-1176.
10) Namikawa T. Koseki J. Suzuki Y. (2008) : Finite element analysis of a full scale bending test of cement treated soil column. 12th International Conference of the International Association for Computer Methods and Advances in Geomechanics, pp.3635-3641.
11) Namikawa T., Koseki J. (2008) : Fracture zone deformation of cement-treated sand in plane strain compression tests. Deformation Characteristics of Geomaterials, pp.371-376.
12) Koseki J. Tsutsumi Y. Namikawa T. Mihira S. Salas-Monge R. Sano Y. Nakajima S. (2008) : Shear and tensile properties of cement-treated sands and their applications of liquefaction-induced damage. Deformation Characteristics of Geomaterials, pp.27-50.
13) Namikawa T. (2006) : Centrifuge model tests on soil reaction along a pile in a liquefiable sand layer. The 6th Int. Conf. on Physical Modelling in Geomechnics, 1029-1035.
14) Namikawa T., Suzuki Y., Koseki J. (2005) : Seismic response analysis of lattice-shaped ground improvements. Deep Mixing 05, 263-271.
15) Namikawa T. (2002) : Application to building foundation. Tokyo Workshop 2002 on Deep Mixing, 233-241.
16) Namikawa T., Togashi K., Nakafusa S., Babasaki R., Hashiba T. (2000) : Dynamic centrifuge test of pile foundations structure, Part one : Behavior of free ground during extreme earthquake conditions. 12th World Conference on Earthquake Engineering, 2443.
17) Babasaki R., Togashi K., Nakafusa S., Hashiba T., Namikawa T., (2000) : Dynamic centrifuge test of pile foundations structure, Part two : Behavior of structure and ground during extreme earthquake conditions. 12th World Conference on Earthquake Engineering, 2444.