ABSTRACT: The combined use of a geogrid-reinforced soil wall with a fibre-mixed soil-cement wall (GRSW-FSC) has recently been developed, and its application has grown rapidly. The results of previous centrifuge shaking-table tests have clearly shown the effectiveness of the GRSW-FSC to achieve a higher seismic stability than conventional reinforced soil walls. The current research investigates the effect of geogrid arrangement and the width of the soil-cement wall in order to develop a new rational design method for GRSW-FSCs in field applications. To achieve this goal, a series of centrifuge shaking-table tests was conducted. The results show that even if the width of the fibre-mixed soil-cement wall is reduced by 20%, the GRSW-FSC has enough seismic stability to resist severe seismic motions. Moreover, the effect of the length of the geogrid located at the upper part of the wall plays a more important role in seismic stability than that at the lower part. Based on these two results, a new design concept was developed. The procedure for this new design method is addressed in detail in this paper, and some examples of case studies using this new design concept are given.
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August 2009
Research Article|
August 01 2009
Development of rational seismic design method for geogrid-reinforced soil wall combined with fibre-mixed soil-cement and its applications
J. Izawa;
J. Izawa
1
Department of Civil Engineering, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro-ku, Tokyo 152-8552, Japan, Telephone: +81 3 5734 2798; Telefax: +81 3 5734 3577,E-mail: jizawa@cv.titech.ac.jp
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H. Ito;
H. Ito
2
Dai Nippon Construction, 6-16-6 Nishi-Shinjuku, Sinjuku-ku, Tokyo 160-0023, Japan,Telephone: +81 3 5326 3939, Telefax: +81 3 5326 3945, E-mail: hideyuki_ito@dnc.co.jp
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T. Saito;
T. Saito
3
Dai Nippon Construction, 6-16-6 Nishi-Shinjuku, Sinjuku-ku, Tokyo 160-0023, Japan,Telephone: +81–3 5326 3939, Telefax: +81 3 5326 3945, E-mail: tomoya_saito@dnc.co.jp
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M. Ueno;
M. Ueno
4
Shin Nippon Sekkei, 547-2 Ashitaka, Numazu-shi, Shizuoka 410-0001, Japan,Telephone: +81 55 924 2801, Telefax: +81 55 924 2803, E-mail: ueno-ma@snsk.jp
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J. Kuwano
J. Kuwano
5
Professor, Geosphere Research Institute, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan, Telephone: +81 48 858 9239, Telefax: +81 48 855 1378,E-mail: jkuwano@mail.saitama-u.ac.jp
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Publisher: Emerald Publishing
Received:
May 10 2008
Revision Received:
January 13 2009
Accepted:
January 20 2009
Online ISSN: 1751-7613
Print ISSN: 1072-6349
© 2009 Thomas Telford Ltd
2009
Geosynthetics International (2009) 16 (4): 286–300.
Article history
Received:
May 10 2008
Revision Received:
January 13 2009
Accepted:
January 20 2009
Citation
Izawa J, Ito H, Saito T, Ueno M, Kuwano J (2009), "Development of rational seismic design method for geogrid-reinforced soil wall combined with fibre-mixed soil-cement and its applications". Geosynthetics International, Vol. 16 No. 4 pp. 286–300, doi: https://doi.org/10.1680/gein.2009.16.4.286
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