Development of rational seismic design method for geogrid-reinforced soil wall combined with fibre-mixed soil-cement and its applications. Issue 4 (1st August 2009)

• Record Type: Journal Article
• Authors: Ito, H.; Kuwano, J.; Ueno, M.; Izawa, J.; Saito, T.
• Is Part Of: Geosynthetics international. Volume 16:Issue 4(2009)
• Page Start: 286
• Page End: 300
• Publication Date: 2009-08-01
• Subjects: KEYWORDS: Geosynthetics, Geogrid, Reinforced soil wall, Fibre-mixed soil-cement, Seismic design, Earthquake; Geosynthetics -- Periodicals; Geosynthetics; Periodicals; 624.1892
• DOI: 10.1680/gein.2009.16.4.286
• Languages: English
• ISSNs: 1072-6349

Abstract

Abstract : 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.