Centrifuge Model Tests for Investigation of Fiber Reinforced Soil Walls

Document Type : Original Article

Authors

1 Department of Civil Engineering, University of Tokyo, Tokyo, Japan.

2 DepartmentofHydraulicEngineering,TsinghuaUniversity,Beijing,100084,China.

Abstract

The centrifuge model tests were used to evaluate the geotechnical properties of fiber reinforced soil walls. The reducedscale centrifuge models were built and the clay barrier was prepared using kaoline amended silty soil. The unreinforced soil barrier was found to lose their water-tightness and integrity at lower distortion levels compared to fiber reinforced soil barrier. The silty soil used in the centrifuge models, frequently considered as having negligible creep, did not ultimately found to prevent the development of time-dependent deformations. Thus, the significant time-dependent deformations could be occurred in geotechnical structure of fiber reinforced soil walls wall systems. The long-term behavior of reinforced soil walls structures was investigated under stress levels using centrifuge model.

Keywords

Main Subjects


1.  Ling  HI,  Leshchinsky  D,  Chou  NN.  Post-earthquake  investigation  on several geosynthetic-reinforced soil retaining walls and slopes during the Ji-Ji earthquake   of   Taiwan.   Soil   Dynamics   and   Earthquake   Engineering. 2001;21(4):297-313.
2. Sabermahani M, Ghalandarzadeh A, Fakher A. Experimental study on seismic deformation modes of reinforced-soil walls. Geotextiles and Geomembranes. 2009;27(2):121-36.
3. Koseki J, Bathurst R, Guler E, Kuwano J, Maugeri M, editors. Seismic stability of reinforced soil walls. Proc 8th International Conference on Geosynthetics, Yokohama; 2006.
4. Yeo S-S, Hsuan Y. Evaluation of creep behavior of high density polyethylene and polyethylene-terephthalate geogrids. Geotextiles and Geomembranes. 2010;28(5):409-21.
5.  Kongkitkul  W,  Tatsuoka  F.  A  theoretical  framework  to  analyse  the behaviour of polymer geosynthetic reinforcement in temperature-accelerated creep tests. Geosynthetics International. 2007;14(1):23-38.
6. Costa CML, Zornberg JG, de Souza Bueno B, Costa YDJ. Centrifuge evaluation of the time-dependent behavior of geotextile-reinforced soil walls. Geotextiles and Geomembranes. 2016;44(2):188-200.
7. Allen  T,  Bathurst R. Soil reinforcement loads in geosynthetic walls at working stress conditions. Geosynthetics International. 2002;9(5-6):525-66.
8. Ballegeer JP, Wu JT. Intrinsic confined and unconfined load-deformation properties of geotextiles.    Geosynthetic Soil Reinforcement Testing Procedures: ASTM International; 1993.
9. Jones C, Clarke D. The residual strength of geosynthetic reinforcement subjected to accelerated creep testing and simulated seismic events. Geotextiles and Geomembranes. 2007;25(3):155-69.
10. Zornberg JG, Byler BR, Knudsen JW. Creep of geotextiles using time– temperature superposition methods. Journal of geotechnical and geoenvironmental engineering. 2004;130(11):1158-68.
11. Wu J, Helwany S. A performance test for assessment of long-term creep behavior   of   soil-geosynthetic   composites.   Geosynthetics   International.1996;3(1):107-24.
12. Divya P, Viswanadham B, Gourc J. Centrifuge model study on the performance of fiber reinforced clay-based landfill covers subjected to flexural distress. Applied Clay Science. 2017;142:173-84.
13. Li Z, Escoffier S, Kotronis P. Using centrifuge tests data to identify the dynamic soil properties: Application to Fontainebleau sand. Soil Dynamics and Earthquake Engineering. 2013;52:77-87.
14. Jabary R, Madabhushi S. Tuned mass damper effects on the response of multi-storied structures observed in geotechnical centrifuge tests. Soil Dynamics and Earthquake Engineering. 2015;77:373-80.
15. Mirshekari M, Ghayoomi M. Centrifuge tests to assess seismic site response of partially saturated sand layers. Soil Dynamics and Earthquake Engineering. 2017;94:254-65.
16. Shrestha S, Bell J, editors. Creep behavior of geotextiles under sustained loads. Proceedings of the Second International Conference on Geotextiles;1982.
17. Greenwood J, Kempton G, Watts G, Bush D, editors. Twelve year creep tests on geosynthetic reinforcements. Eurogeo 2000: proceedings of the 2nd european geosynthetics conference volume 1: mercer lecture, keynote lectures, geotechnical applications; 2000.
18. Allen T, Bathurst R. Observed long-term performance of geosynthetic walls  and  implications  for  design.  Geosynthetics  International.  2002;9(5-6):567-606.