Experimental evaluation of dynamic deformation characteristics of sheet pile retaining walls with fiber reinforced backfill

Fiber reinforced soil behaves as a composite material in which fibers of relatively high tensile strength are embedded in a matrix of soil. Shear stresses in the soil mobilize tensile resistance in the fibers, which in turn imparts greater strength to the soil. In this paper a study on the influence of synthetic fibrous materials in improving the dynamic response characteristics of fine sandy soil is reported. The project aims at converting fibrous carpet waste into a value-added product for soil reinforcement. A series of five shaking table tests using rigid box were carried out on Toyoura sand specimens reinforced with randomly distributed geotextile strips. The dynamic deformation characteristics of the reinforced sand are defined in terms of wall lateral deformation and rotation. The results clearly indicate the effectiveness of fiber reinforcement in improving dynamic properties of fine sand and deformation characteristics of fiber reinforced sheet pile retaining wall during shaking.

[1]  O. Matsuo,et al.  SHAKING TABLE TESTS AND ANALYSES OF GEOSYNTHETIC-REINFORCED SOIL RETAINING WALLS , 1998 .

[2]  Kianoosh Hatami,et al.  Seismic Response Analysis of a Geosynthetic-Reinforced Soil Retaining Wall , 1998 .

[3]  Ahmed Elgamal,et al.  Lotung Downhole Array. II: Evaluation of Soil Nonlinear Properties , 1995 .

[4]  Chandrakant S. Desai,et al.  Numerical Methods in Geotechnical Engineering , 1979 .

[5]  Hossein Ghiassian,et al.  Dynamic Performance of Toyoura Sand Reinforced with Randomly Distributed Carpet Waste Strips , 2008 .

[6]  Balasingam Muhunthan,et al.  Numerical procedures for deformation calculations in the reinforced soil walls , 2006 .

[7]  Spg Madabhushi,et al.  Evaluation of Shear Modulus and Damping in Dynamic Centrifuge Tests , 2005 .

[8]  P. B. Schnabel.  SHAKE-A Computer Program for Earthquake Response Analysis of Horizontally Layered Sites , 1970 .

[9]  Richard J. Bathurst,et al.  Influence of reinforcement parameters on the seismic response of reduced-scale reinforced soil retaining walls , 2007 .

[10]  A. McGown,et al.  Effect of inclusion properties on the behaviour of sand , 1978 .

[11]  Kianoosh Hatami,et al.  Numerical Model for Reinforced Soil Segmental Walls under Surcharge Loading , 2006 .

[12]  T. Al-Refeai,et al.  Behavior of granular soils reinforced with discrete randomly oriented inclusions , 1991 .

[13]  Mourad Zeghal,et al.  Analysis of Site Liquefaction Using Earthquake Records , 1994 .

[14]  Kianoosh Hatami,et al.  Development and verification of a numerical model for the analysis of geosynthetic-reinforced soil segmental walls under working stress conditions , 2005 .

[15]  Richard D. Woods,et al.  Dynamic Response of Sand Reinforced with Randomly Distributed Fibers , 1990 .

[16]  Kianoosh Hatami,et al.  Static Response of Reinforced Soil Retaining Walls with Nonuniform Reinforcement , 2001 .

[17]  Takeshi Sato,et al.  Shaking and Tilt Table Tests of Geosynthetic-Reinforced Soil and Conventional-Type Retaining Walls , 1998 .

[18]  S. K. Ho,et al.  Effect of wall geometry on the behaviour of reinforced soil walls , 1996 .