R. Bathurst, K. Hatami
The paper reports results from numerical experiments that were carried out to investigate the influence of reinforcement stiffness, reinforcement length, and base boundaryconditionontheseismicresponseofanidealized6mhighgeosynthetic-reinforced soilretainingwallconstructedwithaverystiffcontinuousfacingpanel.Thenumericalmod- els were excited at the foundation elevation by a variable-amplitude harmonic motion with a frequency close to the fundamental frequency of the reference structure. The two-dimen- sional, explicit dynamic finite difference program Fast Lagrangian Analysis of Continua (FLAC) was used to carry out the numerical experiments. Numerical results illustrate that the seismic response of the wall is very different when constructed with a base that allows the wall and soil to slide freely and when the wall is constrained to rotate onlyabout thetoe. Parametric analyses were also carried out to investigate the quantitative influence of the damping ratio magnitude used in numerical simulations and the effects of distance and type offar-endtruncatedboundary.Theresponseofthesamewallexcitedbya scaledearthquake recordwasdemonstratedtopreservequalitativefeaturesofwalldisplacementandreinforce- mentloaddistributionasthatgeneratedusingthereferenceharmonicgroundmotionapplied at3Hz.Thelessonslearnedinthisstudyareofvaluetoresearchersusingdynamicnumerical modeling techniques to gain insight into the seismic response of reinforced wall structures.