الفهرس 
BEHAVIOR OF NARROW MECHANICALLY STABILIZED EARTH WALLS UNDER EARTHQUAKE LOADING
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Abstract
The construction of Narrow Mechanically Stabilized Earth Walls (NMSE) of aspect ratio (ratio of reinforcement length, L, to wall height, H) below 0.70 is expanded, recently, in urban areas in limited space. When NMSE walls constructed in active seismically zone, these walls are subjected to seismic ground motion. A Series of 11 shaking table tests are performed on reduced scale NMSE wall model (1/8 of the prototype model) considering the ground motion characteristics, wall aspect ratios, facing rigidity and wall configuration. The modelled walls display that NMSE walls behave as rigid body until yield occurs at input base acceleration ranging for 0.15g to 0.44g and these accelerations is the critical accelerations which corresponding to 0.5 % top wall displacement ratio. Then, excessive deformations are observed. In addition to the traditional shaking table test instrumentations, an advanced approach is adopted using computer vision to determine the wall facing displacement and acceleration amplification of NMSE wall. The aim of using computer vision is to verify its ability to capture the wall displacement and input acceleration amplification, which can be used for more complicated experiments such investigation the reinforcement strains and the strain field