Experimental Evaluation of Seismic Deformation Characteristics of Vertical-Horizontal Reinforced Soil Walls

Curtin University
Publication Type:
Conference Proceeding
ICAGE 2011 - Proceedings of the International Conference on Advances in Geotechnical Engineering, 2011, pp. 797 - 802
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Reinforced soils have been widely used in different construction applications including retaining walls. The performance of retaining walls employing vertical reinforcement in conjunction with horizontal reinforcement is investigated experimentally. This paper presents an experimental study of the seismic performance of vertical-horizontal reinforced soil wall on the simulated earthquake using reducedscale shake table tests. Construction of model retaining walls, instrumentation and results from shaking table tests are described in detail. Two types of reinforced walls, conventional horizontal reinforcement and vertical-horizontal reinforcement, were subjected to large shake of the earthquake motions. The geometry of the model, soil properties and reinforcement characteristics has been kept identical in all tests. The reinforcements used were polymeric geogrids, which were connected to the wrap-facing. Each consecutive horizontal reinforcement layers were connected in tension to each other with the help of vertical connections. The walls were instrumented using transducers to measure wall facing displacement, and accelerations within the soil. The magnitude of lateral displacement under base excitation significantly reduced when vertical reinforcement was included to the wall system.
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