关键词：加固砂土地基；合成材料；钢筋
摘 要：This research investigates the behavior of a geosynthetic reinforced sandy soil foundation using laboratory model footing tests. The model footings were steel plates with dimensions of 152 mm × 152 mm. The parameters investigated in this study included top layer spacing, number of reinforcement layers, vertical spacing between layers, tensile modulus and type of reinforcement, and embedment depth. The test results showed that the inclusion of reinforcement can appreciably improve the soil's bearing capacity. Higher tensile modulus geosynthetics performed better than others; and that sand reinforced by the composite of geogrid and geotextile performed better than those reinforced by geogrid or geotextile alone. The test results also showed that the reinforcement configuration/layout has a very significant effect on the bearing capacity of reinforced foundation. The results of the model footing tests were compared with the analytical solution developed by the authors in a previous study. The analytical solution gave a good predication of the experimental results of footing on geosynthetic reinforced sand.