Abstract. Geocell is an e ective type of geosynthetics for improving the performance of reinforced soil foundations due to provision of lateral con nement for the in ll soil. In this research, in order to study the bearing pressure-settlement response of geocellreinforced sand, a reduced-scale physical model is developed and geocells with various geometrical dimensions (height, pocket size, and width) produced from woven geotextile are used to reinforce sand bed. Strip footing model is then loaded monotonically to ultimate failure level, and the in uence of geocell geometrical properties on the improvement in bearing capacity and settlement of footing is described. The results show that by increasing height and decreasing pocket size of geocell, the bene cial e ect of geocell reinforcement increases substantially. For the highest geocell used in the tests at settlement level of 6%, improvement in bearing capacity and percentage reduction in footing settlement are obtained as 2.1 and 48%, respectively. The optimum width of geocell is determined ve times the foundation width beyond which the improvement e ect is negligible. It is also concluded that substituting a single layer of geocell reinforcement with 2 half-height and 4 quarter-height geocell layers results in 10% and 22% decrease in the ultimate bearing capacity, respectively.

No abstract

No abstract

No abstract