Experimental and Theoretical Research on the Bearing Mechanism of Group Anchors in Sand

To investigate the bearing mechanism and efficiency of group anchors in sand, upward pulling tests model were carried out for different conditions sand density, anchor burial depth ratio, spacing. The results show that load-displacement relationships is similar to single anchors, both being nonlinear same relative density embedment ratio. load-carrying capacity not a simple superposition capacities two but has clear effect, depending on load carrying increases with spacing up limiting critical value. was qualitatively analyzed quantitatively characterized using strain field shear stress obtained through digital image correlation. Adopting test data theoretical derivation, equation proposed relationship between spacing, characterized. Theory predicting configurations. Comparisons developed experimental reported literature good agreement.