Analysis of the Pull-out Bearing Capacity of New Multi-disc Soil Anchors Based on FLAC3D
The new multi-disc soil anchor uses a new eccentric block rotating soil-squeezing hole expansion device to expand holes multiple times to create a cavity in the underground structure.Steel strands are placed in the pre-drilled holes and cement mortar is injected.Hardening is obtained.In or-der to study the pull-out characteristics of the soil anchor,equal-diameter soil anchors were used as a control group,and FLAC3D software was used to generate the required model.Then the relationship be-tween load and displacement,load and axial force,load and anchor plate bearing load of the model under different tensile forces were analyzed,the relationship between load and side friction is analyzed.The re-sults show that:under the load of the same size and position,the ultimate pull-out bearing capacity of the new multi-disc soil anchor is 100% higher than that of the equal-diameter soil anchor.The verti-cal displacement of the new multi-disc soil anchor is less than Vertical displacement of equal diameter soil anchor.When the new multi-disc soil anchor reaches its ultimate pull-out resistance,the load borne by the anchor disc reaches 36.576% of the total load.
new large-diameter multi-disc earth anchorbearing capacityFLAC3Ddisplace-mentside friction resistance