Numerical Simulation Analysis of Bearing Capacity of a New Type of Large Diameter Multi-disc Earth Anchor
The new large-diameter multi-disc earth anchor is made by using a professional reaming device for multiple reaming to form a plurality of cavities.The steel strand with centering support is placed in the borehole,and cement mortar is poured into the borehole and solidified.In order to study the pull-out characteristics of the anchor,the equal-diameter anchor was taken as the control group,and the ultimate pull-out capacity,vertical displacement,axial force,plate load and side friction of the anchor under different loads were numerically simu-lated by FLAC3D software.The results show that under the same condition,the ultimate pulling capacity of the new large-diameter multi-disc soil anchor is 50%higher than that of the same diameter soil anchor.The vertical displacement of the new large-diameter multi-disc earth anchors decreases by 24.22%compared with that of the same diameter earth anchors when their ultimate pulling capacity is reached.The lateral friction resistance of the new large-diameter multi-disc earth anchor is small and the growth rate is slow.When the ultimate pulling capac-ity is reached,the load sharing of the anchor disc accounts for 32.094%of the total applied load.
new large-diameter multi-disc earth anchorbearing capacityFLAC3Ddisplacementside friction resistance