1results about How to "Overcome cohesion" patented technology

This application belongs to the field of precast bamboo pile structures and discloses a sleeve-type precast bamboo pile structure, including a central bamboo pile and branch bamboo piles. The central bamboo pile is vertically inserted into the soil to bear vertical loads; the branch bamboo piles are inserted into the soil at a predetermined angle, with the lower end embedded and connected to the central bamboo pile, and the upper end extending outward in a direction away from the central axis of the central bamboo pile, thus forming a spatial force-bearing system. The inclined branch bamboo piles are equivalent to setting rigid barbs on the central bamboo pile in terms of mechanical transmission, and work together to create an "inverted cone soil locking" effect. When the pile is subjected to an upward pull force, the pressure exerted by each branch bamboo pile on the soil above and around it forces the pile foundation area to form an inverted cone-shaped soil plug or soil compression zone. Based on this mechanical mechanism, to pull out the pile, the self-weight and cohesion of the inverted cone-shaped soil must first be overcome, thereby significantly consuming the pull-out force and greatly improving the pull-out bearing capacity of the pile foundation.