36results about How to "Reduce structure cost" patented technology

This invention discloses a construction method for a buckling-restrained prestressed anti-buoyancy anchor and the anti-buoyancy anchor itself. The method includes: inserting a buckling-restrained precast pipe into the ground along a first direction, penetrating the upper soft soil layer and entering a lower, stronger soil layer for 1-2 meters; using the hollow cavity of the buckling-restrained precast pipe as a guide, drilling a hole in the hollow cavity and continuing drilling into the underlying soil; cleaning the drilled hole and the hollow cavity of the pipe; placing the reinforcing bar of the prestressed anchor into the drilled hole; positioning it; and pouring anchor grout to the top of the buckling-restrained precast pipe; tensioning and locking the prestressed anchor to anchor it within the foundation slab of the underground structure. This invention uses a precast outer tube to constrain the prestressed anchor rod bearing the tension force in the core, allowing the anchor rod to complete the entire tensioning and locking process without compressive buckling. The anchor head is then anchored into the base slab of the underground structure, thus completely solving the problem of compressive buckling failure of prestressed anti-buoyancy anchor rods on soft soil foundations during tensioning. During the design phase, there is no need to significantly reduce the pull-out bearing capacity of the anchor rod, thus avoiding a substantial increase in the number of anchor rods or a change to an anti-buoyancy scheme entirely composed of reinforced concrete cast-in-place piles. Therefore, it can effectively reduce the structural cost of such projects.