2results about How to "Overall stability" patented technology

The present application relates to the field of prefabricated concrete pile production, and specifically discloses a preparation method of a centrifugal reinforced prestressed solid square pile, comprising: mold pretreatment and cage reinforcement assembly, primary high-strength concrete distribution, mold closing and prestress tensioning, five-stage gradient centrifugal forming, residual slurry and impurity discharge, pile core high-strength concrete grouting and densification, and high-pressure steam curing. The present application uses gradient centrifugation to compact the outer layer of the pile body concrete layer by layer and uniformly arrange the aggregate, eliminates the soft interlayer of the pile core by discharging the residual slurry, and then fills the internal voids by secondary grouting of the pile core and low-speed centrifugal compaction, forming a full-face homogeneous structure with dense outer layer and high-strength core. Finally, the high-pressure steam curing strengthens the overall performance. The present application effectively solves the technical defects of uneven cross-section density and high core porosity caused by the traditional vibration process, significantly improves the compressive strength, bending performance and structural stability of the pile body, and is suitable for industrialized mass production.