Patent ID: 9347195
Filing Date: 2016-05-24
CPC Classification: E02D

Claim Text:
1. A system for splicing precast pre-stressed concrete piles while maintaining the normal pre-stress strand spacing, size and configuration, comprising a plurality of precast pre-stressed concrete piles, each with a pile upper end having a pile upper end splice plate, and a pile lower end having a pile lower end splice plate interchangeable with the pile upper end splice plate and at least one pre-stressing strand having a strand lower end and an strand upper end, each strand end coated with a bond breaker only for a length sufficient to prevent bonding between the strand and concrete in the pile at each respective end to assure that there is sufficient movement in the strand to be fully engaged by strand chuck wedges, running longitudinally from the pile lower end to the pile upper end, a strand socket at the pile upper end splice plate and pile lower end splice plate each located to receive respectively the strand upper end and the strand lower end, each of said strand sockets having a socket end and hole embedded in the respective pile upper end and pile lower end and the socket terminating and opening at a pile upper or lower end splice plate, the strand lower end and the strand upper end each having a protruding end extending through their respective socket ends and holes, each strand protruding end extending through their respective socket ends and holes in a pre-stressed condition and engaged by strand chuck wedges after re-stressing by post tensioning jack.