Slab-pile wall pre-embedded connecting sleeve structure and construction method thereof

The invention discloses a sheet-pile wall pre-embedded connecting sleeve structure and a construction method thereof, and relates to the field of pile foundation structures. The pre-embedded connecting sleeve structure of the sheet-pile wall comprises cast-in-place concrete supporting piles arranged along the side wall of a foundation pit, a concrete protection layer connected with the side walls of the cast-in-place concrete supporting piles and a soil retaining plate connected to the side, away from the cast-in-place concrete supporting piles, of the concrete protection layer. Connecting sleeves which are arranged at intervals from top to bottom are pre-buried in each concrete pouring support pile, one end of each connecting sleeve penetrates through the concrete protection layer, the soil retaining plate is connected with joint bars which are inserted into the connecting sleeves respectively, and fine aggregate concrete layers are arranged on the outer walls of the joint bars. According to the slab-pile wa