Prefabricated concrete slab wet joint structure with supporting plate

The utility model relates to a precast concrete slab wet joint structure with a supporting plate, which comprises a precast concrete slab, wet joint cast-in-place concrete and U-shaped steel bars, the two ends of the precast concrete slab extend out of the U-shaped steel bars, the wet joint supporting plate is formed at one end of the precast concrete slab, and the other end of the precast concrete slab is a flush end face. When the two prefabricated concrete slabs of the adjacent sections are spliced, the wet joint supporting plate of one prefabricated concrete slab is in butt joint with the flush end face of the other prefabricated concrete slab, the wet joint cast-in-place concrete is poured between the two prefabricated concrete slabs of the two adjacent sections, and the U-shaped steel bars are poured in the wet joint cast-in-place concrete. The bottom of the wet joint cast-in-place concrete is supported by a wet joint supporting plate. According to the utility model, the bottom-die-free rapid pouring of