Reinforcing structure of transition platform between side slopes under muddy geological conditions

The invention relates to the field of soil reinforcement and foundation pit supporting in foundation pit engineering, and discloses a reinforcing structure of a transition platform between side slopes under muddy geological conditions. The reinforcing structure comprises a first hanging net sprayed concrete protection slope and a protective barrier arranged on the upper end face of the first hanging net sprayed concrete protection slope, a reinforced concrete plate is arranged at the lower end of the first hanging net sprayed concrete protection slope, and reinforcing pieces are fixedly arranged at the lower end of the reinforced concrete plate and sequentially inserted into a soil filling layer, a soft soil layer and an old soil layer; the reinforcing pieces comprise stirring reinforcing pieces and steel pipes inserted into the stirring reinforcing pieces; and a second hanging net sprayed concrete protection slope is arranged at one end of the reinforced concrete plate and is obliquely laid on the reinforcin