Construction method of bridge floor fully-wrapped waterproof coating layer at water outlet

The invention discloses a construction method of a bridge floor fully-wrapped waterproof coating layer at a water outlet. According to the construction method of the bridge floor fully-wrapped waterproof coating layer at the water outlet, through steps of spraying the concrete interface agent, constructing the pipe opening waterproof reinforcing layer, manufacturing the waterproof layer and the like, the fully-wrapped effect of the pipe opening waterproof reinforcing layer is guaranteed through lap joint of the waterproof layer and the pipe opening waterproof reinforcing layer, and the waterproof effect at the water outlet reaches the I level; wind uplift resistance, dislocation resistance and aging resistance can be effectively achieved, the construction method that a traditional waterproof layer is arranged at a bridge floor water outlet or even the whole bridge floor is replaced, the overall load bearing load of the bridge is reduced, the waterproofness and safety of the bridge are improved, and the constr