Building engineering bridge water drainage pipeline structure

The utility model relates to an architectural engineering technology field especially relates to a building engineering bridge water drainage pipeline structure, include: layer, waterproof layer, concrete layer, water drainage tank, filter screen, drain pipe are laid to water -drain mast, lateral conduit, pipe clamp, three -way pipe, bridge, vertical duct, pier stud, pitch, the top side of bridgeis provided with concrete layer, and concrete layer is connected with the bridge through casting method, concrete layer's top side is provided with the waterproof layer, and the waterproof layer is connected with concrete layer through the bonding mode, the top of waterproof layer side is provided with pitch and lays the layer, and pitch is laid the layer and is connected with the waterproof layerthrough the pressfitting mode, water drainage tank has been seted up to the both sides of bridge, be provided with the water -drain mast in the water drainage tank, and the water -drain mast is connected with the bridge throu