The utility model discloses a reinforcement protection layer cushion that is used for bridge web to be under construction fast, including the main member, assist the component, the locating pin, firstclearing hole, the second clearing hole, the main member is for having U -shaped open -ended cylindrical test piece, the main member includes first component subtotal second component part, first component part is provided with first wave faying face in the line of demarcation, it is the semi -cylindrical test piece to assist the component, assist the component and set second wave faying face toalong the side of diametric(al), assist the component setting on the second component part of main member, the main member agrees with through first wave faying face and second wave faying face with the assistance component each other, the locating pin passes first clearing hole and second clearing hole, with fixed main member and assistance component. The utility model provides a technical schemematerial is easy, and the non -staining environment sets up ingeniously, compares with penetrating from reinforcing bar top or end in the past, has practiced thrift the engineering time greatly, andit is very convenient that the operation is got up, does benefit to and change the construction fast.