Patent ID: 7455473

Claim:
A method of installing or exchanging a rubber seal for an expansion joint, the expansion joint comprising finger-type upper plates which are disposed at both ends of opposite deck slabs of a bridge or an elevated road to be engaged with each other, and can be adapted to various expansion joints expandable depending on temperature variation; lower plates installed under the upper plates to fixedly support the upper plates, each of which has a key part closely fixing a rear plate end of a finger part of the upper plate, a horizontal part extending from the key part to support the upper plate in a contact manner, and a vertical part perpendicularly extending from the horizontal part; vertical anchors vertically installed under the horizontal parts of the lower plates to fix the upper plates and the lower plates to an after-cured concrete; horizontal anchors horizontally installed under the lower plates to fix the lower plates to the after-cured concrete; and a rubber seal installed under the upper plates to collect rainwater and foreign substances, the method comprising the steps of: (a) installing guide rails for detachably mounting the rubber seal on both vertical parts of the lower plates; (b) installing a plurality of guide rollers at both ends of the rubber seal in a longitudinal direction thereof using guide roller fixing members to slidably fix the rubber seal to the guide rails; (c) suspending wires from a lower one side of the expansion joint to an opposite side thereof to a sufficient length to pull the rubber seal; (d) fastening one end of the wire to a wire hole of the guide roller fixing member coupled to the rubber seal from a start point of pushing the rubber seal; (e) inserting a portion of the guide roller fastened to the wire into one start point of the guide rail and pulling the wire from the other termination point of the guide rail; and (f) after inserting the rubber seal, cutting the rubber seal to the length of the guide rail or the length of the expansion joint and fixing the rubber seal.