| 摘要 |
<p>The present invention relates to a bridge drainer which is installed on both sides of a bridge to drain rainwater, cleaning water, etc., accumulated on the bridge to the underside of the bridge. The bridge drainer prevents a phenomenon that the outer surface of the drainer buried in the top plate of the bridge detaches from the contacting concrete surface because of temperature changes, impact, vibration, etc., between the outer surface of the drainer and the contacting concrete surface. Accordingly, the bridge drainer prevents rainwater and cleaning water from permeating into a slit between the outer surface of the drainer and the contacting concrete surface. As a result, the bridge drainer prevents a phenomenon that rainwater flows down the outer surface of the drain tube and corrodes or erodes the underside of the top plate of the bridge, steel beams, and bridge posts. The bridge drainer of the present invention comprises: an external component including the external surface which is roughened to contact the concrete of the top plate (1); a resin layer (39) which coats the roughened external surface of the external component; and sand (40) spread on the coating resin layer (39). Thereby, the bridge drainer strengthens the bonding force between the surface of the external component and the concrete of the top plate (1).</p> |
