| 摘要 |
<p>The present invention relates to a leakage prevention device installed in the lower part of a joint unit of an expansion joint apparatus used on bridges, roads, or railroads. The leakage prevention device for a joint unit of an expansion joint apparatus can completely block rainwater flowing from the upper part of the expansion joint apparatus to the joint unit in order to prevent corrosion of the lower part of a bridge, enhance seismic performance, and easily make and construct an expansion joint apparatus at the local site.</p> |
