| 摘要 |
<p>A fastening element comprising a plate (1) and a number of cylindrical elements (7), pins, which are driven through apertures (5) in the plate (1) and into the substratum (4), to which the fastening element will be attached. The apertures (5) in the plate (1) extend in different directions and are distributed rotationally symmetrical in the plate. The apertures (5) are arranged in one or more circular, concentric rows. The shortest radius of these concentric rows of apertures is at least equal to the penetration depth into the sublayer (4) of the cylindrical elements (7).</p> |
