| 摘要 |
<p>A pile sleeve (15) comprising a tubular body (10) which has a leading end (14) and a trailing end (16) is provided with a plurality of longitudinally extending, radially projecting fins (12), each of which is configured to define a pocket (13) open towards the trailing end (16) of the sleeve. The sleeve (15) is adapted for insertion into a substrate around a trailing end region of a primary pile (30) after the latter has been driven into the substrate, and the pockets (13) defined by the fins (12) may then be filled with grout or concrete. The fins (12) are preferably of V-shape in cross-section and taper in the direction of the leading end (14) of the sleeve (15).</p> |
