| 摘要 |
<p>A coupler device for joining members such as tunnel lining segments has a first part comprising a male member (4) having two cylindrical ends (8), each having a series of grooves (9). A second part (5) includes a tapered recess in which a third part, comprising an expandable collar, is contained, the expandable collar (6)comprises a series of arcuate segments having complementary internal grooves which mate with the grooves (9) on the cylindrical ends (8) of the male member (4).</p> |
