| 摘要 |
1364499 Clamps; prestressed concrete IBIS NEDERLAND NV 17 Dec 1971 [24 Dec 1970] 58838/71 Headings E1W and E2B A bundle 6 of reinforcing wires for concrete is anchored in a tapered bore 3 of a block 1 by driving a wedge 4 in the bore, one or more sliding pieces 7 being disposed between the bore wall and the wires so that as the wedge is driven in the sliding piece or pieces also move. In the embodiment shown a sliding piece 7 is used for each bundle 6 and a groove 8 locates each bundle, the groove being roughened by scratching. grooves, teeth or ridges or by the application of friction increasing granules to the sliding pieces. Connecting rings may be provided to connect the sliding pieces. In an alternative embodiment a single sliding piece is provided for all the bundles. |
