| 摘要 |
A prestressing anchor (1) includes a body portion adapted to be rigidly located in concrete or like material and has two generally longitudinally opposed ends and two generally transversely opposed sides. A plurality of openings (2-5) including both an outlet means (3, 5) and an inlet means (2, 4) are at each of the ends arranged in two diagonally opposed co-operative pairs of inlet and outlet means. Each respective co-operative pair of inlet and outlet means provides through access for respective prestressing tendons (30) so that they may be tensioned at a point intermediate their dead anchors. Two structures may be interconnected by arranging the anchor at the junction, so that one structure and its tendon may be completed, and then the second structure completed. When the tendons are in place and tensioned, the whole assembly is embedded in concrete, and to this end, grout inlet (16) is provided. The tendons cross each other in an interleaved array within the anchor. <IMAGE> |
