| 摘要 |
A system for applying tension to and anchoring the end of a prestressing tendon extending from a concrete structure. The system includes a jack for applying tension to the tendon at a first location along the length thereof, anchoring means comprising an anchoring plate and collar means disposed about the tendon and adapted for movement into cooperation with the anchoring plate to grip the tendon located at a point on the tendon between the first location and the concrete structure, and actuator means mounted for movement relative to the jack and the anchoring plate to position the collar means into engagement with the plate and into gripping engagement with the tendon. The actuator means and the collar means incorporate cooperable structure for retaining the collar means against movement relative to the actuator means until the collar means moves into said gripping engagement.
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