Method and apparatus for installing a multi-strand anchorage system
First Claim
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1. A method of grouting a multi-strand post-tensioning system comprising the steps of:
- forming an anchor plate having a plurality of tendon-receiving passageways extending from a front side to a back side of said anchor plate and a grout-passing hole extending through said anchor plate from said front side to said back side;
extending tendons through said plurality of tendon-receiving passageways;
attaching a tendon-containing duct to said back side of said anchor plate;
stressing said tendons on said front side of said anchor plate;
affixing a grouting cap onto said front side of said anchor plate so as to cover said tendons on said front side of said anchor plate, said cap having a tubular portion extending into said grout-passing hole; and
passing grout through said tubular portion of said cap and into said hole of said anchor plate.
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Abstract
An anchoring apparatus for a multi-strand anchorage system including an anchor plate having a front side and a back side, a plurality of tendon-receiving passageways formed in the anchor plate, and a hole formed in the anchor plate and extending so as to open on a front side and a back side of the anchor plate. Each of the tendon-receiving passageways opens on the front side and opens on the back side of the anchor plate. Each of the tendon-receiving passageways tapers so as to have a narrow diameter adjacent the back side of the anchor plate and a wide diameter adjacent the front side of the anchor plate. The hole is an unmachined cast hole.
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Citations
7 Claims
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1. A method of grouting a multi-strand post-tensioning system comprising the steps of:
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forming an anchor plate having a plurality of tendon-receiving passageways extending from a front side to a back side of said anchor plate and a grout-passing hole extending through said anchor plate from said front side to said back side; extending tendons through said plurality of tendon-receiving passageways; attaching a tendon-containing duct to said back side of said anchor plate; stressing said tendons on said front side of said anchor plate; affixing a grouting cap onto said front side of said anchor plate so as to cover said tendons on said front side of said anchor plate, said cap having a tubular portion extending into said grout-passing hole; and passing grout through said tubular portion of said cap and into said hole of said anchor plate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification