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Sheathing-retaining wedge assembly for use with a post-tension anchorage system

  • US 7,856,774 B1
  • Filed: 09/25/2007
  • Issued: 12/28/2010
  • Est. Priority Date: 09/25/2007
  • Status: Active Grant
First Claim
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1. A sheathing-retaining wedge assembly for use with a post-tension anchorage system, the wedge assembly comprising:

  • a first wedge having a tendon-retaining portion and a sheathing-retaining portion, said tendon-retaining portion having a channel extending longitudinally therealong, said channel suitable for retaining the tendon therein, said tendon-retaining portion having a semi-circular cross-section, said tendon-retaining portion having a tapering outer surface with a wide end at one end of said wedge and a narrow end spaced away from said one end of said first wedge, said sheathing-retaining portion extending outwardly from said narrow end of said tendon-retaining portion of said first wedge; and

    a second wedge having a tendon-retaining portion and a sheathing-retaining portion, said tendon-retaining portion of said second wedge having a channel extending longitudinally therealong, said channel of said tendon-retaining portion of said second wedge suitable for retaining the tendon therein, said tendon-retaining portion of said second wedge having a semi-circular cross section, said tendon-retaining portion of said second wedge having a tapering outer surface with a wide end at one end of said second wedge and a narrow end spaced away from said one end of said second wedge, said sheathing-retaining portion of said second wedge extending outwardly from said narrow end of said tendon-retaining portion of said second wedge, said second wedge having a shape symmetrical with said first wedge;

    an anchor body having a cavity formed therein, said cavity having a tapered portion with a wide end at one end of said anchor body and a narrow end interior of said cavity, said cavity having a passageway extending from said narrow end to an opposite end of said anchor body; and

    a tendon extending through said cavity of said anchor body, said tendon having a sheathed portion and an unsheathed portion, said sheathed portion extending into said passageway, said sheathing-retaining portions of said first and second wedges engaged with said sheathed portion of said tendon, said unsheathed portion of said tendon engaged with said tendon-retaining portions of said first and second wedges.

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