Connector assembly for intermediate post-tension anchorage system

• US 6,761,002 B1
• Filed: 12/03/2002
• Issued: 07/13/2004
• Est. Priority Date: 12/03/2002
• Status: Active Grant

• Current Assignee: Felix L. Sorkin
• Original Assignee: Felix L. Sorkin
• Inventors: Sorkin, Felix L.
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): EDELL, JOSEPH F
• Application Number:
  US10/308,061
• Time in Patent Office: 588 Days
• Field of Search: 522/236, 522/231.3, 403/368, 403/369, 403/374.1
• US Class Current: 52/223.13
• CPC Class Codes: E04C 5/12 Anchoring devices tools or methods for tensioning in situ E04G21/12
• CPC Class Codes: E04G 21/12 Mounting of reinforcing inserts; Prestressing shell tubes for prestressing members E04C5/10; anchoring means E04C5/12; connections of reinforcing elements and spacers E04C5/16
• CPC Class Codes: Y10T 403/7064 by wedge or cam

Abstract

A post-tension anchor system including a first tendon, a second tendon, a first anchor receiving the first tendon therein, a second anchor receiving the second tendon therein, a coupler extending over the first anchor and secured to the second anchor such that the first tendon extends through a hole in the coupler, and a cover extending over an exterior surface of the coupler so as to be engaged with the second anchor in liquid-tight relationship. The cover is an encapsulation formed in liquid-tight sealing relationship over an exterior surface of the coupler. The second anchor includes a barrel anchor and encapsulated anchor.

Claims

1. A post-tension anchor system comprising:

a first tendon having a sheathed portion and an unsheathed portion;

a second tendon having a sheathed portion and an unsheathed portion;

a first anchor receiving said unsheathed portion of said first tendon therein, said unsheathed portion of said first tendon extending outwardly beyond an end of said first anchor;

a second anchor receiving said unsheathed portion of said second tendon therein, said unsheathed portion of said second tendon extending outwardly beyond an end of said second anchor, said second anchor comprising;

a barrel anchor having a tendon-receiving cavity therein, said unsheathed portion of said second tendon being secured within said cavity of said barrel anchor; and

an encapsulated anchor positioned adjacent an end of said barrel anchor, said second tendon extending through said encapsulated anchor, said encapsulated anchor being encapsulated with a polymeric material;

a coupler extending over said first anchor and secured to said second anchor, said first tendon extending through a hole of said coupler; and

a cover extending over an exterior surface of said coupler.

2. The system of claim 1, said cover being affixed in liquid-tight relationship to the encapsulation of said encapsulated anchor.

3. The system of claim 1, said barrel anchor having threads formed on an exterior surface thereof, said coupler having threads formed on an interior surface thereof, said coupler being threadedly engaged with said barrel anchor.

4. The system of claim 1, said first anchor being a barrel anchor having a tendon-receiving cavity formed therein, said unsheathed portion of said first tendon being secured within said cavity of said barrel anchor.

5. The system of claim 1, said first anchor having a tapered tendon-receiving cavity formed therein, said first tendon having an end of said unsheathed portion secured within said cavity of said first anchor, said tapered tendon-receiving cavity having a wide opening at one end thereof, said second anchor having a tapered tendon-receiving cavity formed therein, said second tendon having an end of said unsheathed portion thereof received within said second anchor, said tapered tendon-receiving cavity of said second anchor having a wide opening at an end thereof adjacent said wide opening of said first anchor.

6. The system of claim 5, said first anchor having a plurality of wedges interposed in interference-fit relationship between said unsheathed portion of said first tendon and a wall of said cavity of said first tendon, said second anchor having a plurality of wedges interposed in interference-fit relationship between said unsheathed portion of second tendon and a wall of said cavity of said second anchor.

7. The system of claim 5, further comprising:

a resilient member interposed between said first anchor and second anchor within said coupler so as to urge said first anchor toward an end of said coupler.

8. A post-tension anchor system comprising:

a first tendon having a sheathed portion and an unsheathed portion;

a second tendon having a sheathed portion and an unsheathed portion;

a first anchor receiving said unsheathed portion of said first tendon therein, said unsheathed portion of said first tendon extending outwardly beyond an end of said first anchor;

a second anchor receiving said unsheathed portion of said second tendon therein, said unsheathed portion of said second tendon extending outwardly beyond an end of said second anchor;

a coupler extending over said first anchor and secured to said second anchor, said first tendon extending through a hole of coupler, said coupler being a tubular member having an open end and a closed end, said hole formed in said closed end, said first anchor slidably received in said coupler so as to abut said closed end, said second anchor extending outwardly of said open end; and

a cover extending over an exterior surface of said coupler.

9. The system of claim 8, said cover being a polymeric encapsulation extending over said coupler, said cover having a portion extending beyond said open end of said coupler, said portion of said cover in liquid-tight sealing relationship with an exterior surface of said second anchor.

10. The system of claim 8, said cover having a tubular portion extending outwardly beyond said closed end of said coupler, said tubular portion being axially aligned with said hole of said closed end.

11. The system of claim 8, further comprising:

a first sealing member affixed to said cover and extending outwardly therefrom and around said first tendon, said first sealing member being in liquid-tight sealing relationship with said sheathed portion of said first tendon; and

a second sealing member affixed to said second anchor and extending outwardly therefrom and around said second tendon, said second sealing member being in liquid-tight sealing relationship with said sheathed portion of said second tendon.

12. A connector for tendons of a post-tension system comprising:

a first anchor having a tendon-receiving cavity formed therein;

a second anchor having a tendon-receiving cavity formed therein;

a coupler extending over said first anchor and secured to said second anchor; and

a cover extending over an exterior surface of said first and second anchors, said second anchor comprising;

a barrel anchor having said tendon-receiving cavity formed therein, said tendon-receiving cavity having a wide opening at end thereof adjacent said first anchor; and

an encapsulated anchor having an interior passageway therein in axial alignment with said tendon-receiving cavity of said barrel anchor, said cover having a portion in liquid-tight sealing relationship with an exterior surface of said encapsulated anchor, said encapsulated anchor being encapsulated with a polymeric material.

13. A connector for tendons of a post-tension system comprising:

a first anchor having a tendon-receiving cavity formed therein;

a second anchor having a tendon-receiving cavity formed therein;

a coupler extending over said first anchor and secured to said second anchor;

a cover extending over an exterior surface of said first and second anchors, said coupler being a tubular member having an open end and a closed end, said closed end having a hole formed therein in axial alignment with said tendon-receiving cavity of said first anchor, said first anchor abutting against a surface of said closed end of said coupler; and

an annular elastomeric member interposed between said first and second anchors, said elastomeric member urging said first anchor against the closed end of said coupler.

14. The system of claim 13, said cover being a polymeric encapsulation extending in liquid-tight relationship over said coupler, said cover having a tubular portion extending outwardly from one end thereof, said tubular portion being in axial alignment with said tendon-receiving cavity of said first anchor.

15. A method of forming an intermediate anchorage of a post-tension anchor system comprising:

encapsulating a coupler with a polymeric encapsulation extending in liquid-tight relationship thereover;

positioning a first anchor within said coupler, said coupler having an open end and a closed end, said closed end having a hole formed therein;

forming a first anchor assembly having a first tendon affixed within a tendon-receiving cavity of said first anchor, said first tendon extending through said hole in said closed end of said coupler;

affixing a second tendon within a tendon-receiving cavity of second anchor; and

securing said coupler to said second anchor such that said first and second tendons are axially aligned in end-to-end relationship, said polymeric encapsulation being in liquid-tight relationship with said second anchor, said second anchor comprising a barrel anchor and encapsulated anchor arranged in end-to-end relationship, said step of affixing comprising affixing an end of said second tendon within said barrel anchor, said step of securing comprising affixing a portion of said polymeric encapsulation over an exterior surface of said encapsulated anchor.

16. The method of claim 15, said step of securing further comprising:

threadedly securing said coupler to an exterior surface of said barrel anchor.

17. A method of forming an intermediate anchorage of a post-tension anchor system comprising:

encapsulating a coupler with a polymeric encapsulation extending in liquid-tight relationship thereover;

positioning a first anchor within said coupler, said coupler having an open end and a closed end, said closed end having a hole formed therein;

forming a first anchor assembly having a first tendon affixed within a tendon-receiving cavity of said first anchor, said first tendon extending through said hole in said closed end of said coupler;

affixing a second tendon within a tendon-receiving cavity of second anchor;

securing said coupler to said second anchor such that said first and second tendons are axially aligned in end-to-end relationship, said polymeric encapsulation being in liquid-tight relationship with said second anchor; and

positioning an annular elastomeric member between said first and second anchors within said coupler so as to resiliently urge said first anchor against said closed end of said coupler.