Intermediate anchorage system utilizing splice chuck

• US 6,151,850 A
• Filed: 04/26/1999
• Issued: 11/28/2000
• Est. Priority Date: 04/26/1999
• Status: Expired due to Term

• Current Assignee: Felix L. Sorkin
• Original Assignee: Felix L. Sorkin
• Inventors: Sorkin, Felix L.
• Primary Examiner(s): Stephan, Beth A.
• Assistant Examiner(s): Glessner, Brian E.
• Application Number:
  US09/299,258
• Time in Patent Office: 582 Days
• Field of Search: 52/223.1, 52/223.6, 52/223.13, 52/223.14, 52/745.21, 52/745.05, 52/745.19, 52/742.14, 52/583.1, 52/726.1
• US Class Current: 52/223.13
• CPC Class Codes: E04C 5/08 Members specially adapted to be used in prestressed constructions production of reinforced objects in general B28B23/00; prestressed structures produced in situ E04G21/12
• CPC Class Codes: E04C 5/122 the tensile members are anchored by wedge-action
• CPC Class Codes: E04C 5/165 Coaxial connection by means of sleeves
• 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

Abstract

A post-tension anchor system having a first tendon with a sheathed portion and an unsheathed portion, a second tendon with a sheathed portion and an unsheathed portion, an anchor receiving the first tendon therein so as to have the unsheathed portion of the first tendon extending outwardly from one end of the anchor, a splice chuck receiving the unsheathed portion of the first tendon at one end thereof and receiving the unsheathed portion of the second tendon at an opposite end thereof, and a cover extending over the splice chuck so as to have one end extending in liquid-tight relationship with the sheathed portion of the second tendon. The cover also includes a cap member formed at an opposite end which is engaged within the cap-receiving section of the encapsulation of the anchor. The cover includes a polymeric section extending around a portion of the body of the splice chuck and the opposite end of the splice chuck and an elastomeric portion extending around another portion of the body and the other end of the splice chuck. The elastomeric portion overlaps an end of the polymeric portion in liquid-tight relationship therewith.

Claims

1. A post-tension anchor system comprising:

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

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

an anchor receiving said first tendon therein, said first tendon having said unsheathed portion extending outwardly from one end of said anchor said anchor having an encapsulation extending thereover, said encapsulation having a cap-receiving section at one end thereof;

a splice chuck receiving said unsheathed portion of said first tendon at one end thereof and receiving said unsheathed portion of said second tendon at an opposite end thereof; and

a cover extending over said splice chuck, said cover having one end extending in liquid-tight relationship with said sheathed portion of said second tendon, said cover having an opposite end engaged with said cap-receiving section in liquid-tight relationship therewith.

2. The system of claim 1, said cover having a cap member formed at said opposite end, said cap member engaged with said cap-receiving section of said encapsulation.

3. The system of claim 2, said cap member having a neck section extending therefrom, said cap member and said neck section extending over said unsheathed portion of said first tendon.

9. The system of claim 1, said cover having an opposite end in liquid-tight relationship with said sheathed portion of said first tendon.

4. A post-tension anchor system comprising:

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

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

an anchor receiving said first tendon therein said first tendon having said unsheathed portion extending outwardly from one end of said anchor;

a splice chuck receiving said unsheathed portion of said first tendon at one end thereof and receiving said unsheathed portion of said second tendon at an opposite end thereof; and

a cover extending over said splice chuck said cover having one end extending in liquid-tight relationship with said sheathed portion of said second tendon said cover comprising;

a polymeric portion extending around a portion of the body of said splice chuck and said opposite end of said splice chuck and extending outwardly therefrom; and

an elastomeric portion extending around another portion of said body and said one end of said splice chuck, said elastomeric portion overlapping an end of said polymeric portion.

5. The system of claim 4, said elastomeric portion having a narrow end extending around said sheathed portion of said second tendon.

6. The system of claim 4, said elastomeric portion overlapping said polymeric portion in liquid-tight relationship.

7. The system of claim 4, further comprising:

a grease interposed between an exterior of said splice chuck and an interior of said polymeric portion and said elastomeric portion.

8. A post-tension anchor system comprising:

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

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

an anchor receiving said first tendon therein said first tendon having said unsheathed portion extending outwardly from one end of said anchor;

a splice chuck receiving said unsheathed portion of said first tendon at one end thereof and receiving said unsheathed portion of said second tendon at an opposite end thereof; and

a cover extending over said splice chuck said cover having one end extending in liquid-tight relationship with said sheathed portion of said second tendon said cover comprising;

a first elastomeric portion extending around a portion of a body of said splice chuck and said opposite end of said splice chuck and outwardly therefrom; and

a second elastomeric portion extending around another portion of said body and said one end of said splice chuck, said second elastomeric portion overlapping an end of said first elastomeric portion.

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

a splice chuck having a first end adapted to receive an unsheathed portion of a tendon therein and a second end adapted to receive an unsheathed portion of another tendon therein; and

a cover extending over said splice chuck, said cover having one end extending outwardly of said splice chuck and having a narrow diameter portion adapted for liquid-tight engagement with a sheathed portion of one of the tendons, said cover having a cap member formed at an opposite end of said splice chuck, said cap member adapted for engagement within a cap-receiving section of an anchor.

13. The connector of claim 10, said cover having a narrow diameter neck portion extending to said cap, said cap having a thread portion adapted for threaded receipt within an anchor.

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

a splice chuck having a first end adapted to receive an unsheathed portion of a tendon therein and a second end adapted to receive an unsheathed portion of another tendon therein; and

a cover extending over said splice chuck, said cover having one end extending outwardly of said splice chuck and having a narrow diameter portion adapted for liquid-tight engagement with a sheathed portion of one of the tendons, said cover comprising;

a polymeric portion extending around a portion of a body of said splice chuck and an opposite end of said splice chuck and extending outwardly therefrom; and

an elastomeric portion extending around another portion of said body and said one end of said splice chuck, said elastomeric portion overlapping an end of said polymeric portion in liquid-tight relationship therewith.

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

a splice chuck having a first end adapted to receive an unsheathed portion of a tendon therein and a second end adapted to receive an unsheathed portion of another tendon therein; and

a cover extending over said splice chuck, said cover having one end extending outwardly of said splice chuck and having a narrow diameter portion adapted for liquid-tight engagement with a sheathed portion of one of the tendons, said cover comprising;

a first elastomeric portion extending around a portion of a body of said splice chuck and around an opposite end of said splice chuck and extending outwardly therefrom; and

a second elastomeric portion extending around another portion of said body and said one end of said splice chuck, said first elastomeric portion overlapping an end of said second elastomeric portion in liquid-tight engagement therewith.

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

extending a tendon with one end of said tendon affixed to a first anchor and another end affixed to a second anchor;

pouring concrete over said tendon;

solidifying said concrete around said tendon;

tensioning said tendon such that an unsheathed portion of said tendon extends outwardly of said second anchor;

affixing a splice chuck to said unsheathed portion of said tendon in liquid-tight relationship therewith; and

affixing another tendon into said splice chuck such that said another tendon extends outwardly from said splice chuck in liquid-tight relationship therewith.

15. The method of claim 14, further comprising:

affixing a cover over said splice chuck such that one end of said cover extends in liquid-tight relationship with a sheathed portion of another tendon.

16. The method of claim 15, further comprising:

forming said cover with a connector section at another end of said cover; and

engaging said connector section with said second anchor such that said second anchor, said connector section and said splice chuck extend over said unsheathed portion of said tendon.

17. The method of claim 14, further comprising:

affixing a third anchor onto an opposite end of said another tendon from said splice chuck;

pouring concrete over said splice chuck and said another tendon;

solidifying the concrete poured over said splice chuck and said another tendon; and

tensioning said another tendon such that an unsheathed portion of said another tendon extends outwardly of said third anchor on an end opposite said splice chuck.

18. The method of claim 14, further comprising:

placing a splice chuck within a polymeric portion of said cover, said polymeric portion having an opening at one end; and

extending an elastomeric portion in overlapping liquid-tight relationship to said polymeric portion and over said splice chuck, said elastomeric portion having an opening at an opposite end of said splice chuck.