Post-Tensioned Concrete Reinforcement Anchor Assembly With Radiused Tooth Tips

a technology of radiused tooth tips and post-tensioned concrete, which is applied in the direction of rod connections, manufacturing tools, mechanical equipment, etc., can solve the problems of not being able to withstand significant tensile loads, and achieve the effects of reducing stress on the outer surface of the tendon, improving cyclic loading performance or fatigue performance, and high performan

Inactive Publication Date: 2015-12-03
ACTUANT CORP
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution achieves anchorage efficiency above 95%, approaching 100%, with improved cyclic loading performance, thereby extending the lifespan of concrete structures and maintaining their integrity.

Problems solved by technology

Concrete is capable of withstanding significant compressive loads, however, it is not as capable of withstanding significant tensile loads.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Post-Tensioned Concrete Reinforcement Anchor Assembly With Radiused Tooth Tips
  • Post-Tensioned Concrete Reinforcement Anchor Assembly With Radiused Tooth Tips
  • Post-Tensioned Concrete Reinforcement Anchor Assembly With Radiused Tooth Tips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036]Referring to FIGS. 1 and 2, an anchor 10 and wedge 12 for post-tension reinforcement of concrete that are typical of an anchorage system of the prior art are illustrated. The anchor 10 includes a body with a flange portion 14 that has both a front and rear surface 16, 18. The body also includes a button portion 20 and a nose portion 22. The button portion 20 extends from the rear surface 18 of the flange 14 and the nose portion 22 extends from the front surface 16 of the flange 14. The flange 14 extends laterally in both directions from both the nose portion 22 and the button portion 20. The extension of the flange 14 creates a bearing surface 24 on the rear surface 18 of the flange 14.

[0037]The anchor 10 also includes a bore 26 that extends through the nose portion 22, the flange portion 14, and the button portion 20. As shown in FIG. 1, the bore 26 has a diameter that tapers in the direction from the nose portion 22 to the button portion 20 to receive the wedge 12. In anchor...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A wedge for a concrete post-tension reinforcement anchorage system is shaped such that the compressive force on the tendon after tensioning of the anchorage system is substantially evenly distributed over a length of the outer surface of the tendon that is engaged by the internal surface of the wedge. The external surface of the wedge may have a first section with a first taper angle and a second section with a second taper angle, the second taper angle being larger than the first taper angle. The internal surface of the wedge may have a first section with a first taper angle and a second section with a second taper angle, the second taper angle being greater than the first taper angle. An anchor with a bore with two taper angles and tooth profiles of threading patterns on the internal surface of the wedge are also disclosed.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of allowed U.S. application Ser. No. 14 / 278,667 filed May 15, 2014, which is a continuation-in-part of U.S. application Ser. No. 13 / 420,207 filed Mar. 14, 2012, now U.S. Pat. No. 8,756,885 issued Jun. 24, 2014, which claims the benefit of U.S. Provisional Patent Application No. 61 / 452,447 filed Mar. 14, 2011, the disclosures of which are hereby incorporated by reference for all purposes.STATEMENT OF FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.FIELD OF THE INVENTION[0003]The present invention relates to a system for providing concrete with post-tensioned reinforcement. More specifically, the invention relates to the shape of the internal and external surfaces of the wedge, differing taper angles between the external wedge surface and the bore of the anchor, the use of different thread patterns and tooth profiles on the internal surface of the wedge, and differing taper angles on the bo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(United States)
IPC IPC(8): E04C5/12
CPCY10T403/7054E04C5/122
InventorMATHEWS, THOMAS F.LANDRY, STANLEY A.HOHENSEE, PAUL A.
OwnerACTUANT CORP