Mechanical connection for concrete structures

Patent metadata

Field	Value
Publication number	US-10508434-B2
Application number	US-201816111479-A
Country	US
Kind code	B2
Filing date	Aug 24, 2018
Priority date	Aug 25, 2017
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

A system and method for connecting precast concrete structures includes anchoring a sleeve within a pocket formed in one of the concrete structures, and placing the concrete structures in contact with one another such that the pocket is diposed around a protruding end of a shear connector embedded in the other concrete structure. A bridge is inserted around the protruding end of the shear connector and a fastener is installed onto the protruding end of the shear connector to engage the bridge and urge the bridge in abutting relation with a lip of the sleeve. The pocket is then filled with a grout.

First claim

The invention claimed is:

1. A connection assembly for fastening a first precast concrete member to a second precast concrete member, the first and second precast concrete members being in physical contact with one another, the connection assembly comprising:
a threaded rod protruding from a first face of the first precast concrete member, the first face of the first concrete member contacting the second precast concrete member;
a sleeve having a lateral wall surrounding an opening, the sleeve being integrated into the second precast concrete member such that the opening extends through a thickness of the second precast concrete member, the second precast concrete member being disposed in contact with the first precast concrete member such that the threaded rod extends at least partially through the sleeve;
a lip connected along an inner side of the lateral wall;
a bridge disposed within the opening, the bridge having a body that forms a bore disposed around at least a portion of the threaded rod and ends that abut against the lip; and
a fastener engaged with the threaded rod and positioned to retain the bridge in contact with the lip.

2. The connection assembly of claim 1 , further comprising one or more concrete anchors connected with the lateral wall of the sleeve along an outer side thereof, the one or more concrete anchors being embedded into the second precast concrete member.

3. The connection assembly of claim 2 , wherein each of the one or more concrete anchors has an elongate shape and is connected at one end on the outer side of the lateral wall.

4. The connection assembly of claim 3 , wherein each of the one or more concrete anchors has a head connected an an opposite end thereof.

5. The connection assembly of claim 1 , further comprising a grout material occupying an internal space of the opening.

6. The connection assembly of claim 1 , wherein the lip is connected to the lateral wall and extends around a perimeter of the opening.

7. The connection assembly of claim 6 , wherein the lip is disposed adjacent the first precast concrete member.

8. The connection assembly of claim 1 , wherein the threaded rod is embedded and anchored at one end in the first precast concrete member.

9. The connection assembly of claim 1 , wherein the sleeve has a tubular shape.

10. The connection assembly of claim 1 , wherein the sleeve has a round cross section.

11. The connection assembly of claim 1 , wherein the sleeve has a rectangular cross section.

12. The connection assembly of claim 1 , wherein the body of the bar has an elongate shape that abuts the lip at two locations.

13. The connection assembly of claim 1 , wherein the sleeve, the lip, and the bridge are made of steel.

14. A method for connecting a first precast concrete member with a second precast concrete member, comprising:
placing the first precast concrete member in contact with the second precast concrete member;
providing a threaded protruding from a first face of the first precast concrete member, the first face of the first concrete member contacting the second precast concrete member;
providing a sleeve having a lateral wall surrounding an opening, the sleeve being integrated into the second precast concrete member such that the opening extends through a thickness of the second precast concrete member;
placing the second precast concrete in contact with the first precast concrete member such that the threaded rod extends through the sleeve;
placing a bridge within the opening, the bridge having a body that forms a bore disposed around at least a portion of the threaded rod, and ends that abut against a a lip connected along an inner side of the lateral wall;
engaging the threaded rod with a fastener such that the bridge is retained in contact with the lip.

15. The method of claim 14 , further comprising connecting one or more concrete anchors to an outer side of the lateral wall of the sleeve, and embedding the one or more concrete anchors into the second precast concrete member.

16. The method of claim 14 , further comprising filling an internal space of the opening with a grout material.

17. A method for connecting a concrete slab to a support, comprising:
anchoring a tube around a pocket in the concrete slab;
placing the pocket around a protruding end of a shear connector embedded in an end of the support;
inserting a bridge around the protruding end of the shear connector;
installing a fastener onto the protruding end of the shear connector to engage the bridge and urge the bridge in abutting relation with a lip of the tube; and
filling the pocket in the concrete slab with a grout or flowable concrete material around the bridge.

18. The method of claim 17 , wherein anchoring the tube around the pocket includes connecting anchors on an outer side of the tube, and casting the concrete slab around the tube and anchors to embed the anchors in the concrete slap and allow an interior of the tube to form the pocket.

19. The method of claim 17 , wherein the shear connector is a threaded rod that is embedded in the support, and wherein the fastener is a nut that threadably engages the shear connector.

20. The method of claim 17 , further comprising inserting a second bridge around a protruding end of a second shear connector disposed in the pocket, and fastening the second bridge in abutting relation with the lip.

Assignees

• Nutech Ventures Inc
• Nutech Ventures

Inventors

• Morcous George
• Tawadrous Raed

Classifications

• E04B1/043 Primary

  Connections specially adapted therefor · CPC title

• E04B1/4128 Primary

  receiving adjustable or removal nuts · CPC title

• E04B1/415

  with captive and extendable anchoring parts, e.g. spring-loaded bolts, hanging rings · CPC title