Joints Between Precast Concrete Elements

• US 20140041328A1
• Filed: 08/06/2013
• Published: 02/13/2014
• Est. Priority Date: 08/07/2012
• Status: Abandoned Application

• Current Assignee: Laing O'Rourke PLC (Suffolk Partners Corporation), Laing O'Rourke Services Pty Limited (Suffolk Partners Corporation)
• Original Assignee: Laing O'Rourke PLC (Suffolk Partners Corporation)
• Inventors: Stehle, John Siegfried
• Application Number:
  US13/960,166
• Publication Number:
  US 20140041328A1
• Time in Patent Office: Days
• US Class Current: 52/250
• CPC Class Codes: E01C 11/14 Dowel assembly ; Design or construction of reinforcements in the area of joints coupling devices for prefabricated units E01C5/005; combined with characteristic packings E01C11/08 - E01C11/12; removable holders E01C23/045
• CPC Class Codes: E04B 1/043 Connections specially adapted therefor
• CPC Class Codes: E04B 1/41 Connecting devices specially adapted for embedding in concrete or masonry joist hangers E04B1/2612; shear dowels E04B1/483; spacers other than masonry wall ties for cavity walls E04B2/30, E04B2/44; connectors for reinforcing elements E04C5/16; fastening frames to the border of openings E06B1/56
• CPC Class Codes: E04B 1/483 Shear dowels to be embedded in concrete
• CPC Class Codes: E04B 5/023 Separate connecting devices for prefabricated floor-slabs
• CPC Class Codes: E04B 5/10 with metal beams or girders, e.g. with steel lattice girders E04B5/14 takes precedence
• CPC Class Codes: E04B 5/19 the filling members acting as self-supporting permanent forms E04B5/21 takes precedence
• CPC Class Codes: E04B 5/21 Cross-ribbed floors
• CPC Class Codes: E04C 5/0645 Shear reinforcements, e.g. shearheads for floor slabs

Abstract

A joint between two adjacent faces (14) of concrete elements is formed by overlapping headed bar (16) with transverse studs (22) between the bars.

Claims

1. A longitudinal joint between two precast concrete elements each having headed bars projecting from adjoining faces of the elements to be joined;

the elements being positioned so that their respective headed bars are interleaved and overlap but are not in contact with one another; and

headed studs positioned transversely to a length of the joint and transversely to and between the headed bars, the bars and studs being enclosed in concrete.

2. A joint as claimed in claim 1, wherein the headed studs are double headed studs supported on a rail which rests on the overlapped headed bars.

3. A joint as claimed in claim 1, wherein the headed studs are welded to a beam beneath the joint.

4. A joint as claimed in claim 1 wherein each element edge has a double row of headed bars.

5. A joint as claimed in claim 1, wherein at least one longitudinal bar is positioned along the length of the joint.

6. A joint between two precast concrete elements substantially as herein described with reference to the accompanying drawings.