Serrated beam

Patent metadata

Field	Value
Publication number	US-11725386-B2
Application number	US-202016948580-A
Country	US
Kind code	B2
Filing date	Sep 24, 2020
Priority date	Jan 16, 2020
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A structural member section is provided that may be comprised of horizontal top and bottom flange elements interconnected by one or more vertical web member. The top flange of the member is serrated such that a series of serrations protrude horizontally in at least one direction from a top of the one or more vertical web member or are cut-out from the flange of a rolled shape. In one embodiment, the serrated top flange and at least a portion of the web member are intended to be encased by a horizontal concrete slab or slab-on-deck assembly. The slab material is capable of encasing all exposed surfaces of and curing around each serration to transfer horizontal shear forces between the serrated top flange and the slab material such that the member and slab behave compositely without needing additional reinforcing located within the voids between serrations.

First claim

I claim:

1. A structural load bearing assembly comprising:
a structural member;
a serrated horizontal top flange and a serrated vertical top flange connected to the structural member, said serrated horizontal top flange member comprising a first plurality of serrations arranged in a spaced apart manner on the serrated horizontal top flange member and defining a plurality of voids between adjacent serrations of the first plurality of serrations, and said serrated vertical top flange member comprising a second plurality of serrations arranged in a spaced apart manner on the serrated vertical top flange member and defining a plurality of voids between adjacent serrations of the second plurality of serrations, wherein each of the second plurality of serrations comprises a head portion, and a shaft portion, and said plurality of voids each have a shape that is substantially a mirror image of a shape of each of the second plurality of serrations; and
wherein a width of the head portion measured in a direction parallel to a long axis of said structural member is greater than a width of the shaft portion measured in the direction parallel to the long axis of said structural member, and wherein each of said shaft portions have a first substantially linear side perpendicular to the long axis and a second substantially linear side, and each of said head portions have a first substantially linear side perpendicular to the long axis and a second substantially linear side;
a structural medium defining a floor slab disposed at a top portion of said structural member, wherein said structural medium encases the first plurality of serrations of the serrated horizontal top flange and the second plurality of serrations of the serrated vertical top flange to provide a horizontal shear transfer between the floor slab through the first and second plurality of serrations to the serrated horizontal and vertical top flanges to sufficiently develop a composite action between the structural member and slab.

2. The structural load bearing assembly claim 1 wherein said first plurality of serrations are present over only a portion of the full length of said structural member.

3. The structural load bearing assembly of claim 1 wherein said structural member is braced against horizontal translation by a bracing member.

4. The structural load bearing assembly of claim 3 wherein the bracing member is selected from a group consisting of metal decking and wood decking.

5. The structural load bearing assembly of claim 3 wherein the bracing member is a U-shaped member wherein the legs of the U-shape are spaced apart at a distance that straddles a shaft of the serration and is restrained by a head of the serration.

6. The structural load bearing assembly of claim 1 further comprising at least one vertical web member coupled to said horizontal serrated top flange member, wherein the structural medium is concrete slab, and said horizontal serrated top flange member and a portion of said at least one vertical web member is encased within said concrete slab.

7. The structural load bearing assembly of claim 6 further comprising a continuous strut or a plurality of intermittent struts operably connected to or placed in contact with at least one side of said vertical web member and said continuous strut or a plurality of intermittent struts operably connected to one of a decking or a forming material that are connected to said one or more horizontal bottom flange members.

8. The structural load bearing assembly of claim 1 wherein said first plurality of serrations comprise a first group of serrations on one side of said serrated horizontal top flange member that are staggered with respect to a second group of serrations on the opposite side of said serrated horizontal top flange member.

9. The structural load bearing assembly of claim 1 wherein said first plurality of serrations comprise a first group of serrations on one side of said serrated horizontal top flange member that are aligned with a second group of serrations on the opposite side of said serrated horizontal top flange member in the direction substantially perpendicular to the long axis.

10. The structural load bearing assembly of claim 1 wherein each of the first and second pluralities of serrations comprises a head and a shaft, and wherein a width of the head measured in a direction parallel to a long axis of said structural member is greater than or equal to a width of the shaft measured in the direction parallel to the long axis of said structural member.

11. The structural load bearing assembly of claim 10 wherein said head and said shaft individually or as a unit are of a geometry including straight, sloped, tapered, stepped, curved, rectangular, circular, elliptical, ‘T’ shaped, shaped, ‘Y’ shaped, ‘S’ shaped, bulb-shaped or inclusive of one or more perforations.

12. The structural load bearing assembly of claim 1 further comprising a structural truss or joist comprising a top chord member and a bottom chord member interconnected by a plurality of vertical web members;
said serrated horizontal top flange member is the top chord member and said serrated horizontal top flange member is interconnected to one or more of the plurality of vertical web members; and
each of said plurality of vertical web members are coupled to said bottom chord member.

13. The structural load bearing assembly of claim 12 wherein the structural medium is a concrete slab, and said horizontal serrated top flange member and a portion of said at least one of the plurality of vertical web members is encased within said concrete slab.

14. The structural load bearing assembly of claim 12 wherein each of the first and second pluralities of serrations comprises a head and a shaft, and wherein a width of the head measured in a direction parallel to a long axis of said structural member is greater than or equal to a width of the shaft measured in the direction parallel to the long axis of said structural member.

15. The structural load bearing assembly of claim 1 wherein the serrated vertical top flange extends up above and away from the serrated horizontal top flange.

Assignees

• Simpson Strong Tie Co Inc

Inventors

• Mcmanus Patrick

Classifications

• E04C3/06 Primary

  with substantially solid, i.e. unapertured, web (E04C3/10, E04C3/11 take precedence {honeycomb girders E04C3/083}) · CPC title

• E04B5/40

  with metal form-slabs · CPC title

• E04B2103/02

  of ceramics, concrete or other stone-like material · CPC title

• E04C2003/0439

  the cross-section comprising open parts and hollow parts · CPC title

• E04C2003/0452

  H- or I-shaped · CPC title