US3050161A

US3050161A - Square column

Info

Publication number: US3050161A
Application number: US728375A
Authority: US
Inventors: Abraham E Shlager
Original assignee: Individual
Current assignee: Individual
Priority date: 1958-04-14
Filing date: 1958-04-14
Publication date: 1962-08-21
Anticipated expiration: 1979-08-21

Description

Aug. 21, 1962 A. E. SHLAGER SQUARE COLUMN Filed April 14, 1958 INVENTOR.

United States Patent 3,050,161 SQUARE COLUMN Abraham E. Shlager, 15 Thacher St, Brookline, Mass. Filed Apr. 14, 1958, Ser. No. 728,375

4 Claims. (Cl. 189-38) wherever possible has sought to reduce the cross-sectionof load carrying members in order to limit the loss of space and carry more load to enlarge clear span distance and area free column space in factories and high buildings. Any structural member that could occupy a smaller cross-sectional area than conventional columns and carry more load would meet with wide acceptance.

The primary object of my invention is to provide a load carrying column having a smaller cross-sectional area than other members now available for supporting a given load.

Another important object of my invention is to provide a square column having a greater load carrying capacity than other square columns now available having the same cross-section.

-Still another important object of my invention is to provide a square column which enables eccentric loads to be at least partially supported at the center of the column.

To accomplish these and other objects,'the several embodiments of my invention include H-beams which form the column core. Side plates are welded to the edges of the H-beam flanges to present a square cross-section. This section is substantially equal in carrying capacity in both directions of the axis whereas without the side plates the column can carry substantially less on the axis aligned with the web than on the other axis normal to it. Concrete fills the chambers on each side of the web which adds to the carrying capacity of the columns. In a second embodiment of my invention, the concrete is omitted and additional plates are welded on one side to the centers of the side plates and on the other side tothe center of the web of the H-beam. These additional plates provide means for transferring eccentric loads to the center of the column. 7

These and other objects and featurm of my invention along with its incident advantages will be better understood and appreciated from the following detailed description of several embodiments thereof, selected for purposes of illustration and shownin the accompanying drawings, in which:

FIGURE 1 is a cross-sectional view of a square column constructed in accordance with my invention;

FIGURE 2 is a view similar to FIGURE 1 and illustrating the manner in which eccentric loads may be applied to the column;

FIGURE 3 is an elevation view of the column shown in FIGURE 2;

FIGURE 4 is a cross-sectional view of another square column constructed in accordance with my invention;

FIGURE 5 is a cross-sectional view similar to FIGURE 4 but showing the manner in which an eccentric load may be secured to the column; j

FIGURE '6 is an elevation view of the embodiment of my invention shown in FIGURE 5; and

FIGURES 7, s and 9are cross-sectionalviews of conventional columns now available. v

The embodiment of'my'invention shown in FIGURES l-3 includes an"H -beam 10 having a pair of

parallel flanges

12 and 14 interconnected by a web 16. Thisbeam is of conventional design and may be fabricated 60 v t M 44 formed in the

side plates

18 and 28. These members '38 and 40 are normally secured to the web during the cally this fact, wherein 8 inch and 12 inch two angle col- 3,@5,l6l rare-area Au 21, 1 962 in the customary manner, A side plate 18 is welded at 20 and 22 across the beam to the adjacent ends 24 and 26 of the

flanges

12 and 14. A similar side plate 28 is welded at 311 and 32 to the other ends of the flanges '12 and 14. In FIGURE 1, the reader will note that the

plates

18 and 28 along with the

flanges

12 and 14 define the vertical walls of a square column and the web of the H-beam separates the enclosed space into closed

chambers

34 and 36. Each of the chambers is filled with a structural grade of concrete.

Tests have demonstrated that a columnconstructed in accordance with my invention shown in FIGURE 1 has a much greater carrying capacity than the conventional columns shown in FIGURES 79, namely, two-angle concrete filled square columns, concrete filled pipe columns,

and H-section columns, respectively. The American Institute of Steel Construction and the'American Concrete Institute substantiate the claim that my column has a substantially greater capacity than the conventional columns illustrated. The following tables illustrate graphiumns, concrete filled pipe columns and] l i-columns of the type illustrated are compared with applicants column shown in FIGURE 1. 1 Y

EIGHT INCH COLUMN Column, Fig. 1 001-, 001 Col; umn, Height, feet um, um, Fig. 9,

- x-x y-y Fig. 7 Fig. 8 y y Axis Axis. Axis Kips Kips Kips Kips Not only is it clear from an inspection of the tables that my column has a much greater carrying capacity than conventional columns of equivalent size now available, but further it is clear that to support a given load, a column constructed in accordance with with my invention may have a much smaller cross-section than conventional columns. For example, it will be noted that an ,j eight inch-ten feet high column constructed in accordance with my invention has the same carrying capacity as a twelve inch-ten feet high column of the type shown in FIGURE 7. V

' "It; FIGURES 2 and ,3 Ihave shown the mama. in

which an eccentric load may be carried by the column.

In those figures, a pair of

load carrying members

38 and 40 are welded to the web 16 and extend through openings fabrication of the column. After welding the members 'to the 'web, the

side plates

18 and 28 are placed against the edges of the flanges of theibeam byinserting me enbers through the preformed slots. Thereafter, the'various joints are 'welded and additional welding is usedto secure the side plates to the members.

(a 1 to allow the eccentric loads (not shown) which are later tobe connected to the members 3 8 and 40 to be aligned with that axis. Thus, the loads Would be secured to the members 38 and 4th on their left side as viewed in FIG- URE 2. W

. The reader will immediately recognize that the

members

38 and 40 allow these eccentric loads to be transferred to the center of the column. The bottom of the slots 44 through which the

members

38 and 40 extend serve as fulcrurns for the members, and the eccentric loads are transferred as an upwardly directed force on the concrete and the web of the H-beam.

In the embodiment of my invention shownin FIG- URES 4 6, the concrete filling the chambers 84 and 36 is replaced by additional plates 50 which are secured to the center of each face of the web 52 of the H-beam 54 and the centers of the side plates 56 and '58. The additional plates 50 preferably extend throughoutthe height of the column. Thus, as shown in FIGURE 4, the square column consists of an Hbeam 54 having a web .and

flanges 60, plates 50 which are secured to the center of each face of the web 52 and, are disposed parallelto the 'flanges60, and

side plates

56 and 58 which are secured to the ends of the flanges 66 and the plates 50. The

' additionalplates 50 may be welded to the Web SZ by The 7

side plates

56 and 58 are welded to the ends of theflanges continuous beads at the joints as suggested at 62.

60 as suggested at 64. To weld the

side plates

56 and 58 to the outer ends of the additional plates 50, slots 66.

are formed intermittently along the centre line of the I 'plates 56 and '58 adjacent the location Where each abuts against the plate 50. Plug Welds may be employed to fill the'slots66 to secure the plates together.

A number of advantages are derived from a square column constructed in the manner shown in FIGURE Particularly they are well suited to support eccentric loads. In FIGURES and 6 I have. illustratedthe mannet in which eccentric loads maybe secured to the columns to best advantage. It will beznofted iii those figures that elongated slots 70 are cut in the

side plates

56 and 58 immediately adjacent the edges of the plates SQLand are adapted to receive load bearing connectingmembers 72.;

1 cr-um for the member '72 and'the load is transferred by tained' within a given perimeter by the use of the types of columns disclosed herein.

Having described in detail several embodiments of my invention, numerous modifications will suggest themselves to those skilled in the art. Therefore, I do not intend to limit the breadth of my invention to those embodiments illustrated and described. Rather, it is my intention that the breadth of my invention b determined by the appended claims and their equivalents. What I claim as new and desire to secure by Letters Patent of the United States is:

l. A vertical column comprising a beam having a pair of flanges'integrally formed with and interconnected by a Web, said flanges and web being disposed in a vertical plane, a pair of vertically oriented plates each parallel to the web and substantially the same width and height as the web, said plates being welded along their edges to the sides of the flanges, means-interconnecting the web and the plates, said means being distinct irom the flanges and being substantially equal in length rto-the plates, and eccentric load bearing members extending through the plates and secured to the means, said load bearing members being displaced from the vertical center lines or" .the plates.

2. A vertical column comprising a beam having parallel flanges integrally formed with a web,.said flanges and web being disposed in vertical planes, a plate parallel .being disposed face to face with the second plate.

3. A vertical column comprising a beam having a pair of parallel flanges integrally formed with a web, plates substantially the same width and height as the web and having theiredges secured to the edges of the flanges, said plates and flanges forminga rectangle in horizontal 1 cross-section, additional plates disposed parallel to the flanges andwelded to-the mid-portions of the web, slots formed in the first named plates opposite the outer edges of the additional plates, plugwelds. filling the slots and securing the additional plates to the first named plates,

[and eccentricload bearing members extending through the first-named plates and parallel to the additional plates,

,the member72 and the plate so to the-web 52 or the 1-1- beam. The load applied to the end of the member 72 thus is transferred to the web 52 as a force directed up- .wardly in'a vertical direction along the web. "The transferred'force supplements the load carrying capacity. of

the column. Unlike any of the prior 'art devices heretofore known, my square column shown in FIGURES 4-6 provides means for transferring eccentric loads to the center of the column. Moreover, loads transferred in this manner actually increase the load carrying capacity of the column by the transferred upwardly directed force.

;In the calculations'set forth above, this force has been 7 ignored.

J Just asthe column shown in FIGURES j13, the column of the. secondembodiment of my invention has a.

much greater carrying capacity than the concrete filled pipebolumns or squarecolumns presently available. As 7 .a res l1lt,.to support a given load, a column of much, "smaller cross section isrequi'red.

I have" suggested-in the introduction the importance and means connecting the load bearing 'members face to 7 face with the additional plates.

4. A vertical column comprising a beam having a pair of flanges integrally formed with and interconnected. by :aweb, saidflanges andweb being disposed in vertical planes, a pair of vertically oriented plates each parallel to the web and substantially the same width and height as the web, said plates being Welded along their edges to the side edges of the flanges, the plates, flanges and of reducingithe cross-sectional areas of'rnernbers of the 7 class or any invention. plna m-ajor piece of construction such aas 'a large multi-story oflice building, .literally thousands {of additional cubic feet of space may be ob- Web forming two vertically elongated cavities of rec- I tangular horizontal .cross section, and eccentric load carrying memberhaving one end secured to the web and ex- References Cited in the tile ofthis patent: V V uNrr n STATES PATENTS 120,418

{Cremin u Oct. 31, 1871 1,662,767. Wait Mar. 13, 1928 1,858,918 De Vou May 17, 1932 2,074,320 Bauer 23, 1937 2,195,327 Dean Mar. 26, 1940 2,624,429; Saxe Ian. 1953 1 Donahue May 13, 1958