US2441890A - Joint for structural steel columns and girders - Google Patents

Description

J. A. LARKIN May 18, 1948.

' JOINT FOR STRUCTURAL STEEL COLUMNS AND GIRDERS Filed Feb; 15, 1946 Patented May 18, 1948 2 441.

UNITED STATES PATENT UFFICE TOINT. FORSTItUCTURALSTEEL COLUMN AND GIRDERS John A. Larkin, New York, N. Y. Application February 15, 1946, Serial No. 647,691

r 4' Claims. (01. 189-36) 1 v v 2 This invention relates to fabricated or built-up girders therewith. Fillers l6 are laid flatwise steel framework used in the erection of buildings against the portions 15', respectively, on opposite and other structures. sides thereof, and abut the flanges [2. Connect- More particularly, the invention relates to a ing angles l1 abut the fillers l6 and the flanges joint construction between columns and girders or 5 l2. Rivets 18 extend through the angles l1, fillers beams such as disclosed in United States Letters l6 and portions IE to rigidly connect the gussets Patent No. 1,727,293 granted to me. M to the flang I2.

This joint construction includes the use 0 In order to complete the built-up column elongusset plates integrated in a column to provide gated plates l9, which are equal in length to the means for connecting beams or girders to the 10 length of the column section, are laid against the column and sustaining the same. web 10 on opposite sides, respectively. These The principal object of the present invention plates I9 therefore extend over the gussets M is the provision of a structural integrality in since the latter are in the plane of the web I. which use is made of continuous elements which The plates l9 constitutes splices. The plates l9 serve as splice plates, to aid in holding the gusare substantially equal in width to the width of sets in place as parts of the web of a column, the web It] and are substantially equal in thickand to reinforce the formed web throughout the neSs to the thickness of the fillers I6. Connectentire length thereof in proportion to the thicking a es abut the flanges l2 and the sp ic ness of the splice plates and in such ratio, as to plates l at each d Of e eb 0. R v ts 2! increase the bearing capacity of the column, and 20 extend through the contiguous angles l1 and 20 also to add to the value of the columns resistance and flange l2 at each side of the web. Rivets 22 to the torsional or twisting strains to which the exte d through the angles 20, Splice plates and column is subjected. the web plates H). The parts are thus rigidly h nature 1 t invention and t t secured to each other to produce a column secguishing features and advantages will appear 25 tion which is compact with a continuous reinwhen the following specification is read in conce ent O t e Web throughout the length of j n ti ith the accompanying drawing in the column section by reason of the nature and whicharrangement of the splice plates. Also, the gus- Fig. 1 is a sectional perspective of a column secsets are securely integrated in the column section, t t gusset fabricat d in accordance with as well as being reinforced by the splice plates. th present invention, portions being broken A column made of sections constructed in the away to h ce t features manner illustrated and described has increased Fig. 2 is a horizontal sectional view. d bearing a t a d a d d str ngth in re- Fig. 3 is an exploded perspective vie Showing sisting torsional or twisting strains and stresses certain parts of the column section. to which the column is j t d- According to requirements, columns for the I claim: erection of exceptionally high buildings, are each 1. In a structural steel column section of precomposed of sections joined in longitudinal alinedetermined length, web plates vertically spaced ment. It is to this type of column to which the apart, flange plates arranged at right angles to present invention is primarily applied. 40 the web plates, said flange plates having slots The built-up column includes elongated plates therein respectively, the length of each slot equal H] and II. The plates l0 constitute the web of to and alined with the space between the web the column. The plates H are arranged at right plates, a gusset plate positioned between the web angles to the plates l0 and provide flanges l2. plates in the same plane and p jecting th The web plates ID are vertically spaced apart. said slots, splice plates positioned on opposite Each of the plates II has slots 13 therein, equal sides respectively of the web plates and the gusset in size to and in alinement with the space beplate in contact therewith flatwise, each splice tween the web plates ID. A plate l4 extends a plate being coextensive in length with the length crosswise of the plates II in a pair of registering of said column section and each splice plate beslots in the plates H with the adjacent ends of ing the same width as the web plates, connecting the web plates Ii] abutting the plate [4. The angles abutting the flange and splice plates, se-

plate l4 constitutes a gusset in the plane of the curing means extending through said angles, web and forms a part thereof. The opposite end splice plates and web plates, and securing means portions 15 of the gusset l4 project beyond the I extending through said angles and flange plates. plates II for the connection of suitable beams or 2. In a structural steel column section as set 3 forth in claim 1, fillers laid against the projecting end portions of said gusset plate, angles abutting the fillers and flange plates, and securing means extending through said last mentioned angles,

fillers and the projecting portions of said gusset 5 plate.

3. In a structural steel column section, web plates vertically spaced apart, flange plates abutting the web platesat right angles on opposite sides respectively, said flange plates having longi- 10 tudinal slots therein in registry with each other and with the space between said web plates, a

gusset plate positioned between said web plates];

in the same plane and projecting through said slots, splice plates laid against the web platesand gusset plate on opposite sides respectively and in contact therewith fiatwise, each of said splice plates substantially equal in width-to the width of the web plates and extending continuously from one endof the column section to 20 the other end, and means securing the splice plates to the web plates and flangeplates.

h REFERENCES CITED The following references are of record in the iile of this patent:

' Y UNITED STATES PATENTS nmate?" Name Date 1,727,293 Larkin Sept. 3, 1929 1,791,897

Hyde et al. Feb. 10, 1931

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