US2424371A

US2424371A - Multistorey building construction

Info

Publication number: US2424371A
Application number: US533340A
Authority: US
Inventors: Scott Kenneth Myers; Abisch Osias
Original assignee: Head Wrightson and Co Ltd
Current assignee: Head Wrightson and Co Ltd
Priority date: 1943-05-28
Filing date: 1944-04-29
Publication date: 1947-07-22
Anticipated expiration: 1964-07-22

Description

y 2 1947. K. Mfsco'r'r ErAL 2,424,371

I MULTISTOREY BUILDING CONSTRUCTION Filed April 29, 1944 r 3 Sheets-Sheet l July 22, 1947. K. M. SCOTT ETAL 2,424,371

MULTISTOREY' BUILDI NG CONSTRUCTiON Filed April 29, 1944 s Sheets-Sheet 2 July 22, 1947. SCOTT L 2,424,371

. MULTISTOREY BUILDING CONSTRUCTION Filed April 29, 1944 5 Sheets-Sheet 3 Patented July 22, 1947 UNITED STATES {TENT OFFICE Kenneth Myers Scott,

Osias Abisch, Londo Head, Wrightson & Co

Thornaby on Tees, and

aby on Tees, England Application April 29, 1944, Serial No. 533,340 In Great Britain May 28, 1943 This invention relates to improvements in steel frame structures for multi-storey buildings whether of the single or multi-bay type (i. e. with verticals at the ends only of the span of the frame or with verticals within the span of the frame).

The main object of this invention is to provide such an arrangement of multi-storey steel frame structure as will simplify the production and reduce the amount of steel necessary to satisfy safety regulations and will consequently cheapen building costs.

According to one feature of this invention, the vertical and horizontal structural members (i. e. stanchions and beams) are connected by preformed components which are interposed in the run of the verticals and horizontals i. e. the verticals are formed in sections which, together with the horizontals terminate at the component and are rigidly connected to it and by it to each other.

Usually the components would consist each of a vertical part to unit the adjacent ends of the sections of the verticals (or stanchions) above and below it and a horizontal part (consisting of one or more limbs) which unite'the horizontal (or beam) or each horizontal when more than one is concerned; thus the verticals and horizontals are rigidly united through the component. The various .components of a structure can be designed individually to absorb the strains at their various locations and the verticals, being interrupted, may also be shaped and dimensioned differently according to their individual loadmg.

Preferably the verticals or stanchions of the frame of a steel structure have aconstant depth through the structure (.i. e. a constant dimension between'the inner and outer faces as seen in cross section) and the Varying strength required for varying loading conditions is afforded by varying the thickness of the section and/or by varying the width of the flange.

The invention is illustrated in the accompanying drawings in which Figure 1 is an elevation of part of a steel frame structure and Figures 2-6 are'views to a larger scale of the components according to this invention. Figure 2 is a side elevation of a component; Figure '3 a sectional .plan on the line III-III, Figure 2; Fig

4 Claims- (Cl. 18936) England, assignors to mpany, Limited, Thornure 4 a transverse section on the line IV-IV, Figure 2; Figure 5 a transverse section on the line V-V, Figure 2; andFigure 6a-transverse section on the line VI--VI, Figure 2.

Referring firstly to Figure 1, the steel frame comprises as is usual'verticals- (or stanchion elements) l rising from supporting feet 2 and horizontals (or beam elements) 3; the invention is of especial valuein providing in such a steel frame a large floor area devoid of intermediate supporting pillars (i. e. what is known as a single bay construction) although the invention is also applicable to constructions where intermediate pillars are employed (i. e. providing a multi-- bay construction).

In carrying out this invention the verticals are formedin sections extending between'floors and specially pre-formed components are'provided to afiordthe connection at the junction of the verticals and horizontals; these components are indicated-generally by the reference C and will now. be described in detail with reference to the remaining figures of the drawings.

Generally speaking, each component consists of a vertical. limb Cv to receive and be secured to the adjacent ends of the in-line verticals and at least one horizontal limb Ch to receive and be secured to one end of a horizontal the otherend being carried by thehorizontal limb CH of an opposed component C.

The components may be forme'diinany convenient manner but preferably would be prefabricated and the drawings illustrate prefabricated components; thus the horizontal limb CH is built up to form an I-section from

plates

4, 5, 6, welded to provide the web and flanges.

Transverse stiffener plates It and I2 abut against and are welded to each side of the web tend the inner faces of the

flanges

5 and 6. These plates l8 and I2 aifordthe means of transmitting the vertical shears. In addition plate H0 is in alignment with the flange 9 of the stanchion, so permitting direct transmission of vertical loads from the superimposed stanchion to the stanchion beneath the component.

The

flanges

5 and 6 project beyond the web l and stiffener E2 to embrace the flanges of the adjacent horizontal beam 1. e. the projecting

flanges

5 and 6 are sufficiently long to admit the number of rivets or boltsorleng hxof *weld 3 fillet required to transmit the maximum bending moment met with on this joint.

The rigid connection between the component on the one hand and on the other, the two stanchion sections, one above and one below the component is provided by

plates

1, 8, and H the

plates

1, 8 affording between them a jaw to embrace the verticals. Plate ll transmits the horizontal shear.

Plates

1 and 8 transmit the maximum bending moment on the joint above and below the component respectively and project beyond the I section formed of

plates

4, 5 and 6 to enclose the flanges of the stanchions above and below the component.

Plate 8 (Figure 6) is formed. of two

longitudinal halves

8 and 8 each so slotted that it can be passed edgewise on to the

horizontal flanges

5 and 6. The

half plates

8 and 8 then closely embrace the I section and are welded to it and to one another. The width of these

half plates

8 and 8 is chosen to afford suificient material beyond the slots to satisfy design requirements.

Plate 7 (Figure 5) in the case of an outer stanchion where the horizontal beam is attached at one side only is in one piece and bolted to plate H1 and to the upper and lower stanchion shafts after the erection of the former.

It will be obvious that the prefabrication of these components C considerably simplifies and cheapens the production of steel structures; the various components required for any particular structure can be easily produced and for erection it is merely necessary to have the required lengths of I-section verticals for the betweenfloors spacing and to interconnect them by the components C. The various components would of course be designed to withstand the accumulated stresses to which they are subjected and which are a maximum at the intersection of the verticals and horizontals of a structure. The verticals i being interrupted at the intersection points could be shaped and dimensioned each according to its individual loading and stress. That is to say the shaping of the verticals follows design reasons only and no waste of material takes place out of practical reasons by choosing the same section for considerable lengths of the verticals to avoid costly splicing.

It will therefore be obvious that the components C afford the important benefit of saving material and at the same time prefabricated and stored as they could be, simplify and cheapen the production costs considerably and what is of highest importanceshorten the time of fabrication and erection.

Referring now especially to Figure 2, it will be seen that the dimension 0. between the front and rear faces, lb, 0, of the verticals or stanchions is constant. By this means it is possible to maintain throughout the height of the structure a central loading axis (i. e. a loading axis which is in a straight line from top to bottom and passes through the neutral axis of the section). Thus any eccentricity of loading can be avoided, which results in a further saving of material so cheapening the building costs. When this system of construction is applied to the connecting components already described (and these components are especially adapted for such a purpose by reason of the symmetrical accommodation of the verticals) these components would have a constant width between the faces of the jaws defined betsween the

plates

1 and 8 for receiving the vertica What we claim is:

1. In a building frame construction, a pair of aligned stanchions, a beam, and means for connecting the adjacent ends of the stanchions and an end of said beam comprising an I section having its web disposed vertically and its flanges horizontally, one end of the I section protruding between and being engaged by said adjacent stanchion ends, said web terminating short of said flanges at the opposite end of said I section to leave projecting flange portions between which the said beam end is received, a plate secured to and extending vertically above and below said I section and being secured in abutment with surface portions on the sides of said stanchions facing towards said beam, and a second plate secured to and extending vertically above and below said I section and being secured in abutment with surface portions on the opposite side of said stanchions.

2. In a building frame construction, a pair of aligned stanchions, a beam, and means for connecting the adjacent ends of the stanchions and and an end of said beam comprising an I section having its web disposed vertically and its flanges horizontally, one end of the I section protruding between and being engaged by said adjacent stanchion ends, said web terminating short of said flanges at the opposite end of said I section to leave projecting flange portions between which the said beam end is received, a plate securedto and extending vertically above and below said I section and being secured in abutment with surface portions on the sides of said stanchions facing towards said beam, a second plate secured to and extending vertically above and below said I section and being secured in abutment with surface portions on the opposite side of said Stan-- chions, and a third plate extending vertically between said projecting flange portions and being secured to said flanges and said Web and providing an end abutment for said beam.

3. In a building frame construction, a pair of aligned stanchions, a beam, and means for connecting the adjacent ends of the stanchions and an end of said beam comprising an I section having its web disposed vertically and its flanges horizontally, one end of the I section protruding between and being engaged by said adjacent stanchion ends, said web terminating short of said flanges at the opposite end of said I section to leave projecting flange portions between which the said beam end is received, two vertically extending co-planar plate halves secured to said I section on opposite sides of said web and extending vertically above and below said I section and being secured in face-to-face abutment with surface portions on the side of said stanchions facing towards said beam, said plate halves being slotted to receive said I section flanges whereby adjacent edges of said plate parts abut opposite faces of said web respectively, and a plate secured to and extending vertically above and below said I section and being secured in abutment with surface portions on the opposite side of said stanchions.

4. In a building frame construction, a pair of aligned stanchions, a beam, and means for connecting the adjacent ends of the stanchions and an end of said beam comprising an I section having its web disposed vertically and its flanges horizontally, one end of the I section protruding between and being engaged by said adjacent stanchion ends, said web terminating short of said flanges at the opposite end of said I section to leave projecting flange portions between which the said beam end is received, a plate secured-to and extending vertically above and below said I section and being secured in abutment with surface portions on the sides of said stanchions facing towards said beam, a second plate secured to and extending vertically above and below said I section and being secured in abutment with surface portions on the opposite side of said stanchions, and a third plate extending vertically across said one end of said I section and being secured to said I section and to said second plate.

KENNETH MYERS SCOTT.

OSIAS ABISCH.

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