US1008210A

US1008210A - Reinforced concrete structure.

Info

Publication number: US1008210A
Application number: US49085009A
Authority: US
Inventors: Theodore H Skinner
Original assignee: ONEIDA COMMUNITY Ltd
Current assignee: ONEIDA COMMUNITY Ltd
Priority date: 1909-04-19
Filing date: 1909-04-19
Publication date: 1911-11-07
Anticipated expiration: 1928-11-07

Description

T. H. SKINNER. REINFORCED GONGRETE STRUCTURE.

APPLICATION FILED APR. 19. 1909. 1,008,210. Patented N0v.7, 1911.

UNHED TATE PATIENT 'WEHEQE;

THEODORE H. SKINNEB, OF ONEIDA, NEW YORK, 'ASSIG'NOE TO ONEIDA COMMUNITY, LIMITED, OF ONEIDA, NEH ZOE-K, A CORPORATION OF NEW YORK.

REINFORCED CONCRETE STRUCTURE.

Specification of Letters Patent.

Patented Nov. 7, 1911.

Application filed April 19,1909. Serial No. 490,850.

forced Concrete' Structures, of which the following, taken in connection with the ac companying drawings, is a full, clear, and exact description.

This invention relates to certain improve ments in reinforced concrete structure as applied more particularly to concrete floors and beams at their junctions with concrete columns.

The main object is to establish a cantaliver reinforcement in the concrete column and floor at their junctions one with the other, by embedding portions of the reinforcing members in the column above and beneath the plane of the floor and similarly embedding other portions of the same reinforcing members in the floor or beam some distance beyond the vertical plane of the column during progressive building, so that when the concrete is set to firmly retain the reinforcing members in place, such members not only serve to resist shearing and tensile strains upon the floor, but also serve to centralize such strains upon the column where the pressure resistance is greatest, and to counteract the bending strains on the floor at opposite sides of the column. Another ob'ect is to unite the ends of the lower and upper cantaliver membersor rods so as to transmit the bending-strains upon the floor and arms of the cantaliver reinforcement to the portion of the column above, as well as to that portion below, the plane of the floor.

A further object is to rigidly connect the column portions of the cantaliver reinforcing members so as to afiord additional re sistance to bending or deflection of the cantaliver arms, and at the same time establishing unity and symmetry. in the reinforcement.

In other words, 'the invention, briefly stated, consists in producing a unitary selfsustaining cantaliver reinforcement .of the open-work skeleton type, which is at once light, strong and durable and capable of sustaining large floor areas and concentrating the strains from such areas directly to and axially of the column:

Other objects and uses relating to specific parts of the invention will be brought out in the following description.

In the drawings-Figure l is a top planv of a portion of a concrete floor and two columns showing two of my improved cantaliver reinforcements embedded therein, one for each column. Fig. 2 is a vertical sectional view through a portion of the floor andadjacent portions of the columns ex cept that the attaching members for the reinforcing arms and center supporting rod are shown in the elevation. Figs. 3 and 4 are top plan views of modified forms of atcaching members. Figs. 5 and 6 are sectional views taken respectively on lines 5-5, Fig. 3, and 6-6, Fig. 4.

In Figs. 1 and 2 I have shown a considerable section of a concrete floor 1 as supported upon a plurality of, in this instance,

two concrete columns 2 which are spaced some distance apart to indicate the relative positions of the cantaliver reinforcements which are embedded in the columns and floor, one for each column. Each of these 'cantaliver reinforcements comprises an upright central supporting rod or tubular bar 3 a series of rings or spiders 4' constituting attaching members mounted upon and adjustable lerigthwise of the rod or bar 3, and a plurality of radially projectinp; reinforcing members 5- arranged in pairs equidistant apart around the central upright rod or bar 3, and having their ends connected to the attaching members l, the reinforcing members -5 of each pair being arranged diametrically opposite to each other so as to produce a unitary cantaliver structure, with its axis substantially coincident with that of the column. Although it is desirable to arrange these reinforcing arms symmetrically or equidistant from each other around a. common axis coincident with that of the column,

be tied together bya it is evident that this arrangement is not absolutely necessary so long as such members are nearly equally distributed 'around such axis; and in fact in some places, especially in the direction of greatest span, additional reinforcing members -5- may be installed at such side of the axis of the column during progressive building. These attaching members, there-fore, constitute an important feature of my invention. and are preferably located Within the cross-sectional area of the eolunnmlnd above and beneath the plane of the floor l as clearly shown in- Fig. 2.

Each attaching member preferably consists of a central apertured hub and a series of radial arms spaced equidistant apart and corresponding in number to the number of reinforcing members -5 which may be required, said arms being provided with apertures for receiving the upright ends of the reinforcing members -5- to hold the latter a'fixed distance'apartand prevent their relative radial movement during pro gressive building of the concrete.

In some instances the outer ends of the arms of the attaching members -%l may circular band as shown in Fig. 3, but in all cases the arms are spaced apart to permit the concrete to be Worked through and around all parts of the attaching members and adjacent reinforcing members so as to firmly embed the entire canta liver structure in the concrete.

For light or moderate loads each of the reinforcing members 5 may consist of a continuous Wire or metal rod or bar havmg its intermediate portion deflected later-- ally or horizontally a considerable distance forming V-shape reinforcing arms and its ends extended vertically in opposite directions thii'ough alined apertures in the arms of the attaching members -4- so to hold the 'V-shape extensions -5 a fixed distance apart circumferentially and later ally. These arms are preferably intersected by a series of concentric rings 6 of Wire or similar comparatively light metal and are usually tied at their intersections to said rings by any suitable fastening means, as tie wires -7-, which, in this instance, are extended diagonally back and forth across the \/'-sh'ape extensions or reinforcing members -5 thereby forming braces or truss members -8- which prevent in a measure compression or distention of the opposite' sides of the ll-shape extensions -5-.

The attachingmembers 4. which are adjustable vertically along the rod or bar -3-- during progressivebuilding to conforn'i to the position" at which it is desired to locate the cantaliver reinforcements, are held in their adjusted. position by suitable building tions during such progressive building the forms, not shown, being; secured in proper position to receive 'umns and floor in Wlichthe reinforcing elements become embedded. During this progressive building the retaining members, such as the attaching members --4-, together With the rings -6 serve to retain the reinforcing arms 5--, and parts sethe :oncrete for the col' cured thereto, in fixed relation to each other.

The portions of the arms -5- adjacent to the innermost attaching members tare deflected rather abruptly, thereby preventing relative endwise movement of said arms in the attaching members. In placing these reinforcing arm 5 in position, the

attaching members 4- below the floor are first secured in place, after which the down Wardly projecting; ends of the arms --5-- are inserted in their corresponding apertures in their attaching members, leaving the upwardly projecting ends of said arms free to receive the attaching members above the floor, the latter members being then secured in proper position and tightened to hold the arms a fixed distance apart circumferentially, and also to hold said arms against endwise movement. The rings 6- may be secured to the arms 5- either before or after the latter are placed in position in the but it is evident that before these rings are permanently tied to the arms, the latter may be rocked or adjusted laterally in the attaching members lso as to position them the desired distance apart according" to the requirements of the Work under Way.

lit may be understood from the foregoing description and the drawings that the attaching members of the cantaliver arms may be firmly connected together and positioned on the central rod -3 as a unit instead of positioning the separate parts independently and when so assembled has the additional advantage that it may be allowed to settle with the concrete in Which it is to be embedded during progressive building.

What-I claim -is l. A. cantaliver reinforcement for con-- crete columns and floors comprlsmg an upfloor, sai

ta-chine members mounted on the bar above t l plane of the floor, and rolls embers and having their ion deflected aterally bed. into the l ne of the in: meii'ihers rods being 'ftici in the lioo' and co mm during piig ldmg.

i reinforcement for conid l'loors comprising attachmg in d means for supporting them 10. abve and below the olane co noination with rods having their en to said members and their intermediate portions extended laterally beyond the column into the plane of the members and rods being embedded in concrete durin progressive building.

3. A can-tall. reinforcement for concrete columns and tioors comprising attaching members arrang d one above the othersome distance apart above and beneath the plane of the iioor, means for holding the members in such position reinforcing rods having their ends attached to 'said members and their intermediateportions deflected laterally beyond the column and into the plane of the floor forn'iing floor reinforcing arms the opposite sides of each arm converging laterally from the column.

42. i cantaliver reinforcement for concrete columns and floors comprising attaching members arranged one above the other some distance apart above and beneath the planeof the'lioor, means for holding the members in such' position, reinforcing rods having their ends attached to said members and their intermediate portions deflected laterally beyond the column and into the plane of the floor forming floor reinforcing arms, the opposite sides of each arm converging laterally from the column, and cross connections between the opposite sides of each arm.

of the Pic:

A cantalivcr reinforcement for concrete columns'and floors comprising attaching members arranged one above the other coaxial with the axis of the column in planes above and beneath the plane of the floor, supporting means for said members and floor reinforcing rods l'iavingtheir ends at-' tached to said members and their intermediate portions deflected laterally beyond the column within the plane of the l'loor forming floor reinforcing arms, and connections between said arms also in the plane of the fioor said attaching members, rods and connections between the arms being embedded in concrete during PYCQ'IQSSlYG buildin 6. A cantaliver reinioicci'nent for concrete columns and tloors comprising attaching members and means for supporting them in planes one above the other coaxial With the axis of the'column above and beneath the plane of the floor, floor reinforcing rods arranged substantially equi-distant apart from said axis and having. their ends connected to said members and their intermediate portions deflected laterally beyond the column and Within the plane of the floor forming a series of radially projecting floor reinforc- 111G arms.

a. A cantaliver reinforcement for concrete columns and floors comprising attachingi members and means for supporting them in planes one above the other coaxial with the axis of the column above and beneath the planeotf thefioor, floor reinforcing rods arranged substantially equi-di'stant apart from said axis and having their ends connected to said members and their intermediate portions deflected laterally beyond the column and within the plane of the floor forming a series of radially projecting floor reinforcing arms, and additional floor reinforcing members connecting said arms.

8. A cantaliver reinforcement for concrete columns and floors comprising attaching members and means for supporting them one above the other coaxial with the axis of the column in planes above and beneath the plane of the floor, trussed arms arranged about said axis substantially equi-distant apart and having their ends attached to said members and their intermediate portions projecting laterally from the column Within the plane of the floor, said members and arms being embedded in the concrete dur ing progressive building.

9. A cantaliver reinforcement for con crete columns and floors comprising an'upright rod coainal with the axis of the column; attaching members slidable on said rod, and positioned respectively above and beneath the plane of the floor, separate devices for-holding said members in their ad-' coaxial with the axis or" the column in planes above and beneath the plane of the floor, floor reinforcing rods arranged about said axis and having their ends attached to said members, and their intermediate portions deflected laterally beyond the column in outwardly converging lines forming a series of radial arms Within the plane of the floor, position, and trussed arms having their ends and diagonal braces connecting opposite attached to said members portions of sand sides of the arms whereby each arm becomes I arms progecting beyond the column Within a trussecl reinforcement. the plane of the floor.

5 11. A cantaliver reinforcement for 0on In Witness whereof I have hereunto set 15 crete columns and floors comprising an upmy hand this 12th clay or April 1909. right column reinforcing rod, attaching THEODORE H. SKINNER. members sliclable on the rod above and belVitnesses: neath the plane of the floor, means for hold- H. E. CHASE,

10 ing the attaching members in their adjusted J. M. Hons.