US1111194A - Reinforced-concrete column construction. - Google Patents

Reinforced-concrete column construction. Download PDF

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US1111194A
US1111194A US76921613A US1913769216A US1111194A US 1111194 A US1111194 A US 1111194A US 76921613 A US76921613 A US 76921613A US 1913769216 A US1913769216 A US 1913769216A US 1111194 A US1111194 A US 1111194A
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column
head
reinforcement
flaring
concrete
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US76921613A
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Harrison S Taft
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors

Definitions

  • Figure 1 is a ver itical; section of the head of a reinforced concrete column;
  • Fig. 2 is aplan view show-1 ing the modein wliich the reinforcingasteel is arranged in and near the head of the column;
  • Fig. 3 isna vertical sec'tionion the broken line 3 23, Fig 4, of amodified form of column and head;
  • Fig. i is a plan view on a reduced scale of the column head: shown in Fig, 8-, Fig. 5 is avertical section atthe v line 5 5fof Fig.4;
  • FIG. 6 is a diagramrillus- .tratingthemethod of; reinforcing floor slab to belaus'ed in connection with my improved 1 reinforoedconcrete column;
  • Fig. 7 is adia- 1 reinforced concrete floorslab superimposedgram illustrating another mode of floor slab reinforcement;
  • Fig.8 isan elevation,vpartly ibroken away and: in isection, of a column surmounted by a rectangular .expanding' head;
  • a reinforced concrete column I G which" may be constructed inthe manner described in an application for United States Letters Patent filed .by me Specification; or Letters Patent.
  • I A plication m'a tra 22, 1913.
  • the steel reinforcement for the conical head is anchored in and extends upward from the bodyof the column G and consists of radial steel members R,
  • the members B being anchored inthe body of the column C and extending upward toward the 'geometrical baseof the inverted cone which *oonstitutesfthehead 1 H, the radial members Rand R being shorter than the members R, and arranged in such manner as to supply a-substantially uniform "quantity-"of reinforcing material per square foot of surface in the conical ⁇ head H at all "parts of the same.
  • the ends of thls" radial reinforcing material may be extended upward out of the conical head H, as shown in dotted lines atB, so as to beavailable for incorporation with a reinforced concrete floorslab, although'such extension of reinforcement of the conical head into the floor slab is "not necess'aryfnr the system ofconstruction which is characterized by the hollow expanding-headed columns herein described.
  • Theradial mem- 'bers R, R and R of thereinforcement are supplemented by circumferentially disposed members which'may be arranged in effect to constitute a continuous spiral extending" from the spirally, arranged reinforcement B in the top of the column Gto the similar reinforcement B in the hollow conical head
  • the helical or spiral form of circumferential reinforcement has theeffectof a series of reinforcing "rings of successively increasing diameters in conformity with the upward enlargement ofthe head H.
  • the circumferential reinforcements B, B emto stresses which tend to expand or burst theh'ead I-I.”
  • transverse reinforcement D comprising steel rods which extend dia- 1 1 at ipoints which are distantfrom'each other metrically acrossthecolumn head and are incorporated in the Webs W.
  • the diametri. cal reinforcementsD are preferably hooked or otherwise tiedto the circumferential reinforcement B as at D.
  • Vertical reinforc; ing material P may, if desired, be intro? quizzed to increase the rigidity of the central p'os'tP, andcons'titute it, in effect, a continuation of the column 0."
  • a reinforced concrete floor is to be supported by c a group of columns" such .as here'- inabove described, the reinforcement of. such floor. may be; and preferably is, wholly in:-:; dependent of thereinflorcemeht. ofthe columnsaand heads;- themselves A in so far as resistance to stresseslis concerned ;.-.as iilluse tratcdzin Fig. 10 a reinforced concrete floor slab F; maybe molded on top oftheycolumn.
  • Fig. 7 there is illustrated another mode of reinforcing a concrete floor laid upon a group of columns, the reinforcement in this case consisting of longitudinal, parallel. re-
  • the columns are preferably so grouped that awdiagonal re-.- inforcement rod, such, as N, which. isjust tangent to the outer periphery of one of the column .heads,.will pass Within or very close to the periphery of the next column head so that each diagonal rod in the system will receive direct supportfrom theco'lumn heads less than the distance from center torenter diagonally betweenuany two column heads.
  • Figs. 3, 4, 5, s, 9 and 10 which illustrate the preferred form ofinternally :Webbiedhollow expanding coliunnl 'headgthe hollow expand 53 P as ll'ltPElgStf-i, Ar nd y; which webs consists of: the diametrically orfidia'go '100 nally arranged horizontal ,IiOdS WhiOl'U'fun-T ithermore tie the rings or spirals of the c1r-" I pumferentml: IBIDfOI'CGIIIQ IIti '-d1ametr1cally.
  • The'column head hereinabovedescribed is shown as a development at the top of a'column, adapted to receive and support a superincumbent floor load. It is obvious that a column of essentially the same characteristics, with asiniilarhead, may be inverted, the head constitutinga lower head orbase, adapted to'rest upon a foundation,
  • a column head comprising a hollow concrete body, transverse concrete .members.
  • a column head comprising a flaring hollow concrete body, transverse concrete websintegral with said body, and reinforcement arranged in flaring formfinfthe body andtransversely in said webs.
  • flaring webs integral with said body, reinforcement arranged in flaring form in the flaring body and transversely in the web's, said reinforcement consisting of radial members and circumferentially disposed members'in the flaring body, and transverse members in said webs.
  • a column head comprising a flaring 'concrete body, transverse concrete webs integralgwith said body, reinforcement arranged in flaring form in the flaring body and transversely in the webs, the"body reinforcement comprising radial members andcircumferentially disposed members which ,inclose the framework formed by the radial a column head comprising a flaring hollow concrete body, transverse concrete webs integra'l with saidbody, and reinforcement arranged in. flaring form 1n. the sald concrete body and transversely in the said webs,
  • a column head comprising a flaring hollow concrete body, transverse concrete webs in-' tegral with said body, and reinforcement arranged in flaring from in the flaring body and transversely'in the webs, said reinforcement consisting "ofradial members and circumferentially disposed members in the flar 'ing body and transverse members in the webs,,portions ofsaid reinforcement extending from the head into the concrete column.
  • afcolumn head comprising a flaring hollow body, transverse concrete Webs integral with said body, reinforcement arranged in flaring form in the flaring body and transversely in the webs, said reinforcement comprising radial members and circumferentially'disposed members which lnclose the framework 12th day of May 1913.

Description

H. S. TAPT.
REINFORCED CONCRETE COLUMN CONSTRUCTION APPLICATION FILED MAY 22, 1913. I 1, 1 1 1,1 94. Patented Sept. 22, 1914.
. 4 SHEETS-SHEET 1. Q
THE NORRIS PETERS 60.. PHOTO-LITHQ. WASHINGTON. my C.
H. S. TAFT.
REINFORCED CONCRETE COLUMN CONSTRUCTION.
APPLICATION FILED MAY 22, 1913. 1 1 1 1 1 94.
Patented Sept. 22, 1914.
4 SHEETS-SHEET 2.
THE AORRIS PETERS c0 PHOTD-LITHOY, WASHINGTON, n c
H. S. TAFT.
REINFORCED CONCRETE COLUMN CONSTRUCTION. APPLIGATION FILED MAY 22, 1913.
1, 1 1 1, 1 9 1, 1 Patented Sept. 22, 1914.
4 SHEETS-SHEET 3.
ZiZiZesses: 2
THE NORRIS PETERS c0. PHOTO-LITHO., WASHINGTON. D. C,
H. S. TAFT.
REINFORGBD GONGRBTE COLUMN CONSTRUCTION. APPLICATION FILED MAY 22, 1913.
Patented Sept. 22, 1914.
4 SHEETSSHEET 4.
/l 4/ 2 4 gin 64144,
ff H- rm: .JORRIS PETERS c0 PHOm-LITHQ. IIASHINGTON. r), C.
nnmrononn-ooncnmn COLUMN ooivsrnucrron.
V To all whom acitizen of the UnitedgStats, and resident of Seattle, in the county' of King; and State of Washington, have invented new'and ,use ful Improvements inv Reinforced-Concrete. ColumnaConstruction, of. which :the following is a'specificatiom My invention relates tol reinforced con:
crete construction,- andconsists in-Qcertain V improvements by WlllCh. column'arxsupports fondecks or floors are endowed :with ,an
elnforcedconcrete columns which .eme
their effective, operation, fu pon' attachment to the covering floor orqslab by "means of" internal steel reinforcement, although the v reinforcement of the column head may, for a convenience in"; supporting the reinforcing metalduring construction be carried into or "incorporated with the reinforcement ofvad concrete floor, slab. In connection withthis. improved column, simplifications and 1 m.- provements 'oflfloor slab reinforcement are ;ma'cle possible.
I In the drawlngs hereto anneizedxtwhich' illustratemy inventions,Figure 1 is a ver itical; section of the head of a reinforced concrete column;Fig. 2 is aplan view show-1 ing the modein wliich the reinforcingasteel is arranged in and near the head of the column; Fig. 3 isna vertical sec'tionion the broken line 3 23, Fig 4, of amodified form of column and head; Fig. i is a plan view on a reduced scale of the column head: shown in Fig, 8-, Fig. 5 is avertical section atthe v line 5 5fof Fig.4; Fig. 6 is a diagramrillus- .tratingthemethod of; reinforcing floor slab to belaus'ed in connection with my improved 1 reinforoedconcrete column; Fig. 7 is adia- 1 reinforced concrete floorslab superimposedgram illustrating another mode of floor slab reinforcement; Fig.8 isan elevation,vpartly ibroken away and: in isection, of a column surmounted by a rectangular .expanding' head; Fig. 9 is. a' plan'view of the column head of; Fig. 8 ;IandaFig. 10 is an elevation,
"partly broken and partly in section,
of a column "with-rectangular head and thereon.
Referring 2, a reinforced concrete column I G which" may be constructed inthe manner described in an application for United States Letters Patent filed .by me Specification; or Letters Patent. I A plication m'a tra 22, 1913. Serial Nb. 769,216.
improved a and superior- ;capacity for carry:
In 1 w i "body'my improvements-doznotdepend, for-1 aelaasepmz, 1914.
' concurrently herewith, Serial No. 769,212,
is surmounted byan integrally-"formed ho-llow conical head The steel reinforcement for the conical head is anchored in and extends upward from the bodyof the column G and consists of radial steel members R,
R and R the members B being anchored inthe body of the column C and extending upward toward the 'geometrical baseof the inverted cone which *oonstitutesfthehead 1 H, the radial members Rand R being shorter than the members R, and arranged in such manner as to supply a-substantially uniform "quantity-"of reinforcing material per square foot of surface in the conical {head H at all "parts of the same. If desired, the ends of thls" radial reinforcing material may be extended upward out of the conical head H, as shown in dotted lines atB, so as to beavailable for incorporation with a reinforced concrete floorslab, although'such extension of reinforcement of the conical head into the floor slab is "not necess'aryfnr the system ofconstruction which is characterized by the hollow expanding-headed columns herein described. Theradial mem- 'bers R, R and R of thereinforcement are supplemented by circumferentially disposed members which'may be arranged in effect to constitute a continuous spiral extending" from the spirally, arranged reinforcement B in the top of the column Gto the similar reinforcement B in the hollow conical head The helical or spiral form of circumferential reinforcement has theeffectof a series of reinforcing "rings of successively increasing diameters in conformity with the upward enlargement ofthe head H. The circumferential reinforcements B, B emto stresses which tend to expand or burst theh'ead I-I."
'While, formany purposes, a hollow expanding .ordpwardly flaring head, such shown in Fig.1, will sufiice, the further remforced and strengthened form shown 1n 1 .95 brace the radial reinforcements R, R and R so asto afford the necessary resistance Figs. 3, 4 and 5, is, I;believe,"to he pm-. a
ferred.:; In these figuresthe upwardly flaring head H surmounting the column 0, is provided with vertical transverse webs which at their'intersection form the central postfiP'. Inaddition to the radialand circumferential reinforcements R, B and B, there is provided transverse reinforcement D; comprising steel rods which extend dia- 1 1 at ipoints which are distantfrom'each other metrically acrossthecolumn head and are incorporated in the Webs W. The diametri. cal reinforcementsD are preferably hooked or otherwise tiedto the circumferential reinforcement B as at D. Vertical reinforc; ing material P may, if desired, be intro? duced to increase the rigidity of the central p'os'tP, andcons'titute it, in effect, a continuation of the column 0." i
heads, or, for thatimatter, might be formed f a reinforced concrete floor is to be supported by c a group of columns" such .as here'- inabove described, the reinforcement of. such floor. may be; and preferably is, wholly in:-:; dependent of thereinflorcemeht. ofthe columnsaand heads;- themselves A in so far as resistance to stresseslis concerned ;.-.as iilluse tratcdzin Fig. 10 a reinforced concrete floor slab F; maybe molded on top oftheycolumn.
separately and independently and then=laid as a.;comp'leted= slab upon the columnar.- Ob. viously,however, it- 1will better serve the economies tof construction to construct such. floor slabs in saw. upon the columns. Referring to.F1g. 6,, the .headz'H.-of.an expaneling-head column,'such.as above de-i Iinesrepresenting a mode .of reinforcement scribed, is shown in; dotted lines, the full of the floor slab toibe laidupon and sup-,: ported by the column head H. 1 Rings T. of reinforcing isteel are'laid concentrically in the slab and radially extending reinforcing.
pieces Sare incorporated inathe slab.so as toccooperate with theouter rings T and to extend .beyond the periphery of the. column i head H. When the number of columns with. upwardly flaring heads -H are arranged ram dially in longitudinal and 1 transverse rows,-
annular .and radiating. slab reinforcements, I
such as shown in Fig. 6,.wil1 operateefe fectively to resistbending moments-developedin the floor slabs. j Y
In Fig. 7 there is illustrated another mode of reinforcing a concrete floor laid upon a group of columns, the reinforcement in this case consisting of longitudinal, parallel. re-
.inforce'ment. rods F, transverserods Gr and diagonal rodslVLand N; The columns are preferably so grouped that awdiagonal re-.- inforcement rod, such, as N, which. isjust tangent to the outer periphery of one of the column .heads,.will pass Within or very close to the periphery of the next column head so that each diagonal rod in the system will receive direct supportfrom theco'lumn heads less than the distance from center torenter diagonally betweenuany two column heads.-
v."Practica'lly every 2 diagonal-rod therefore will pass over and be supported by each of the column heads in two-adjacent diagonal rows. H
.For some purposes it may be desirableto employ expanding. or upwardly flaring con ical column headswhich, instead of being geometrically conical, be in form. .Such forms are illustrated in Figs. 8,.9 and 10 in which the headsH are rec: tangular in horizontal section and are reinforc -ed. like. the conicaly head H by radial .reinforcement R and peripheral reinforce- :mentB'a. Preferably, also, column heads-of :this character will be further strengthenedby webs which ma y extend both diametrically and diagonally across the interior .of
the hollow head. a Such WcbSFareshoWn at V and V in Fig.9, andfthjettransverse, that is to say, diametrical and-z diagonal -rei-nforcement forsuch w'ebs is. indicated at (Z- and cl g the peripheral" reinforcementbeing so a lsh'ownin'dotted: lines atBL i ReferI-ing '-to--'the construction shown in.
Figs. 3, 4, 5, s, 9 and 10,which illustrate the preferred form ofinternally :Webbiedhollow expanding coliunnl 'headgthe hollow expand 53 P as ll'ltPElgStf-i, Ar nd y; which webs consists of: the diametrically orfidia'go '100 nally arranged horizontal ,IiOdS WhiOl'U'fun-T ithermore tie the rings or spirals of the c1r-" I pumferentml: IBIDfOI'CGIIIQ IIti '-d1ametr1cally.
The ends Figs. 1,22rarid may-be bent insuch a wayx-as to ti'e the slabsteel to the. head-steelybut even in t-his case the radial head-reinforcement will not act as a re-.1 inforcement "ofthe slab'itself,- y 3 l I In. the construction illustrated, in f-Fig: 7' the extreme peripheries of the column heads to the same1diagonal, d5": line: so;that, in effect, every diagonal rod' will pass overeach 1 may be the head should .beo'fsuch a size as reinforcement will: obtain the advantage of the. shortest vpossible-1 unsupported span. i The reinforcements, such asshown' in Fig." 7, will preferably-ybe -in duplicate,- consist-.1
ng of two distinct similar sets of longitu :linal, transverse and cliagonaljrods, one net- Work'of rods-being located nearjthe bottom near the top.. The'-bot tom layer of rods will then take up all the tension stresses inthe lower part-of the slab orrtfloor and'the" top rods all the negative :bending' stresses 'over the supporting slabs; 10;, these negativein two adjacent diagonal rows'arectangentf head. iWhateverithe. actual column spacing 115.
to'meet this requirementasst-that Jthe slab of the slabor flooring; and the 5 other set125 v :ofreinforcing rods are present in the floor or on a raft or crib, substalmng a reactive stressesycan be taken care of by. the individual spider web arrangement shown ,in Fig. 6, preferably in codperation with the network arrangement shownin Fig.97, em-
ploying thenetwork of straight rods at or 'near the bottom of the floor slabs and the spider web 7 reinforcements fat the level 1 near the top of the floor slab.
symmetricallybetween each group of four p column heads.
Itlwill be noticed that where the system illustrated inFig. Tisused, atleasttwo. sets slab, as at the rectangular spacer located With this arrangement-7% of the floor slab has two such belts of. rods,
39% has threebelts, and 54;% has fourbelts,
span from head to head.
mended, however, that in all cases a proper measure of diagonal reinforcement be,em-
ployed in the manner hereinabove suggested.
Among. the advantages of the above de- H scribed construction the following, maybe enumerated: The upwardly flaring reme forced concrete hollow heads of the columns are self supporting and amply capable of The stresses developed in the construction are simple, Irrespective of the type of :head
1 5 0 employed, notjless' than two sets v of belts of Tresisting the expansive stressesfof superimposed load. The slab or floor: reinforce ment needs inno way to betiedto or incor- 1 ;porated with the column head reinforce- 1nent.. Perfectly straightunbent reinforcing. rods maybe employed throughout the entire deck slab and not a single cant-aliver reinforcing bar is requiredin any of the types of constructionherein described. The; spans without direct support from thecol-f umn heads are short and the disposition of reinforcing material in thefloor slabsin] re .lation to the column. heads is such that a minimum of unsupported span is insured,
reinforcing rods are found in every portion The'column head hereinabovedescribed is shown as a development at the top of a'column, adapted to receive and support a superincumbent floor load. It is obvious that a column of essentially the same characteristics, with asiniilarhead, may be inverted, the head constitutinga lower head orbase, adapted to'rest upon a foundation,
load from below. In using the term 2. A column head, comprising a hollow concrete body, transverse concrete .members.
A. The comblnation of a concrete column,
head I some thereby an" inverted head or base of the. character described. 7
I claim: i y 1. A" column head, comprisinga flaring hollow concrete body, transverse concrete websintegral with said body, and reinforcement arranged in flaring formfinfthe body andtransversely in said webs.
flaring webs integral with said body, reinforcement arranged in flaring form in the flaring body and transversely in the web's, said reinforcement consisting of radial members and circumferentially disposed members'in the flaring body, and transverse members in said webs.
3. A column head,- comprising a flaring 'concrete body, transverse concrete webs integralgwith said body, reinforcement arranged in flaring form in the flaring body and transversely in the webs, the"body reinforcement comprising radial members andcircumferentially disposed members which ,inclose the framework formed by the radial a column head comprising a flaring hollow concrete body, transverse concrete webs integra'l with saidbody, and reinforcement arranged in. flaring form 1n. the sald concrete body and transversely in the said webs,
part of the said reinforcement extending from the head into the column.
5. The combination of a concretecolumn,
a column head comprising a flaring hollow concrete body, transverse concrete webs in-' tegral with said body, and reinforcement arranged in flaring from in the flaring body and transversely'in the webs, said reinforcement consisting "ofradial members and circumferentially disposed members in the flar 'ing body and transverse members in the webs,,portions ofsaid reinforcement extending from the head into the concrete column. '6. The combination of a concrete column,
afcolumn head comprising a flaring hollow body, transverse concrete Webs integral with said body, reinforcement arranged in flaring form in the flaring body and transversely in the webs, said reinforcement comprising radial members and circumferentially'disposed members which lnclose the framework 12th day ofMay 1913.
CL'IrroRn WILEY.
'l copies ot this patent may be obtained. for five cents each, by addressing the. Commissioner of .Patents, I i Washington, D. G. i
i formed by the radial members, parts of said reinforcement extending from the head into the concrete column. v Signed by me at. Seattle Washington this
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514909A (en) * 1967-11-02 1970-06-02 Technical Investment Corp Monolithic building
US20080110087A1 (en) * 2006-06-01 2008-05-15 Serio Ronald T Wall flower pot mount and post flower pot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514909A (en) * 1967-11-02 1970-06-02 Technical Investment Corp Monolithic building
US20080110087A1 (en) * 2006-06-01 2008-05-15 Serio Ronald T Wall flower pot mount and post flower pot

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