DE1812865A1 - Method for the reinforcement of flat reinforced concrete components - Google Patents

Description

ANDREASVANSCHYNDEL 4041 stolzeniberp / Neuss, December 4, 1968

Brunnenjtrone 72 ItU'on 021 06/33 / I 'Senior Engineer

VerT your for the reinforcement of surface items Steel concrete components

S ahlbetonbauboile are mainly reinforced with the help of individual bars or with reinforcement bars. In the case of reinforcement from individual bars, it is possible to achieve the calculated steel cross sections in tier; üilmercchnitbe the pound volumes of the individual sbbones of bleaching diameter are reduced and, in order to achieve smaller ^: ^ oversections; e are enlarged. Is a _Verrin; > run _; ; or enlargement of the distances is not sensible for constructive and technical reasons, Sbbäbels of different diameter can be arranged / grounded. Thus every component is structurally correct and ideally to be reinforced.

The IT part of the individual reinforcement consists of the large xi.rb) iusaufv; and and the necessary in a considerable amount of the equipment and two von Haken, vjenn besbimmte Verankorun üani'orderun ^: en lie on, mobilizing every second or even, every:.; zv / eiten and third otxbec, ^ usleQ-en of the individual otabe in the richbi ^ Gu Pol e of er iden and auiVele ;; i: en ocilben, miss- borrowed iostlc un - de "individual room on the formwork in both rooms; oh ^ un; '; srichtun. en, sovjig securing the feisbjelet '^ en L ^ pje der oinzelnon ot'Vbo by connecting the rods of the L njs- and _H uer-I ¹ Ku i; un :; on their Ilrou /, ..in sinks.

Lie zv / oite uittun ^; of reinforcements from flüciienurci; jon StahlbcUoabi'.uüuilon looks at _t > .us panktycschweiliton liewehi'un ^ smatten, νιο Ic ho zur Lewehrunf; of a component next to each other nib one -: onr. ·. ; ru. ': biv erioroerlichen lateral. overcover _o laid v / ground.

/ orbeil di23er Reinforcement s.irt lie b in doi · Vori'erti-'un '"':. '.'!" chi :, rm il.h) .lbii; he Reinforcement unit Lon, the fabrikrulßi _v "herber; barks v / ercen. Liese;, estaLi; en a quick. ^ blaui des Bevioni ^v unf iseinb iuorj, since the one with a reinforcement;

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and the development of the links. The ^r ; '~ arre connection of the Li'ui'.sunr ¹ . _; u- ^ r rods for a well-marked Vorbund sv / ischen Eewehrun '"and Be: on _e

ii.llerrlinc-3 there is a certain stupidity in the gen anno en 7or haste connected as the Ji; '.hliuerachniijb der LiLn ^ s- and: <uerstods per m BreÜ; e for the Vorfevtiamg must be predetermined and that in the '..' ahl of -i.bsta.nde and in the assignment of the available standing diameter.

oo L. '. b industry in the ./ can. Through the constructive definition, the number of distances v / eiuer is included; eschriink ^: .; by the requirement that tra'ionde 3b ^: "be only have a maximum band of 200 mm and distribution widths one of 333 'nm, i.e. for mats 300 mm (300 = 4. 75 = 0. 50) . to Cot abahlbetontechnischen demand d \ ß the, practice envelope of BewehrunpjssuLlbe must be ensured in the concrete to renüfcen be dtababstände below 100 mm provided only in special cases 3omit remain as a structurally acceptable obabfos. llnde the dimensions ICO and i ^ O mm For load-bearing bars, since the bar spacing 00 mm is only provided for deck thicknesses of> 13 ei (spacing 1.5; d = deck thickness) ^ s rods - generally 2v \ ^ s tHbe - the ^ bsb ^ nd of 150 mm preferred. For the. Distribution rods) errcebon.line required large number of cross-sections can therefore only be £ 30 as large as otab diameter r are available, 3tab diameters of 4.0 to 12.0 mm are permitted in terms of control The diameter range corresponds to the wire gauge with the diameters' i-, 0 4.2 4.6 5.0 5.5 δ, Ο 6.5 ......... 11.0 11.5 12, 0 = 18 different diameters,

ρ results from a _t uerschnittbereich 0.84 to 7.5 cm ^, divided into 18 different uerschniu ^ ^ e · To the. _t uerschnitt3bereich zoom, double rods were introduced as Längsatäbe in the mesh reinforcement in the past, whereby

009824/1098

BATH

the ueruchnittsbereich up to 15.08 cm (150. 12.0 d) and the ^ "cross-section number mf 2 · 18 ■ 3G extended wu ^ de · The multitude of hat types and the many mls required The diameter of the diameter influences the manufacturing process (. N the essential·

Then there is this multitude of something to be striven for. ». Ul; oimtion in towards completion

The costs for storage in the manufacturing plants and in the trade are therefore considerable and cause a substantial one Increase in the price to be paid by the user - maintenance such hats are in the building contractor's yard wet; en of the multitude excluded.

Yellow the named .Juerschnitks number of 36 isi. ; for the construction economic reinforcement in practice is not sufficient in many cases. Mm therefore uses müi, lent a two-layer reinforcement to allow for the possible overcut area and to double the number of superclinities and by combining them different types to achieve further cross-sections and thus the differences between two successive clutches to zoom out

However, these measures reduce the costs for processing and processing increased significantly.

One tries to beoepjien these increased costs by the fact that the two-layer re-staggered reinforcement is used, in which the The second mat layer adapts to the torque curve and is shortened will · The number of different types and sizes of hats is increased by this measure, so that the workload and the space requirement on the construction site are significantly increased.

The application <| he restaffelfcen reinforcement are available: ul: erdem new knowledge against, which cause the 3 gun unity parts ending in the to ^ area, if they are not anchored in the pressure area, aleo are not bent open, only with relatively low ochuba tensions are admissible, then in many cases there are two two ~ lagii ^ e reinforcement with its disadvantages but without / advantages of Graduation is possible.

We have now made many attempts, the inch part of rigidity, To provide advantages in the form of steel spirits. 3o . Only mats are used today, those in the side Coverage area of the mats, i.e. at their LiIn edges.vn 1/2 dee .Aaerschni:; it is .n ~ eovänet in the middle area, so

BATH ORIGINAL

will. But even all of these attempts can have the disadvantages of which the previous system in production and in the application as a result of the rigidity of the system - clinging, not compensating.

In the German patent specification 96964-5, a reinforcement arrangement describes how the rigidity of the mesh reinforcement should be eliminated. The task set that Eliminating rigidity is solved in an ideal way. However, there are disadvantages, such as significantly increased effort Transverse reinforcement through increased cover, increased reinforcement, because this is 1/5 of the greatest achievable longitudinal transverse Gchni'ötes his mui; as well as / educates v. on the steel consumption requirements Advantages "he staggered reinforcement can be accepted.

Automation in production seemed feasible with it. But that this reinforcement arrangement can not be used for biaxially gespinnte components, resulting in j that for such Bu; hasten the usual reinforcement are sys tem must maintain. After all, the proportion of such mats is around 50 % of the total amount -αϊ reinforcement for flat parts. It is because of this system that the introduced laying measures with regard to the covering of mats by means of a new. three stitches out - "ie rotten about-" cooked up are ücllen must be -eLndert causes .ben Liese ü -chteile ur.n Ilemmiiisc n that this reinforcement'inordnung, has not yet been introduced in ai e rraxis, in? The German 1st draft 975059 deals with a further reinforcement system, which is intended to remove the insolvency of the 2nd reinforcement, whereby Il .tten Ii is used in a width customary in ice "ier. coiler., i-rten this o7 / D "ems can door uniaxial and z: -; e ± .cr.si-- beweh.:"e B ^ ur.eile used v; er ^f .en and the staggered Zeve ' - "un- is uncritical.

Lie .. .ch:. ~ Ile regarding the deviation from standard coverage instructions s and the increased consumption of reinforcement "remain in place.

This honor system, too, has not yet been able to enter the Find practice.

The invention is based on the idea of a new living space Advantages of ii-tt '-.- nbewehrun --- and - "ie der _, inzelet hbev / eh" · -.:.

00982A / 1098

to unite, not to change the rules of use of the mats with regard to the surface covering of the mats, to use the advantages of gas-filled reinforcement without restriction, to restrict excess reinforcement losses to a cohesively required minimum ^; \ nkor., to eliminate the disadvantages of rigidity and to achieve far more cross-sections with a few conventional Hatter types combined with a few new types, since it is possible today with other reinforcements; In doing so, as little tab spacing as possible and as few otab diameters as possible should be used.

According to the invention, this is illustrated by what is described below Yo-driving achieved with the i-i itten conventional and commercially available Width with and / or without .Edge saving for use come.

uie Kitcen are covered with the required coverage depending on the load on the component. In the second miter layer, narrow mat strips, the width of which corresponds to the constructively largest possible bar spacing of 200 mm or a fraction or a whole multiple of this dimension, are arranged at axial spacings of up to 1.0 m. " .ichstuben and / or double bars exist. Measurements of this strip are r.ii :; the longitudinal stave you. "- ch ochweißung, bracketing du3: cli metal-1: 1 -nnnor: i, '/ ericnünung or ICunststoi'f connected. The ye "bond can be shear-resistant, so that the rods are also effective for seduction in beguiling, or light-shear-resistant, if ue ..." jibe "ur serve as holding rods.

ijie in 'vorlegten \ ev first Lige Had contains * 1, s the' ^ uerschnittsan: eil, the ger for reinforcing a component of support for on-1 durchgehen- · must. The two; e M.ttenla ^ e is ius' ien narrow xJowehr Li os ^ r-eiien-formed in such a way that the unit π er necessary., Oversized; t is achieved. This so:; esch: .f ene second part of the reinforcement ¹ squ ' ^j r; 3chnitt; it can be on "blici in 2ugbe.ro and, as has only been the case with single reinforcements up to now, be bent open, so that the differential reinforcement is made possible again for all areas of tension, since those are no longer required in the area of application

009824/1098 ^BAD ORIGINAL

-he)

Reinforcement parts anchored by bending in the pressure area v / earth and, in the case of continuous plates, to accommodate the negative Moments become effective

Since a reinforcement strip of 2 or more bars with a width of ~ 200 mm has a spatial effect, the upper negative reinforcement is much more stable than was previously possible with the requested reinforcement. The installation of reinforcement is much easier, as these new types of bent-up elements are not ■■. _? tilt, which makes arranging the reinforcement of planar rhombic parts unnecessary j the number of pieces required to support the upper reinforcement can be reduced, since the bent strips also serve as spacers Depending on the number and spacing of these, a large number of reinforcement cross-sections up to twice the value of the cross-section of the first Lu. : e of a basic mat type can be achieved.

It follows that with a very small number of types of mats conventional type with at most the same orange number from strip types the cross-sectional area for reinforcement

Had to be covered from about 1.0 to 45.0 cm / m.

Today, for example, a range of -Aierschnitrs

0.92 to 22.62 cm / m for reinforcement of uniaxially reinforced components 24 different mat types in standard stock mat programs necessary. The longitudinal bar cross-section forms here; each m The width of the battens and the cross-section of the rods per meter of the length of the battens Jrag cross-section or the distributor cross-section.

With these 24 types of mesh, only 24 different types of reinforcement can be covered. Since the required steel cross-sections are only rarely the same as the predetermined series of cross-sections, substantial over-reinforcement cannot be avoided, as under-reinforcement cannot be justified for reasons of stability. Of course, over-reinforcement means more steel is used. With the mat moving systems known today, this additional consumption fluctuates between 10 and 20 # ♦
For the reinforcement according to the invention, for example, only £ q1-

End mat types required for the same cross-sectional area: 6 types of mat of commercial type and 5 types of strips. -

-V-. 009824/1098. ^M0W *

With these 6 commercially available mat types and 5 types of strips, * for example, at center distances of 1.00 0.90 0.80 0.70; 0.60 0 ₉ $ 0 m can be distributed over the reinforcement width, L 6.6 .5-180 different cross-sections can be achieved

f . While for the commercial center ram 18 different L bar diameters are required, only 6 different bar diameters are required for the external reinforcement according to the invention.

As already stated above, Jille exercises in the past have pursued the goal, not static to avoid grooved cross-sections and the rigidity in Eliminate the long-term inconvenience of the mats. L ibei were the length of the crossbar and the rigidity with regard to the external etabquerschni e apparently accepted as inevitable

Thus, in the middle of Batenten 96964-5 and 975O? 9, the excess weight losses were significantly reduced by increasing the upper covering dimensions, and an enlarged cross-section was generally provided so that it was sufficient for the largest possible cross-section in the mat type. For example, the are arranged in Ulen blends which is less than the gröfltersielbare _x uerc "niiitt eind 'grSBere cross sections as required r ..' can reach whereby the cross bar loss only the HSHE of the required transverse reinforcement · Depending Bewehrun ε .rt k nn of Additional consumption up to 200 % of the necessary reinforcement reinforcement. Lie rigidity of transverse reinforcement; in mesh reinforcement has a relatively strong influence on the economic efficiency of the reinforcement.

Among other things, to reduce the disadvantages, mats were manufactured and used for four-sided mounted 3-membered beon components, in which - ^ 4-0, 6C, 30 and 100 % of the Lenges'ab cross-sections are intended as cross-bar cross-sections. This selection is made in order to the fertii-ur. Keep costs within bearable limits jbu. Through these ■ cross-section increases, over-reinforcement of the transverse reinforcement | · of 25, 3p and 50 % and cLjuait can have the same weight and

No cost increases; related to the total reinforcement ■ * .. tr. en the additional costs around 10 - 15 f » · yir a cross-sectional range from 0.92 / 0.92 cm ² to 22.62 / 11.31 cm. / m werr.en; "7 mat types produced. With the for two-sided

009824/1098 ORIGINAL BATHROOM

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stored components provided for 24 types are for one already Simplified mat program 181 mat types required. With the reinforcement system according to the invention, transverse reinforcement loses ;; as with the "Länris reinforcement completely avoided there is no additional consumption due to increased excess cover

2 l-'iir a cross-sectional area of 0.9 to 36.0 cm / m for the

ρ Longitudinal reinforcement and from 0.9 to 18.0 cm ~ / m for the copper reinforcement are only 6 types of G-round im.tt and 5 types of strip required D ^: with is the possibility of complete automation for production. ^ effeoen.

Compared to the known types of reinforcement, significant steel savings can be made be achieved"

The production process is simplified and made cheaper to a considerable extent » The costs for warehousing in the workshop and at Concrete steel trade will be reduced significantly, and stock management will be significantly reduced at the building company yard is made possible by the type-wise small program, whereby production peaks that Internal delivery times have avoided and the time increase for procurement and installation of the reinforcement is significantly reduced.

ffijp »1 shows the arrangement of base mats with edge savings; the longitudinal bars of the hats can be double and / or single bars ·

Fin :, 2 shows the order of the allowances between the overdeclcunr; s of the mats,

rif:;, g shows the arrangement of base mats without edge in savings, so / ie arrangement; the allowances between the overlaps

F i? .. 4 marks the formation of the allowances.

The longitudinal rods 1 can be single and / or double rods be. The, stay bars are Einfv.ch bars and with the longitudinal bars connected by stapling, plastic or spot welding.

ORIGINAL INSPECTED 00982 ^ / 1098

Claims (1)

Claims Claim 1 Procedure for the reinforcement of planar reinforced concrete components with commercially available reinforcement mesh !! commercial width and supplements made of narrow strips of reinforcement mat. Reinforcement mats and hat strips made of lunar and ... _: outer bars that cross at right angles and which are connected, preferably welded, to one another at their intersections, are characterized by the fact that the subbordeckun.7; en the worn mats of the first M.rttenl: ^ e drive at least one admission, consisting of at least two LiLn sstäben, arranged in such a way that the averaging of all ^ uersclir.iutsanh.V.ui'un s is possible and this mediated cross-section in each case the constant cross-section of the first reinforcement si .. 'ce becomes ^ schl \ en, and further ^ indicates that with a mat type of ors.on lapre and strike type of the second layer depending on the number of arranged .Jbreixer.type a A large number of adjustments are achieved. ■ »r.spruch 2 / learn η I claim 1, characterized?: ekannzeichnot that by arrangement'-u: a: "· from Sula _t ^r e-Mattenstreii'cn, in ^ eüenseiti ^ .en., bs u-md of at least that for reinforcement 'rsstübe prescribed maximum dimension and are no';'rawas' \, 00 m, across the CBER Jeckun.-en matte of er3iTo.? o W ittenl · ■ e uerbewehrun a variety of ^; .uersciinitten S ( achieved v / earth that was added to the reinforcement cross-section of the first ι · - ttenl t, ^r ; e: es6hla on. In apruch ^ ■ j'nvf d " " · οη η ..ch claim I, characterized [re-denotes, d ■■. << v.lo M: -. tton ; > ■ <■ evr : .ovi L i * o: /i.tter. .'Gj ¹ Vjondet v / ordon, whose ... uerscJinit ü the uj '"r ,'j.'j-."He; Γοογ the:! Zo l · ^ itto ^v : c -> j.te! Zonsi ; .;! isn, so Ί, Ii im u'i '^ doclam, sbereici: dor · M-ttten nine ..acr ^ cnui c ^; η αιί: afun ^ an xjii Ποί; oen arises, which with άοι: ..! iIj "u.L'um or · .: \ LuI l or;, roiJ'en Ό .ii.; cl t.> / i i -:" i · and r; o'üit:; t ι bi:.; c "; not rO'Utz ^ -: jüvcu! litte an '■ / IiJt ^! ι ο ι in Ποτ · ¹ ^'"Ificl'un ¹ vf ^ emic ' ¹ · :: · α v / o ■■■ ■ - "'i', 00982A / 1098 q ^ ORIGINAL a * 10 Anspruc h ¹ Y Procedure according to - ^ nrjetzt 1 and 3 j el- · by r; ekennzeiehn ■ ->;;, C. -i ~ als Hatten der Eronen L \ o; e Hatten 7er; enclet -,. Earth, whose Llhnjsstu.be either au :; EiniachstVlben or r.ms double bars and at the Iv-ittenrands ^ er λιθγοcixn.itt the ianessti'.ne kiel: .or, preferably hr'Vb so croij ^: ils χ.ί middle I-Iattenbereicii i £ -j; and between 2 ücerdeckun ^ en ΐιχηΛ. steii-2-s allowance "treu'mi ir .ji ftegenseitigen Absi' _md-b-9 Wciistens I CO m -angeordnst." ground /;.it the 1-Iaßgabe that ^r ; -ie ZuIaron right and left of the Jcirc.-3 ^j 3k .--: ":.". on in the quarter points dos ^ chs - ?. "osi: -xn ^r les der übereclaii.gei; ..:. n- "are arranged. Alisprucli p Method riacli claims 1 and 4 _; through this. ^ eker: -. ":, ::? ielmet, d · .... between, the Überdeokun ^ en three,." 7isr and more Sul'i ^ -satrei-v ^ r. are provided and in the ^ selistels-c, ^ .slitais points v. ";'.-;," -se-rcs and arranged to the left of the overlaps w-sre-len. Claim_ 6 A method according to Ansprucli-i, d ^ dureli gekennaeiciinet, '■ ". -Ν.Λ the" chsabstände the Siil ^ sestr'-rlfsn of Z'. El _T} three, animal "xic Ihionen n-bar spacing of the had the first kattenla ^ e ents ^ reciion. 24/1090