ES2307357A1 - Stirrups for the construction of rebar reinforcements for reinforced concrete beams - Google Patents

Stirrups for the construction of rebar reinforcements for reinforced concrete beams Download PDF

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Publication number
ES2307357A1
ES2307357A1 ES200502118A ES200502118A ES2307357A1 ES 2307357 A1 ES2307357 A1 ES 2307357A1 ES 200502118 A ES200502118 A ES 200502118A ES 200502118 A ES200502118 A ES 200502118A ES 2307357 A1 ES2307357 A1 ES 2307357A1
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Prior art keywords
stirrups
rounds
reinforced concrete
stirrup
construction
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Granted
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ES200502118A
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Spanish (es)
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ES2307357B1 (en
Inventor
Olatz Isabel Merino Garay
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Megaray SL
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Megaray SL
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Priority to ES200502118A priority Critical patent/ES2307357B1/en
Priority to EP06380232A priority patent/EP1760218A3/en
Publication of ES2307357A1 publication Critical patent/ES2307357A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18—Spacers of metal or substantially of metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

This invention consists of constructing the stirrups in a way that the top horizontal bar is shaped with high and low sections so that the top longitudinal round bars are placed on the high sections and the top of the negative round bars are supported on the low sections. In this manner, the vertical branches of the stirrups are anchored on the top longitudinal round bars above the round bars that cover the negative moments, meeting the conditions imposed by the shear and tangential stress calculation.

Description

Estribos para la construcción de armaduras de ferralla para vigas de hormigón armado.Stirrups for the construction of reinforcements ferralla for reinforced concrete beams.

Objeto de la invenciónObject of the invention

La presente memoria descriptiva se refiere a una solicitud correspondiente a estribos para la construcción de armaduras de ferralla para vigas de hormigón armado, que permite colocar los redondos negativos sobre la barra horizontal superior del estribo.The present specification refers to a application corresponding to stirrups for the construction of iron reinforcement for reinforced concrete beams, which allows place the negative rounds on the top horizontal bar of the stirrup.

Campo de la invenciónField of the Invention

Esta invención tiene su aplicación dentro de la industria de la construcción, y más concretamente en la fabricación de armaduras de ferralla para vigas de hormigón armado.This invention has its application within the construction industry, and more specifically in manufacturing of iron reinforcement for reinforced concrete beams.

Antecedentes de la invenciónBackground of the invention

No conocemos antecedentes de ésta invención, ya que siempre se ha escrito en los manuales de cálculo y construcción de armaduras para vigas de hormigón armado, que los redondos para absorber momentos negativos deben estar dentro de los estribos.We do not know background of this invention, since which has always been written in the calculation and construction manuals of reinforcements for reinforced concrete beams, which the round ones for absorb negative moments must be within the stirrups.

Descripción de la invenciónDescription of the invention

Los elementos habituales que componen una armadura par vigas de hormigón armado son: los redondos longitudinales superiores 1 y 2; los redondos longitudinales inferiores 3 y 4; los estribos 5; los redondos de refuerzo inferiores 6 y 7 y los redondos para absorber los momentos negativos 8 y 9 todo ello se ve en la figura 1. El dibujo que presentamos tiene un carácter genérico y no pretende ser exhaustivo. Cuando se colocan las armaduras construidas según este modelo en la obras, para posicionar los redondos negativos en el lugar que el cálculo determina, debemos desplazarlos hasta colocarlos en la parte de debajo de la rama transversal horizontal superior de los estribos.The usual elements that make up a reinforcement for reinforced concrete beams are: the round ones upper longitudinals 1 and 2; the longitudinal rounds lower 3 and 4; stirrups 5; round reinforcement bottom 6 and 7 and the round ones to absorb the negative moments  8 and 9 all of this is seen in figure 1. The drawing we present It has a generic character and is not intended to be exhaustive. When put the armor built according to this model in the works, to position the negative rounds in the place that the calculation determine, we must move them to place them in the part of below the upper horizontal transverse branch of the stirrups

Esta forma de proceder es muy laboriosa por la dificultad que existe para desplazar las armaduras de negativos entre las armaduras de los pilares y colocarlas en el interior de las armaduras generalmente de dos vigas. Debemos tener en cuenta que se trata de varias barras de acero, rígidas y de una longitud considerable.This way of proceeding is very laborious because of the difficulty in displacing negative armor between the reinforcements of the pillars and place them inside the armor usually of two beams. We must take into account which is several steel bars, rigid and of a length considerable.

Esta invención propone construir los estribos de forma que la barra horizontal superior tenga una forma con partes altas y bajas para que en las partes altas se coloquen los redondos longitudinales superiores y en las partes bajas se apoyen los redondos negativos por su parte superior. De esta forma, las ramas verticales de los estribos están ancladas en los redondos longitudinales superiores por encima de los redondos que cubren los momentos negativos cumpliendo con las condiciones que el cálculo impone para esfuerzos cortantes y rasantes. Las barras de los negativos se pueden colocar por encima de la parte horizontal de la armadura transversal tal y como se ve en la figura 2, y este sistema abarata el coste de la armadura en su fabricación.This invention proposes to build the stirrups of so that the upper horizontal bar has a shape with parts high and low so that the round ones are placed in the high parts upper longitudinal and lower parts support the round negatives at the top. In this way, the branches stirrups are anchored in the round ones upper longitudinals above the rounds that cover the negative moments complying with the conditions that the calculation imposes for shear and flush efforts. The bars of the negatives can be placed above the horizontal part of the transverse armor as seen in figure 2, and this system lowers the cost of armor in its manufacture.

Esta memoria se refiere a una solicitud de patente de invención para la construcción de armaduras de ferralla para vigas de hormigón armado, con un tipo de estribos que permite colocar los redondos negativos apoyados en la parte superior de la barra horizontal de la armadura transversal, cumpliendo al mismo tiempo con las reglas de cálculo de hormigón armado en lo que al cálculo de esfuerzos cortante y rasante se refiere. De esta forma, se facilita la colocación en obra de los redondos para absorber los momentos negativos y también la construcción en fábrica de las armaduras correspondientes.This report refers to a request for invention patent for the construction of iron reinforcement for reinforced concrete beams, with a type of stirrups that allows place the negative rounds supported on the top of the horizontal bar of the transverse reinforcement, complying with it time with the rules of calculation of reinforced concrete as far as Shear and flush stress calculation is concerned. Thus, the placement of the rounds is facilitated to absorb the negative moments and also the factory construction of the corresponding armors.

Descripción de los dibujosDescription of the drawings

Para completar la descripción que se está realizando con objeto de ayudar a una mejor comprensión de las características de la invención, se acompaña a la presente memoria descriptiva, como parte integrante de la misma, un juego de planos en el cual, con carácter ilustrativo y no limitativo, se representa lo siguiente:To complete the description that is being performing in order to help a better understanding of the characteristics of the invention, is attached herein descriptive, as an integral part of it, a set of planes in which, for illustrative and non-limiting nature, it is represented the next:

La figura 1.- Muestra una sección de la armadura con el estribo convencional de dos ramas.Figure 1.- Shows a section of the armor with the conventional stirrup of two branches.

La figura 2.- Muestra una sección de la armadura con el estribo que se propone.Figure 2.- Shows a section of the armor with the stirrup that is proposed.

La figura 3.- Muestra una sección de la armadura con otra variante del estribo que se propone.Figure 3.- Shows a section of the armor with another variant of the stirrup that is proposed.

La figura 4.- Muestra una sección de una armadura con estribo convencional de tres ramas verticales, y en esta figura los redondos para absorber los momentos negativos son el 8 y 9.Figure 4.- Shows a section of a Conventional stirrup reinforcement with three vertical branches, and in this figure the rounds to absorb the negative moments are the 8 and 9.

La figura 5.- Muestra una sección de la armadura con el estribo que se propone, para sustituir al de la figura 4.Figure 5.- Shows a section of the armor with the stirrup that is proposed, to replace the one in the figure Four.

La figura 6.- Muestra una sección de una armadura con el estribo convencional de cuatro ramas. En esta figura los redondos para absorber los momentos negativos son los números 8 y 9.Figure 6.- Shows a section of a Armor with the conventional four-leg stirrup. In this round figures to absorb the negative moments are the numbers 8 and 9.

La figura 7.- Muestra una sección de la armadura con el estribo que se propone, para sustituir a la de la figura 6.Figure 7.- Shows a section of the armor with the stirrup that is proposed, to replace the one in the figure 6.

Como la variedad en forma y dimensiones, de los estribos es ilimitada, los dibujos antes señalados y la realización preferente de la invención se refieren a los estribos mas usados en la edificación. Debemos tener en cuenta que la novedad consiste en que la barra superior de los estribos tenga partes altas y bajas, es decir, que sea una línea quebrada.As the variety in shape and dimensions, of the stirrups is unlimited, the drawings outlined above and the realization Preferred of the invention refer to the stirrups most used in the building. We must bear in mind that the novelty consists in that the top bar of the stirrups has high and low parts, that is, it is a broken line.

Realización preferente de la invenciónPreferred Embodiment of the Invention

A la vista de estas figuras, puede observarse como esta invención se aplica en todas las estructuras de hormigón armado.In view of these figures, it can be seen as this invention is applied in all concrete structures armed.

Tal y como se ha dicho, en la figura 1 se ve un estribo convencional (5) con los redondos longitudinales superiores (1 y 2), los redondos longitudinales inferiores (3 y 4), los redondos de refuerzo interiores (6 y 7), y los redondos para absorber los momentos negativos (8 y 9), situados éstos por el interior del estribo como es convencional.As stated, in Figure 1 you see a conventional stirrup (5) with the upper longitudinal rounds (1 and 2), the lower longitudinal rounds (3 and 4), the round inner reinforcement (6 and 7), and round for absorb the negative moments (8 and 9), located these by the stirrup inside as is conventional.

Sin embargo, en la figura 2 se muestra una solución en la que el estribo (5) presenta sus ramas superiores con un tramo de menor cota en cuya parte externa quedan situados precisamente los redondos para absorber los momentos negativos (8 y 9), manteniéndose en el interior los redondos longitudinales superiores (1 y 2), los redondos longitudinales inferiores (3 y 4) y los redondos de refuerzo (6 y 7).However, Figure 2 shows a solution in which the stirrup (5) has its upper branches with a section of lower elevation in whose external part they are located precisely the round ones to absorb the negative moments (8 and 9), keeping the longitudinal round inside upper (1 and 2), the lower longitudinal rounds (3 and 4) and reinforcement rounds (6 and 7).

Asimismo, en la figura 3 se muestra otra alternativa del estribo (5) en el que el redondo longitudinal superior (1) queda situado por fuera, pero siempre a un nivel superior al de los redondos para absorber los momentos negativos (8 y 9).Also, another figure is shown in Figure 3 stirrup alternative (5) in which the longitudinal round upper (1) is located on the outside, but always at a level superior to the round ones to absorb the negative moments (8 and 9).

En la figura 4 se deja ver un estribo (5') de tres ramas verticales, con los redondos longitudinales superiores (1, 1' y 2), los redondos longitudinales inferiores (3, 3', 4, 6 y 7), estando, como es convencional, los redondos negativos (8 y 9) situados por el interior de la rama superior del estribo (5').Figure 4 shows a stirrup (5 ') of three vertical branches, with the upper longitudinal rounds (1, 1 'and 2), the lower longitudinal rounds (3, 3', 4, 6 and 7), being, as is conventional, the negative rounds (8 and 9) located inside the upper branch of the stirrup (5 ').

En la figura 5 se muestra sin embargo un estribo (5') que según la invención presenta su rama superior con un tramo de menor cota en el que quedan situados precisamente y por el exterior los redondos para absorber los momentos negativos (8 y 9), manteniéndose el resto de redondos al igual que en la figura 4.However, a stirrup is shown in Figure 5 (5 ') which according to the invention has its upper branch with a section of lower level in which they are located precisely and by the outer round ones to absorb negative moments (8 and 9), keeping the rest of rounds as in figure 4.

En la figura 6 se deja ver otro estribo (5'') de cuatro ramas verticales con los redondos longitudinales superiores (1, 2, 2' y 2''), los redondos longitudinales inferiores (3, 3', 3'', 6 y 7), los redondos para absorber los momentos negativos (8 y 9), situados también por el interior de la rama superior del estribo (5'').Figure 6 shows another stirrup (5 '') of four vertical branches with the upper longitudinal rounds (1, 2, 2 'and 2' '), the lower longitudinal rounds (3, 3', 3``, 6 and 7), the round ones to absorb the negative moments (8 and 9), also located inside the upper branch of the stirrup (5``).

Sin embargo, según la invención, en la figura 7 se muestra un estribo (5'') de cuatro ramas verticales en donde los redondos para absorber los momentos negativos (8 y 9) quedan situados en un tramo de menor cota de la rama superior del propio estribo (5''), manteniéndose el resto de redondos de forma exactamente igual a como se muestra en la figura 6.However, according to the invention, in Figure 7 a stirrup (5 '') of four vertical branches is shown where the round to absorb the negative moments (8 and 9) remain located in a section of lower elevation of the upper branch of the own stirrup (5 ''), keeping the rest round in shape exactly the same as shown in figure 6.

De acuerdo con estas características la forma de proceder en las estructuras de hormigón armado es como sigue:According to these characteristics the way of Proceed in reinforced concrete structures is as follows:

Se coloca el encofrado de las vigas, sobre él se apoyan las armaduras de las vigas y después se apoyan los redondos de los negativos (8 y 9) sobre la parte superior de las armaduras en lugar de tener que introducirlos primero en una armadura, correrlo dentro de ella hasta el fin de los negativos y después desplazarlos por el interior de la otra armadura hasta la posición que el cálculo determina, terminando con la tarea de amarrarlos o soldarlos uno a uno por debajo de la barra horizontal superior de los estribos.The formwork of the beams is placed, on it support the reinforcement of the beams and then support the rounds of the negatives (8 and 9) on the top of the armor instead of having to introduce them first in armor, run it inside her until the end of the negatives and then move them inside the other armor to the position that the calculation determines, ending with the task of mooring them or weld them one by one below the upper horizontal bar of temper.

No se considera necesario hacer más extensa esta descripción para que cualquier experto en la materia comprenda el alcance de la invención y las ventajas que de la misma se derivan.It is not considered necessary to extend this description so that any subject matter expert understands the scope of the invention and the advantages thereof drift

Los materiales, forma, tamaño y disposición de los elementos serán susceptibles de variación, siempre y cuando ello no suponga una alteración a la esencialidad de la invención.The materials, shape, size and layout of the elements will be susceptible to variation, as long as this does not imply an alteration to the essentiality of the invention.

Los términos en que se ha descrito esta memoria deberán ser tomados siempre con carácter amplio y no limitativo.The terms in which this report has been described they should always be taken broadly and not limitative.

Claims (2)

1. Estribos para la construcción de armaduras de ferralla de hormigón armado, que estando constituidos por los elementos (5) ó (5') ó (5''), con una, dos o tres ramas verticales, e incluyendo en su interior los correspondientes redondos longitudinales superiores (1 y 2); (1, 1' y 2); y (1, 2, 2' y 2''), así como los redondos longitudinales inferiores (3, 4, 6 y 7), ó (3, 3', 4, 6 y 7), ó (3, 3', 3'', 4, 6 y 7), respectivamente, se caracteriza porque la rama superior del correspondiente estribo (5, 5' ó 5'') presenta un tramo de menor cota sobre el que se sitúan externamente los redondos para absorber los momentos negativos (8 y 9), uniéndose al respectivo estribo mediante soldadura o cualquier otro sistema de fijación.1. Stirrups for the construction of reinforced concrete ferrule reinforcements, which being constituted by the elements (5) or (5 ') or (5''), with one, two or three vertical branches, and including inside them corresponding upper longitudinal rounds (1 and 2); (1, 1 'and 2); and (1, 2, 2 'and 2''), as well as the lower longitudinal rounds (3, 4, 6 and 7), or (3, 3', 4, 6 and 7), or (3, 3 ' , 3 '', 4, 6 and 7), respectively, is characterized in that the upper branch of the corresponding stirrup (5, 5 'or 5'') has a smaller section on which the rounds are located externally to absorb the negative moments (8 and 9), joining the respective stirrup by welding or any other fixing system. 2. Estribos para la construcción de armaduras de ferralla de hormigón armado, según reivindicación 1ª, caracterizados porque los redondos para absorber los momentos negativos (8 y 9) se colocan directamente apoyados sobre la rama superior de los estribos (5, 5' ó 5''), sin ningún otro tipo de operación.2. Stirrups for the construction of reinforced concrete ferrule reinforcement, according to claim 1, characterized in that the round ones to absorb the negative moments (8 and 9) are placed directly supported on the upper branch of the stirrups (5, 5 'or 5 ''), without any other type of operation.
ES200502118A 2005-08-29 2005-08-29 ESTRIBOS FOR THE CONSTRUCTION OF FERRALLA ARMORS FOR BEAMS OF ARMED CONCRETE. Active ES2307357B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES200502118A ES2307357B1 (en) 2005-08-29 2005-08-29 ESTRIBOS FOR THE CONSTRUCTION OF FERRALLA ARMORS FOR BEAMS OF ARMED CONCRETE.
EP06380232A EP1760218A3 (en) 2005-08-29 2006-08-23 Stirrups for the construction of rebar reinforcements for reinforced concrete beams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200502118A ES2307357B1 (en) 2005-08-29 2005-08-29 ESTRIBOS FOR THE CONSTRUCTION OF FERRALLA ARMORS FOR BEAMS OF ARMED CONCRETE.

Publications (2)

Publication Number Publication Date
ES2307357A1 true ES2307357A1 (en) 2008-11-16
ES2307357B1 ES2307357B1 (en) 2009-10-08

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EP (1) EP1760218A3 (en)
ES (1) ES2307357B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117365015A (en) * 2023-09-11 2024-01-09 上海宝冶集团有限公司 Connecting structure of rear longitudinal ribs and downwarping stirrups on upper part of prefabricated superposed beam
CN117365014A (en) * 2023-09-11 2024-01-09 上海宝冶集团有限公司 Connecting method of upper longitudinal bars and closed stirrups of prefabricated superposed beam

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101839042B (en) * 2010-05-27 2012-07-25 大连阿尔滨集团有限公司 Novel barricade rib used for negative bending moment rib
CN101956461B (en) * 2010-10-15 2011-10-05 河海大学 Steel bar arrangement method and steel bar arrangement device for reinforced concrete deep beam

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499984A (en) * 1923-01-29 1924-07-01 Stephen L Heidrich Support
GB445937A (en) * 1934-10-18 1936-04-20 Joseph Leslie Musgrave Improvements relating to reinforced concrete floors, roofs and like structures
GB595378A (en) * 1945-05-07 1947-12-03 Donovan Henry Lee Improvements in reinforced concrete beams and columns
ES208786Y (en) * 1970-05-12 1976-07-16 Dipl. Ing. Georgi Oroschakoff A SELF-SUSTAINING ARMOR.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1344294A (en) * 1970-05-12 1974-01-16 Oroschakoff G Reinforcement for reinforced concrete structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499984A (en) * 1923-01-29 1924-07-01 Stephen L Heidrich Support
GB445937A (en) * 1934-10-18 1936-04-20 Joseph Leslie Musgrave Improvements relating to reinforced concrete floors, roofs and like structures
GB595378A (en) * 1945-05-07 1947-12-03 Donovan Henry Lee Improvements in reinforced concrete beams and columns
ES208786Y (en) * 1970-05-12 1976-07-16 Dipl. Ing. Georgi Oroschakoff A SELF-SUSTAINING ARMOR.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117365015A (en) * 2023-09-11 2024-01-09 上海宝冶集团有限公司 Connecting structure of rear longitudinal ribs and downwarping stirrups on upper part of prefabricated superposed beam
CN117365014A (en) * 2023-09-11 2024-01-09 上海宝冶集团有限公司 Connecting method of upper longitudinal bars and closed stirrups of prefabricated superposed beam

Also Published As

Publication number Publication date
EP1760218A3 (en) 2009-01-07
ES2307357B1 (en) 2009-10-08
EP1760218A2 (en) 2007-03-07

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