WO2015044714A1 - Formwork system for the construction of i-shaped beams - Google Patents
Formwork system for the construction of i-shaped beams Download PDFInfo
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- WO2015044714A1 WO2015044714A1 PCT/IB2013/058893 IB2013058893W WO2015044714A1 WO 2015044714 A1 WO2015044714 A1 WO 2015044714A1 IB 2013058893 W IB2013058893 W IB 2013058893W WO 2015044714 A1 WO2015044714 A1 WO 2015044714A1
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- formwork
- formwork system
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- intermediate section
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
Definitions
- the present invention relates to a formwork system for the construction of I-shaped beams, which has a series of coupling elements that allow it to be assembled with commercially available formwork, in order to obtain the shape of the beam according to
- the structural design with a series of advantages, where the system is composed of four parts or elements that correspond to an upper piece of beam to shape the upper skate at the start and end of it, a piece of beam to give it forms the upper skate in the intermediate section, a beam piece to shape the lower skate in the intermediate section and a continuity piece that allows the transition between the sections and thus be able to form a single beam with the shape of the design, where the upper boot skate piece creates a T-shaped beam and the two upper and lower skate pieces of the intermediate section form an I-shaped beam, where these two beams are joined by means of the continuity piece.
- WO 96/037674 which relates to a method for the construction of columns, walls, beams or the like using concrete material and apparatus for carrying out said method, where the method comprises the steps of: a) locating and securing a base portion formwork on the top of the foundation means, each of said formwork panels is formed by a pair of opposing base panels that define the base surfaces of said columns, walls or the like that are formed; b) locating and securing the formwork of the upper part of said wall formwork in the upper part of said base formwork, each formwork of the upper part is formed by at least one pair of opposite parallel panels practically parallel defining the surfaces of the upper part of said wall to be formed.
- the method also comprises the steps of (i) providing a foundation, (ii) building the corners, (iii) building the base portions of the walls, between the corners, (iv) building the wall portions on top of the base portions of wall and between the corners, and (v) remove the reusable formwork.
- the beam described in this document does not correspond to a simple coupling or connection system for the construction of beams, but is simply a beam that has a defined shape and size that cannot be changed and does not conform to the user needs
- WO 201 1/015660 is related to a concrete formwork panel, which has a front part that offers a formwork side, which has the following characteristics: (a) the formwork panel is made of elements of the formwork panel connected to each other; (b) the formwork panel elements include a first edge beam and a second edge beam that extend along the two opposite edges of the formwork panels; (c) the formwork panel elements include padding elements, each of which extends from the first edge beams to the second edge beams; and (d) the filling elements are part of the support structure of the formwork panel and the front part of each are part of the formwork surface of the formwork panel.
- the construction system described in this above has the disadvantage that there is no specific formation of an I-beam, which can be used for the construction of bridges, but instead, the beams are Straight lines, which can only be used in certain applications that do not require much greater resistance, such as bridges and roads.
- Figure 1 corresponds to a perspective view of the formwork system of the present invention.
- Figures 2A - 2E correspond to the different views of the first piece that is part of the formwork system of Figure 1.
- Figures 3A-3E correspond to the different views of the second part that is part of the formwork system of Figure 1.
- Figures 4A-4E correspond to the different views of the third piece that is part of the formwork system of Figure 1.
- Figures 5A - 5D correspond to the different views of the continuity piece that is part of the formwork system of Figure 1.
- the formwork system for obtaining I-beams of the present invention comprises the following components or parts:
- the formwork system of the present invention allows the construction of an I-beam continuously, since it has parts or pieces that have different lengths of internal width, that is, where the part of the beam that It is manufactured with the first piece (1) has a width that is greater than the part of the beam that is manufactured with the second and third pieces (2, 3), taking into account the needs and final use of the beam.
- the system of the present invention has a series of holes (not shown) in each of its pieces (1, 2, 3, 4) that allows the insertion of a Dywidag bar of special steel that crosses across
- the formwork system which guarantees the position of the formwork at the time of concrete pouring, this generates homogeneity in the beam section throughout its travel, as it may be clear to a person skilled in the art.
- each of the pieces (1, 2, 3, 4) of the formwork system of the present invention are located on the surface and pass through said parts, where the bar that passes through them It is held by means of a fastening system (not shown) that is located on the outer surface of the part where the hole is located and allows the bar not to move, where this fastening system comprises nut and Dywidag type plate.
- the internal surface of the continuity piece (4) is flat and allows a connection between a wide part and a narrow part of the I-beam to be constructed to be created, since this continuity piece is dock directly with the first piece (1) in the wide part and with the second and third pieces (2, 3) in the narrowest part, thus allowing the resulting I-beam to have different sections continuously.
- the formwork system of the present invention as a whole is constructed in A36 or A50, HR or CR steel that is cut, shaped, assembled and welded according to the specifications of the end user.
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention relates to a formwork system for the construction of I-shaped beams, having a series of coupling elements that can be assembled with a commercially available formwork, in order to produce the shape of the beams according to the structural design, while providing a series of advantages. The system comprises four parts or elements, namely an upper beam piece for forming the upper flange at the root and end of same, a beam piece for forming the upper flange in the intermediate section, a beam piece for forming the lower flange in the intermediate section and a continuity piece that allows transition between the sections, thus forming a single beam in the designed shape, wherein the piece forming the upper beam root flange creates a T-shaped beam and the two upper and lower flange pieces of the intermediate section form an I-shaped beam, said two beams being joined by means of the continuity piece.
Description
SISTEMA DE ENCOFRADO PARA LA CONSTRUCCION DE VIGAS EN I FORMWORK SYSTEM FOR THE CONSTRUCTION OF BEAMS IN I
CAMPO TÉCNICO TECHNICAL FIELD
La presente invención se relaciona con un sistema de encofrado para la construcción de vigas en forma de I, el cual cuenta con una serie de elementos de acople que permiten ser ensambladas con encofrado disponible comercialmente, con el fin de obtener la forma de la viga según el diseño estructural, con una serie de ventajas, en donde el sistema se compone de cuatro partes o elementos que corresponden a una pieza superior de viga para dar forma al patín superior en el arranque y final de la misma, una pieza de viga para dar forma al patín superior en la sección intermedia , una pieza de viga para dar forma al patín inferior en la sección intermedia y una pieza de continuidad que permite la transición entre las secciones y así poder formar una única viga con la forma del diseño, en donde la pieza del patín superior de arranque crea una viga en forma de T y las dos piezas de patín superior e inferior de la sección intermedia forman un viga con forma de I, donde estas dos vigas se unen por medio de la pieza de continuidad. The present invention relates to a formwork system for the construction of I-shaped beams, which has a series of coupling elements that allow it to be assembled with commercially available formwork, in order to obtain the shape of the beam according to The structural design, with a series of advantages, where the system is composed of four parts or elements that correspond to an upper piece of beam to shape the upper skate at the start and end of it, a piece of beam to give it forms the upper skate in the intermediate section, a beam piece to shape the lower skate in the intermediate section and a continuity piece that allows the transition between the sections and thus be able to form a single beam with the shape of the design, where the upper boot skate piece creates a T-shaped beam and the two upper and lower skate pieces of the intermediate section form an I-shaped beam, where these two beams are joined by means of the continuity piece.
ANTECEDENTES DE LA INVENCION BACKGROUND OF THE INVENTION
En la actualidad, existe una serie de sistemas de encofrado para la construcción de vigas, especialmente las que son utilizadas en puentes o vías, donde estos sistemas tienen una forma definida por el fabricante y que debe ser ajustada a las necesidades del usuario final, donde en algunas oportunidades la estructura At present, there is a series of formwork systems for the construction of beams, especially those that are used in bridges or tracks, where these systems have a shape defined by the manufacturer and that must be adjusted to the needs of the end user, where sometimes the structure
i
puede verse comprometida, ya que no suministran la suficiente firmeza y resistencia debido a la forma plana. i It may be compromised, as they do not provide sufficient firmness and strength due to the flat shape.
Así las cosas, en el estado del arte existe una pluralidad de divulgaciones relacionadas con sistemas de encofrado para obtener vigas, dentro de los cuales se encuentra el documento WO 96/037674 que se relaciona con un método para la construcción de columnas, paredes, vigas o similares utilizando material concreto y aparatos para llevar a cabo dicho método, donde el método comprende los pasos de: a) ubicar y asegurar un encofrado de porción base en la parte superior de los medios de cimientos, cada uno de dichos paneles de encofrado está conformado por un par de paneles base opuestos que definen las superficies de base de dichas columnas, paredes o similares que se forman; b) ubicar y asegurar el encofrado de la parte superior de dicho encofrado de pared en la parte superior de dicho encofrado de base, cada encofrado de parte superior está conformado por al menos un par de paneles superiores opuestos prácticamente paralelos que definen las superficies de la parte superior de dicha pared a formar. El método también comprende los pasos de (i) proporcionar un cimiento, (ii) construir las esquinas, (iii) construir las porciones base de las paredes, entre las esquinas, (iv) construir las porciones de pared encima de las porciones base de pared y entre las esquinas, y (v) retirar el encofrado reutilizable. Thus, in the state of the art there is a plurality of disclosures related to formwork systems to obtain beams, within which is WO 96/037674 which relates to a method for the construction of columns, walls, beams or the like using concrete material and apparatus for carrying out said method, where the method comprises the steps of: a) locating and securing a base portion formwork on the top of the foundation means, each of said formwork panels is formed by a pair of opposing base panels that define the base surfaces of said columns, walls or the like that are formed; b) locating and securing the formwork of the upper part of said wall formwork in the upper part of said base formwork, each formwork of the upper part is formed by at least one pair of opposite parallel panels practically parallel defining the surfaces of the upper part of said wall to be formed. The method also comprises the steps of (i) providing a foundation, (ii) building the corners, (iii) building the base portions of the walls, between the corners, (iv) building the wall portions on top of the base portions of wall and between the corners, and (v) remove the reusable formwork.
Ahora bien, también se encuentra la solicitud de patente internacional WO 2007/060702 que divulga una viga que se utiliza para la construcción de encofrados de estructuras horizontales de hormigón armado en la construcción,
para suelos de por ejemplo, balcones, techos en voladizo, bóveda de pisos, caídas de rayos, enjuague vigas etc., donde dicha viga está hecha de material plástico (polímeros y/o resina sintética). However, there is also the international patent application WO 2007/060702 that discloses a beam that is used for the construction of formwork of horizontal reinforced concrete structures in construction, for floors of, for example, balconies, cantilevered ceilings, floor vaults, lightning strikes, rinsing beams etc., where said beam is made of plastic material (polymers and / or synthetic resin).
Sin embargo, la viga descrita en este documento no corresponde a un sistema simple de acople o de conexión para la construcción de vigas, sino que simplemente es una viga que tiene una forma y tamaño definidos que no pueden ser cambiados y no se ajustan a las necesidades del usuario. However, the beam described in this document does not correspond to a simple coupling or connection system for the construction of beams, but is simply a beam that has a defined shape and size that cannot be changed and does not conform to the user needs
Finalmente, el documento WO 201 1/015660 está relacionado con un panel de encofrado de concreto, que cuenta con una parte delantera que ofrece un lado de encofrado, que tiene las siguientes características: (a) el panel de encofrado está hecho de elementos del panel de encofrado conectados entre sí; (b) los elementos de panel de encofrado incluyen una primera viga de borde y una segunda viga de borde que se extienden a lo largo de los dos bordes opuestos de los paneles de encofrado; (c) los elementos de panel de encofrado incluyen elementos de relleno, cada uno de éstos se extiende desde las primeras vigas de borde hasta las segundas vigas de borde; y (d) los elementos de relleno son parte de la estructura de soporte del panel de encofrado y la parte frontal de cada uno son parte de la superficie de encofrado del panel de encofrado. Finally, WO 201 1/015660 is related to a concrete formwork panel, which has a front part that offers a formwork side, which has the following characteristics: (a) the formwork panel is made of elements of the formwork panel connected to each other; (b) the formwork panel elements include a first edge beam and a second edge beam that extend along the two opposite edges of the formwork panels; (c) the formwork panel elements include padding elements, each of which extends from the first edge beams to the second edge beams; and (d) the filling elements are part of the support structure of the formwork panel and the front part of each are part of the formwork surface of the formwork panel.
No obstante, el sistema de construcción descrito en esta anterioridad presenta la desventaja que no hay una formación específica de una viga en I, que puede ser utilizada para la construcción de puentes, sino que por el contrario, las vigas son
rectas, las cuales sólo pueden ser utilizas en ciertas aplicaciones que no requieren una resistencia mucho mayor, como es el caso de puentes y carreteras. However, the construction system described in this above has the disadvantage that there is no specific formation of an I-beam, which can be used for the construction of bridges, but instead, the beams are Straight lines, which can only be used in certain applications that do not require much greater resistance, such as bridges and roads.
De acuerdo con lo anterior, es evidente para una persona experta en la materia que existe una necesidad en el estado del arte para diseñar e implementar un sistema de encofrado para la fabricación de vigas, el cual permita obtener una viga con una forma que pueda tener una resistencia superior a las que se obtienen con los sistemas existentes en el estado del arte, donde estas vigas puedan ser utilizadas en la construcción de puentes y carreteras, en donde el sistema de encofrado sea fácil de utilizar, reduzca los costos de producción y además se pueda acoplar a los sistemas existentes actualmente, con el fin de mejorarlos y así obtener una viga que tenga una resistencia superior sin incurrir en gastos elevados, al tiempo que permita que la viga final pueda tener diferentes formas, es decir, con un solo sistema de encofrado se pueda tener una viga final con tamaños diferentes sin realizar acoples que puedan comprometer la estructura. In accordance with the above, it is evident to a person skilled in the art that there is a need in the state of the art to design and implement a formwork system for the manufacture of beams, which allows obtaining a beam with a shape that may have a resistance superior to those obtained with existing systems in the state of the art, where these beams can be used in the construction of bridges and roads, where the formwork system is easy to use, reduce production costs and also It can be attached to existing systems, in order to improve them and thus obtain a beam that has a higher resistance without incurring high costs, while allowing the final beam to have different shapes, that is, with a single system formwork can have a final beam with different sizes without making attachments that can compromise the structure.
BREVE DESCRIPCIÓN DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
La figura 1 corresponde a una vista en perspectiva del sistema de encofrado de la presente invención. Figure 1 corresponds to a perspective view of the formwork system of the present invention.
Las figuras 2A - 2E corresponde a las diferentes vistas de la primera pieza que forma parte del sistema de encofrado de la figura 1 .
Las figuras 3A - 3E corresponde a las diferentes vistas de la segunda pieza que forma parte del sistema de encofrado de la figura 1 . Figures 2A - 2E correspond to the different views of the first piece that is part of the formwork system of Figure 1. Figures 3A-3E correspond to the different views of the second part that is part of the formwork system of Figure 1.
Las figuras 4A - 4E corresponde a las diferentes vistas de la tercera pieza que forma parte del sistema de encofrado de la figura 1 . Figures 4A-4E correspond to the different views of the third piece that is part of the formwork system of Figure 1.
Las figuras 5A - 5D corresponde a las diferentes vistas de la pieza de continuidad que forma parte del sistema de encofrado de la figura 1 . Figures 5A - 5D correspond to the different views of the continuity piece that is part of the formwork system of Figure 1.
DESCRIPCIÓN DETALLADA DE LA INVENCIÓN DETAILED DESCRIPTION OF THE INVENTION
El sistema de encofrado para la obtención de vigas en I de la presente invención comprende los siguientes componentes o partes: The formwork system for obtaining I-beams of the present invention comprises the following components or parts:
• Una primera pieza (1 ) que corresponde al patín superior del arranque y final de la viga, parte más ancha de la viga en I; • A first piece (1) corresponding to the upper boot and end beam of the beam, the widest part of the beam in I;
• Una segunda pieza (2) que corresponde al patín superior en la sección intermedia de la viga, parte más angosta de la viga en I; • A second piece (2) corresponding to the upper skate in the intermediate section of the beam, the narrowest part of the beam in I;
• Una tercera pieza (3) que corresponde al patín inferior en la sección intermedia de la viga, parte más angosta de la viga en I; y • A third piece (3) corresponding to the bottom skate in the intermediate section of the beam, narrower part of the beam in I; Y
• Una pieza de continuidad (4) que permite la transición entre las 2 geometrías de la viga.
Así las cosas, el sistema de encofrado de la presente invención permite la construcción de una viga en I de forma continua, toda vez que cuenta con partes o piezas que tienen diferente longitud de ancho interno, es decir, donde la parte de la viga que se fabrica con la primera pieza (1 ) tiene un ancho que es superior a la parte de la viga que se fabrica con la segunda y tercera piezas (2, 3), teniendo en cuenta las necesidades y el uso final de la viga. • A continuity piece (4) that allows the transition between the 2 geometries of the beam. Thus, the formwork system of the present invention allows the construction of an I-beam continuously, since it has parts or pieces that have different lengths of internal width, that is, where the part of the beam that It is manufactured with the first piece (1) has a width that is greater than the part of the beam that is manufactured with the second and third pieces (2, 3), taking into account the needs and final use of the beam.
Adicionalmente, el sistema de la presente invención cuenta con una serie de agujeros (no mostrados) en cada una de sus piezas (1 , 2, 3, 4) que permite la inserción de una barra tipo Dywidag de acero especial que atraviesa a lo ancho el sistema de encofrado, la cual garantiza la posición del encofrado al momento del vertido del concreto, esto genera homogeneidad en la sección de la viga en todo su recorrido, tal como puede ser claro para un experto en la materia. Additionally, the system of the present invention has a series of holes (not shown) in each of its pieces (1, 2, 3, 4) that allows the insertion of a Dywidag bar of special steel that crosses across The formwork system, which guarantees the position of the formwork at the time of concrete pouring, this generates homogeneity in the beam section throughout its travel, as it may be clear to a person skilled in the art.
De este modo, los agujeros en cada una de las piezas (1 , 2, 3, 4) del sistema de encofrado de la presente invención se ubican en la superficie y atraviesan dichas piezas, donde la barra que se pasa a través de los mismos se sujeta por medio de un sistema de sujeción (no mostrado) que se ubica en la superficie externa de la pieza donde se encuentra el agujero y permite que la barra no se mueva, en donde este sistema de sujeción comprende tuerca y placa tipo Dywidag. Thus, the holes in each of the pieces (1, 2, 3, 4) of the formwork system of the present invention are located on the surface and pass through said parts, where the bar that passes through them It is held by means of a fastening system (not shown) that is located on the outer surface of the part where the hole is located and allows the bar not to move, where this fastening system comprises nut and Dywidag type plate.
Así mismo, la superficie interna de la pieza de continuidad (4) es plana y permite que se pueda crear una conexión entre una parte ancha y una parte angosta de la viga en I que se desea construir, toda vez que esta pieza de continuidad se acopla
directamente con la primera pieza (1 ) en la parte ancha y con la segunda y tercera piezas (2, 3) en la parte más angosta, permitiendo así que la viga en I resultante, tenga diferentes secciones de forma continua. Likewise, the internal surface of the continuity piece (4) is flat and allows a connection between a wide part and a narrow part of the I-beam to be constructed to be created, since this continuity piece is dock directly with the first piece (1) in the wide part and with the second and third pieces (2, 3) in the narrowest part, thus allowing the resulting I-beam to have different sections continuously.
En una modalidad preferida de la invención, el sistema de encofrado de la presente invención en su totalidad se construye en acero A36 o A50, HR o CR que se corta, modela, ensambla y suelda según las especificaciones del usuario final.
In a preferred embodiment of the invention, the formwork system of the present invention as a whole is constructed in A36 or A50, HR or CR steel that is cut, shaped, assembled and welded according to the specifications of the end user.
Claims
1 . Un sistema de encofrado para la construcción de vigas en I, caracterizado porque comprende: one . A formwork system for the construction of I-beams, characterized in that it comprises:
• Una primera pieza (1 ) que corresponde al patín superior del arranque y final de la viga, parte más ancha de la viga en I; • A first piece (1) corresponding to the upper boot and end beam of the beam, the widest part of the beam in I;
• Una segunda pieza (2) que corresponde al patín superior en la sección intermedia de la viga, parte más angosta de la viga en I; • A second piece (2) corresponding to the upper skate in the intermediate section of the beam, the narrowest part of the beam in I;
• Una tercera pieza (3) que corresponde al patín inferior en la sección intermedia de la viga, parte más angosta de la viga en I; y • A third piece (3) corresponding to the bottom skate in the intermediate section of the beam, narrower part of the beam in I; Y
• Una pieza de continuidad (4) que permite la transición entre las 2 geometrías de la viga. • A continuity piece (4) that allows the transition between the 2 geometries of the beam.
2. El sistema de encofrado según la reivindicación 1 , caracterizado porque la parte de la viga que se fabrica con la primera pieza (1 ) tiene un ancho mayor a la parte de la viga que se fabrica con la segunda y tercera piezas (2, 3). 2. The formwork system according to claim 1, characterized in that the part of the beam that is manufactured with the first piece (1) has a width greater than the part of the beam that is manufactured with the second and third pieces (2, 3).
3. El sistema de encofrado según la reivindicación 1 , caracterizado porque cada una de las piezas (1 , 2, 3, 4) comprende una serie de agujeros para la inserción de barras metálicas, donde dichos agujeros se ubican en la superficie y atraviesan dichas piezas. 3. The formwork system according to claim 1, characterized in that each of the pieces (1, 2, 3, 4) comprises a series of holes for the insertion of metal bars, where said holes are located on the surface and pass through said pieces.
4. El sistema de encofrado según la reivindicación 3, caracterizado porque la varilla que pasa a través de los agujeros se sujeta por medio de un sistema de
sujeción ubicado en la superficie externa de la pieza donde se encuentra el agujero, en donde este sistema de sujeción comprende tuerca y placa tipo Dywidag 4. The formwork system according to claim 3, characterized in that the rod that passes through the holes is secured by means of a system of clamp located on the outer surface of the part where the hole is located, where this clamping system comprises nut and Dywidag type plate
5. El sistema de encofrado según la reivindicación 1 , caracterizado porque la superficie interna de la pieza de continuidad (4) es plana y crea la conexión entre una parte ancha y una parte angosta de la viga en I que se desea construir. 5. The formwork system according to claim 1, characterized in that the internal surface of the continuity piece (4) is flat and creates the connection between a wide part and a narrow part of the I-beam to be constructed.
6. El sistema de encofrado según cualquiera de las reivindicaciones anteriores, caracterizado porque el sistema de encofrado en su totalidad se construye de acero A36 o A50, HR o CR que se corta, modela, ensambla y suelda según las especificaciones del usuario final.
6. The formwork system according to any of the preceding claims, characterized in that the entire formwork system is constructed of A36 or A50, HR or CR steel that is cut, modeled, assembled and welded according to the specifications of the end user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2013/058893 WO2015044714A1 (en) | 2013-09-26 | 2013-09-26 | Formwork system for the construction of i-shaped beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2013/058893 WO2015044714A1 (en) | 2013-09-26 | 2013-09-26 | Formwork system for the construction of i-shaped beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015044714A1 true WO2015044714A1 (en) | 2015-04-02 |
Family
ID=52742151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2013/058893 WO2015044714A1 (en) | 2013-09-26 | 2013-09-26 | Formwork system for the construction of i-shaped beams |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2015044714A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863262A (en) * | 2016-06-14 | 2016-08-17 | 广东合迪科技股份有限公司 | Beam-bottom formwork component |
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| US2874442A (en) * | 1955-06-13 | 1959-02-24 | Cemenstone Corp | Apparatus for making concrete structural shapes |
| GB1202320A (en) * | 1967-07-18 | 1970-08-12 | Philipp Schreck | Method of manufacturing prestressed concrete beams, and apparatus for the performance of the method |
| US5219473A (en) * | 1990-03-27 | 1993-06-15 | Sandwith Stanley R | Adjustable concrete formwork system |
| CN201169916Y (en) * | 2008-03-26 | 2008-12-24 | 中铁十三局集团第四工程有限公司 | T girder moulding board capable of adjusting wing edge falling gradient |
| KR20100018410A (en) * | 2008-08-06 | 2010-02-17 | 주식회사 에이스이엔씨 | Concrete forms for an i section girder |
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2013
- 2013-09-26 WO PCT/IB2013/058893 patent/WO2015044714A1/en active Application Filing
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863262A (en) * | 2016-06-14 | 2016-08-17 | 广东合迪科技股份有限公司 | Beam-bottom formwork component |
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