EP2402531A2 - Prefabricated concrete staircase with modular stair carriage - Google Patents

Prefabricated concrete staircase with modular stair carriage Download PDF

Info

Publication number
EP2402531A2
EP2402531A2 EP11305343A EP11305343A EP2402531A2 EP 2402531 A2 EP2402531 A2 EP 2402531A2 EP 11305343 A EP11305343 A EP 11305343A EP 11305343 A EP11305343 A EP 11305343A EP 2402531 A2 EP2402531 A2 EP 2402531A2
Authority
EP
European Patent Office
Prior art keywords
rack
staircase
prefabricated concrete
elements
lateral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11305343A
Other languages
German (de)
French (fr)
Other versions
EP2402531A3 (en
Inventor
Denis Mourier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
P B M Groupe
Original Assignee
P B M Groupe
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by P B M Groupe filed Critical P B M Groupe
Publication of EP2402531A2 publication Critical patent/EP2402531A2/en
Publication of EP2402531A3 publication Critical patent/EP2402531A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
    • E04F11/025—Stairways having stringers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
    • E04F11/025—Stairways having stringers
    • E04F11/028—Stairways having stringers having a central stringer
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/104—Treads
    • E04F11/116—Treads of stone, concrete or like material or with an upper layer of stone or stone like material, e.g. ceramics, concrete; of glass or with an upper layer of glass
    • 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
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/062—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for stairs or steps

Definitions

  • the present invention relates to a prefabricated concrete staircase, straight or quarter turn type.
  • Prefabricated concrete staircases consisting essentially of modular elements, are commonly used to the extent that they are easily and quickly put in place, and inexpensive.
  • the document EP 0 126 681 describes a prefabricated concrete staircase consisting of at least one silt and previously manufactured staircase elements.
  • the silt is provided with transverse notches intended to anchor the walking elements.
  • the latter consist of a horizontal wall and a vertical wall thus forming the step and the upper riser.
  • the document FR 2 801 619 describes another type of prefabricated concrete staircase.
  • the walking elements are monobloc and include a step, a riser and two silts. The assembly of these monoblocks constitutes the staircase.
  • the document FR 2 801 620 describes a straight prefabricated concrete staircase with no silt.
  • the implementation of this staircase requires the installation of a bastaing according to the angle of inclination of the staircase and on which the prefabricated step elements are placed one after the other.
  • the walking elements ensure both the support and the cohesion of the staircase. When several of them are positioned on the bastaing, they have below the tread a structure defining a linear and continuous cavity.
  • a reinforcement is introduced into the linear cavity located below the tread of the walking elements. This cavity is then filled with concrete.
  • the document JP 11050625 also describes a straight concrete staircase comprising a rack.
  • the rack comprises two lateral parts interconnected by a lower part. It is actually made of several elements, each element extending unitarily along the entire length (or height) of the staircase.
  • the document DE 1,039,212 describes a straight staircase made of concrete, the rack of which consists of elements extending along the entire length of the staircase, as in the document JP 11050625 .
  • the Applicant has developed a prefabricated concrete staircase that does not require the prior installation of a silt and may be of straight or quarter-turn type.
  • the staircase according to the present invention is manuportable, and has the advantage of being able to be straight or quarter turn. Its realization makes it possible to overcome the problems related to the weight, because of the modular character of the elements which constitute it.
  • the present invention relates to a prefabricated concrete staircase, consisting of at least one rack.
  • the latter is directed according to the angle of inclination of the staircase; it provides support for the walking elements.
  • At least one step element comprising a step and a riser, is arranged on the rack.
  • the step element and the rack and form a linear cavity and continuous to receive a reinforcing mechanical reinforcement, and then to be filled with concrete.
  • the staircase according to the invention is characterized in that the rack is in the form of individualized elements with respect to the direction of the stairway defined by the slope, said elements each being constituted by two lateral parts interconnected by a lower part. At least a lateral portion of each of these individual elements forming the rack is shaped to receive a step and a riser.
  • the staircase according to the present invention has the advantage of being able to be straight or quarter turn.
  • the support beam of the steps is constituted by at least two racks
  • the latter are images of one another and allow the support of walking.
  • the two racks are symmetrical to one another with respect to a vertical plane.
  • the staircase includes a reinforcement placed in each rack before the latter is filled with concrete.
  • concrete is added element of walking after walking element. Indeed, the concrete is poured into the rack and the step element is then sealed over it.
  • the On / rack connection is provided by two steels in loop coming from the lower face of the step. These steels also make it possible to ensure the handling of said steps.
  • the individual elements of the rotating rack have three side portions and are not reinforced by reinforcement.
  • each individualized element forming the rack of the staircase according to the invention comprises an anchor foot intended to be housed in the corresponding female part of the lower part of the step.
  • This self-locking device thus makes it possible to stabilize the step element.
  • the step element comprises a step and an upper riser, ensuring the formwork, said riser extending over the entire length of the step, or limitatively to the plumb of the House warming party.
  • the individualized elements forming the rack can be single or double. In other words, they can receive one or two walking elements. In doing so, it is possible to make stairs with even or odd steps.
  • each of the individualized elements is advantageously constituted of a single unitary part formed by two lateral parts interconnected by a lower part in the case of a straight staircase.
  • the introduction of a reinforcement or reinforcement provides mechanical support to the structure.
  • the laying of the steps and the pouring of the concrete into the rack as the assembly progresses makes it possible to make the rack and the staircase without heavy handling means.
  • the step with its riser constitutes the shuttering element with the individualized element of the rack resting on the bastaing.
  • step element does not have a higher riser
  • additional formwork is necessary in order to contain the concrete and ensure the installation of the upper step.
  • one of the lateral parts in this case the internal lateral part (10) is beveled (12), that is to say that its thickness is reduced in the direction of the bottom. In doing so, one optimizes the mechanical maintenance with the concrete, once this one cast, the beveled form preventing any risk of separation of the concrete.
  • the figure 7 illustrates the front (A), section (B) and top (C) views of an individual rack member providing the turn (6) for the realization of a quarter-turn staircase.
  • FIG 8 a cross-sectional view of a step associated with an individualized rack member according to the invention, in which the rack is constituted by two elements contiguous to one another, like the figures 1 , 3 and 4 .
  • a bastaing (16) is put in place and supported, prior to pouring the concrete.
  • This bastaing is removed after sufficient hardening of the concrete set up in the individualized components of the rack. It can, however, be maintained during the hardening phase of the concrete, to allow the use of the staircase in progress.
  • the modular elements constituting the rack are made by molding concrete.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)

Abstract

The staircase has a rack on which a step element (1) is arranged, where the element comprises a step and a counter step. The rack and the step element define a linear and continuous cavity for receiving reinforcement (5). The rack is formed as a simple individual element (3) and a double individual element (4), where each individual element is provided with an outer lateral part and an inner lateral part connected with each other by a lower part. The outer lateral part of the element is shaped to receive the step and the counter step. An independent claim is also included for a method for manufacturing a precast concrete staircase.

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

La présente invention concerne un escalier préfabriqué en béton, de type droit ou quart tournant.The present invention relates to a prefabricated concrete staircase, straight or quarter turn type.

Les domaines d'application de la présente invention sont vastes étant donnée la simplicité avec laquelle un tel escalier peut être posé sans moyens de manutention lourds.The fields of application of the present invention are vast given the simplicity with which such a staircase can be installed without heavy handling means.

ETAT ANTERIEUR DE LA TECHNIQUEPRIOR STATE OF THE TECHNIQUE

Les escaliers préfabriqués en béton constitués essentiellement d'éléments modulaires, sont couramment utilisés dans la mesure où ils sont facilement et rapidement mis en place, et peu coûteux.Prefabricated concrete staircases consisting essentially of modular elements, are commonly used to the extent that they are easily and quickly put in place, and inexpensive.

Le document EP 0 126 681 décrit un escalier préfabriqué en béton constitué d'au moins un limon et d'éléments de marches préalablement fabriqués. Le limon est muni d'échancrures transversales destinées à ancrer les éléments de marche. Ces derniers sont constitués d'une paroi horizontale et d'une paroi verticale formant ainsi la marche et la contremarche supérieure.The document EP 0 126 681 describes a prefabricated concrete staircase consisting of at least one silt and previously manufactured staircase elements. The silt is provided with transverse notches intended to anchor the walking elements. The latter consist of a horizontal wall and a vertical wall thus forming the step and the upper riser.

La mise en oeuvre de cet escalier nécessite cependant la réalisation préalable d'un limon. Ledit limon doit ensuite être installé entre les deux étages à relier avant de pouvoir effectuer la pose des éléments de marche. Ces étapes préalables rendent le procédé de fabrication de l'escalier décrit dans le document EP 0 126 681 assez fastidieux. De plus, le limon est constitué d'un seul élément lourd et encombrant et dont la pose est contraignante.The implementation of this staircase however requires the prior completion of a slime. The silt must then be installed between the two stages to be connected before the step elements can be laid. These preliminary steps make the stair manufacturing process described in the document EP 0 126 681 quite tedious. In addition, the silt consists of a single heavy and bulky item and whose installation is restrictive.

Le document FR 2 801 619 décrit un autre type d'escalier préfabriqué en béton. Les éléments de marche sont monoblocs et comportent une marche, une contremarche ainsi que deux limons. L'assemblage de ces monoblocs constitue l'escalier.The document FR 2 801 619 describes another type of prefabricated concrete staircase. The walking elements are monobloc and include a step, a riser and two silts. The assembly of these monoblocks constitutes the staircase.

Le document FR 2 801 620 décrit un escalier droit préfabriqué en béton ne comportant pas de limon. La mise en oeuvre de cet escalier nécessite la pose d'un bastaing selon l'angle d'inclinaison de l'escalier et sur lequel les éléments de marche préfabriqués sont posés les uns après les autres.The document FR 2 801 620 describes a straight prefabricated concrete staircase with no silt. The implementation of this staircase requires the installation of a bastaing according to the angle of inclination of the staircase and on which the prefabricated step elements are placed one after the other.

Les éléments de marche assurent à la fois le soutien et la cohésion de l'escalier. Lorsque plusieurs d'entre eux sont positionnés sur le bastaing, ils présentent en dessous du giron une structure définissant une cavité linéaire et continue.The walking elements ensure both the support and the cohesion of the staircase. When several of them are positioned on the bastaing, they have below the tread a structure defining a linear and continuous cavity.

Afin d'assurer une parfaite cohésion de l'ensemble, un ferraillage est introduit dans la cavité linéaire située en dessous du giron des éléments de marche. Cette cavité est ensuite comblée par du béton.To ensure a perfect cohesion of the assembly, a reinforcement is introduced into the linear cavity located below the tread of the walking elements. This cavity is then filled with concrete.

Le document JP 11050625 décrit également un escalier droit en béton comprenant une crémaillère. La crémaillère comprend deux parties latérales reliées entre elles par une partie inférieure. Elle est en fait constituée de plusieurs éléments, chaque élément s'étendant unitairement selon toute la longueur (ou hauteur) de l'escalier.The document JP 11050625 also describes a straight concrete staircase comprising a rack. The rack comprises two lateral parts interconnected by a lower part. It is actually made of several elements, each element extending unitarily along the entire length (or height) of the staircase.

Par ailleurs, le document DE 1 039 212 décrit un escalier droit en béton, dont la crémaillère est constituée d'éléments s'étendant sur toute la longueur de l'escalier à l'instar du document JP 11050625 .In addition, the document DE 1,039,212 describes a straight staircase made of concrete, the rack of which consists of elements extending along the entire length of the staircase, as in the document JP 11050625 .

Bien que techniquement satisfaisants, ces modes de réalisation concernent uniquement les escaliers droits.Although technically satisfactory, these embodiments only concern straight staircases.

Le Demandeur a mis au point un escalier préfabriqué en béton ne nécessitant pas la réalisation préalable d'un limon et pouvant être de types droit ou quart tournant.The Applicant has developed a prefabricated concrete staircase that does not require the prior installation of a silt and may be of straight or quarter-turn type.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

L'escalier selon la présente invention est manuportable, et présente l'avantage de pouvoir être droit ou quart tournant. Sa réalisation permet de s'affranchir des problèmes liés au poids, en raison du caractère modulaire des éléments qui le constituent.The staircase according to the present invention is manuportable, and has the advantage of being able to be straight or quarter turn. Its realization makes it possible to overcome the problems related to the weight, because of the modular character of the elements which constitute it.

De part la relative légèreté des éléments le constituant, il présente de nombreux avantages dont celui de pouvoir être mis en oeuvre notamment dans le cadre de la rénovation de bâtiments ou dans les chantiers ne permettant pas la mise en oeuvre de moyens de manutention lourds.Due to the relative lightness of the elements constituting it, it has many advantages including that of being able to be implemented in particular in the context of the renovation of buildings or in the building sites not allowing the implementation of heavy handling means.

Plus précisément, la présente invention concerne un escalier préfabriqué en béton, constitué d'au moins une crémaillère. Cette dernière est dirigée selon l'angle d'inclinaison de l'escalier ; elle assure le soutien des éléments de marche. Au moins un élément de marche, comprenant une marche et une contremarche, est agencé sur la crémaillère. L'élément de marche et la crémaillère forment ainsi une cavité linéaire et continue destinée à recevoir un ferraillage de renfort mécanique, puis à être remplie par du béton.More specifically, the present invention relates to a prefabricated concrete staircase, consisting of at least one rack. The latter is directed according to the angle of inclination of the staircase; it provides support for the walking elements. At least one step element, comprising a step and a riser, is arranged on the rack. The step element and the rack and form a linear cavity and continuous to receive a reinforcing mechanical reinforcement, and then to be filled with concrete.

L'escalier selon l'invention se caractérise en ce que la crémaillère se présente sous la forme d'éléments individualisés par rapport à la direction de l'escalier défini par la pente, lesdits éléments étant chacun constitués de deux parties latérales reliées entre elles par une partie inférieure. Au moins une partie latérale de chacun de ces éléments individualisés formant la crémaillère est conformée de manière à recevoir une marche et une contremarche.The staircase according to the invention is characterized in that the rack is in the form of individualized elements with respect to the direction of the stairway defined by the slope, said elements each being constituted by two lateral parts interconnected by a lower part. At least a lateral portion of each of these individual elements forming the rack is shaped to receive a step and a riser.

Comme déjà indiqué, l'escalier selon la présente invention présente l'avantage de pouvoir être droit ou quart tournant.As already indicated, the staircase according to the present invention has the advantage of being able to be straight or quarter turn.

L'invention comporte plusieurs modes de réalisation préférés dans lesquels l'escalier peut comporter :

  • une crémaillère centrale constituée de deux crémaillères latérales accolées l'une à l'autre ; la partie latérale extérieure de chaque élément individualisé formant la crémaillère présentant une échancrure découpée de manière à recevoir une marche et une contremarche ;
  • deux crémaillères latérales espacées l'une de l'autre ; la partie latérale extérieure de chaque élément individualisé formant la crémaillère présentant une échancrure découpée de manière à recevoir une marche et une contremarche.
The invention comprises several preferred embodiments in which the staircase may comprise:
  • a central rack consisting of two side racks contiguous to each other; the outer lateral part of each individualized element forming the rack having an indentation cut so as to receive a step and a riser;
  • two lateral racks spaced apart from each other; the outer lateral portion of each individual element forming the rack having a notch cut to receive a step and a riser.

Typiquement, lorsque la poutre de soutien des marches est constituée par au moins deux crémaillères, ces dernières sont images l'une de l'autre et permettent l'appui de la marche. En d'autres termes, les deux crémaillères sont symétriques l'une de l'autre par rapport à un plan vertical.Typically, when the support beam of the steps is constituted by at least two racks, the latter are images of one another and allow the support of walking. In other words, the two racks are symmetrical to one another with respect to a vertical plane.

Quel que soit le mode de réalisation, l'escalier comporte un ferraillage placé au sein de chaque crémaillère avant que cette dernière ne soit remplie de béton. En revanche, le béton est ajouté élément de marche après élément de marche. En effet, le béton est coulé dans la crémaillère et l'élément de marche est ensuite étanché par-dessus. La liaison marche/crémaillère est assurée par deux aciers en boucle émanant de la face inférieure de la marche. Ces aciers permettent également d'assurer la manutention desdites marches.Whatever the embodiment, the staircase includes a reinforcement placed in each rack before the latter is filled with concrete. In contrast, concrete is added element of walking after walking element. Indeed, the concrete is poured into the rack and the step element is then sealed over it. The On / rack connection is provided by two steels in loop coming from the lower face of the step. These steels also make it possible to ensure the handling of said steps.

Toutefois, dans le cas d'un escalier quart tournant, les éléments individualisés de la crémaillère assurant le tournant comportent trois parties latérales et ne sont pas renforcés par du ferraillage.However, in the case of a quarter-turn staircase, the individual elements of the rotating rack have three side portions and are not reinforced by reinforcement.

De manière avantageuse, au moins une partie latérale de chaque élément individualisé formant la crémaillère de l'escalier selon l'invention comprend un pied d'ancrage destiné à se loger dans la partie femelle correspondante de la partie inférieure de la marche. Ce dispositif autobloquant permet ainsi de stabiliser l'élément de marche.Advantageously, at least one lateral portion of each individualized element forming the rack of the staircase according to the invention comprises an anchor foot intended to be housed in the corresponding female part of the lower part of the step. This self-locking device thus makes it possible to stabilize the step element.

Selon une mise en oeuvre préférentielle de l'invention, l'élément de marche comprend une marche ainsi qu'une contremarche supérieure, assurant le coffrage, ladite contremarche s'étendant sur toute la longueur de la marche, ou limitativement à l'aplomb de la crémaillère.According to a preferred embodiment of the invention, the step element comprises a step and an upper riser, ensuring the formwork, said riser extending over the entire length of the step, or limitatively to the plumb of the House warming party.

Les éléments individualisés formant la crémaillère peuvent être simples ou doubles. En d'autres termes, ils peuvent ainsi recevoir un ou deux éléments de marche. Ce faisant, il est possible de réaliser des escaliers à nombre de marches pair ou impair.The individualized elements forming the rack can be single or double. In other words, they can receive one or two walking elements. In doing so, it is possible to make stairs with even or odd steps.

En outre, chacun des éléments individualisés est avantageusement constitué d'une seule pièce unitaire formée par deux parties latérales reliées entre elles par une partie inférieure dans le cas d'un escalier droit.In addition, each of the individualized elements is advantageously constituted of a single unitary part formed by two lateral parts interconnected by a lower part in the case of a straight staircase.

La présente invention concerne également un procédé de fabrication d'un escalier préfabriqué en béton selon les étapes suivantes :

  • pose d'un bastaing entre les deux étages à relier, selon l'angle d'inclinaison de l'escalier à réaliser ;
  • assemblage de la crémaillère par pose successive, au moins dans le sens de la pente de l'escalier, d'au moins un élément individualisé préfabriqué de crémaillère ;
  • pose du ferraillage au sein de la crémaillère ;
  • pose d'au moins un élément de marche et coulage de béton dans la crémaillère au fur et à mesure de l'avancement du montage.
The present invention also relates to a method for manufacturing a prefabricated concrete staircase according to the following steps:
  • laying a bastaing between the two floors to be connected, according to the angle of inclination of the staircase to be made;
  • assembly of the rack by successive laying, at least in the direction of the slope of the staircase, of at least one prefabricated individual rack-and-pinion element;
  • laying of reinforcement in the rack;
  • placing at least one step element and pouring concrete into the rack as the assembly progresses.

L'introduction d'un ferraillage ou armature, apporte un soutien mécanique à la structure. La pose des marches et le coulage du béton dans la crémaillère au fur et à mesure de l'avancement du montage permettent de réaliser la crémaillère et l'escalier sans moyens de manutention lourd. La marche avec sa contremarche constituent l'élément coffrant avec l'élément individualisé de la crémaillère posé sur le bastaing.The introduction of a reinforcement or reinforcement provides mechanical support to the structure. The laying of the steps and the pouring of the concrete into the rack as the assembly progresses makes it possible to make the rack and the staircase without heavy handling means. The step with its riser constitutes the shuttering element with the individualized element of the rack resting on the bastaing.

Dans le cas où l'élément de marche ne comporte pas de contremarche supérieure, un coffrage supplémentaire est nécessaire afin de contenir le béton et assurer la pose de la marche supérieure.In the case where the step element does not have a higher riser, additional formwork is necessary in order to contain the concrete and ensure the installation of the upper step.

DESCRIPTION DES FIGURESDESCRIPTION OF THE FIGURES

L'invention et les avantages qui en découlent ressortiront mieux des exemples de réalisation qui suivent, donnés à titre indicatif et non limitatif à l'appui des figures annexées.

  • La figure 1 illustre un escalier droit selon l'invention et partiellement recouvert d'éléments de marche (1), dans lequel les contremarches ne sont pas représentées, afin de mieux montrer le principe de l'invention. La crémaillère centrale est constituée de deux crémaillères latérales accolées l'une à l'autre, et au sein desquelles un ferraillage (5) est posé. Les crémaillères sont formées par des éléments individualisés simples (3) ou doubles (4), c'est-à-dire correspondant à un ou deux éléments de marche.
  • La figure 2 illustre un escalier droit selon l'invention et partiellement recouvert d'éléments de marche comprenant une contremarche (2). La crémaillère est constituée de deux crémaillères latérales espacées l'une de l'autre, et parallèles l'une à l'autre, et au sein desquelles un ferraillage est posé.
  • La figure 3 (A et B) illustre un escalier quart tournant selon l'invention. La crémaillère centrale est constituée de deux crémaillères latérales accolées l'une à l'autre (figure 3A), à l'instar de la figure 1.
  • La figure 4 représente une vue de dessus d'un escalier quart tournant droit. Les éléments individualisés de la crémaillère assurant le tournant de l'escalier (6, 6', 6") comportent trois parties latérales et ne sont pas renforcés par du ferraillage (5). La partie linéaire de la crémaillère est conforme aux crémaillères des escaliers droits selon l'invention.
  • La figure 5 représente une vue en coupe d'un élément de marche comportant une contremarche (2). La partie inférieure de la marche comprend une échancrure (7) dans laquelle se loge le pied d'ancrage (8) situé sur au moins une partie latérale de chaque élément individualisé formant la crémaillère, et illustré au sein de la figure 6C.
  • La figure 6 représente les vues de face (A) et de côté (B) et isométrique (C) d'un élément individualisé double (4) d'une crémaillère latérale. La partie latérale extérieure (9) présente une échancrure de manière à recevoir deux éléments de marche (1, 2). Elle présente également deux pieds d'ancrage (8) destinés à se loger dans la partie femelle (7) correspondante de la partie inférieure des marches. L'élément individualisé double (4) est constitué de deux parties latérales (9, 10) reliées entre elles par une partie inférieure (11). Les pieds d'ancrage (8) sont situés sur les côtés supérieurs et sensiblement horizontaux de la partie latérale extérieure (9) de l'élément individualisé de la crémaillère.
The invention and the advantages which result therefrom will emerge more clearly from the exemplary embodiments which follow, given by way of indication and not by way of limitation, in support of the appended figures.
  • The figure 1 illustrates a straight staircase according to the invention and partially covered with step elements (1), in which the risers are not shown, to better show the principle of the invention. The central rack consists of two lateral racks contiguous to one another, and within which a reinforcement (5) is placed. The racks are formed by single individual elements (3) or double (4), that is to say corresponding to one or two walking elements.
  • The figure 2 illustrates a straight staircase according to the invention and partially covered with step elements comprising a riser (2). The rack consists of two lateral racks spaced from one another, and parallel to each other, and within which a reinforcement is placed.
  • The figure 3 (A and B) illustrates a quarter-turn staircase according to the invention. The central rack consists of two side racks contiguous to each other ( figure 3A ), like the figure 1 .
  • The figure 4 represents a top view of a quarter-turn staircase right. The individualized elements of the rack providing the turn of the staircase (6, 6 ', 6 ") have three lateral parts and are not reinforced by reinforcement (5) The linear part of the rack is in accordance with the racks of the stairs rights according to the invention.
  • The figure 5 is a sectional view of a step element having a riser (2). The lower part of the step comprises a notch (7) in which is housed the anchoring foot (8) located on at least one lateral portion of each individualized element forming the rack, and illustrated within the Figure 6C .
  • The figure 6 represents the front (A) and side (B) and isometric (C) views of a double individualized element (4) of a side rack. The outer side portion (9) has a notch so as to receive two step elements (1, 2). It also has two anchoring feet (8) intended to be housed in the corresponding female part (7) of the lower part of the steps. The double individualized element (4) consists of two lateral parts (9, 10) interconnected by a lower part (11). The anchoring feet (8) are located on the upper and substantially horizontal sides of the outer lateral part (9) of the individualized element of the rack.

En outre, on observe que l'une des parties latérales, en l'espèce la partie latérale interne (10) est biseautée (12), c'est-à-dire que son épaisseur se réduit en direction du bas. Ce faisant, on optimise le maintien mécanique avec le béton, une fois celui-ci coulé, la forme biseautée empêchant tout risque de désolidarisation du béton.In addition, it is observed that one of the lateral parts, in this case the internal lateral part (10) is beveled (12), that is to say that its thickness is reduced in the direction of the bottom. In doing so, one optimizes the mechanical maintenance with the concrete, once this one cast, the beveled form preventing any risk of separation of the concrete.

La figure 7 illustre les vues de face (A), de coupe (B) et de dessus (C) d'un élément individualisé de crémaillère assurant le tournant (6) pour la réalisation d'un escalier quart tournant.The figure 7 illustrates the front (A), section (B) and top (C) views of an individual rack member providing the turn (6) for the realization of a quarter-turn staircase.

On a représenté en relation avec la figure 8 une vue en section transversale d'une marche associée à un élément individualisé de crémaillère selon l'invention, dans lequel la crémaillère est constituée par deux élément accolés l'un à l'autre, à l'instar des figures 1, 3 et 4.We have shown in relation to the figure 8 a cross-sectional view of a step associated with an individualized rack member according to the invention, in which the rack is constituted by two elements contiguous to one another, like the figures 1 , 3 and 4 .

On peut observer la présence de boucles d'acier (13) émanant de la face inférieure (14) du plateau de marche (15), coopérant avec le ferraillage (5), notamment par ligature. Ces boucles permettant en outre la manutention dudit plateau de marche préalablement à sa mise en place pour la constitution de l'escalier.It can be observed the presence of steel loops (13) emanating from the lower face (14) of the step plate (15), cooperating with the reinforcement (5), in particular by ligation. These loops further allowing the handling of said walking tray prior to its establishment for the constitution of the staircase.

On a représenté en relation avec la figure 9 une vue en section transversale d'une marche associée à un élément individualisé de crémaillère selon l'invention, dans lequel la crémaillère est constituée par deux élément séparés l'un de l'autre, à l'instar de la figure 2.We have shown in relation to the figure 9 a cross-sectional view of a step associated with an individual rack element according to the invention, in which the rack is constituted by two elements separated from each other, like the figure 2 .

Dans cette configuration, un bastaing (16) est mis en place et étayé, préalablement au coulage du béton. Ce bastaing est enlevé après durcissement suffisant du béton mis en place dans les éléments individualisés constitutifs de la crémaillère. Il peut cependant être maintenu pendant la phase de durcissement du béton, afin de permettre l'utilisation de l'escalier en cours de réalisation.In this configuration, a bastaing (16) is put in place and supported, prior to pouring the concrete. This bastaing is removed after sufficient hardening of the concrete set up in the individualized components of the rack. It can, however, be maintained during the hardening phase of the concrete, to allow the use of the staircase in progress.

Les éléments modulaires constitutifs de la crémaillère sont réalisés par moulage de béton.The modular elements constituting the rack are made by molding concrete.

On conçoit qu'en raison de leur caractère modulaire et unitaire, ces éléments sont aisément manuportables.It is understandable that because of their modular and unitary character, these elements are easily manuportables.

Claims (8)

Escalier préfabriqué en béton constitué d'au moins une crémaillère sur laquelle est agencé au moins un élément de marche (1, 2) comprenant au moins une marche une contremarche, ladite crémaillère et l'élément de marche définissant une cavité linéaire et continue destinée à recevoir un ferraillage (5) de renfort mécanique, puis à être remplie de béton, caractérisé en ce que la crémaillère se présente sous la forme d'éléments individualisés (3, 4) constitués chacun de deux parties latérales (9, 10) reliées entre elles par une partie inférieure (11), au moins une partie latérale (9) de ces éléments individualisés étant conformée de manière à recevoir une marche et une contremarche (1, 2).Prefabricated concrete staircase consisting of at least one rack on which is arranged at least one step element (1, 2) comprising at least one step, a riser, said rack and the step element defining a linear and continuous cavity intended for receiving a reinforcement (5) mechanical reinforcement, then to be filled with concrete, characterized in that the rack is in the form of individualized elements (3, 4) each consisting of two lateral parts (9, 10) connected between they by a lower part (11), at least a lateral portion (9) of these individualized elements being shaped to receive a step and a riser (1, 2). Escalier préfabriqué en béton selon la revendication 1, caractérisé en ce qu'il comprend une crémaillère centrale constituée de deux crémaillères latérales accolées l'une à l'autre et symétriques l'une de l'autre par rapport à un plan vertical.Prefabricated concrete staircase according to claim 1, characterized in that it comprises a central rack consisting of two lateral racks contiguous to one another and symmetrical to one another with respect to a vertical plane. Escalier préfabriqué en béton selon la revendication 1, caractérisé en ce qu'il comprend deux crémaillères latérales espacées l'une de l'autre.Prefabricated concrete staircase according to claim 1, characterized in that it comprises two lateral racks spaced from one another. Escalier préfabriqué en béton selon l'une des revendications précédentes, caractérisé en ce que l'une au moins des parties latérales définissant les éléments individualisés est biseautée afin d'assurer le maintien mécanique avec le béton coulé subséquemment.Prefabricated concrete staircase according to one of the preceding claims, characterized in that at least one of the lateral parts defining the individualized elements is beveled in order to ensure mechanical maintenance with the subsequently cast concrete. Escalier préfabriqué en béton selon l'une des revendications précédentes, caractérisé en ce que chacune des marches comprend deux aciers en boucle émanant de sa face inférieure, destinés à être connectés au ferraillage (5) mis en place au sein de la crémaillère, et en outre, à assurer la manutention desdites marches.Prefabricated concrete staircase according to one of the preceding claims, characterized in that each of the steps comprises two loop steels emanating from its lower face, intended to be connected to the reinforcement (5) set up within the rack, and in addition, to ensure the handling of said steps. Escalier préfabriqué en béton selon l'une des revendications précédentes caractérisé en ce qu'au moins une partie latérale de chaque élément individualisé constitutif de la crémaillère ou des crémaillères comprend un pied d'ancrage (8) destiné à se loger dans la partie femelle (7) correspondante ménagée dans la partie inférieure de la marche.Prefabricated concrete staircase according to one of the preceding claims, characterized in that at least one lateral part of each individual constituent element of the rack or racks comprises an anchoring foot (8) intended to be housed in the female part ( 7) corresponding in the lower part of the step. Escalier préfabriqué en béton selon l'une des revendications précédentes caractérisé en ce que l'escalier est quart tournant et en ce que les éléments individualisés de la crémaillère assurant le tournant (6, 6', 6") comportent trois parties latérales.Prefabricated concrete staircase according to one of the preceding claims, characterized in that the staircase is quarter-turn and in that the individual elements of the rack providing the turn (6, 6 ', 6 ") comprise three lateral parts. Procédé de fabrication d'un escalier selon l'une des revendications précédentes comportant les étapes suivantes : - pose d'un bastaing entre les deux étages à relier, selon l'angle d'inclinaison de l'escalier, - assemblage de la crémaillère par pose successive d'au moins un élément individualisé de crémaillère (3, 4), - pose du ferraillage au sein de la crémaillère (5), - pose des éléments de marche (1, 2) et coulage de béton dans la crémaillère au fur et à mesure de l'avancement du montage. Method for manufacturing a staircase according to one of the preceding claims, comprising the following steps: - laying a bastaing between the two floors to be connected, according to the angle of inclination of the stairs, - assembly of the rack by successive laying of at least one individualized rack member (3, 4), - placing the reinforcement in the rack (5), - Laying elements (1, 2) and pouring concrete into the rack as the assembly progresses.
EP11305343.3A 2010-07-01 2011-03-29 Prefabricated concrete staircase with modular stair carriage Withdrawn EP2402531A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1055309A FR2962143B1 (en) 2010-07-01 2010-07-01 PREFABRICATED STAIRCASE IN CONCRETE WITH MODULAR RACK

Publications (2)

Publication Number Publication Date
EP2402531A2 true EP2402531A2 (en) 2012-01-04
EP2402531A3 EP2402531A3 (en) 2014-10-08

Family

ID=43532758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11305343.3A Withdrawn EP2402531A3 (en) 2010-07-01 2011-03-29 Prefabricated concrete staircase with modular stair carriage

Country Status (2)

Country Link
EP (1) EP2402531A3 (en)
FR (1) FR2962143B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103510666A (en) * 2013-10-23 2014-01-15 华煜建设集团有限公司 Stair
FR3041979A1 (en) * 2015-10-01 2017-04-07 Escaliers Flin STAIRCASE WITH CENTRAL RACK IN TWO ELEMENTS
US10006207B2 (en) * 2015-06-22 2018-06-26 Dean G Grommet Open stair case with center uncut stringer
CN110158879A (en) * 2019-05-19 2019-08-23 北京工业大学 A kind of assembled vibration damping stair of built-in bidirectional damper particle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3069560B1 (en) 2017-07-25 2019-08-23 Pbm Concept PREFABRICATED RIGHT STAIRCASE WITH ADJUSTABLE GIRON
FR3087462B1 (en) 2018-10-22 2020-10-09 Pbm Groupe PREFABRICATED STAIRCASE WITH ADVANCED STEP PLATES
CN113898224A (en) * 2021-11-25 2022-01-07 中冶建工集团有限公司 Construction method of assembled steel-concrete structure ladder stand

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039212B (en) 1954-05-05 1958-09-18 Franz Wild Dipl Ing Precast concrete staircase made of staircases
EP0126681A1 (en) 1983-05-11 1984-11-28 Jean-Paul Barreau Prefabricated straight concrete stair
JPH1150625A (en) 1997-08-05 1999-02-23 Haruo Suzuki Stair
FR2801620A1 (en) 1999-11-30 2001-06-01 Holding Pbm Prefabricated concrete staircase has precast concrete treads with lugs connected by cast in metal beam
FR2801619A1 (en) 1999-11-30 2001-06-01 Holding Pbm Concrete stairs use pre-manufactured step elements, each comprising a step a riser and string pieces forming a shoulder to cooperate with the top step

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074845B (en) * 1960-02-04 Nürnberg Robert Richter Precast concrete staircase
DE1137196B (en) * 1957-11-14 1962-09-27 Karl Baessler Stairway made of adjacent staircase beams
US4250672A (en) * 1979-10-22 1981-02-17 American Stair Corporation Inc. Externally reinforced concrete stairs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039212B (en) 1954-05-05 1958-09-18 Franz Wild Dipl Ing Precast concrete staircase made of staircases
EP0126681A1 (en) 1983-05-11 1984-11-28 Jean-Paul Barreau Prefabricated straight concrete stair
JPH1150625A (en) 1997-08-05 1999-02-23 Haruo Suzuki Stair
FR2801620A1 (en) 1999-11-30 2001-06-01 Holding Pbm Prefabricated concrete staircase has precast concrete treads with lugs connected by cast in metal beam
FR2801619A1 (en) 1999-11-30 2001-06-01 Holding Pbm Concrete stairs use pre-manufactured step elements, each comprising a step a riser and string pieces forming a shoulder to cooperate with the top step

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103510666A (en) * 2013-10-23 2014-01-15 华煜建设集团有限公司 Stair
US10006207B2 (en) * 2015-06-22 2018-06-26 Dean G Grommet Open stair case with center uncut stringer
FR3041979A1 (en) * 2015-10-01 2017-04-07 Escaliers Flin STAIRCASE WITH CENTRAL RACK IN TWO ELEMENTS
CN110158879A (en) * 2019-05-19 2019-08-23 北京工业大学 A kind of assembled vibration damping stair of built-in bidirectional damper particle

Also Published As

Publication number Publication date
FR2962143A1 (en) 2012-01-06
FR2962143B1 (en) 2012-08-03
EP2402531A3 (en) 2014-10-08

Similar Documents

Publication Publication Date Title
EP2402531A2 (en) Prefabricated concrete staircase with modular stair carriage
EP1434920B1 (en) Thermal-break device for concrete floor, and floor equipped therewith
EP3296481A1 (en) Prefabricated wall with integrated formwork
EP3070221B1 (en) Method for treating thermal bridges, associated heat-insulating element and structural connection element, and pre-slab provided with such elements
FR2995330A1 (en) CONCRETE PREDALLE FOR CONSTRUCTION OF BUILDING FLOORS
FR2973407A1 (en) Thin ultra-high performance fiber reinforced concrete plate for formwork for constructing slab in building, has ribs and grooves for rigid support of counterpart e.g. reinforced concrete beam, in contact with plate
FR2939817A1 (en) Prefabricated elementary block for constructing e.g. outer insulating wall of building, has connection elements connecting reinforcement structures to fix inner bearing wall and outer protective shell to maintain constant transversal gap
FR2687711A1 (en) Method for constructing a building, such as an underground shelter, by assembly of prefabricated elements
EP2363549B1 (en) Staircase with pre-fabricated concrete bearing wall
EP3070223B1 (en) Straight edge of a construction element and construction element comprising such an edge
EP3070220B1 (en) Method for treating thermal bridges
EP1918488A1 (en) Formwork support device for constructions such as concrete reservoirs
FR2900672A1 (en) Dwelling module for forming e.g. prefabricated single-family house, has base constituted of reinforced concrete slab, where slab has lower surface including connection beams extending from one side to another side of retaining beam
EP4063590A1 (en) Device for securing a construction accessory to tie bars, associated attachment method and construction element
EP2568098B1 (en) Prefabricated building block for building steps, in particular for swimming-pool construction
EP3070224B1 (en) Straight edge of construction element, construction element comprising such an edge and method for manufacturing such a construction element
FR3058428B1 (en) BUILDING ELEMENT WITH INTEGRATED PLANELLE
FR3038631A1 (en) CONSTRUCTION ELEMENT AND METHOD FOR MOUNTING SUCH A BUILDING ELEMENT
FR3047503A1 (en) DEVICE FOR FIXING A GUARD RAIL TO A PREFABRICATED WALL AND ASSOCIATED GARDEN-BODY
FR2812323A1 (en) Prefabricated concrete swimming pool is composed of two longitudinal elements forming vertical wall and bottom wall portion having longitudinal rabbet fitting rabbet in bottom slab forming pool bottom and two end elements
EP2231949A2 (en) Prefabricated module for building a riser wall or a partition
OA19772A (en) A method of manufacturing a floor, floor and associated integrated prop formwork element.
FR3080869A1 (en) METHOD FOR MANUFACTURING FLOOR, FLOOR AND INTEGRATED STONE FORMING MEMBER THEREFOR
FR3035893A1 (en) FORMWORK ASSEMBLY FOR CARRYING OUT A COFFING STRUCTURE OF A CONCRETE FLOOR
FR2938577A1 (en) Basin i.e. swimming pool, has external peripheral zone including surface coating and consoles, where consoles are isolated from each other by spacers and each spacer maintains predetermined spacing between adjacent consoles

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: E04H 12/22 20060101AFI20140903BHEP

Ipc: E04F 11/025 20060101ALI20140903BHEP

Ipc: E04F 11/028 20060101ALI20140903BHEP

Ipc: E04F 11/022 20060101ALI20140903BHEP

Ipc: E04F 11/116 20060101ALI20140903BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150409