DK2726681T3

DK2726681T3 - PARASISMIC DIVISION

Info

Publication number: DK2726681T3
Application number: DK12730536.5T
Authority: DK
Inventors: Roger Arese; Pierre Bourgoin; Pauline Lopez; Renato Talamonti
Original assignee: Etex Building Performance Int Sas
Priority date: 2011-07-01
Filing date: 2012-06-28
Publication date: 2018-05-22
Also published as: WO2013010769A1; PL2726681T3; EP2726681A1; ES2665509T3; NO2726681T3; CL2013003738A1; ES2665509T5; AR087016A1; EP2726681B2; EP2726681B1

Description

The present invention relates to interior works construction in seismic zones, and more particularly to the construction of partitions or wall linings.

During the construction of a building, a distinction can be drawn between the load-bearing structure and the non-load-bearing structure. By definition, it is understood that the bearing structure bears on the foundations. The non-load-bearing structure is fixed to the load-bearing structure by means of a framework referred to as primary framework. The non-load-bearing structures can themselves comprise, where necessary, a framework termed secondary framework, fixed to the primary framework. The non-load-bearing structure comprises the assembly of various elements of the structure and in particular the assembly of plasterboards with one another with the aim of defining volumes within the building. This assembly of panels requires the panels to be fixed to the secondary and primary framework.

Now, during seismic events, it is vital that the buildings can withstand the seismic stresses, and thus avoid the collapse of the building. Numerous solutions exist for reinforcing the load-bearing structure, but few solutions exist for the non-load-bearing structure.

Thus, it has become necessary to find a means for preventing plasterboards from falling during earthquakes that thus makes it possible to avoid damage to persons and thus permits a facilitated evacuation.

Thus, the problem that the invention proposes to solve is that of providing a paraseismic partition or wall lining resistant to seismic stresses.

In an unexpected manner, the inventors have demonstrated that it is possible to separate the partition from the load-bearing structure by positioning slideways on the vertical and horizontal sides of the partition. That allows the load-bearing structure to move without transmitting the movements and the stresses to the partition and without shearing the fixings which serve to retain the partition.

To this end, the present invention relates to a paraseismic partition having the features set out in Claim 1.

The invention offers at least one of the key advantages described below.

Advantageously, the paraseismic partition according to the invention can withstand a seismic event without being damaged and without detaching from the structure. Thus, the paraseismic partition according to the invention does not collapse during a seismic event, avoiding injury to the occupants of the structure.

Advantageously, the paraseismic partition according to the invention makes it possible to keep the evacuation routes of the structure available and free without obstructing them.

Advantageously, the paraseismic partition according to the invention can remain intact during low- or medium-intensity seismic events, which makes it possible to accelerate the rehabilitation of the building and to reuse the buildings within a short time.

Advantageously, the paraseismic partition according to the invention can be produced at low cost by using commercial rails and uprights.

Other advantages and features of the invention will become clearly apparent on reading the description and the purely illustrative and nonlimiting examples which will follow.

The expression "load-bearing structure" is preferably understood to mean according to the invention the assembly of the elements of a structure bearing more than their own weight. Examples which can be mentioned of elements which can be load-bearing are posts, cross-walls, floors and walls.

The expression "primary framework" is preferably intended to mean according to the invention the assembly of the rails and crossbeams of wood or of metal or of synthetic materials which are fixed to the load-bearing structure of the construction or to the foundation and which serves as a support for elements of the structure such as filling elements.

The expression "secondary framework" is preferably intended to mean according to the invention the assembly of the uprights and crossbeams of wood or of metal or of synthetic materials which is held in place by the primary framework and which serves as a support for panels, electrical apparatus, frames, fillings or for a cladding.

The expression "partition" is intended to mean equally partitions and wall linings.

The primary or secondary framework of the paraseismic partition according to the invention can be metallic or of wood or other materials. Preferably, the framework is made of metal.

The paraseismic partition according to the invention comprises a metallic primary framework comprising an upper rail fixed to the ceiling and a lower rail fixed in the floor. These two rails are arranged in the same vertical plane. The paraseismic partition according to the invention also comprises two other rails fixed to walls. These rails of the primary framework can be arranged in the same vertical plane.

The rails of the paraseismic partition according to the invention have a substantially U-shaped cross section. They can be commercially available rails.

Preferably, the flanges of the rails have a flange height of at least 25 mm, preferably at least 40 mm.

Preferably, the metal thickness of the rails is higher than normal, preferably greater than or equal to 0.5 mm, more preferably equal to 1 mm.

The uprights of the secondary framework have a smaller cross section than the cross section of the rails of the primary framework. These uprights can be regularly spaced, and generally be 40 or 60 cm.

The uprights of the secondary framework can be single or double, for example back to back or nested.

The uprights of the secondary framework can be substantially parallel. They can be arranged in the same vertical plane.

The uprights of the secondary framework are housed partially or totally in the rails of the primary framework. Thus, it is possible to partially or totally nest the uprights of the secondary framework in the rails of the primary framework. To achieve this, all that is required is to apply a slight pressure to the flanges of the uprights and to slide them partially or totally into the rails. The primary framework totally or partially covers the flanges of the uprights of the secondary framework.

The uprights of the secondary framework can move relatively with respect to the rails of the primary framework in a vertical and horizontal direction. They can slide. Preferably, the uprights are smaller in length than the height of the partition, by 5 to 10 mm.

The panels of the paraseismic partition according to the invention are fixed to the uprights of the secondary framework. Preferably, the length of the panel in the vertical direction must be smaller by 5 to 10 mm than the total height of the partition. Preferably, the width of the panel in the horizontal direction must be smaller by 5 to 10 mm than the total width of the partition.

The panels of the paraseismic partition according to the invention are not fixed to the primary framework. These panels are independent of the primary framework and hence of the load-bearing structure, that is to say is separated.

The panels of the paraseismic partition according to the invention can be boards based on hydraulic binder. In this case, these boards can be fixed, for example by screwing or adhesive bonding, to the vertical uprights.

The board based on hydraulic binder which is suitable for the partition according to the invention can be a cement board or a plasterboard, preferably this board is prefabricated in a prefabrication factory.

The cement boards which are suitable for the partition according to the invention can be based on Portland cement, cement described in accordance with the standard EN 197-1, cement of the calcium aluminate type or sulfo-aluminous cement, and mixtures thereof. Cements based on calcium aluminates, such as, for example, aluminous cements or Ciments Fondus®, are also suitable according to the invention as are the cements in accordance with the standard NF EN 14647. The preferred cement suitable for the cement boards for the partition according to the invention is Portland cement, alone or in a mixture with other aforementioned cements, such as, for example, sulfo-aluminous cements. The Portland cement which is very particularly suitable is that described in accordance with the standard EN 197-1. The cement boards can be produced by various methods and in particular by non-continuous methods (for example moulding, pressing, filtration, etc.). Cement boards referred to as lightened by virtue of the incorporation of lightweight fillers are also suitable for the partition according to the invention. These lightweight fillers are generally obtained from natural rocks or artificial rocks or are fillers obtained from petroleum products, for example polystyrene beads. Cement boards reinforced by the incorporation of fibres are also suitable for the partition according to the invention.

Plasterboards which are suitable for the partition according to the invention can be composed of a plaster body poured in the factory between two sheets of paper constituting both its facing and its reinforcement.

Preferably, the board based on hydraulic binder which is suitable for the element according to the invention is a plasterboard having a gypsum core whose density can change as a function of the distance with respect to the surface, with for example a low-density core layer incorporating foaming agents in the slurry, this core layer being sandwiched by high-density surface layers (dense layer). An example of this type of board is the conventional plasterboard of the type BA 13 with dense layers.

According to a variant, boards based on technical plaster (with high tear-off power) can also be used to improve the resistance of the partition to so-called offset loads of the shelf type. For example, high-density boards can be used having a density of preferably from 11 to 15 kg/m2, more preferably from 12 to 14 kg/m2, such as the boards La Dura, Prégyfeu, PrégyWab marketed by Lafarge Plåtres.

The hydraulic binder board which is suitable for the partition according to the invention comprises at least one facing. The conventional facings used in the manufacture of plasterboards are particularly suitable, such as, for example, the cellulose fibre facings. There may be mentioned by way of example the facings with cellulose fibres (paper, recycled paper), with synthetic fibres (polyester, polypropylene, polyethylene, etc.) or with inorganic fibres (the facings with glass fibre, with ceramic fibres etc.). The facings can be woven or non-woven. For example, the facings marketed by Johns Manville International, Inc. or marketed by Ahlstrom are suitable according to the invention.

In general, one of the sheets of paper used to manufacture the plasterboards is of dark colour, which can vary between a grey colour and a brown colour, since it is composed of cellulosic fibres not having undergone a particular purification treatment. Conventionally, this grey paper is obtained from unbleached chemical pulp, and/or from mechanical pulp and/or from thermomechanical pulp, and/or from semi-chemical pulp. The term "mechanical pulp" is generally understood to mean a pulp obtained entirely by mechanical means from various raw materials, essentially from wood, which can be provided by recovery products obtained from wood such as old cardboard boxes, kraft paper scraps and/or old newspapers. The term "thermomechanical pulp" is understood to mean a pulp obtained by thermal treatment followed by a mechanical treatment of the raw material. The term "semi-chemical pulp" is understood to mean a pulp obtained by eliminating part of the non-cellulosic components contained in the raw material by means of a chemical treatment, and requiring a subsequent mechanical treatment to disperse the fibres. The other sheet of paper used for manufacturing the plasterboards has a visible face termed facing, with a generally lighter colour than the grey sheet.

The paraseismic partition according to the invention can have, according to a variant, a space around the periphery of the panel. This space making possible the movement of the panel without damage or with reduced damage. The paraseismic partition according to the invention can comprise a seal of elastic material, this seal being located in the space around the periphery of the panel, between the load-bearing structure the panel. This seal can be made of acrylic or silicone material. Preferably, this seal is made of an intumescent material.

The invention will be described in more detail by means of the following examples, given by way of non-limiting illustration, with reference to the figures, in which: - Figure 1 represents a partial and schematic perspective view of an exemplary embodiment according to the invention of a partition; - Figure 2 represents a partial and schematic perspective view and of an exemplary embodiment according to the invention of a partition.

For the sake of clarity, identical elements have been designated by identical references in the various figures and, moreover, the various figures are not drawn to scale.

The present invention will now be described by taking plasterboards as examples of the panels. These boards are typically composed of a plaster body poured in the factory between two sheets of paper constituting both its facing and its reinforcement.

Figures 1 and 2 represent an exemplary embodiment according to the invention of a paraseismic partition. The partition comprises a primary framework comprising a lower rail (1) fixed in the floor by means of screws and a vertical rail (4) fixed in the masonry wall by means of screws. The partition comprises a primary framework also comprising an upper rail (2) fixed in the ceiling (3). As a variant, the rails (1, 2, 4) can be adhesively bonded to the floor, the ceiling or the wall. As a variant, the rails (1, 2) can be fixed to beams or a framework fixed to the floor or to the ceiling. The rails (1, 2, 4) are U-shaped metallic rails. The partition comprises a secondary framework comprising uprights (6). These uprights are positioned vertically. The uprights (6) are U-shaped metallic uprights. Plasterboards (7) are fixed to these uprights by means of screws (9). The partition comprises a seal (8) around the periphery of the plasterboards (7). The uprights (6) are partially nested in the rails (1, 2, 4). In particular, one of the uprights (6) is partially housed in the rail (4) so as to face the latter, the flanges of the rail (4) covering the flanges of the upright (6). Certain other uprights have only their ends housed in the rails (1, 2).

Claims

A parasitic partition comprising rails (1, 2, 3, 4), supports (6) and wall plates (7) arranged on a primary frame and a secondary frame, wherein - the primary frame comprises a lower rail (1) fixed to the floor and an upper rail (2) secured to a ceiling (3), these two rails being substantially horizontal, and, in addition, two other substantially vertical rails (4), these two rails being secured to one of the walls (5). ), and the rails (1, 2, 4) have a substantially U-shaped cross section; the secondary frame comprises a plurality of substantially vertical supports (6) having a substantially C-shaped cross-section, these supports having a smaller cross-section than the cross-section of the rails (1, 2, 4) of the primary frame and being partially or completely disposed in the rails (1, 2, 4) of the primary frame; the wall plates (7) are fixed to the supports (6) of the secondary frame and are independent of the primary frame.

Parasismic partition according to claim 1, characterized in that the primary frame fully or partially covers the flanges of the supports of the secondary frame.

Parasismic partition according to claim 1 or 2, characterized in that the rails (1, 2) can be fixed to supports or to a frame attached to the ground or to the ceiling.

Parasismic partition according to any one of the preceding claims, characterized in that it comprises a space around the periphery of the wall plate.

Parasismic partition according to any one of the preceding claims, characterized in that it comprises a seal (8) of elastic material, said seal being arranged in the space around the periphery of the wall plate (7), between the supporting structure of the wall plate (7). .

Parasismic partition according to any one of the preceding claims, characterized in that the wall plates of this partition are hydraulic binder plates.

Parasismic partition according to the preceding claims, characterized in that the wall plates are plasterboard.

Parasismic partition according to the preceding claims, characterized in that these plasterboards comprise a body of plaster molded in the factory between two webs of paper consisting of both its covering layer and its reinforcement.

Parseismic partition according to claim 6, characterized in that the wall plates of this partition are cement-based sheets such as those based on Portland cement, cement described in accordance with standard EN 197-1, calcium aluminate or sulfo-aluminate cement cement and mixtures thereof. .

Parasismic partition according to the preceding claims, characterized in that these cement slabs are based on calcium aluminate cements such as aluminate cements or Ciments Fondus® or cements in accordance with the standard NF EN 14647.

Parasismic partition according to claim 9, characterized in that the wall plates of this partition are plates based on Portland cement, alone or in a mixture with other cements.