FR2549883A1 - SYSTEM OF COMPATIBLE AND STANDARDIZED CONCRETE COMPONENTS DESIGNED FOR USE IN SEISMIC AREAS - Google Patents

Abstract

The invention relates to a lightweight system of compatible components made from concrete, meeting dimensional-coordination conventions and D.T.U. 22-1 (Unified Technical Document 22-1). It comprises modular panels: corner elements, with openings (doors, windows, frames), flooring and stairs. A high degree of continuity is provided by the design of the panels and the arrangements of the reinforcing members. The possibilities for use in earthquake zones is of more particular interest.

Description

The present lightweight reinforced concrete system falls within the range of compatible components, meeting the requirements for dimensional coordination. It is of particular interest to designers wishing to use light elements in seismic zones.

In the present, there are few systems that meet this use case.

If it is possible to perfect heavy elements, for use in areas with high seismicity. It is however much more difficult, to intervene on light elements, whose thin walls do not allow a sufficient coating of steels, and other closures intended to resist the stresses imposed by earthquakes. The present light components are studied for this use, they meet the requirements of current regulations.

This system of components presents after installation, and concrete / steel assembly, a great overall continuity, ensured on the one hand by the design of the beams, their shape, their jointing system between them.

On the other hand, by the connection of assembly between base of panels, and low slab; cover of panels, and ceiling, or upper slab.

The whole is studied in interior modulation.

HorizontaliMH module in 3M = 300 m / m and multiples.

In vertical module-MV 100 m / m and multiples.

These components can be produced in industrial manufacturing. In addition, and, more particularly on construction sites in developing countries, manufacturing can be carried out at start-up, using simple material means, production on a vibrating table, and immediate release. by reversal for most of the elements.

The most common standard panels 4 M = 1200 and 5 M - 15G0, as well as multiples and submultiples, are constituted by an outer veil 9), thickness 60 m / m, reinforced. Possibly clad in manufacturing, they present on the slice a decompression vacuum 2).

A perimeter rib 3) Planks at 10 - on the inside, ensures stiffening, it is completed by gussets of angles 4) Planks 1 - 2 - 3 more particularly intended for use in seismic zone.
Boards 2 - 3 - 4 - 5 - are designed to respond to this type of stress.

The rib added to the veil gives a panel thickness of 200 m / m.

As an indication, the 4 M panel weighs 720 Kg., And the 5 M panel 870 Kg.

The advantage of this system without intermediate rib is to allow the installation of boxes to arrange the manufacturing openings 6) Boards 7 and 8 - to fix doors - windows - chassis.

The horizontal lower part of the rib is hollowed out 7) Boards 1 and 4 - this in order to allow a connection with the reinforcements of the low slab 8) Plate 4 or earth- full. Continuity is also ensured by connection with the vertical reinforcements 9 ) Plate 2 - located in the posts between panels.

On the vertical edge, a decompression vacuum 2) Boards 1 and 2 - is provided on the edge.

For assembly, the panel is laid on a mat mortar 10) Boards 4 and 9.

A seal is placed on the outer edge of the vertical section 11) Boards 2 and 10 - in front of the decompression vacuum.

At the bottom of the vertical trapezoidal shape formed by the bringing together of two panels, a sealing strip 12) Boards 2 and 10 - is placed, so that the concrete which will be poured for the assembly, does not penetrate into the recess. this joint, the large base of the trapezoid will be closed by a board, a metal piece, (plywood, or various) 13) Boards 2 - 6 and 10.

Sockets 14) are provided on the edge of the ribs to fix this part.

The reinforcements are calculated to ensure either a correct grouting in current site, or a specific grouting in seismic site.

The upper part of the horizontal rib 15) Plate 5 - is intended to receive a floor, or a slab studied with the system, in order to receive a stage.

In this case, the rib and the top spoiler of the veil 16) Plate 5 - are used formwork bumpers, for the top chaining. Continuity is also taken up with the hollowed out sole of the floor panel 77) Plate 5.

In this case, the head of the first panel will receive a seal 18) Plate 5 - on which the floor panel will come.

The jointing between panels on inside and outside corners is carried out using a formwork fixed on the sockets 19 Boards 6 Eet 1, - arranged during the manufacturing on the edges. Special rablettes provided in the molds, allow indifferently manufacture standard panel, inside corner panel 20), or outgoing corner panel 21) Board 6.

Buildings thus constituted on one or two levels, can receive rooftop terrace, or any other traditional roofing system. In the latter case, the upper chaining receives during casting, a piece of wood or metal 22) Board 5 embedded in concrete, and whose the sandpit function, allows the fixing of the frame.

In the case of a recess made during manufacture for the installation of French windows or frames, sockets are embedded 23) Boards 7 and 8 - to allow the fixing of the window frames.

The 3 H floor slabs, 300 m / m and multiple in width, are produced in length corresponding to the size of the rooms, according to current building systems, frets allowing the connection with the compression slab, calculated according to the dimension parts, and overload.

Any standard modular staircase for basement or terrace is provided in two racks supporting load-bearing steps, and possibly risers.

Depending on the size available, the rack can be formed by a single flight, or by two half-flights, with intermediate landing for installation of the "L" staircase.

For the ground, depending on the quality of the latter, seismic zone or not, sills are studied, depending on the data. They possibly receive a floor of the high floor type.

The use of these elements in the basement requires a special study, with the use of special components.

For splits 24) Plate 10 - the same type of standard panels is used, possibly including an opening, and lined on one side. Also provided are solid panels, two finished faces, of variable thickness, of floor height, and made according to the desired width.

For use on the roof terrace, a freestanding acroterion 25) Plank 9provided, it has the same horizontal lower rib as the standard panels, and therefore, anchoring is ensured in connection with the reinforcement of the top chaining 26) .

In the case of a flat roof, the slab will receive a commercial waterproofing system.

This acroterion is limited in height if the terrace is not used by people, otherwise it forms a railing, with the height provided for by the regulations.

Claims (6)

1 - Light system of compatible components, in Reinforced Concrete, meeting the  dimensional coordination conventions, and D.T.U., designed  to be used in seismic zones.  of the perimeter rib.  sufficiently coated steels.This additional reinforcement, connected to those  responds to the most stressed areas, and provide  designed with a veil and gussets of angles, whose location cor  avoiding collapse under the effect of an earthquake, the panels are  Characterized by the fact that in order to present a correct resistance 2 - Device according to claim 1). Characterized by the fact that the ner  perimeter frame has on the low and high horizontal parts,  a recess allowing the connection of the panel reinforcements with those  stringers or low slab, and those of the high slab. 3 - Device according to claim 1). Characterized by the fact that the ner  perimeter vure is designed to form, when two panels are  placed side by side, the location of a trapezoidal section post,  whose function is on the one hand the closure of the two panels, by the in  intermediate steels slid vertically in the loops coming out of  on the other hand, to continuously resume efforts  steels, low, high edges, and gussets. 4 - Device according to claim 3). Characterized by the fact that  the are arranged on the inner edge of the ribs, to fix it  the internal formwork of the post. 5 - Device according to claim 1). Characterized by the fact that gous  sets of angles make it possible to remove the intermediate ribs, thereby  makes the openings (Doors - Windows - Windows) are placed without pro  problems in the signs. 6 - Device according to claim 5). Characterized by the fact that  are placed on the perimeter of the openings, inside of the  cheek, for fixing joinery.