FR2844287A1 - Method for constructing wall buy pouring concrete utilizes casing placed on building surface and held in upright position by ballasting units and props - Google Patents

Abstract

The method for constructing a wall by pouring concrete utilizes a casing (1) placed on a building surface (S) and retaining elements for holding the casing in the upright position. The retaining elements comprise one or more ballasting units (2) and props (311,312) by means of which the casing is supported on each unit. Independent claims are included for a ballasting unit and an installation using the unit.

Description

METHOD OF BUILDING A WALL BY CASTING, BLOCK OF

  BALLAST FOR ITS IMPLEMENTATION, AND INSTALLATION USING SUCH A BLOCK.

  The invention relates generally to the building and

construction techniques.

  More specifically, the invention relates, according to a first of its aspects, to a method of building a wall by pouring, comprising a formwork operation in which a sheet laid on a surface

  buildable is maintained in the upright position.

  The invention, which is based on the observation that

  certain site configurations make the problem of stabilizing the formwork during the pouring and drying of the concrete very difficult to solve, is precisely intended to provide a simple and effective solution to this problem.

  To this end, the method of the invention, moreover in accordance with the generic definition given by the above preamble, is essentially characterized in that the sheet is held by means of at least one ballast block placed on the buildable surface at a distance from this form, and of a pair of props each of which is mounted in a spacer between a lashing point belonging to the ballast block and a support point of the form distant from the buildable surface , each lashing point being made fixed relative to the buildable surface by the weight of the ballast block and by the coefficient of friction of the ballast block on the buildable surface. The invention therefore also relates to a ballasting block for the implementation of the method defined above, this block being mainly characterized in that it comprises a plate, stacking studs projecting from a first face of the plate. , distributed according to a determined distribution, and defining a support polygon for this block, and housings formed in a second face of the plate, distributed according to the determined distribution, and dimensioned to receive stacking pads from a ballast block

  identical and belonging to the same stack.

  In the preferred embodiment of the ballast block according to the invention, each housing is formed on the back 15 of a stacking pad.

  The tray of this ballast block has for example an elongated shape extending between first and second main ends of this tray, on either side of a median zone, and the stacking pads are distributed over first and second intermediate zones of the plate, respectively arranged between the middle zone and the first and second

main ends.

  More specifically, this ballast block advantageously comprises first and second pairs of stacking pads respectively disposed in the first and second intermediate zones of the tray, the pads 30 of each pair being connected to each other by a

lifting bar.

  Furthermore, the ballast block of the invention is preferably made of metal or a metal alloy and usefully comprises first and second lashing points respectively arranged at the first and

  second main ends of the tray.

  Finally, the invention relates to an installation for building a wall by pouring, comprising a sheet placed on a buildable surface, and holding elements for keeping the sheet in an upright position, this installation being mainly characterized in that the retaining elements comprise at least a first ballast block and at least a first pair of stays, each ballast block having an elongated shape, extending in a main dimension between first and second main ends, and having first and second lashing points respectively disposed at the first and second main ends of this block, and each pair of stays comprising first and second stays respectively mounted in a spacer between the first 20 and second lashing points of a block of ballast and the first and second support points of the form, distant

of the buildable area.

  According to a first possible mode of use of the ballast block, the installation comprises a ballast block the main dimension of which is parallel to the form, and the first and second support points of the form are made , on which are respectively mounted the first and second stays fixed on the first and second respective lashing points of this block, are spaced from each other according to the

  main dimension of this ballast block.

  According to a second possible mode of use of the ballast block, the installation comprises first and second ballast blocks, the main dimensions of which are perpendicular to the sheet, and the first and second support points are arranged of the sheet, on which are respectively mounted the first and 5 second props fixed on the first and second respective lashing points of each of these blocks, are spaced from each other in a vertical direction. Other characteristics and advantages of the invention

  will emerge clearly from the description which is given below, by way of indication and in no way limiting, with reference to the appended drawings, in

  which - Figure 1 is a perspective view of an installation for building a wall by pouring, according to a first embodiment of the invention - Figure 2 is a perspective view of an installation for building a wall by pouring, according to a second embodiment of the invention - Figure 3 is a top view of a ballast block of the type used in the installation illustrated in Figure 1 and that used in Figure 2; - Figure 4 is a side view of two ballast blocks as illustrated in Figure 3, and - Figure 5 is an end view of a ballast block

as shown in Figure 3.

  As previously announced, the invention relates to techniques for building walls by pouring, two typical installations of the invention being illustrated.

in Figures 1 and 2.

  In known manner, such an installation comprises a panel 1 placed on a buildable surface S, and holding elements for maintaining the panel 1 in

upright position.

  According to the invention, these retaining elements comprise one or more ballast blocks such as 2 (FIG. 1), 2a and 2b (FIG. 2), and one or more pairs of props, such as the pair 31 formed by the props 15 311 and 312, and the pair 32 formed by the struts 321 and

322 (Figure 2).

  Each of the ballast blocks 2, 2a and 2b is preferably made of metal or a metal alloy, and has an elongated shape along a main dimension L.

  Furthermore, each ballast block has, at its main ends 211 and 212, corresponding lashing points 221 and 222.

  The struts of each pair of struts, namely the struts 311 and 312 of the pair 31 (FIGS. 1 and 2), and the struts 321 and 322 of the pair 32 (FIG. 2), are respectively mounted as a spacer between the points

  221 and 222 for securing a ballast block, such as 2, 2a or 2b, and corresponding support points of the panel 1, distant from the buildable surface S, such as support points 11 and 12 (Figure 1), or the 35 support points 11a, 12a and lib, 12b (Figure 2).

  In the case, illustrated in FIG. 1, of formwork of lesser height, the installation may comprise only a ballasting block 2 arranged so that its main dimension L is parallel to the form 1.

  In this case, the support points 11 and 12 of the panel 1, on which the struts 311 and 312 are respectively mounted, are spaced from one another along the main dimension L of this ballast block 2.

  On the other hand, in the case, illustrated in FIG. 2, of formwork of greater height, the installation rather comprises two ballast blocks 2 arranged in such a way that their main dimension L is

perpendicular to the form 1.

  In the latter case, the support points 11a and 12a of the panel 1, on which are respectively mounted the props 311 and 312 fixed on the lashing points 221 and 222 of the first block 2a, are spaced one of the other in the vertical direction V. Likewise, the support points llb and 12b of the panel 1, 25 on which the struts 321 and 322 respectively fixed on the lashings 221 and 222 of the second block 2b, are spaced from each other in the vertical direction V. In such installations, and as the skilled person will have understood on reading the above, this is therefore the weight of the ballasting block 2 , and the coefficient of friction of the ballast block 2 on the buildable surface S, which make it possible to keep fixed relative to the buildable surface S the lashing point 221 or 222 of each stay, each block of

  ballast weighing for example 2 tonnes.

  The ballast block used in these installations is illustrated in FIGS. 3 to 5. Such a block essentially comprises a tray 20, stacking pads such as 231, 232, 241 and 242, and

  dwellings such as 251, 252, 261, and 262.

  The stacking pads 231, 232, 241, and 242 project from the upper face 201 of the plate 20 and define

  a lift polygon for this block.

  Slots 251, 252, 261, and 262 of each block of

  ballast are formed in the lower face 202 of the plate 20 of this block and are dimensioned to receive stacking pads of an identical and adjacent ballast block, forming a stack with the first 20.

  To do this, the housings 251, 252, 261, and 262 therefore have the same spatial distribution as the stacking pads, each housing 251, 252, 261, and 262 25 being for example formed on the back of a stacking pad

  corresponding 231, 232, 241, and 242.

  As best shown in Figure 3, the plate 20 of each ballast block has an elongated shape 30 showing a middle zone Zm and two intermediate zones Zil and Zi2 each of which is defined between the middle zone Zm and one of the two extremities

  main 211 and 212 of this plateau.

  The stacking pads 231, 232, 241, and 242 form two pairs of pads, 23 and 24, respectively distributed over

  the intermediate zones Zil and Zi2 of the plateau.

  Finally, as best shown in Figures 3 and 5, the pads of each of the pairs 23 and 24 are connected to each other by a corresponding lifting bar 27 and 28, allowing the lifting of the ballast block

  corresponding by means of a sling.

Claims (10)

CLAIMS.   1. A method of building a wall by pouring, comprising a shuttering operation in which a sheet (1) placed on a buildable surface (S) is kept in the upright position, characterized in that the sheet (1) is maintained by at least one ballast block (2, 2a, 2b) placed on the buildable surface 10 (S) at a distance from this form (1), and a pair of props (311, 312) of which each is mounted in a spacer between a lashing point (221, 222) belonging to the ballast block (2) and a support point (11, 12) of the form distant from the buildable surface (S), each 15 point lashing (221, 222) being made fixed relative to the buildable surface (S) by the weight of the ballast block (2) and by the coefficient of friction of the ballast block (2) on the buildable surface (S) . 2. Ballast block for implementing the method according to claim 1, characterized in that it comprises a plate (20), stacking pads (231, 232, 241, 242) projecting from a first face 25 (201) of the plate (20), distributed according to a determined distribution, and defining a support polygon of this block, and of the housings (251, 252, 261, 262) formed in a second face (202) of the plate (20 ), distributed according to the determined distribution, and 30 dimensioned to receive stacking pads of an identical ballasting block and belonging to the same stack. 3. Ballast block according to claim 2, 35 characterized in that each housing (251, 252, 261, 262) is formed on the back of a stacking pad (231, 232, 241, 242).   4. Ballast block according to any one of claims 5 and 3, characterized in that the plate   (20) has an elongated shape extending between first and second main ends (211, 212) of this plate, on either side of a median zone (Zm), and in that the stacking pads ( 231, 232, 241, 10 242) are distributed over first and second intermediate zones (Zil, Zi2) of the plate, respectively arranged between the middle zone (Zm) and the first and   second main ends (211, 212).   5. Ballast block according to claim 4, characterized in that it comprises first and second pairs (23, 24) of stacking pads (231, 232, 241, 242) respectively arranged in the first and second intermediate zones ( Zil, Zi2) of the plate, and 20 in that the studs (231, 232; 241, 242) of each pair (23; 24) are connected to each other by a bar lifting (27, 28).   6. Ballast block according to any one of claims 4 and 5, characterized in that it comprises   first and second lashing points (221, 222) respectively disposed at the first and second   main ends (211, 212) of the plate (20).   7. Ballast block according to any one of   claims 2 to 6, characterized in that it is   made of metal or metal alloy.   8. Installation for building a wall by pouring, comprising a form (1) placed on a buildable surface (S), and holding elements for holding the form (1) in the upright position, characterized in that the retaining elements comprise at least a first ballast block (2, 2a) 5 and at least a first pair of stays (311, 312), each ballast block (2, 2a) having an elongated shape, extending along a main dimension (L) between first and second main ends (211, 212), and having first and 10 second lashing points (221, 222) respectively disposed at the first and second main ends (211, 212) of this block, and each pair (31, 32) of props comprising first and second props (311, 312; 321, 322) respectively mounted as a spacer between the first and second lashing points (221, 222) of a ballast block (2, 2a) and first and second support points (11, 12; lia, 12a; llb, 12b) of the branch (1),   distant from the building surface (S).   9. Installation according to claim 8, characterized in that it comprises a ballast block (2) whose main dimension (L) is parallel to the formwork (1), and in that the first and second support points (11, 12) of the formwork (1), on which are respectively mounted the first and second stays (311, 312) fixed on the first and second lashing points (221, 222) respectively of this block, are spaced one of the other according to the main dimension (L) of this block ballast (2).   10. Installation according to claim 8, characterized in that it comprises first and second ballast blocks (2a, 2b) whose main dimensions (L) are perpendicular to the form (1), 35 and in that the first and second support points (lia, Il 12a; llb, 12b) of the formwork (1), on which are mounted the first and second stays respectively (311, 312; 321, 322) fixed on the first and second points d 'securing (221, 222) respective of each of these 5 blocks, are spaced from each other according to a vertical direction (V).