FR3134569A1 - Modular container forming construction site debris bin - Google Patents

Abstract

Metal modular system for forming a temporary and reusable construction site debris bin, the modular system comprising a front module (1), with a bottom wall (10) and three vertical side walls (11,12,13), a module (2) rear, with a bottom wall (20) and three vertical side walls (21,22,23), one or more intermediate module (3), with a bottom wall (30) and two vertical side walls (32) ,33), each of said modules having its smallest dimension (L0) less than 4 meters, the modular system being adapted to form: - either a basic size tank, in which a first module is assembled with a second module, to a circumscribed volume of at least 40 m3, - i.e. a tank of increased size, with an additional intermediate module, each of the walls of the modules comprising a thick metal sheet backed by a frame formed by stiffening profiles. Figure for abstract: Fig. 8

Description

Modular container forming construction site debris bin Background and prior art

The present invention generally relates to pits and bins used on public works sites as a temporary storage container for materials to be evacuated. These are in particular pits or tanks of large volumes, i.e. in practice more than 50 m3, often with a capacity of between 100 and 150 m3.

It is customary to form such a pit from one or more concrete elements, installed on a previously formed base.

The inventors sought to offer a reusable solution with a lower carbon footprint.

A need therefore emerged to offer a solution other than concrete.

To this end, a metal modular system is therefore proposed to form a construction site debris bin (10), the bin having to be assembled at the start of the construction site and disassembled at the end of the construction site, the modular system thus being reusable,

the modular system including:

- a first module (1) called "front", the first module comprising a first bottom wall (10) and three vertical side walls (11,12,13), the front wall (11) comprising with an access recess (7),

- a second module (2) called “rear”, the second module comprising a second bottom wall (20) and three vertical side walls (21,22,23),

- one or more third module(s)(3) called “intermediate”, the third module comprising a third bottom wall (30) and two vertical side walls (32,33),

each of said modules being circumscribed in a parallelepiped having its smallest dimension (L0) less than 4 meters,

the modular system being adapted to form:

- either a basic size tank, in which a first module is assembled with a second module, the basic size tank delimiting a circumscribed volume of at least 40 m3,

- either a tray of increased size, with a first module assembled with one or more third module(s) and assembled with a second module,

each of said walls of said modules comprising a thick metal sheet backed by a frame formed by stiffening profiles (6).

Thanks to these arrangements, the size of the modules allows their transport by road on a truck, and consequently the reuse of the modular system to form a new spoil bin on another site. We also note that the size of the tank formed using the modules of the modular system can be chosen according to need. In fact, you can use an intermediate module, 2 intermediate modules, 3 intermediate modules or no intermediate module.

Please note that minimal preparation is required to install and assemble the proposed tray.

The stiffening profiles give significant robustness to the containers thus formed, to support several cases of loading the container, on the interior side and/or the exterior side.

In various embodiments of the invention, it is possible to additionally use one and/or the other of the following arrangements, taken individually or in combination.

According to one aspect, the metal sheet is located on the interior side relative to the stiffening profiles. This results in a generally smooth surface inside, suitable for filling, emptying and cleaning the interior of the tank.

According to one aspect, the bottom walls of the modules once assembled together form a flat surface without substantial roughness, and the vertical walls of the modules once assembled together form a flat surface without substantial roughness. As a result, the volume available in interior space of the tank is substantially parallelepiped. This provides ease of shoveling with a backhoe bucket, and easy scraping with the bucket. All contents can be removed, especially before dismantling.

According to one aspect, each of said modules is circumscribed in a parallelepiped having its smallest dimension (L0) less than 3 meters. This allows transport by road with a special light convoy and relatively light constraints.

According to one aspect, each of said modules is circumscribed in a parallelepiped having its smallest dimension (L0) less than 2.5 meters. This allows transport by road in a normal convoy, without the need for authorization or special accompaniment.

According to one aspect, lifting rings are provided on each of the modules. The modules can thus be moved by crane.

According to one aspect, the access recess (7) of the first module comprises retractable barriers (71) forming a guardrail. By means of which we ensure the safety of the companions.

In one aspect, permanent slings are provided. The slings are captive and therefore cannot be lost. Each such sling can be stored against the vertical side wall of the module, on the exterior side.

According to one aspect, each module is assembled to an adjacent module by an assembly system comprising at least one, preferably four hooks, each hook bearing on a hook stop arranged in the opposite module. Advantageously, we thus have a simple assembly during descent by crane.

According to one aspect, a system of extensions is provided on the upper edges of the modules. This provides a splash retention function that can occur when liquid or a viscous fluid is poured into the tank from a certain height.

According to one aspect, a seal system is provided to form a seal at the interface between two modules. This allows liquid effluent to be contained inside the tank and prevents polluting the underlying soil.

According to one aspect, the reinforcement formed by stiffening profiles comprises vertical stiffening profiles and horizontal stiffening profiles connected together by welding. A very robust mesh network is thus formed.

According to one aspect, the stiffening profiles have a section with a dimension in each of the two transverse directions at least equal to 100 mm.

According to one aspect, in the tray thus formed, the interior faces of two walls of adjacent modules are flush with each other. Shoveling is thus made easier, there are no rough edges, joints or steps.

Other aspects, aims and advantages of the invention will appear on reading the following description of an embodiment of the invention, given by way of non-limiting example. The invention will also be better understood with reference to the attached drawings in which:

- Figures 1 and 2 illustrate, in perspective view from two opposite points of view, the first module

- Figures 3 and 4 illustrate, in perspective view from two opposite points of view, the second module,

- there illustrates the third module in perspective,

- there illustrates in perspective the assembled tray in its basic size/dimension, without intermediate module,

- there illustrates the installation process of the modular system by forming the tray and with backfilling in a semi-buried configuration,

- there illustrates in perspective a tray assembled in a version with an intermediate module,

- there illustrates in more detailed top view an example of a join interface between two adjacent modules,

- there illustrates in more detailed view from above another example of interface, joint and mechanical connection, between two adjacent modules,

- there illustrates in more detailed front view an example of a mechanical connection interface between 2 adjacent modules,

- there illustrates a tray assembled in a version with two intermediate modules,

- Figures 13A and 13B illustrate two cases of different loading.

In the different figures, the same references designate identical or similar elements. For reasons of clarity, certain elements may not be represented to scale.

With reference to Figures 1 to 6 , a modular container forming a construction site debris bin is described. This is a large volume container used for example on earthworks or construction preparation sites.

Such a spoil bin serves as temporary storage to store different materials to be removed from the site. The materials in question can be granular, homogeneous or not, viscous, or even liquid. Trucks come to unload their contents into the spoil bin. A little later, an excavator collects this excavated material to load it into other road trucks for remote evacuation to a reprocessing or landfill site.

The useful volume of such a spoil bin is in practice much greater than 50 m3, often with a capacity of between 100 and 150 m3, without excluding going beyond. The notation m3 corresponds to cubic meter ie m ³ .

The excavated bin is generally used in a semi-buried configuration, namely, as illustrated in Figures 7D and 13A, with a backfill of backfill material on the outside of the bin on a height HR depending on the site, for example at half the height. total height H1 or a little more.

The spoil bin presented here is made essentially of metal.

The spoils bin presented here is a modular system. In fact, it is formed by the assembly of 2 modules, 3 modules, or 4 modules. An assembly with more modules is also not excluded.

The first module is illustrated in Figures 1 and 2 . The first module 1 comprises a first bottom wall 10 , intended to be positioned substantially horizontally in the position of use.

The first module comprises three vertical side walls ( 11 , 12 , 13 ). A front wall 11 is provided on the side from which trucks will be able to unload contents and the excavator will be able to access the interior volume of the modular bin.

We define a longitudinal direction denoted X perpendicular to the front wall 11 . According to this point of view, the first module is therefore the “front” module or the frontal module.

The first module 1 comprises a left side wall 13 and a right side wall 12 , these two walls delimiting the tank along a transverse direction Y , perpendicular to X.

At the top of the left and right side vertical walls, ie on the upper edges, lifting rings 41 , 42 , 43 , 44 are provided.

More precisely, the right side wall 12 is delimited by an upper edge to the ends of which a first lifting ring 41 and a second lifting ring 42 are respectively attached. The same configuration is found on the upper edge of the left side wall 13 .

It is thus possible to lift the first module 1 very reliably and securely at least by means of a configuration with four attachment points as known per se.

The dimensions of the first module 1 are in the example illustrated: height H1 , small width along X: L0 , large width along Y: L1 .

H1 is between 2 m and 5 m. Preferably H1 can be between 3 m and 4.5 m.

L1 is between 4 m and 7 m. Preferably L1 can be between 5 m and 6 m.

L0 is between 2.5m and 4m.

The circumscribed volume is between 25 m3 and 50 m3.

The first module 1 is circumscribed in a parallelepiped having its smallest dimension formed by the small width L0 .

Generally, L0 is chosen less than 4 meters, so that the module can be transported by road transport.

According to certain achievements,L0is chosen less than 3 meter. This is suitable for special convoys with light or moderate signaling and constraints.

According to other achievements,L0is chosen less than 2.5 meters. This is suitable for standard road convoys without any particular travel constraints.

Note that L0 is the smallest dimension of each of said modules. If we circumscribe the module in a parallelepiped, L0 is the smallest dimension of the parallelepiped.

The front wall 11 includes an access recess denoted 7 .

The height H7 of the recess can typically be between 75 centimeters and 125 cm.

The recess is limited towards the bottom by the edge 70 .

It can be planned to secure this access to the ferry by retractable barriers 71 . Once the barriers are in place, they form a guardrail to prevent people from falling to the bottom.

Alternatively, the recess can be closed using retractable, pivoting or sliding gates.

To carry out unloading maneuvers in the bin or recovery with a backhoe, the barriers 71 or gates are retracted to allow free passage.

The first module 1 is constructed from a thick metal sheet 16 backed by a frame formed by stiffening profiles 6 .

More precisely, the thick metal sheet 16 is a common steel sheet having a thickness of between 10 mm and 16 mm.

The stiffening profiles are H , I , U , or Z section profiles.

The stiffening profiles 6 are made of standard steel. As illustrated in , the transverse dimensions D1 and D2 in the direction of elongation of the profiles are at least equal to 100 mm. According to an example, we will choose profiles with transverse dimensions D1 D2 between 140mm and 180 mm.

In addition, the reinforcement formed by stiffening profiles comprises vertical stiffening profiles and horizontal stiffening profiles connected together by welding. They thus form a mesh network on which the thick sheet 16 is pressed.

The spacing between two neighboring profiles, both vertically and horizontally, is for example between 45cm and 60cm.

The metal sheet 16 is located on the interior side relative to the stiffening profiles 6 .

With reference to Figures 3 and 4 , the modular system comprises a second module 2 , which in contrast to the first is described as a “rear” module.

The second module 2 comprises a second bottom wall 20 , intended to be positioned level with the first bottom wall, substantially horizontal in the position of use.

The second module 2 comprises three vertical side walls ( 21 , 22 , 23 ), including a rear wall 21 which delimits the interior volume of the tank along the longitudinal direction X.

The second module 2 comprises a left side wall 23 and a right side wall 22 , each intended to be aligned with the respective left and right side wall of the first module.

The second module comprises, similarly to the first module, lifting rings arranged at the four upper corners.

The second module also includes hooks 8 which will allow the assembly of one module to another as will be seen later.

In the example illustrated, the dimensions of the second module are generally identical to the dimensions of the first module. In particular, the small width L0 is chosen for road transport according to a more or less specific mode as explained above.

There illustrates an intermediate module 3 or interlayer module, which is called in this document third module 3 .

The third module comprising a third bottom wall 30 and two vertical side walls ( 32 , 33 ). The vertical side walls are parallel to a plane XZ .

The third module comprises, similarly to the other modules already described, lifting rings 41 , 42 , 43 , 44 arranged at the four upper corners.

In addition, optionally, it is planned to have permanent slings 40 . For example, in the illustrated embodiment, the permanent sling 40 has a length of 3 m to 5 m, with one of its ends attached to the first lifting ring 41 and the other of its ends attached to a second ring lifting 42 .

There illustrates a tray 101 of basic size (ie basic dimensions), namely with a first module 1 assembled directly to a second module 2 .

The mechanical assembly between the two modules is carried out by a system of hooks 9 which are caught behind a hook stop denoted 8 which will be seen in detail in relation to the figures 10 and 11 .

The first bottom 10 and the second bottom 20 are contiguous and flush with each other. The right side walls 12 and 22 are contiguous and flush with each other. The left side walls 13 and 23 are contiguous and flush with each other.

The two modules are assembled together at a joint plane denoted PJ . The details of the interface at the location of this joint plane will be detailed later.

The length in the longitudinal direction of the base tray 101 and denoted LB1 ; and substantially twice the small width L0 .

The width L1 of the base tray in the transverse direction is equal to the width L1 of each of the modules.

The interior volume of tank 101 is typically between 50 m3 and 80 m3.

Note that there are a total of eight lifting rings on the upper area of the base tray 101 .

There illustrates a tray 102 of larger size, namely with a first module 1 assembled to a third module 3 which is assembled to a second module 2 .

The mechanical assembly between two neighboring modules is carried out by a system of hooks 8 which are caught behind a hook stop 9 which will be detailed in relation to the figures 10 and 11 .

The first bottom 10 , the third bottom 30 and the second bottom 20 are contiguous and flush with each other in an XY plane. The right side walls 12, 32 and 22 are contiguous and flush with their respective neighbors. The left side walls 13, 33 and 23 are contiguous and flush with their respective neighbors.

The three modules are assembled two by two to each other at the level of a joint plane denoted PJ . The details of the interface at the location of this joint plane will be detailed later.

The length in the longitudinal direction of tray 102 and denoted LB2 ; LB2 is substantially three times the small width L0 .

The width L1 of the base tray in the transverse direction is equal to the width L1 of each of the modules.

The interior volume of tank 102 is typically between 90 m3 and 120 m3.

Note that there are a total of twelve lifting rings in tank 102 with an intermediate module.

There illustrates the process of installing and assembling the spoils pan for the modular system promoted here. For this illustration, a tray similar to that shown in the illustration was chosen. .

First of all, we level the ground 19 with a backhoe. This leveling 19 can be quite rough, it just needs to be generally level.

Then we position a first module 1 . It is lowered to the ground by crane, for example by means of a system of permanently captive slings 40 .

Then a third module 3 is brought close to the first module 1 and it is gradually lowered against the first module 1 so that the mechanical connection system then ensures the assembly between the two modules placed first.

Then a second module 2 is brought close to the third module 3 and it is gradually lowered against the third module 3 so that the mechanical connection system then ensures the assembly between the two modules.

Then we backfill the periphery of the tank to a height HR .

Alternatively, we could start by installing the bottom module (second module 2) and then assemble the third module 3 and then assemble the first front module 1.

There illustrates in horizontal section the joining interface between two neighboring modules. The left module in the figure includes the thick metal sheet 16 interrupted at the edge located near the joint plane PJ . At this location on the exterior side is placed a stiffening profile 6 . In the example illustrated it is an IPN having the dimension of its core D1 and the other dimension D2 . On the right side of the figure, the neighboring module comprises by symmetry another thick metal sheet interrupted at the level of the edge located near the joint plane fixed to another stiffening profile 6.

The two IPN profiles face each other and together delimit an internal space into which expansive polyurethane resin 50 is injected. This makes it possible to form a seal at the joint plane between two neighboring modules. The internal space formed between the two cores of the facing profiles is not completely closed but still allows the expansion of the foam to be directed and confined so that it first fills the internal space before drain inwards and/or outwards.

Still regarding waterproofing, illustrates an alternative where each of the interior spaces of the I of the IPNs which face each other includes an elastic joint. More precisely the left profile on the comprises a first elastic joint 51 and the second profile, on the right on the comprises a second elastic joint 52. During assembly the two elastic joints are forced against each other.

This elastic seal can be formed from any elastomeric material.

An example of mechanical coupling or mechanical coupling between two neighboring modules is illustrated in Figures 10 and 11. A hook 8 is welded to the exterior side of the IPN profile. This hook comprises a body 81 extending horizontally towards the neighboring module and a leg 82 extending from this body downwards.

On the opposite side of the module, a robust tab is provided extending outwards along Y. This tab forms a hook stop 9 . This leg can be shaped like an ear or a U-shaped rod.

This assembly system prevents one module from moving backwards in relation to the other. It also allows vertical Z axis alignment.

There are two hooks, one at the bottom and one at the top, on each side. Which makes four hooks per module as visible in the , on a first interface zone with another module.

In addition, in addition to these four hooks, four hook stops 9 are provided on a second interface zone, opposite the first for coupling to another module, in position correspondence with the hooks to be received. The lower hooks are at a distance from the bottom of between 30 cm and 80 cm, and the upper hooks are at a distance from the upper bank of between 30 cm and 100 cm.

Of course, another assembly system can be considered, for example a tenon received in a groove forming a mortise. Also, a system with a lever to turn or a lock to move may be suitable for locking the relative position.

Note, however, that the system with hooks and stops illustrated does not require any human intervention against the tray, but only a crane operation, the safety of the operators is thus guaranteed.

There illustrates a tray 103 of even larger size, with two intermediate modules. The tray 103 therefore comprises a first module 1 assembled to a third module 3 which is assembled with another third module 3 which is assembled to a second module 2 .

The four modules are assembled two by two to each other at the level of the adjoining joint plane as described previously by a system of hooks 8 which engage behind a hook stop 9.

The first bottom 10 , the third bottom 30 and the second bottom 20 are contiguous and flush with each other in an XY plane. Likewise, the right side walls are contiguous and flush with their respective neighbors. Also, the left side walls are contiguous and flush with their respective neighbors.

The length in the longitudinal direction of tank 103 and noted LB3 ; LB3 is substantially equal to four times the small width L0 .

The width L1 of the base tray in the transverse direction is equal to the width L1 of each of the modules.

The interior volume of tank 103 is typically between 110 m3 and 150 m3.

Note that there are a total of sixteen lifting rings in tank 103 with two intermediate modules.

We illustrated at , two different loading cases to which the spoil bin can be subjected.

In the configuration of Figure 13A, the tank is empty and the height of the embankment HR is between 1m60 and 2m.

It is also expected that there may be heavy elements P1 installed on the ground near the tank.

The network of stiffening profiles allows the tank not to bend substantially inwards, even without the presence of props in the interior volume of the tank.

In the configuration of Figure 13B, the height of the HR embankment is more modest and the tank is completely filled. The high sides of the tank do not bend outwards given the robustness of the network of stiffening profiles.

According to another configuration, the backfill is not present, ie the backfill height HR is zero. Captive slings can be installed on each module.

The network of stiffening profiles is present not only on the external lateral faces but also under the bottom wall, with a spacing between two neighboring profiles, which can be tighter in the lower zone.

Preferably a vertical profile is concurrent with a horizontal profile arranged under the bottom, so as to be able to create a junction zone 66 at the intersection location. At this junction zone 66 , a very robust weld is provided, without excluding the addition of a reinforcing bracket. This ensures orthogonality between the vertical walls and the bottom wall, the bottom wall taking up a significant part of the bending forces exerted on the vertical walls.

Claims (12)

1 . Modular metal system to form a construction site debris bin, the bin having to be assembled at the start of the construction site and disassembled at the end of the construction site, the modular system thus being reusable,
the modular system including:
- a first module (1) called "front", the first module comprising a first bottom wall (10) and three vertical side walls (11,12,13), the front wall (11) comprising with an access recess (7),
- a second module (2) called “rear”, the second module comprising a second bottom wall (20) and three vertical side walls (21,22,23),
- one or more third module(s)(3) called “intermediate”, the third module comprising a third bottom wall (30) and two vertical side walls (32,33),
each of said modules being circumscribed in a parallelepiped having its smallest dimension (L0) less than 4 meters,
the modular system being adapted to form:
- either a basic size tank, in which a first module is assembled with a second module, the basic size tank delimiting a circumscribed volume of at least 40 m3,
- either a tray of increased size, with a first module assembled with one or more third module(s) and assembled with a second module,
each of said walls of said modules comprising a thick metal sheet backed by a frame formed by stiffening profiles (6). 2. Modular system according to claim 1, in which the metal sheet is located on the interior side in relation to the stiffening profiles. (Smooth surface inside). 3 . Modular system according to claim 2, the bottom walls of the modules once assembled together form a flat surface without substantial roughness, and the vertical walls of the modules once assembled together form a flat surface without substantial roughness. 4 . Modular system according to one of claims 1 to 3, in which each of said modules is circumscribed in a parallelepiped having its smallest dimension (L0) less than 2.5 meters. 5 . Modular system according to one of claims 1 to 4, in which lifting rings are provided on each of the modules. 6 . Modular system according to one of claims 1 to 5, in which permanent slings are provided. 7 . Modular metal system according to one of claims 1 to 6, in which the access recess (7) of the first module comprises retractable barriers (71) forming guardrails. 8 . Modular system according to one of claims 1 to 7, in which each module is assembled to an adjacent module by an assembly system comprising at least one, preferably four hooks, each hook bearing on a hook stop arranged in the facing module. 9 . Modular system according to one of claims 1 to 8, in which a system of extensions is provided on the upper edges of the modules. 10 . Modular system according to one of claims 1 to 9, in which a seal system is provided to form a seal at the interface between two modules. 11 . Modular system according to one of claims 1 to 10, in which the reinforcement formed by stiffening profiles comprises vertical stiffening profiles and horizontal stiffening profiles connected together by welding. 12 . Modular system according to one of claims 1 to 11, in which in the tank thus formed the interior faces, respectively bottom and side, of two walls of adjacent modules, are contiguous and flush with each other.