EP2463449B1 - Structure body for a trenching system and trenching system - Google Patents

Description

The invention relates to a structural body for a trench system, which has an open, three-dimensional structure, wherein a base grid is provided, from which a plurality of hollow, upwardly tapering, in particular a perpendicular to the base grid symmetry axis having support members rises such that several Structural body by bottom-side insertion of the support members of a lower structural body in the support members of the upper structural body are nestable. In addition, the invention relates to a rig system with such structural bodies.

Underground facilities, which serve the infiltration, retention and possibly also storage and use of water, especially rainwater, are called trenches. Rigolene systems are used, for example, when large quantities of rainwater are discharged from a non-infiltratable area, which should be distributed as far as possible below the surface or at another location for infiltration.

In this case, modular rigging systems are known which can be realized in any size from a plurality of, in particular the same, structural bodies or percolation / storage boxes. Depending on requirements, one or more horizontal levels of structural bodies are introduced into the soil and surrounded by a geotextile or a geomembrane, which is intended to prevent the penetration of soil into the trench system or the escape of water from the trench system. Depending on the application, the trench system also has at least one inflow and / or at least one outflow, which serve for feeding or discharging water.

In this case, plastic structural bodies produced as injection molded parts are mostly used as infiltration / storage boxes which are substantially hollow, ie at least partially fluid-permeable (ie permeable). The structural body may for example consist of polyethylene or polypropylene.

A major problem of such structural body is to achieve the lowest possible assembly costs on the site while maintaining high reliability and low transport volume. Especially with larger rig systems or systems in which many structural bodies are needed to fill the required volume, a low transport volume to reduce costs and effort is desirable.

In this case, for example, nested stackable (nestable) structural bodies have been proposed in such a way that starting from a floor frame a truncated pyramidal tapered continuous wall structure was provided with individual struts, which was completed by a cover grid. From the grille are down in the vertical direction, ie within the shaped side walls, hollow truncated cones, which are staggered and also tapered. Partially overlapping with the open foot portions of the truncated cones are provided in the known structural body also offset provided recordings in the cover grid.

The arrangement of the truncated cones and the receptacles is now selected, as in the case of rotating / stacking containers, such that, given the orientation of the truncated cones in the same direction, there are two possibilities for arranging the structural bodies one above the other. On the one hand, the truncated cones of the upper structural body can engage in the openings of the truncated cones of the lower structural body, so that due to the obliquely set side walls, a saving of at least a part of the volume of a structural body nesting of the structural body is possible. If the upper structural body is lifted off and rotated by 180 ° about a vertical axis, the tips of the truncated cones can engage in the offset receptacles, so that the structural bodies can be reproduced in their full volume. Such a system is obtained, for example, under the name "Waterloc 250" from Friatec AG, Mannheim, or from the US 2009/0250369 A1 known.

However, this solution proposed in the prior art has some massive disadvantages. On the one hand arise due to the sloping side walls at the margins of the rigging system gaps in which the structural body surrounding Geovlies can be pressed, with the risk also exists that the Geovlies is damaged in this process or even in contact with the structured side walls and thus soil can penetrate. Another disadvantage of the known structural body is that the truncated cones do not follow one another directly in the vertical direction, so that only a low stability is given under load. Finally, a space-saving nesting of the structural body is only partially possible because, in particular due to the angular restriction of the side walls, a structural body can not be sunk so far in the other that the frames rest on each other.

The known structural body has overall limitations in terms of stability and saving of transport volume. Out GB2417733A discloses a structural body for a drainage system comprising the features of the preamble of claim 1.

The invention is therefore based on the object to provide a structural body and a rig system, which in contrast offers improved stability in space-saving transport.

To solve this problem, a structural body for a rigid system according to claim 1 is proposed.

It is therefore proposed to use a structural body which has only the support elements extending vertically from a base grid, so that no side walls or a further frame are provided. The support elements can be mirror-symmetrical parts about a vertical axis, which have an increased stability compared to (for reasons of nestability) obliquely extending side walls and force laterally no inevitable gaps in which a Geovlies would be pressed. With particular advantage, it can be provided in this embodiment that the support elements are designed such that a plurality of structural body in the same direction with each other immediately following basic grid stackable stackable, so nestable, are. This means that the present invention makes it possible to choose wall thickness and angle of the supporting elements in such a way that a maximum saving of space during transport is made possible.

To form a rigging system, which will be discussed in more detail later, the structural bodies are stacked in opposite directions, which means that either the tops of the support elements abut each other, so that a base grid forms a kind of soil for a percolating unit of two structural bodies and a another basic grid a kind of lid / top closure, or that the basic grid of two structural body abut each other, for example, if more structural body on a percolation unit to be stacked up. So while the structural body can be nested in the same direction to save space in the transport, they are constructed in opposite directions in a rig system. The support elements are in use always directly in a vertical succession, resulting in excellent stability. The structural bodies are thus designed such that, in the case of opposing stacking, the opposing contacting supporting elements of the two structural bodies have common central axes.

In summary, in the context of the present invention, it is therefore proposed that a plurality of support elements arranged in a row, for example conical or truncated pyramids, which are arranged in one plane with the bottom surface open at the bottom, form the load-bearing columns. For transport, these columns are inserted into each other in the same direction and take up so little volume. To produce the much larger storage volume, the columns are placed in opposite directions. As a result, a much lower transport volume is achieved with higher load capacity, and of course, the storage volume is reduced. It also results in a very simple handling in the construction of the trench, after the structural bodies are nested in one another, only need to be pulled apart, whereupon to form, for example, a trench unit of the upper structural body only needs to be rotated by 180 ° about a horizontal axis, so that the structural bodies on top of each other make up their large storage volume.

It should be noted at this point that the structural body in another name can also be referred to as percolation / storage boxes. For example, such percolation / storage boxes can have a base area, ie size of the basic grid, of 800 × 800 mm and a height of 165 mm.

Conveniently, the support elements may at least partially have a round and / or a rectangular and / or a hexagonal and / or an octagonal cross-section. Ultimately, therefore, cone and / or truncated pyramids are most suitable as support elements. Truncated cones, that means carrying elements with a round cross-section, have the advantage that they are the most stable both vertically and laterally, but are less favorable connectable to the base grid. Thus, octagonal cross sections prove to be preferred after coupling to bars in the conventional injection molding is easily possible, but on the other hand, the angles occurring at the corners can be kept quite large.

In a further embodiment of the present invention can be provided that along the sides of the structural body supporting elements in dense packing next to each other, forming the lateral boundary of the structural body, are arranged. In this embodiment, therefore, a plurality of columns are provided at a small distance in the edge regions, the outwardly facing side thus forms a kind of "wall", which can make it possible to geotextile or a film without an additional grid directly under / on / to lay on the structural body. It is particularly advantageous if the support elements provided along the sides have a laterally flattened, outwardly facing side. In this embodiment, it may further be provided that further, homogeneously distributed support elements are provided in the interior space between the carrying elements forming the lateral boundaries of the structural body.

In the context of the present invention, however, it has been found that it may be more advantageous to use an additional side grid element, which will be discussed in more detail in the discussion of the inventive suture system. If such an additional side rail element or side rail is used, the total number of columns can be slightly reduced so that material is saved and the storage volume is increased. In addition, such geotextile or geomembrane-covered boundaries will only be present at the locations where they are actually needed, namely at the outer boundaries of the stacked structural bodies. Finally, disadvantages due to the taper of the support elements are avoided.

In particular, it can then be provided with particular advantage that the support elements are distributed to a vertical central axis of the structural body axially symmetrical and / or homogeneous, in particular matrix-like. This has the advantage that on the one hand it is ultimately irrelevant in which direction the structural body is aligned, on the other hand, however, that it is possible to form a body from the structural bodies to form a body to increase the stability offset also on each other, what will be discussed in more detail with regard to the rig system. For a matrix-like, homogeneous structure can be provided, for example, that four to six support elements are arranged in four to six rows on the particular square base grid, for example, five to five support elements.

Such a symmetrical or homogeneous arrangement of the support elements has the further advantage that it is then particularly possible to enable a further advantageous embodiment of the structural body according to the invention, namely that the structural body is constructed symmetrically such that it in a central vertical cutting in two or four with respect to the distribution of the support elements similar substructure body is divisible. For example, it may thus be provided that the structural body is constructed axisymmetric to a vertical center axis of the base grid. Such results, for example, in the use of six support elements in six rows, because then, for example, four substructure body can be realized with three to three support elements. It should be noted, however, that divisibility is possible even with an odd number of supporting elements in one direction. So it is conceivable, for example, in a five rows with five support elements having structural body to break this into a two to five and a three on five support elements comprehensive structural body. Such a design with a dividable structural body increases the flexibility, in particular also with respect to a staggered arrangement in the trench system and with respect to the volume to be covered by the trench system.

In this context, it is particularly advantageous if at least one, in particular two cutting marks, in particular cutting aids, are provided for separating a structural body into substructure bodies. For example, it may be expedient to provide on the outwardly directed side of the base grid two parallel elevations or grooves between which the cut is to be made. This makes it even easier to make cuts for the flexible adaptation of a rigging system.

In a particularly advantageous embodiment of the present invention can be provided that at least one connecting device is provided for connecting adjacent structural body in a rig system. In this way, the assembly or assembly of a trench system of several structural bodies is significantly simplified after suitable connecting devices are already provided on the structural bodies themselves, so that they are only freed from their nested state, as described in the opposite direction and turned to a must be placed on other structural body, whereupon a stable connection can already be given.

According to the invention, at least one engagement cam and at least one engagement receptacle are provided on an upper surface of at least one support element, wherein the engagement cam is designed for positive engagement in an engagement receptacle of an adjacent structural body of a trench system.

Analog can be provided with respect to the base grid that on the outwardly facing side of the base grid in not occupied by supporting elements areas at least one engagement cam and at least one engagement receptacle are provided, wherein the engagement cam is adapted for positive engagement in an engagement receptacle of an adjacent structural body of a trench system.

Ultimately, therefore, engagement cam and engagement shots are provided, which allow the adjacent arrangement of structural bodies in the vertical direction in the trench system, ie in opposite directions arrangement of the structural body, a "mating" of the structural body. In this case, the arrangement of engagement cam and engagement receptacles on both sides is chosen with particular advantage, regardless of the specific orientation of a structural body always a connection is possible, that is, an engagement cam, no matter how rotated about the vertical axis of the other structural body, always an intervention recording finds. Such can be realized, for example, when on the upper surface of a support member an engagement cam and three engagement shots are arranged. Preference is given to an arrangement of two or four engagement cams which are each assigned adjacent to an engagement receptacle so that an axisymmetric distribution of engagement cams and engagement receptacles is present. With two engagement cams, two further engagement receptacles are arranged axially symmetrically in addition to the adjacently assigned engagement receptacles.

In any rotation by integer multiples of 90 ° or lateral displacement by an integer multiple of a support element spacing is always possible with the aforementioned arrangements engagement of the engagement cam in the corresponding engagement shots.

It may be provided on the base grid that the engagement cams and engagement receptacles ultimately follow one another in rows extending between the support elements, it being possible for the middle or other specific rows to remain cam-free in each case in order to cut the above-described structural body to easily allow in several substructure body. Of course, in both cases, so both for the engagement cam and engagement shots of the support members as well as the engagement cam and engagement shots of the base grid, non-positive connections may be possible, for example clamping connections, but it is also conceivable to provide locking projections or the like, the one fixed, snap connection between vertically adjacent structural bodies allow.

In a further advantageous embodiment, it can be provided that the engagement cams and the engagement receptacles are arranged axisymmetric to a vertical center axis of the structural body. In this way, the symmetry of the structural body is ensured, which is therefore connectable in any (meaningful) horizontal orientation in the vertical direction with another structural body via the connecting device. In the case of a square base area, this means, for example, that a connection remains possible during rotation of a structural body by 90 ° thereafter.

In the case of structural bodies which can be split once or twice in the center, it is particularly advantageous if the engagement cams and the engagement receptacles are furthermore arranged axisymmetrically with respect to a vertical central axis of a quarter of the structural body. In this way, when dividing the structural body in turn four ultimately symmetrical substructure bodies are obtained, which still coincide in a rotation of 90 ° against another structural body with which they are to be connected in the alignment of cams and recordings. In this way, the greatest possible flexibility and simplicity in the assembly of the rigging system from the structural bodies with the square base grid is made possible.

It should be noted at this point that, of course, external, for example, with the structural bodies mitzuliefernde and subsequently attached connecting means can be used, but this is less preferred.

In a further embodiment of the structural body according to the invention can be provided that at least one side, in particular two sides of the base grid at least one hook and on at least one other side, in particular two other sides of the structural body hook receptacles are provided, wherein the hook for positive engagement in the hook receptacles of a laterally adjacent structural body are formed. In this way, a lateral connection of structural bodies to simple Be achieved manner without additional connecting means are required. It should also be noted at this point that of course other, already known from the prior art connection possibilities between laterally adjacent structural bodies are conceivable.

Appropriately, it can be provided that a support element is connected to at least one grid web of the base grid, in particular via connecting ribs. As already stated, a particularly simple coupling of the carrying elements with the stabilizing grid bars is possible if a polygonal basic shape of the carrying element, in particular an octagonal basic shape, is given. Then, the grid web can ultimately connect to one side and be frictionally coupled, for example via connecting ribs with the support member, so as to achieve a further stabilization of the entire structural body.

With particular advantage is further provided that the base grid has a closed stabilizing frame. The basic grid is therefore surrounded at its height with stable frame walls, which contribute to the horizontal stability. It should be noted at this point that the ratio of the height of the base grid to the overall height of the structural body can be about 1: 4 or slightly less.

In addition to the structural body, the invention also relates to a trench system comprising at least two structural bodies according to the invention which can be arranged or arranged adjacent to one another. As already mentioned, significantly improved rigging systems can be constructed from the structural bodies according to the invention in terms of stability and assembly complexity. All statements relating to the structural body according to the invention can be analogously transferred to the invention Rigolensystem. For example, the structural bodies which are interleaved in the same direction for transport and storage can be delivered to a construction site and, as described, stacked in opposite directions for assembly. The individual structural bodies are then usually coated as a whole with a geotextile and / or a film after assembly on the construction site, so as to make the entire storage media-permeable or media-permeable as required.

While it is basically conceivable, in particular in the case of a multiplicity of columns forming the outer boundary of the structural bodies, the nonwoven fabric or the film has no additional effect To apply grid directly to the structural body, it is inventively preferred to use side rail elements, which then form a kind of side rails. Thus, it can be provided that at least one attached to an outer edge of the trench system or to be mounted, in particular at least two vertically arranged as a trench unit superposed structural body spanning element is provided. This is then arranged after stacking the structural body in the desired shape only on the outsides of the total volume. In this case, side grid elements which span two vertically arranged as Rigoleneinheit superposed structural body, have proven to be a particularly suitable size, but of course, other units of side rail elements are conceivable.

It can be provided that a connecting device for attaching the side rail element is provided on at least one base grid of a structural body, in particular on the side rail element and / or the structural body provided latching lugs which engage in openings of the structural body and / or the side grid element. Preferably, the locking lugs are provided on the side rails to avoid protruding parts of the structural body as possible. In such an embodiment, the side rail element can then be simply placed and inserted with the locking lugs until it engages in the structural body, so ultimately "clipped" in a simple installation. It should also be noted at this point that, of course, other connecting devices, for example clamping devices or external connecting means, are also conceivable.

It can further be provided that the side grid element has a frame which, in the installed state, lays against at least one base grid of at least one structural body. Such a framework not only has a leading effect but also stabilizes the entire rigid system. A middle grid of the side grid element may be formed higher than the frame, so that it engages between the base gratings, for example, a percolating unit and the frame rests externally on, in particular, a frame of the base grid. With particular advantage, the latching lugs may be provided at the edge of this frame for the realization of the connecting device, wherein the openings, in which engage the latching lugs, are provided at the bottom of the frame of the base grid.

It is further conceivable that the side rail element is formed increased in central, supporting elements adjacent areas, so that the side grid element protrudes between the base gratings in the structural body and at least partially rests on the support elements. In particular, the increase can follow the tapered shape of the support elements, so as to enable a large-scale investment. In this way, further stabilization can be achieved.

In a further advantageous embodiment it can be provided that the side grid element at least one cutting mark for at least one connection of the trench system to an inflow and / or outflow and / or at least one cutting mark for central (or possibly otherwise) dividing the side grid element into two or four bottom grid elements having. It can thus be provided that a predefined cutting mark is already mounted on the side rail element, which makes it easier to produce an opening for a line, for example an inflow or outflow. However, it is especially expedient if a cutting mark, in particular a cutting aid, is provided for dividing the side grid element into two or four bottom grid elements, since flexibility is then also present with respect to the side grid elements, as already described with regard to the division of the structure bodies into substructure bodies has been. In particular, sub-grid elements for substructure bodies, which have resulted from the division of structural bodies, are then also available. Specifically, this cutting mark can be provided for the particular central division of the side rail element, wherein expediently the side element adjacent to both sides of a cutting mark the lower side element stabilizing webs. Even if, therefore, the grid of the side rail element would not favor a cut at this point, such stabilizing webs ensure that nevertheless a division into bottom grid elements is possible without difficulty.

In a further advantageous embodiment of the present invention can be provided that at least two homogeneously distributed support elements having structural body are arranged offset from each other. As has already been described above, with a homogeneous distribution of the carrying elements, an offset arrangement of the vertically successive structural bodies can be provided, which can be realized particularly advantageously if the structural bodies can be subdivided into substructure bodies, so that then in each case by half staggered layers of structural bodies can be realized. In this way, the stability of the overall trigole system is further increased, which is as true for vertical stability as it is for horizontal stability.

Fig. 1

eine perspektivische Ansicht des Strukturkörpers aus einer ersten Blickrichtung,

Fig. 2

eine perspektivische Ansicht des Strukturkörper aus einer zweiten Blickrichtung,

Fig. 3

eine Aufsicht auf den Strukturkörper,

Fig. 4

eine Querschnittsansicht des erfindungsgemäßen Strukturkörpers,

Fig. 5

eine teilweise aufgeschnittene Ansicht des erfindungsgemäßen Strukturkörpers,

Fig. 6

mehrere gestapelte erfindungsgemäße Strukturkörper in einer per-spektivischen Ansicht,

Fig. 7

ein erfindungsgemäßes Rigolensystem,

Fig. 8

ein Seitengitter des Rigolensystems in einer Aufsicht,

Fig. 9

eine teilweise aufgeschnittene perspektivische Ansicht des Seitengitterelements der Fig. 8,

Fig. 10

eine Skizze zur horizontalen Verbindung benachbarter Strukturkör-per,

Fig. 11

eine Schnittansicht zur vertikalen Verbindung gegenseitig aufeinander gestapelter Strukturkörper,

Fig. 12

eine perspektivische Ansicht eines erfindungsgemäßen Strukturkör-pers in einer zweiten Ausführungsform, und

Fig. 13

zum Transport und in einem Rigolensystem gestapelte erfindungs-gemäße Strukturkörper nach Fig. 12.

Further advantages and details of the present invention will become apparent from the embodiments described below and with reference to the drawing. Showing:

Fig. 1

a perspective view of the structural body from a first viewing direction,

Fig. 2

a perspective view of the structural body from a second viewing direction,

Fig. 3

a view of the structural body,

Fig. 4

a cross-sectional view of the structural body according to the invention,

Fig. 5

a partially cutaway view of the structural body according to the invention,

Fig. 6

several stacked structural bodies according to the invention in a per-perspective view,

Fig. 7

an inventive rigging system,

Fig. 8

a side rail of the Rigolensystems in a supervision,

Fig. 9

a partially cutaway perspective view of the side grid element of Fig. 8 .

Fig. 10

a sketch for the horizontal connection of adjacent structural bodies,

Fig. 11

a sectional view for the vertical connection of mutually stacked structural body,

Fig. 12

a perspective view of a Strukturkör pers invention in a second embodiment, and

Fig. 13

for transport and in a rig system stacked according to the invention according to structural body Fig. 12 ,

Fig. 1 shows a perspective view of a structural body 1 according to the invention for use in a trench system. The structural body 1, which has a square basic shape, comprises a square base grid 3 surrounded by frame-like stabilizing side walls 2, from which 36 support elements 4 with an octagonal cross-section project, which taper in the shape of a truncated pyramid towards the top. The support elements 4 are hollow, see. also Fig. 2 and Fig. 5 , and homogeneous matrix-like in six rows of six support elements 4 distributed. The entire structural body 1 is an injection molded plastic element.

How cheapest Fig. 5 it can be seen, the base grid 3 has lattice webs 5, on which the columnar support elements 4 are connected via rib-like extensions 6 at the points at which an outer wall of the octagonal support elements 4 extends parallel to a lattice web 5.

In use, two structural bodies 1 can be connected in opposite directions to define a receiving volume of a trench system. For this purpose, the structural body 1 comprises connecting devices both on the support elements 4 as well as the base grid 3, which in the present case are designed as engagement cams 7, 8 and corresponding engagement receptacles 9, 10. As can be seen, the upper surfaces of the support members 4 partially three engagement shots 9 and an engagement cam 7, partially only four engagement shots 9. Also shows Fig. 3 Best that the not occupied by the support elements 4 areas of the base grid 3 apart from the central rows 11, 12, successive rows of engagement cam 8 and engagement receptacles 10, wherein always two engagement receptacles 10 are located between two engagement cam 8.

This particular arrangement of the engagement cam 7, 8 and the engagement shots 9, 10 is due to two axis symmetries, namely on the one hand, an axis symmetry about the vertical center axis 13 (at the intersection of rows 11, 12). This axis symmetry makes it possible to put two structural body 1 on each other even if one of the structural body 1 was rotated by 90 °. So there is a rotational symmetry in a rotation of one of the two oppositely stacked structural body 1 by 90 °.

However, a symmetry is also given with respect to the symmetry axes 14, which respectively form the center of a quarter of the structural body 1. These symmetries are also best Fig. 3 seen.

This latter symmetry is due to the fact that it should be possible to cut the structural body 1 by cutting in respect to the arrangement of the support members and the engagement cam substructure body, for which along the central rows 11, 12 cutting marks 15 are provided, here as two Parallel elevations or grooves are formed and can also serve as a cutting aid. If the structural body 1 is divided along these nominal cutting lines, two halves or four quarters are formed, which can be easily stacked in opposite directions in the vertical direction due to the described symmetries. In this way, half or quarter structural bodies can be produced, which enable a staggered arrangement of the structural bodies 1 in different positions and thus a higher stability.

As continues from the Fig. 1-5 can be seen, hooks 16 are formed on two sides of the structural body 1, on the other two sides of the structural body 1 with the hook corresponding hook receptacles 17. By hooking the hook 16 in the hook receivers 17 horizontally adjacent structural body 1 can be connected.

It should be noted at this point that both the engagement cam 7, 8 are positively inserted into the engagement receptacles 9, 10 as well as the hooks 16 positively in the hook receivers 17. It can also be a positive connection, for example by a clamp, or it locking lugs or the like may be provided which engage in corresponding locking recesses in the hook receptacles 17 in order to achieve a firm, stable hold.

As already mentioned, the structural body 1 can be stacked in opposite directions in use in a rig system, wherein two connected via the engagement cam 7 and the engagement shots 9 structural body form a percolation unit, but on the other of the engagement cam 8 and the engagement shots 10 more structural body are placed can. For transport and storage, however, the structural body 1, as by Fig. 6 shown in the same direction are nested, with the inside yes hollow support elements 4 in such a way in the support elements 4 of the overlying Intervene structural body 1, that ultimately the basic grid 3 come to rest completely on each other and maximum space gain during transport and storage is achieved.

Fig. 7 shows by way of example a section of a rigging system 18 according to the invention. As can be seen, a multiplicity of structural bodies 1 are stacked in opposite directions on one another in order to form a trench volume. On the outside, the trench volume can be closed by means of side lattice elements 19, which with respect to the Fig. 8 and 9 be explained in more detail.

As can be seen, the side rail element 19 has a central, higher grid 20, which is surrounded by a lower frame 21. The frame 21 in this case has latching lugs 22, which in corresponding openings 23 (see. Fig. 1 . 3 and 5 ) engage and lock there when the side rail element 19 is to be attached to the structural bodies 1. In this case, the frame 21 is located on the base grid 3 of the structural body 1, wherein locking lugs 22 engage in the openings 23 and latch there via corresponding projections. The higher grid 20 engages a little way into the area that is set back due to the support elements 4.

How best Fig. 8 As can be seen, the grid 20 further includes cutting marks 24 to cut openings in the grid 20, which are suitable for an inflow or outflow. Further, cutting marks 25 are provided centrally to cut the side rail element 19 in two equal-sized halves 26, as well as in Fig. 7 be used. In order to ensure the stability of the grid 20 even when the side grid element 19 is cut, the grid 20 comprises additional bars 27 on both sides of the desired cutting line.

As Fig. 7 shows the divisibility of the structural body 1 and the side rail elements 19 allows a very flexible construction of the entire trench system, which provides for increased stability, after the structural body 1, as in the open part of Fig. 7 can be seen offset from each other can be arranged. However, flush termination is always possible after the structural bodies 1 are indeed divisible or quarterable, as already described above.

Fig. 10 shows the connection horizontally adjacent structural body 1. As can be seen, engage the hooks 16 one side of a structural body 1 in the openings 17 of another side of another structural body 1 a.

Fig. 11 shows now, in detail, the basic grid-side connection of two oppositely arranged structural body 1. Here, as already described, the basic grid-side engaging cam 8 each in basic grid-side engaging receptacles 10 a form-fitting. Optionally, latching elements not shown here in detail may also be provided for latching. Fig. 11 also shows in more detail how the support elements 4 are connected by ribs 6 with the webs 5 of the base grid 3.

Fig. 12 shows a structural body 1 'according to the invention in a second embodiment, which differs from the structural body 1 substantially in the form and arrangement of the now realized as truncated cones supporting elements 4. The support elements 4 are obviously arranged at the edge in a denser packing than in the interior of the structural body 1 '. In this case, the support elements 4 closely standing form a clear boundary of the structural body 1 'on the sides. The arranged in the middle support elements 4 can be provided homogeneously in less dense packing.

Finally shows Fig. 13 how the structural body 1 'in the same direction can be stacked to save space to transport. On the right-hand side, the structural bodies 1 'stacked in opposite directions, for example to form a receiving volume in a trench system, are shown.

It should be noted at this point that the present invention can be realized with other numbers of support elements, for example by means of a five rows à five support elements having structural body, in which in particular a separation using provided cutting marks, in which then unequal size substructure bodies are obtained ,

Claims (10)

1. A structural body (1, 1') for an attenuation and infiltration system (18), having an open, three-dimensional structure, wherein a base grid (3) is provided from which a plurality of hollow, upwardly tapering support elements (4) rise in such a way that multiple structural bodies (1, 1') can be nested by introducing the support elements (4) of a lower structural body (1, 1') into the bottom of support elements (4) of the upper structural body (1, 1'), the lateral limit of the structural body (1, 1') being formed by at least part of the vertical support elements (4) and by side walls (2) stabilising the base grid (3) in a frame-like manner, characterised in that on an upper surface of at least one support element (4) at least one engagement lobe (7) and at least one engagement seat (9) are provided, the engagement lobe (7) being designed for positive engagement in an engagement seat (9) of an adjacent structural body (1, 1') of an attenuation and infiltration system (18).
2. The structural body according to claim 1, characterised in that the support elements (4) are designed such that multiple structural bodies (1, 1') can be nested in the same direction with immediately consecutive base grids (3).
3. The structural body according to claim 1 or 2, characterised in that the structural body (1, 1') is designed symmetrically such that it can be divided into two or four similar substructure bodies in terms of the distribution of the support elements (4) when cut vertically through the middle.
4. The structural body according to one of the preceding claims, characterised in that at least one connection means is provided for connecting adjacent structural bodies (1, 1') in an attenuation and infiltration system (18).
5. The structural body according to claim 4, characterised in that on the outwardly facing side of the base grid (3) in regions not occupied by support elements (4) at least one engagement lobe (8) and at least one engagement seat (10) are provided, the engagement lobe (8) being designed for positive engagement in an engagement seat (10) of an adjacent structural body (1, 1') of an attenuation and infiltration system (18).
6. The structural body according to claim 5, characterised in that the engagement lobes (7, 8) and the engagement seats (9, 10) are arranged axially symmetrically to a vertical central axis (13) of the structural body (1, 1').
7. The structural body according to claim 6, characterised in that the engagement lobes (7, 8) and the engagement seats (9, 10) are furthermore arranged axially symmetrically in relation to a central axis (14) of a quarter of the structural body (1, 1').
8. An attenuation and infiltration system (18), comprising at least two structural bodies (1, 1') according to one of the preceding claims which can be arranged adjacently or are arranged adjacently.
9. The attenuation and infiltration system according to claim 8, characterised in that furthermore at least one side grid element (19) is provided, which in particular spans at least two structural bodies (1, 1') arranged vertically one on top of the other as an attenuation and infiltration unit, and which is mounted or is to be mounted on an outer edge of the attenuation and infiltration system (18).
10. The attenuation and infiltration system according to claim 9, characterised in that a connection means is provided for mounting the side grid element (19) on at least one base grid (3) of a structural body (1, 1'), in particular latching lugs (22) provided on the side grid element (19) and/or the structural body (1, 1'), which latch into apertures (23) of the structural body (1, 1') and/or of the side grid element (19).

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