Rigolenstein

Abstract

Rigolenstein (30) made of concrete with a cuboid shell body as a modular building block for buffering rainwater, with at least one first cavity opening (54) and with at least one second cavity opening (55), characterized in that - that a tubular longitudinal channel (31; 32) connects a first cavity opening (54) and a second cavity opening (55) to each other, - that the Rigolenstein (30) is formed in one piece, - that its material has a rock grain size of 8 millimeters to 16 millimeters and - that the material volume has a void content between 20% and 30% by volume.

Description

[0001] The invention relates to a concrete drainage block with a cuboid-shaped outer body as a modular building block for buffering rainwater, with at least one first cavity opening and with at least one second cavity opening.

[0002] DE 196 08 143 A1 discloses a pot-shaped precast concrete element made of a water-permeable porous lightweight concrete with a lid attached.

[0003] The present invention is based on the problem of developing a high-performance, easily installed, and technically improved trenching stone.

[0004] This problem is solved by the features of the main claim. A tubular longitudinal channel connects a first cavity opening and a second cavity opening. The drainage stone is formed in one piece. Its material has a grain size of 8 to 16 millimeters. The material volume has a void content of between 20 and 30 percent by volume.

[0005] The individual infiltration trench blocks are manufactured in a formwork using earth-moist concrete and coarse aggregate. During the manufacturing process, numerous cavities form within the material. These material-related cavities allow for the temporary storage of water within the walls of the infiltration trench block. Due to their porosity, the walls also allow water to percolate through, enabling it to seep into the surrounding soil along the entire length of the block. Furthermore, the infiltration trench block features large structural cavities that offer little to no hydraulic resistance to the flowing water. These structural cavities are formed, among other things, by the longitudinal channels. All cavities contribute to the temporary storage capacity, which gradually releases water for infiltration into the surrounding environment.

[0006] Each infiltration trench block has an integer number of longitudinal channels. The trench blocks can be manufactured in various sizes. The number of longitudinal channels, their cross-sections, and / or the external dimensions of the trench blocks can vary between the different sizes.

[0007] Each individual infiltration trench stone has a cuboid-shaped casing whose dimensions are determined by the outer dimensions of the trench stone. The trench stone itself occupies only a portion of the casing's volume, so that in a combined system of trench stones and casings, the difference in volume between the two can also be used for water storage.

[0008] A trench drainage system consists of numerous trench stones, which can be identical or have different constructions. The individual trench stones are laid in the ground, for example, one after the other. They can be laid edge to edge or centered relative to each other. It is also possible to lay several rows of trench stones side by side and / or on top of each other. The compressive strength of each individual trench stone allows for high static or dynamic load-bearing capacity, even with shallow cover in the trench drainage system.

[0009] In the infiltration trench system, each trench stone contributes to the temporary storage of water and its release into the soil. The high storage capacity of each individual trench stone and the trench system as a whole allows for a largely continuous release of water into the soil over a long period after rainfall.

[0010] Further details of the invention will become apparent from the dependent claims and the following description of schematically illustrated embodiments. Fig. 1: Rigolenstein; Fig. 2: Section of the drainage stone after Fig. 1; Fig. 3: Anchor element; Fig. 4: Trench stone with a longitudinal channel; Fig. 5: Infiltration trench system.

[0011] The Fig. 1 and Fig. Figure 2 shows a trench stone (30) in an isometric view and in a sectional view. Such trench stones (30) are used as modular building blocks for constructing trench systems (10). Trench systems (10) are used, for example, in the form of horizontal linear trenches for the temporary storage and distribution of rainwater in the ground.

[0012] The one in the Fig. 1 and Fig. The 2 depicted drainage stone (30), for example, has a length (35) of 500 millimeters. Its width (36) is 2.6 times this dimension, and its height (37) is 1.24 times the length of the drainage stone (30). Other sizes and proportions of the drainage stone (30) are also conceivable.

[0013] The trench stone (30) has a cuboid-shaped casing. The dimensions of this casing are determined by the maximum dimensions of the trench stone (30) in each direction. The volume of the casing is the product of the maximum dimensions of the trench stone (30) in each direction.

[0014] In the longitudinal direction (35), two longitudinal channels (31, 32) penetrate the infiltration trench (30). These longitudinal channels (31, 32) are identical to each other. In the transverse direction (36), both longitudinal channels (31, 32) are arranged side by side, mirroring a vertical central longitudinal plane of the infiltration trench (30). The longitudinal channels (31, 32) have a constant cross-section in the longitudinal direction (35). In the exemplary embodiment, the total volume of the longitudinal channels (31, 32) is 47% of the volume of the outer body of the infiltration trench (30). For example, the longitudinal channels (31, 32) each have a circular cross-sectional area with a diameter of 450 millimeters.

[0015] The trench stone (30) can also form a single longitudinal channel (31; 32), cf. Fig. 4, or more than two longitudinal channels (31, 32). In an embodiment with multiple longitudinal channels (31, 32), all longitudinal channels (31, 32) are arranged parallel to each other. The individual longitudinal channels (31, 32) can have different cross-sectional areas.

[0016] In the exemplary embodiment, the infiltration trench stone (30) has two first cavity openings (54) on a first end face (33). These can be water inlet openings (54). On the second end face (34), facing away from this first end face (33), there are two second cavity openings (55). Water can enter, for example, another infiltration trench stone (30) through these second cavity openings (55). The second cavity opening (55) is therefore also referred to as a water outlet opening (55) in the following. A longitudinal channel (31; 32) connects each of the first cavity openings (54) and one of the second cavity openings (55). The end faces (33; 34) have end surfaces (38, 39) oriented parallel to each other. The end surfaces (38, 39) are each designed as flat surfaces that are arranged perpendicular to the longitudinal direction (35).

[0017] In the exemplary embodiment, transverse channels (41-47) are formed in the second end face (34). Each of the transverse channels (41-47) opens into at least one longitudinal channel (31; 32). One of the transverse channels (41) connects the two longitudinal channels (31, 32) to each other. The other, for example, six transverse channels (42-47) each connect a longitudinal channel (31; 32) to a lateral surface (48) of the trench stone (30). In the exemplary embodiment, the individual transverse channels (41-47) are arranged crosswise to each other on the end face (33; 34), with each pair of adjacent transverse channels (41, 42; 42, 43; 43, 44; 44, 41; 41, 45; 45, 46; 46, 47; 47, 41) forming a right angle with each other. The transverse channels can also be arranged on the first end face (33) or on both end faces (33, 34).

[0018] The transverse channels (41-47) are channel-shaped with, for example, a semicircular cross-sectional area. The radius of each cross-sectional area is, for example, 22% of the radius of a longitudinal channel (31; 32). In the exemplary embodiment, the total volume of the transverse channels is 0.7% of the volume of the casing of the infiltration trench (30). A U- or V-shaped configuration of the transverse channels (41-47) is also conceivable. The transverse channels (41-47) can be arranged on both end faces (33, 34) of the infiltration trench (30).

[0019] Between the two longitudinal channels (31, 32), the trench stone (30) has a longitudinally oriented constriction (49). This constriction is bounded, for example, by two channels (51) with a flat channel bottom (52) and flat, V-shaped flanks (53). The volume bounded by the channels (51) and the casing is, for example, 6.3% of the volume of the casing.

[0020] In the area of ​​the constriction (49), an anchor element (60) is positively integrated into the trench stone (30). This element is located on the center of gravity line of the trench stone (30).

[0021] The Fig. Figure 3 shows an example of an anchor element (60). The anchor element (60) shown is a rod-like component with an anchor plate (62), a support plate (63), and a tension plate (64). These are spaced apart from each other and arranged on a tension rod (61). In the installed state, the anchor element (60) is anchored in the infiltration trench (30) by means of the anchor plate (62). The support plate (63) stabilizes the position of the anchor element (60) in the infiltration trench (30). The tension plate (64) protrudes from the infiltration trench (30) and serves to attach a lifting device. Other configurations of the anchor element (60) are also conceivable.

[0022] The outer surfaces (48) of the infiltration trench stone (30) are rounded. For example, they are arranged coaxially with the adjacent longitudinal channel (31; 32). In these areas, the infiltration trench stone (30) has a constant wall thickness. This wall thickness is, for example, 17% of the length of the infiltration trench stone (30).

[0023] The drainage block (30) is a single-piece concrete material. This concrete material is designed for wet, and rarely dry, environments. For example, it is subject to exposure class XC 2 according to DIN 1045 and DIN EN 206-1. It can be reinforced or unreinforced. If reinforcement is used, it can be made of structural steel, austenitic steel, stainless steel, galvanized steel, etc. During operation, the material is frequently exposed to moisture. It is subject to moisture class WF according to DIN 1045 and DIN EN 206-1. The compressive strength class is, for example, C 40 / 50 according to DIN EN 206.

[0024] The production of the trench block (30) involves, for example, 77.5% by mass of aggregate, 16% by mass of cement, 6.1% by mass of water, and additives. The aggregate used has a grain size of 8 mm to 16 mm. The trench block (30) is produced in a formwork.

[0025] After hardening, the volume of the infiltration block (30) is between 40% and 45% by volume of the volume of the infiltration block's outer body (30). After hardening, the infiltration block material (30) has a void content of, for example, 24% by volume. This void content can range between 20% and 30% by volume. Therefore, the water absorption volume of a composite consisting of the infiltration block (30) and the outer body is between 50% and 75% by volume of the volume of the cuboid outer body of the infiltration block (30). In the exemplary embodiment, the water absorption volume is 67% of the volume of the outer body of the infiltration block (30).

[0026] When used, for example, several infiltration trench stones (30) are placed one after the other in a trench or pit. Layering the infiltration trench stones (30) on top of each other is also possible. A water pipe (11), e.g., a rainwater downpipe, is connected on one side to the infiltration trench system (10) thus formed via a filter element, cf. Fig. 5. The water pipe (11) can be connected to the water inlet opening (54) of a single infiltration trench block (30) or to the water inlet openings (54) of several infiltration trench blocks (30). It is also possible to connect the water pipe (11) to one or more of the second cavity openings (55). If necessary, individual first cavity openings (54) and / or second cavity openings (55) in the infiltration trench system (10) can be closed. The single infiltration trench block (30) or several infiltration trench blocks (30) can optionally be surrounded by a filter fleece. After the infiltration trench system (10) has been laid, the trench or pit is backfilled with soil.

[0027] The individual trench stones (30) can carry or have centering elements. This allows the position of the trench stones (30) relative to each other to be additionally secured even under changing terrain loads.

[0028] When the infiltration system (10) is used, water, e.g., rainwater, flows into each individual infiltration block (30). The individual infiltration block (30) offers little or no hydraulic resistance to the inflowing water. The infiltration block (30) absorbs the water in its large cavities. Together with the cavities of the casing, the infiltration block (30) forms a buffer reservoir. It temporarily stores the inflowing water and releases it gradually to its surroundings, e.g., the soil. The release of the water to the soil is gravity-driven and, if necessary, additionally by capillary action. The water exits through the second cavity opening (55), the transverse channels (41–47), and through the walls of the infiltration block (30).

[0029] The second cavity opening (55) of a longitudinal channel (31; 32) or of each longitudinal channel (31, 32) can be closed. For this purpose, for example, a filter fleece can be used that covers the second cavity opening (55). In the illustration of the Fig. Figure 5 shows a sealing plate (71) for closing cavity openings (54, 55), which is arranged on the second end face (43) of the trench block (30). For example, the sealing plate (71) is bonded to the trench block (30) by means of a mortar joint. Other forms of bonding are also conceivable. The mortar joint can be continuous or interrupted. The sealing plate (71) can be inserted together with the trench block (30), before or after the trench block (30) is placed in the trench or pit. If the sealing plate (71) is fastened to the trench block (30), it is also conceivable to connect the sealing plate (71) to the trench block (30) by means of fastening elements, either positively and / or force-fit.

[0030] The Fig. Figure 4 shows a trench stone (30) with a single longitudinal channel (31; 32). This trench stone (30), for example, has the same length and height as the one in the Fig. 1 and Fig. 2 shown riparian stone (30). In the lateral direction (36) its width is half the width of the one in the Fig. 1 and Fig. 2 shown trench stone (30). This trench stone (30) can also have a supporting anchor (60).

[0031] The production and use of the in the Fig. The trench stone (30) shown in Figure 4 corresponds to the manufacture and use of the trench stone (30) described in connection with the first embodiment. Fig. The 4 shown trench stone (30) can be used in a trench system (10) with similar trench stones (30) or, for example, together with trench stones (30) with two or more longitudinal channels (31, 32).

[0032] The Fig. Figure 5 shows a trench system (10) with a plurality of trench stones (30). These are arranged one behind the other and one above the other. In this embodiment, each individual trench stone (30) is constructed as shown in the Fig. 1 and Fig. 2 depicted trench stones (30). It is also conceivable to arrange trench stones (30) in this trench system (10) as shown in the Fig. The structure is shown in Figure 4. The trench system (10), for example, is located in the soil, which is not shown here.

[0033] In the illustrated infiltration system (10), two longitudinal channels (31, 32) of an infiltration block (30) are closed at the outlet side by means of a closure plate (71). For example, the infiltration block (30) is joined to the closure plate (71) before the infiltration block (30) is laid.

[0034] The sealed infiltration trench stone (30) is, for example, an end infiltration trench stone of the infiltration trench system (10). It is also conceivable to seal several infiltration trench stones (30) by means of a common sealing plate (71).

[0035] On the outer surfaces of the infiltration system (10), some of the leading transverse channels (42; 43; 44; 45; 46; 47) opening into the outer surfaces (48) are closed by means of sealing plugs (72). The individual sealing plug is, for example, positively and interlockingly seated in the transverse channel (42; 43; 44; 45; 46; 47). It may, for example, be conically shaped in certain areas. It may also be additionally bonded, for example, with adhesive.

[0036] The individual sealing plug (72) consists of a natural material or a plastic that is permanently resistant to the effects of the drained water and the soil. Examples of materials that can be used include wood, cork, thermoplastic polymers, etc.

[0037] A water pipe (11) leads to the infiltration system (10). This pipe opens into a water inlet opening (54) of an infiltration block (30). The inflowing water spreads into the cavities (12) in and between the infiltration blocks (30). From there, it seeps into the surrounding soil. The sealing plates (71) and the sealing plugs (72) prevent, among other things, the ingress of backfill material into the infiltration system (10).

[0038] It is conceivable to combine the individual implementation examples with each other. Reference symbol list: 10 Infiltration system 11 Water pipe 12 cavities 30 Rigolenstein 31 Longitudinal channel 32 Longitudinal channel 33 Front 34 Front 35 Longitudinal direction 36 Latitude 37 Altitude 38 Front surface 39 Front surface 41 Cross channel between (31) and (32) 42 Cross channel 43 Cross channel 44 Cross channel 45 Cross channel 46 Cross channel 47 Cross channel 48 lateral surface area 49 Constriction 51 gutter 52 Gutter bottom 53 flanks 54 first cavity opening, water inlet opening 55 second cavity opening, water outlet opening 60 anchor elements 61 Pull rod 62 anchor plates 63 serving plates 64 train plates 71 Closure plate 72 sealing plugs QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 196 08 143 A1

[0002]

Claims

[1] Concrete drainage block (30) with a cuboid shell as a modular building block for buffering rainwater, with at least one first cavity opening (54) and with at least one second cavity opening (55), characterized by , - that a tubular longitudinal channel (31; 32) connects a first cavity opening (54) and a second cavity opening (55) to each other, - that the Rigolenstein (30) is formed in one piece, - that its material has a rock grain size of 8 millimeters to 16 millimeters and - that the material volume has a void content between 20% and 30% by volume. [2] Rigolenstein (30) according to claim 1, characterized by, that the first cavity opening (54) is arranged in a first end face (33) and the second cavity opening (55) is arranged in a second end face (34) of the trench stone (30), wherein transverse channels (41 - 47) opening into the longitudinal channel (31; 32) are arranged on at least one of the end faces (33; 34). [3] Rigolenstein (30) according to claim 2, characterized by , that each transverse channel (41 - 47) is oriented at least approximately normal to the longitudinal channel (31; 32). [4] Rigolenstein (30) according to claim 2, characterized by , that the cross-sectional area of ​​the longitudinal channel (31; 32) is at least twenty times the cross-sectional area of ​​a transverse channel (41 - 47). [5] Rigolenstein (30) according to claim 2, characterized by , that the first cavity opening (54) and the second cavity opening (55) are arranged at least partially in parallel to each other in flat end faces (38, 39) of the end faces (33, 34). [6] Rigolenstein (30) according to claim 2, characterized by , that all boundary surfaces of the trench stone (30) lying outside the end faces (33, 34) are rounded. [7] Rigolenstein (30) according to claim 1, characterized by that it has an integrated anchor element (60). [8] Rigolenstein (30) according to claim 1, characterized by that it has reinforcement made of structural steel, austenitic steel, stainless steel or galvanized steel. [9] Rigolenstein (30) according to claim 1, characterized by that it has at least two parallel tubular longitudinal channels (31, 32). [10] Rigolenstein (30) according to claim 9, characterized by , that at least one transverse channel (41) connects two longitudinal channels (31, 32) at their end faces. [11] Rigolenstein (30) according to claim 9, characterized by, that at least a second cavity opening (55) is closed by means of a closing plate (71) arranged on a second end face (34) of the trench stone (30). [12] Rigolenstein (30) according to claim 11, characterized by , that the closure plate (71) is materially bonded to the second end face (34). [13] Rigolenstein (30) according to claim 9, characterized by , that it has a constriction (49) oriented parallel to the longitudinal channels (31, 32). [14] Rigolenstein (30) according to claim 13, characterized by , that the sum of the cross-sectional area bounded by the encapsulation and the constriction (49) is at least 30% of the cross-sectional area of ​​a longitudinal channel (31, 32)). [15] Rigolenstein (30) according to claim 13, characterized by , that the anchor element (60) is arranged in the constriction (49). [16] Compound consisting of a trench stone (30) according to claim 1 and its cuboid-shaped casing body, characterized by , - that the water absorption volume of the composite is between 50% and 75% of the volume of the shell body. [17] Infiltration system (10) made of a plurality of infiltration stones (30) according to claim 1 and / or claim 9, arranged one behind the other and / or one above the other. [18] Infiltration system (10) according to claim 15, characterized by , that at least one transverse channel (42; 43; 44; 45; 46; 47) opening into the mantle surface (48) of a trench stone (30) is closed by means of a sealing plug (72).

Images