Sidewalk rainwater storage and diversion structure

Abstract

The utility model relates to the technical field of municipal road construction, in particular to a sidewalk rainwater storage and flow guide structure which comprises a water permeable brick pavement layer, a water permeable geotextile layer, a water permeable concrete layer, a graded broken stone layer, a waterproof layer and a sidewalk roadbed which are sequentially arranged from top to bottom. A plurality of permeation water pipes are embedded in the graded broken stone layer, the permeation water pipes are distributed at intervals in the length direction of the sidewalk, and one end of each permeation water pipe is communicated with the water collecting well; water-permeable holes are uniformly formed in the pipe wall of the water-permeable pipe, and the outer surface of the water-permeable pipe is wrapped with water-permeable geotextile. According to the technical scheme, through the combination of the multi-layer permeable structure and the permeable water pipe, rapid permeation, storage and directional flow guide of rainwater are achieved, surface accumulated water is reduced, double filtration of the permeable geotextile and the filter cartridge is achieved, silt is prevented from blocking the permeable water pipe, and through the pore design of the graded broken stone layer and the permeable concrete layer, the pressure resistance is enhanced, and the service life is prolonged; urban heat island effect is relieved through rainwater resources, and meanwhile the manufacturing cost of a traditional drainage system is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to municipal road construction technical field, concretely relates to sidewalk rainwater storage and flow guide structure. BACKGROUND

[0002] Sponge city is a new generation of urban rainwater management concept, which refers to the good "elasticity" of the city in adapting to environmental changes and coping with natural disasters caused by rainwater, also known as "water elastic city". The international general term is "low impact development rainwater system construction", which absorbs, stores, permeates and purifies water when it rains, and releases and utilizes the stored water when needed.

[0003] The patent document with patent announcement No. CN112095398A discloses a rainwater collecting sidewalk, which comprises a road, a drainage channel is arranged on both sides of the road along the length direction of the road, the road is divided into two road bodies symmetrically with the center line along the length direction of the road as the boundary, the road body is sequentially provided with a water permeable layer, a cushion layer, a concrete layer and a base layer from top to bottom, the water permeable layer is arranged and laid by a plurality of main water permeable bricks and auxiliary water permeable bricks, and there is a gap between adjacent main water permeable bricks.

[0004] The above-mentioned scheme mainly aims at the arrangement and placement of the water permeable bricks, and does not involve the constituting structure of the sidewalk, and the rainwater collection ultimately sinks and penetrates into the soil under the sidewalk through the water permeable bricks, so it is necessary to design a complete and effective structure for collecting, guiding, storing and releasing rainwater. UTILITY MODEL CONTENT

[0005] The utility model aims to solve one of the technical problems in the related art at least to some extent. To this end, the purpose of the utility model is to provide a sidewalk rainwater storage and flow guide structure to improve the efficiency of collecting and storing rainwater by the sidewalk.

[0006] The purpose of the utility model can be realized by the following technical scheme: a sidewalk rainwater storage and flow guide structure, which comprises, from top to bottom, a water permeable brick paving layer, a water permeable geotextile layer, a water permeable concrete layer, a graded crushed stone layer, a waterproof layer and a sidewalk roadbed; a plurality of permeable water pipes are embedded in the graded crushed stone layer, the permeable water pipes are distributed at intervals along the length direction of the sidewalk, and one end of the permeable water pipes is in communication with a water collecting well; water permeable holes are uniformly formed in the pipe wall of the permeable water pipes, and the outer surface of the permeable water pipes is wrapped with water permeable geotextile.

[0007] In some embodiments of the utility model, the water permeable brick paving layer is composed of main water permeable bricks and auxiliary water permeable bricks which are alternately spliced, and a water guide gap is reserved between adjacent main water permeable bricks.

[0008] In some embodiments of the utility model, the specification of the water permeable geotextile layer is 400g / m2, and the edge thereof extends downward to the side wall of the graded crushed stone layer to form a side seepage prevention structure.

[0009] In some embodiments of the utility model, the water permeable concrete layer adopts C30 concrete, the thickness of water permeable concrete layer is 15cm, the porosity of water permeable concrete layer is 15-25%, and the inside is uniformly distributed with connected porosity.

[0010] In some embodiments of the utility model, the graded broken stone layer adopts 15-20cm continuous graded broken stone.

[0011] In some embodiments of the utility model, the waterproof layer is composed of two layers of non-woven fabric and a layer of geomembrane by hot pressing or film coating process, and the specification is 900g / m2, and the waterproof layer is tightly combined with the bottom surface of the graded broken stone layer.

[0012] In some embodiments of the utility model, the permeable water pipe is composed of a filter cartridge, a sealing element and a water outlet element arranged at both ends of the filter cartridge, and the sealing element and the water outlet element are tightly wrapped on the surface of the filter cartridge.

[0013] In some embodiments of the utility model, the water outlet element includes a water outlet, one end of the water outlet is communicated with the water collecting well, the other end of the water outlet is connected with a conical cover, one end of the conical cover with smaller size is connected with the water outlet, the other end of the conical cover with larger size is matched with the inner diameter of the filter cartridge, and a slope surface is formed on the inner wall of the conical cover between the two ends; the outer part of the conical cover is further sleeved with an outer cover, the surface of the outer cover and the water outlet are connected as an integral structure, and a clamping cavity is further formed between the outer cover and the conical cover, which is used for embedding the end part of the filter cartridge.

[0014] In some embodiments of the utility model, the axis of the permeable water pipe is inclined to the horizontal plane at an angle of 1-3°, and the end close to the water collecting well is lower than the other end.

[0015] In some embodiments of the utility model, the top of the water collecting well is provided with a detachable grating cover plate, and the bottom is communicated with the municipal rainwater pipe network through a drain pipe.

[0016] The utility model has the advantages of:

[0017] Compared with the traditional method, the technical scheme combines the multi-layer water permeable structure with the permeable water pipe, realizes the rapid penetration, storage and directional flow of rainwater, reduces the surface water, and realizes the double filtration of the water permeable geotextile and the filter cartridge, prevents the permeable water pipe from being blocked by silt, designs the porosity of the graded broken stone layer and the water permeable concrete layer, enhances the compression resistance, prolongs the service life, finally realizes the use of rainwater resources to alleviate the urban heat island effect, and saves the cost of traditional drainage system. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model makes further illustration to the utility model below combining with the drawings.

[0019] Figure 1 Is the sectional view of the utility model;

[0020] Figure 2 Is the three-dimensional view of the permeable water pipe in the utility model;

[0021] Figure 3 Is the three-dimensional view of the permeable water pipe in the utility model after hiding the permeable geotextile;

[0022] Figure 4 Is the three-dimensional view of the water outlet in the utility model;

[0023] Figure 5 Is the sectional view of the water outlet in the utility model.

[0024] In the drawing: 1, the permeable brick paving layer; 2, the permeable geotextile layer; 3, the permeable concrete layer; 4, the graded broken stone layer; 5, the waterproof layer; 6, the pedestrian road bed; 7, the permeable water pipe; 71, the sealing element; 72, the water outlet; 721, the water outlet; 722, the conical cover; 723, the outer cover; 724, the clamping cavity; 73, the filter cartridge; 74, the permeable geotextile; 8, the water collecting well. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] As Figure 1 Shown, the pedestrian rainwater storage and flow guide structure, including the permeable brick paving layer 1, the permeable geotextile layer 2, the permeable concrete layer 3, the graded broken stone layer 4, the waterproof layer 5 and the pedestrian road bed 6 that are sequentially arranged from top to bottom;The graded broken stone layer 4 is buried with multiple permeable water pipes 7, and the permeable water pipe 7 is distributed along the length direction of the pedestrian, and one end of the permeable water pipe 7 is communicated with the water collecting well 8;The pipe wall of the permeable water pipe 7 is uniformly provided with the water-permeable hole, and the outer surface is wrapped with the permeable geotextile 74.

[0027] Rainwater first enters the water-permeable geotextile layer 2 through the pores or water guide gaps of the water-permeable brick paving layer 1, and then flows into the connected pores of the water-permeable concrete layer 3 after being filtered by the water-permeable geotextile layer 2. The rainwater continues to infiltrate into the graded gravel layer 4, is temporarily stored and slowly flows through the gaps between the gravels, and is collected by the infiltration water pipes 7 in the graded gravel layer 4. After being filtered twice by the water-permeable holes and the water-permeable geotextile 74, the water is guided into the water collecting well 8, and then is discharged into the municipal pipe network through the drain pipe.

[0028] The multi-layer water-permeable structure and the infiltration water pipes 7 are combined to realize rapid infiltration, storage and directional flow of rainwater, reduce surface water accumulation, prevent the infiltration water pipes 7 from being blocked by silt through the double filtration of the water-permeable geotextile 74 and the filter cylinder 73, and enhance the compression resistance and prolong the service life through the pore design of the graded gravel layer 4 and the water-permeable concrete layer 3. Finally, the rainwater resources are utilized to relieve the urban heat island effect, and the cost of the traditional drainage system is saved.

[0029] In some embodiments of the utility model, the water-permeable brick paving layer 1 is composed of main water-permeable bricks and auxiliary water-permeable bricks which are alternately spliced, and water guide gaps are reserved between adjacent main water-permeable bricks, the water guide gaps are between 3-5mm, and a rapid water guide channel is formed. The rapid water guide channel not only increases the initial infiltration efficiency of rainwater and avoids the blockage of brick joints, but also reduces the silt entering the lower structure in combination with the filtering function of the water-permeable geotextile layer 2.

[0030] In some embodiments of the utility model, the specification of the water-permeable geotextile layer 2 is 400g / m2, and the edges thereof extend downward to the side walls of the above-mentioned graded gravel layer 4 to form a side seepage prevention structure. The high-density geotextile intercepts small particles, protects the pores of the water-permeable concrete layer 3 from being blocked, and forms a sealed barrier through the side wall extension design to prevent rainwater from seeping out from the edges of the structure.

[0031] In some embodiments of the utility model, the water-permeable concrete layer 3 adopts C30 concrete, the thickness of the water-permeable concrete layer 3 is 15cm, the porosity of the water-permeable concrete layer 3 is 15-25%, and the connected pores are uniformly distributed in the water-permeable concrete layer 3 to store and slowly release rainwater.

[0032] It should be noted that the high porosity ensures the water storage capacity and relieves the pressure of short-term heavy rain; and the C30 strength grade ensures the load bearing capacity of the structure and is suitable for pedestrian load. The water-permeable concrete layer 3 and the graded gravel layer 4 jointly form a "sponge body" to realize the layered storage and slow release of rainwater.

[0033] In some embodiments of the utility model, the graded gravel layer 4 adopts continuously graded gravels with a particle size of 15-20cm to improve the compactness of the structure and prevent the collapse of the gravel layer; and the large porosity can also enhance the rainwater temporary storage capacity.

[0034] As an example, 18cm graded gravel is preferably used, with the gravel gaps forming water storage spaces.

[0035] It should be noted that the graded gravel layer 4 cooperates with the permeable water pipe 7 to guide rainwater to the permeable water pipe 7 by gravity, avoiding water accumulation.

[0036] In some embodiments of the present application, the waterproof layer 5 is composed of two layers of non-woven fabric and one layer of geomembrane, which is compounded by hot pressing or film coating process, and the specification is 900g / m2. The waterproof layer 5 is tightly attached to the bottom surface of the graded gravel layer 4. The geomembrane can block the downward infiltration of rainwater and protect the stability of the pedestrian road bed 6, while the non-woven fabric buffer layer can disperse stress and prevent puncture damage. The waterproof layer 5 and the water-permeable geotextile layer 2 form double protection from top to bottom, ensuring that rainwater is only discharged through the permeable water pipe 7.

[0037] As shown in Figure 2 , Figure 3 In some embodiments of the present application, the permeable water pipe 7 is composed of a filter cylinder 73, a sealing element 71 and a water outlet element 72 arranged at both ends of the filter cylinder 73. The sealing element 71 and the water outlet element 72 tightly wrap the water-permeable geotextile 74 on the surface of the filter cylinder 73, and the water-permeable geotextile 74 can be easily replaced after a certain period of time. After the rainwater is filtered by the water-permeable geotextile 74, it enters the inside of the filter cylinder 73 through the water-permeable holes on the surface of the filter cylinder 73, and then enters the water collecting well 8 from the water outlet element 72.

[0038] As shown in Figure 4 , Figure 5 In some embodiments of the present application, the water outlet element 72 includes a water outlet 721, one end of which is in communication with the water collecting well 8, and the other end of which is connected with a conical cover 722. The smaller end of the conical cover 722 is connected with the water outlet 721, and the larger end of the conical cover 722 matches the inner diameter of the filter cylinder 73, which is conducive to guiding the water flow into the water outlet 721. The inner wall of the conical cover 722 corresponds to the formation of a slope surface between its two ends, which guides the water flow and prevents backflow from blocking.

[0039] The outer part of the conical cover 722 is further sleeved with an outer cover 723, which is integrally connected with the surface of the water outlet 721. A clamping cavity 724 is further formed between the outer cover 723 and the conical cover 722, which is used for embedding the end of the filter cylinder 73. When the end of the filter cylinder 73 is embedded, the water-permeable geotextile 74 is also embedded and fixed at the same time, which is consistent with the way the sealing element 71 tightly presses the water-permeable geotextile 74.

[0040] As an example, the filter cylinder 73 is filled with activated carbon and quartz sand (mixed ratio 1:2) to adsorb pollutants and intercept particles.

[0041] In some embodiments of the utility model, the axis of the permeable water pipe 7 is inclined to the horizontal plane by an angle of 1-3°, and the end of the permeable water pipe 7 close to the water collecting well 8 is lower than the other end, the design of the inclined angle of the permeable water pipe 7 makes the water flow naturally to the direction of the water collecting well 8, and the filter cartridge 73 improves the flow guiding efficiency.

[0042] In some embodiments of the utility model, the top of the water collecting well 8 is provided with a detachable grid cover plate, the grid cover plate is convenient for cleaning the sundries in the well, and the maintenance is convenient, the bottom of the water collecting well 8 is communicated with the municipal rainwater pipe network through a drain pipe, and a complete "collection-filtering-discharge" closed loop system is formed.

[0043] The scheme realizes efficient collection, storage and discharge of rainwater through the multi-layer water-permeable structure, the directional flow guiding assembly and the fine parameter design, has environmental protection, economy and durability, forms a complete "sponge sidewalk" solution scheme, is suitable for urban roads, squares and other scenes, and helps the construction of the sponge city.

[0044] In the description of the specification, the description of the reference terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way.

[0045] The above content is only an example and description of the utility model, and those skilled in the art of the technical field to which the utility model belongs can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as the modifications or supplements or replacements do not deviate from the utility model or exceed the scope defined by the claims, and should belong to the protection scope of the utility model.

Claims

1. A sidewalk rainwater storage and diversion structure, characterized in that, The pavement layer is composed of a plurality of water permeable bricks, a plurality of water permeable geotextiles, a plurality of water permeable concrete layers, a plurality of graded gravel layers and a plurality of waterproof layers.

2. The sidewalk rainwater storage and diversion structure according to claim 1, wherein, The water permeable brick pavement layer is composed of main water permeable bricks and auxiliary water permeable bricks.

3. The sidewalk rainwater storage and diversion structure according to claim 1, wherein, The water permeable geotextile layer has a specification of 400 g / m2, and the edges thereof extend downward to the side walls of the graded gravel layer to form a side seepage prevention structure.

4. The sidewalk rainwater storage and diversion structure according to claim 1, wherein, The water permeable concrete layer is made of C30 concrete, and has a thickness of 15 cm, a porosity of 15-25%, and a plurality of interconnected pores.

5. The moving walkway rainwater storage and diversion structure according to claim 1, wherein, The graded gravel layer is made of continuous graded gravel with a particle size of 15-20 cm.

6. The moving walkway rainwater storage and diversion structure according to claim 1, wherein, The waterproof layer is composed of two layers of non-woven fabrics and one layer of geomembrane, and is formed by hot pressing or film coating process.

7. The moving walkway rainwater storage and diversion structure according to claim 1, wherein, The water permeation pipe is composed of a filter cartridge, a sealing member and a water outlet member arranged at two ends of the filter cartridge.

8. The moving sidewalk rainwater storage and diversion structure of claim 7, wherein, The water outlet member includes a water outlet, one end of which is in communication with the water collecting well, and the other end of which is connected with a conical cover. The conical cover has one end connected with the water outlet and the other end matched with the inner diameter of the filter cartridge.

9. The moving walkway rainwater storage and diversion structure according to claim 1, wherein, The outer surface of the conical cover is covered with an outer cover.

10. The moving walkway rainwater storage and diversion structure according to claim 1, wherein, The axis of the water permeation pipe is inclined to the horizontal plane by an angle of 1-3°, and the end close to the water collecting well is lower than the other end. The top of the water collecting well is provided with a detachable grid cover, and the bottom thereof is in communication with the municipal rainwater pipe network through a drain pipe.

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