Fabricated outdoor site structure based on sponge city construction
By designing structures such as gravel layers, permeable geotextiles and permeable blind pipes in outdoor sites, the problems of rainwater accumulation and runoff on concrete ground are solved, and the effective elimination of ground water and recycling and purification of rainwater are achieved, meeting the needs of sponge city construction.
Patent Information
- Application Number
- CN202421748342.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The concrete floors of existing outdoor sites lack rainwater storage and relief capabilities, resulting in water accumulation and runoff problems in rainy days and are not suitable for stacking needs.
A prefabricated outdoor site structure based on sponge city construction is designed, including a gravel layer, permeable geotextile, medium-coarse sand cushion layer, two-textile and one-film waterproof geotextile film, medium-coarse sand cushion layer and plain earth compaction layer. Permeable blind pipes and inspection wells are installed in the medium-coarse sand cushion layer to connect to the municipal drainage system.
Effectively eliminate water on the ground, prevent permeable blind pipe blockage, improve the aging resistance and anti-seepage performance of the site structure, meet outdoor stacking needs, and are suitable for the rainwater recycling and purification needs of sponge city construction.
Smart Images
Figure CN223033775U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sponge city construction, and specifically relates to an assembled outdoor site structure based on sponge city construction. Background Technique
[0002] In recent years, the country has attached great importance to and promoted the construction of sponge cities. At present, the existing outdoor sites are still mainly made of concrete ground. However, concrete does not have the ability to store and release rainwater, nor does it meet the construction requirements of sponge cities. Moreover, concrete is not permeable, and there are often a large amount of water accumulation and runoff on rainy days. Although a drainage system is set around the outdoor site, due to the large area of the outdoor site, the ground water accumulation cannot be effectively eliminated during rain. If the site has stacking requirements, the concrete ground will hinder the use of the outdoor stacking site. Content of the Utility Model
[0003] The purpose of the utility model is to provide an assembled outdoor site structure based on sponge city construction to solve the problems put forward in the above background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solution: An assembled outdoor site structure based on sponge city construction, including a gravel layer, a permeable geotextile, a first medium-coarse sand cushion layer, a two-layer geotextile and one-layer waterproof geomembrane, a second medium-coarse sand cushion layer and a rammed plain soil layer arranged in sequence from top to bottom. A reinforced concrete precast slab surface layer is provided on the gravel layer. A permeable blind pipe is centrally arranged in the first medium-coarse sand cushion layer. The outside of the permeable blind pipe is wrapped with a permeable geotextile, and the end of the permeable blind pipe is communicated with an inspection well. A drain pipe communicated with the municipal drainage system is provided on the inspection well, and a filter box is arranged in the inspection well. An opening is provided on one side of the filter box close to the permeable blind pipe.
[0005] The following improvements are made in the solution of this application. A plurality of filter holes are provided on the filter box. A lifting cylinder is provided at the upper end of the inner wall of the inspection well. A connecting block is provided at the lower end of the side of the filter box. The connecting block is sleeved and fixed with the piston rod of the lifting cylinder.
[0006] The following improvements are made in the solution of this application. The reinforced concrete precast slab surface layer includes a number of C30 reinforced concrete precast slabs arranged at equal intervals. The distance between adjacent C30 reinforced concrete precast slabs is 30 mm.
[0007] The following improvements are made in the solution of this application. The thickness of the gravel layer is 700 mm.
[0008] The following improvements are made in the solution of this application. The thickness of the first medium-coarse sand cushion layer is 200 mm, and the thickness of the second medium-coarse sand cushion layer is 100 mm.
[0009] In the solution of this application, the following improvements are made. The pervious blind pipe adopts a DN100 PE pipe.
[0010] Compared with the prior art, the utility model provides an assembled outdoor site structure based on sponge city construction, and has the following beneficial effects:
[0011] 1. By arranging a gravel layer, a pervious geotextile, a first layer of medium and coarse sand cushion, a two-layer-one-film waterproof geotextile membrane, a second layer of medium and coarse sand cushion and a rammed plain soil layer, the utility model effectively eliminates surface water accumulation. When there is precipitation, rainwater seeps downward under the action of gravity to the gravel layer, and is filtered for the first time under the pervious geotextile, passes through the medium and coarse sand cushion, and flows into the pervious blind pipe after being filtered twice by the pervious geotextile. After two filtrations, large-particle impurities in the rainwater are basically filtered out, effectively preventing the pervious blind pipe from being blocked. The rainwater entering the pervious blind pipe flows into the inspection well and then flows out through the drain pipe. At the same time, the two-layer-one-film waterproof geotextile membrane is used to improve the aging resistance and anti-seepage performance of the site structure.
[0012] 2. By the gravel layer and the reinforced concrete precast slab surface layer, the utility model improves the bearing capacity of the ground, meets the use requirements of the outdoor stacking site, and can be used as an important part of sponge city construction at the same time. It can recycle, purify and reuse a large amount of rainwater in the site, and is more suitable for production industrial parks with large water demand, creating a high-standard and high-requirement sponge park construction, and realizing environmental protection, energy conservation and low-impact construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a structural sectional view of the utility model;
[0014] Figure 2 is a sectional view of the inspection well.
[0015] In the figure: 1, gravel layer; 2, pervious geotextile; 3, first layer of medium and coarse sand cushion; 31, pervious blind pipe; 4, two-layer-one-film waterproof geotextile membrane; 5, second layer of medium and coarse sand cushion; 6, rammed plain soil layer; 7, reinforced concrete precast slab surface layer; 8, inspection well; 81, drain pipe; 82, filter box; 83, lifting cylinder; 84, connecting block. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The technical solutions in the embodiments of the utility model will be described below with reference to the accompanying drawings in the embodiments of the utility model:
[0017] As Figure 1-2As shown in the figure, an assembled outdoor site structure based on sponge city construction includes a gravel layer 1, a permeable geotextile 2, a first medium-coarse sand cushion layer 3, a two-layer-one-film waterproof geotextile membrane 4, a second medium-coarse sand cushion layer 5, and a compacted plain soil layer 6 arranged in sequence from top to bottom. The thickness of the gravel layer 1 is 700 mm, the thickness of the first medium-coarse sand cushion layer 3 is 200 mm, and the thickness of the second medium-coarse sand cushion layer 5 is 100 mm. A reinforced concrete precast slab surface layer 7 is provided on the gravel layer 1. The reinforced concrete precast slab surface layer 7 includes a number of C30 reinforced concrete precast slabs arranged at equal intervals, and the distance between adjacent C30 reinforced concrete precast slabs is 30 mm. A permeable blind pipe 31 is centrally arranged in the first medium-coarse sand cushion layer 3. The permeable blind pipe 31 is made of DN100 PE pipe, and the outside of the permeable blind pipe 31 is wrapped with a permeable geotextile.
[0018] During specific use, first, surface cleaning and plain soil compaction are carried out according to the site elevation design, and the compaction degree of the compacted plain soil layer 6 is increased to be greater than 93%. Then, the second medium-coarse sand cushion layer 5 with a thickness of 100 mm is laid. Next, the two-layer-one-film waterproof geotextile is laid. After completion, the first medium-coarse sand cushion layer 3 with a thickness of 200 mm is laid. Then, a layer of permeable geotextile 2 is laid. Then, a gravel layer 1 with a thickness of 700 mm is laid on the permeable geotextile 2. Then, a grader is used to level and compact the gravel layer 1. Finally, the C30 reinforced concrete precast slabs are arranged on the surface of the gravel layer 1 at intervals of 30 mm.
[0019] The end of the permeable blind pipe 31 is connected to an inspection well 8. A cylindrical filter box 82 is provided in the inspection well 8. An opening is provided on one side of the filter box 82 close to the permeable blind pipe 31, and the width of the opening is the same as the diameter of the permeable blind pipe 31. A plurality of filter holes are provided on the remaining upper and lower end faces and side faces, facilitating the rainwater in the permeable blind pipe to flow into the filter box 82. Then, the filter box 82 can further filter the rainwater entering the inspection well 8 and store the filtered debris. At the same time, a drain pipe 81 communicating with the municipal drainage system is provided on the inspection well 8, and the filtered rainwater is discharged through the drain pipe 81. An elevating cylinder 83 is provided at the upper end of the inner wall of the inspection well 8. A connecting block 84 is provided at the lower end of the side of the filter box 82, and the connecting block 84 is sleeved and fixed with the piston rod of the elevating cylinder 83. When it is necessary to clear the filtered debris, only need to start the elevating cylinder 83, and the piston rod drives the connecting block 84 and the filter box 82 to move towards the wellhead.
[0020] The above embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
Claims
1. An assembled outdoor venue structure based on sponge city construction, characterized by: The invention comprises a crushed stone layer (1), a permeable geotextile (2), a medium-coarse sand cushion layer (3), a two-cloth-one-membrane waterproof geotextile membrane (4), a medium-coarse sand cushion layer (5) and a plain soil compaction layer (6) which are arranged in sequence from top to bottom. A reinforced concrete prefabricated board surface layer (7) is arranged on the crushed stone layer (1). A permeable blind pipe (31) is arranged in the center of the medium-coarse sand cushion layer (3). The permeable blind pipe (31) is wrapped with a permeable geotextile on the outside, and the end of the permeable blind pipe (31) is connected to an inspection well (8). A drainage pipe (81) connected to a municipal drainage system is arranged on the inspection well (8), and a filter box (82) is arranged in the inspection well (8). An opening is arranged on the filter box (82) on a side close to the permeable blind pipe (31).
2. According to claim 1, a prefabricated outdoor venue structure based on sponge city construction is characterized in that: The filter box (82) is provided with a plurality of filter holes, the upper end of the inner wall of the inspection well (8) is provided with a lifting cylinder (83), the lower end of the side of the filter box (82) is provided with a connecting block (84), and the connecting block (84) is sleeved and fixed with the piston rod of the lifting cylinder (83).
3. The assembled outdoor venue structure based on sponge city construction according to claim 1 is characterized in that: The reinforced concrete precast panel surface layer (7) comprises a plurality of C30 reinforced concrete precast panels arranged at equal intervals, and the distance between adjacent C30 reinforced concrete precast panels is 30 mm.
4. The assembled outdoor venue structure based on sponge city construction according to claim 1 is characterized in that: The thickness of the crushed stone layer (1) is 700 mm.
5. The assembled outdoor venue structure based on sponge city construction according to claim 4 is characterized in that: The thickness of the medium-coarse sand cushion layer 1 (3) is 200 mm, and the thickness of the medium-coarse sand cushion layer 2 (5) is 100 mm.
6. The assembled outdoor venue structure based on sponge city construction according to claim 1 is characterized by: The permeable blind pipe (31) is a DN100 PE pipe.