Prefabricated water collection sponge riverway footpath plate

Abstract

The utility model discloses a prefabricated water collection sponge riverway footpath plate, which belongs to the field of sponge cities and comprises a prefabricated plate and a sponge water collection system. The interior of the prefabricated slab is divided into an upper layer, a middle layer and a lower layer, and the reinforcing meshes are located on the upper layer and the lower layer; the upper surface of the prefabricated plate is a rollover modeling surface layer; according to the sponge water collecting system, water collecting holes are evenly distributed in an upper rollover modeling surface layer of a prefabricated plate; the water collecting hole is matched with the water collecting cavity; the water collecting cavity is communicated with the water collecting holes in the upper layer and penetrates through the whole footpath plate, and a water conveying pipe is arranged in the direction perpendicular to the water collecting cavity and connected with the water collecting cavity; the prefabricated catchment riverway footpath plate can collect rainwater, store part of the rainwater and drain the rainwater to supplement the river, so that the rainwater absorption, storage seepage and slow release effects of a city are enhanced, the rainwater runoff is effectively controlled, and the urban development mode of natural accumulation, natural seepage and natural purification is realized.

Description

Technical Field

[0001] This application belongs to the field of sponge cities, and specifically relates to a prefabricated water-collecting sponge river channel footpath slab. Background Art

[0002] A sponge city is a city that can absorb water like a sponge. Such a city can retain rainwater to the greatest extent. Specifically, several plots are arranged in urban communities and constructed with water-absorbing materials as sponge bodies. Usually, they are leisure parks for citizens, and during heavy rains, they serve as places for storing water. Whether it is muddy land, grassland, forest, or lake, they can all absorb a large amount of rainwater.

[0003] In 2014, the Ministry of Housing and Urban-Rural Development organized the compilation of the "Technical Guide for Sponge City Construction". In 2015, the General Office of the State Council issued the "Guiding Opinions on Promoting the Construction of Sponge Cities", clearly stating that "a sponge city is a way of urban development that, through strengthening urban planning, construction, and management, gives full play to the ecological systems of buildings, roads, green spaces, water systems, etc. to absorb, store, and slow-release rainwater, effectively control rainwater runoff, and achieve natural accumulation, natural infiltration, and natural purification."

[0004] After retrieval, the patent with the publication number CN108179677A provides a permeable footpath for a sponge city, including precast concrete blocks, vertical support ribs in the block, permeable brick support ribs, vertical support ribs on the side of the block, a bottom plate, a water flow cavity, water flow holes, permeable bricks, a water collection channel, a water guiding slope, and ventilation holes. The upper layer of the permeable footpath is composed of the top of the vertical support ribs in the block of the precast concrete block and the permeable bricks, the lower layer is the bottom plate of the precast concrete block, and the middle layer is the permeable brick support ribs and the water flow cavity. A water collection channel is arranged along the side close to the road surface.

[0005] However, it is still necessary to additionally set up a water collection channel, and the footpath itself does not have the function of storing water.

[0006] Most northern cities are short of water and have little rainfall. Traditional river channel footpaths do not have functions such as water collection and water storage, or only have the function of water collection but cannot store water, and cannot well realize the functions of a sponge city. Summary of the Invention

[0007] The technical problem to be solved by this application is: to provide a prefabricated water-collecting sponge river channel footpath slab to solve the problems mentioned in the background art or achieve better technical effects.

[0008] In order to solve the above technical problems, the applicant has obtained the technical solution of this application through practice and summary. This application discloses a precast water-collecting river channel footpath slab, including: precast slab members, a sponge water-collecting system; lap joints are provided at both ends of the precast slab members. The interior of the precast slab members is divided into upper, middle and lower layers, and steel mesh sheets are located in the upper and lower layers; the upper surface of the precast slab members is a reverse-molded surface layer; the secondary paving process is reduced, the on-site construction dust is reduced, the lap joints are matched, the construction time is reduced, and the construction is more convenient.

[0009] The sponge water-collecting system includes: water-collecting holes are evenly distributed on the upper-layer reverse-molded surface layer of the precast slab members; the water-collecting holes are matched with a water-collecting cavity; the water-collecting cavity communicates with the water-collecting holes in the upper layer and runs through the entire footpath slab. A water delivery pipe is provided in a direction perpendicular to the water-collecting cavity to connect the water-collecting cavity; rainwater is collected through the water-collecting holes and stored in the water-collecting cavity, and then discharged into the river through the drain holes of the water delivery pipe, enhancing the city's absorption and infiltration of rainwater, so as to effectively control rainwater runoff and realize the urban development method of natural accumulation, natural infiltration and natural purification.

[0010] Furthermore, a water-stop rubber groove is arranged around the lap joint; the water-stop rubber groove is matched with a water-stop rubber strip; the sealing performance when the precast footpath slabs are connected to each other is enhanced, and water seepage is prevented.

[0011] Furthermore, the water-collecting holes are arranged in five rows and seven columns; the water-collecting holes are evenly distributed to increase the contact area with rainwater and better collect rainwater.

[0012] Furthermore, the sponge water-collecting system is in a network shape and the main material is PVC; the water delivery pipe connects the water-collecting cavity and does not completely penetrate the precast slab member; the network-shaped pipeline layout enhances the rainwater collection capacity and discharge capacity, avoids the failure of the water-collecting system caused by the damage of a single pipeline, and the material is PVC material, further reducing the manufacturing cost.

[0013] Furthermore, the water delivery pipe penetrates through one side perpendicular to the lap joint surface and the upper surface, and the penetration part is a drain outlet; a drain hole is provided on one side of the precast slab member close to the river bank, which is convenient for drainage. The water delivery pipe does not completely penetrate, restricting the water flow direction.

[0014] Furthermore, the water-collecting cavity is in a V shape, and the water delivery pipe partially penetrates and connects the middle parts of each water-collecting cavity. The water delivery pipe penetrates and connects the water-collecting cavity, and the water delivery pipe does not completely penetrate the precast slab member. The water-collecting cavity and the water delivery pipe cooperate to form a structure with a lower middle and higher sides; the water automatically accumulates in the water delivery pipe and the water-collecting cavity under the action of gravity, which is conducive to the storage and discharge of water.

[0015] Furthermore, a water-stop plate and a switch plug are installed at the drain outlet; to prevent river water from flowing back during the flood season and adjust the water storage capacity of the water-collecting cavity through the switch plug.

[0016] Furthermore, the water collecting holes are provided with flared openings, and anti-blocking devices are arranged at the flared openings. The anti-blocking devices include wire meshes and closed perforated plates. The flared openings are beneficial for collecting rainwater. The wire meshes prevent sundries from entering the water collecting holes and blocking the pipelines, and the perforated plates ensure that water can still seep through when the flared openings are blocked by sediment.

[0017] Furthermore, the precast plate member is made of anti-seepage concrete to prevent rainwater from seeping in.

[0018] Furthermore, the precast plate member and the sponge water collecting system are integrated and assembled in the factory. The integrated design is convenient for mass production, reduces costs, and facilitates construction.

[0019] The present invention also discloses a production and construction method for precast water collecting sponge river channel footpath slabs, including:

[0020] Step 1: Earth excavation;

[0021] The sequence and method of earth excavation must be consistent with the design requirements and follow the principles of "supporting first when excavating the trench, excavating after supporting, excavating in layers, and strictly prohibiting over-excavation". The excavation sequence is to excavate in sections and zones according to the construction drawing of earth excavation operations. The depth of earth excavation varies from 2 to 5 meters and is excavated in 2 to 3 layers layer by layer.

[0022] Step 2: Retaining wall construction;

[0023] The river channel retaining wall is constructed according to the construction procedures.

[0024] Step 3: Production of precast water collecting sponge river channel footpath slabs;

[0025] First, perform the form turning operation for the form turning surface layer according to the requirements. After the form turning is completed, set up the formwork. The precast water collecting sponge river channel footpath slabs adopt the inverted construction method. After the formwork is set up, bind the upper steel mesh sheet. After the upper steel mesh sheet is bound, place the network-shaped PVC pipe sponge water collecting system composed of water collecting cavities, drain holes, and water pipes upside down on the upper steel mesh sheet, and place the lower steel mesh sheet on the network-shaped PVC pipe system composed of water collecting cavities, drain holes, and water pipes. After the sponge water collecting system is completely completed, pour concrete and cure it.

[0026] Step 4: Install the first footpath slab;

[0027] Use a crane to install the footpath slab on the retaining wall and use a spirit level for horizontal measurement. If the level is out of tolerance, gently lift the hook for secondary leveling. The leveling can be achieved by padding steel washers under the footpath slab.

[0028] Step 5: Install the second footpath slab;

[0029] Before installing the second walkway slab, install the water-stop rubber strip in the water-stop rubber groove of the protruding overlapping joint of the first walkway slab according to the shape of the water-stop rubber groove. Align the sunken overlapping joint of the second walkway slab with the protruding overlapping joint of the first walkway slab, and overlap them with vertical staggering. The water-stop rubber groove on the sunken overlapping joint of the second walkway slab is aligned with the protruding overlapping joint of the first walkway slab. The water-stop rubber grooves of the two slabs squeeze the water-stop rubber strip to prevent water loss during water collection.

[0030] Step Six: Repeat the operation

[0031] Compared with the prior art, the present application can achieve the following technical effects:

[0032] Water collection holes are evenly distributed on the upper layer of the formwork-shaped surface layer of the precast slab member; the water collection holes cooperate with the water collection cavity; the water collection cavity communicates with the water collection holes on the upper layer and penetrates through the entire walkway slab, and a water delivery pipe is provided in a direction perpendicular to the water collection cavity to connect the water collection cavity; rainwater is collected through the water collection holes and stored in the water collection cavity, and then discharged into the river through the drain holes of the water delivery pipe, enhancing the city's absorption and infiltration of rainwater.

[0033] The precast water collection river channel walkway slab can collect rainwater, store part of the rainwater, and also discharge rainwater to supplement the river, enhancing the city's absorption, infiltration and slow release of rainwater, effectively controlling rainwater runoff, and realizing the urban development mode of natural accumulation, natural infiltration and natural purification.

[0034] Both ends of the precast slab member are provided with overlapping joints. The interior of the precast slab member is divided into three layers: upper, middle and lower. The steel mesh is located in the upper and lower layers; the upper surface of the precast slab member is a formwork-shaped surface layer; the secondary paving process is reduced, the on-site construction dust is reduced, the overlapping joints cooperate, the construction time is reduced, and the construction is more convenient. The precast water collection river channel walkway is integrally formed, easy to install, greatly reducing the construction time. It is integrally manufactured in the factory, effectively reducing the cost. The formwork-shaped surface layer can reduce the secondary paving process and reduce the on-site construction dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 It is a front view of a precast water collection sponge river channel walkway slab;

[0037] Figure 2 It is a top view of a precast water collection sponge river channel walkway slab;

[0038] Figure 3It is a sectional view of a prefabricated water-collecting sponge river channel footpath board;

[0039] Figure 4 It is an installation sectional view of a prefabricated water-collecting sponge river channel footpath board;

[0040] Figure 5 It is a detailed water-collecting drawing of a prefabricated water-collecting sponge river channel footpath board;

[0041] Figure 6 It is a side view of a prefabricated water-collecting sponge river channel footpath board;

[0042] Figure 7 It is a structural diagram of an anti-blocking device for a prefabricated water-collecting sponge river channel footpath board;

[0043] Figure 8 It is a 3D structural diagram of a sponge water-collecting system for a prefabricated water-collecting sponge river channel footpath board.

[0044] Illustration: 1. Mould-turned surface layer; 2. Water-collecting hole; 3. Water-collecting cavity; 4. Drainage hole; 501. Upper steel mesh; 502. Lower steel mesh; 601. Convex overlapping joint; 602. Concave overlapping joint; 8. Concrete precast; 10. Water delivery pipe; 11. Rail; 14. Waterstop rubber groove; 15. Waterstop rubber strip; 16. Bell mouth; 17. Steel wire mesh; 18. Sealing and pore-sealing plate. Specific implementation mode

[0045] In order to make the purpose, technical solution and advantages of the present application clearer, the following further details the present application in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] The application principle of the present application is further described below in combination with the attached drawings and specific embodiments.

[0047] Embodiment 1

[0048] Both ends of the precast slab are provided with lapping joints. The interior of the precast slab is divided into upper, middle and lower layers, and the steel mesh is located in the upper and lower layers; the upper surface of the precast slab is a formwork-turned surface layer; a network-shaped sponge water collection system is arranged inside the precast slab, and the main material is pvc material. The sponge water collection system includes: evenly distributed water collection holes arranged on the upper formwork-turned surface layer of the precast slab; the water collection holes are connected downward and cooperated with a water collection cavity; a bell mouth is arranged at the water collection port of the water collection hole, and an anti-blocking device is installed. The water collection cavity communicates with the water collection holes in the upper layer and runs through the entire interior of the footpath slab. Both ends of the water collection cavity are raised to form an angle of 2°-3° with the horizontal plane, showing a v-shape; a water delivery pipe arranged in the middle of the water collection cavity runs through and connects the water collection cavity, and at the same time does not completely run through the precast slab. The water collection cavity is connected with the water delivery pipe in a matching manner to form a structure with a lower middle and higher sides. The water delivery pipe runs through on one side perpendicular to the lapping joint surface and the upper surface, and a water discharge hole is formed at the penetration point. A water stop plate and a switch plug are installed at the water discharge port.

[0049] The lapping joints include a concave lapping joint located in the upper layer and a convex lapping joint located in the lower layer; during installation, the concave and convex lapping joints cooperate with each other, and a water stop rubber groove is arranged around the lapping joint, and a water stop rubber strip is installed in cooperation to ensure the sealing performance during installation.

[0050] Collection

[0051] Embodiment 2

[0052] When the footpath slab is installed in a northern city, the switch plug is in the closed state initially. It rains less in the north. During rainfall, rainwater enters the water collection cavity through the bell mouth and flows into the water delivery pipe under the action of gravity. At this time, the switch plug is closed, and rainwater is stored inside the footpath. When it is dry for a long time, the switch plug is opened, and the stored rainwater flows into the river to supplement the river water volume.

[0053] Embodiment 3

[0054] When the footpath slab is installed in a southern city, the switch plug is in the open state initially. It rains a lot in the south. During rainfall, rainwater flows into the water storage cavity through the bell mouth and flows into the water delivery pipe under the action of gravity and is discharged into the river to avoid the accumulation of rainwater affecting the travel of citizens.

[0055] Embodiment 4

[0056] Production of precast water collection sponge river footpath slab:

[0057] First, perform the formwork-turning operation on the surface layer according to the river channel retaining wall. After the formwork-turning is completed, set up the formwork. The precast water-collecting sponge river channel walkway slab adopts an inverted construction method. After the formwork is set up, bind the upper steel mesh. After the upper steel mesh is bound, place the network-shaped PVC pipe sponge water-collecting system composed of water-collecting cavities, drain holes, and water pipes upside down on the upper steel mesh, and place the lower steel mesh on the network-shaped PVC pipe system composed of water-collecting cavities, drain holes, and water pipes. After the sponge water-collecting system is completely completed, pour concrete and cure it.

[0058] Example 5

[0059] A construction method for precast water-collecting river channel walkway slabs:

[0060] Step 1: Earth excavation;

[0061] The sequence and method of earth excavation must be consistent with the design requirements and follow the principles of "supporting first when excavating the trench, excavating after supporting, excavating in layers, and strictly prohibiting over-excavation"; the excavation sequence is carried out in sections and zones according to the earth excavation operation construction drawing. The depth of earth excavation ranges from 2 to 5 meters and is excavated layer by layer in 2 to 3 layers.

[0062] Step 2: Retaining wall construction;

[0063] The river channel retaining wall is constructed according to the construction process.

[0064] Step 3: Install the first walkway slab;

[0065] Use a crane to install the walkway slab on the retaining wall and use a spirit level for horizontal measurement. If the level is out of tolerance, gently lift the hook to install the second walkway slab.

[0066] Step 4: Install the second walkway slab;

[0067] Before installing the second walkway slab, install the water-stop rubber strip in the water-stop rubber groove of the protruding lapping joint of the first walkway slab according to the shape of the water-stop rubber groove. Align the sunken lapping joint of the second walkway slab with the position of the protruding lapping joint of the first walkway slab, overlap them with staggered joints up and down, and align the water-stop rubber groove on the sunken lapping joint of the second walkway slab with the protruding lapping joint of the first walkway slab. The water-stop rubber grooves of the two slabs squeeze the water-stop rubber strip to prevent water loss during water collection. Level it again. The leveling can be achieved by using steel gaskets under the walkway slab.

[0068] Step 5: Repeat Step 4 until the laying is completed.

[0069] Working principle: When it rains, rainwater falls on the surface of the footpath. The rainwater is collected by the water collecting holes and enters the water collecting cavity, where it is stored. When the water volume reaches a certain level, the water flows through the water delivery pipe and is discharged into the river through the water discharge holes. After the rain stops, there is still some rainwater stored in the water collecting cavity, which is released into the river or naturally evaporated during periods of little rain, so as to achieve the functions of absorbing, infiltrating, and slowly releasing rainwater in the city, effectively controlling rainwater runoff, and realizing the urban development mode of natural accumulation, natural infiltration, and natural purification.

[0070] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present application, the present application can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0071] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prefabricated water-collecting sponge river channel walkway slab, characterized in that: The prefabricated water-collecting sponge river channel walkway slab includes a prefabricated slab member and a sponge water-collecting system; Both ends of the prefabricated slab member are provided with lapping joints (6). The interior of the prefabricated slab member is divided into upper, middle and lower layers, and the steel wire mesh (5) is located in the upper and lower layers; the upper surface of the prefabricated slab member is a reverse-molded surface layer (1); The sponge water-collecting system includes: water-collecting holes (2) are provided on the upper-layer reverse-molded surface layer (1) of the prefabricated slab member; the water-collecting holes (2) are matched with water-collecting cavities (3); the water-collecting cavities (3) communicate with the water-collecting holes (2) in the upper layer and penetrate through the entire walkway slab.

2. The precast water-collecting sponge river channel footpath slab according to claim 1, characterized in that: The lapping joints (6) include a concave lapping joint (501) in the upper layer and a convex lapping joint (502) in the lower layer; a water-stop rubber groove (14) is arranged around the lapping joint (6) and is matched with a water-stop rubber strip (15).

3. The precast water-collecting sponge riverway footpath slab according to claim 1, characterized in that: The water-collecting holes (2) are evenly distributed.

4. The precast water-collecting sponge river channel walkway slab according to claim 1, wherein: The sponge water-collecting system is in a network shape and the main material is pvc.

5. The prefabricated water-collecting sponge river channel footpath slab according to claim 1, characterized in that: The water-collecting cavity (3) is in a V shape; it also includes a water delivery pipe (10). The water delivery pipe (10) penetrates and connects the water-collecting cavity (3). The water delivery pipe (10) does not completely penetrate the prefabricated slab member, and the water-collecting cavity and the water delivery pipe are matched to form a structure with a lower middle and higher sides.

6. The prefabricated water-collecting sponge river channel footpath slab according to claim 5, characterized in that: Both ends of the water-collecting cavity (3) are raised at an angle of 2° to 3° with the horizontal plane, and the water delivery pipe (10) is arranged in the middle of the water-collecting cavity (3).

7. A prefabricated water-collecting sponge river channel walkway slab according to claim 5, characterized in that: The water delivery pipe (10) penetrates through one side perpendicular to the surface of the lapping joint (6) and the upper surface, and the penetration point is a water discharge port (4).

8. A prefabricated water-collecting sponge river channel walkway slab according to claim 7, characterized in that: A water-stop plate and a switch plug are installed at the water discharge port (4).

9. A prefabricated water-collecting sponge river channel footpath board according to claim 1, characterized in that: The water-collecting hole is provided with a flared mouth (16), and an anti-blocking device is installed at the flared mouth (16); the larger-diameter end of the anti-blocking device is fixedly connected with a wire mesh (17), and the other end is connected with a sealed pore plate (18).

10. A prefabricated water-collecting sponge river channel walkway slab according to claim 1, characterized in that: The material of the prefabricated slab member is anti-seepage concrete (8).

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