CN211199978U - Pavement paving structure for permeable sidewalk - Google Patents
Pavement paving structure for permeable sidewalk Download PDFInfo
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- CN211199978U CN211199978U CN201921924450.4U CN201921924450U CN211199978U CN 211199978 U CN211199978 U CN 211199978U CN 201921924450 U CN201921924450 U CN 201921924450U CN 211199978 U CN211199978 U CN 211199978U
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Abstract
The utility model discloses a permeable sidewalk paving structure, which sequentially comprises a roadbed, a cushion layer, a base layer, a leveling layer and a surface layer from bottom to top, wherein the cushion layer is paved by graded broken stones, the base layer is a permeable concrete layer, the leveling layer is paved by medium sand dry mixing, and the surface layer is paved by prefabricated permeable bricks; a geotextile layer is laid between the cushion layer and the base layer, and the geotextile layer is formed by overlapping permeable geotextiles; a water guide blind pipe is embedded in the cushion layer close to the geotextile layer, a water guide hole is formed in the water guide blind pipe, and a filter screen is wrapped outside the water guide blind pipe. The utility model adopts a multilayer arrangement, a geotextile layer is arranged above the cushion layer, and a water permeable blind pipe is arranged below the geotextile layer to purify and store the seepage water; through setting up the blind pipe slope that permeates water and connect municipal drainage pipe, absorb, purify, hold infiltration moisture in rainy season, ensure that the pedestrian is current, prolong the life on pavement simultaneously.
Description
Technical Field
The utility model relates to a pavement structure especially relates to a pavement structure of mating formation permeates water.
Background
Sidewalks are important structures in municipal works, covering a significant part of the land area in cities, and are one of the most people-related infrastructures. The traditional pavement is paved by hardened non-permeable pavement or semi-permeable pavement with certain water permeability on the surface.
Convenient traffic facilities, lay level road and bring very big convenience for people, simultaneously, impervious road surface also brings a great deal of negative effects for the ecological environment in city, and serious environment and social problem appear and have:
1) natural rainfall cannot naturally permeate into the ground, so that the surface plants cannot grow normally;
2) the air-tight road surface is difficult to exchange heat and moisture with air, lacks the capability of adjusting the temperature and the humidity of the urban ground surface, and generates the so-called 'heat island effect';
3) the water accumulation is easy to occur on the surface of the watertight road, water mist or water film is easy to form, and the road is easy to freeze after being snowed in winter, so that the comfort and the safety of the road are reduced;
4) when rainfall is concentrated in a short time, rainwater can only be discharged into rivers through a drainage facility, so that the burden of the urban drainage facility is greatly increased, and the traffic difficulty caused by accumulated water is easy to occur.
For all the reasons, the sidewalk is made of cement concrete or materials with extremely low permeability coefficients such as asphalt, so that the urban burden is increased. Therefore, a pavement paving structure with high water permeability is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a pavement structure of permeating water is provided, solve above-mentioned problem.
The utility model provides a technical scheme who adopts for solving above-mentioned technical problem provides a permeable pavement paving structure, from bottom to top includes road bed, bed course, basic unit, screed-coat and surface course in proper order, the bed course adopts the graded broken stone to lay, the basic unit is permeable concrete layer, the screed-coat adopts the middlings dry mix to lay, the surface course adopts prefabricated permeable brick to lay; a geotextile layer is laid between the cushion layer and the base layer, and the geotextile layer is formed by overlapping permeable geotextiles; a water guide blind pipe is embedded in the cushion layer close to the geotextile layer, a water guide hole is formed in the water guide blind pipe, and a filter screen is wrapped outside the water guide blind pipe.
Furthermore, the lap joint length of the permeable geotextile of the geotextile layer is more than or equal to 20cm, upturned side cloth is reserved on two sides of the geotextile layer, and the reserved width of the upturned side cloth is 15-20 cm.
Further, the water guide blind pipe comprises a longitudinal water guide blind pipe and a transverse water guide blind pipe, and the longitudinal water guide blind pipe is communicated with the transverse water guide blind pipe; the longitudinal water guide blind pipe is arranged along the edge of the cushion layer, and the longitudinal water guide blind pipe is provided with a slope along the longitudinal slope of the sidewalk; the horizontal water guide blind pipes are arranged at equal intervals and are communicated with a municipal drainage pipe.
Furthermore, the distance between the transverse water guide blind pipes is 10-15 m.
Furthermore, the upper part of the water guide blind pipe is covered and backfilled with medium sand until the height of the top of the cushion layer is increased.
Furthermore, two layers of filter screens are wrapped outside the water guide blind pipe, and the filter screens are made of permeable geotextile.
Furthermore, the edge of the base layer is provided with a kerbstone, the water-saturated compressive strength of the kerbstone is more than or equal to 100MPa, and the bending strength of the kerbstone is more than or equal to 8 MPa; adopt cement mortar pouring joint and form the spill caulking between the curb, spill caulking width is 8mm, and the degree of depth is 5 mm.
Furthermore, the roadbed is formed by rolling and compacting the plain soil, and the compactness of the roadbed is more than or equal to 95%.
Furthermore, the compression strength of the prefabricated water permeable brick is greater than or equal to Cc40, the breaking strength is greater than or equal to Cf4.0, the antiskid grade is R3, and the antiskid performance index BPN is greater than or equal to 65.
Furthermore, the water guide blind pipe is made of a PVC pipe, and the diameter of the water guide blind pipe is 20-40 mm.
The utility model discloses contrast prior art has following beneficial effect: the utility model provides a permeable pavement paving structure, which is characterized in that a geotextile layer is arranged above a cushion layer through multilayer arrangement, and a permeable blind pipe is arranged below the geotextile layer to purify and store the water seepage; through setting up the blind pipe slope that permeates water and connect the municipal drainage pipe, absorb, purify, hold infiltration moisture in rainy season, ensure that the pedestrian is current, the life on extension pavement moreover, the rainwater of collecting through municipal drainage pipe connection still can carry out the reutilization simultaneously.
Drawings
Fig. 1 is the utility model discloses permeable pavement structure's schematic diagram.
In the figure:
4 leveling layer 5 surface 6 geotextile layer
Detailed Description
The invention is further described with reference to the following figures and examples.
Fig. 1 is the utility model discloses permeable pavement structure's schematic diagram.
Referring to fig. 1, the permeable sidewalk pavement structure of the embodiment of the present invention sequentially includes, from bottom to top, a roadbed 1, a cushion layer 2, a base layer 3, a leveling layer 4 and a surface layer 5, wherein the cushion layer 2 is laid by graded broken stones, the base layer 3 is a permeable concrete layer, the leveling layer 4 is laid by dry mixing with medium sand, and the surface layer 5 is laid by prefabricated permeable bricks; a geotextile layer 6 is laid between the cushion layer 2 and the base layer 3, and the geotextile layer 6 is formed by overlapping permeable geotextiles; a water guide blind pipe is embedded in the cushion layer 2 close to the geotextile layer 6, a water guide hole is formed in the water guide blind pipe, and a filter screen is wrapped outside the water guide blind pipe.
The utility model discloses pavement structure permeates water, geotechnological cloth overlap joint length more than or equal to 20cm that permeates water of geotechnological cloth layer 6, turn over the side cloth on reserving in geotechnological cloth layer both sides, it reserves the width for 15-20cm to turn over the side cloth on. During specific implementation, after the graded broken stones are constructed to the designed elevation, the permeable geotextile is installed according to the width range of the graded broken stones, 15cm of permeable geotextile is reserved on two sides so as to be turned over on the side face, and the reserved parts are protected. The geotextile that permeates water adopts the overlap joint form to connect, and overlap joint length is not less than 20cm, and adopts the rubble to carry out compaction fixed after the overlap joint is good, ensures whole extension, and the interface is closely glued, prevents that the interface from leaking, seeping water. Because the width of the sidewalk is smaller, the permeable geotextile reduces the longitudinal lap joint of the road as much as possible, and the blanking length is prevented from being insufficient during blanking. When in longitudinal lap joint, the lower part is paved first and then the upper part is paved, and when in transverse lap joint, the lower part is paved first and then the upper part is paved.
The permeable sidewalk pavement structure provided by the embodiment of the utility model has the advantages that the water guide blind pipe comprises a longitudinal water guide blind pipe and a transverse water guide blind pipe, and the longitudinal water guide blind pipe is communicated with the transverse water guide blind pipe; the longitudinal water guide blind pipe is arranged along the edge of the cushion layer, and the longitudinal water guide blind pipe is provided with a slope along the longitudinal slope of the sidewalk; the transverse water guide blind pipes are arranged at equal intervals and are communicated with a municipal drainage pipe; the distance between the transverse water guide blind pipes is 10-15 m. Covering and backfilling the upper part of the water guide blind pipe with medium sand until the top elevation of the cushion layer 2 is reached; two layers of filter screens are wrapped outside the water guide blind pipe, and the filter screens are made of permeable geotextile; the water guide blind pipe is made of a PVC pipe, and the diameter of the water guide blind pipe is 20-40 mm. In the concrete implementation, because the sidewalk is long but is disconnected at each designed and planned intersection, a continuous section is used as a unit to be provided with the pre-buried water guide blind pipe, a non-motor vehicle lane is arranged between the sidewalk and the sunken green land, and two pipelines are needed to be arranged, namely a longitudinal water guide blind pipe of the road and a transverse water guide blind pipe of the road. The road is longitudinally arranged on the edge of the cushion layer and is close to a kerb, a PVC water guide blind pipe with the diameter of 30mm is arranged, fine holes are densely distributed on the pipe wall and wrap the two layers of the permeable geotextile filter screen, the water guide blind pipe is provided with a slope along the longitudinal slope of the sidewalk, and the pipe joint connection adopts electric hot melting connection. The transverse water guide blind pipes are PVC pipes, one transverse water guide blind pipe with the diameter of 30mm is arranged at intervals of 10m, transversely penetrates through the non-motor vehicle lane and extends into the concave green space pebble filter tank, and then is communicated with a municipal drainage pipe, and the transverse water guide blind pipes are 1% in gradient and preferably extend into the concave green space by 5 cm. When the non-motor road is constructed, the transverse embedded aqueducts are protected by attention so as to prevent blockage caused by damage. Covering and backfilling the water guide blind pipe with medium sand within 10cm above the water guide blind pipe until the top elevation of a gravel layer is reached.
The permeable sidewalk pavement structure provided by the embodiment of the utility model is characterized in that the edge of the base layer 3 is provided with a kerbstone, the water-saturated compressive strength of the kerbstone is more than or equal to 100MPa, and the bending strength is more than or equal to 8 MPa; adopt cement mortar pouring joint and form the spill caulking between the curb, spill caulking width is 8mm, and the degree of depth is 5 mm. During concrete implementation, according to design structure size and position, carry out the curb and measure the laying-out, adopt the stake to carry out preliminary location, adopt the nail to carry out accurate positioning on the stake at last. During construction lofting, a control pile is arranged at intervals of 5m, line type control piles are encrypted at curve sections, the height of each control pile is not lower than 5cm higher than the top height of the designed curb, the top elevation is designed according to the curb, the foundation is cleaned through hanging lines, and the width and the elevation of the foundation meet the design requirements. Intensively mixing and transporting M10 mortar to a construction site, paving 2cm thick foundation bottom, mounting curb after leveling, and strictly controlling the height difference, verticality and overall line type of the top surface and the side level between two blocks in the mounting process. Cardboard or other cushion blocks are adopted in the kerbstone handling process to prevent the corner from being damaged in the handling process. And after the construction of the kerbstone, 1:2 cement mortar is adopted for crack pouring, the grouting needs to be fully embedded, the pointing joint is concave, the width is 0.8cm, the depth is 0.5cm, the width of the crack is uniformly controlled by adopting a plastic cushion block, and the consistent width of the crack is kept. After the kerbstone is laid, a backrest concrete formwork is erected, construction broken joints are arranged every 10m, the broken joints are isolated by adopting 2cm boards, and the broken joints are arranged in the middle of a single kerbstone. When concrete is poured, a manual shovel is adopted to fill the concrete into the mold, and the vibration rod vibrates the concrete tightly. And (4) manually controlling the thickness and leveling the pervious cement concrete. And after the permeable cement concrete is laid, compacting by using a small road roller according to the principle of slow firstly, fast secondly, low firstly and high secondly. And the parts with the flatness not meeting the requirements in the rolling process are manually leveled and supplemented with materials. The pervious cement concrete on the water guide blind pipe is not suitable for being rolled by a road roller, and manual leveling and compaction are required to be assisted. The detected compactness is more than or equal to 96 percent, and the molding is required to be carried out once.
The utility model discloses pavement structure of permeating water, road bed 1 is rolled the tamp by plain soil and is formed, road bed 1's closely knit degree more than or equal to 95%. During specific implementation, the center line is restored before roadbed construction, and the section is retested. Before filling, according to the design elevation, reserve 3cm height and postpone filling, control the loose thickness and the effective width of spreading out the soil, utilize the leveler to pave the flattening, manual cooperation adopts light-duty compaction equipment to roll. And after compaction, detecting the compaction degree by adopting a cutting ring method or a sand filling method, wherein the compaction degree of the roadbed soil base is more than or equal to 95%, and checking the elevation and the cross slope to ensure that the compaction degree, the flatness and the cross slope elevation meet the requirements.
Specifically, the utility model discloses pavement structure permeates water, screed-coat 4 adopts the middlings to mix futilely and lays, treat after the cement concrete construction that permeates water and reach certain intensity value after, carry out the middlings and mix futilely and lay, earlier whole 1cm of laying, artifical make a round trip to spread out and sweep dry sand, make dry sand inlay the gap of large pore concrete really, then spread out dry sand according to the design elevation again, consider that dry sand can subside when meeting water after the rainy day infiltration of pavement, subside after laying in order to prevent the pavement brick and lead to brick face and curb face to produce the difference in height, suitably reserve 5-8mm settlement with the elevation during sanding, be used for offsetting and subside poor.
The utility model discloses pavement structure permeates water, prefabricated brick compressive strength that permeates water more than or equal to Cc40, rupture strength more than or equal to Cf4.0, the antiskid level is R3, skid resistance index BPN more than or equal to 65. Before the prefabricated water permeable bricks of the sidewalk are paved, the structural sizes between the bricks and the two kerbs are strictly checked, and the paving height and the flatness of the medium sand are manually checked through dry mixing. The non-motor vehicle pavement is characterized in that bricks are laid from one end to the other end of a closed section sidewalk outwards from the side of a non-motor vehicle pavement, each brick is placed and then is horizontally hammered to be tight, other substances are prevented from being embedded into the brick joints, the brick joints are uneven and not compact, a guiding rule is adopted for flatness inspection, and if a height difference exists between every two adjacent bricks, the thickness of dry sand is adjusted by an ash knife so as to ensure that the flatness of the brick surfaces meets the requirement. And after paving of one section, fine sand is adopted for seam sweeping treatment.
To sum up, the permeable sidewalk pavement structure of the embodiment of the utility model is provided with a geotechnical cloth layer above a cushion layer and a permeable blind pipe below the geotechnical cloth layer through multilayer arrangement to purify and store the water seepage; through setting up the blind pipe slope that permeates water and connect the municipal drainage pipe, absorb, purify, hold infiltration moisture in rainy season, ensure that the pedestrian is current, the life on extension pavement moreover, the rainwater of collecting through municipal drainage pipe connection still can carry out the reutilization simultaneously.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The permeable sidewalk pavement structure is characterized by sequentially comprising a roadbed (1), a cushion layer (2), a base layer (3), a leveling layer (4) and a surface layer (5) from bottom to top, wherein the cushion layer (2) is paved by graded broken stones, the base layer (3) is a permeable concrete layer, the leveling layer (4) is paved by medium sand dry mixing, and the surface layer (5) is paved by prefabricated permeable bricks; a geotextile layer (6) is laid between the cushion layer (2) and the base layer (3), and the geotextile layer (6) is formed by overlapping permeable geotextiles; a water guide blind pipe is embedded in the cushion layer (2) close to the geotextile layer (6), a water guide hole is formed in the water guide blind pipe, and a filter screen is wrapped outside the water guide blind pipe.
2. The permeable sidewalk pavement structure according to claim 1, wherein the overlapping length of the permeable geotextile of the geotextile layer (6) is greater than or equal to 20cm, upturned side cloths are reserved on two sides of the geotextile layer, and the width of the upturned side cloths is 15-20 cm.
3. The permeable sidewalk pavement structure of claim 1, wherein the water guide blind pipes comprise longitudinal water guide blind pipes and transverse water guide blind pipes, and the longitudinal water guide blind pipes are communicated with the transverse water guide blind pipes; the longitudinal water guide blind pipe is arranged along the edge of the cushion layer, and the longitudinal water guide blind pipe is provided with a slope along the longitudinal slope of the sidewalk; the horizontal water guide blind pipes are arranged at equal intervals and are communicated with a municipal drainage pipe.
4. The permeable sidewalk pavement structure of claim 3, wherein the transverse water guiding blind pipes are arranged at a distance of 10-15 m.
5. The permeable sidewalk paving structure according to claim 1, wherein the upper part of the water guide blind pipe is covered and backfilled with medium sand to the top elevation of the cushion layer (2).
6. The permeable sidewalk pavement structure of claim 1, wherein the water guiding blind pipe is wrapped with two layers of filter screens, and the filter screens are permeable geotextiles.
7. The permeable sidewalk paving structure according to claim 1, wherein the edge of the base layer (3) is provided with a kerbstone, the kerbstone has a water-saturated compressive strength of more than or equal to 100MPa and a bending strength of more than or equal to 8 MPa; adopt cement mortar pouring joint and form the spill caulking between the curb, spill caulking width is 8mm, and the degree of depth is 5 mm.
8. The permeable sidewalk paving structure according to claim 1, wherein the roadbed (1) is compacted by rolling and compacting plain soil, and the compactness of the roadbed (1) is greater than or equal to 95%.
9. The permeable sidewalk paving structure of claim 1, wherein the compression strength of the prefabricated permeable bricks is greater than or equal to Cc40, the breaking strength is greater than or equal to Cf4.0, the antiskid grade is R3, and the antiskid performance index BPN is greater than or equal to 65.
10. The permeable sidewalk paving structure of claim 1, wherein the water guide blind pipe is made of a PVC pipe, and the diameter of the water guide blind pipe is 20-40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921924450.4U CN211199978U (en) | 2019-11-09 | 2019-11-09 | Pavement paving structure for permeable sidewalk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921924450.4U CN211199978U (en) | 2019-11-09 | 2019-11-09 | Pavement paving structure for permeable sidewalk |
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| CN211199978U true CN211199978U (en) | 2020-08-07 |
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| CN201921924450.4U Active CN211199978U (en) | 2019-11-09 | 2019-11-09 | Pavement paving structure for permeable sidewalk |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726325A (en) * | 2020-12-25 | 2021-04-30 | 中国电建集团贵阳勘测设计研究院有限公司 | Sidewalk drainage structure and combined drainage method of sidewalk drainage structure and drainage curb |
| CN114369981A (en) * | 2021-10-27 | 2022-04-19 | 云南励砺建筑工程有限公司 | Construction and paving method for sidewalk |
| CN116122096A (en) * | 2023-03-22 | 2023-05-16 | 广东长宏建设集团有限公司 | Pavement permeable pavement and construction method thereof |
-
2019
- 2019-11-09 CN CN201921924450.4U patent/CN211199978U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726325A (en) * | 2020-12-25 | 2021-04-30 | 中国电建集团贵阳勘测设计研究院有限公司 | Sidewalk drainage structure and combined drainage method of sidewalk drainage structure and drainage curb |
| CN114369981A (en) * | 2021-10-27 | 2022-04-19 | 云南励砺建筑工程有限公司 | Construction and paving method for sidewalk |
| CN116122096A (en) * | 2023-03-22 | 2023-05-16 | 广东长宏建设集团有限公司 | Pavement permeable pavement and construction method thereof |
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