CN111101419B - Full water-permeable pavement structure suitable for large gradient - Google Patents
Full water-permeable pavement structure suitable for large gradient Download PDFInfo
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- CN111101419B CN111101419B CN202010070344.5A CN202010070344A CN111101419B CN 111101419 B CN111101419 B CN 111101419B CN 202010070344 A CN202010070344 A CN 202010070344A CN 111101419 B CN111101419 B CN 111101419B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
- E01C11/226—Coherent pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a full-permeable pavement structure suitable for a large slope, which comprises a permeable pavement, a water storage base layer, a subbase layer and a soil foundation, wherein the permeable pavement is a water-permeable pavement structure; the soil foundation is of a stepped structure, subbase layers are laid on all stepped surfaces of the soil foundation, the earthwork cloth is arranged among the rest subbase layers of the soil foundation, and all the subbase layers form the stepped structure; the water storage base layer is laid on the subbase layer, the top surface of the water storage base layer is a slope, the water permeable surface layer is laid on the water storage base layer, and the top surface of the water permeable surface layer is a slope; a water baffle is arranged between the step surfaces of the adjacent subbase layers, the bottom of the water baffle is contacted with the upper surface of the higher subbase layer, and the top of the water baffle is positioned in the water permeable surface layer; the descending trend of all the step structures and the slopes is consistent. The full-permeable water pavement structure provided by the invention solves the problems that the water infiltration amount of the existing permeable pavement in the slope section is low and the water volume of the pavement at the downstream of the slope is increased to generate the surface water by the design of the stepped water storage base layer and the water baffle.
Description
Technical Field
The invention relates to a full-water-permeable pavement structure suitable for a large slope, and belongs to the technical field of pavement structures.
Background
In recent years, with the proposal of the concept of 'sponge city', various cities and regions in China respond positively, and various sponge measures are adopted to reform and construct the existing site. Considering that the road land area in the urban construction land can reach 15-20%, the water penetration of the municipal road pavement is a key part for sponge urban construction.
The full-permeable water surface is suitable for sidewalks, non-motor vehicle lanes and landscape hard lands, and rainwater can permeate downwards along the permeable surface layer, the water storage base layer and the subbase layer of the full-permeable water surface and finally permeate into roadbed soil. The existing practical experience shows that the permeability of the permeable pavement is better in the region with flat terrain, such as parking lots, roads with smaller gradient and the like. However, when the slope is more than 5%, the drainage efficiency of the road surface is obviously reduced, and surface runoff is generated below the slope. In fact, due to the slope, the upstream water flows downward along the slope while seeping downward, which causes the phenomena of small upstream water amount, large downstream water amount, surplus upstream permeability and insufficient downstream permeability, resulting in the final re-overflow of the water flow from the downstream road surface, as shown in fig. 1. In order to fully exert the permeability of the permeable pavement and promote the faster development of sponge cities in China, a permeable pavement structure suitable for large slopes needs to be researched.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a full permeable pavement structure suitable for large slopes, and solves the problems that the water infiltration amount of the existing permeable pavement at the bottom end of a slope is low, and the water amount of the pavement downstream of the slope is increased to generate water accumulation on the pavement.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a full-permeable waterway surface structure suitable for a large slope comprises a permeable surface layer, a water storage base layer, a subbase layer and a soil foundation;
the soil foundation is of a stepped structure, subbase layers are laid on all stepped surfaces of the soil foundation, geotextile is arranged between the soil foundation and the subbase layers, and all the subbase layers form the stepped structure; the water storage base layer is laid on the subbase layer, the top surface of the water storage base layer is a slope, the water permeable surface layer is laid on the water storage base layer, and the top surface of the water permeable surface layer is a slope; a water baffle is arranged between the step surfaces of the adjacent subbase layers, the bottom of the water baffle is contacted with the upper surface of the higher subbase layer, and the top of the water baffle is positioned in the water permeable surface layer; the descending trend of all the step structures and the slopes is consistent.
Further, the ratio of the width to the length of each step in the stepped structure of the soil foundation is the road surface gradient.
Further, the soil foundation is a natural rammed foundation.
Further, the geotextile is a permeable geotextile mesh.
Further, the subbase layer is water-permeable graded macadam.
Further, the water storage base layer is made of pervious concrete, pervious graded broken stones or pervious cement stabilized broken stones.
Further, the permeable surface layer is a permeable concrete surface layer, a permeable asphalt surface layer or a prefabricated face brick.
Furthermore, the permeable surface layer is a permeable concrete surface layer, the strength grade is not less than C20, the permeability coefficient is not less than 0.5mm/s, and the thickness is at least 60 mm.
Further, the top of the water baffle is positioned at one half of the thickness of the water permeable surface layer.
Further, the water baffle is made of PVC materials.
Has the advantages that: according to the full-water-permeable pavement structure suitable for the large gradient, the penetration surface is inclined to be straight through the stepped water storage base layer, so that the vertical penetration rate of water flow on a slope pavement is increased; the water baffle is matched for use, a step-shaped structure is formed in the water storage base layer and the water permeable surface layer, the water storage capacity of the upstream pavement is increased, and the problem of uneven water volume spatial distribution is solved. Through the make full use of to the infiltration capacity on slope upper reaches road surface, reached the purpose that reduces slope low reaches water yield, solved current permeable pavement at the low reaches road surface in slope district because the water yield increases and produce the problem of surface ponding.
Drawings
FIG. 1 is a schematic view of a prior art permeable pavement structure;
FIG. 2 is a schematic view of a permeable pavement structure of the present invention;
fig. 3 is a schematic structural view of one of the staircase cells of fig. 2.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 2 and 3, the full-permeable pavement structure suitable for the large slope comprises a permeable surface layer 1, a water storage base layer 2, a subbase layer 3, geotextiles 5 and a soil base 4. The soil foundation 4 is of a stepped structure, the subbase layers 3 are laid on all stepped surfaces of the soil foundation 4, and all the subbase layers 3 also form the stepped structure; the ratio of the width to the length of the soil foundation 4 of each permeable roadbed unit is equal to the gradient of the road surface; the soil foundation 4 is a natural rammed foundation, and the subbase layer 3 is water-permeable graded broken stone. The geotextile 5 is arranged between the subbase 3 and the soil foundation 4, the geotextile 5 is a permeable geotextile mesh fabric, so that the bearing capacity of a soil body can be improved, a reverse filtering effect can be achieved, and the situation that fine particles in the soil foundation 4 rise under the capillary action of water to cause the pore blockage of the subbase 3 is prevented.
The water storage base layer 2 is laid on all the subbase layers 3, the top surface of the water storage base layer 2 is a slope, and the water storage base layer 2 is made of pervious concrete, pervious graded broken stones or pervious cement stabilized broken stones and mainly bears load, permeates water and stores water. The downstream side of the water-retaining base layer 2 has a thickness of at least 150 mm.
The permeable surface layer 1 is laid on the water storage base layer 2, and the top surface of the permeable surface layer 1 is a slope. The permeable surface layer 1 is a permeable concrete surface layer, a permeable asphalt surface layer or a prefabricated face brick.
Preferably, the permeable surface layer 1 is a permeable concrete surface layer, the strength grade is not less than C20, the permeability coefficient is not less than 0.5mm/s, and the thickness is at least 60 mm.
A water baffle 6 is arranged between the step surfaces of the adjacent subbase layers 3, and the water baffle 6 is made of PVC material and has the thickness of 20 mm; the bottom of the water baffle 6 is contacted with the upper surface of the higher subbase layer 3, and the top of the water baffle is positioned at one half of the thickness of the water permeable surface layer 1, so that the water baffle plays a role in preventing water flow from moving laterally; the water baffle 6, the soil foundation 4, the subbase layer 3 and the water storage base layer 2 form a step-shaped water storage structure together, and the descending trend of all step-shaped structures and slopes is consistent.
The size design method of the full water-permeable pavement structure provided by the invention comprises the following steps:
as shown in fig. 3, the amount of water added per unit time is 0.1 for a single permeable roadbed unitit(ii)/60, the amount of water leaking out of the bottom per unit time was 3600qt/60, taking into account the porosity of the impoundment base layervFor the impoundment base to be able to store the rainfall time istThe thickness of the full water-permeable surface structure of the rainwater in the water tank is at leastH，H=(0.1i-3600q)t/60vIn the formula (I), wherein,Hin order to ensure the pavement thickness (cm),ithe rainfall intensity (mm/h) is designed for the local area,qis the average permeability coefficient (cm/s) of the soil base,tthe duration of the rainfall (min),vthe average porosity (%) of the impoundment base layer.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (9)
1. The utility model provides a totally water-permeable pavement structure suitable for heavy grade, its characterized in that: comprises a water permeable surface layer (1), a water storage base layer (2), a subbase layer (3) and a soil base (4);
the soil foundation (4) is of a stepped structure, the subbase layers (3) are laid on the stepped surfaces of the soil foundation (4), the geotextile (5) is arranged between the soil foundation (4) and the subbase layers (3), and all the subbase layers (3) form the stepped structure; the water storage base layer (2) is laid on the subbase layer (3), the top surface of the water storage base layer (2) is a slope, the water permeable surface layer (1) is laid on the water storage base layer (2), and the top surface of the water permeable surface layer (1) is a slope; a water baffle (6) is arranged between the step surfaces of the adjacent subbase layers (3), the bottom of the water baffle (6) is contacted with the upper surface of the higher subbase layer (3), and the top of the water baffle is positioned in the water permeable surface layer (1); the descending trend of all the step structures is consistent with that of the slope;
the top of the water baffle (6) is positioned at one half of the thickness of the water permeable surface layer (1).
2. The full permeable waterway structure of claim 1, wherein: the ratio of the width to the length of each step in the stepped structure of the soil foundation (4) is the road surface gradient.
3. The full water permeable pavement structure suitable for the heavy slope according to claim 2, characterized in that: the soil foundation (4) is a natural rammed foundation.
4. The full permeable waterway structure of claim 1, wherein: the geotextile (5) is a permeable geotextile mesh.
5. The full permeable waterway structure of claim 1, wherein: the subbase layer (3) is water-permeable graded broken stone.
6. The full permeable waterway structure of claim 1, wherein: the water storage base layer (2) is made of pervious concrete, pervious graded broken stones or pervious cement stabilized broken stones.
7. The full permeable waterway structure of claim 1, wherein: the permeable surface layer (1) is a permeable concrete surface layer, a permeable asphalt surface layer or a prefabricated face brick.
8. The structure of claim 7, wherein the structure is suitable for a full water-permeable surface with a large slope, and comprises: the permeable surface layer (1) is a permeable concrete surface layer, the strength grade is not less than C20, the permeability coefficient is not less than 0.5mm/s, and the thickness is at least 60 mm.
9. The full permeable waterway structure of claim 1, wherein: the water baffle (6) is made of PVC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070344.5A CN111101419B (en) | 2020-01-21 | 2020-01-21 | Full water-permeable pavement structure suitable for large gradient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070344.5A CN111101419B (en) | 2020-01-21 | 2020-01-21 | Full water-permeable pavement structure suitable for large gradient |
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| Publication Number | Publication Date |
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| CN111101419A CN111101419A (en) | 2020-05-05 |
| CN111101419B true CN111101419B (en) | 2021-11-30 |
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| CN202010070344.5A Active CN111101419B (en) | 2020-01-21 | 2020-01-21 | Full water-permeable pavement structure suitable for large gradient |
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Citations (8)
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| KR20100114726A (en) * | 2009-04-16 | 2010-10-26 | 주식회사 바우 컨설탄트 | The inlet well cover for anti-skid |
| JP2012026145A (en) * | 2010-07-22 | 2012-02-09 | Sanwa Kogyo Kk | Construction method for water passage-road and side block for water passage-road |
| CN203923839U (en) * | 2014-06-03 | 2014-11-05 | 张秋英 | Road surface, a kind of permeable gardens |
| CN105544341A (en) * | 2015-12-04 | 2016-05-04 | 东南大学 | Quick draining pavement structure for urban low-lying roads |
| CN106082783A (en) * | 2016-06-14 | 2016-11-09 | 陈毅然 | Brand-new porous pavement full impregnated water screed-coat material and full permeable pavement structure |
| CN107558325A (en) * | 2017-08-16 | 2018-01-09 | 中冶京诚工程技术有限公司 | Heavy grade road permeable pavement is slow to ooze structure and its construction method |
| CN207828727U (en) * | 2017-10-25 | 2018-09-07 | 上海市市政规划设计研究院 | A kind of full impregnated pavement structure |
| CN209741599U (en) * | 2019-02-15 | 2019-12-06 | 济南市市政工程设计研究院（集团）有限责任公司 | can improve road surface structure of basic unit intensity of permeating water |
-
2020
- 2020-01-21 CN CN202010070344.5A patent/CN111101419B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100114726A (en) * | 2009-04-16 | 2010-10-26 | 주식회사 바우 컨설탄트 | The inlet well cover for anti-skid |
| JP2012026145A (en) * | 2010-07-22 | 2012-02-09 | Sanwa Kogyo Kk | Construction method for water passage-road and side block for water passage-road |
| CN203923839U (en) * | 2014-06-03 | 2014-11-05 | 张秋英 | Road surface, a kind of permeable gardens |
| CN105544341A (en) * | 2015-12-04 | 2016-05-04 | 东南大学 | Quick draining pavement structure for urban low-lying roads |
| CN106082783A (en) * | 2016-06-14 | 2016-11-09 | 陈毅然 | Brand-new porous pavement full impregnated water screed-coat material and full permeable pavement structure |
| CN107558325A (en) * | 2017-08-16 | 2018-01-09 | 中冶京诚工程技术有限公司 | Heavy grade road permeable pavement is slow to ooze structure and its construction method |
| CN207828727U (en) * | 2017-10-25 | 2018-09-07 | 上海市市政规划设计研究院 | A kind of full impregnated pavement structure |
| CN209741599U (en) * | 2019-02-15 | 2019-12-06 | 济南市市政工程设计研究院（集团）有限责任公司 | can improve road surface structure of basic unit intensity of permeating water |
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| CN111101419A (en) | 2020-05-05 |
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