CN112359658A - Expanded land area sponge urban road based on miniature seepage well - Google Patents
Expanded land area sponge urban road based on miniature seepage well Download PDFInfo
- Publication number
- CN112359658A CN112359658A CN202011082345.8A CN202011082345A CN112359658A CN 112359658 A CN112359658 A CN 112359658A CN 202011082345 A CN202011082345 A CN 202011082345A CN 112359658 A CN112359658 A CN 112359658A
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- China
- Prior art keywords
- permeable
- water
- layer
- land area
- urban road
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000010426 asphalt Substances 0.000 claims abstract description 28
- 239000004746 geotextile Substances 0.000 claims abstract description 28
- 239000004576 sand Substances 0.000 claims abstract description 22
- 239000012466 permeate Substances 0.000 claims abstract 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 20
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 22
- 239000004575 stone Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012615 aggregate Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
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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
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/002—Design or lay-out of roads, e.g. street systems, cross-sections ; Design for noise abatement, e.g. sunken road
-
- 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
-
- 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
-
- 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
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- 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
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an expanded land area sponge urban road based on a micro seepage well, which comprises the following components: the water permeable filter cores are distributed in the roadbed, PVC pipes are arranged on the outer side of the upper part of the water permeable filter cores, a sand cushion layer is arranged at the bottom of the water permeable filter cores, the middle part of the pavement structure is a concrete pavement, and the two sides of the pavement structure are water permeable asphalt layers which are in a strip shape and are connected with the middle concrete pavement; and a sand cushion layer, a permeable geotextile layer and a waterproof geotextile layer are sequentially arranged between the permeable asphalt layer and the roadbed. The invention has the beneficial effects that: the permeation channel of surface accumulated water is increased through the permeable asphalt, the accumulated water seepage speed is accelerated, the accumulated water can rapidly and sequentially flow into the sand cushion layer and the permeable filter element, the rainwater passing through the permeable filter element can rapidly permeate to the periphery, and the surface accumulated water is reduced; the waterproof geotextile prevents the surface from being damaged by the water absorption expansion of the expansive soil caused by the infiltration of accumulated water into the surface expansive soil on the two sides of the road.
Description
Technical Field
The invention belongs to the technical field of sponge city construction, and particularly relates to an expanded land area sponge city road based on a micro seepage well.
Background
When a rainy season comes, the rainfall of the city is suddenly increased, so that the drainage pressure of a city drainage system is increased, the problem of urban road ponding is serious, and drainage systems of some cities are old or the capacity of the drainage systems is insufficient, so that the urban ponding cannot be quickly dissipated, especially the urban road ponding cannot be effectively solved. At present, a sponge city is built to absorb, seep and store water, so that the problem of urban road ponding can be well solved, and ponding can be quickly dissipated.
The existing sponge urban road is mainly used for changing the road foundation soil layer structure form and the soil layer soil mode, and the aim of accelerating the road ponding seepage is fulfilled. However, for the expansive soil area, the mode has some defects, the structural form of the soil layer of the road subgrade and the soil layer soil are changed, other soil needs to be conveyed to the road construction area, the cost for conveying the soil is high, and the consumption of manpower and material resources is high. And because the volume of the expansive soil is expanded violently after soaking in water, and the volume is obviously contracted after losing water, the sponge urban road is more difficult to realize in the expansive soil area.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a sponge urban road applied to expansive soil areas. The method is used for solving the problems that the urban road water accumulation in the expansive land area is serious and is difficult to dissipate for a long time, and the surface expansive soil absorbs water to expand so as to damage the road surface.
An expanded land area sponge urban road based on miniature seepage wells: the filter comprises a pavement structure, a roadbed structure and a plurality of permeable filter elements; the roadbed structure is uniformly provided with permeable filter element holes and permeable filter elements; the permeable filter elements are distributed in the roadbed, PVC pipes are arranged on the outer side of the upper part of the permeable filter elements, and a sand cushion layer is arranged at the bottom of the permeable filter elements; the middle part of the pavement structure is a concrete pavement, and the two sides of the pavement structure are permeable asphalt layers which are connected with the middle concrete pavement in a strip shape; a sand cushion layer, a permeable geotextile layer and a waterproof geotextile layer are sequentially arranged between the permeable asphalt layer and the roadbed; the permeable filter element is made of coarse aggregate, cement, water and an additive according to a certain proportion, is doped with steel fibers according to a certain proportion, has a large number of water seepage holes on the surface, is divided into an upper part and a lower part, and is arranged in a roadbed at uniform intervals; the PVC pipe is arranged on the outer side of the upper water-permeable filter element.
The invention has the beneficial effects that: the permeable asphalt is arranged on the two sides of the road and cannot bear overlarge vehicle load, so that the permeable asphalt with larger water permeability can be used, the water seepage area of the road surface is enlarged, and accumulated water infiltration channels are increased through a large number of holes of the permeable asphalt; when the permeable asphalt is replaced after being damaged, the sand cushion layer provides a buffer zone between the permeable asphalt and the geotextile, so that the geotextile is prevented from being damaged, and a downward seepage channel is provided for accumulated water due to good water seepage performance of the geotextile; the permeable geotextile can separate the sand and stone of the upper sand cushion layer outside the permeable filter element, so as to prevent the sand and stone from entering the permeable filter element and blocking a permeable channel of the permeable filter element, thereby preventing the problem of water permeability reduction caused by the sand and stone; the waterproof geotextile blocks the accumulated water seeped from the upper part and prevents the accumulated water from seeping into the surface expansive soil to cause the water absorption expansion of the expansive soil to damage the road surface; the through holes of the waterproof geotextile provide seepage channels for seeping water; connecting the waterproof geotextile and the PVC pipe by using industrial glue, and preventing accumulated water from permeating into the surface expansive soil from gaps by penetrating into the permeable asphalt on two sides of the waterproof geotextile; the PVC pipe leads accumulated water to the lower part of the permeable filter element, so that the expanded soil on the surface layer of the roadbed cannot damage the pavement due to water absorption expansion; the surface of the permeable filter element is provided with a large number of water seepage holes, the permeable filter element is long enough and can go deep into the ground, and a better channel is provided for the seepage of rainfall water to the deep part of the roadbed.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an expanded land area sponge urban road of the present invention;
FIG. 2 is a transverse cross-sectional view of an expanded land area sponge urban road of the present invention;
FIG. 3 is a diagram of the road surface effect of the sponge urban road in the expansive soil area.
In the figure:
1. permeable asphalt 2, sand cushion 3 and permeable geotextile
4. Waterproof geotextile 5, permeable filter element 6 and PVC pipe
7. Concrete pavement
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 1, the expanded land area sponge urban road based on the micro seepage well comprises permeable asphalt 1, a sand cushion layer 2, permeable geotextile 3, impermeable geotextile 4, a permeable filter element 5, a PVC pipe 6 and a concrete pavement 7; the pervious asphalt 1 is in a strip shape, and the thickness of the pervious asphalt is 30 cm; the sand cushion layer 2 is arranged under the water-permeable asphalt 1 and under the water-permeable filter element 5, and the sand cushion layer 2 under the water-permeable asphalt 1 is in a strip shape, and the thickness of the sand cushion layer is 9.5 cm; the sand cushion layer 2 under the water permeable filter element 5 is columnar and is filled with sand, the thickness of the sand cushion layer is 10cm, the diameter of the sand cushion layer is 10cm, and a certain downward seepage channel is provided for accumulated water.
The geotextile layer consists of a waterproof geotextile 3 and a permeable geotextile 4, and the thickness of the geotextile layer is 0.5 cm; the impermeable geotextile 3 is arranged between the sand cushion layer 2 at the upper part and the roadbed, a hole with the diameter of 10cm is arranged at the position corresponding to the permeable filter element 5, and the hole is connected with the PVC pipe by building glue; the permeable geotextile 3 is arranged on the upper part of the impermeable geotextile 4; the water permeable filter element 5 is divided into an upper part and a lower part, the height of the upper water permeable filter element is 200cm, the height of the lower water permeable filter element is 300cm, and the filter elements are arranged below the water permeable asphalt 1 at intervals of 50 cm; the PVC pipe is arranged outside the upper water-permeable filter element 5.
As shown in fig. 2, the permeable asphalt 1 is arranged at two sides of a road, and the concrete surface 7 of the surface is flush; two sides of the waterproof geotextile 4 are tightly attached to two sides of the permeable asphalt 1, and the height of the permeable asphalt 1 is half of the thickness of the permeable asphalt 1; the water permeable filter element 5 is prepared from coarse aggregate, cement, water, silicon powder, a water reducing agent, a tackifier and steel fiber according to the proportion of 1176: 323.4: 90.6: 12.9: 32.3: 3.2: 2.6, the surface of the asphalt is provided with a large number of water seepage holes which are arranged at the lower part of the center of the permeable asphalt 1 at the two sides.
As shown in fig. 3, the permeable asphalt 1 is disposed on both sides of the road and has a width of 30 cm.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the present invention are included in the scope of the present invention.
Claims (5)
1. An expanded land area sponge urban road based on miniature seepage wells comprises: road surface structure, roadbed structure and a plurality of filter core that permeates water, the filter core that permeates water distributes in roadbed structure and its upper portion outside is equipped with PVC pipe, characterized by: the middle part of the pavement structure is a concrete pavement, and the two sides of the pavement structure are permeable asphalt layers which are connected with the middle concrete pavement in a strip shape; and a sand cushion layer, a permeable geotextile layer and a waterproof geotextile layer are sequentially arranged between the permeable asphalt layer and the roadbed.
2. The expanded land area sponge urban road based on the micro seepage well as the method comprises the following steps: the upper part that the filter core that permeates water is connected with impervious geotechnological cloth is equipped with the PVC pipe, is equipped with the sand cushion layer between the lower part and the road bed contact.
3. The expanded land area sponge urban road based on the micro seepage well as defined in claim 1 or 2, characterized in that: the interval between the water permeable filter elements is more than or equal to 50 cm.
4. The expanded land area sponge urban road based on the micro seepage well as defined in claim 1 or 2, characterized in that: the ratio of the thickness of the pervious asphalt to the depth of the pervious filter element is 3: 50.
5. the expanded land area sponge urban road based on the micro seepage well as defined in claim 1 or 2, characterized in that: the waterproof geotextile is provided with a through hole connected with the PVC pipe, and the outer wall of the PVC pipe is sealed by industrial glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082345.8A CN112359658A (en) | 2020-10-12 | 2020-10-12 | Expanded land area sponge urban road based on miniature seepage well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082345.8A CN112359658A (en) | 2020-10-12 | 2020-10-12 | Expanded land area sponge urban road based on miniature seepage well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112359658A true CN112359658A (en) | 2021-02-12 |
Family
ID=74506638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011082345.8A Pending CN112359658A (en) | 2020-10-12 | 2020-10-12 | Expanded land area sponge urban road based on miniature seepage well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112359658A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775353A (en) * | 2022-01-12 | 2022-07-22 | 中国市政工程中南设计研究总院有限公司 | Environment-friendly roadbed treatment method based on sponge city |
-
2020
- 2020-10-12 CN CN202011082345.8A patent/CN112359658A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775353A (en) * | 2022-01-12 | 2022-07-22 | 中国市政工程中南设计研究总院有限公司 | Environment-friendly roadbed treatment method based on sponge city |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210212 |