CN214089273U - Bottom is permeated water and is endured roadbed structure that soaks - Google Patents
Bottom is permeated water and is endured roadbed structure that soaks Download PDFInfo
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- CN214089273U CN214089273U CN202022555783.3U CN202022555783U CN214089273U CN 214089273 U CN214089273 U CN 214089273U CN 202022555783 U CN202022555783 U CN 202022555783U CN 214089273 U CN214089273 U CN 214089273U
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Abstract
The utility model belongs to the technical field of highway engineering, a bottom permeable soaking-resistant roadbed structure is disclosed, wherein N layers of gravel permeable roadbed layers and permeable concrete side slope protective layers are arranged between a foundation and a common roadbed layer, and the permeable concrete side slope protective layers are arranged outside the side slopes of the N layers of gravel permeable roadbed layers; the wire netting is arranged below each gravel permeable roadbed layer, after the gravel permeable roadbed layers are formed by rolling, the wire netting arranged below each gravel permeable roadbed layer is bent to wrap the gravel permeable roadbed layer, and the wire netting is fixed on the gravel permeable roadbed layers through a plurality of fixing parts. The utility model can not only make the bottom of the roadbed have the function of soaking resistance, but also can meet the requirement of flood crossing the roadbed for water permeation; the gravel permeable road base layer is high in stability, and the permeable concrete side slope protective layer can protect the side slope of the roadbed from being washed away by flood and can facilitate the passage of flood.
Description
Technical Field
The utility model belongs to the technical field of highway engineering, specific theory relates to a roadbed structure.
Background
In recent years, the road construction business of China is developed rapidly, and the current mileage of traffic is the first in the world. The reasonable road network layout of the high-grade road is very important for forming and perfecting a road transportation network system, and a plurality of high-grade roads have to be built in a stagnant flood area due to the requirements of local economic development and planning layout. Not only can the flood erode the side slope of the highway subgrade, but also the filling materials of the subgrade can be softened along with the immersion of the flood, and further the bearing capacity and the stability of the subgrade are reduced. Therefore, a great deal of water damage problems occur to the highway subgrade in the impounded flood area every year, and the highway damage caused by water damage is treated by spending huge maintenance and repair funds every year. In addition, highway subgrades within stagnant flood zones are likely to be subjected to prolonged immersion by floods, and floods have a drainage need through the subgrade. It is seen that flood protection of highway foundations is very important.
At present, flood protection for a highway subgrade mainly prevents scouring of flood and permeation to the interior of the subgrade in a mode of paving a rubble slope, so that the problem that the bearing capacity of the subgrade is reduced due to permeation of the flood into the subgrade is difficult to avoid, and the problem that the flood needs to cross the highway subgrade cannot be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that hold highway subgrade need permeate water and resistant soaking within the stagnant flood district, provide a bottom permeate water resistant roadbed structure that soaks.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a bottom permeable soaking-resistant roadbed structure is characterized in that N layers of gravel permeable roadbed layers and permeable concrete side slope protection layers are arranged between a foundation and a common roadbed layer, the permeable concrete side slope protection layers are arranged on the outer sides of the side slopes of the N layers of gravel permeable roadbed layers, wherein N is a positive integer;
an iron wire net is arranged below each layer of gravel permeable roadbed layer, and two sides of the iron wire net are wider than the gravel permeable roadbed layer arranged on the iron wire net; after each layer of gravel permeable roadbed layer is rolled and formed, the wider part of the iron wire net arranged below the gravel permeable roadbed layer is bent back to wrap the gravel permeable roadbed layer, and the wire net is fixed on the gravel permeable roadbed layer through a plurality of fixing parts.
Further, the filling height of the N layers of gravel permeable road base layers at least exceeds the designed flood level by 0.5 m.
Further, the porosity of the gravel permeable road base layer is 16% -21%.
Further, the gravel maximum grain diameter of the gravel permeable road base layer is not more than 15 cm.
Further, the single-layer paving thickness H of the gravel permeable roadbed layer is 15-30 cm and is not less than 1.5 times of the maximum particle size of gravel.
Furthermore, two sides of the iron wire net are respectively wider than the gravel permeable road base layer arranged on the iron wire net by at least 2-3 meters.
Further, the mesh size of the wire netting ranges from 3cm × 3cm to 5cm × 5 cm.
Further, the distance between two adjacent fixing parts is 30-50 cm.
Further, the fixing part is a U-shaped rivet.
Further, the thickness of the pervious concrete side slope protective layer is 0.3-0.5 m.
The utility model has the advantages that:
(one) the utility model discloses a bottom is permeated water and is endured and soak roadbed structure through the N layer gravel road bed that permeates water of making between ground and ordinary road bed layer, can enough make the roadbed bottom have and endure to soak the function, can satisfy again that flood crosses the needs of permeating water of road bed.
(two) the utility model discloses a bottom is permeated water and is endured and soak roadbed structure wraps up the gravel road bed that permeates water through the wire netting successive layer to cooperation fixed part is fixed, has ensured the stability of gravel road bed that permeates water, reduces the not hard up possibility of landing of the individual gravel of side slope department.
(III) the utility model discloses a bottom is permeated water and is endured and soak roadbed structure sets up the concrete side slope inoxidizing coating that permeates water through the side slope outside at N layer gravel road bed layer that permeates water, can protect the road bed side slope to avoid washing away of flood, also can make things convenient for the flood to cross the highway subgrade through the road bed that permeates water.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is according to the utility model discloses the structure schematic diagram of the resistant roadbed structure that soaks of permeating water in bottom.
In the above figures: 1. a foundation; 2. a wire mesh; 3. a gravel permeable roadbed layer; 4. a U-shaped rivet; 5. a pervious concrete side slope protective layer; 6. a common roadbed layer; 7. a pavement structure; 8. an earth shoulder.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a bottom is permeated water and is endured and soak roadbed structure is provided in this embodiment, figure 1 is according to the utility model discloses a bottom is permeated water and is endured and soak roadbed structure's structural schematic diagram, as shown in figure 1, this bottom is permeated water and is endured and soak roadbed structure includes ground 1, wire netting 2, gravel road bed layer 3 that permeates water, concrete side slope inoxidizing coating 5 and ordinary road bed layer 6.
The gravel permeable road base layer 3 is provided with N layers, wherein N is a positive integer greater than or equal to 1.
A first layer of wire netting 2 is laid on the foundation 1, and a first layer of gravel permeable roadbed 3 is filled on the first layer of wire netting 2; after the gravel permeable roadbed 3 of the first layer is formed by rolling, the wire netting 2 of the first layer is bent back to wrap the gravel permeable roadbed 3 of the first layer, and the wire netting 2 of the first layer is anchored by a plurality of U-shaped rivets 4 at the bent back position.
The gravel permeable roadbed 3 upper berth of first layer is equipped with the gravel permeable roadbed 3 of next floor 2 and next floor, and the mode of laying is that gravel permeable roadbed 3 of this floor is rolled into the back, and the gravel permeable roadbed 3 of this floor is wrapped up in the bending of wire netting 2 that its lower was set up to the bending part of wire netting 2 is through the gravel permeable roadbed 3 of a plurality of U type rivets 4 anchor in this floor.
By analogy, laying the wire netting 2 and filling the gravel permeable roadbed layer 3 layer by layer until the filling height exceeds the designed flood level by 0.5 m, and arranging a permeable concrete side slope protection layer 5 outside the side slope of the N-layer gravel permeable roadbed layer 3.
The thickness of the pervious concrete side slope protective layer 5 is usually within the range of 0.3-0.5 m, so that the engineering economy is kept while the road base side slope is protected from being damaged by scouring.
And paving a common roadbed layer 6 on the top surface of the last gravel permeable roadbed layer 3 and the permeable concrete side slope protective layer 5 according to a conventional method until the designed elevation of the roadbed. The ordinary roadbed 6 is constructed by adopting ordinary roadbed filling materials according to a conventional method.
And a common road base layer 6 is used for paving a road surface structure 7 and a road shoulder 8. The utility model discloses well mentioned fill, lay, anchor, pavement and vibrations roll all belong to prior art.
The gravel permeable roadbed 3 of each layer is formed by selecting gravels with different grain diameters, paving the gravels after grading design, and the porosity of the gravel permeable roadbed 3 after rolling and forming is preferably controlled between 16 percent and 21 percent so as to meet the water permeability requirement of flood crossing the roadbed.
As a preferred embodiment, the maximum gravel particle size of the gravel permeable roadbed 3 is not more than 15cm, the construction rolling effect is better, and the compactness of the gravel permeable roadbed 3 can be ensured.
In a preferred embodiment, the single-layer pavement thickness H of the gravel permeable roadbed 3 is 15-30 cm and is not less than 1.5 times of the maximum particle size of gravel; the single-layer paving thickness can ensure the compactness of the gravel permeable roadbed 3 under the condition of rolling by common construction machinery.
The two sides of the wire netting 2 arranged below the gravel permeable roadbed 3 of each layer need to be wider than the gravel permeable roadbed 3 of the layer, and the width of the wire netting 2 preferably exceeds the two sides of the gravel permeable roadbed 3 above the wire netting by at least 2-3 meters respectively.
In a preferred embodiment, the mesh size of the wire 2 is in the range of 3cm × 3cm to 5cm × 5cm, so that the wire 2 can be wrapped around the gravel permeable layer 3 well and prevent the small-diameter gravel from being squeezed out through the gaps of the wire 2.
As a preferable embodiment, the distance between two adjacent U-shaped rivets 4 is set to be 50 cm-120 cm, so that the gravel particles in the gravel permeable road base layer 2 are embedded and squeezed.
In addition, in addition to the U-shaped rivet 4, other fixing members may be used to anchor the bent back portion of the wire netting 2 to the gravel permeable roadbed 3 as long as the wire netting and the gravel layer can be fixed to each other.
The construction process of the permeable and soaking-resistant roadbed structure at the bottom can be carried out according to the following steps:
(1) firstly, cleaning a construction site, leveling a foundation 1, and reinforcing the foundation 1 to ensure that the bearing capacity of the foundation 1 meets the design requirement for the road section of which the bearing capacity cannot meet the design requirement;
(2) a first layer of wire netting 2 on the foundation 1;
(3) filling a first gravel permeable roadbed 3 on the first layer of the wire mesh 2, wherein the single-layer paving thickness H of the gravel permeable roadbed 3 is comprehensively determined according to the maximum particle size of gravel and the efficiency of a rolling machine;
(4) rolling and forming the gravel permeable roadbed 3 of the first layer;
(5) the wire netting 2 arranged below the first gravel permeable roadbed 3 is bent back to wrap the gravel permeable roadbed 3, and the bent part of the wire netting 2 is anchored by a plurality of U-shaped rivets 4;
(6) and laying the iron wire net 2 of the second layer and the gravel permeable roadbed 3 of the second layer on the formed and wrapped gravel permeable roadbed 3, and rolling and forming. And then, construction layer by layer is performed in sequence until the elevation of the gravel permeable roadbed 3 reaches the designed flood level plus 0.5 m or more;
(7) pouring a permeable concrete slope protection layer 5 with a designed thickness on the outer side of the gravel permeable roadbed 3 after the rolling forming;
(8) and paving a common roadbed layer 6 on the top surface of the last gravel permeable roadbed layer 3 and the permeable concrete side slope protection layer 5 according to a conventional method until the designed elevation of the roadbed.
After the roadbed construction is finished, a pavement structure 7 and a soil shoulder 8 can be built, and other work can be further finished.
The utility model discloses a bottom is permeated water and is resisted and soak roadbed structure and work progress is explained further with a specific application condition below, and this road bed includes three-layer gravel road bed layer 3 that permeates water, and every layer thickness H is 0.25 meters.
Laying a first layer of wire netting 2 on the foundation 1, and enabling the width of the first layer of wire netting to exceed the two sides of the first layer of gravel permeable roadbed 3 respectively by 2.45 meters (1.8H + 2); fill gravel road bed layer 3 that permeates water of first layer on the wire netting 2 of first layer, the gravel road bed layer 3 that permeates water of first layer is through rolling the shaping back, returns the bent parcel of wire netting 2 that sets up below and live first layer gravel road bed layer 3 that permeates water to return bend with 5U type rivets 4 anchor at wire netting 1, wherein 1U type rivet 4 is used for the side of the side slope, 4U type rivets 3 are used for above this gravel road bed layer 3 that permeates water. Paving a second layer of wire netting 2 on the first layer of the formed gravel permeable roadbed 3, and paving a second layer of gravel permeable roadbed 3 on the second layer of the wire netting 2; after the gravel permeable roadbed 3 of second floor rolls the shaping, returns the second floor's 2 iron wire nets that bend parcel that set up below it and live second floor gravel permeable roadbed 3 to return the bend at iron wire nets 2 and use 5U type rivets 4 anchor, wherein 1U type rivet 4 is used for the side slope side, 4U type rivets 4 are used for above this gravel permeable roadbed 3. Laying a third layer of wire netting 2 on the second layer of the formed gravel permeable roadbed 3, and laying a third layer of gravel permeable roadbed 3 on the third layer of wire netting; after the gravel permeable roadbed 3 of the third layer is rolled and formed, the third layer wire netting 2 arranged below the third layer wire netting is bent back to wrap the gravel permeable roadbed 3 of the third layer, and 5U-shaped rivets 4 are anchored at the bent part of the wire netting 2, wherein 1U-shaped rivet 4 is used for the side face of the side slope, and 4U-shaped rivets 4 are used for the gravel permeable roadbed 3.
And after the gravel permeable roadbed 3 is completely filled and rolled, a 30 cm-thick permeable concrete side slope protection layer 5 is poured on the outer side of the gravel permeable roadbed.
And paving a common roadbed layer 6 on the top surface of the third (last) gravel permeable roadbed layer 3 and the permeable concrete side slope protection layer 5 according to a conventional method until the designed elevation of the roadbed.
After the roadbed structure is constructed, the pavement structure 7 and the soil shoulder 8 can be further constructed.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various changes without departing from the spirit and the scope of the invention as claimed.
Claims (10)
1. A roadbed structure with a permeable and soaking-resistant bottom is characterized in that N gravel permeable roadbed layers and a permeable concrete side slope protection layer are arranged between a foundation and a common roadbed layer, the permeable concrete side slope protection layer is arranged on the outer side of a side slope of the N gravel permeable roadbed layers, wherein N is a positive integer;
an iron wire net is arranged below each layer of gravel permeable roadbed layer, and two sides of the iron wire net are wider than the gravel permeable roadbed layer arranged on the iron wire net; after each layer of gravel permeable roadbed layer is rolled and formed, the wider part of the iron wire net arranged below the gravel permeable roadbed layer is bent back to wrap the gravel permeable roadbed layer, and the wire net is fixed on the gravel permeable roadbed layer through a plurality of fixing parts.
2. The permeable and soaking-resistant roadbed structure of claim 1, wherein the filling height of the N layers of gravel permeable roadbed layers exceeds the design flood level by at least 0.5 m.
3. The bottom water-permeable soaking-resistant roadbed structure according to claim 1, wherein the gravel water-permeable roadbed layer has a porosity of 16-21%.
4. The bottom water-permeable soaking-resistant roadbed structure of claim 1, wherein the gravel maximum grain size of the gravel water-permeable roadbed layer is not more than 15 cm.
5. The foundation structure of claim 1, wherein the gravel permeable roadbed has a single-layer pavement thickness H of 15-30 cm and not less than 1.5 times of the maximum particle size of the gravel.
6. The permeable and soaking-resistant roadbed structure of claim 1, wherein two sides of the wire netting are wider than the gravel permeable roadbed layer arranged on the wire netting by at least 2-3 m.
7. The permeable and soaking-resistant roadbed structure of the bottom, according to claim 1, wherein the mesh size of the wire netting ranges from 3cm x 3cm to 5cm x 5 cm.
8. The foundation permeable and soak-resistant roadbed structure of claim 1, wherein the distance between two adjacent fixing parts is 30 cm-50 cm.
9. The permeable and soaking-resistant roadbed structure of claim 1, wherein the fixing parts are U-shaped rivets.
10. The permeable and soaking-resistant roadbed structure at the bottom part of claim 1, wherein the thickness of the permeable concrete slope protective layer is 0.3-0.5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022555783.3U CN214089273U (en) | 2020-11-06 | 2020-11-06 | Bottom is permeated water and is endured roadbed structure that soaks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022555783.3U CN214089273U (en) | 2020-11-06 | 2020-11-06 | Bottom is permeated water and is endured roadbed structure that soaks |
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| CN214089273U true CN214089273U (en) | 2021-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211055A (en) * | 2020-11-06 | 2021-01-12 | 天津市市政工程设计研究院 | Bottom is permeated water and is endured roadbed structure that soaks |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211055A (en) * | 2020-11-06 | 2021-01-12 | 天津市市政工程设计研究院 | Bottom is permeated water and is endured roadbed structure that soaks |
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| CP01 | Change in the name or title of a patent holder |
Address after: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee after: Tianjin municipal engineering design and Research Institute Co.,Ltd. Patentee after: CCCC FIRST HIGHWAY ENGINEERING GROUP Co.,Ltd. Patentee after: Hebei University of Technology Address before: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee before: TIANJIN MUNICIPAL ENGINEERING DESIGN & Research Institute Patentee before: CCCC FIRST HIGHWAY ENGINEERING GROUP Co.,Ltd. Patentee before: Hebei University of Technology |
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| CP01 | Change in the name or title of a patent holder |