CN214401237U - Town road subgrade structure based on graded broken stones - Google Patents
Town road subgrade structure based on graded broken stones Download PDFInfo
- Publication number
- CN214401237U CN214401237U CN202023117935.8U CN202023117935U CN214401237U CN 214401237 U CN214401237 U CN 214401237U CN 202023117935 U CN202023117935 U CN 202023117935U CN 214401237 U CN214401237 U CN 214401237U
- Authority
- CN
- China
- Prior art keywords
- layer
- graded
- drainage
- graded broken
- broken stone
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a town road roadbed structure based on graded broken stone belongs to roadbed structure technical field, during roadbed structure's among the solution prior art table water still permeates roadbed structure easily, lead to the emergence scheduling problem of diseases such as frost heaving, mud pumping. The utility model comprises a roadbed base layer, a graded broken stone drainage layer, a steel structure layer, a concrete layer and a first asphalt graded broken stone layer from bottom to top in sequence; the reinforced drainage bag comprises an anti-corrosion non-woven bag, a first drainage pipe arranged in the anti-corrosion non-woven bag, and a graded broken stone interlayer arranged between the first drainage pipe and the anti-corrosion non-woven bag; the graded broken stone drainage layer comprises a lower graded broken stone layer, an upper graded broken stone layer and a second drainage pipe arranged between the lower graded broken stone layer and the upper graded broken stone layer, and the first drainage pipe is communicated with the second drainage pipe. The utility model is used for town road.
Description
Technical Field
A town road subgrade structure based on graded broken stones is used for town roads and belongs to the technical field of subgrade structures.
Background
The graded broken stone is a mixture composed of aggregates with different size fractions, and when the grading meets the specification of the technical specification, the graded broken stone is called as a graded aggregate. The graded aggregate comprises graded broken stone, graded broken gravel (a mixture of broken stone and gravel, and often super-sized particles in the gravel are broken down and then combined with the gravel to form broken gravel) and graded gravel (or graded gravel).
The main application of graded broken stones is as follows:
the graded aggregate can be used as a base layer and a subbase layer of an asphalt pavement and a cement concrete pavement, and can also be used as a roadbed structure improvement layer. On the premise of good drainage, the graded aggregate can be used for roads with different traffic grades in different climatic zones. The use of sized aggregates is particularly advantageous in wet and rainy regions.
Generally, there are three cases of using graded aggregates in pavement structures:
firstly, the asphalt is used as a pavement or under a thin asphalt surface layer on a light traffic road;
secondly, the asphalt is used under a thick asphalt surface layer on a heavy traffic road. In this case, there may be two forms, one is the graded crushed stone of high quality with good construction quality, which is directly used under the thick asphalt surface layer as the base layer, the other is graded aggregate with inferior construction quality used in deeper position, which is usually used under the base layer with binder;
the graded broken stone is often used as an intermediate layer between an asphalt surface and a hydraulic binder treatment base layer by many countries, so that the drying shrinkage cracks reflected from the hydraulic binder treatment layer to the asphalt surface layer are reduced, namely, the reflection cracks are reduced, water in a pavement structure layer is favorably discharged, and the flushing phenomenon of the base layer is reduced or even eliminated. Such a pavement structure is also commonly referred to as an "inverted structure".
On the heavy traffic road, for example on the expressway in the near tunnel, on the town road, its axle load is heavier, the roadbed structure that the aim at axle load is heavier in the prior art plays waterproof effect to roadbed structure surface through adding pitch level and join in marriage the rubble layer in the roadbed structure to strengthen roadbed structure, although the roadbed structure's that adopts this kind of mode to obtain load-carrying capacity is better, and can prevent in the surface water infiltration roadbed structure, thereby can reduce the emergence probability of diseases such as frost heaving, mud pumping, still have following problem:
1. although the asphalt graded broken stone layer is laid on the surface layer of the roadbed structure, the thickness of the laid asphalt graded broken stone layer is thinner under most conditions, once the asphalt graded broken stone layer cracks and meets the condition of more precipitation, surface water is easy to permeate into the roadbed structure under the condition that the roadbed structure is not repaired in time and the drainage effect of a drainage layer of the roadbed structure is poor, so that the defects of frost heaving, slurry turning, mud pumping and the like are caused, the steel structure is corroded, and the load capacity of the roadbed structure is influenced;
2. the existing roadbed structure has poor water permeability, and when the precipitation is large, the surface water drainage speed is slow.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a town road roadbed structure based on graded broken stone, the table water of the roadbed structure among the solution prior art still permeates roadbed structure easily, leads to the emergence of diseases such as frost heaving, mud pumping to and can cause the steel construction to be corroded, thereby influences roadbed structure's load capacity scheduling problem.
In order to realize the purpose, the utility model discloses a technical scheme be:
a graded broken stone-based urban road subgrade structure sequentially comprises a subgrade base layer, a graded broken stone drainage layer, a steel structure layer, a concrete layer and a first asphalt graded broken stone layer from bottom to top;
the reinforced drainage bag comprises an anti-corrosion non-woven bag, a first drainage pipe arranged in the anti-corrosion non-woven bag, and a graded broken stone interlayer arranged between the first drainage pipe and the anti-corrosion non-woven bag;
the graded broken stone drainage layer comprises a lower graded broken stone layer, an upper graded broken stone layer and a second drainage pipe arranged between the lower graded broken stone layer and the upper graded broken stone layer, and the first drainage pipe is communicated with the second drainage pipe.
Further, a second asphalt graded gravel layer is arranged between the graded gravel drainage layer and the steel structure layer.
Furthermore, a waterproof film is arranged between the graded broken stone drainage layer and the second asphalt graded broken stone layer.
Further, the concrete layer includes the first concrete layer that permeates water and the waterproof concrete interval sets up, sets up the pervious concrete layer on first concrete layer to and the drain pipe that is connected with the pervious concrete layer in the first concrete layer.
Further, the steel structure layer includes a plurality of groove type steel structures.
Further, a waterproof layer is arranged between the steel structure layer and the concrete layer.
Further, a drainage pump is arranged on the second drainage pipe.
Further, the lower-layer graded broken stone layer, the upper-layer graded broken stone layer, the first asphalt graded broken stone layer, the second asphalt graded broken stone layer and the graded broken stone interlayer are formed by crushing and screening kaishan stone, natural pebbles or sand gravels, the grain grading nonuniform coefficient Cu is more than or equal to 15, the mass percentage of grains with the grain size of less than 0.02mm is less than or equal to 3%, and the mass percentage of grains with crushing surfaces in coarse grains with the grain size of more than 22.4mm is more than or equal to 30%.
Compared with the prior art, the utility model has the advantages of:
firstly, the reinforced drainage bag is arranged in the roadbed base layer, and the first drainage pipe in the reinforced drainage bag is connected with the second drainage pipe, so that the redundant water in the roadbed base layer can be quickly drained; secondly, the roadbed can be enhanced to increase the load; thirdly, if surface water of the roadbed structure permeates into the roadbed base layer, the reinforced drainage bag is arranged, so that water absorption can be reduced, and meanwhile, the excessive water absorbed can be quickly drained through the first drainage pipe, so that the occurrence of diseases such as frost heaving, slurry turning, mud pumping and the like is greatly reduced;
secondly, the utility model discloses set up the second pitch gradation metalling between gradation rubble drainage blanket and steel construction layer, when the purpose is in order to prevent that the first pitch gradation metalling of top layer from appearing the crack, surface water gets into the roadbed basic unit, not only in order to play the effect of preventing surface water from continuing to permeate through setting up the second pitch gradation metalling, can also further play the reinforcing effect to the roadbed;
thirdly, the waterproof film is arranged between the graded broken stone drainage layer and the second asphalt graded broken stone layer, so that when the second asphalt graded broken stone layer is laid, liquid enters the graded broken stone drainage layer to cause the solidification of the graded broken stone drainage layer and the difficulty in drainage;
fourthly, the utility model adopts the concrete layer setting mode, and aims to prevent the first asphalt graded crushed stone layer of the surface layer from cracking, the concrete layer can quickly drain rainwater entering the roadbed, prevent the rainwater from entering the roadbed base layer, and can help the surface layer to quickly drain water under the condition of large rainfall;
fifthly, the steel structure layer of the utility model comprises a plurality of groove-shaped steel structures, and aims to strengthen the load of the roadbed;
sixth, the utility model discloses between steel structural layer and the concrete layer is provided with the waterproof layer, its purpose is when preventing the road bed from cracking, rainwater plays the corrosive action to the steel construction;
seventhly, the utility model discloses well second drain pipe is connected with the drain pump, and its purpose is in order to prevent that when carrying out the drainage through runoff can not be fine, and the accessible drain pump carries out the helping hand, realizes quick drainage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.
Fig. 1 is a side schematic view of the present invention;
fig. 2 is a sectional view of a roadbed base layer according to the present invention;
FIG. 3 is a cross-sectional view of the medium grade crushed stone drainage layer of the present invention;
fig. 4 is a cross-sectional view of a steel structure layer according to the present invention.
In the figure: the concrete drainage system comprises a roadbed base layer 1, a 2-graded broken stone drainage layer, a 3-steel structure layer, a 4-concrete layer, a 5-first asphalt graded broken stone layer, a 6-reinforced drainage bag, a 7-anticorrosive non-woven bag, an 8-first drainage pipe, a 9-graded broken stone interlayer, a 10-lower graded broken stone layer, an 11-upper graded broken stone layer, a 12-second drainage pipe, a 13-second asphalt graded broken stone layer, a 14-waterproof film, a 15-first concrete layer, a 16-pervious concrete layer, a 17-drainage pipe, an 18-waterproof layer and a 19-drainage pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Example 1
As shown in fig. 1, the town road subgrade structure based on graded broken stones sequentially comprises a subgrade base layer 1, a graded broken stone drainage layer 2, a steel structure layer 3, a concrete layer 4 and a first asphalt graded broken stone layer 5 from bottom to top;
as shown in fig. 2, a reinforcing drainage bag 6 for reinforcing the roadbed and draining water is arranged in the roadbed 1, wherein the reinforcing drainage bag 6 comprises an anticorrosion non-woven bag 7, a first drainage pipe 8 arranged in the anticorrosion non-woven bag 7, and a graded broken stone interlayer 9 arranged between the first drainage pipe 8 and the anticorrosion non-woven bag 7; wherein, anticorrosive non-woven bag 7's setting is in order to filter out the moisture in the road bed basic unit under the squeezing action of gradation rubble intermediate layer 9 to block through gradation rubble intermediate layer 9 and subside the fine silt, collect the moisture in a large amount of earth fast. The water inlet of the first drainage pipe 8 can be provided with a filter screen to prevent soil from blocking the first drainage pipe.
As shown in fig. 3, the graded crushed stone water draining layer 2 comprises a lower graded crushed stone layer 10, an upper graded crushed stone layer 11, and a second water draining pipe 12 arranged between the lower graded crushed stone layer 10 and the upper graded crushed stone layer 11, wherein the first water draining pipe 8 is communicated with the second water draining pipe 12. The upper-level graded broken stone layer 11 is thicker than the lower-level graded broken stone layer 10 and is 2cm-5cm thick.
In practice, a reinforcing drainage bag 6 needs to be arranged in a roadbed 1, and then a graded broken stone drainage layer 2, a steel structure layer 3, a concrete layer 4 and a first asphalt graded broken stone layer 5 are sequentially arranged on the roadbed 1 to obtain the town road roadbed structure based on graded broken stones, wherein the steel structure layer 3, the concrete layer 4 and the first asphalt graded broken stone layer are arranged on the roadbed 1 when the water content in the roadbed 1 meets the requirement. The obtained urban road subgrade structure in the embodiment can quickly discharge redundant water in the subgrade base layer; the reinforcing effect can be achieved on the roadbed so as to increase the load; if roadbed structure's surface water infiltration roadbed base, owing to be provided with reinforcing drainage bag, the water absorption of reducible moisture, the unnecessary moisture that will absorb water through first drain pipe that simultaneously can be quick is discharged, greatly reduced frost heaving, the emergence of diseases such as thick liquid rising mud.
Example 2
As shown in fig. 1, on the basis of embodiment 1, a second asphalt graded crushed stone layer 13 is arranged between the graded crushed stone drainage layer 2 and the steel structure layer 3, the purpose is to prevent surface water from entering the roadbed base layer when the first asphalt graded crushed stone layer of the surface layer cracks, and the second asphalt graded crushed stone layer is arranged to not only prevent surface water from continuously permeating, but also further strengthen the roadbed.
Example 3
As shown in fig. 1, on the basis of example 2, a waterproof film 14 is arranged between the graded crushed stone drainage layer 2 and the second asphalt graded crushed stone layer 13; its purpose is in order to prevent to lay when second pitch gradation rubble layer, and liquid gets into gradation rubble drainage blanket, causes gradation rubble drainage blanket to solidify, difficult drainage scheduling problem.
Example 4
As shown in fig. 3, in any of the embodiments 1 to 3, the concrete layer 4 includes a first concrete layer 15 in which water permeable and impermeable concrete is arranged at intervals, a water permeable concrete layer 16 arranged on the first concrete layer 15, and a drain pipe 17 connected to the water permeable concrete layer 16 in the first concrete layer 15. Wherein the first concrete layer 15 is thicker than the pervious concrete layer 16, and the thickness of the pervious concrete layer 16 is 5-8 cm. Concrete layer 4 is not only for the load, and its purpose still when the crack appears in the first pitch gradation metalling in order to prevent the top layer, and concrete layer can be quick drains away the rainwater that gets into in the road bed, prevents that the rainwater from getting into the road bed basic unit to under the great condition of rainfall, can also help the top layer to carry out quick drainage.
The permeable and impermeable concrete are arranged at intervals of 3m-5m, and other setting modes of the interval distance are not excluded.
Example 5
As shown in fig. 1, based on embodiment 4, the steel structure layer 3 includes a plurality of groove-type steel structures. The steel structure layer includes a plurality of recess shaped steel structures, be provided with waterproof layer 18 between steel structure layer 3 and the concrete layer 4, when its purpose is in order to prevent that the road bed from appearing the crack, the rainwater plays the corrosive action to the steel structure.
Example 6
As shown in fig. 3, in addition to embodiment 5, the second drainage pipe 12 is provided with a drainage pump 19, which is used for assisting the drainage by the drainage pump to realize quick drainage when drainage by runoff is not good.
Example 7
In example 6, the lower graded gravel layer 10, the upper graded gravel layer 11, the first asphalt graded gravel layer 5, the second asphalt graded gravel layer 13, and the graded gravel interlayer 9 were formed by crushing and screening kaisha stone, natural pebble, or sand gravel, and the grain grading unevenness coefficient Cu was 15 or more, the mass percentage of grains having a grain size of 0.02mm or less was 3% or less, and the mass percentage of grains having a crushed surface in coarse grains having a grain size of 22.4mm or more was 30% or more.
Claims (7)
1. The utility model provides a town road roadbed structure based on graded rubble which characterized in that: the asphalt graded gravel drainage layer sequentially comprises a roadbed base layer (1), a graded gravel drainage layer (2), a steel structure layer (3), a concrete layer (4) and a first asphalt graded gravel layer (5) from bottom to top;
the reinforced drainage bag (6) is arranged in the roadbed base layer (1) and used for reinforcing the roadbed base layer and draining water, and the reinforced drainage bag (6) comprises an anti-corrosion non-woven bag (7), a first drainage pipe (8) arranged in the anti-corrosion non-woven bag (7), and a graded broken stone interlayer (9) arranged between the first drainage pipe (8) and the anti-corrosion non-woven bag (7);
graded rubble drainage blanket (2) are joined in marriage rubble layer (10), upper strata level and are joined in marriage rubble layer (11), set up second drain pipe (12) between lower floor graded rubble layer (10) and upper strata level and join in marriage rubble layer (11), first drain pipe (8) and second drain pipe (12) are linked together.
2. A graded crushed stone-based town road subgrade structure according to claim 1, characterized in that: and a second asphalt graded gravel layer (13) is arranged between the graded gravel drainage layer (2) and the steel structure layer (3).
3. A graded crushed stone-based town road subgrade structure according to claim 2, characterized in that: and a waterproof film (14) is arranged between the graded broken stone drainage layer (2) and the second asphalt graded broken stone layer (13).
4. A graded crushed stone based town road subgrade structure according to any one of claims 1-3, characterized in that: the concrete layer (4) comprises a first concrete layer (15) which is permeable and impermeable to water and is arranged at intervals, a permeable concrete layer (16) arranged on the first concrete layer (15), and a drain pipe (17) connected with the permeable concrete layer (16) in the first concrete layer (15).
5. A graded crushed stone-based town road subgrade structure according to claim 4, characterized in that: the steel structure layer (3) comprises a plurality of groove-shaped steel structures.
6. A graded crushed stone-based town road subgrade structure according to claim 5, characterized in that: and a waterproof layer (18) is arranged between the steel structure layer (3) and the concrete layer (4).
7. A graded crushed stone-based town road subgrade structure according to claim 1, characterized in that: and a drainage pump (19) is arranged on the second drainage pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023117935.8U CN214401237U (en) | 2020-12-22 | 2020-12-22 | Town road subgrade structure based on graded broken stones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023117935.8U CN214401237U (en) | 2020-12-22 | 2020-12-22 | Town road subgrade structure based on graded broken stones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214401237U true CN214401237U (en) | 2021-10-15 |
Family
ID=78039908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023117935.8U Active CN214401237U (en) | 2020-12-22 | 2020-12-22 | Town road subgrade structure based on graded broken stones |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214401237U (en) |
-
2020
- 2020-12-22 CN CN202023117935.8U patent/CN214401237U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20130045049A1 (en) | Permeable traffic bearing structure | |
| ZA200304637B (en) | A reinforced permeable structure. | |
| CN106758675A (en) | Rainwater-collecting ecological pavement with drainage water purification kerbstone | |
| CN210262547U (en) | Wide structure is tied up to bituminous paving | |
| CN207362616U (en) | A kind of paving structure of water-permeable brick | |
| CN208266622U (en) | A kind of sponge non-watertight road edge stone and sponge urban road structural system | |
| CN107794822B (en) | Permeable pavement based on sponge city idea | |
| CN214401237U (en) | Town road subgrade structure based on graded broken stones | |
| CN105803888A (en) | Sponge type road paving structure | |
| CN214116117U (en) | Sponge city permeable pavement | |
| CN210916876U (en) | Urban road rebuilds people's way pavement structure of mating formation that permeates water of engineering | |
| CN211772518U (en) | Type of permeating water's road structure of going | |
| CN108411728A (en) | Surface drainage | |
| CN212641083U (en) | Large-gap drainage asphalt pavement structure | |
| CN209924091U (en) | Rectangular side ditch structure for reducing roadbed water level and discharging road surface | |
| CN210797146U (en) | A dispersion drainage structures for drainage bituminous paving | |
| CN113152628A (en) | V-shaped gully high-fill temporary drainage system and construction method thereof | |
| EP3480360B1 (en) | Road surface comprising one or more porous strips | |
| CN208455404U (en) | A kind of long-life Steel Bridge Deck draining paving structure layer | |
| CN208250846U (en) | Surface drainage | |
| CN206359859U (en) | A kind of pavement pavement structure | |
| CN217810292U (en) | Drainage, antiskid highway | |
| CN219886478U (en) | Double-deck drainage asphalt concrete pavement structure | |
| CN216615357U (en) | Town road prevention of seepage project organization | |
| CN221094725U (en) | Highway antiskid pavement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |