CN212641083U - Large-gap drainage asphalt pavement structure - Google Patents
Large-gap drainage asphalt pavement structure Download PDFInfo
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- CN212641083U CN212641083U CN202020287124.3U CN202020287124U CN212641083U CN 212641083 U CN212641083 U CN 212641083U CN 202020287124 U CN202020287124 U CN 202020287124U CN 212641083 U CN212641083 U CN 212641083U
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Abstract
The utility model relates to a highway engineering technical field discloses a big space drainage bituminous paving structure, include: from supreme lower layer, waterproof bonding layer and the drainage pitch layer of holding down that sets gradually down, wherein, the porosity on drainage pitch layer more than or equal to 25% and less than or equal to 30%. This big space drainage bituminous paving structure has that drainage ability is strong and drainage effect is good advantage.
Description
Technical Field
The utility model relates to a highway engineering technical field especially relates to a big space drainage bituminous paving structure.
Background
The existing traditional asphalt pavement in China is of an impermeable compact structure, rainwater can be collected to a low elevation position of the pavement only in a surface runoff mode and then is drained in a pavement centralized drainage mode or a pavement transverse dispersion overflowing drainage mode. The road surface centralized drainage is that a water blocking belt or a road shoulder side ditch is arranged on the road side, and road surface water is collected in a water passing section and then is discharged through a rapid trough or a water collecting well. The pavement is transversely dispersed and drained in a diffused mode, namely, the pavement shoulder is specially treated, so that rainwater can be transversely and freely drained.
From the beginning of the 21 st century, the department of transportation began to attach importance to the development of drainage asphalt pavement, began to research drainage asphalt pavement which accords with the national conditions of China, and different from the traditional asphalt pavement, the drainage asphalt pavement adopts large-gap asphalt concrete as a surface layer, and rainwater can penetrate into the drainage asphalt in rainy days and then is transversely removed along a cross slope of the pavement. Drainage bituminous paving carries out the drainage through the inside space in pitch layer to can satisfy rainy day drainage requirement, can not form the runoff on road surface, ensure the driving safety of road.
The drainage asphalt layer of the existing drainage asphalt pavement can meet the drainage requirements of most regions. However, on the road surface with high rainfall intensity and wide road width, the void ratio can not meet the requirement of drainage, and runoff can be formed on the road surface.
At present, the technical system of the drainage asphalt pavement in China is mature, the drainage asphalt pavement enters the application stage of large-scale rapid popularization, and new standard requirements are provided for the service quality of the drainage asphalt pavement. Especially for the rainy area in the south, rainfall capacity and rainfall intensity are more outstanding, if the rainwater can not be discharged from the roadside fast, behind surpassing drainage bituminous paving self water saturation capacity, easily form the surface course runoff, seriously influence driving safety. Therefore, the road surface drainage capacity of the existing drainage asphalt needs to be optimized and upgraded, the road surface can quickly drain water and quickly eliminate road surface water, and the high-quality service function of the drainage asphalt pavement is fully exerted.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims at providing a big space drainage bituminous paving structure to and the drainage bituminous paving who solves among the prior art has the drainage ability poor, under the condition that meets heavy rainfall on a large scale, easy on the road surface technical problem of ponding easily.
(II) technical scheme
In order to solve the technical problem, the utility model provides a big space drainage bituminous paving structure, include: from supreme lower layer, waterproof bonding layer and the drainage pitch layer of holding down that sets gradually down, wherein, the porosity on drainage pitch layer more than or equal to 25% and less than or equal to 30%.
Wherein, the drainage asphalt layer comprises epoxy asphalt, epoxy resin or modified polyurethane.
Wherein, the drainage asphalt layer comprises a thin-layer drainage asphalt pavement, a single-layer drainage asphalt pavement or a double-layer drainage asphalt pavement.
Wherein the thickness of the thin-layer drainage asphalt pavement is more than or equal to 1.5 cm and less than or equal to 3 cm; the thickness of the single-layer drainage asphalt pavement is more than or equal to 3 cm and less than or equal to 6 cm.
Wherein the thickness of the double-layer drainage asphalt pavement is more than or equal to 8 cm and less than or equal to 12 cm.
Wherein, the waterproof bonding layer comprises modified emulsified asphalt, modified hot asphalt or an asphalt synchronous chip seal.
The lower bearing layer sequentially comprises a modified asphalt concrete middle surface layer, a modified asphalt concrete lower surface layer, a base layer and a roadbed from top to bottom.
The lower bearing layer sequentially comprises a modified asphalt concrete lower surface layer, a modified asphalt stress absorption layer, a treated concrete pavement, a base layer and a roadbed from top to bottom.
The edge of the lower bearing layer is provided with a road shoulder, and the upper end surface of the road shoulder is paved with a first concrete layer and a sand-free porous concrete layer arranged on the upper end surface of the first concrete layer.
The first concrete layer and the sand-free porous concrete layer are arranged at the edge of the drainage asphalt layer, wherein the upper end surface of the sand-free porous concrete layer is flush with the upper end surface of the drainage asphalt layer.
(III) advantageous effects
The utility model provides a big space drainage bituminous paving structure compares with prior art, has following advantage:
through the porosity that increases drainage asphalt layer, promptly, compare the porosity on original drainage asphalt layer and be 15% to 25%, just increased the porosity widely, like this, even met heavy rainfall on a large scale, the rainwater also can be fast through the inside space on drainage asphalt layer, discharges from roadside slope side, reaches the purpose of quick discharge rainwater. It can be seen that, the utility model discloses a big space drainage bituminous paving structure construction is convenient, practice thrift the cost and possesses good drainage ability, can realize with the road surface ability phase-match that permeates water, reaches the purpose of rapid elimination road surface water, effectively promotes road driving safety, and the high-quality service function of full play drainage bituminous paving can obtain extensive application in the engineering.
Drawings
Fig. 1 is a schematic overall structure diagram of a large-gap drainage asphalt pavement structure according to a first embodiment of the present invention;
fig. 2 is a schematic view of the overall structure of a large-gap drainage bituminous pavement structure according to the second embodiment of the present invention.
Reference numerals:
1: a lower bearing layer; 11: modifying the middle surface layer of the asphalt concrete; 12: a modified asphalt concrete lower surface layer; 13: a base layer; 14: a roadbed; 2: a waterproof adhesive layer; 3: draining an asphalt layer; 4: an earth shoulder; 5: a first concrete layer; 6: a sand-free porous concrete layer; 120: a modified asphalt stress absorbing layer; 130: and treating the treated concrete pavement.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 and 2, the large-gap drainage asphalt pavement structure is schematically shown to include an undercarriage layer 1, a waterproof bonding layer 2, and a drainage asphalt layer 3.
In the embodiment of this application, this big space drainage bituminous paving structure includes from the lower layer 1 that holds that sets gradually down, waterproof bonding layer 2 and drainage pitch layer 3 down, and wherein, the porosity more than or equal to 25% and less than or equal to 30% on this drainage pitch layer 3. Specifically, the void ratio is greatly increased by increasing the void ratio of the drainage asphalt layer 3, that is, the void ratio is 15% to 25% compared with the original drainage asphalt layer 3, so that even if heavy rainfall in a large range is encountered, rainwater can be quickly discharged from the roadside slope side through the inner void of the drainage asphalt layer 3, and the purpose of quickly discharging rainwater is achieved. It can be seen that, the utility model discloses a big space drainage bituminous paving structure construction is convenient, practice thrift the cost and possesses good drainage ability, can realize with the road surface ability phase-match that permeates water, reaches the purpose of rapid elimination road surface water, effectively promotes road driving safety, and the high-quality service function of full play drainage bituminous paving can obtain extensive application in the engineering.
Note that the water permeability coefficient of the draining asphalt layer 3 is 8000ml/min (ml/min).
As shown in fig. 1 and 2, in a preferred embodiment of the present application, the draining asphalt layer 3 comprises epoxy asphalt, epoxy resin or modified polyurethane. Specifically, the drainage asphalt layer 3 can be formed by paving asphalt concrete made of epoxy asphalt with the ratio of the component A to the component B being 100: 415.
In a preferred embodiment of the present application, the draining asphalt layer 3 comprises a thin draining asphalt pavement, a single draining asphalt pavement or a double draining asphalt pavement.
In another preferred embodiment of the present application, the thin drainage asphalt pavement has a thickness of 1.5 cm or more and 3 cm or less. Preferably, the single layer drainage asphalt pavement may have a thickness of 1.5 cm, 2 cm, 2.5 cm, or 3 cm.
In a preferred embodiment of the present application, the thickness of the single-layered drainage asphalt pavement is 3 cm or more and 6 cm or less. Preferably, the thickness of the single-layer drainage asphalt pavement can be 3 cm, 4 cm, 5 cm or 6 cm.
In a preferred embodiment of the present application, the thickness of the double-layer drainage asphalt pavement is greater than or equal to 8 cm and less than or equal to 12 cm. Preferably, the thickness of the double-layered drainage asphalt pavement may be 8 cm, 9 cm, 10 cm, 11 cm or 12 cm.
The viscosity of the epoxy asphalt component A is 110-150, and the flash point is more than 200.
The viscosity of the epoxy asphalt component B is more than 300, and the flash point is more than 200.
After the component A and the component B are mixed according to the proportion of 100:415, the viscosity is more than 55, and the tensile strength of the elongation at break is improved.
In a preferred embodiment of the present application, the waterproof bonding layer 2 comprises modified emulsified asphalt, modified hot asphalt, or an asphalt synchronous chip seal.
Specifically, if the waterproof bonding layer 2 is made of modified emulsified asphalt, the spreading amount is 0.3-1.0 kg per square meter (kilogram per square meter) when the waterproof bonding layer is laid. If the modified hot asphalt is adopted, the spraying amount is 1.2-2.0 kg per square meter (kilogram per square meter) when the asphalt is paved. If the asphalt synchronous macadam seal coat is adopted, the asphalt spreading amount is 1.2-2.5 kg per square meter (kilogram per square meter) during paving, and the macadam full coverage rate is 50-75%.
This lower bearing layer 1 contains newly-built road design road surface structure and rebuilds, rebuilds and expands the former road surface design structure of road.
As shown in fig. 1 and 2, in a preferred embodiment of the present application, the lower bearing layer 1 includes, from top to bottom, a modified asphalt concrete middle layer 11, a modified asphalt concrete lower layer 12, a base layer 13, and a roadbed 14.
In another preferred embodiment of the present application, the lower bearing layer 1 comprises, from top to bottom, a modified asphalt concrete lower surface layer 12, a modified asphalt stress absorbing layer 120, a treated concrete pavement 130, a base layer 13 and a roadbed 14.
As shown in fig. 1 and 2, in a preferred embodiment of the present application, a road shoulder 4 is provided at the edge of the lower bearing layer 1, and a first concrete layer 5 and a sand-free porous concrete layer 6 provided on the upper end surface of the first concrete layer 5 are laid on the upper end surface of the road shoulder 4. The first concrete layer 5 may be C20 (representing the strength grade of concrete is 20) concrete, the porosity of the first concrete layer is smaller than that of the sand-free porous concrete layer 6, and when raining, rainwater may leak to the side through the gap inside the sand-free porous concrete layer 6 and then flow out to the outside, so as to achieve the purpose of timely draining water.
The first concrete layer 5 serves to reinforce the edge strength of the pavement.
In a preferred embodiment of the present application, the first concrete layer 5 and the sand-free porous concrete layer 6 are both disposed at the edge of the draining asphalt layer 3, wherein the upper end surface of the sand-free porous concrete layer 6 is flush with the upper end surface of the draining asphalt layer 3.
As shown in fig. 1, in the embodiment of the present application, the draining asphalt layer 1 is formed by laying draining asphalt concrete, and has a thickness of 4 cm, a porosity of 26%, and a water permeability coefficient of 8000ml/min (ml/min).
The waterproof bonding layer 2 adopts modified asphalt, and the spreading amount of the asphalt is 1.3kg/m2(kg/m). The lower bearing layer 1 comprises a superposed structure of a modified asphalt concrete middle surface layer 11 with the thickness of 6 cm, a modified asphalt concrete lower surface layer with the thickness of 8 cm, a base layer 13 and a roadbed 14. Meanwhile, in order to ensure the driving safety of the road surface, the length and the buried depth of the upright column of the steel guardrail should be increased by 5 centimeters, and meanwhile, the right vertical surface of the steel guardrail should be coincided with the roadside boundary line of the drainage asphalt.
As shown in fig. 2, in the embodiment of the present application, the draining asphalt layer 3 is formed by laying draining asphalt concrete, and has a thickness of 4 cm, a void ratio of 27%, and a water permeability coefficient of 8500ml/min (ml/min).
The waterproof bonding layer 2 adopts a modified asphalt synchronous broken stone sealing layer, and the asphalt spreading amount is 1.5kg/m2(kg/m) total macadam coverage was 60%. The lower bearing layer 1 comprises a modified asphalt concrete lower surface layer with the thickness of 8 cm, a modified asphalt stress absorption layer 120 with the thickness of 2 cm, a treated concrete pavement 130, a base layer 13 and a roadbed 14, and the modified structural form can effectively eliminate the stress concentration phenomenon and reduce the generation of reflection cracks of the cement concrete pavement.
In summary, by increasing the porosity of the drainage asphalt layer 3, that is, by 15% to 25% compared with the porosity of the original drainage asphalt layer 3, the porosity is greatly increased, so that even if heavy rainfall is encountered in a wide range, rainwater can quickly pass through the inner space of the drainage asphalt layer 3 and be discharged from the side of the roadside slope, thereby achieving the purpose of quickly discharging rainwater. It can be seen that, the utility model discloses a big space drainage bituminous paving structure construction is convenient, practice thrift the cost and possesses good drainage ability, can realize with the road surface ability phase-match that permeates water, reaches the purpose of rapid elimination road surface water, effectively promotes road driving safety, and the high-quality service function of full play drainage bituminous paving can obtain extensive application in the engineering.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a big space drainage bituminous paving structure which characterized in that includes:
the waterproof and waterproof asphalt layer comprises a lower bearing layer, a waterproof bonding layer and a drainage asphalt layer which are sequentially arranged from bottom to top, wherein the porosity of the drainage asphalt layer is more than 25% and less than or equal to 30%;
wherein, the water permeability coefficient of the drainage asphalt layer is 8000 ml/min.
2. The large-void drainage asphalt pavement structure according to claim 1, wherein the drainage asphalt layer comprises epoxy asphalt, epoxy resin or modified polyurethane.
3. The large-void drainage asphalt pavement structure according to claim 1, wherein the drainage asphalt layer comprises a thin-layer drainage asphalt pavement, a single-layer drainage asphalt pavement, or a double-layer drainage asphalt pavement.
4. The large-void drainage asphalt pavement structure according to claim 3, wherein the thin drainage asphalt pavement has a thickness of 1.5 cm or more and 3 cm or less;
the thickness of the single-layer drainage asphalt pavement is more than or equal to 3 cm and less than or equal to 6 cm.
5. The large-void drainage asphalt pavement structure according to claim 3, wherein the thickness of the double-layered drainage asphalt pavement is 8 cm or more and 12 cm or less.
6. The large void draining asphalt pavement structure of claim 1, wherein the waterproof bonding layer comprises modified emulsified asphalt, modified hot asphalt or asphalt synchronous chip seal.
7. The large-gap drainage asphalt pavement structure as claimed in claim 1, wherein the lower bearing layer comprises a modified asphalt concrete middle surface layer, a modified asphalt concrete lower surface layer, a base layer and a roadbed in sequence from top to bottom.
8. The large-gap drainage asphalt pavement structure according to claim 1, wherein the lower bearing layer comprises a modified asphalt concrete lower surface layer, a modified asphalt stress absorbing layer, a treated concrete pavement, a base layer and a roadbed from top to bottom.
9. The large-gap drainage asphalt pavement structure according to claim 1, wherein a road shoulder is arranged at the edge of the lower bearing layer, and a first concrete layer and a sand-free porous concrete layer arranged on the upper end surface of the first concrete layer are laid on the upper end surface of the road shoulder.
10. The large-void drainage asphalt pavement structure according to claim 9, wherein the first concrete layer and the sand-free porous concrete layer are both disposed at the edge of the drainage asphalt layer, wherein the upper end surface of the sand-free porous concrete layer is flush with the upper end surface of the drainage asphalt layer.
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| CN202020287124.3U CN212641083U (en) | 2020-03-10 | 2020-03-10 | Large-gap drainage asphalt pavement structure |
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| CN202020287124.3U CN212641083U (en) | 2020-03-10 | 2020-03-10 | Large-gap drainage asphalt pavement structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089438A (en) * | 2021-04-13 | 2021-07-09 | 邵阳市宝庆公路桥梁工程有限公司 | Fracturing grouting type road surface reconstruction structure and construction method thereof |
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2020
- 2020-03-10 CN CN202020287124.3U patent/CN212641083U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089438A (en) * | 2021-04-13 | 2021-07-09 | 邵阳市宝庆公路桥梁工程有限公司 | Fracturing grouting type road surface reconstruction structure and construction method thereof |
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