Bituminous pavement blooming disease treatment construction structure

Abstract

The utility model relates to the technical field of pavement disease treatment, in particular to a construction structure for asphalt pavement flooding disease treatment. Comprising an inner side lane, an outermost side lane, a hard shoulder, a slope protection road and a side ditch which are sequentially arranged from left to right, and the inner side lane sequentially comprises a pavement base layer and a pavement subbase layer from top to bottom; the outermost lane comprises a graded broken stone base layer arranged on the pavement subbase layer, a water-stable broken stone base layer arranged above the graded broken stone base layer and an asphalt layer arranged above the broken stone base layer, and longitudinal blind ditches and transverse blind ditches communicated with the longitudinal blind ditches are formed in the outermost lane; and the transverse blind ditches are communicated with the side ditches. The utility model provides the construction structure for treating the bleeding damage of the asphalt pavement, which has the advantages that different solutions are provided for different damages, the application range is wide, the cost is low, the construction is convenient, the roadbed stability is better, the service life is longer and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of pavement disease treatment, in particular to a construction structure for treating the disease of asphalt pavement slurry overflow. Background Art

[0002] In the initial stage of the construction of conventional roads, in order to save land, roadside green belts are generally not set. However, due to the rapid development of urbanization, in order to improve the road image, most roads will gradually add roadside green belts. Research shows that during the rainy season, rainwater will infiltrate into the subgrade range through the green belt. As time goes by, a water gathering surface will gradually form in the low-lying area of the subgrade. Coupled with the repeated action of vehicle loads, the water flow will seep up from the cracks in the base course to the asphalt surface and carry out a large amount of cement slurry, which is commonly known as "slurry overflow" in the industry. If not treated in time, it will exacerbate the formation of diseases such as potholes, seriously affecting the pavement formation and driving safety. Due to the addition of roadside green belts, the disease of pavement slurry overflow occurs significantly.

[0003] Chinese Patent CN118273184A discloses a construction structure and method for treating pavement diseases of old roads, which includes a pavement base course. A concrete layer is arranged on the top surface of the pavement base course, and an asphalt layer is arranged on the top surface of the concrete layer. A disease repair groove is jointly planed in the concrete layer and the asphalt layer. A connecting frame is embedded in the disease repair groove. The connecting frame is provided with a connecting mechanism for connecting with the concrete layer. A steel bar mesh is arranged in the connecting frame, and the connecting frame is provided with a fixing component for fixing the steel bar mesh. This application has the effect of improving the service life of the road after treating pavement diseases of old roads.

[0004] However, there is no drainage structure in the pavement base course of this technical solution, which will cause the water on the road surface to accumulate in the repair groove, resulting in the infiltration of water inside the entire subgrade, insufficient stability, and shortened service life. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a construction structure for treating the disease of asphalt pavement slurry overflow in view of the deficiencies of the prior art. By installing longitudinal and transverse blind drains in the graded crushed stone base course of the driving lane, the function of discharging surface water is realized, and the problem of subgrade water infiltration in the prior art is solved.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A construction structure for treating the disease of asphalt pavement slurry overflow, comprising: an inner lane, an outermost lane, a hard shoulder, a slope protection road and a side ditch are arranged in sequence from left to right. The inner lane successively comprises from top to bottom: a pavement base course and a pavement sub-base course. The outermost lane comprises: a graded crushed stone base course arranged on the pavement sub-base course, a water-stabilized crushed stone base course arranged above the graded crushed stone base course, and an asphalt layer arranged above the crushed stone base course. A longitudinal blind ditch and a transverse blind ditch communicated with the longitudinal blind ditch are arranged in the outermost lane, and the transverse blind ditch is communicated with the side ditch.

[0008] Preferably, the hard shoulder comprises: a plain concrete base course arranged above the graded crushed stone base course and an original surface course arranged above the plain concrete base course.

[0009] Preferably, the plain concrete base course is arranged closely adjacent to the water-stabilized crushed stone base course, and the original surface course is arranged closely adjacent to the asphalt layer.

[0010] Preferably, a sidewall painting tack coat is arranged between the original surface course and the asphalt layer.

[0011] Preferably, a hot asphalt joint filling is arranged at the upper end of the sidewall painting tack coat.

[0012] Preferably, a self-adhesive high-strength composite cloth is arranged between the water-stabilized crushed stone base course and the asphalt layer.

[0013] Preferably, an anti-filter geotextile is arranged between the water-stabilized crushed stone base course and the graded crushed stone base course.

[0014] Preferably, the transverse blind ditch comprises: a PVC pipe arranged in the middle of the graded crushed stone base course and a geotextile wrapped around the outer periphery of the PVC pipe.

[0015] Preferably, the outermost lane comprises: the graded crushed stone base course arranged on the pavement sub-base course, an ATB asphalt macadam base course arranged above the graded crushed stone base course, and the asphalt layer arranged above the ATB asphalt macadam base course.

[0016] Preferably, the ATB asphalt macadam base course extends to the hard shoulder and is arranged between the original surface course and the graded crushed stone base course.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) By only treating the base course in the outer lane of the present utility model, different filling materials are replaced to correspond to diseases in different situations, and longitudinal and transverse blind ditches are additionally arranged, the construction time is significantly shortened, the construction is convenient, the project cost is saved, and it has good economy and practicability.

[0019] (2) In the present utility model, the backfill material for the carriageway position (above the longitudinal and transverse French drains) is cement stabilized macadam to ensure the integrity of the road surface structure. The backfill material for the hard shoulder position (above the transverse French drain) is plain concrete. The maintenance time of the carriageway is relatively long, but it can ensure the normal passage of the non-motor vehicle lane and avoid the non-motor vehicle lane detouring through the carriageway. It is mainly applicable to the replacement of the entire base course.

[0020] (3) In the present utility model, the backfill material for both the traffic lane and the hard shoulder positions (above the longitudinal and transverse French drains) is ATB asphalt macadam, which can ensure the rapid passage of both the carriageway and the non-motor vehicle lane at the same time. It is mainly applicable to the replacement of the base course at the longitudinal and transverse cracks. Moreover, ATB asphalt macadam has the characteristics of high structural strength, short construction period and forming period, and good rutting resistance after forming. It can enhance the bearing capacity of urban roads and reduce the aging of asphalt.

[0021] (4) In the present utility model, the combination of PVC pipes and the geotextile around them is used to replace the ordinary French drain. Because PVC pipes have good tensile, compressive and corrosion resistance capabilities, and the geotextile has the excellent properties of light weight, low cost, corrosion resistance, anti-filtration, drainage, isolation, reinforcement, etc., it can ensure the service life of the French drain.

[0022] (5) In the present utility model, a tack coat is applied to the side walls between the original surface layer and the asphalt layer to ensure that the original surface layer and the asphalt layer can be closely adhered without problems such as gaps, thus ensuring the integrity of the entire road surface. And a hot asphalt joint seal is provided at the upper end of the side wall tack coat. The hot asphalt joint seal can form a protective layer, improve the corrosion resistance of the road surface, extend the service life of the road surface, and can also improve the road surface quality. It can fill the voids of the road surface, make the road surface flat and smooth, improve the driving comfort and safety, and the hot asphalt joint seal can also improve the skid resistance of the road surface, reduce the slippage during vehicle braking, and improve the driving stability, thereby reducing traffic accidents.

[0023] (6) In the present utility model, an anti-filtration geotextile is provided between the cement stabilized macadam base course and the graded crushed stone base course. It can not only effectively prevent the loss of soil particles, but also control the water flow, improve the stability and durability of the entire road surface. The anti-filtration geotextile can prevent piping and seepage water, prevent the collapse of the hard shoulder, and it also has good puncture resistance and can resist plant roots, thus ensuring the service life of the entire road surface.

[0024] In summary, the present utility model has the advantages of having different solutions for different diseases, wide application range, low cost, convenient construction, better subgrade stability and longer service life, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1Schematic diagram of the overall structure of the first embodiment of the present utility model;

[0026] Figure 2 Cross-sectional view of the first embodiment of the present utility model;

[0027] Figure 3 For Figure 2 Enlarged view of part A;

[0028] Figure 4 Schematic diagram of the overall structure of the second embodiment of the present utility model;

[0029] Figure 5 Cross-sectional view of the second embodiment of the present utility model.

[0030] Reference numerals: 1 - Inner lane; 11 - Road surface base course; 12 - Road surface sub-base course; 2 - Outermost lane; 21 - Graded crushed stone base course; 211 - Filter geotextile; 22 - Cement stabilized macadam base course; 23 - Asphalt layer; 231 - Self-adhesive high-strength composite fabric; 24 - Longitudinal blind drain; 25 - Transverse blind drain; 251 - PVC pipe; 252 - Geotextile; 26 - ATB asphalt macadam base course; 3 - Hard shoulder; 31 - Plain concrete base course; 32 - Original surface layer; 321 - Sidewall painted with tack coat; 322 - Hot asphalt joint filling; 4 - Berm; 5 - Side ditch. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0033] Embodiment 1

[0034] As Figures 1 - 3 shown, this embodiment provides a construction structure for treating the slurry overflow disease of asphalt pavement, including: an inner lane 1, an outermost lane 2, a hard shoulder 3, a slope protection road 4, and a side ditch 5 arranged in sequence from left to right. The inner lane 1 includes, from top to bottom, a pavement base layer 11 and a pavement sub-base layer 12. The outermost lane 2 includes: a graded crushed stone base layer 21 arranged on the pavement sub-base layer 12, a cement stabilized crushed stone base layer 22 arranged above the graded crushed stone base layer 21, and an asphalt layer 23 arranged above the crushed stone base layer. A longitudinal blind ditch 24 and a transverse blind ditch 25 communicating with the longitudinal blind ditch 24 are arranged in the outermost lane 2. The transverse blind ditch 25 communicates with the side ditch 5, which has a significant effect on the slurry overflow disease of highway asphalt pavement. It can be targeted at different road sections and disease types, and has the advantages of good economy and convenient construction. It can effectively solve problems such as long treatment cycle, high cost, and difficult traffic organization of the slurry overflow disease. And by only treating the base layer in the outermost lane 2 and adding a longitudinal blind ditch 24 and a transverse blind ditch 25, the construction time is significantly shortened and the project cost is saved, having good economy and practicability.

[0035] Among them, for different degrees of damage to the existing base layer, targeted maintenance treatment plans can be adopted. For a severely damaged base layer (when block cracks appear), the entire base layer needs to be replaced. For only partial longitudinal and transverse cracks, only the base layer at the longitudinal and transverse crack positions needs to be replaced. For the above two situations, longitudinal and transverse pavement structure lapping treatments are respectively carried out to prevent new diseases from occurring at the joints.

[0036] Meanwhile, the hard shoulder 3 includes: a plain concrete base layer 31 disposed above the graded crushed stone base layer 21 and an original surface layer 32 disposed above the plain concrete base layer 31. The plain concrete base layer 31 is disposed adjacent to the cement stabilized macadam base layer 22, and the original surface layer 32 is disposed adjacent to the asphalt layer 23, making the bases of both the outermost lane 2 and the hard shoulder 3 more stable and convenient for construction.

[0037] In this embodiment, a sidewall painting tack coat 321 is provided between the original surface layer 32 and the asphalt layer 23 to ensure that the original surface layer 32 and the asphalt layer 23 can be closely bonded without problems such as gaps, thus ensuring the integrity of the entire road surface.

[0038] In this embodiment, a hot asphalt joint filling 322 is provided at the upper end of the sidewall painting tack coat 321. The hot asphalt joint filling 322 can form a protective layer, improve the corrosion resistance of the road surface, extend the service life of the road surface, and also improve the road surface quality. It can fill the voids of the road surface to make the road surface flat and smooth, improve the comfort and safety of driving, and the hot asphalt joint filling 322 can also improve the skid resistance of the road surface, reduce the slippage during vehicle braking, improve the driving stability, and thus reduce the number of traffic accidents.

[0039] In this embodiment, a self-adhesive high-strength composite cloth 231 is provided between the cement stabilized macadam base layer 22 and the asphalt layer 23. Mainly due to the self-adhesive property of the self-adhesive high-strength composite cloth 231, it can be directly pasted on substrates such as concrete, asphalt, and masonry without the need for additional glue or other adhesives, simplifying the construction steps, being convenient to use, and improving the construction efficiency.

[0040] In this embodiment, an anti-filter geotextile 211 is provided between the cement stabilized macadam base layer 22 and the graded crushed stone base layer 21. As a high-performance geosynthetic material, the anti-filter geotextile 211 plays an important role in civil engineering. It can not only effectively prevent the loss of soil particles, but also control the water flow, improve the stability and durability of the entire road surface. The anti-filter geotextile 211 can prevent piping and seepage water, prevent the collapse of the hard shoulder 3, and it also has good puncture resistance and can resist plant roots, thus ensuring the service life of the entire road surface.

[0041] In this embodiment, the horizontal blind drain 25 includes: a PVC pipe 251 disposed in the middle of the graded crushed stone base layer 21 and a geotextile 252 wrapped around the outer periphery of the PVC pipe 251. Because the PVC pipe 251 has advantages such as good tensile, compressive, and corrosion resistance, it can ensure that the PVC pipe 251 has less wear during use, thereby extending its service life.

[0042] Of course, the geotextile 252, also known as geotextile fabric, is a water-permeable geosynthetic material made of synthetic fibers through needling or weaving. It has good stretchability, corrosion resistance, water permeability, and anti-microbial properties. The geotextile 252 is convenient for construction, has a wide range of applications, and also has excellent properties such as light weight, low cost, corrosion resistance, and functions of filtration, drainage, isolation, and reinforcement.

[0043] In addition, when replacing the entire base course, the backfill material for the carriageway position, i.e., the inner lane 1 and the outermost lane 2 (above the longitudinal blind drain 24 and the transverse blind drain 25), is cement-stabilized macadam to form the cement-stabilized macadam base course 22 to ensure the integrity of the road surface structure. The backfill material for the hard shoulder 3 position (above the transverse blind drain 25) is plain concrete to form the plain concrete base course 31, which can ensure the normal passage of non-motorized vehicles and prevent non-motorized vehicles from detouring via the carriageway.

[0044] Embodiment 2

[0045] As Figure 4 and Figure 5 shown, the same or corresponding components as those in Embodiment 1 are labeled with the corresponding reference numerals in Embodiment 1. For the sake of simplicity, only the differences from Embodiment 1 will be described below. The differences between this Embodiment 2 and Embodiment 1 are as follows:

[0046] The outermost lane 2 includes: the graded crushed stone base course 21 provided on the subbase course 12 of the road surface, the ATB asphalt macadam base course 26 provided above the graded crushed stone base course 21, and the asphalt layer 23 provided above the ATB asphalt macadam base course 26. That is, the ATB asphalt macadam base course 26 is provided between the asphalt layer 23 and the graded crushed stone base course 21, and the ATB asphalt macadam base course 26 extends to the hard shoulder 3 and is provided between the original surface layer 32 and the graded crushed stone base course 21 to ensure the strength of the road surface.

[0047] Of course, the ATB asphalt macadam base course 26 can improve the service performance of the road surface and extend the service life of the road surface. The ATB asphalt stabilized macadam is a dense asphalt stabilized macadam mixture designed according to the principle of dense gradation with a relatively small porosity. It has the characteristics of high structural strength, short construction period and forming period, and good rutting resistance after forming. It can enhance the bearing capacity of urban roads and reduce the aging of asphalt.

[0048] In addition, when replacing the base course at the longitudinal and transverse cracks, the backfill material for the carriageway, i.e., the inner lane 1, the outermost lane 2, and the hard shoulder 3 positions (above the longitudinal blind drain 24 and the transverse blind drain 25), is all ATB asphalt macadam, which can ensure the fast passage of both the carriageway and the non-motorized vehicle lane at the same time.

[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A construction structure for treating asphalt pavement flooding, characterized in that: include: From left to right, there are an inner lane, an outermost lane, a hard shoulder, a slope protection road and a side ditch. The inner lane includes from top to bottom: a road surface base and a road surface subbase. The outermost lane includes: a graded crushed stone base arranged on the road surface subbase, a water-stable crushed stone base arranged above the graded crushed stone base and an asphalt layer arranged above the water-stable crushed stone base. A longitudinal blind ditch and a transverse blind ditch connected to the longitudinal blind ditch are arranged in the outermost lane, and the transverse blind ditch is connected to the side ditch.

2. The asphalt pavement flooding disease treatment construction structure according to claim 1 is characterized in that: The hard shoulder comprises: a plain concrete base layer arranged above the graded crushed stone base layer and an original surface layer arranged above the plain concrete base layer.

3. The asphalt pavement flooding disease treatment construction structure according to claim 2 is characterized in that: The plain concrete base layer is arranged close to the water-stabilized crushed stone base layer, and the original surface layer is arranged close to the asphalt layer.

4. The asphalt pavement flooding disease treatment construction structure according to claim 2 is characterized in that: A side wall coating adhesive layer is arranged between the original surface layer and the asphalt layer.

5. The asphalt pavement flooding disease treatment construction structure according to claim 4 is characterized in that: The upper end of the side wall coating adhesive layer is provided with hot asphalt grouting.

6. The asphalt pavement flooding disease treatment construction structure according to claim 1 is characterized in that: A self-adhesive high-strength composite cloth is arranged between the water-stabilized macadam base layer and the asphalt layer.

7. The asphalt pavement flooding disease treatment construction structure according to claim 1 is characterized in that: An anti-filter geotextile is arranged between the water-stable crushed stone base layer and the graded crushed stone base layer.

8. The asphalt pavement flooding damage treatment construction structure according to claim 1 is characterized in that: The transverse blind ditch comprises: a PVC pipe arranged in the middle of the graded crushed stone base layer and a geotextile wrapped around the outer periphery of the PVC pipe.

9. The asphalt pavement flooding disease treatment construction structure according to claim 1 is characterized in that: The outermost lane includes: the graded crushed stone base layer arranged on the road surface subbase layer, the ATB asphalt crushed stone base layer arranged above the graded crushed stone base layer, and the asphalt layer arranged above the ATB asphalt crushed stone base layer.

10. The asphalt pavement flooding disease treatment construction structure according to claim 9, characterized in that: The ATB asphalt macadam base layer extends to the hard shoulder.

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