Road structure capable of improving music pavement drainage effect

Abstract

The application discloses a road structure capable of improving the music pavement drainage effect, which comprises a surface layer structure, a cushion layer structure, a foundation structure and a drainage structure. The surface layer structure comprises a music groove, an asphalt cover, a drainage asphalt layer, modified asphalt and an inclined drainage joint. The cushion layer structure comprises a gravel water storage cushion layer, a drainage cushion layer and a fine stone cushion layer. The foundation structure comprises an artificial roadbed and a natural soil base. The drainage structure comprises a rainwater grate well lid, an assembled slot, a longitudinal collection pipeline, a flow guide pipe, a drainage pipe and a screen plate. The application can be applied to the music pavement of the scenic road with higher requirements for road landscape, and can effectively eliminate the water accumulation problem of the music road, and avoid the bad music effect, traffic accidents and structure damage caused by the water accumulation.

Description

Technical Field

[0001] This invention relates to the field of road structure technology, and in particular to a road structure that can improve the drainage effect of musical pavement. Background Technology

[0002] With the continuous improvement of people's living standards and the continuous development of the social economy, people have put forward higher requirements for road landscapes related to daily travel, especially scenic roads. Musical roads, as a new form of road, use unique and innovative road sound production methods to meet people's higher requirements for road landscapes.

[0003] By carving grooves into the road surface, a musical road surface can be created. When a vehicle drives over continuous grooves of varying intervals and lengths, the tires squeeze into the gaps in the tread, producing musical sounds of different pitches and durations, which can then be arranged to form a song.

[0004] However, current acoustic pavement technology mainly involves grooved cement panels and relies heavily on traditional drainage ditches without any modifications to the panels or ditches for drainage. This leads to a rapid decline in the anti-skid and drainage performance of acoustic pavements. Water accumulation not only affects the acoustic performance of the pavement but also contributes to frequent traffic accidents and endangers personal safety due to insufficient anti-skid properties and impaired visibility. Furthermore, if water is not drained promptly, rainwater infiltration can easily damage the pavement structure. In cold weather, water accumulation in the grooves also necessitates improvements in the anti-skid and anti-freezing properties of acoustic pavements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a road structure that can improve the drainage effect of musical pavement. This road structure can solve the problems of poor sound effect, driving safety hazards, and structural damage risk caused by water accumulation in grooves on musical pavement.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A road structure that improves drainage performance of musical surfaces includes a surface layer structure, a subbase structure, a foundation structure, and a drainage structure.

[0008] The surface layer structure, subbase structure, and foundation structure are arranged sequentially from top to bottom.

[0009] The surface structure includes a drainage asphalt layer and an asphalt overlay, which are laid out sequentially from bottom to top.

[0010] The thickness of the asphalt overlay is 10~20mm, the maximum nominal particle size of the particles in the asphalt overlay is 9.5~13.2mm, and the porosity is 13%~15%.

[0011] The top of the asphalt overlay is provided with a music groove. The depth of the music groove is 5-10mm, and the depth of the music groove is 5-10mm less than the thickness of the asphalt overlay. The width of the music groove is 8-12mm.

[0012] The bottom and sidewalls of each music groove are coated with a waterproof material.

[0013] Each music groove has several sloping drainage slots on its sidewalls; each sloping drainage slot is 1-2mm wide and has an inclination angle of 30-60° to the horizontal plane.

[0014] Drainage structures are installed on both sides of the surface layer and the subbase layer for drainage of the surface layer and the subbase layer.

[0015] The top surface of the asphalt overlay is provided with a two-way cross slope, and the top of the two-way cross slope is located at the center of the asphalt overlay road surface; the gap of the inclined drainage joint located in the middle of the two-way cross slope is d1, and the gap of the inclined drainage joint located on both sides of the two-way cross slope is d2, then d1>d2.

[0016] The cushion structure includes a crushed stone water storage cushion layer, a drainage cushion layer, and a fine stone cushion layer arranged from top to bottom; wherein, the average particle size of the fine stones in the fine stone cushion layer is smaller than the average particle size of the crushed stones in the crushed stone water storage cushion layer.

[0017] The particle size distribution of crushed stone in the crushed stone water storage cushion layer is 3~5mm; the particle size distribution of fine stone in the fine stone cushion layer is 1~3mm; and the particle size distribution of cushion layer particles in the drainage cushion layer is 5~10mm.

[0018] The waterproof material coated inside each musical groove is modified bitumen, with a coating thickness of 2-3 mm.

[0019] Water-repellent agents are added to the modified asphalt.

[0020] The modified asphalt contains chloride-based antifreeze materials.

[0021] The basic structure includes an artificial roadbed and a natural soil subgrade; the artificial roadbed is located at the bottom of the subbase structure; the natural soil subgrade is located on both sides of the artificial roadbed, and its top is flush with the top of the fine stone subbase in the subbase structure.

[0022] The drainage structure includes assembled slots, manhole covers, longitudinal collection pipes, sieve plates, and drain pipes.

[0023] The assembly slots are set on the top of the natural soil base on both sides of the driveway.

[0024] The manhole cover is placed on top of each assembly slot.

[0025] The sieve plate is attached to both sides of the crushed stone water storage cushion layer and the drainage cushion layer of the surface layer structure and the cushion layer structure.

[0026] The longitudinal collection pipe is buried in the fine stone cushion layer along the longitudinal direction.

[0027] Drainage pipes are used to drain water from assembly slots and longitudinal collection pipes.

[0028] The sieve plate has several water passages of the same size, and each water passage has a mesh size of 10.

[0029] The present invention has the following beneficial effects:

[0030] 1. This invention can be applied to musical pavements on scenic roads where higher requirements are placed on road landscape. For the renovation project of road sections prone to water accumulation, it can effectively eliminate the problem of water accumulation on musical highways and avoid poor music effects, traffic accidents and structural damage.

[0031] 2. This invention replaces the old cement panel with a semi-open graded asphalt overlay made of ultra-thin, ultra-viscous modified asphalt with larger pores to prevent the formation of a water layer on the road surface; it also has oblique drainage slits carved on both sides of the original musical pavement grooves to prevent water accumulation inside the grooves; a gravel water-retaining cushion layer with a hydrophobic structure is set up, which can effectively diffuse the stress concentration at the contact point between the ultra-thin, ultra-viscous modified asphalt semi-open graded asphalt overlay and the groove opening, extending the service life of the ultra-thin, ultra-viscous modified asphalt semi-open graded asphalt overlay, and can also work with transverse collection pipes, diversion pipes, and drainage pipes to gradually discharge the absorbed water to both sides; a sieve plate with uniform mesh size is set up, which can not only effectively guide the seepage water inside the musical pavement to the assembly groove, but also prevent the wet surface layer and base layer materials from slipping and clogging the assembly groove.

[0032] 3. This invention patent involves coating the inner wall of the music groove with modified asphalt containing water-repellent agents, rubber particles, and chloride-based antifreeze materials, thereby reducing the area of ​​the music groove in direct contact with water. In cold winters, this reduces ice formation inside the groove, increases the road surface's anti-skid effect, reduces damage to the groove caused by ice formation, and ultimately provides the road surface with excellent anti-freeze cracking properties. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a road structure that can improve the drainage effect of a musical road surface according to the present invention.

[0034] Figure 2 This is a top view of a road structure that can improve the drainage effect of a musical pavement according to the present invention.

[0035] Figure 3 This is a schematic diagram of the arrangement of the music grooves in this invention.

[0036] Figure 4 This is a schematic diagram showing the layout of the oblique drainage seams in a single music groove in this invention.

[0037] Among them are:

[0038] 1. Surface structure;

[0039] 101. Music groove; 102. Asphalt overlay; 103. Drainage asphalt layer; 104. Modified asphalt; 105. Sloping drainage joint;

[0040] 2. Subbase structure;

[0041] 201. Crushed stone water storage cushion layer; 202. Drainage cushion layer; 203. Fine stone cushion layer;

[0042] 3. Basic structure;

[0043] 301. Man-made roadbed; 302. Natural soil subgrade;

[0044] 4. Drainage structure;

[0045] 401. Manhole cover; 402. Assembly pipe; 403. Assembly slot; 404. Longitudinal collection pipe; 405. Diversion pipe; 406. Drainage pipe; 407. Screen plate. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0047] In the description of this invention, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this invention. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the scope of protection of this invention.

[0048] like Figure 1 and Figure 2 As shown, a road structure that can improve the drainage effect of a musical pavement includes a surface layer structure 1, a subbase structure 2, a foundation structure 3, and a drainage structure 4.

[0049] The surface layer structure, subbase structure, and foundation structure are arranged sequentially from top to bottom.

[0050] The surface structure includes a drainage asphalt layer 103 and an asphalt overlay 102 arranged sequentially from bottom to top.

[0051] The thickness of the aforementioned dredging asphalt layer is preferably 10 mm, and the asphalt material is preferably high-penetration emulsified asphalt.

[0052] The asphalt overlay has a thickness of 10-20mm, with a maximum nominal particle size of 9.5-13.2mm and a porosity of 13%-15%. This improves the drainage effect of the surface layer, allowing excess water on the road surface to infiltrate into the gravel water-retaining subbase in a timely manner, preventing the formation of a water layer on the surface. Simultaneously, the low stiffness of the asphalt overlay effectively eliminates the dull "impact noise" produced by tires hitting grooves, highlighting musical sounds and improving the acoustic effect of the pavement.

[0053] A music groove 101 is provided on the top of the asphalt overlay. The depth of the music groove is 5-10mm. The depth of the groove shall not exceed the thickness of the asphalt overlay and shall maintain a thickness difference of 5-10mm with the thickness of the asphalt overlay to delay the damage of the overlay layer due to stress concentration. The width of the music groove is 8-12mm.

[0054] The construction distance and spacing of the aforementioned music grooves should be determined based on the design speed of the selected road section. Appropriate music segments should be selected for high-speed road sections and low-speed road sections to enhance the driving experience of the music-themed road.

[0055] Preferably, the construction distance and spacing are set on the surface layer according to the requirements of the audio and duration of the musical pavement. The specific implementation process is as follows:

[0056] (1) Divide the music into “1, 2, 3, 4, 5, 6, 7, 1” and into continuous pitches;

[0057] (2) Calculate the duration of each note in the continuous pitch, specifically: t(s) = 60 / n × note length / quarter note length;

[0058] In the formula: n is the number of beats per minute for the note.

[0059] (3) Calculate the construction distance corresponding to each note frequency, specifically: S(m) = v × t.

[0060] In the formula: v is the design speed of the road, in m / s; t is the duration of the tone, in s.

[0061] (4) Calculate the groove spacing corresponding to each note frequency, specifically: L(m) = v / f.

[0062] In the formula: v is the design speed of the road in m / s; f is the frequency of each note in Hz.

[0063] like Figure 3 As shown, the bottom and sidewalls of each music groove are coated with a waterproof material, preferably modified bitumen 104, and the coating thickness of the modified bitumen is preferably 2-3 mm.

[0064] Furthermore, the addition of one or a combination of water-repellent agents, rubber particles, and chloride-based antifreeze materials to the modified asphalt can reduce the area of ​​direct contact between the transverse grooves and water. In cold winters, this reduces ice formation inside the grooves, increases the road surface's anti-skid effect, and reduces damage to the grooves caused by internal ice formation, thus resulting in better frost crack prevention for the road surface.

[0065] like Figure 3 As shown, each music groove is preferably provided with several oblique drainage slots 105 on its sidewall; the width of each oblique drainage slot is 1-2mm, and the inclination angle of each oblique drainage slot to the horizontal plane is 30~60°, so as to promote the dissipation of the dull noise generated by the front of the tire hitting the groove directly through the slot, and improve the sound effect of the music road surface.

[0066] Furthermore, the top surface of the asphalt overlay is provided with a two-way cross slope to divert water from the road surface to the drainage structures on both sides.

[0067] The crest of the bidirectional cross slope is located at the center of the asphalt overlay pavement; the gap of the inclined drainage joint located in the middle of the bidirectional cross slope is d1, and the gap of the inclined drainage joints located on both sides of the bidirectional cross slope is d2. Therefore, d1 > d2, as detailed below. Figure 4 As shown, this design allows residual water in the music groove to seep into the gravel water storage layer in a timely manner, preventing water accumulation in the music groove. The non-equidistant drainage seams change the monotonous inherent frequency of the groove, depicting the characteristics of sound changes over time. A single groove emits multiple notes, forming a "polyphonic" musical aesthetic.

[0068] The cushion structure includes, from top to bottom, a crushed stone water storage cushion layer 201, a drainage cushion layer 202, and a fine stone cushion layer 203; wherein, the average particle size of the fine stones in the fine stone cushion layer is smaller than the average particle size of the crushed stone in the crushed stone water storage cushion layer. Specifically, the particle size distribution of the crushed stone in the crushed stone water storage cushion layer is preferably 3~5mm; the particle size distribution of the fine stones in the fine stone cushion layer is 1~3mm; and the particle size distribution of the cushion layer particles in the drainage cushion layer is 5~10mm.

[0069] The particle size setting of the above-mentioned crushed stone water storage cushion layer can effectively diffuse the stress concentration at the groove opening, extend the service life of the surface layer, and cooperate with the collection of accumulated water to gradually discharge to both sides.

[0070] The basic structure includes an artificial roadbed 301 and a natural soil subgrade 302; the artificial roadbed is located at the bottom of the subbase structure; the natural soil subgrade is located on both sides of the artificial roadbed, and its top is flush with the top of the fine stone subbase in the subbase structure.

[0071] Drainage structures are installed on both sides of the surface layer and the subbase layer for drainage of the surface layer and the subbase layer.

[0072] The drainage structure includes an assembled slot 403, a manhole cover 401, a longitudinal collection pipe 404, a diversion pipe 405, a screen plate 407, and a drainage pipe 406.

[0073] The assembly slots are located on the top of the natural soil base on both sides of the roadway, and the cross-section is preferably rectangular, trapezoidal, or shaped. The slope of the assembly slot 403 is the same as the longitudinal slope of the road. A drainage pipe 406 is installed at the lowest point of the assembly slot 403, and the drainage pipe 406 is connected to the side wall of the assembly slot 403. The inner bottom height of the drainage pipe 406 is lower than the inner bottom height of the assembly slot 403. During use, accumulated water collects in the assembly slot 403 and is discharged to the outside of the road through the drainage pipe 406.

[0074] The manhole cover, preferably a rainwater grate cover, is installed on top of each assembly slot. Compared to existing slotted drainage ditch covers, rainwater grate covers have more and larger drainage holes, which increases the water flow and speeds up the flow. The height of the rainwater grate cover is lower than the height of the adjacent road surface, making it easier for accumulated water to flow into the assembly slot.

[0075] The screen plate should be vertically installed close to the surface structure, crushed stone water-retaining cushion layer, and drainage cushion layer. The internal mesh size is ten meshes, and the mesh size is uniform, so as to effectively guide the seepage water inside the pavement to the assembly groove and prevent the wet surface and base materials from slipping and clogging the assembly groove.

[0076] Longitudinal collection pipes 404 are installed closely along the longitudinal direction (i.e., the driving direction) on both sides of the fine stone cushion layer 203. The slope of the longitudinal collection pipes 404 is the same as the longitudinal slope of the road, and a diversion pipe 405 is installed at the lowest point. The diversion pipe 405 is installed along the depth direction, along the slope of the artificial roadbed, through the bottom of the artificial roadbed, and connects to the drainage pipe 406. In use, water accumulated inside the road structure is collected in the longitudinal collection pipes 404, connected to the drainage pipe 406 via the diversion pipe 405, and finally discharged to the outside of the road.

[0077] In this embodiment, when there are multiple water outlets, the distance between two adjacent water outlets is 5-10m.

[0078] This invention can be applied to the renovation of sections of roads prone to water accumulation, effectively eliminating the problem of water accumulation on musical highways and preventing issues such as poor musical effects, traffic accidents, and structural damage. Using this technical solution, the invention uses a grooved surface layer structure 1 and a drainage structure 4 to guide water accumulation on the road surface, preventing the formation of a water layer. A drainage-resistant subbase structure 2, in conjunction with a longitudinal collection pipe 404, a diversion pipe 405, and a drainage pipe 406, can gradually discharge absorbed water to both sides, thus enabling the overall structure to continuously guide water accumulation.

[0079] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the protection scope of the present invention.

Claims

1. A road structure that improves drainage performance on musical surfaces, characterized in that: It includes surface layer structure, subbase structure, foundation structure, and drainage structure; The surface layer structure, the subbase structure, and the foundation structure are arranged sequentially from top to bottom; The surface structure includes a drainage asphalt layer and an asphalt overlay, which are arranged sequentially from bottom to top; The thickness of the asphalt overlay is 10~20mm, the maximum nominal particle size of the particles in the asphalt overlay is 9.5~13.2mm, and the porosity is 13%~15%; The top of the asphalt overlay is provided with a music groove. The depth of the music groove is 5-10mm, and the depth of the music groove is 5-10mm less than the thickness of the asphalt overlay. The width of the music groove is 8-12mm. The construction distance and spacing of the music grooves should be determined based on the design speed of the selected road section. The corresponding music segments should be selected for road sections with high speeds and music segments with low speeds. The bottom and sidewalls of each music groove are coated with a waterproof material; Each music groove has several sloping drainage slits on its sidewalls; the width of each sloping drainage slit is 1-2mm, and the angle of inclination of each sloping drainage slit to the horizontal plane is 30~60°. The top surface of the asphalt overlay is provided with a two-way cross slope, and the top of the two-way cross slope is located at the center of the asphalt overlay road surface; the gap of the inclined drainage joint located in the middle of the two-way cross slope is d1, and the gap of the inclined drainage joint located on both sides of the two-way cross slope is d2, then d1>d2. The slanted drainage joints are not evenly spaced; Drainage structures are installed on both sides of the surface layer structure and the subbase structure for drainage of the surface layer structure and the subbase structure; The drainage structure includes an assembled slot, a manhole cover, a longitudinal collection pipe, a screen plate, and a drain pipe; The assembly slots are set on the top of the natural soil base on both sides of the driveway; The manhole cover is installed on top of each assembly slot; The sieve plate is attached to both sides of the crushed stone water storage cushion layer and the drainage cushion layer of the surface layer structure and the cushion layer structure; The longitudinal collection pipe is buried in the fine stone cushion layer along the longitudinal direction; Drainage pipes are used to drain water from assembly slots and longitudinal collection pipes.

2. The road structure capable of improving the effect of draining water from a road surface by music according to claim 1, characterized in that: The cushion structure includes a crushed stone water storage cushion layer, a drainage cushion layer, and a fine stone cushion layer arranged from top to bottom; wherein, the average particle size of the fine stones in the fine stone cushion layer is smaller than the average particle size of the crushed stones in the crushed stone water storage cushion layer.

3. The road structure for improving the effect of draining water from a road surface by music according to claim 1, wherein: The particle size distribution of crushed stone in the crushed stone water storage cushion layer is 3~5mm; the particle size distribution of fine stone in the fine stone cushion layer is 1~3mm; and the particle size distribution of cushion layer particles in the drainage cushion layer is 5~10mm.

4. The road structure for improving the effect of draining water from a road surface by music according to claim 1, wherein: The waterproof material coated inside each musical groove is modified bitumen, with a coating thickness of 2-3 mm.

5. The road structure for improving the effect of draining water from a road surface by music according to claim 4, characterized in that: Water-repellent agents are added to the modified asphalt.

6. The road structure according to claim 4 or 5 that improves drainage performance of musical surfaces, characterized in that: The modified asphalt contains chloride-based antifreeze materials.

7. The road structure for improving the effect of draining water from a road surface by music according to claim 1, wherein: The basic structure includes an artificial roadbed and a natural soil subgrade; the artificial roadbed is located at the bottom of the subbase structure; the natural soil subgrade is located on both sides of the artificial roadbed, and its top is flush with the top of the fine stone subbase in the subbase structure.

8. The road structure capable of improving the effect of draining water from a road surface by music according to claim 7, characterized in that: The sieve plate has several water passages of the same size, and each water passage has a mesh size of 10.

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