JP2022011211A - Pavement structure - Google Patents

Abstract

To take advantage of the characteristics of asphalt and the correlation between parking spaces and vehicles, to provide durability and permeability that are desirable in use, and to reduce the load of construction compared to conventional methods.SOLUTION: This pavement structure is paved with asphalt, and comprises an asphalt section Ra including at least a dense-graded asphalt section 1 and a water-permeable asphalt section 2. The dense-graded asphalt portion 1 is located around front wheels Tf of a vehicle C when parked in a parking space P, and the water-permeable asphalt section 2 is located around an entrance and exit D of the vehicle C.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pavement structure of an asphalt-paved parking space.

Conventionally, the pavement structure of a vehicle parking lot has been paved with fine-grained asphalt on the surface to prevent deterioration due to wheel wear, and the surface has a slope toward the drainage ditch to prevent the formation of puddles due to rainwater, etc. board. For example, the parking space for one ordinary car in a general house has a width of about 2.5 m to 3 m and a depth of about 5 m to 6 m, and is 1.5 from the back toward the drainage ditch on the road side (front side). Rainwater was drained into the drainage ditch with a gradient of about% to 2%.

Further, in Patent Document 1, as a pavement structure for an underground parking lot or the like, a dense-grained asphalt layer and a permeable asphalt layer are laminated in order from the top with respect to the ground, and groundwater permeating from the ground is passed through the permeable asphalt layer. The technology for draining water into a spring tank is disclosed. According to this configuration, simply forming a double structure consisting of a dense-grained asphalt layer and a permeable asphalt layer eliminates the need for drainage ditches provided underground, and can be expected to reduce the amount of work and costs in design and construction. That is.

Japanese Unexamined Patent Publication No. 11-107296

The permeable asphalt as shown in Patent Document 1 has more voids than the fine-grained asphalt, so that water can easily permeate the asphalt, but the asphalt is easily worn, so that the durability is lower than that of the fine-grained asphalt. Therefore, it is not easy for a person skilled in the art to use a fine particle size asphalt and a permeable asphalt in combination for pavement on the surface of a parking lot based on Patent Document 1 and known techniques relating to permeable asphalt.

Further, in a place such as a parking lot where the steering wheel of the vehicle is frequently operated, the surface is scraped by the turning of the wheels, so that the permeable asphalt is not suitable. However, if water-permeable asphalt is used, the surface does not have to be sloped, so that the effect of reducing the pavement burden on the parking lot can be expected because it does not depend on the location of the drainage ditch. That is, it is worth using both fine-grained asphalt and permeable asphalt for the pavement on the surface of the parking space.

Then, the inventor paid attention to the relationship between the parking space and the parked vehicle in order to utilize the advantages of both the fine particle size asphalt and the permeable asphalt in combination. That is, of the parking space equivalent to one vehicle, the part where durability should be prioritized and the part where water permeability should be prioritized are separated in consideration of the specifications of the vehicle, and each part is divided into fine-grained asphalt and water permeability. By paving with asphalt, we have reached the point where we can take advantage of both and minimize the drawbacks.

Therefore, an object of the present invention is to provide a pavement structure that utilizes the characteristics of asphalt and the correlation between the parking space and the vehicle, has favorable durability and water permeability for use, and can reduce the construction load as compared with the conventional one. be.

That is, the pavement structure in the present invention is a pavement structure of a parking space, and includes an asphalt portion including a fine-grained asphalt portion and a water-permeable asphalt portion, and the fine-grained asphalt portion is used when parked in the parking space. It is located around the drive wheels of the vehicle, and the water-permeable asphalt portion is located around the entrance / exit of the vehicle.

The vehicle is a front-wheel drive ordinary vehicle, the fine-grained asphalt portion is located on the front side of the vehicle including the drive wheels, and the permeable asphalt portion is on the rear side of the vehicle including the entrance / exit. Is located in.

The fine-grained asphalt portion and the water-permeable asphalt portion are adjacent to each other, and at least the surface portion of the fine-grained asphalt portion and the surface portion of the water-permeable asphalt portion have different colors.

According to the pavement structure according to the present invention, the characteristics of asphalt and the correlation between the parking space and the vehicle are utilized, the durability and water permeability are favorable for use, and the load of construction can be reduced as compared with the conventional one.

It is (a) plan view and (b) side view of the pavement structure in one Embodiment of this invention. It is (a) plan view and (b) front view of another pavement structure in one Embodiment of this invention.

Hereinafter, the pavement structure (hereinafter, also referred to as “main pavement structure”) according to the embodiment of the present invention will be described with reference to FIG. 1. In these figures, for the same part that exists more than once, there is a part numbered only for one part. For convenience of explanation, there is also a part in which a predetermined part or a leader line of this part is shown by a hidden line (broken line). In the description, terms indicating upward, downward, lateral, vertical, horizontal, etc. are basically based on the surface of the pavement structure.

<Premise of main pavement structure>
The main pavement structure is for a parking space for one vehicle parked in a parking lot, but may be used for a parking space for two or more vehicles. The location of the parking lot is, for example, an apartment house, a detached house, or a commercial facility, and includes any facility that requires parking, and the parking space may or may not have a roof. The area of the parking lot and the parking space may be at least suitable for the size of the vehicle and is not limited.

"Vehicles" are ordinary cars, small cars, and light cars stipulated by the Road Traffic Vehicle Law at the time of filing, but depending on the purpose and use of the parking lot, large special cars and small special cars of the same law Alternatively, it may be a large vehicle, a medium-sized vehicle, a semi-medium-sized vehicle, a motorcycle, or a motorized bicycle specified by the Road Traffic Act. "Ordinary vehicles" are defined in Appendix 1 of the Road Transport Vehicle Law Enforcement Regulations, and "ordinary vehicles" can be any of the so-called sedans, wagons, hatchbacks, coupe, one-box, minivans, and SUVs. Often, it includes front-wheel drive, rear-wheel drive, and four-wheel drive.

<Overview of main pavement structure>
As shown in FIG. 1, the main pavement structure is asphalt paved and includes at least a fine-grained asphalt portion 1 and an asphalt portion Ra including a water-permeable asphalt portion 2, and the dense-grained asphalt portion 1 is parked. As the drive wheel of the vehicle C when parked in the space P, for example, it is located around the front wheel Tf, but it may be located around the rear wheel Tr or both, and the water-permeable asphalt portion 2 is the vehicle C. It is located around the entrance D.

According to this configuration, since the dense-grained asphalt portion 1 is paved in a range where the drive wheels relatively turn in conjunction with the steering wheel operation of the vehicle C, deterioration due to wear is prevented, and the vehicle can relatively get on the vehicle C or ride on the vehicle. Since the water-permeable asphalt 2 is paved in the range where it descends from C, the occurrence of puddles can be prevented, in other words, the asphalt is paved according to the correlation between the parking space and the vehicle, so that the desired durability and water permeability can be realized. If a slope for drainage is not provided on the top, the construction load can be reduced by that amount, and the effect of reducing the frequency and degree of repair work can be expected.

Specifically, the vehicle C is a front-wheel drive ordinary vehicle, the fine-grained asphalt unit 1 is located on the front side of the vehicle C including the front wheel Tf which is the drive wheel, and the water-permeable asphalt unit 2 is the entrance / exit D. It is located on the rear side of the vehicle C including. The front side and the rear side of the vehicle C are the front side (roadway) side or the back side (garage) side of the parking space P, but both may be on the roadway side. The dense-grained asphalt portion 1 may be all or part of the passenger seat on the front side of the vehicle C from the driver's seat and the passenger seat, and the permeable asphalt portion 2 may be from the rear seat or the rear wheel Tr of the entrance / exit D. It may be all or part of the rear of the vehicle C.

According to this configuration, it is possible to provide a pavement structure of a parking space suitable for a front-wheel drive ordinary automobile, which is generally popular. That is, the dense-grained asphalt portion 1 is less likely to be worn even if the front wheel Tf is intentionally swiveled, and the permeable asphalt portion 2 is less likely to generate puddles around the entrances of the driver's seat, passenger's seat, and rear seat. Not only the deterioration of the pavement structure, but also the effect of reducing the burden of getting on and off in rainy weather can be expected.

Further, the dense-grained asphalt portion 1 and the permeable asphalt portion 2 are adjacent to each other, and at least the surface portion of the dense-grained asphalt portion 1 and the surface portion of the permeable asphalt portion 2 have different colors. In other words, the boundary between the dense-grained asphalt portion 1 and the permeable asphalt portion 2 is flush with each other, and the colors of the surface portions may be the same or similar.

According to this configuration, since it is easy to pave the dense-grained asphalt portion 1 and the water-permeable asphalt portion 2 at about the same time, not only the construction load can be reduced, but also the driver positions the vehicle C with respect to the parking space. Since it becomes easier, it can be parked smoothly, and the effect of reducing the deterioration of the asphalt portion Ra can be expected.

<Details of the main pavement structure>
As shown in FIG. 1, in the main pavement structure, the asphalt portion Ra corresponding to the surface of the parking space and the roadbed Rb below the asphalt portion Ra are laminated on the roadbed Rc corresponding to the ground supporting the pavement. It is a thing. The asphalt portion Ra may be formed of an asphalt mixture, and may be a laminate of a surface layer (not shown) at the top and a base layer (not shown) below the surface layer and above the roadbed Rb, and may have a thickness of about 30 mm to 50 mm. It may or may not have a gradient for drainage.

In general, the "surface layer" is hard to wear, flat and non-slip, and makes it easy for the vehicle to travel, and the "base layer" corrects the unevenness of the roadbed Rb and applies the load applied to the surface layer. The asphalt mixture that uniformly transmits to the roadbed Rb, the "roadbed" suppresses the load within the allowable range of the bearing capacity of the roadbed Rc, and forms the "surface layer" and the "base layer" is the asphalt mixture. It is a mixture of asphalt as a binder, aggregates such as crushed stone and gravel, and fillers such as stone powder and slaked lime in a predetermined ratio. Produced by mixing.

The fine-grained asphalt part 1 and the water-permeable asphalt part 2 are substantially the same as the above-mentioned asphalt mixture, but the water-permeable asphalt part 2 has less fine aggregate among the aggregates and is coarser than the fine-grained asphalt part 1. There is a lot of aggregate, the amount of asphalt used as a binder is small, and the void ratio of the pavement is large. Specifically, water, asphalt, fine aggregate, coarse aggregate, chemical admixture, and hardening adjustment It is a mixture of agents in a predetermined ratio.

<Another pavement structure>
Next, with reference to FIG. 2, a portion different from the pavement structure shown in FIG. 1 described above will be described with respect to another pavement structure according to the embodiment of the present invention, and the description of the equivalent portion will be omitted. Parts or parts equivalent to those shown in FIG. 2 are numbered by adding 100 uniformly in FIG. 1 for easy reference.

As shown in FIG. 2, the dense-grained asphalt portion 100 is located around the front wheels and the rear wheels, which are the driving wheels of the vehicle, and specifically, the range is substantially equal to the width of the vehicle and equal to or larger than the vertical width. It has crossed over. The permeable asphalt portion 200 is located around the left and right entrances and exits of the vehicle, and specifically, is outside the drive wheel of the vehicle C and covers a range equivalent to the vertical width of the fine particle size asphalt portion 100. In other words, the dense-grained asphalt portion 100 is located under the vehicle and in a range substantially equal to the projected area of the vehicle, and the permeable asphalt portion 200 is located on the outside of the vehicle and in a range substantially equivalent to the vertical width. It is located across.

According to this configuration, since the vehicle travels and turns in the fine-grained asphalt section 100, the fine-grained asphalt can be driven regardless of whether the drive wheels of the vehicle are front-wheel drive or rear-wheel drive, and the vertical width of the vehicle is long or short. Since the portion 100 is not easily worn and the left and right entrances of the vehicle are along the water-permeable asphalt portion 200, the effect of easily getting on and off the vehicle even in rainy weather can be expected.

The pavement structure shown in the present embodiment is not limited to the above-mentioned contents, and includes the positions, shapes, and dimensions of all parts and the relationships between the parts as long as the same effect can be obtained.

1,100 ... Dense particle size asphalt part, 2,200 ... Water permeable asphalt part, C ... Vehicle, P ... Parking space, Tf ... Front wheel, Tr ... Rear wheel, D.・ ・ Boarding gate, Ra ・ ・ ・ Asphalt part, Rb ・ ・ ・ Roadbed, Rc ・ ・ ・ Roadbed

Claims (3)

The pavement structure of the parking space
It is provided with an asphalt portion including a dense-grained asphalt portion and a permeable asphalt portion.
The dense-grained asphalt portion is located around the drive wheel of the vehicle when parked in the parking space.
The permeable asphalt portion is a pavement structure located around the entrance / exit of the vehicle. The vehicle is a front-wheel drive ordinary vehicle.
The dense-grained asphalt portion is located on the front side of the vehicle including the drive wheels.
The pavement structure according to claim 1, wherein the permeable asphalt portion is located on the rear side of the vehicle including the entrance / exit. The dense-grained asphalt portion and the permeable asphalt portion are adjacent to each other.
The pavement structure according to claim 1 or 2, wherein at least the surface portion of the dense-grained asphalt portion and the surface portion of the water-permeable asphalt portion have different colors.

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