JP6006667B2 - Dirt Course Baba Construction Method - Google Patents

Description

The present invention relates to a construction method for a dirt course Baba .

  Conventionally, from the viewpoint of anti-slip and landscape pavement, the surface of the pavement is provided with unevenness. Patent Document 1 describes that irregularities are formed on a surface of an asphalt by fixing a rough stone, sand, aggregate, or the like with an adhesive.

JP 7-119108 A

  However, in the conventional method, it takes time and cost for bonding, and it is necessary to construct on a completed pavement surface. Therefore, the construction is performed at a later date, and the construction period is prolonged and the construction cost is increased.

  Also, in sports fields such as Baba, a pavement structure in which a surface layer is laid on a pavement, which is a pavement, is adopted. It is desired to form irregularities on the surface of the roadbed.

The present invention has been made in view of the aforementioned circumstances, and an object thereof is to provide a Datokosu construction method of Baba capable of forming irregularities on the surface of the base course by a simple step.

In order to solve the above-mentioned problem, the method for constructing a dirt course Baba according to the present invention is a step of disposing an uneven transfer material made of single grain sand or coarse sand on a substantially flat surface of an upper roadbed before finishing rolling, which is improved soil. And forming the unevenness based on the uneven transfer material on the surface of the upper layer roadbed by applying finish rolling to the upper layer roadbed on which the uneven transfer material is disposed, and the upper layer roadbed after the finish rolling Removing the concavo-convex transfer material from the surface, and laying a surface layer body of single grain sand on the upper roadbed from which the concavo-convex transfer material has been removed.

According to such a configuration, a dirt course Baba having an uneven surface on the upper layer roadbed can be obtained by simple steps that do not require adhesion.

In addition, the method of constructing the dirt course Baba of the present invention includes a step of arranging a surface layer as an uneven transfer material that is single-grained sand on a substantially flat surface of the upper roadbed before finishing rolling, which is improved soil ,
By applying a compaction finishing the base course of the surface layer member is disposed on the surface of the base course, and forming irregularities based on the irregularities transfer material, a single on the base course of finishing rolling depressurizing And further laying a surface layer body of grain sand .

According to such a configuration, since the surface layer body is used as the uneven transfer material, it is not necessary to remove the uneven transfer material, and a dirt course raceway having an uneven surface on the upper roadbed can be obtained in a simpler step.

According to the present invention, irregularities can be formed on the surface of the upper layer roadbed of a dirt course in a simple step.

(A)-(d) is sectional drawing for demonstrating the construction method of the pavement which concerns on the reference form of this invention. (A)-(c) is a top view which shows the example of the pavement which concerns on the reference form of this invention. It is a figure which shows the case where the pavement which concerns on the reference form of this invention is applied to an attachment road, (a) is a top view, (b) is sectional drawing. (A) ~ (e) are cross-sectional views for explaining a method of constructing pavement structure or the dirt course Baba according to a first embodiment of the present invention. (A) ~ (d) are cross-sectional views for explaining a method of constructing the second pavement structure or the dirt course Baba according to an embodiment of the present invention.

Reference embodiments and embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same number is attached | subjected to the same element, and the overlapping description is abbreviate | omitted. In addition, the unevenness | corrugation in each figure is drawn with emphasis, and is not an exact dimension.

<Reference form>
First, a pavement construction method according to a reference form will be described. The pavement construction method according to this embodiment is a method of constructing a road using asphalt.

First, as shown in FIG. 1A, a pavement 11A is laid (pavement laying step). In this reference embodiment , the pavement 11A is a layer of asphalt mixture before finish rolling, and the surface 11a is substantially flat.

Subsequently, as shown in FIG. 1B, the concavo-convex transfer material 12 is arranged on the surface 11a of the pavement 11A before the finish rolling (concavo-convex transfer material arrangement step). Here, the uneven transfer material 12 is for forming unevenness on the surface 11a of the pavement 11A, and has a particle size smaller than the maximum particle size (for example, 13 mm top) of the inclusions in the asphalt mixture layer. Aggregates (fine aggregate, coarse aggregate) and the like. As the aggregate of this reference form , single grain sand, coarse sand, crushed stone, and the like can be used. For example, the operator can dispose the uneven transfer material 12 by spraying the uneven transfer material 12 using a disperser (not shown).

  Subsequently, as shown in FIG. 1 (b) → FIG. 1 (c), finish rolling is applied to the pavement 11A on which the unevenness transfer material 12 is arranged to obtain a pavement 11B after finish rolling (finish rolling). Pressure step). The operator can perform finish rolling using the roller 2. The uneven transfer material 12 is pressed against the surface 11b of the pavement 11B by finish rolling, and forms an uneven surface 11c on the surface 11b.

  Subsequently, as shown in FIG. 1D, the concavo-convex transfer material 12 is removed from the surface 11b of the pavement 11B after the finish rolling (concave / transfer material removal step). The operator can remove the concavo-convex transfer material 12 by a technique such as water washing or sweeper. In this way, by removing the uneven transfer material 12, a pavement 11B having an uneven surface 11c formed on the surface 11b is obtained. The removed uneven transfer material 12 can be reused after collection.

<Example of construction>
The formation range of the uneven surface 11c in the pavement 11B can be appropriately changed according to the application of the uneven surface 11c. For example, as shown to Fig.2 (a), the structure by which the uneven surface 11c is formed over the whole surface of the pavement 11B which is a road may be sufficient. In this case, the slip prevention by the uneven surface 11c is suitably exhibited.

  Moreover, as shown in FIG.2 (b), the structure by which the uneven surface 11c and the flat surface 11d are alternately arrange | positioned in the vehicle advancing direction of the pavement 11B which is a road may be sufficient. In this case, the anti-slip by the uneven surface 11c is suitably exhibited, and the driver of the vehicle can be alerted to a curve or the like by switching between the uneven surface 11c and the flat surface 11d.

  Moreover, as shown in FIG.2 (c), the structure by which designs, such as a character and a figure, are formed in the pavement 11B which is a road by the uneven surface 11c may be sufficient. In this case, the landscape of the road can be improved by configuring the landscape pavement by the light reflectance being different between the uneven surface 11c and the flat surface 11d.

  Further, as shown in FIGS. 3A and 3B, the pavement 11B is applied to the attachment road 23 which is an inclined surface connecting the farmland 21 and the main road 22, and the uneven surface 11c is formed over the entire surface of the attachment road 23. It may be configured. In this case, the slip prevention by the uneven surface 11c is suitably exhibited on the attachment road 23 which is a steeply inclined surface.

The pavement construction method according to the reference embodiment of the present invention can provide a pavement having irregularities on the surface in a simple step that does not require adhesion.
Moreover, since the construction method of the pavement which concerns on the reference form of this invention forms an unevenness | corrugation on the surface using finishing rolling, the pavement which has an uneven surface on the surface can be obtained in a short construction period.

<First embodiment>
Subsequently, the pavement construction method according to the first embodiment will be described with a focus on differences from the reference embodiment . The construction method of the pavement structure which concerns on this embodiment is a method of constructing a dirt course Baba using improved soil.

  First, as shown to Fig.4 (a), 11A of upper-layer roadbeds which are pavements are laid (upper-layer roadbed laying step). The upper layer roadbed 11A is improved soil before finish rolling, and the surface 11a is substantially flat. The improved soil is obtained by mixing cement or lime improver with soil such as pure sand or mountain sand to improve the strength. Below the upper layer roadbed 11A, a roadbed and a lower layer roadbed (layer made of crushed stone) (not shown) are laminated in order from the bottom, and the upper layer roadbed 11A is laid on the lower layer roadbed made of crushed stone.

  Subsequently, as shown in FIG. 4B, the concavo-convex transfer material 12 is arranged on the surface 11a of the upper roadbed 11A before the finish rolling (concavo-convex transfer material arrangement step). Here, the unevenness transfer material 12 is for forming unevenness on the surface 11a of the upper roadbed 11A, and is an aggregate having a particle size smaller than the maximum particle size (for example, 5 mm top) of the inclusion of the improved soil. Fine aggregate). As the aggregate of the present embodiment, single grain sand, coarse sand or the like can be used.

  Subsequently, as shown in FIG. 4 (b) → FIG. 4 (c), finish rolling is applied to the upper layer roadbed 11A on which the uneven transfer material 12 is arranged to obtain the upper layer roadbed 11B after the finish rolling (finish rolling). Pressure step). The uneven transfer material 12 is pressed against the surface 11b of the upper roadbed 11B by finishing rolling, and forms an uneven surface 11c on the surface 11b.

  Subsequently, as shown in FIG. 4D, the concavo-convex transfer material 12 is removed from the surface 11b of the pavement 11B after the finish rolling (concave transfer material removal step). In this way, by removing the uneven transfer material 12, a pavement 11B having an uneven surface 11c formed on the surface 11b is obtained.

  Subsequently, as shown in FIG. 4E, the surface layer body 13 is laid on the pavement 11B from which the uneven transfer material 12 has been removed (surface layer laying step). The surface layer 13 is, for example, single grain sand having a particle size of 2 mm or less. Thus, by laying the surface layer body 13, the pavement structure 10 having the upper layer roadbed 11B having the uneven surface 11c formed on the surface 11b is obtained.

When the surface of the upper roadbed is flat, there is a risk that the hoof slips on the upper roadbed when the horse runs on the baba and the hoof hits the upper roadbed. Construction method of the pavement structure according to the first embodiment of the present invention (i.e., the construction method of Baba Datokosu), the adhesive is uneven i.e. slip paving a simple step unnecessary decorated pavement structure (i.e., Datokosu 10 ) and an environment that is easy for horses to run is realized.

<Second Embodiment>
Then, the construction method of the pavement structure which concerns on 2nd embodiment is demonstrated centering on difference with 1st embodiment . The construction method of the pavement structure according to the present embodiment is a method of constructing a dirt course Baba using improved soil, as in the first embodiment .

  First, as shown to Fig.5 (a), 11 A of upper-layer roadbeds which are pavements are laid (upper-layer roadbed laying step).

  Subsequently, as shown in FIG. 5 (b), the surface layer body 13 as the uneven transfer material 12 is disposed on the surface 11a of the upper layer roadbed 11A before the finish rolling (thickness transfer material). Placement step). Here, the surface layer body 13 forms irregularities on the surface 11a of the upper layer roadbed 11A and covers the upper layer roadbed 11B after the formation of the irregularities. From the maximum particle size (for example, 5 mm top) of the inclusion of the improved soil Is a single grain sand having a small particle size (for example, 2 mm or less).

  Subsequently, as shown in FIG. 5 (b) → FIG. 5 (c), finish rolling is applied to the upper roadbed 11A on which the surface layer body 13 that is the uneven transfer material 12 is arranged, and the upper roadbed 11B after the finish rolling is performed. (Finish rolling step). The operator can perform finish rolling using the roller 2. The surface layer body 13 that is the uneven transfer material 12 is pressed against the surface 11b of the upper roadbed 11B by finishing rolling to form the uneven surface 11c.

  Subsequently, as shown in FIG. 5D, the surface layer body 13 is further laid on the surface layer body 13 as the uneven transfer material 12 on the pavement 11B on which the uneven surface 11c is formed (surface layer body laying step). Thus, by laying the surface layer body 13, the pavement structure 10 having the upper layer roadbed 11B having the uneven surface 11c formed on the surface 11b is obtained.

Since the pavement construction method according to the second embodiment of the present invention uses the surface layer 13 as the uneven transfer material 12, it is not necessary to remove the uneven transfer material 12, and the unevenness, i.e., slip prevention, can be performed in a simpler step. A pavement structure with pavement (that is, a dirt course raceway) 10 can be obtained, and an environment in which a horse can easily run is realized.

As mentioned above, although the reference form and embodiment of this invention were demonstrated, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably. For example, the pavement construction method according to the reference mode can be applied not only to the roadway but also to the sidewalk pavement construction method. In addition, the pavement structure according to the first and second embodiments , that is, the construction method of the dirt course Baba , as a reference form, the construction method of the pavement structure of sports fields such as baseball fields, soccer fields, rugby fields other than Baba Applicable. In addition, the particle size of the uneven transfer material and the thickness of the arranged uneven transfer material can be appropriately changed according to the particle size of the inclusions (materials) of the pavement and upper roadbed and the shape of the unevenness to be formed on the pavement. For example, the upper limit of the particle size of the uneven transfer material only needs to be smaller than the maximum particle size of the inclusions in the pavement and the upper roadbed, and the lower limit of the particle size of the uneven transfer material is the unevenness to be formed on the pavement. It can be set according to the shape. Moreover, the uneven | corrugated transfer material arrangement | positioning step of this invention also includes the case where the asphalt or improvement soil in which the uneven | corrugated transfer material which consists of aggregates etc. was mixed beforehand is laid. Further, the uneven transfer material may be a mixed material containing two or more kinds of single grain sand, coarse sand, and crushed stone, and can form an uneven surface on the surface of the pavement and upper roadbed by finishing rolling, As long as it can be removed after finishing rolling as needed, it may be other than aggregate.

10 Pavement structure 11A Pavement, upper layer roadbed (before finishing rolling)
11B Pavement, upper layer roadbed (after finishing rolling)
12 Uneven transfer material 13 Surface layer (uneven transfer material)

Claims (2)

A step of disposing a concavo-convex transfer material that is single-grained or coarse sand on a substantially flat surface of an upper layer roadbed before finishing rolling that is improved soil ;
Forming an unevenness based on the uneven transfer material on the surface of the upper layer roadbed by applying a finishing rolling to the upper layer roadbed on which the uneven transfer material is disposed;
Removing the uneven transfer material from the surface of the upper roadbed after the finish rolling,
Laying a surface layer body of single grain sand on the upper layer roadbed from which the uneven transfer material has been removed;
A method for constructing a dirt course Baba characterized by including Arranging a surface layer body as a concavo-convex transfer material, which is single grain sand, on a substantially flat surface of an upper layer roadbed before finishing rolling, which is improved soil ;
Forming an unevenness based on the uneven transfer material on the surface of the upper layer roadbed by applying a finishing rolling to the upper layer roadbed on which the surface layer body is disposed;
Further laying a surface layer body of single grain sand on the upper layer roadbed after finish rolling,
A method for constructing a dirt course Baba characterized by including

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