JPS6030702A - Surface structure of athletic field using artificial turf - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surface structure of a stadium using artificial turf.

In recent years, artificial turf has become popular in many facilities, especially stadiums, due to its ease of management and aesthetic appearance. However, if some parts of the field are left with sandy soil, for example near each base at a baseball field,
The ball bounces irregularly at the boundary between the artificial turf and the old sand, which can interfere with play and even injure players, and improvements have been hoped for. was not found.

The present invention was developed in view of the above-mentioned circumstances, and by providing a transition section at the boundary between the artificial turf and the sandy soil area, the present invention prevents the ball from suddenly changing and bouncing.
The objective is to provide a surface structure for a stadium using artificial turf that can ensure safe play.

In the present invention, artificial turf is stretched over a part of the ground surface of a stadium, leaving a sandy soil area, and the part of the artificial turf that borders the sandy soil area gradually enters into the sandy soil. This structure forms a transition section having a slope of .

The embodiment of the present invention shown in FIG. 2 will be described below in comparison with the conventional example shown in FIG. Note that common parts in both figures are given the same reference numerals.

FIG. 1 clearly shows a conventional artificial turf installation structure, especially near the boundary with the sandy soil area.

To explain this artificial turf laying structure along with its construction method, crushed stone N4 to improve water drainage is installed on the ground 6 of the ground that has been scraped to a predetermined depth, and then asphalt is placed on the area A where the artificial turf 1 is to be laid. An asphalt concrete layer 3 mixed with concrete is hardened, then a cushion material 2 is stretched, and finally an artificial turf 1 is stretched thereon. On the other hand, in the sandy soil area B where no artificial turf is to be stretched, sandy soil is deposited on the crushed stone layer 4 until it reaches the same level as the artificial turf 1 (FIG. 5, part 5). Therefore, area A of artificial turf
The structure of the sandy area B changes rapidly at the boundary between the two areas, and the ball bounces at this point becomes irregular.

On the other hand, in the embodiment of the present invention shown in FIG. 2, the above-mentioned transition portion C is provided in the portion where the artificial turf forms a boundary with the sandy soil region B.

The structure of artificial turf area A and sandy soil area B is as follows.
Since this is the same as the conventional example described above, the explanation will be omitted.

Transition area C is a horizontal area between artificial turf area A and sandy soil area C.
At the boundary between the artificial turf 1" and the sandy soil, an appropriate area of artificial turf 1" is laid down with a slope so that it gradually penetrates into the sandy soil.In order to give the artificial turf 1" the above slope, an asphalt concrete layer 3 '' is hardened with an inclined upper surface, and a cushioning material of 2 degrees is stretched on the upper surface to form the base part S for the artificial turf 1'.The transition part C is shown in Fig. 3. As can be seen in detail, sand 5' is inserted between each grass piece 11' of artificial turf 1', and the amount of sand gradually increases from the side closer to area A of the artificial turf described above. On the side closer to the sandy soil area B, the tip of the grass-like piece 11' has reached the point where it is hidden in the sandy soil.

If such a transition area is provided, the ground conditions will not change suddenly, eliminating irregular bounces of the ball, and preventing players from getting caught in gaps in the artificial turf and falling over. Safety can be ensured.

Furthermore, in a stadium with a sandy soil area 5 as described above, when hosting other types of competitions, the entire stadium is artificially constructed by replacing the sandy soil area with artificial turf with a foundation that has the same structure as the surrounding artificial turf area. It is often used as grass. In such a case, the present invention:
As shown in Fig. 3, by making it possible to take out 1° of artificial turf stretched on the foundation part S consisting of asphalt concrete 3' and cushion 2' in the transition part C as one block, it is possible to remove the artificial turf as one block. It will be possible to convert the stadium to a full-scale artificial turf stadium.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional artificial turf covering structure for stadiums;
The figure is a cross-sectional view of an artificial turf covering structure according to an embodiment of the present invention, and FIG. 3 is an enlarged cross-sectional view of the vicinity of the transition portion C shown in FIG. 2.

Claims (2)

[Claims] (1) Artificial turf is laid on the ground surface of the stadium, leaving a sandy soil area in a part of the ground surface, and the part of the artificial turf that borders the sandy soil area gradually enters into the sandy soil. A stadium surface structure using artificial turf that forms a sloped transition area. (2) Claim f, characterized in that the artificial turf in the transition area is removable together with its foundation.
Surface structure of a stadium using artificial turf as described in 1).