JP6630199B2 - Ground surface temperature controller - Google Patents

Description

  The present invention relates to a ground surface temperature control device for controlling the ground surface of a track (track) of an athletics stadium, and a pipe fixing member for fixing a temperature control pipe below the ground surface, and more particularly, to a straight path and a curved track in the track. And a pipe fixing member which is adaptable even if there is a ridge in an overlapping portion with the above.

  In outdoor athletics stadiums, the surface temperature can reach 60 ° C. or higher in summer, and it has been pointed out that the effects on athletes, such as the feeling of heat and the risk of heat stroke when starting with crouching, have been pointed out. As a conventional general countermeasure, the ground surface is coated with a reflective paint or sprinkled with water, but the reflective paint alone has a small cooling effect, and water sprinkling makes it slippery and affects the game.

In Patent Literature 1, a temperature control pipe is buried in a road or the like. In the summer, cooling is performed by circulating a cooling medium through a temperature control tube, and in winter, heating and snow melting are performed by circulating a heat medium through a temperature control tube.
In Patent Literature 2, the temperature is controlled by burying a plurality of temperature control tubes in a planting place such as a soccer field or a golf course. The ends of these temperature control tubes are connected by a header tube.

JP-A-1-299903 JP-A-2003-61489

  As a countermeasure against a high temperature in the athletics stadium in summer, it is conceivable to arrange a temperature control tube as described in Patent Documents 1 and 2 above and below the ground surface of the track of the athletics stadium to cool (temperature control). In such a case, it is conceivable that a planar pipe fixing member is laid below the ground surface of the runway, and the temperature control pipe is stably fixed by holding the temperature control pipe in a holding portion provided on the pipe fixing member.

  Generally, the track of an athletics stadium is an oval having a straight track and a curved track, and has a gentle slope so as to descend toward an inner infield for drainage. On the other hand, at the start portion at the overlapping portion between the straight road and the curved road, a gentle slope is provided so as to descend toward the outer outfield. Therefore, a ridge is formed in the overlapping portion, and if the pipe fixing member disposed there is flat and hard, the pipe fixing member and thus the temperature control tube become unstable. Although it is conceivable to form only the pipe fixing member of the ridge into a shape bent in accordance with the ridge, the manufacturing cost increases and the construction becomes complicated.

In order to solve the above problems, the present invention is a pipe fixing member for fixing a temperature control pipe below the ground surface of a track of an athletic stadium,
A planar base,
A holding portion provided on the base portion for holding the temperature control tube,
The base portion has flexibility.

When the pipe fixing member is disposed across the inner slope portion and the outer slope portion of the overlapping portion of the straight runway and the curved runway in the runway, the base portion follows the ridge between these slope portions. By being bent and deformed, it is possible to follow both slopes. Thereby, the pipe fixing member can be stably installed below the ground surface of the ridge portion, and thus the temperature control pipe can be stably fixed.
It is not necessary to form the tube fixing member into a shape that is bent in accordance with the ridge portion, thereby suppressing an increase in manufacturing cost.

The base portion of the tube fixing member is preferably flat in a normal state. Here, the normal state refers to a state in which no bending stress due to its own weight, external force, or the like is acting, specifically, for example, a state of being placed on a flat surface.
It is preferable that an arbitrary portion of the base portion of the tube fixing member can be bent and deformed in an arbitrary direction.
The base portion may be at least capable of being bent at an angle formed by an inner slope portion and an outer slope portion of an overlapping portion of the straight running path and the curved running path in the runway. The base portion may have a shape retaining property to the extent that it does not bend and deform so as to greatly exceed the angle. This makes it possible to reliably and stably fix the temperature control tube.

Further, the present invention is a ground surface temperature control device for controlling the temperature under the ground surface of the track of an athletic stadium by a temperature control medium,
A plurality of temperature control pipes buried under the ground surface and through which the temperature control medium passes,
A plurality of tube fixing members having a planar base portion and a holding portion provided on the base portion and holding the temperature control tube,
Wherein the base portion of the pipe fixing member, which is disposed across the inner slope portion and the outer slope portion of the overlapping portion of the straight running path and the curved road in the running path, has flexibility, among the plurality of pipe fixing members. And being bent and deformed in accordance with an angle between the inner slope portion and the outer slope portion.

  ADVANTAGE OF THE INVENTION According to this invention, even if the ridge part is formed in the overlapping part of a straight path and a curved road, the pipe fixing member bends and deforms so as to follow the ridge part, thereby fixing the pipe below the ground surface of the ridge part. The members can be stably installed, and thus the temperature control tube can be stably fixed.

FIG. 1 is a plan view schematically showing an athletics stadium equipped with a ground surface temperature controller according to the first embodiment of the present invention. FIG. 2 is a plan view showing the detailed structure of the ground surface temperature control device in the circle II in FIG. FIG. 3A is a perspective view of the pipe fixing member of the ground surface temperature controller as viewed from above. FIG. 3B is a perspective view of the tube fixing member viewed from below. FIG. 4 is a front cross-sectional view of the runway overlapping portion taken along the line IV-IV in FIG. FIG. 5 is a side cross-sectional view of the runway overlap portion, taken along line VV in FIG. 4. FIG. 6 is a plan view of a runway overlap portion of an athletic stadium equipped with a ground surface temperature control device according to a second embodiment of the present invention. FIG. 7 is a plan view of a track overlapping portion of an athletic stadium equipped with a ground surface temperature control device according to a third embodiment of the present invention. FIG. 8 is a plan view showing the detailed structure of the ground surface temperature controller according to the third embodiment in the circle VIII of FIG. FIG. 9 is a perspective view of a pipe fixing member for a folded pipe section of the ground surface temperature control device according to the third embodiment as viewed from above. FIG. 10 is a perspective view of the tube fixing member for the folded tube portion as viewed from below.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First embodiment>
1 to 5 show a first embodiment of the present invention. As shown in FIG. 1, the embodiment of the present invention is applied to an athletic field 9. The track 91 (track) of the athletics stadium 9 has a pair of straight running paths 94, 94 and a pair of curved running paths 95, 95, and has an oval ring shape. The runway 91 is divided into a plurality of lanes 97 (for example, 7 to 9). At the start of the runway 91 (the lower left side in FIG. 1), the straight runway 94 is extended to form an overlapping portion 96 between the straight runway 94 and the curved runway 95.

  As shown in FIG. 4, the underground under the ground surface of the runway 91 has a laminated structure in which a crushed stone layer 91d, a ground layer 91c, a filling layer 91b, and a surface layer 91a are laminated in this order from the lower side. The underlayer 91c is made of, for example, asphalt concrete, and includes an ascon layer portion 91f having a relatively large particle size and an ascon layer portion 91e having a relatively small particle size laminated thereon. The filling layer 91b is made of, for example, a rubber chip and urethane resin. The surface layer 91a is made of, for example, urethane resin.

As shown in FIG. 5, the runway 91 is inclined so as to drain toward the infield 92 (left side in FIG. 5) for drainage. On the other hand, at the start portion, it is inclined so as to descend toward the outfield 93 (the right side in FIG. 5). Therefore, a ridge 96c is formed at the overlapping portion 96 between the straight running path 94 and the curved running path 95. The infield 92 side of the ridge portion 96c is an inner slope portion 96a that descends toward the infield 92. The outfield 93 side of the ridge portion 96c is an outer slope portion 96b that descends toward the outfield 93. The upper surfaces of the layers 91a, 91b, 91c (91e, 91f) or the boundaries between the layers are inclined as described above.
As shown in FIG. 1, the ridge portion 96 c is along the outermost peripheral edge of the curved track 95 in the track overlapping section 96.

In FIG. 5, the inclination angles of the inner slope portion 96a and the outer slope portion 96b are exaggerated. The actual inclination angle θ _96a of the inner slope portion 96a with respect to the horizontal plane is approximately θ _96a = 0.5 ° to 2.5 °. The inclination angle θ _96b of the outer slope portion 96b with respect to the horizontal plane is approximately θ _96b = 0.5 ° to 2.5 °. The angle formed by these slope portions 96a and 96b, that is, the angle θ _96c (outer angle) of the ridge portion 96c is about θ _96c = 1 ° to 5 °.

As shown in FIG. 1, a track and field stadium 9 is provided with a ground surface temperature controller 1. The ground surface temperature control device 1 includes a header pipe 10, a temperature control pipe 20, and a pipe fixing member 40. The header tube 10 and the temperature control tube 20 serve as a passage for the temperature control medium A, and control the temperature of the runway 91.
Water is used as the temperature control medium A. The temperature control medium A is not limited to water, but may be brine or the like.

The header pipe 10 extends below the ground surface of the fields 92 and 93 so as to be parallel to the track 91. Preferably, the header pipe 10 is mainly piped inside the drain pipe 80 of the in-field 92. Some of the header pipes 10 are piped inside the drain pipe 86 of the outfield 93.
Note that the header pipe 10 may be piped so as to cross the runway 91.

  The upstream end of the header tube 10 on the supply side of the header tube 10 is connected to the delivery port 2a of the chiller 2 (temperature control source). The downstream end of the header tube 10 on the discharge side is connected to the reflux port 2 b of the chiller 2. The downstream end of the supply-side header tube 10 and the upstream end of the discharge-side header tube 10 are each closed.

The installation location of the chiller 2 can be set arbitrarily, and may be, for example, a corner of a stand (audience seat) of the athletics stadium 9 or the like.
The temperature control source is not limited to the chiller 2, and may use underground heat (cold heat or hot heat), or may perform heat exchange using a water tank attached to the athletics stadium 9.

  As shown in FIG. 1, a plurality of temperature control tubes 20, 20,... Preferably, the temperature control tube 20 is embedded in the filling layer 91b. The temperature control tube 20 is made of a resin such as polyethylene, for example, and has flexibility (flexibility). The flow path cross-sectional area of each temperature control tube 20 is sufficiently smaller than the flow path cross-sectional area of the header pipe 10.

Are arranged in the direction in which the runway 91 extends. Each temperature control tube 20 intersects with the direction in which the runway 91 extends at the location where the temperature control tube 20 is arranged. Each of the temperature control tubes 20 of the straight running path 94 of the running course 91 is orthogonal to the straight running path 94. The temperature control tubes 20, 20,... Of the curved track 95 are radially arranged from the inner circumferential side to the outer circumferential side of the curved track 95, and the temperature control tubes 20, 20,. They may be arranged parallel to each other.
The extending direction of the temperature control tube 20 is not limited to the direction intersecting with the extending direction of the runway 91, and may be along the extending direction of the runway 91.

Except for a part, the temperature control tube 20 is a return path having a turn.
The temperature control tube 20 passing through the runway overlap portion 96 is a one-way road without turning back. The plurality of temperature control tubes 20, 20,... Passing through the runway overlap portion 96 constitute a parallel flow with each other.
In FIG. 1, the arrangement intervals of the temperature control tubes 20 are narrow for convenience of drawing, but the temperature control tubes 20 may be densely arranged at small intervals (see FIG. 2).

The upstream end of each temperature control tube 20 is connected to the header tube 10 on the supply side. Further, the downstream end of each temperature control pipe 20 is connected to the header pipe 10 on the discharge side.
The temperature control medium A whose temperature has been controlled in the chiller 2 is distributed from the header tube 10 on the supply side to the temperature control tubes 20, 20,. As the temperature control medium A flows through each temperature control tube 20, the ground surface of the runway 91 is cooled (temperature controlled). The temperature control medium A from the temperature control tubes 20, 20,... Is collected by the header tube 10 on the discharge side and returned to the chiller 2.

As shown in FIG. 2, the temperature control pipe 20 is fixed below the ground surface of the runway 91 by a pipe fixing member 40.
As shown in FIG. 3, the tube fixing member 40 includes a base portion 41 and a plurality of holding portions 42. The base portion 41 has a square (quadrangle) frame shape or a plate shape (plane shape). The base portion 41 is flat in a normal state. A plurality of holding parts 42 are provided at equal intervals along two opposing edges of the base part 41. Each holding part 42 has a pair of holding claws 42a, 42a. As shown in FIG. 2, the temperature control tube 20 is fitted into the holding section 42.

The tube fixing member 40 and thus the base portion 41 have flexibility. Preferably, any part of the base part 41 is bendable and deformable in any direction. The angle at which the base portion 41 can be bent and deformed is at least about the angle θ _96c of the ridge portion _96c (the angle between the inner slope portion 96a and the outer slope portion 96b). The base portion 41 also has a certain degree of shape retention, and it is preferable that the base portion 41 does not bend and deform more than several times the angle θ _96c .
The holding portion 42 has elasticity capable of fitting and holding the temperature control tube 20.
Further, the pipe fixing member 40 has required strength and heat resistance.
Examples of the material of the tube fixing member 40 include resins such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), and acrylonitrile-butadiene-styrene resin (ABS), and preferably ABS. The material of the tube fixing member 40 is not limited to these resins as long as it has required physical properties such as flexibility.

As shown in FIG. 4, the pipe fixing member 40 is disposed on the upper surface of the ascon layer portion 91e (the boundary between the filling layer 91b and the base layer 91c) and is embedded in the filling layer 91b.
A plurality of temperature control tubes 20, 20,... The temperature control tube 20 is inserted and held between the holding claws 42 a of the holding section 42. Thereby, the arrangement interval between the adjacent temperature control tubes 20 can be kept constant.

As shown in FIG. 2, a plurality of pipe fixing members 40, 40,...
As shown in FIGS. 2 and 3, each pipe fixing member 40 is provided with a coupling mechanism 43 to 46 for connecting to an adjacent pipe fixing member 40. More specifically, as shown in FIG. 3A, semicircular plate-like connecting convex pieces 43 and 44 are provided at the corners of the tube fixing member 40. One connecting convex piece 43 and the other connecting convex piece 44 of the adjacent pipe fixing members 40, 40 are vertically overlapped and connected. Further, a male fitting portion 45 having a claw shape and a female fitting portion 46 having a plate-like shape with holes are formed at a peripheral portion of the tube fixing member 40. One male fitting part 45 of the adjacent pipe fixing members 40, 40 is fitted into a hole of the other female fitting part 46.
The tube fixing member 40 has a 180-degree rotationally symmetric shape. Therefore, the pipe fixing member 40 can be installed even in a direction inverted by 180 degrees, and the construction is easy.

As shown in FIG. 3B, a shallow adhesive accommodating groove 47 is formed on the back surface of the tube fixing member 40. An adhesive (not shown) is stored in the adhesive storing groove 47. As the adhesive, a silicone-based adhesive is preferably used. The silicone-based adhesive has good adhesion to the tube fixing member 40 made of ABS, concrete, and the like.
Further, screw holes 41d are formed in, for example, the central portion and four corners of the base portion 41.
Although not shown in detail, the pipe fixing member 40 is bonded to the ascon layer portion 91e below the ground surface of the runway 91 via the adhesive. A screw is driven into the ascon layer portion 91e through the screw hole 41d. Thereby, the pipe fixing member 40 is fixed to the ascon layer portion 91e.
Note that one of the screw and the adhesive may be omitted.

As shown in FIG. 5, the base portion 41 of the pipe fixing member 40 straddling between the inner slope portion 96a and the outer slope portion 96b of the runway overlap portion 96 is bent at the position of the ridge portion 96c according to the angle of the ridge portion 96c. I have. One side of the bent portion of the base portion 41 is along the upper surface of the ascon layer portion 91e on the inner slope portion 96a, and the other side is along the upper surface of the ascon layer portion 91e on the outer slope portion 96b.
Further, the temperature control tube 20 on the tube fixing member 40 is curved in accordance with the angle of the ridge 96c.

When the ground surface temperature controller 1 is constructed in the athletic stadium 9, in the case of a new stadium, as shown in FIG. 4, after laying the upper ascon layer 91 e of the underlayer 91 c, and then on the ascon layer 91 e. The pipe fixing members 40 are arranged side by side. In the case of the existing stadium, the existing surface layer 91a and the filling layer 91b are removed, and more preferably, the pipe fixing member 40 is removed on the remaining ascon layer 91e after removing the upper layer of the ascon layer 91e. Arrange them side by side.
Each pipe fixing member 40 is fixed to the ascon layer portion 91e by the adhesive and the screw. Further, the adjacent pipe fixing members 40, 40 are connected by connecting mechanisms 43 to 46.

Of these tube fixing members 40, the tube fixing member 40 mounted on the ridge portion 96c can be bent and deformed so as to follow the ridge portion 96c as shown in FIG. Thus, the pipe fixing member 40 can be fixed along the ascon layer portions 91e of the inner and outer slope portions 96a and 96b.
It is not necessary to form the pipe fixing member 40 of the ridge portion 96c into a bent shape in accordance with the ridge portion 96c, and it is possible to suppress an increase in manufacturing cost. Further, since the pipe fixing member 40 can naturally follow the ridge 96c simply by placing the pipe fixing member 40 on the ridge 96c, the installation work is easy.

Next, the temperature control pipe 20 is connected. The temperature control tube 20 is fitted into the holding portion 42 of each tube fixing member 40. Thus, the temperature control tube 20 can be stably fixed below the ground surface of the runway 91.
In the runway overlap portion 96, the flexible temperature control tube 20 is curved along the ridge portion 96c. As described above, since the pipe fixing member 40 of the ridge portion 96c is bent in accordance with the angle of the ridge portion 96c, the temperature control tube 20 can be surely curved along the ridge portion 96c. Thus, the temperature control tube 20 can be stably piped also to the ridge 96c of the runway overlap portion 96.
After that, by covering the filling layer 91b, the temperature control tube 20 and the pipe fixing member 40 are buried in the filling layer 91b. Further, a surface layer 91a is laid.

Next, another embodiment of the present invention will be described. In the following embodiments, the same reference numerals are given to the same components in the drawings and the description thereof will not be repeated.
<Second embodiment>
FIG. 6 shows a second embodiment of the present invention. In the second embodiment, adjacent ones of the plurality of temperature control tubes 20, 20,... Passing through the runway overlap portion 96 constitute a counterflow. Two header pipes 10, 10 for supply and discharge are accommodated in drain pipes 80, 86 of the in-field 92 and the out-field 93, respectively.

<Third embodiment>
7 to 10 show a third embodiment of the present invention. As shown in FIG. 7, in the third embodiment, the temperature control tube 20 passing through the runway overlap portion 96 is a reciprocating type having the folded tube portion 22, similarly to the temperature control tubes 20 of the straight runway 94 and the curved runway 95. Has become. In detail, as shown in FIG. 8, a predetermined number of temperature control tubes 20, 20,... The temperature control tubes 20, 20,... Of the temperature control tube unit 29 are mutually fixed in position by a plurality of pipe fixing members 40, 40,. It is preferable that the temperature control tubes 20 and 20 adjacent to the temperature control tube unit 29 form counterflow with each other.

  In the temperature control pipe unit 29, the connecting pipe section 23 between the straight pipe section 21 and the return pipe section 22 of each temperature control pipe 20 extends in the width direction of the temperature control pipe unit 29 toward the return pipe section 22 (FIG. 8). At the left and right). This inclination is larger on the inner circumference side in the temperature control tube unit 29. The pipe fixing member 40 for the connecting pipe part 23 has the same shape as the pipe fixing member 40 for the straight pipe part 21.

  As shown in FIGS. 9 and 10, in the tube fixing member 40 </ b> C for the folded tube portion 22 of the temperature control tube unit 29, a plurality of holding portions 42 are arranged concentrically on the base portion 41. The base portion 41 of the tube fixing member 40C has the same flexibility as the tube fixing member 40 for the straight tube portion 21 and, when disposed on the ridge portion 96c, bends along the ridge portion 96c. Deformable.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, all the pipe fixing members 40 have flexibility, but the present invention is not limited to this. Only the pipe fixing members 40 arranged in the runway overlapping portion 96 have flexibility, The pipe fixing member 40 disposed on the straight running path 94 or the curved running path 95 other than the overlapping portion 96 may be made of a hard material having no flexibility. Further, only the pipe fixing member 40 disposed on the ridge portion 96 of the runway overlap portion 96 has flexibility, and is disposed only on the inner slope portion 96a of the runway overlap portion 96 or only on the outer slope portion 96b. The tube fixing member 40 may be made of a hard material having no flexibility. In short, it is only necessary that the pipe fixing member 40 disposed at least straddling the inner slope portion 96a and the outer slope portion 96b has flexibility.
A heat medium may be used as the temperature control medium A. The ground surface temperature control structure may be used not only as a cooling device but also as a heating device or a snow melting device.

  INDUSTRIAL APPLICABILITY The present invention is applicable to, for example, a cooling system that cools a track (track) of an athletics stadium below the ground surface.

DESCRIPTION OF SYMBOLS 1 Ground surface temperature control apparatus 20 Temperature control pipe 40, 40C Pipe fixing member 41 Base part 42 Holding part 9 Athletic field 91 Runway 92 Infield 93 Outfield 94 Straight runway 95 Curved runway 96 Runway overlap part 96a Inner slope part 96b Outside Slope 96c ridge θ _96c ridge angle

Claims (2)

A ground surface temperature control device that controls the temperature of a runway of an athletics stadium under the ground surface using a temperature control medium,
A plurality of temperature control pipes buried under the ground surface and through which the temperature control medium passes,
A plurality of tube fixing members having a planar base portion and a holding portion provided on the base portion and holding the temperature control tube,
Wherein the base portion of the tube fixing member, which is disposed across the inner slope portion and the outer slope portion of the overlapping portion of the straight running path and the curved road in the running path, is flexible, And a ground surface temperature control device, which is bent and deformed in accordance with an angle between the inner slope portion and the outer slope portion.   The ground surface temperature control device according to claim 1, wherein the angle at which the base portion can be bent and deformed is at least one time and at most several times the angle formed by the inner slope portion and the outer slope portion.

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