JP3280600B2 - Drainage structure of permeable pavement road - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for a permeable pavement road for efficiently draining rainwater permeated into the pavement road.

[0002]

2. Description of the Related Art Conventionally, a surface of a concrete containing a floor slab is covered with a waterproof sheet, and a water guide pipe made of a metal spring is provided on a side edge thereof (Japanese Utility Model Publication No. 5-33522, Japanese Patent Laid-Open No. 6-260).
No. 13, JP-A-8-93041) or a water guide tube braided with a heat-resistant resin monofilament is buried, and asphalt or the like is paved from above.

[0003]

However, when a water guide pipe made of a metal spring is buried, since it is pressurized by a pavement such as asphalt, sand and gravel enter into the spring, and the function of the water guide pipe is impaired. There is. Furthermore, since the water guide pipe made of a metal spring does not have a water absorbing power, rainwater may be accumulated on the contrary. On the other hand, in a water guide tube braided with a heat-resistant resin monofilament, penetration of gravel can be prevented by increasing the braid density, but it is the same as retaining rainwater. Further, the compressive deformation strength of the constituent material is lower than that of metal, and the practical range is limited to a diameter of about 5 to 15 mm. In order to solve these problems, a pipe-shaped water pipe with a hardened non-woven fabric has been developed. However, since it is mainly made of a thermoplastic resin, the temperature at the time of pavement such as asphalt is relatively high (about 70 to 150 ° C.). In the case of, due to the pressure at the time of paving, the pipe shape cannot be maintained,
In addition, since it itself is hard and has shape retention properties, it does not require a support material such as a spring, but since it does not have a support material, it has poor flexibility and poor workability on roads other than straight roads, Furthermore, clogging was caused by dust having a particle size of about 70 μm floating in rainwater moving in asphalt, and long-term use was difficult. The present invention has been made in order to solve the above-mentioned disadvantages of the prior art, and is a performance required for a water pipe, taking in rainwater into the pipe while preventing the intrusion of gravel, and has a pressure resistance, Permeable pavement using a water guide tube that has shape retention and flexibility, and is extremely unlikely to be clogged by dust floating in rainwater
It is intended to provide a drainage structure for roads .

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to provide a water-resistant layer
On a paved road with a permeable asphalt layer
A non-twisted fiber yarn or a low-twisted fiber having a turn (T) number of 0 to 30 T / m on the surface of a steel wire spring tube having a diameter of 50 mm or less.
The braided yarn and the high-twisted fiber yarn of 40 to 100 T / m are braided, and a water pipe having a gap of 0.1 to 5 mm between the fiber yarns is formed on a road.
Install along the side edge on the waterproof layer and drain
Connected to the swell, and further permeable asphalt on the conduit.
This is achieved by providing a drainage structure for a paved permeable paved road .

[0005]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a water pipe showing one example of the present invention, 1 is a spring, 2 is a layer braided by fiber yarn, and 5 is a gap of 0.1 to 5 mm. This gap is obtained by combining two or more types of fiber yarns 3 and 4 having different twisting states. Here, two or more types of fiber yarns having different fire yarn states include two or more types of fiber yarns having different numbers of twisted yarns, fiber yarns composed of a combination of fuel yarns and non-combustion yarns, and fiber yarns composed of a combination of fuel yarns and interlaced (non-twisted yarns). And so on. Among them, a fiber yarn composed of a combination of two or more types of fiber yarns having different numbers of twisted yarns, a fuel yarn and an interlace (non-twisted yarn) is preferable, and particularly a combination of an interlace (untwisted yarn) 3 and a twisted yarn 4 as shown in Examples. Fiber yarns are optimal.

[0006] The braided layer 2 is preferably composed of two types of fiber yarns 3 and 4 having different numbers of twists. Here, the two types of fibers having different numbers of twists are defined as 0 to 30 T / turn having less turns. m, preferably 0 to 15 T / m non-twisted yarn or low twisted yarn 3 and high-turn 40 to 100 T / m, preferably 50 to 100 T / m high twisted yarn 4. By using two types of fiber yarns having different twisted yarns, the gap defined by the present invention can be maintained between the fiber yarns. Number of turns (T / m) = K√S
(K: Twisted coefficient, S: Denier) When indicated by the twisted coefficient K, the twisted coefficient of the fiber yarn 3 is preferably 0 to
0.6, more preferably 0 to 0.5, and the twist factor of the fiber yarn 4 is preferably 0.2 to 2, and more preferably 0.3 to 1.5.

[0007] Here, the void means a void formed between the fiber yarns when the water pipe is left standing on a straight line, and is the length of the longest portion of the void, which is within 1 cm ^{2 of} an arbitrary portion of the braided layer. Shows the average value of the voids existing in. The size of the gap is 0.1
５5 mm is important, and when it is within this range,
Clogging due to dust contained in the asphalt can be minimized, and the drainage is excellent.
A more preferable range of the size of the void is 0.3 to 2 mm, and the number of the void is 10 to 80 / cm ² , and more preferably 1 to 80 / cm ² .
It is preferably 5 to 50 particles / cm ² .

The width (L in FIG. 1) of the fiber yarn 3 (untwisted yarn or low twisted yarn) is preferably 2 to 7 mm, and most preferably 3 to 5 mm.
It is. The width of the fiber yarn 4 ( high twist yarn) {1 (ell) in FIG. 1} is preferably 0.5 to 3 mm, and most preferably 1 to 2 m.
m. The width (L) of the fiber width 3 is the width of the fiber yarn 4 ｛1.
(L) is preferably larger than 、, and 1.1 ≦ L / 1
(L) ≦ 10, and further, 1.5 ≦ L / 1 (L) ≦ 8
Satisfaction of the above is preferable because it is possible to minimize the drop of the layer braided by the fiber yarn into the gap between the spring pipes of the water guide pipe, and to impart more excellent drainage. The thickness of the fiber yarn 3 is preferably 30
00-20,000 denier, optimally 4000-150
00 denier, and the thickness of the fiber yarn 4 is preferably 1000 to 10000 denier, and most preferably 2000 to 8
000 denier.

The angle (α in FIG. 1) of the fiber yarn 4 with respect to the center line of the water guide tube is 40 to 70 degrees, and it is specified that the angle is 45 to 60 degrees. It is suitable from the viewpoint of preventing clogging by dust.

[0010] As the fiber material, polyester resin,
Polyamide-based resins, polyolefin-based resins (polyethylene, polypropylene, etc.), polyvinyl alcohol-based resins (vinylon, etc.), polyacrylic resins, and the like are available.
C), which has excellent heat resistance, water resistance, and mechanical strength, and further adheres to the spring tube by heat shrinkage.
A material of about 30% is suitable, and a polyester resin is suitable as such a material. Further, a fiber having a heat-fusing property by heating, a core-sheath composite synthetic fiber made of a modified polyester (a modified polyethylene terephthalate using isophthalic acid) or a olefin resin in a sheath having a core portion of polyester is preferable. The specific conditions of the heat shrinkage and the heat fusion are 100 to 300 ° C. and 0.5 to 3.
5 minutes, preferably 1.0-2.5 at 150-250 ° C
Minute hot air treatment. Due to such heating, the occurrence of displacement between the spring tube and the braided fiber layer is reduced, so that the size variation of the gap between the fiber yarns can be prevented. Further, in the present invention, in order to strengthen the adhesiveness between the fiber yarns and further prevent the fluctuation of the size of the gap between the fiber yarns, or to provide the adhesiveness between the spring and the fiber yarns, an adhesive is used for the spring. It may be preferable to provide the surface or the surface of the braided fiber layer by spraying or dipping. Here, examples of the adhesive include a urethane adhesive, an acetic acid emulsion adhesive,
Acrylic adhesives, nylon cross-linking adhesives and the like are preferably used.

As the spring , a spring made of steel wire having excellent elasticity and pressure resistance is preferably used. The size of this spring is suitably 50 mm or less in diameter. The pitch of the spring tube is 0.5 ~
30 mm, more preferably 1 to 20 mm, is appropriate. By providing a fiber yarn braided layer having a gap of 0.1 to 5 mm on the surface of this spring, while preventing intrusion of gravel,
It is possible to obtain a water guide tube which is less likely to be clogged with dust and has excellent rainwater intake performance and excellent flexibility performance.

FIG. 2 is a cross-sectional view of a pavement in which a water pipe is buried in the pavement such as the asphalt of the present invention described above. G and 9 are water guide pipes of the present invention. FIG. 3 is a side view of a paved road in which a water pipe is buried,
Reference numeral 10 denotes a drainage cell. Here, the concrete floor slab 7 is composed of a reinforced concrete floor slab, and the waterproof sheet 8 is provided to prevent deterioration of the concrete floor slab. It is made of rubber or soft vinyl chloride resin. The waterproof sheet 8 can be provided slightly upright at the side edge 11 of the road. Rainwater that has passed through the paved road travels along the waterproof sheet to the side edge of the road, enters the water pipe, is collected in a drainage basin, and is discharged from the drainage outlet. The water pipe may be buried at any point on the pavement road, but it is effective to bury it at the side edge of the road as shown in FIG. The water pipe is preferably provided below the pavement as shown in FIG. By burying the water guide pipe of the present invention in this way, it is possible to prevent deterioration of the concrete slab due to rainwater on the pavement road.

[0013] The pavement in the present invention are asphalt pavement having water permeability, as the road, ordinary road, etc. bridges or elevated roads and the like. Next, the present invention will be described more specifically with reference to examples.

[0014]

EXAMPLE 1 A stainless steel wire having a core diameter of 1.2 mm and a spirally wound spring having an inner diameter of 17 mm and a pitch of 3.5 mm was used as a reinforcement, and an interlaced yarn "Yarn denier 6000 denier" (coefficient 0) and 60T were used. / M polyester twist yarn “Yarn denier 4500 denier” (coefficient 0.
89) 2) Both polyester yarns have a shrinkage ratio at 200 ° C. (JIS L1013, 7.15) of 18
%｝ Is a fiber yarn, and a fiber layer is formed by braiding a reinforcing member with a 24-weight braider in which each fiber yarn is alternately arranged by 12 weights, and the inside of a heating cylinder filled with hot air at 200 ° C. is further cooled by 2%. After that, the fiber layer was heated and shrunk by being allowed to pass through for a minute, and was brought into close contact with the spring reinforcing body to obtain a water guide pipe as shown in FIG.
The heating step was provided at an intermediate portion of the braiding in the braiding step and a take-up machine that pulled at 1 m / min. The size of the gap between the fiber yarns on the surface of the obtained water pipe was 1 mm, and the number of the gaps was 20 pieces / cm ² . The angle α was 55 degrees.

COMPARATIVE EXAMPLE 1 A stainless steel wire having a core diameter of 1.2 mm and spirally wound at an inner diameter of 17 mm and a pitch of 3.5 mm was used as a reinforcing member, and a polyester interlace "Year Denier 60" was used.
"00 denier" is used as the fiber yarn, and the fiber yarn is
Braided with a 4-weight braider to form a fiber layer, and 2
The fiber layer was heated and shrunk by passing through a heating tube filled with hot air of 00 ° C. for 2 minutes to obtain a water guide tube adhered to the spring reinforcement. In addition, the heating process is performed by the braiding in the braiding process and 1 m
/ Min at the middle of the pulling machine.

Comparative Example 2 A water guide pipe made of a spring in which a stainless steel wire having a core diameter of 1.2 mm was spirally wound with an inner diameter of 17 mm and a pitch of 1.2 mm was produced.

The surface of the concrete slab 7 (reinforced concrete slab) shown in FIG. 2 is covered with a waterproof sheet 8 (rubber).
The water pipes 9 prepared in Example 1 and Comparative Examples 1 and 2 were respectively installed on the side edge portions 11, and asphalt pavement 6 was formed thereon, and after the asphalt was hardened, the cross section was cut to deform the pipe shape and gravel. Was measured. Table 1 shows the results.

[0018]

[Table 1]

Table 1 shows that all of the water pipes of Example 1, Comparative Example 1 and Comparative Example 2 can withstand the actual use in terms of shape retention, but not in terms of the effect of preventing the intrusion of gravel. Example 1 and Comparative Example 1 were compared with Comparative Example 2.
It clearly shows that it is remarkably superior to the water conveyance pipes.

A 40 mm square test tube filled with a test solution in which aluminum hydroxide having a particle size of 70 μm was dispersed in 5% by weight of water was filled to a depth of 50 mm with the water guide tubes of Example 1 and Comparative Examples 1-2 cut into 400 mm. Place at the bottom of the tank, seal one end and take the other end out of the tank while maintaining the test liquid volume.
The amount of waste water per second (every predetermined elapsed time) was measured. Table 2 shows the results.

[0021]

[Table 2]

Table 2 shows that Example 1 does not cause clogging over time and can maintain excellent drainage performance.

[0023]

The water conduit used in the present invention has excellent drainage properties, and effectively protects pavement roads, especially bridges, and efficiently drains rainwater that penetrates, and prevents intrusion of gravel, and furthermore resists pressure. It has properties, shape retention and flexibility, good workability, and does not deteriorate even after embedding. Furthermore, clogging does not occur for a long time due to dust contained in rainwater.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pipe showing an example of a water pipe used in the present invention.

FIG. 2 is a sectional view of a paved road in which a water pipe used in the present invention is embedded.

FIG. 3 is a side view of a paved road in which a water pipe used in the present invention is embedded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spring 2 Layer braided by fiber yarn layer 3 Interlace yarn 4 Twist yarn 5 Air gap 6 Asphalt pavement 7 Concrete floor slab 8 Waterproof sheet 9 Water pipe 10 Drainage rise 11 Side edge of road

Claims (4)

(57) [Claims] 1. A water-permeable asphalt layer is provided on a waterproof layer.
On a paved road, the number of turns (T) is 0 to 30 T / m on the surface of a steel wire spring pipe with a diameter of 50 mm or less.
Fiber yarn or low twist fiber yarn and high twist fiber of 40-100 T / m
A water guide pipe having a gap of 0.1 to 5 mm between the fiber yarns is provided on the waterproof layer along a side edge of a road by braiding the weft.
And connected to the drainage basin,
Drainage structure of permeable pavement road with permeable asphalt
Build. 2. The width (L) of a non-twisted fiber yarn or a low twisted fiber yarn.
Is 2 to 7 mm, and the width (l) of the high twist fiber yarn is 0.5 to 3 mm
And satisfying 1.1 ≦ L / 1 ≦ 10.
The drainage structure of a permeable pavement as described. 3. There is a gap of 0.1 to 5 mm between the fiber yarns.
And, and the number of the voids, is 10 to 80 pieces / cm ²
The drainage structure for a permeable pavement road according to claim 1 or 2 . 4. The installation of a braided fiber yarn with respect to a center line of a water pipe.
4. The method according to claim 1, wherein the setting angle is 40 to 70 degrees.
The drainage structure of a permeable pavement as described.