JPH0735506U - Joint formwork for water-permeable pavement - Google Patents

Abstract

(57) [Summary] [Purpose] Efficiently paving a water-permeable pavement and forming vertical joints. [Structure] The bottom plate 3 is fixed on the roadbed 8 with fixing pins 6 at the vertical joint intervals of the water-permeable pavement 7, and the standing plate 2 is integrally formed with the bottom plate 3, and the vertical joint interval is used as the paving width. The edge formwork 1 of water-permeable concrete to be spread is constructed. After the paving in which the standing plate 2 is buried, it is used as an edge-cutting vertical joint material of the water-permeable pavement 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint formwork for water-permeable pavement, particularly for water-permeable pavement that is used as a frame member when paving concrete to improve the efficiency of the paving work and also functions as a vertical joint after paving. Concerning joint formwork.

[0002]

[Prior art]

 In recent years, various pavements having water permeability have been developed in urban areas for the purpose of returning rainwater to nature. The water-permeable pavement has a pavement made of water-permeable asphalt concrete or water-permeable concrete, and rainwater, etc. permeates the inside of the pavement and the roadbed, and part of it penetrates into the roadbed and inside the pavement and the roadbed. Part of the rainwater that temporarily stays in the can be evacuated to the outside again. In this way, water-permeable pavement has excellent water permeability and allows rainwater to quickly penetrate under the road surface, so the surface runoff of rainwater can be reduced compared to ordinary pavement, and flood flow and public water areas can be reduced. It is possible to suppress the discharge load to the. In addition, the groundwater is well-reserved, which is effective for environmental conservation of vegetation in urban areas such as roadside trees and park greenery.

Among the water-permeable pavement materials, water-permeable concrete known under the trade name “Permiacon” (registered trademark) and the like has a higher porosity and a higher water permeability coefficient than water-permeable asphalt concrete. It is provided. In this way, since water-permeable pavement has many voids in the pavement, it is often used for pavement structures such as parking lots and pedestrian roads in parks, rather than pavement structures for general roads with heavy traffic at present. . Therefore, even in the case of concrete pavement, unlike pavement work on general roads, a small, self-propelled paving machine such as an asphalt finisher can be used for a predetermined area such as a parking lot. It is designed to be operated by turning the area back.

By the way, as an example of placing a thin layer of concrete in a flatly spread portion, there is concrete construction for waterproofing the roof. FIG. 9 is a partial sectional view of the roof slab showing an example thereof. In the figure, a predetermined waterproof layer 51 is applied on the upper surface of the roof concrete slab 50. Further, concrete or mortar of the waterproof presser 52 is placed so as to cover the waterproof layer 51. The waterproof presser 52 is provided with stretch joints 53 vertically and horizontally at a pitch of about 3 m in order to prevent movement caused by thermal expansion and moisture change due to changes in sunshine. An elastic material 54 made of polyethylene foam or the like is arranged on the elastic joint 53. This stretchable material 54 is fixed and held at a predetermined position by a mortar 55 for steadying, and is also used as a mold for placing a waterproof pressing concrete. Naturally, since the steady rest mortar 55 serves as a filling material, it is possible to successively place adjacent areas, which are jointed at predetermined intervals.

On the other hand, since the water-permeable concrete pavement is a type of concrete structure, it is necessary to provide shrinkage joints 60 at predetermined intervals in order to induce cracking due to drying shrinkage of the structure. The construction example is shown in FIG. As shown in the figure, the shrinkage joint 60 in the permeable concrete pavement is a cutter of a predetermined width with a depth of about 1/2 of the pavement thickness in a part of the permeable concrete 62 laid on the roadbed 61. A joint 63 is inserted, a backup material 64 is embedded in the joint 63, and then a predetermined caulking material 65 is filled.

[0006]

[Problems to be solved by the device]

 Since the waterproof pressing concrete shown in Fig. 9 has a thin laying thickness and generates almost no concrete lateral pressure, a supporting material of the above-mentioned steady rest mortar is sufficient, but if there are many expansion and contraction installations, mortar is required. It is not very efficient because it is necessary to put it in various places and it takes time and effort for construction. Therefore, in permeable concrete pavement, etc., in order to lay concrete in a strip shape with a predetermined width, a weir board using steel etc. and a fixing member for reinforcing the weir board are temporarily fixed to the roadbed on the side surface of the pavement part. There is. This prevents the sides of the pavement from collapsing until the concrete reaches a specified strength. For this reason, the weir plate and the fixing member cannot be removed until the concrete has a predetermined strength.Therefore, the asphalt finisher or the like cannot be turned back to drive the concrete continuously to the adjacent portion, and so-called "tooth loss" is not possible. Since the pavement position is skipped during the construction, the paving machine must be moved one by one, which causes a problem of delaying the paving process.

Further, if the water-permeable concrete is divided at a predetermined interval by a plate material such as the elastic material, it is possible to omit forming the shrinkage joint as shown in FIG. 10 after paving, The efficiency of pavement work can be improved.

Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technique, to allow continuous pouring of water-permeable concrete with a predetermined width, and to provide a joint formwork for water-permeable pavement. To do.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is a stand plate which is fixed on a roadbed with a fixing tool at a vertical joint interval of a water-permeable pavement and which is formed integrally with the bottom plate. An end form of water-permeable concrete that is spread evenly as a pavement width is configured to serve as an edge-cutting vertical joint material of the water-permeable pavement after paving in which the standing plates are embedded.

Further, it is preferable to form a communication hole at a predetermined position of the stand plate. Furthermore, it is preferable to form notches at predetermined intervals on the bottom plate.

[0011]

[Action]

 According to the present invention, the bottom plate is fixed on the roadbed with the fixtures at the vertical joint intervals of the water-permeable pavement, and the standing plate is integrally formed with the bottom plate, and the vertical joint interval is used as the paving width. Since the end formwork of the permeable concrete to be leveled is constructed and used as the edge-cutting vertical joint material of the permeable pavement after the pavement in which the standing plate is buried, the end face formwork when the permeable concrete is placed With, it is possible to prevent the shoulder part of the concrete from collapsing, and to omit the jointing process.

Further, since the communication hole is formed at a predetermined position of the stand plate, it is possible to prevent the permeated water from flowing down in the pavement portion and prevent the pavement surface from overflowing, thereby preventing a white flower phenomenon or the like. Not only can it be prevented, but rainwater can be efficiently permeated. Further, since the notches are formed in the bottom plate at predetermined intervals, it is possible to fix the joint form on the roadbed so as to form straight vertical joints while correcting warpage.

[0013]

【Example】

 Hereinafter, an embodiment of a water-permeable pavement joint formwork according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a construction state diagram showing a state in which water-permeable concrete is paved by using a water-permeable pavement joint formwork installed on a roadbed. The water-permeable pavement joint formwork 1 (hereinafter referred to as joint formwork 1) shown in the figure is a bar made of a hard vinyl chloride resin manufactured by extrusion forming an inverted T shape. In the embodiment, the bottom plate 3 is set to have a width of 8 cm, and the stand plate 2 which constitutes a weir plate is set to have a height of 10 cm. The height of the standing plate 2 is preferably determined according to the paving thickness of the water-permeable concrete 7 to be paved on the roadbed 8.

Normally, in permeable concrete pavement, rainwater etc. is temporarily stored in the pavement and then permeates into the roadbed. Therefore, in places where the traffic load is not large, the pavement thickness is determined from the rainfall intensity and the permeability coefficient of the roadbed soil. Preferably. In this case, since it is set to 80 or 100 mm for ordinary sidewalks, parking lots, and building exteriors, it is possible to prefabricate the joint frame 1 with the size of the standing plate that matches this pavement thickness.

In order to fix the joint frame 1, as shown in the figure, a fixing hole 5 (φ12 mm in this embodiment) formed at a predetermined interval in the bottom plate 3 has an L-shaped head portion of a predetermined length. A steel fixing pin 6 provided with a hook is driven and fixed at a predetermined position on the roadbed surface. As the steel fixing pin 6, a standard product manufactured in advance may be used, or a bar material such as a deformed bar may be cut into a predetermined length and used. Since it is used by driving it into the roadbed, any material such as resin can be used as long as it has a predetermined strength against impact. In addition, it is also possible to use a staple-shaped (pin-shaped) fixing pin or the like. As for the thickness of the standing plate 2, as shown in FIG. 1, when the water-permeable concrete 7 is squeezed out to a predetermined thickness by a paving machine such as a finisher and rolled, it is not deformed even by the acting side pressure. It is preferable to set the thickness to about 5 mm, and in this embodiment, the thickness is set to 5 mm. However, since this plate thickness is related to the strength of the resin used, economic efficiency and strength should be considered and set to an appropriate value.

As an example, FIG. 2 is a schematic plan view showing a construction situation of a water-permeable pavement in a parking lot by mechanical construction. As shown in the figure, the joint form 1 is fixed in advance to the roadbed surface 8 through the fixing pins 6 according to the width of the finisher 9, and the finisher 9 advancing in the direction of the arrow forms the material of the water-permeable concrete 7 It is shown to be sprinkled, spread, leveled, and flattened. Normally, in the case of machine construction using a finisher, the vertical joint interval is set to 3 to 5 m, depending on the finisher standard, and the water-permeable concrete 7 is laid at this interval. Note that, in FIG. 2, the joint frame 1 installed for ease of explanation is shown to a large scale with respect to the entire display scale, and construction joints (horizontal joints) are omitted.

Since both ends 7a of the water-permeable concrete 7 paved as shown in FIGS. 1 and 2 are partitioned by the joint form 1, the side surface 7a of the water-permeable concrete 7 cast in a band shape. Is protected by the joint formwork 1 and the concrete does not collapse and is fixed to the roadbed with fixing pins 6, so there is no need for a fixing member that reinforces the weir plate, and immediately next to the strip block 7A immediately after paving. The strip block 7B can be subsequently paved. The permeable concrete 7 as a pavement material can be manufactured in an ordinary concrete plant and is generally transported by a dump truck 10 to the site, but it may be manually constructed depending on the scale of the pavement. In that case as well, concrete may be similarly placed along the set shrinkage joint interval.

3 (a) and 3 (b) show the joint portion of the joint form 1, which can be easily extended by using the joint member 20 shown in FIG. The joint member 20 is made of a hard vinyl chloride resin of the same material as the joint mold 1, and the slit portion 21 corresponding to the plate thickness of the stand plate 2 is inserted into the end 1a of the joint mold 1 (see FIG. )) The joint forms 1 can be easily joined together. It should be noted that the illustration of the fixing holes in the bottom plate 3 is omitted in FIG.

FIGS. 4 and 5 show another embodiment in which the water stored in the pavement partitioned by the standing plate 2 of the joint form 1 is easily moved to the side. In this embodiment, as shown in FIG. 4, communication holes 25 are formed in a part of the stand plate 2 at predetermined intervals. As a result, as shown in FIG. 5, the water W stored between the water-permeable concrete 7A and 7B partitioned by the standing plate 2 can freely flow, and the overflow of permeated water causes efflorescence on the water-permeable pavement surface. It can be prevented from occurring.

6 and 7 show another embodiment in which notches are formed in the bottom plate 3 at predetermined intervals. As shown in FIG. 6, substantially V-shaped notches 26 are provided on both sides of the bottom plate 3 with the stand plate 2 sandwiched therebetween to enhance the flexibility of the bottom plate 3. Conventionally, the joint formwork 1 is set to have a length of about 3 m. Therefore, due to the temperature and sunshine during storage, the entire joint warpage occurs as shown in Fig. 7 (a). There is also a risk of deformation. If the warped joint form 1 is used as it is, there is a problem that the shrinkage joint after pavement is bent, resulting in poor appearance. Therefore, as shown in FIG. 6, fixing the joint formwork 1 to the roadbed while providing a notch 26 in the bottom plate 3 of the joint formwork 1 as shown in FIG. The joint can be installed straight.

FIG. 8A shows an embodiment in which the joint frame 1 is used as an expansion joint by attaching the expansion joint material 30 to the side surface of the stand plate 2 of the joint mold 1. A polyethylene resin foam having a thickness of about 5 to 10 mm is suitable as the expansion joint material 30, and the expansion joint material 30 is attached to almost the entire surface of the stand plate 2. The set joint width can be set according to the expansion joint interval, and the thickness, the one-sided type, or the both-sided type of the expansion joint member 30 can be freely selected according to the set joint width. As a result, as shown in FIG. 8 (b), there is an advantage that a wide joint 66 is formed by a cutter or the like, and the labor for filling the filler 67 such as elastite can be omitted.

In addition, in the actual work, when the placement of the water-permeable concrete is interrupted, it is possible to install a joint form instead of the lateral contraction joint. This makes it possible to eliminate the construction joint.

[0023]

[Effect of device]

 As is apparent from the above description, according to the present invention, when constructing a water-permeable pavement, it can be used as a formwork for machine construction and can be stored as a joint material, so that a good-looking shrink joint can be easily formed. In addition to the construction work, the joint formation work as a post-process can be omitted, and the construction efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of a construction state part showing a state in which water-permeable concrete is paved by using an embodiment of a water-permeable pavement joint formwork according to the present invention.

FIG. 2 is a plan view of a construction state showing a state in which water-permeable concrete is paved by using an embodiment of a water-permeable pavement joint formwork according to the present invention.

FIG. 3 is a partially enlarged perspective view showing a joint portion of a water-permeable pavement joint formwork.

FIG. 4 is a partially enlarged perspective view showing another embodiment in which a communication hole is formed in a part of the stand plate.

5 is a partially enlarged cross-sectional view schematically showing a flow of permeated water in a portion partitioned by the water-permeable pavement joint form frame shown in FIG.

FIG. 6 is a partially enlarged perspective view showing another embodiment in which a notch is formed in a part of a bottom plate.

FIG. 7 is a schematic plan view showing an installed state of the water-permeable pavement joint formwork shown in FIG.

FIG. 8 is a partially enlarged sectional view showing another embodiment in which an expansion joint material is attached to a stand plate.

FIG. 9 is a partially enlarged sectional view showing an example of a stretchable material used for a conventional waterproof waterproof concrete for roof waterproofing.

FIG. 10 is a partially enlarged cross-sectional view showing an example of a conventional shrink joint formed on a surface of a water-permeable pavement by a post-construction process.

[Explanation of symbols]

 1 Joint formwork (joint formwork for water-permeable pavement) 2 Stand plate 3 Bottom plate 6 Fixing pin 7 Water-permeable concrete 25 Communication hole 26 Notch

Claims (3)

[Scope of utility model registration request] 1. A bottom plate is fixed on a roadbed at a vertical joint interval of a water-permeable pavement via a fixing tool, and is a standing plate integrally formed with the bottom plate, and the vertical joint interval is used as a paving width and leveled. A joint formwork for water-permeable pavement, which constitutes an edge formwork of water-permeable concrete and serves as an edge-cutting vertical joint material of the water-permeable pavement after paving in which the standing plate is embedded. 2. A joint frame for a water-permeable pavement according to claim 1, wherein a communication hole is formed at a predetermined position of the stand plate. 3. A joint formwork for a water-permeable pavement according to claim 1 or 2, wherein notches are formed at predetermined intervals in the bottom plate.