JPH0245722B2 - MICHIROMENJUSETSUKOZO - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a road surface snow melting structure used for melting snow falling on roads in areas with heavy snowfall by spraying water.

Conventional technology As shown in Fig. 4, a water supply block 1 having a rectangular cross section is used in a road surface snow melting structure that is conventionally used to melt snow falling on a road surface by spraying water. However, when installed in the excavated groove 2, the distance 3 between both sides of the water supply block 1 and the inner surface of the excavated groove 2 is narrow, and the concrete or mortar used to fix the water supply block 1 in the excavated groove 2 becomes narrow. When pouring concrete, mortar, etc., it is difficult to perform construction, and in some cases, the concrete, mortar, etc. cannot reach the lower end of the excavated trench 2, making the fixation of the water supply block 1 insufficient. Of course, this drawback can be overcome by increasing the excavation width of the excavation groove 2, but this will greatly increase the number of construction steps and make it expensive, so the excavation groove 2 should be formed as narrowly as possible. This is preferable. Furthermore, if the water supply block 1 is formed into a square shape as shown in the drawing of FIG. 4, the wall thickness of the water supply block 1 with respect to the water supply pipe 4 will be significantly different. Although the thickness is large, the wall thickness from both sides to the water supply pipe 4 is thin, and in order to maintain strength, the wall thickness of the water supply block 1 must be determined based on the thin part. This has the drawback of requiring extra materials such as concrete and making the water supply block 1 large and difficult to handle.

Furthermore, conventionally, the connection of adjacent water supply blocks 1 is as follows:
This is done by inserting the protrusion of one water supply block 1 into the recess of the other water supply block 2, but with this method the water supply block 1 can only be connected in a straight direction. The actual installation road surface has slopes and curves, so there are various curvatures and unevenness both in the horizontal direction and in the vertical direction. This cannot be achieved without preparing many types of water supply blocks 1. Furthermore, the uneven fitting between the protrusion and the recessed portion is likely to cause shearing force to concentrate due to lack of flexibility in the fitting portion, which is likely to cause damage.

Furthermore, in the past, the corresponding parts of the connection parts of the water supply block 1 were not provided with any special reinforcement, which combined with the drawbacks of the above-mentioned uneven fitting, to prevent the water supply block 1 from being exposed to the load from the top surface due to the load of automobiles, etc. running on the road surface. The pressing force acts as a shearing force on the fitting portion of the concave and convex portions, which has the disadvantage that the connecting portion of the water supply block 1 is easily damaged due to bending, deformation, etc.

Problems to be Solved by the Invention The present invention attempts to solve the above-mentioned problems, and aims to form a water supply block in a small size using a small amount of material, secure the necessary strength, and install it in an excavation trench with a small width. In this state, fixing concrete, mortar, etc. can be easily filled between the excavated trench and the water supply block, making it possible to securely fix the water supply block and preventing shear forces from concentrating on the connection part of the water supply block. This enables stable use over a long period of time without damage.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention forms a water supply block in which a water supply pipe with a water spray nozzle protruding from the upper surface is inserted and fixed in the axial direction, and both sides of the upper surface have a V-shaped cross section. A water nozzle is opened on the upper end face of this water supply block, and water supply pipes are protruded from both end faces in the axial direction to form a connecting protrusion, and by connecting this connecting protrusion via a connecting joint, the road surface can be cut out. A plurality of water supply blocks are successively installed on the top surface of the foundation material laid at the bottom of the excavated trench, and a pedestal block whose top surface is the same as that of the foundation material is placed at the corresponding part of the connection joint at the bottom of the trench. However, the bottom surface of the end of the adjacent water supply block is placed on the top surface of this pedestal block to prevent deformation of the connecting portion due to a load from the top surface.

Function Since the present invention is configured as described above, in order to install a water supply block in an excavation trench, a basic material such as crushed stone is laid on the bottom of the excavation trench, and a connecting joint of the water supply block is installed at the bottom of the excavation trench. A strong pedestal block made of concrete or the like is placed in the corresponding part so that the top surface is the same as the base material.
Further, the bottom end of the adjacent water supply block is placed on the top surface of this pedestal block. The installation of this pedestal block prevents bending or deformation of the connection parts of the water supply block, which are most likely to be damaged by bending, even when a load is applied from the top surface such as when a car is running. Allows the use of periods.

Furthermore, the connecting protrusions of the water supply pipes protruding from both axial end faces of the water supply block are connected to adjacent connecting protrusions via the connecting joints. Since a connecting joint is used to connect these connecting protrusions, even if there are various curvatures, unevenness, etc. in the plane direction, vertical direction, etc., it is possible to connect within a certain tolerance range, and the parts The number of points is reduced, allowing for quick connection work, and unlike in the case of uneven fitting, there is no flexibility or concentration of shearing force, and it is flexible and prevents damage over a long period of time. possible.

Furthermore, by placing the bottom end of the adjacent water supply block on the upper surface of the pedestal block, the water supply blocks are connected and located in the excavated groove. The water supply block is then fixed by pouring concrete, mortar, etc. into the space formed between the inner surface of the excavated groove and the outer surface of the water supply block. This water supply block has an L-shaped cross section on both sides of the upper surface. Therefore, the top surface of the excavation groove is wide open, and even if the width of the excavation groove is small, concrete, etc. can be poured easily, and the concrete, etc. can be spread all the way to the bottom of the excavation groove. This makes it possible to securely fix the water supply block.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 10 is a water supply pipe, and water nozzles 11 are projected from the upper surface at appropriate intervals, and the water supply block 13 made of concrete is reinforced with reinforcing bars 12. It is inserted and fixed. This water supply block 13 has a protruding flat portion 14 opening the water spray nozzle 11 on its upper end surface, and both sides of the upper surface located on both sides of the flat portion 14 are formed into V-shaped portions 15 having a V-shaped cross section.
In addition, the water supply block 13 has an approximately octagonal cross-sectional shape, and connects the water supply pipe 1 from both end surfaces 16 in the axial direction.
0 protrudes to form a connecting protrusion 17. By connecting the connecting protrusion 17 to the connecting protrusion 17 of the adjacent water supply block 13 via the connection joint 18, the plurality of water supply blocks 13 can be connected to the bottom surface of the excavated groove 21 provided by cutting out the road surface 20. be installed continuously. Furthermore, a basic material 22 such as crushed stone is laid on the bottom of the excavated trench 21 to stably position the water supply block 13. In addition, in the corresponding part of the connection joint 18, there is a pedestal block 23 made of concrete or the like.
is positioned so that its upper surface is flush with the base material 22, and the bottom surface of the end of the adjacent water supply block 13 is placed on the upper surface of this pedestal block 23 to prevent deformation of the connecting joint portion 18 due to a load from the upper surface. It is configured to obtain.

In the structure as described above, in order to install the water supply block 13 in the excavated groove 21 formed by excavating the road surface 20, a basic material 22 such as crushed stone is laid on the bottom of the excavated groove 21. A strong pedestal block 23 made of concrete or the like is positioned at the bottom of the excavated groove 21 at a corresponding portion of the connection joint 18 of the water supply block 13 so that its upper surface is flush with the base material 22. Then, on the upper surface of this pedestal block 23, the bottom surface of the end of the adjacent water supply block 13 is placed. By installing this pedestal block 23, the connection part of the water supply block 13, which is most likely to be damaged due to bending etc. due to the load from the top surface such as when a car is running, is placed.
The snow melting structure can be used for a long period of time without causing shear forces such as bending or deformation.

It also protrudes from both axial end faces 16 of the water supply block 13 and connects the connecting protrusions 17 of the water supply pipes 10 via the connecting joints 18 of the adjacent connecting protrusions 17 . This connection of adjacent water supply blocks 13 uses a connection joint 18 to connect the connection protrusion 17, so that
Even if the bottom surface of the excavated groove 21 has various curvatures, unevenness, etc. in the planar direction, vertical direction, etc., it is possible to connect within a certain tolerance range, reducing the number of parts and quickly connecting. Connection work becomes possible.

Furthermore, after the water supply block 13 is connected and located in the excavation groove 21, concrete is added to the formed interval 24 between the inner surface of the excavation groove 21 and the outer surface of the water supply block 13.
The water supply block 13 is fixed by pouring mortar or the like. Since this water supply block 13 has a V-shaped portion 15 having a V-shaped cross section on both sides of the upper surface, the upper surface of the excavated groove 21 is largely open. Therefore, excavation groove 2
Even when the width of the groove 1 is small, concrete or the like can be poured easily and the concrete or the like can be spread all the way to the lower end of the excavated groove 21. As a result, the water supply block 13 can be securely fixed to the excavated groove 21.

Effects of the Invention Since the present invention is configured as described above, a pedestal block is positioned in the corresponding part of the connection joint of the water supply block, and on the upper surface of this pedestal block,
Since the bottom surface of the end of the adjacent water supply block is placed, the connection part, which is most likely to be damaged by the load from the top surface, is prevented from being bent or deformed, and the snow melting structure can be used for a long period of time.

In addition, since the water supply blocks are connected via a connection joint, it is possible to connect even if the floor surface of the connection part is curved or uneven, reducing the number of connection members and speeding up the connection work. At the same time, it eliminates flexibility as in the case of concave-convex fitting,
There is no concentration of shearing force, and it is flexible and can be prevented from breaking over a long period of time.

In addition, since the water supply block has a V-shaped cross section on both sides of the upper surface, even when the groove width of the excavation trench is small,
To easily pour concrete, etc., to spread the concrete, etc. to the lower end of an excavated groove, and to securely fix a water supply block. Furthermore, by forming the upper surface in a V-shape, the water supply block can be made compact using a small amount of material while ensuring the necessary strength.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Figure 1 is an enlarged axial sectional view of the water supply block in its connected state, Figure 2 is a perspective view of the water supply block, and Figure 3 is a perspective view of the water supply block.
The figure is a sectional view taken along the line AA in FIG. 1, and FIG. 4 is a sectional view of the conventional example. 10... Water supply pipe, 11... Water nozzle, 13...
... Water supply block, 16 ... Both end faces, 15 ... V-shaped part, 17 ... Connection protrusion, 18 ... Connection joint, 2
0...road surface, 21...excavation groove, 23...pedestal block.

Claims (1)

[Claims] 1. A water supply pipe with a water spray nozzle protruding from the top surface is inserted and fixed in the axial direction, and both sides of the top surface are formed into a cross-sectional shape to form a water supply block, and the water supply nozzle is opened on the top end surface of this water supply block, and both end surfaces in the axial direction are inserted and fixed. By protruding water supply pipes from the ground to form connecting protrusions, and connecting these connecting protrusions through connection joints, multiple water supply pipes can be connected to the top surface of the foundation material laid at the bottom of the excavated trench cut out of the road surface. The blocks are installed continuously, and a pedestal block whose top surface is the same as that of the base material is placed at the bottom of the excavation groove at the corresponding part of the connection joint, and on the top surface of this pedestal block,
A road surface snow melting structure characterized in that the bottom surface of the end of an adjacent water supply block is placed to prevent deformation of the connection part due to a load from the top surface.