JP4140949B2 - Mounting structure of narrow water-permeable lid in side groove - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a side groove constructed by arranging a side groove block provided with a water channel along a roadside, a pedestrian boundary, a median strip, etc., and covers a slit-like water guide opening of the side groove. It is related with the attachment structure of the long lid plate made of steel or synthetic resin with water permeability.
[0002]
[Prior art]
Side gutters provided for draining water on the road during rainfall or snow melting are created by burying side gutter blocks with running water channels penetrating in the longitudinal direction along the road side or center of the road, the boundary of the walking path, etc. Built. The side groove block includes an opening for guiding water on the road to the flowing water channel. The U-shaped groove and the gradient variable side groove have a wide opening substantially equal to the width of the flowing water channel, and a water cover called a concrete cover or a grating is usually covered with the opening. On the other hand, a side groove block called a box block or a circular waterway block has an elongated slit-like opening in the longitudinal direction of the road. A concrete lid that covers a U-shaped groove or the like is also provided with a slit-like opening.
[0003]
A cover material having a mesh-plate-like or lattice-like water permeability, which is appropriately called grating, is covered with the water introduction opening provided in the side groove block. The grating covering the narrow opening such as the box block described above is formed by forming the legs by bending down the longitudinal sides of the strip-shaped steel plate with many water holes on the lid surface. A U-shaped cross section is used.
[0004]
FIG. 6 is a cross-sectional view showing a water introduction opening portion of a conventional gutter block equipped with this kind of narrow grating (narrow water-permeable lid). In the figure, 31 is a side groove block made of precast concrete, and a flowing water channel 2 penetrating in the longitudinal direction is formed at the center of the cross section. The water guide opening 33 for guiding the water on the road surface to the water flow path 32 is formed in the upper surface of the block 31 in an elongated shape in a direction perpendicular to the paper surface of the drawing, and a lid receiving portion 34 having a rectangular cross section is formed above the water guide opening. Yes. The lid receiving portion 34 has a narrow water-permeable lid (narrow-width grating) in which both longitudinal sides of the belt-shaped steel plate are bent downward to have a U-shaped cross section and a large number of water-permeable holes 42 are formed in the lid surface. ) 36 is inserted. By mounting such a water flow lid 36, it is possible to prevent an object from falling into the water guide opening 33 or a bicycle wheel or the like from being fitted.
[0005]
Conventionally, the narrow grating in this type of side groove has a structure in which a U-shaped leg portion 41 of the narrow grating 36 is fitted into a lid receiving portion 34 having a rectangular cross section formed in the water guide opening of the side groove block. . However, in such a structure, when the vehicle passes on the grating, the narrow grating 36 jumps up obliquely as shown in FIG. An accident occurred. Therefore, as shown in FIG. 7, the longitudinal ends of the adjacent narrow gratings 36 are connected to each other by the connecting metal fitting 21 to prevent the jumping of the grating.
[0006]
[Problems to be solved by the invention]
In the structure in which the ends of the adjacent narrow gratings are connected to each other, the jumping of the grating can be prevented, but the narrow grating cannot be prevented from floating in the lid receiving portion when a strong external force is applied. . In the conventional structure, a narrow grating with a U-shaped cross section is fitted to the lid receiving part having a rectangular cross section, so that the narrow grating floats when a strong external force is applied because the fixing force is weak. I can't prevent that. In addition, in the case where slit-shaped water guide openings are provided intermittently (not continuously), one narrow grating is fitted to one water passage hole, so that the end of adjacent grating It is not possible to employ a structure in which the members are connected to each other to prevent jumping.
[0007]
Therefore, the present invention realizes a more complete and firm fixation of the narrow grating attached to the water guide opening in the side groove constructed by connecting the side groove block provided with the slit-shaped water guide opening on the upper surface, An object of the present invention is to obtain a narrow grating mounting structure that also serves as a reinforcement against the load acting on the block.
[0008]
[Means for Solving the Problems]
The mounting structure of the narrow water passage lid in the side groove according to the invention of claim 1 that solved the above-mentioned problem is constructed by a side groove block 1 having a slit-like water introduction opening 3 elongated in the road extending direction, In the mounting structure of the water-deck in the side groove where the narrow water-flowing lid 6 provided with a large number of water-flowing holes is mounted in the water-flowing opening, the water-conducting opening 3 is provided with a lid receiving part 4 having an inverted trapezoidal cross section at the top. The side groove block 1 includes a plurality of insertion fittings 5 that are embedded in concrete at both ends so as to cross the water guide opening 3 at a position directly below the lid receiving portion. A leg portion 11 refracted at an acute angle with respect to the surface is provided, and the water-permeable lid is fixed to the fitting 5 by a fastener 7 in a state where the leg portion is fitted to the inclined side wall of the lid receiving portion. That's it.
[0009]
The mounting structure includes a side groove block having the following structure , that is, a slit-shaped water guide opening 3 elongated in the road extending direction, and the water guide opening includes a lid receiving portion 4 having an inverted trapezoidal cross section at an upper portion thereof. A narrow water-permeable lid having the following structure is provided on a side groove block 1 having a plurality of cross-connecting metal fittings 5 embedded in concrete at both ends so as to cross the water introduction opening at a position directly below the receiving portion. That is, in the narrow water-permeable cover for a side groove provided with a leg portion 11 having a large number of water holes on the lid surface and bent at both longitudinal sides downward, the leg portion has an acute angle downward with respect to the lid surface. It is obtained by fixing the narrow water-permeable cover 6 for the side groove that is bent to the side with the fastener 7.
[0010]
The fastener 7 may be a bolt, but a metal plate having a spring property is bent into a C shape or a J shape to form a fastener, and the water passage hole 12 of the narrow grating 6 and the fitting 5 are hooked with this fastener. Various known fastening structures such as a coupling structure and a structure using a toggle-type fastener utilizing a boosting action near the dead point of the lever can be adopted. Depending on the shape, round bars or other shapes can be used.
[0011]
According to the above-described structure of the present invention, the narrow grating 6 is fastened and fixed to the fitting 5 mounted on both ends of the block 1 embedded in the concrete, and the lid receiving part 4 and the narrow grating of the block. Since 6 has an inverted trapezoidal cross section, the fastening force allows the two to fit tightly and without gaps by the action of the wedge, thereby reliably and firmly preventing the narrow grating 6 from moving freely within the lid receiving portion 4. be able to. In addition, since the metal fitting 5 is mounted with both ends embedded in the concrete on both sides of the water guide opening 3, when a large load is applied to the block 1 to narrow or widen the water guide opening 3 due to traveling of a large vehicle, etc. In addition, since the metal fitting 5 serves as a tension member to prevent the deformation of the concrete block, the internal stress of the block is reduced, and therefore it is possible to prevent the block from being damaged by a load and to reduce the weight of the block itself.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to examples shown in the drawings. FIG. 1 is a cross-sectional view showing a mounting portion of a narrow grating, FIGS. 2 and 3 are a side view and a plan view of a side groove block mounted with the narrow grating in the structure of the present invention, and FIGS. It is a figure similar to FIG.2 and FIG.3 about the block for gutters from which a position differs. In the figure, 1 is a side groove block, 2 is a flow channel of the block, 3 is a slit-shaped water flow opening that opens from the flow channel 2 to the top surface of the block, 4 is a lid receiving portion formed in the water flow opening, and 5 is both ends. , Embedded in a block and installed so as to cross the water guide opening 3, 6 is a narrow grating, and 7 is a fastener (bolt).
[0013]
The block 1 includes a flow channel 2 penetrating in the longitudinal direction, and includes a slit-shaped water guide opening 3 elongated in the longitudinal direction of the block communicating from the top of the flow channel to the upper surface of the block. The block 1 is buried with its upper surface as the ground surface, and rainwater on the ground surface flows into the water flow channel 2 through the water guide opening 3. Although the water guide opening 3 may be provided intermittently, the thing of the Example of a figure is provided over the full length of the water flow path 2. FIG.
[0014]
At the upper part of the water guide opening 3, a lid receiving portion 4 is formed in which the opposing wall surfaces are inclined surfaces extending upward. Accordingly, the lid receiving portion 4 has an inverted trapezoidal cross section by making both wall surfaces inclined surfaces in the above direction. At a position directly below the lid receiving portion 4, a fitting 5 that crosses the water guide opening 3 in the width direction is mounted with both end portions embedded in the concrete of the block. When the block 1 is molded, the fitting is provided in the block 1 by being embedded in the block 1 by being set in a mold and pouring concrete. In the middle of the illustrated embodiment, a vertical screw hole 10 is provided at the center. The delivery metal fitting 5 is made of a strip steel material cut to a predetermined length, and is embedded at four locations in the longitudinal direction of the block 1 as shown in FIGS.
[0015]
The narrow grating 6 is provided with a leg portion 11 having both long side portions of a strip-shaped steel plate bent downward at an acute angle, and a plurality of water passage holes 12 elongated in the longitudinal direction of the block are formed on the upper surface (lid surface). Has been. The bending angle a of the leg portion 11 with respect to the lid surface 13 is made to coincide with the inclination angle of the side wall of the lid receiving portion 4 of the block.
[0016]
The insertion metal fitting 5 is disposed at a position opposite to the one provided in the center of the width of the many water passage holes provided in the narrow grating 6, and the water passage hole has a width through which the fastening bolt 7 can be inserted. It is provided with dimensions. A recess 16 for receiving the head 15 of the fastening bolt 7 is formed at a position on the upper surface of the narrow grating 6 that is opposite to the position where the insertion fitting 5 is provided.
[0017]
The narrow grating 6 formed as described above is fitted to the lid receiving portion 4 of the side groove block 1 and the fastening bolt 7 is inserted into the water passage hole at the portion where the recess 16 is provided. It is fixed to the lid receiving part 4 by being screwed into the screw hole 10 of the insertion fitting.
[0018]
When the fastening bolt 7 is fastened, the narrow grating 6 is pushed downward, and the narrow grating is formed by the wedge action between the leg 11 bent at an acute angle and the side wall of the lid receiving part forming an inverted trapezoidal cross section. 6 is fixed to the upper part of the water guide opening 3 with a strong fitting force by a wedge action without a gap between the side wall of the lid receiving portion. Therefore, it is possible to completely prevent the narrow grating 6 from jumping up due to an external force or floating in the lid receiving portion 4.
[0019]
When a vertical load is applied to the upper surface of the block having the water guide opening 3 that opens in a slit shape at the upper part of the flow channel, the moment caused by the load turns the side wall of the block inward, that is, It acts to deform in the direction of narrowing the width. In the structure of the present invention, the end fitting 5 is provided so as to cross the water guide opening 3 in the width direction so that both ends thereof are embedded and fixed in the concrete block. Therefore, when such a load is applied, The insertion fitting acts as a tension member that prevents deformation of the side wall of the block, and reduces internal stress of the block. This action can prevent fatigue failure of the block when a large load is repeatedly applied.
[0020]
【The invention's effect】
According to the structure of the present invention described above, it is possible to surely prevent the narrow grating attached to the side groove from jumping up and moving freely, thereby realizing a firm fixation and reinforcing the side groove block main body. effective.
[Brief description of the drawings]
1 is a cross-sectional view showing an embodiment of a narrow grating mounting structure. FIG. 2 is a side view of a side groove block employing the mounting structure of the present invention. FIG. 3 is a plan view of the block of FIG. FIG. 5 is a side view showing a second example of a block employing the mounting structure of the present invention. FIG. 5 is a plan view of the block of FIG. 4. FIG. 6 is a sectional view showing a conventional narrow grating and its mounting structure. FIG. 8 is a schematic plan view showing a connecting member for narrow grating in a conventional structure. FIG. 8 is a schematic diagram showing jumping of the narrow grating when passing through a vehicle.
DESCRIPTION OF SYMBOLS 1 Block for gutter 3 Water conveyance opening 4 Lid receiving part 5 Interchange metal fitting 6 Narrow width grating 7 Fastener
11 legs

Claims (1)

Constructed with a gutter block (1) having a slit-like water guide opening (3) that is elongated in the direction of the road, and a narrow water cover (6) provided with a number of water holes in the water guide opening. In the mounting structure of the water flow lid of the side groove that is mounted,
The water guide opening (3) is provided with a lid receiving part (4) having an inverted trapezoidal cross section at the upper part, and the side groove block (1) has both ends so as to cross the water guiding opening (3) at a position immediately below the lid receiving part. Provided with a plurality of insertion fittings (5) embedded and mounted in concrete, the water flow lid (6) is provided with a leg portion (11) bent at an acute angle downward with respect to the cover surface, the water flow lid A mounting structure for a narrow water-permeable lid in a side groove, wherein the leg portion is fixed to a transfer fitting (5) by a fastener (7) in a state where the leg portion is fitted to an inclined side wall of the lid receiving portion. .

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