JP2021110169A - Sidewalk-roadway boundary block - Google Patents

Abstract

To provide a sidewalk-roadway boundary block that can secure a sufficient weight of a foundation after installation of the sidewalk-roadway boundary block and weight reduction of parts handled at the time of installation and construction of the sidewalk-roadway boundary block.SOLUTION: A sidewalk-roadway boundary block includes: a foundation 2 arranged below a ground or pavement surface; and a curb 3 placed on the foundation and protruding above the ground or pavement surface. The foundation 2 is formed by stacking a plurality of foundation block bodies 2a and 2b in the vertical direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pedestrian road boundary block including a curb that is installed so as to extend to the boundary between the sidewalk and the roadway, and more specifically, to a pedestrian roadway boundary block that reduces the labor of installation and construction.

In recent years, in the national and local governments, to improve the landscape, improve the safety and comfort of the passage space by expanding the effective width of the sidewalk, and traffic due to the collapse of utility poles in the event of a disaster such as an earthquake, tornado, or typhoon. In order to prevent the damage caused by the earthquake, the elimination of utility poles that support the electric wires and cables on the ground is being promoted. As one of the measures to eliminate utility poles, it has been proposed to store the electric wires and cables supported on the utility poles in the pedestrian road boundary block. For example, Patent Document 1 proposes to form a curb in a hollow space so that a power transmission line, a telephone line, a water pipe, or the like can be stored in the hollow space. In Patent Documents 2 and 3, a gutter block (trough) is formed along the boundary as a pedestrian road boundary block, and an insole member that separates an upper space and a lower space along the extending direction is arranged in the gutter block. However, a structure has been proposed in which an electric wire cable is housed in the lower space of the gutter block, and the upper space is a drainage channel on the road. In Patent Document 4, in the pedestrian road boundary block, a trough with a lid for accommodating an electric wire cable and a curb are arranged on the lid of the trough, and a drainage passage is formed in a foundation portion of a lower portion of the curb. The structure has been proposed. Patent Document 5 describes a structure in which a drainage channel is integrally formed on a curb arranged at a boundary of a pedestrian road, and Patent Document 6 describes a structure in which an apron is formed on a curb for the purpose of drainage. ing.

JP 2006-97450 JP 2012-136887 JP 2012-158983 JP 2016-36220 JP 2015-108218 JP 2006-291683

When adopting a method of laying electric wires and cables on the ground or burying them in the ground as one of the measures to eliminate electric poles, pipes such as gas pipes, water and sewage pipes, and drain pipes are already buried in the ground. Therefore, it is desirable that the electric wires and cables can be laid so as not to affect the pipes buried in the ground or to move the pipes. Therefore, in Japanese Patent Application No. 2019-223517, which has not been published at the time of filing the application, the applicant of the present application forms a hollow curb portion protruding above the ground of the pedestrian road boundary block, and arranges an electric wire cable in the space inside the curb stone. Proposed a configuration to do. As schematically depicted in FIG. 3, the pedestrian road boundary block 1 is more specifically a wire cable 4 (s) on a foundation portion 2 buried below the pavement surface. A good) is placed, and a substantially U-shaped curb portion 3 having an opening on the lower side in the cross section is arranged so as to cover the electric wire cable 4. Normally, existing pipes such as gas pipes are not provided under the rim stone, and therefore, according to this configuration, the electric wire cable 4 is arranged without interfering with the existing pipes in the ground. Moreover, since the electric wire cable 4 is arranged in the edge stone portion 3 protruding above the ground, the electric wire cable 4 can be accessed only by removing the pavement portion and removing the edge stone portion 3. This is possible, and an advantage such as easy maintenance of the electric wire cable 4 can be obtained.

In the process of installing the pedestrian road boundary block having a structure in which a curb portion protruding from the ground is placed on the foundation portion arranged under the ground as described above, first, the ground is excavated to form a groove. Then, the foundation part is placed in the groove, and then the curb part is placed on the foundation part (when the electric wire cable is stored in the curb part, the electric wire cable is placed prior to the placement of the curb part. Is placed on the foundation.) In such a configuration, if the foundation part and the curb part are "precast products" manufactured by pouring concrete into a formwork in advance at a factory, they are practically walked in the installation work. Since it is only necessary to place it at the installation site of the road boundary block, the construction period is significantly shortened compared to the case where concrete or cement is hardened on the spot and a curb is installed, and the pedestrian road boundary is quickly set on the road. It is advantageous in that it becomes available. However, when the foundation part and the curb part are precast products, the weight of each part becomes large, so that crane operation and slinging work may be required. In this regard, the foundation of the pedestrian road boundary block may be required to have a sufficient weight so that it will not be destroyed or overturned even if the curb is loaded by a vehicle collision or the like during use. When handling the parts in the crane operation or slinging work, the worker should give special education on the operation of construction machinery (leveling, transportation, loading, excavation) and slinging to hook the wire that lifts the load with the crane. You may need a qualification to work, such as taking a course. In addition, since it is a heavy-duty work, the number of people who can engage in construction is limited, but it is expected that the number of construction workers will decrease and the population will age in the future, so it may be difficult to secure construction workers.

In the present invention, in view of the circumstances related to the construction of the pedestrian road boundary block as described above, the foundation portion in the state where the pedestrian road boundary block is installed is not destroyed or overturned due to a vehicle collision or the like. A new configuration is proposed that has sufficient weight but reduces the weight of individual parts that are transported or moved during the installation and construction of the foundation. Thus, one of the problems of the present invention is to secure a sufficient weight of the foundation after the installation of the pedestrian road boundary block and to handle the parts handled at the time of installation and construction of the pedestrian road boundary block in the above-mentioned pedestrian road boundary block. It is to provide a configuration that enables weight reduction.

According to the present invention, the above-mentioned problem is a pedestrian road boundary block including a foundation portion arranged below the ground and a curb portion placed on the foundation portion and protruding above the ground. The foundation is achieved by a pedestrian road boundary block formed by stacking a plurality of foundation blocks in the vertical direction.

In the above, the "pedestrian road boundary block" is a structure that provides curbs that are arranged and installed along the boundary between the road and the sidewalk on the road, and in the present invention, the "pedestrian road boundary block" is a structure that provides curbs. A "foundation" arranged to extend along the pedestrian road boundary in the ground below the ground or paved surface, and above it, protruding above the ground or paved surface and along the pedestrian road boundary. Includes "curbstones" that are arranged to extend. The curb portion may typically be secured to the top surface of the foundation portion by fastening anchor bolts to the bolt holes in the foundation portion through bolt holes drilled in the edges of the curb portion. Further, the foundation portion and the curb portion may be formed of reinforced concrete. Further, the curb portion is formed in a substantially U shape that opens downward in the cross section, and a hollow space is formed inside the curb portion in a state where the curb portion is placed on the foundation portion, and the hollow space is formed. An electric wire cable, such as a power cable or a communication cable, which was previously supported on a utility pole, may be arranged in this area. The electric wire cable may be a group of cables composed of a plurality of cables.

In such a "pedestrian road boundary block", in the present invention, as described above, the foundation portion is configured by stacking a plurality of "foundation block bodies" in the vertical direction. Here, the foundation block body is a component having each shape obtained by dividing the foundation portion designed in the state where the pedestrian road boundary block is installed into a plurality of parts in the vertical direction. Then, when arranging the foundation portion, one foundation block body may be transported and laminated in order at the place where the foundation portion is arranged. According to this configuration, the foundation block body to be transported is lighter than the foundation portion formed as an integral body, and the crane operation and slinging work as described above are significantly reduced or unnecessary. It is expected. On the other hand, the entire foundation portion formed by laminating the foundation block bodies can be made to have a sufficient weight as the foundation portion of the pedestrian road boundary block.

In the embodiment, all the foundation blocks may be formed in substantially the same shape, and when manufactured as a precast product, they may be manufactured using the same mold (thus, the manufacturing cost). It becomes possible to suppress.). In addition, although each foundation block body has a substantially rectangular shape in the plan view, it is installed at the installation location of the pedestrian road boundary block, and is in the longitudinal direction (extending direction of the pedestrian road boundary) on the upper surface. ), The central region is formed in a convex shape in a cross section protruding above both edges, and on the lower surface, the central region is recessed upward in the longitudinal direction. In this case, it may be formed in a concave shape, and further, the convex shape on the upper surface may be formed so as to fit into the concave shape on the lower surface. According to such a configuration, when stacking the foundation blocks, the convex shape of the upper surface of the foundation block body placed underneath is fitted to the concave shape of the lower surface of the foundation block body placed above. Positioning of the block bodies at the time of stacking is facilitated (the lateral position is automatically determined by fitting the upper surface and the lower surface of the foundation block body), and the laminated state is stabilized. It becomes.

Fixing of the laminated foundation blocks to each other may be achieved by any method. In one embodiment, in a state where the foundation blocks are laminated to form the foundation portion, bolt holes penetrating from the top foundation block body to the bottom foundation block body are provided. By fastening the bolt holes with anchor bolts for fixing the rim stone portion to the foundation portion on the upper surface, the rim stone portion and the laminated foundation block body may be fixed at the same time. In this case, the bolt holes from the top foundation block body to the second foundation block body from the bottom (when the number of stacked foundation block bodies is two, the bolt holes of the upper foundation block body) are screwed. It may be an unengraved through hole, and the bolt hole of the bottom base block body may be engraved. According to such a configuration, fixing of the laminated foundation block body is achieved by fastening the anchor bolts for fixing the curb portion to the foundation portion, which is advantageous in that the installation work is facilitated. When the above bolt holes are provided in the foundation block body to fix the foundation block body, the vertical positioning of the foundation block body is performed so that the bolt holes of the upper and lower foundation block bodies are aligned when the foundation block bodies are laminated. It will be done.

Thus, according to the above-described configuration of the present invention, in the installation and construction of the pedestrian road boundary block, the individual parts to be transported are reduced in weight, but the foundation portion puts a load on the curb due to a vehicle collision or the like. It is expected that the block can be made heavy so that it will not be destroyed or overturned even if it is received. That is, according to the configuration of the present invention, it is possible to simultaneously secure a sufficient weight of the foundation portion after installation and reduce the weight of the parts handled at the time of installation work in the pedestrian road boundary block. Become. It should be understood that the configuration of the present invention may be applied when the electric wire cable is not arranged inside the curb, and even in such a case, it belongs to the scope of the present invention.

Other objects and advantages of the present invention will be apparent from the following description of preferred embodiments of the present invention.

FIG. 1A is a schematic cross-sectional view of the pedestrian road boundary block according to the present embodiment, and FIG. 1B is for explaining the structure of the base portion of the pedestrian road boundary block according to the present embodiment. It is a schematic perspective view. FIG. 2A is a schematic cross-sectional view of the pedestrian road boundary block for explaining the process of installing and constructing the pedestrian road boundary block according to the present embodiment. FIG. 2B is a schematic cross-sectional view showing an example in which the foundation portion of the pedestrian road boundary block according to the present embodiment has more than two laminated foundation blocks. FIG. 3 shows a model of a pedestrian road boundary block in which a substantially U-shaped curb portion having a downward opening in a cross section is placed on the foundation portion so as to cover the electric wire cable mounted therein. It is a cross-sectional view.

1 ... Pedestrian road boundary block 2 ... Foundation part 2a ... Foundation block body (upper side)
2b ... Foundation block body (lower side)
2T ... Convex part on the upper surface of the foundation block 2S ... Concave part of the foundation 3 ... Edge stone part 4 ... Electric wire cable 5 ... Anchor bolt 5a, 5b ... Bolt hole 5s ... Bolt threaded part M ... Mortar

Some preferred embodiments of the present invention will be described in detail below with reference to the accompanying figures. In the figure, the same reference numerals indicate the same parts.

Configuration of Pedestrian Road Boundary Blocks With reference to FIG. 1 (A), the pedestrian road boundary blocks 1 of the present embodiment are arranged along the boundary between the roadway and the sidewalk on the road. In the configuration of the pedestrian road boundary block 1, specifically, the ground or the paved surface (paving) along the boundary between the roadway and the sidewalk, as in the case of the above-mentioned special application as exemplified in FIG. The portion may be due to pavement applied in a normal manner such as asphalt.) A foundation portion 2 is arranged in the ground below the foundation portion 2, and a ground or pavement surface is placed on the upper surface of the foundation portion 2. A curb portion 3 projecting upward may be arranged. As shown in the figure, in the present embodiment, the curb portion 3 has a substantially U-shaped cross-sectional structure that opens downward, and is arranged in contact with the upper surface of the foundation portion 2. A hollow region 3a is formed between the upper surface of the foundation portion 2 and the curb portion 3, and the electric wire cable 4 previously supported on a utility pole such as a power cable or a communication cable is arranged in the hollow region of the curb. May be done. As shown in the drawing, the electric wire cable 4 may be a bundle composed of a plurality of electric wires, and a conduit is laid in a hollow region inside the curb portion 3, so that the electric wire cable 4 extends in the conduit. It may be. To fix the curb portion 3 to the upper surface of the foundation portion 2, the anchor bolt 5 is passed through the bolt hole 5a drilled in the edge of the curb portion 3 and fastened to the bolt holes 5b and 5c drilled in the upper surface of the foundation portion 2. It may be achieved by, but is not limited to this. Typically, the foundation portion 2 and the curb portion 3 may be made of reinforced concrete or the like having reinforcing bars inside so that the foundation portion 2 and the curb portion 3 are not easily moved or damaged even if they come into contact with each other in the installed state. .. Further, the pedestrian road boundary block 1 is prepared in advance at the factory for both the foundation portion 2 and the curb portion 3, and the finished products thereof are transferred to the site where the pedestrian road boundary block 1 is installed, where the pedestrian road boundary block 1 is installed. It may be installed by the method assembled as 1 (precast method). According to the precast method, it is only necessary to install the foundation portion 2 and the curb portion 3 at the installation site of the pedestrian road boundary block 1, which is significantly more than the case where the concrete or cement is hardened on the spot and the curb stone is installed. It is advantageous in that the construction period is shortened and the pedestrian road boundary can be used quickly on the road.

In the above-mentioned pedestrian road boundary block 1, in the case of the present embodiment, as shown in FIG. 1B, the foundation portion 2 is formed by stacking a plurality of foundation block bodies 2a and 2b. (In the case of FIG. 1, the number of layers is 2). As shown in the drawing, the individual foundation block bodies 2a and 2b are substantially plate-shaped members having a substantially rectangular shape in a plan view, and preferably the upper surface has a central portion along the longitudinal direction thereof. It has a convex shape 2T in a cross section protruding upward from both edges, and a concave shape 2S in a cross section in which the lower surface is recessed upward from both edges in the central portion along the longitudinal direction thereof. The convex portion 2T may be fitted into the concave portion 2S. According to this configuration, when the foundation block bodies 2a and 2b are laminated, they are fitted into the concave portions 2S on the lower surface of the foundation block body 2a on the convex portion 2T on the upper surface of the foundation block body 2b placed below. The lateral position of the foundation block body 2a is automatically determined, the laminating work is facilitated, and the laminated state is stabilized.

Further, in the foundation block bodies 2a and 2b, in order to fix them to each other, the bolt holes 5b and 5c may be formed so as to be aligned in a state where the foundation block bodies are laminated. As shown in the figure, the bolt holes 5b and 5c also match the bolt holes 5a in the curb portion 3, whereby a single bolt hole is formed in the bolt holes 5a, 5b and 5c, and the anchor bolt 5 is formed therein. By inserting and fastening, the curb portion 3 and the laminated foundation block bodies 2a and 2b are fixed to each other. Regarding the bolt holes, the bolt holes 5a at the edge of the curb portion 3 and the bolt holes 5b of the foundation block body 2a other than the bottom foundation block body 2b may be unthreaded through holes. On the other hand, the bolt hole 5c of the lowermost foundation block body 2b may be screwed so as to be screwed into the threaded portion 5s at the tip thereof so that the anchor bolt 5 is fastened. The height of the foundation portion 2 may be adjusted by applying an air-kneaded mortar M between the foundation blocks to be laminated.

According to the structure of the foundation portion 2 described above, each foundation block body can be manufactured with a significantly reduced weight, and its transportation and movement are easy, and there is a need for crane operation, slinging work, or heavy reinforcement work. It is advantageous in that it is expected to be reduced. On the other hand, in the state where the foundation portion 2 is installed, a plurality of foundation block bodies are laminated and fixed to each other, and the weight of the entire foundation portion 2 becomes large. It is expected that it will be possible to prevent the blocks from being destroyed or tipping over. As shown in FIG. 2B, the number of foundation blocks stacked to form the foundation portion 2 may be 3 or more. The foundation block body may be manufactured in substantially the same shape (by being manufactured in substantially the same shape, the convex portion 2T on the upper surface of any foundation block body is any foundation block body. It can also be fitted in the recess 2S on the lower surface of the product.) When manufactured as a precast product, it is manufactured using the same mold, whereby the manufacturing cost can be suppressed.

Installation of the pedestrian road boundary block With reference to FIG. 2 (A), in the installation of the pedestrian road boundary block of the present embodiment, after the ground at the place where the block is installed is excavated and a groove is formed, the foundation is formed. The foundation block body 2b placed at the bottom of the part 2 is arranged, and the foundation block body 2a is placed on the foundation block body 2b. At that time, the position of the foundation block body 2a with respect to the foundation block body 2b is determined in the lateral direction by fitting the concave portion 2S of the upper foundation block body to the convex portion 2T of the lower foundation block body, and in the longitudinal direction. Is determined so that the bolt hole 5b is aligned with the bolt hole 5c. Then, when the foundation blocks of the foundation portion 2 are laminated, the electric wire cable 4 is placed on the convex portion 2T of the uppermost foundation block body 2a, and the curb portion 3 covers the electric wire cable 4. It is placed with the opening facing down. Next, the anchor bolts 5 are inserted into the bolt holes 5a on both edges of the curb portion 3 and the bolt holes 5b of the foundation block body on the upper side of the foundation portion 2, and fastened to the bolt holes 5c of the bottom foundation block body 2b. The laminated foundation blocks of the curb portion 3 and the foundation portion 2 are fixed to each other. Thus, when the pedestrian road boundary block 1 is installed, both sides thereof may be paved with asphalt or the like. In such a construction method, as already mentioned, each part of the pedestrian road boundary block 1 is a precast product, so that the pedestrian road boundary block 1 can be installed only by arranging these parts on the spot. The construction can be completed in a short period of time compared to the case where concrete or cement is hardened and a curb is installed.

Although the above description has been made in connection with the embodiments of the present invention, many modifications and modifications can be easily made by those skilled in the art, and the present invention is limited to the embodiments exemplified above. It will be clear that it is not limited and is applied to various devices without departing from the concept of the present invention.

Claims (1)

A pedestrian road boundary block including a foundation portion arranged below the ground and a curb portion placed on the foundation portion and projecting upward from the ground, wherein the foundation portion vertically traverses a plurality of foundation block bodies. Pedestrian road boundary block constructed by stacking on.

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