JPH0614201U - Overhang walkway block and overhang walkway structure using it - Google Patents

Abstract

(57) [Summary] [Purpose] Widening the sidewalk with good workability even in places where it is difficult to widen the sidewalk by embankment. [Constitution] It is composed of a main body block 2 and a weight block 3. In the main body block, a standing wall 6 is erected on the outer end portion of the weight mounting plate 5, and a sidewalk plate 7 is protruded outward at the upper end of the standing wall 6. The weight block 3 is fixed to the weight mounting plate 5 of the main body block 2 in a mounted state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an overhanging sidewalk block capable of widening the sidewalk with good workability even in a place where it is difficult to widen the sidewalk by embankment, and also relates to an overhanging sidewalk structure using the same to prevent freezing. is there.

[0002]

[Prior art]

 In order to protect pedestrians from traffic accidents in view of the increase in traffic accidents and the seriousness of traffic congestion in recent years, road widening work has been started to provide sidewalks on the side of the roadway. In particular, as a road widening method for forming a sidewalk at the edge of a roadway formed higher than the surroundings, for example, a method disclosed in Japanese Patent Publication No. 63-19642 is proposed.

The widening method uses a foundation block in which a sidewalk plate projects outward from the upper end of a standing wall standing on the outer edge of the bottom plate, and the bottom plate is made to project the sidewalk plate outward. And place them on the foundation concrete to form a parallel body of foundation blocks. After that, fresh concrete is placed on the bottom plate row as appropriate, and solid concrete is solidified to form a heavy stone portion on the bottom plate.The weight of this heavy stone portion and the earth pressure of the backfilled soil contribute to this. The purpose was to prevent the foundation block from tilting due to the load applied to the sidewalk board.

[0004]

[Problems to be solved by the device]

 However, in such a conventional structure, since the heavy stone part is constructed by on-site construction including the work of arranging the bar and placing the concrete, the work is complicated and requires a lot of time and labor. There was a problem that caused rise. In addition to the large amount of time and effort required to cure the concrete, it took a long time to construct the sidewalks, and there was also the problem of obstructing traffic in places with heavy traffic. . A first object of the present invention is to provide an overhanging sidewalk block that can solve such problems by eliminating the need for on-site construction.

A second object of the present invention is, when the weight portion is constructed by on-site construction as described above, the weight portion in a continuous state prevents drainage under the roadbed and the underground portion under the roadbed is blocked. Given that water is likely to accumulate and there is a concern that road damage will occur due to the road surface frost heave phenomenon in cold regions, the purpose of the present invention is to provide a projecting sidewalk structure that can solve this problem.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention adopts the following means. That is, the overhanging sidewalk block 1 according to the present invention includes a main body block 2 in which a sidewalk board 7 is projected outward from an upper end of a standing wall 6 standing upright on the outer end of a weight table 5 and the main body. The block 2 is composed of a weight block 3 which is fixed to the weight mounting plate 5 of the block 2 in a mounted state.

The weight block 3 may be fixed to the weight placement plate 5 in a state of connecting the adjacent weight placement plates 5 and 5 formed by juxtaposing the main body blocks.

The weight mounting plate 5 of the main body block 2 may be configured to have a tapered trapezoidal plate shape whose width decreases from the outer end to the inner end.

The preferred embodiments of the overhanging sidewalk structure using the overhanging sidewalk block 1 according to the present invention are as follows. That is, in the overhanging sidewalk structure, the main body block 2 arranged in parallel on the foundation concrete 17 formed at the bottom of the excavation portion has the sidewalk board 7 protruding outward so that the weight placement board 5 is the foundation concrete. The weight blocks 3 are fixed on the weight-bearing plates 5, and the weight blocks 3 are fixed on the weight-loading plates 5. Adjacent weight blocks are arranged at required intervals. The excavation part is backfilled so as to cover the upper part of the block, and a pipe 18 for collecting and draining is buried along the inner edge of the weight placement plate 5 at the bottom part of the backfill part.

[0010]

[Action]

 However, when forming a sidewalk on the edge of a roadway that is formed higher than the surroundings, the edge of this roadway is excavated by the required width to form the basic concrete 17 at the bottom, and then the main block 2 Place the weight plate 5 with the sidewalk plate 7 protruding outward. After that, the weight block 3 is placed on the weight placing plate 5 to fix them. The weight block 3 should be of a weight that can prevent the main body block from tilting in consideration of the top load and the unexpected load applied to the sidewalk board 7.

The weight block 3 is placed in a state of being bridged between the adjacent weight placement plates 5, 5 formed by juxtaposing the main body blocks, and both side edges of the weight block are the edges of the weight placement plate. When fixed to the parts, the weight block also functions as a connecting member that connects the main body blocks to each other.

Particularly when the weight placement plate 5 is formed on a trapezoidal plate, the side end faces 27, 27 of the weight placement plate 5 are brought into contact with or close to each other as shown in FIG. By arranging the blocks in parallel, it is possible to curve the sidewalk comfortably according to the curve of the road.

In the overhanging sidewalk structure in which a required space is provided between the adjacent weight blocks, the rainwater that has permeated the backfill portion of the weight blocks can permeate between the weight blocks, and the drainage pipe 18 It will be possible to collect and discharge this rainwater promptly.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, an overhanging sidewalk block 1 according to the present invention comprises a main body block 2 made of concrete and a weight block 3 made of concrete.

In the main body block 2, a standing wall 6 is erected on the outer end of a trapezoidal plate-shaped heavy stone placing plate 5 having a taper whose width decreases from the outer end to the inner end. A sidewalk board 7 is provided so as to project outward at the upper end. Inserts 9 are embedded at the base end side, the tip end side, and the middle part of the left and right side portions of the upper surface of the weight mounting plate 5 so as to be aligned in the projecting direction of the sidewalk plate 7. Further, the standing wall 6 and the sidewalk plate 7 are connected by a reinforcing rib 10, and a support 14 (shown in FIG. 2) of a protection fence is erected on the edge portion 11 projecting from the leading edge of the walkway plate 7. There is a mounting hole 12 for mounting.

The weight block 3 has a rectangular parallelepiped shape, and fixing protrusions 13 and 13 are formed on both left and right edges of its lower end so as to be aligned with the left and right inserts. In addition, three bolt holes 15 are provided.

However, when constructing an overhanging sidewalk using the main body block 2 and the weight block 3 as described above, as shown in FIG. 2, the edge of the roadway formed higher than the surroundings is excavated in an L shape. Then, the foundation concrete 17 is formed on the bottom of the excavated portion 16.

Thereafter, the sidewalk plate 7 is projected outward and the weight placement plate 5 is placed on the foundation concrete. After that, the weight block 3 is placed on the weight placement plate 5 with each insert and the bolt hole aligned, and the bolts 15 are inserted and the fixing bolts 19 screwed into the insert 9 are used. , The weight block 3 is fixed to the weight placing plate 5.

Note that the weight block 3 is of a weight that can prevent the main body block 2 from tilting in consideration of an overload, an unexpected load, and the like applied to the sidewalk plate 7. After that, it is backfilled with a water-permeable material such as crushed stone, and the asphalt 20 is laid on the upper surface of the backfilled portion.

A pipe for collecting and draining water (perforated pipe, water permeable pipe, etc.) 18 is buried in the bottom portion of the backfill portion on the inner end side in the direction in which the blocks are arranged in parallel. However, the water inside the backfill portion is collected and drained by the pipe 18 for collecting and draining. In the present embodiment, since a necessary gap is provided between the adjacent weight blocks, the water of the backfill portion that covers the weight blocks passes through this gap portion G and quickly flows into the water collection and drainage pipe 18. Water will be collected and discharged, and the frost heave phenomenon will be effectively prevented in cold regions.

FIG. 3 shows a case where a drainage basin 21 is installed between the standing wall 6 of the main body block 2 and the outer end of the weight block 3 and is guided to the L-shaped side groove 22 provided on the side of the roadway. The collected rainwater is collected in this drainage basin 21 and discharged through a drainage hole 23 provided in the standing wall 6 of the main body block. In this case, when the same main body block and weight block as in the above embodiment are used, the weight block is placed in a state of protruding inward of the weight placing plate, and the two inserts on the inner side are placed. Use to fix the weight block.

FIG. 4 shows a case where the tree planting 24 is performed in the tree planting portion 25 formed between the standing wall 6 and the outer end of the weight block 3.

FIG. 5 shows another usage mode of the weight block, in which the weight block 3 is placed in a suspended state on the weight loading plates 5 and 5 adjacent to each other formed by the main body blocks arranged side by side. At that time, the inserts provided on the opposite side edge portions are aligned with the bolt holes of the fixed projection piece, and the fixed projection pieces 13 and 13 on both sides of the weight block are attached to the edge portions 26 and 26 of the weight placement plate. The case where bolts are fixed in the same manner as above is shown. In this case, the weight block 3 also functions as a connecting member that connects the main body blocks 2 and 2 together.

FIG. 6 shows a case where the main body block 2 shown in FIG. 1 is used to perform a curve construction, and the side end surfaces 27, 27 of the weight placement plate 5 are brought into contact with each other or in a state close thereto. By arranging the main blocks in parallel, the sidewalk can be easily curved to match the curve of the road. The triangular gap portion 29 formed between the sidewalk boards 7, 7 is appropriately reinforced and filled with sidewalk concrete.

[0025]

[Effects of the Invention] Since the present invention constructs an overhanging sidewalk by combining and integrally fixing a main body block and a weight block, it does not require time and effort such as arranging work and pouring fresh concrete. The time-consuming work that was conventionally required can be omitted, the construction efficiency can be improved, and the construction period and construction cost can be shortened. It can also cope with the labor shortage in recent years.

Since the main body block and the weight block are independent, by selecting a weight block of appropriate weight according to the load applied to the sidewalk board and combining this with a specific body block, various types of blocks can be used. An overhanging sidewalk can be easily constructed.

By placing the weight block on the weight placing portion of the main body block separately from the standing wall, a drainage facility may be provided between the standing wall and the weight block, for example, as shown in FIG. It is also easy to provide a tree planting part as shown in FIG.

By constructing the weight block so that the weight block can be fixed in a state of being bridged between the weight loading plates adjacent to each other, it is possible to connect the weight loading plates to each other by placing and fixing the weight blocks. The work of connecting the main body blocks to each other can be saved.

Particularly, when the weight mounting plate is formed in a trapezoidal plate shape with a taper, the side blocks of the weight mounting plate are brought into contact with each other or close to each other, and the main body blocks are arranged side by side. It is possible to curve the sidewalk comfortably according to the curve of the roadway.

In the overhanging sidewalk structure according to the present invention in which a required space is provided between the adjacent weight blocks, rainwater that has permeated the backfill portion above the weight blocks can be permeated between the weight blocks. In addition, the underground water can be quickly collected and discharged by the drainage pipe, and in cold regions, road damage due to frost heave phenomenon can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an overhanging sidewalk block according to the present invention.

FIG. 2 is a cross-sectional view illustrating an overhanging sidewalk structure constructed using an overhanging sidewalk block.

FIG. 3 is a cross-sectional view showing a case where a drainage basin is installed between a standing wall of a main body block and a weight block in constructing an overhanging sidewalk.

FIG. 4 is a cross-sectional view showing a case where a tree is planted in a tree planting portion formed between the standing wall of the main body block and the weight block when the overhanging sidewalk is constructed.

FIG. 5 is a perspective view showing a state in which adjacent weight placing plates are connected to each other by weight blocks.

FIG. 6 is an explanatory diagram illustrating a procedure for performing a curve construction using the overhanging sidewalk block shown in FIG. 1.

[Explanation of symbols]

 1 Overhang sidewalk block 2 Main body block 5 Pumice stone placing plate 6 Standing wall 7 Sidewalk plate 17 Foundation concrete 18 Pipe for collecting and draining

Claims (4)

[Scope of utility model registration request] 1. A main body block (2) formed by projecting a sidewalk plate (7) outwardly at the upper end of a standing wall (6) standing on the outer end of a weight block (5), and a weight block plate of the main block (2). 5 is a concrete overhanging sidewalk block, which is composed of a weight block 3 fixed to be placed on the side 5. 2. The tension block according to claim 1, wherein the weight block 3 is fixed to the weight placement plate 5 in a state of connecting adjacent weight placement plates 5, 5 formed by juxtaposing the main body blocks. Departure block. 3. The overhanging sidewalk block according to claim 1, wherein the weight mounting plate 5 of the main body block 2 has a tapered trapezoidal plate shape whose width decreases from the outer end to the inner end. 4. An overhanging sidewalk structure using the overhanging sidewalk block according to claim 1, 2 or 3, wherein the main body block 2 provided in parallel on the foundation concrete 17 formed at the bottom of the excavation portion, The sidewalk plate 7 is projected outward, and the heavy stone placing plate 5 is placed on the basic concrete 17, and the heavy stone block 3 is fixed on each of the heavy stone placing plates 5, and Adjacent weight blocks are arranged at required intervals, and the excavation part is backfilled so as to cover the upper part of the weight block, and the bottom part of the backfill part is along the inner edge of the weight placement plate 5. Collection and drainage pipe 1
The overhanging sidewalk structure is characterized in that 8 is buried.