JPH09125309A - Boundary block and its construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the construction of boundary blocks by providing a leg at the end part of the boundary blocks in longitudinal direction and raising a middle part so as to provide a clearance part with a set surface. SOLUTION: A leg part 2 is provided at one end of a boundary block 1 and projected from the end of the boundary block 1 in longitudinal direction so as to form a step part 3 integrally with a main body block. Also the other end is put on the step part 3 of the boundary block 3 which was set in the previous work along a leveling string 5 so as to provide a clearance part 4 with a set surface. Then the height of blocks is adjusted at the leg part 2 using a wedge 6 so as to arrange and position them sequentially in longitudinal direction, and then a form is set, and concrete is deposited in the form so as to deposit concrete at a time on a leveling concrete layer, a mortar layer on it, and lining concrete layer including a clearance part 4 of the boundary blocks. Thus the leveling concrete constituting a foundation concrete, a height adjusting mortar layer on it, and a lining concrete can be deposited simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boundary block and a method for constructing the same, and more particularly to a boundary precast for a plurality of boundaries (curbs) between roads and roads, median strips, etc. The present invention relates to a concrete block (hereinafter referred to as a boundary block) and a construction method using the same.

[0002]

2. Description of the Related Art Conventionally, in order to form a pedestrian road boundary or curb by a boundary block, a level of water is stretched on a construction surface that is leveled and properly adjusted, and the boundary block is a single unit. It was common to install the mortar by adjusting the height with mortar and setting it accurately along the boundary line with water threads, and filling the joints formed to a width of about 1 cm. From a construction point of view, the conventional method for constructing such a block alone has been inefficient. This inefficiency has been found by the present inventors first by providing a vertical adjustment bolt on the bottom surface of the boundary block to eliminate the need for adjustment mortar.
Proposed in No. 7-150332.

[0003]

DISCLOSURE OF THE INVENTION The present invention intends to provide a boundary block which enables more efficient construction and a construction method thereof by further examining construction after leveling with a water thread and leveling. It is a thing.

[0004]

In the boundary block of the present invention, legs are provided at one or both ends of the boundary block in the longitudinal direction, and the intermediate part is floated to provide a clearance between it and the installation surface. It is a thing. It is used for partitions such as roads, sidewalks, and parking lots, or boundaries between areas or areas. The width is narrow relative to the length, and the length between 61 cm and 244 cm is convenient. However, even in that case, the width is as narrow as 18-21 cm.

A leg is provided at one end of the boundary block, and
The step portion may be integrally formed with the main body block by protruding from the end face in the longitudinal direction, or the step portion may be integrally provided with the main body block at both ends of the boundary block.

Further, the leg portion has a height adjusting bolt which is adjustably screwed into an overhanging step portion provided at one end in the longitudinal direction of the block from above, and the other end has a lower surface which is placed on the overhanging step portion. A structure provided with a notch is also suitable.

Further, in the method of constructing a boundary block of the present invention, the boundary block directly mounted on the legs at both ends is lifted so that the intermediate portion of the boundary block is floated on the foundation construction surface to form a gap. After adjusting the position, the molds are placed in the longitudinal direction and positioned, then the formwork is installed, concrete is placed in the formwork, and the intermediate gaps formed by the legs of the boundary block are discarded. The feature is that the concrete layer, the mortar layer and the rolled-up concrete layer on the concrete layer are placed all at once.

[0008]

1 and 2 show an example of one leg of a boundary block of the present invention. In this example, the leg portion 2 is provided at one end of the boundary block 1, and the step portion 3 is integrally formed with the main body block by projecting from the end face in the longitudinal direction of the boundary block. The other end is mounted on the stepped portion 3 of the boundary block installed along the water thread 5 by the pre-work, so that a gap portion 4 is provided between the other end and the installation surface. At the time of installation, the height of the legs 2 is adjusted. The height adjusting means may be height adjusting concrete or gravel, but it is convenient to use the wedges 6.

The monopod structure to be placed on this step may be formed by forming a notch 7 at one end of the boundary block as shown in FIG. Moreover, not only the stepped portion 3 but also the mortar and the mortar hole or the convex portion and the concave portion may be provided at each end portion so that the blocks are locked.

The construction method of these boundary blocks 1 is shown in FIG.
2 will be described with reference to FIG. 2, after the water thread 5 is stretched, the boundary block 1 is placed on the foundation construction surface 10 on which foundation materials such as stones are spread.
The boundary block 1 placed directly on the legs so as to float the middle part of the to form a gap is arranged in order in the longitudinal direction while adjusting the height of the legs 2 with a wedge 6, etc., and then positioned. A frame 11 is installed, concrete 12 is placed in the formwork, and an intermediate gap 4 is formed by the legs of the boundary block.
Including the discarded concrete layer 13 and the mortar layer 19 on it
And the part of the rolled-up concrete layer 14 is placed at once.

4 to 6 show an example of a bipod of the boundary block of the present invention. In this example, leg 2 is bounding block 1
It is provided at both ends of. In this example as well, the clearance 4 is formed by floating the intermediate part, and in these examples also, in these examples, the height of the legs 2 is adjusted by the wedges 6 and the like, and the legs 2 are sequentially arranged in the longitudinal direction as in the above embodiment. Rolled up concrete layer
It is possible to set 14 mags at once. As shown in FIG. 6, the leg 2 is provided with a concrete communication hole 8 to enhance the fixing strength.

The intermediate portion of the boundary block is floated to make the gap 4
In order to form the above, a leg block 9 separate from the block may be used as shown in FIG. Since the leg block 9 is provided in place of the various embodiments described above, it is preferable that the leg block 9 has a size that extends between the two boundary blocks and is rectangular. The type installed below the individual boundary blocks can also achieve the object of the present invention. Further, the notch 7 may be provided at the bottom of the boundary block 1 for the purpose of installation stability.

8 and 9, instead of the conventional concrete leg portion, an insert 15 having a female screw structure is vertically embedded in the projecting step portion 3 provided at one end in the longitudinal direction of the block as the leg portion, A height adjusting bolt 16 is screwed into it so that it can be adjusted from above. Since the conventional height adjusting bolts were screwed in from below, the workability was poor because adjustments could only be done from the side. Overhang step 3 on the lower surface of the other end
The lower surface notch portion 7 to be mounted on is provided. An iron plate 17 or a concrete block may be placed on the lower end of the height adjusting bolt 16 in order to avoid burial due to screwing. In this example, the housing hole that houses the bolt head of the protruding height adjustment bolt 16
Although 18 is provided in the lower surface notch 7, a recessed hole for accommodating the bolt head may be provided in the projecting step 3. Also, instead of the insert, a nut-shaped one can fulfill the same function.

[0014]

The boundary block of the present invention and the method of constructing the same are as described above in detail, and it is possible to pour the waste concrete as the basic concrete, the height-adjusting mortar layer on the upper surface thereof and the rolled concrete at the same time. Also, no height adjustment mortar is required. The height adjustment bolts and the safety streak serve as stab stirrup, and the pedestrian road boundary block and cast-in-place concrete can be integrated to form a stronger structure. Further, it is possible to contribute to the leveling of the construction and the shortening of the construction period regardless of the weather. A height adjusting bolt is provided, so that the height can be adjusted by screwing the bolt from above, so workability is good.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a boundary block monopod of the present invention.

FIG. 2 is a front view of the same boundary block during concrete construction.

FIG. 3 is a side view of the seam portion of another monopod's boundary block of the present invention.

FIG. 4 is a perspective view of an example of a bipod of the boundary block of the present invention.

FIG. 5 is a perspective view of a main part of the boundary block during construction.

FIG. 6 is a perspective view of a leg portion of another boundary block of the present invention.

FIG. 7 is a side view of a joint portion of the boundary block of the present invention in which leg blocks are installed.

FIG. 8 is a perspective view of the boundary block of the present invention using a height adjustment bolt.

FIG. 9 is a side view of a joint portion of the boundary block.

[Explanation of symbols]

 1 Boundary block 2 Leg 3 Step 4 Gap 5 Water thread 6 Wedge 7 Notch 8 Communication hole 9 Leg block 10 Foundation construction surface 11 Formwork 12 Concrete 13 Discarded concrete layer 14 Rolled concrete layer 16 Height adjustment bolt

Claims (5)

[Claims] 1. A boundary block in which a leg portion is provided at one or both ends of a longitudinal direction end portion of the boundary block, and an intermediate portion is floated to provide a gap portion with an installation surface. 2. The boundary block according to claim 1, wherein the leg portion is provided at one end of the boundary block, and the step portion is integrally formed with the main body block by projecting from the end face in the longitudinal direction. 3. The boundary block according to claim 1, wherein the legs are integrally provided with the main body block at both ends of the boundary block. 4. The leg portion has a height adjusting bolt adjustably screwed into an overhanging step portion provided at one longitudinal end of the block from above, and the other end is mounted on the overhanging step portion. The boundary block according to claim 1, further comprising a lower surface cutout portion. 5. The boundary blocks directly placed by the leg parts at both ends are arranged in the longitudinal direction while adjusting the height of the leg parts so that the intermediate part of the boundary block is floated on the foundation construction surface to form a gap. After positioning by positioning, the formwork is installed, concrete is placed in the formwork, and the discarded concrete layer and the mortar layer and the rolled-up concrete layer portion thereon are placed all at once. Boundary block construction method.