JPH11323853A - Concrete block to be installed on road and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete block to be installed on a road which can be produced easily and installed simply on a road surface. SOLUTION: A depression inward is made from the bottom surface 24 of a rectangular parallelepiped concrete block, an insert 30 and an insert retainer 33 are embedded in the depression 40 in such a manner that an opening 34 of the insert retainer can be exposed. Thus, even though the concrete is shrunk during the production, a car stop for a parked car can be provided from which the opening 34 will not be projected out from the bottom surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for road installation which is mounted by using an insert, and
The present invention relates to the manufacturing method.

[0002]

2. Description of the Related Art For the purpose of ensuring the safety of pedestrians and drivers, concrete blocks having a substantially rectangular parallelepiped shape are arranged side by side on road shoulders or at the boundary between sidewalks and roadways. In addition, many parking lots have concrete blocks for parking. These blocks are desirably those that can be easily fixed on a road surface as one of the blocks for a vehicle stop and are hard to peel off.

[0003] As shown in Fig. 9, there is a concrete block having a substantially trapezoidal cross section and having a long side, which is provided with an inclined surface 22 which hits a tire. In the block 10 for a vehicle stop, the horizontally extending bottom surface 24 is attached to the asphalt or concrete road surface 3 of the parking space 1 so that the anchor hole 14 penetrating from the bottom surface 24 to the upper surface 26 is formed. The anchor pin 4 is driven into the road surface 3 through the anchor hole 14 to fix the block 10 for stopping the vehicle.

[0004] In this block 10 for stopping the vehicle, a powerful operation such as driving the anchor pin 4 into the road surface 3 is required. If the amount of driving the anchor pin 4 is small, the block 10 for stopping the vehicle is easily peeled off. Furthermore, it is necessary to prepare a large amount of mortar 72 in order to close the anchor hole 14 penetrating the block 10 for a vehicle stop, which takes a lot of time and labor for construction.

[0005]

For this reason, there has been proposed a car stop block in which a hollow insert formed with a female screw is embedded in advance in the bottom surface of the car stop block so that an anchor can be connected thereto. Such a block for a vehicle is easily mounted simply by attaching an anchor bolt to the insert and making a hole for the anchor bolt to enter into an asphalt or concrete road surface, abandoned concrete, or the like.

[0006] These car stop blocks are manufactured using a formwork, and at that time, an installation plate having an insert attached thereto is passed through an opening on the upper side of the formwork serving as a bottom surface of the block.
The insert is buried accurately at a predetermined position on the bottom surface.

In such a manufacturing method, shrinkage occurs due to the amount of water contained in the concrete from the state where the concrete is poured into the mold, and the bottom surface may fall. The water content of the concrete is adjusted in advance so as to suppress such shrinkage as much as possible. However, there are cases where fluctuations in the bottom surface cannot be avoided due to unmanageable factors such as fluctuations in the surface water of the sand that is the aggregate.

[0008] When mounting the block for car stop on the road surface,
If the bottom of the block shrinks and the insert protrudes to some extent, a gap is created between the block and the road surface, which makes the finish look unsatisfactory. Therefore, there is a problem that the block is easily peeled off. Therefore, it is not possible to construct the block in a stable state, and it is necessary to repair the gap with mortar or the like, which requires time and effort on site.

On the other hand, when the block is manufactured, it is also possible to set the burying position of the insert so that the shrinkage of the bottom surface does not occur or the shrinkage amount is predicted.
However, as described above, the amount of shrinkage fluctuates due to factors that cannot be managed, and further if the amount of shrinkage is suppressed,
Expenses such as process control and dimensional control increase, resulting in higher costs.

[0010] Such a phenomenon is common not only to a block for a vehicle but also to a concrete block installed on a road such as a boundary block.

In view of the above, the present invention provides a concrete block which is easy to manufacture and can be supplied at a low cost, and which can be stably installed without an insert protruding from a bottom surface. It is intended to provide a manufacturing method thereof.

[0012]

For this reason, in the present invention, the openings of the insert or the insert holder for holding the inserts are not buried in alignment with the bottom surface of the block, but these openings are always recessed from the bottom surface. The position is such that these openings do not project from the bottom surface even if the bottom surface of the block may shrink during manufacture. That is, the concrete block for road installation according to the present invention has a substantially horizontal bottom surface grounded to the road surface, and at least one insert to which an anchor can be connected is embedded in the road surface so that the opening faces the opening. In the concrete block, the opening of the insert or the opening of the insert holder for holding the insert is located at a position recessed from the bottom surface.

With such a concrete block for road installation according to the present invention, even when the amount of shrinkage during manufacture varies, the installation of the insert or the insert holder does not protrude from the bottom surface. Concrete blocks can be provided. Therefore, the concrete block for road installation of the present invention, when mounted on the road surface,
Since there is no gap between the bottom surface and the road surface, an anchor bolt can be attached to the insert, and the block can be easily and stably installed on the road surface. Further, even in the case of manufacturing, even if the height of the bottom surface is slightly changed due to shrinkage due to moisture, it is possible to provide a concrete block of a quality having no problem in construction. Therefore, stricter work than necessary for process control or material control is unnecessary, and a high-quality concrete block for road installation at low cost can be provided.

Such a concrete block for road installation according to the present invention defines an outer peripheral surface of a substantially rectangular parallelepiped concrete block, and an installation in which an insert is attached to an opening of a formwork having an upper opening. When passing the board and burying the insert on the bottom of the concrete block, the mounting area where the opening of the installation board insert or the insert holder for holding this insert is installed is higher than the surrounding area, and the level difference, It should be bigger than the maximum value at which the concrete shrinks and the bottom goes down. According to this manufacturing method, a portion corresponding to the mounting area of the installation plate is formed as a recess on the bottom surface. When the insert or insert holder appears in the recess, these openings are necessarily recessed from the bottom surface.

In the manufacturing method of the present invention, since the mounting area is in the concrete, it is important to prevent the slug from leaking into the insert. For this purpose, the area of the mounting area is at least wider than the outline of the opening,
It is desirable to ensure a sufficient contact area between the opening and the mounting area. By such a manufacturing method, a recess wider than the outer periphery of the opening of the insert and the insert holder is formed on the bottom surface of the concrete block for road installation, and the concrete for road installation in which the opening of the insert and the insert holder appears. A manufacturing block is provided.

Such a concrete block for road installation according to the present invention has no protruding portion on the bottom surface, the bottom surface is closely contacted with the road surface, and is firmly attached by an anchor bolt via an insert. Therefore, since it has high strength against peeling and can sufficiently cope with an impact when a tire or the like comes into contact with the side surface, it is particularly suitable as a car stop block having a portion corresponding to a vehicle tire.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a car stopping block 20, which is one of the concrete blocks for road installation according to the present invention, is mounted. The car stop block 20 of the present embodiment has a substantially rectangular parallelepiped overall shape and a substantially horizontal bottom surface 24, and two hollow inserts 30 with female threads are embedded in the bottom surface 24 so that the openings 32 face. ing. The block 20 for the vehicle stop is used for the road surface 3 of the parking lot 1.
When mounting on an insert 30, the insert 30
And an anchor bolt 35 longer than the inner length of the insert 30
And screw the bolt 35 so that the head 36 protrudes from the bottom surface 24. Then, two anchor holes 38 are drilled at a location corresponding to the opening 32 of the insert 30 with a drill or the like on the asphalt road surface 3 of the parking space 1 where the car stop block 20 is in contact with the ground,
The vehicle stop block 20 is mounted so that the bolt head 36 is accommodated in the anchor hole 38. If necessary, mortar 72 may be injected into anchor hole 38. In this way, the block 20 for vehicle stop according to the present embodiment is easily constructed on the road.

FIG. 2 is an enlarged view of a portion of the bottom surface 24 of the block 20 in which the insert 30 is embedded.
FIG. 3 is a cross-sectional view of the vehicle stop block 20 of the present invention. With reference to these, a more detailed description will be given. The block 20 for a vehicle stop is a horizontally long, substantially rectangular parallelepiped block made of concrete, and has a surface 22 inclined with respect to a bottom surface 24, and the inclined surface 22 hits a tire of the vehicle. Furthermore, the insert 30 is buried so that the opening 32 of the bottom surface 24 faces, and an anchor bolt 35 can be installed on the insert 30. In these inserts 30, the side (tip) of the opening 32 is fitted into an insert holder 33 having a function of holding the insert 30 when embedded. The opening 34 of the insert holder 33 is also open toward the bottom surface 24 so that the anchor bolt 35 can be attached to the insert 30 through the opening 34.

In the vehicle stop block 20 of the present embodiment,
A substantially rectangular recess 40 is formed inside (above) the bottom surface 24.
Are provided, and the insert holder 3 is
3 so that the opening 34 of the insert holder 33 is exposed.
The insert 30 supported by the insert holder 33 is embedded. For this reason, the insert holder 3
The third opening 34 is, of course, recessed from the bottom surface 24 including the opening 32 of the insert 30. That is,
The opening 34 of the insert holder 33 is open facing the upper surface 42 of the recess 40 at a position recessed from the bottom surface 24,
The insert 30 and the insert holder 33 are provided on the bottom surface 24.
So that they do not protrude.

The upper surface 42 of the recess 40 is formed so as to be wider than the outer periphery of the opening 34 of the insert holder 33, that is, the outer periphery of the insert holder 33, and the opening 3 is formed substantially at the center thereof.
4 are located. This recess 40 is, as described later,
Even if shrinkage occurs when the block 20 is manufactured, the recess 40 is set to a depth that always remains, and even if manufacturing conditions fluctuate due to various factors, the insert
Alternatively, the insert holder 33 does not project.

FIG. 4 shows a state in which the vehicle stop block 20 of this embodiment is mounted on the road surface 3. As described above, the block 20 for a vehicle stop according to the present embodiment mounts the anchor bolt 35 on the insert 30 buried in the bottom surface 24 and inserts the head 36 of the anchor bolt into the anchor hole 38 opened on the road surface 3. Can be Anchor hole 38
When the thickness is small, sufficient strength can be obtained simply by inserting the bolt head 36, but it is also possible to inject mortar 72 into the anchor hole 38 if necessary.

Further, a recess 40 is formed in the bottom surface 24 of the present embodiment, and an insert holder 33 is embedded so that the opening 34 is located on the upper surface 42 thereof. For this reason, the bottom 2
Since the insert holder 33 or the insert 30 does not protrude from the block 4, the block 20 is fixed to the anchor bolt 35 while the bottom surface 24 is in contact with the road surface 3 with almost no gap.
Can be fixed using Therefore, at the site, there is no need to repair the gap between the road surface 3 and the block 20 with mortar or the like, so that it is possible to save time and effort for the repair. In addition, the car stopping block 20 can be easily finished and has a good appearance. Furthermore, since there is no portion protruding from the bottom surface 24, the block 20 of the present example is mounted with almost the entire bottom surface in contact with the road surface 3. Because of this, there is no floating part or rattling,
Bock block 2 that can be firmly fixed to the road surface 3 and is resistant to forces such as impact from tires and does not peel off
0 can be provided.

FIG. 5 shows a block 2 for a vehicle stop according to the present invention.
0 shows the form unit 59 used in the manufacture of the No. 0 when viewed from above. The formwork unit 59 of this example is capable of manufacturing four wheel stopper blocks 20 at the same time, and the formwork sections 50 for forming the individual blocks 20 are arranged in parallel (in the vertical direction in FIG. 5). I have. Individual formwork 5
0 is a shape that defines the upper surface and side surfaces of a substantially rectangular parallelepiped block that is long in the horizontal direction.
An opening 50a is provided above the formwork portion 50 corresponding to.
Two plate-like setting plates 54 for setting the insert 30 from above are passed in parallel so as to cross the openings 50a of the formwork portions 50 arranged in parallel in the vertical direction in the drawing. . Both ends 54c of these installation plates 54 are fixed by stoppers 51 provided at predetermined positions of the formwork unit 59 in order to increase the accuracy of the embedding position of the insert 30.

FIGS. 6 to 8 show a process of precasting (prefabricating) the vehicle stopping block 20 at a factory using the above-described sectional views of the formwork unit 59. FIG. As shown in FIG. 6, the installation plate 54 is configured such that the insert 30 can be set by the insert holder 33 on the back surface 54 b facing the mold 50. A substantially rectangular auxiliary plate 52 having a slightly larger area than the outer periphery of the insert holder 33 is attached to a location where each insert 30 is to be mounted. Further, a boss 56 of a size that can be set by fitting the opening 34 of the insert holder 33 into the upper surface 52a of the auxiliary plate 52 is provided. This boss 56
Can be attached, for example, by bolts 57a and nuts 57b that penetrate the auxiliary plate 52 and the installation plate 54.

The auxiliary plate 52 of this embodiment has a height (thickness) h.
However, the insert 70 is set so as to be larger than the maximum value at which the concrete 70 shrinks and the bottom 24 is lowered, so that the insert holder 33 does not protrude from the bottom 24 even when the concrete 70 shrinks during the production of the block 20. Therefore, the surface (lower surface) 52a of the auxiliary plate 52 corresponds to the mounting region of the present invention, and a sufficient level difference is ensured by making this region 52a higher (lower downward) than the lower surface 54b of the surrounding installation plate 52. It is.

Further, the width (area) of the upper surface 52a of the auxiliary plate 52 is slightly wider than the outer periphery (peripheral portion) of the opening 34 of the insert holder 33, and the area where the opening 34 contacts the upper surface 52a. Can be sufficiently secured. As described above, the upper surface 52a of the auxiliary plate 52 may be used even when the concrete shrinks during manufacturing.
However, the size of the auxiliary plate 52 can secure a mounting area 52a having a sufficient area so that the opening 34 of the insert holder 33 and the entire outer peripheral portion thereof come into contact with each other. Therefore, it is possible to prevent the leak from leaking into the insert 30 from the gap between the opening 34 and the upper surface (mounting area) 52 a of the auxiliary plate 52.

As shown in FIG. 7, the insert 30 is set in such a manner that the insert 30 is suspended from the opening 50a above the form 50 by using such an installation plate 54, and the form 5
Concrete 70 is poured from the opening 50a of the “0”. Thereby, the concrete car stop block 20 in which the insert 30 is buried in a state of being opened toward the bottom surface can be manufactured. Then, even if the poured concrete 70 shrinks and the bottom surface 24 is lowered, the upper surface 52a of the auxiliary plate 52, that is, the mounting area does not appear above the concrete 70.

As shown in FIG. 8, when the installation plate 54 is pulled upward, even if the bottom surface 24 is slightly lowered (the amount of shrinkage S), a portion corresponding to the auxiliary plate 52 appears as a recess 40 in the bottom surface 24. The block 20 in which the insert 30 and the insert holder 33 are always recessed (retracted) from the bottom surface 24 can be obtained. The block 20 shown in FIG. 3 is obtained by removing the block 20 from the mold section 50 and inverting the block.

According to the method of manufacturing a block for a vehicle stop according to the present invention, it is possible to provide a concrete block for road installation with a stable quality which does not affect the performance of mounting on the road even if the shrinkage amount S fluctuates somewhat. Therefore, the bottom 2
It is not necessary to use much labor for process control or dimensional control more than necessary in order to suppress the amount of shrinkage of 4, and it is possible to manufacture and provide a low-cost, short-period wheel-stop block with stable performance. In addition, it is possible to provide a car stopping block that is easy to be attached to a road surface without a convex shape on the bottom surface 24, has a beautiful finish, and is hard to peel off.

In this embodiment, the car stop block 20 is described as a concrete block installed on the road surface 3; however, the present invention is not limited to this, and a boundary block installed on a road shoulder or the like. Among others, the present invention can be applied to a concrete block installed on a road (road surface) in the same manner as described above.

Further, the number of inserts embedded in the bottom surface of the block may be one or three or more. In addition, the insert may be buried directly without using the insert holder.

Further, in the above-described bobbin block 20, the recess 40 of the bottom surface 24 is substantially rectangular, but the shape of the recess is not limited to this, and the shape of the recess may be a disk shape, a tapered shape, or
Of course, it may be a polygon such as a triangle or a pentagon.

When manufacturing the block of the present invention,
The auxiliary plate is manufactured using the same or smaller size as the outer periphery of the opening of the insert or the insert holder, and the recess 40 is formed in the opening 3 of the insert holder 33.
In contrast to block 4, the block may be formed to have substantially the same size or small size, but the area where the insert or the insert holder comes into contact with the mounting area may be insufficient, and concrete may leak into the insert. There is a possibility that the posture of the embedded insert may become unstable. For this reason, in the present embodiment, the recess 40 formed in the block is formed by using the installation plate having the mounting area larger than the outer shape of the insert or the insert holder as described above.
It is desirable to have a wider concrete block.

[0034]

As described above, the concrete blocks for road installation according to the present invention, when they are manufactured, have a mounting area where the opening of the insert holder of the installation plate on which the insert holder is mounted is in contact. By making it higher than the periphery, the opening of the insert or the insert holder can always be formed at a position depressed from the bottom surface. Furthermore, even when the bottom surface is shrunk when the block is manufactured, it is possible to provide a concrete block for road installation in which these openings do not protrude from the bottom surface. Therefore, the concrete block for road installation of the present invention has no protruding portion from the bottom surface, and since there is no gap when it is mounted on the road surface, it is easy to attach an anchor to the insert, and in a strong and stable state. Can be installed.

Further, since it is not necessary to control the amount of shrinkage of the concrete more strictly than necessary at the time of manufacturing the block, it is possible to supply a concrete block for road installation of low cost and of sufficient quality.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a state in which a vehicle stop block according to an embodiment of the present invention is assembled on a road surface.

FIG. 2 is an enlarged view of a part of the vehicle stop block shown in FIG.

FIG. 3 is a cross-sectional view showing a structure of a vehicle stop block shown in FIG.

FIG. 4 is a cross-sectional view showing a state in which the vehicle stop block shown in FIG. 1 is mounted on a road surface.

FIG. 5 is a view schematically showing a form unit as viewed from above in the manufacture of the vehicle stop block according to the embodiment of the present invention.

FIG. 6 is a diagram showing a manner of manufacturing the vehicle stop block according to the embodiment of the present invention, and is a diagram schematically showing a manner in which an installation plate on which an insert is attached is transferred to a mold section.

FIG. 7 is a view showing a state in which concrete has been poured from between the formwork portion and the installation plate shown in FIG. 5;

FIG. 8 is a view schematically showing a state in which the mold is removed from the mold unit shown in FIG. 5;

FIG. 9 is a cross-sectional view showing the structure of a conventional car stop block.

[Explanation of symbols]

 1. Parking 3. Road surface 4. Anchor pins 10, 20. Blocks for car stops 22. Tilt surfaces that hit tires 24. Bottom surface attached to road surface 26. Top surface 30. Insert 32. Insert Opening 33 of the insert holder 34 Opening of the insert holder 35 Anchor bolt 36 Head of the anchor bolt 38 Anchor hole 40 Depression 42 Upper surface of the depression 50 Formwork 50a ··· Opening of mold 51 ··· Stopper 52 ··· Auxiliary plate 52a ··· Top surface of the auxiliary plate (mounting area) 54 ··· Installation plate 54b ··· Bottom surface of the installation plate 54c ··· Ends 56 of the installation plate 56 ·· Boss 57a Bolt 57b Nut 59 Formwork unit 70 Concrete 72 Mortar

Claims (5)

[Claims] 1. A concrete block for road installation having a substantially horizontal bottom surface grounded to a road surface and having at least one insert connectable to an anchor buried so that an opening faces the bottom surface. A concrete block for installation on a road, characterized in that the opening of the insert or the opening of the insert holder for holding the insert is at a position recessed from the bottom surface. 2. The device according to claim 1, wherein a recess wider than an outer periphery of an opening of the insert or the insert holder is formed in the bottom surface, and the opening of the insert or the insert holder appears in the recess. A concrete block for on-street installation. 3. The concrete block for road installation according to claim 1, wherein the concrete block for road installation is a block for car stop having a portion corresponding to a tire of a car. 4. An outer peripheral surface of a substantially rectangular parallelepiped concrete block is defined. An installation plate with an insert is passed through the opening of the formwork having an upper opening, and the insert is inserted into the bottom surface of the concrete block. A method of manufacturing a concrete block for road installation for burying the mounting plate, wherein a mounting area in contact with an opening of the insert of the installation plate or an insert holder for holding the insert is higher than a surrounding area. To manufacture concrete blocks for road installation. 5. The method for manufacturing a concrete block for road installation according to claim 4, wherein the mounting area is wider than the outer periphery of the opening of the insert or the insert holder.