JP4370472B2 - Concrete block for wall surface formation - Google Patents

Description

  The present invention relates to a precast-type concrete block for constructing a wall surface mainly on a roadside or a median.

  Conventionally, even when a wall surface is formed on a road side having a curve or on a median strip, the wall surface is formed using a block used for a straight road. This inventor has proposed the block shown in FIG. 17 as a block which forms a retaining wall (refer patent document 1). However, a concrete block for a wall surface used in a straight line is a block having a rectangular outer diameter in which a side wall surface is provided perpendicular to the wall surface. Accordingly, when such a rectangular block is installed on a curved road, a gap is generated between the blocks as shown in FIG. The wall constructed with this block had to be filled with mortar or concrete to fill the gap and form the wall. Therefore, the work efficiency is poor and the installation takes time, and the cost is high.

Therefore, as shown in FIG. 19, in order to be able to cut the side wall of the wall according to the curvature of the curve, a block of a type in which the wall surface of the front and back surfaces protrudes sideways with respect to the side surface and the center of the side wall is recessed. There is also (Patent Document 2). In this way, the side wall can be easily cut as shown in FIG. 20, and the curve can be adapted to the curve. However, even in this block, it is necessary to cut a part of the side wall at the site, so that the work efficiency is low and the installation takes time and the cost is high as described above.
Design Registration No. 1199063 JP 2000-319910 A

  Therefore, the present invention has been made in view of the above problems, and can be installed regardless of a straight section or a curved section, and without a need for on-site cast concrete, a reliable and solid wall surface. It is in providing the concrete block for wall-surface formation which can be laid.

  In order to solve the above problems, the present invention employs a configuration in which adjacent wall-forming concrete blocks can be installed at a free angle. The wall-forming concrete block 100 of the present invention has a wall surface portion 10 that forms a wall surface. And the both-sides edge part or one side edge part of this wall surface part 10 is provided in circular arc shape, and also the protrusion part which protruded and formed in the wall surface side part in the upper part or lower part of this side edge part ( 20a or 20b). The wall-forming concrete block 100 (see FIGS. 14 and 16) provided with a protrusion only on one side end is installed at the end of the wall-forming concrete block 100 that is connected in a plurality. The one provided with the protrusions 20 on both side ends (see FIGS. 1 and 11) is installed at the other portion, that is, at the center other than the ends. The protruding part 20 of the wall-forming concrete block provided with protruding parts 20 at both ends is provided such that when the protruding part 20a at one side end part is provided upward, the protruding part 20b at the other side end part is provided below. The protrusions 20a and 20b at the end portions on both sides are provided separately from each other. The wall-forming concrete block 20 that protrudes only on one side only on one side includes both a type in which an upper part protrudes and a type in which a lower part protrudes. The width, height, and thickness of the wall surface portion 10 are not particularly limited.

  The wall-forming concrete block 100 formed in this way can be connected by engaging the side end side protruding upward and the side end side protruding downward. Since each of the wall surface forming concrete blocks 100 to be connected has a side end portion provided in an arc shape, two adjacent wall surface forming concrete blocks 100 can be connected and arranged at an arbitrary angle. Therefore, according to the concrete block 100 for forming a wall surface of the present invention as shown in FIG. 4, the wall surface is constructed regardless of the straight portion or the curved portion of the road and the curvature of the curve of the curved portion. Can do.

  It is desirable that the protrusion length α of the upper protrusion 20a and the lower protrusion 20b of each wall-forming concrete block 100 be the same. By making the projecting lengths of the projecting portions (20a, 20b) on both sides the same length, the arc of the projecting portion comes into contact with the arc of the other wall surface forming concrete block 100 and is installed without a gap as shown in FIG. Because it can.

  Further, a fitting convex portion 22b formed in a circular convex shape is provided on the upper surface 21b of the lower protruding portion 20b, and a fitting concave portion 22a formed in a circular concave shape is provided on the lower surface 21a of the other upper protruding portion 20a. be able to. If this structure is adopted, when the wall-forming concrete block 100 is arranged adjacently, the fitting convex portion 22b can be fitted into the fitting concave portion 22a of the adjacent wall-forming concrete block 100. Can be prevented from coming off. Further, by making the fitting convex portion 22b and the fitting concave portion 22a circular, the adjacent wall-forming concrete block 100 can be fitted and arranged at any angle, and even after being fitted. The angle of the connecting portion can be changed by rotating the joint portion as a fulcrum. That is, even after the installation, the mutual angle can be easily adjusted. In addition, a fitting convex part may be provided in the upper surface of an upper side protrusion part, and a fitting recessed part may be provided in the upper surface of a lower side protrusion part, ie, an unevenness | corrugation reversely.

  Further, the fitting convex portion 22b and the fitting concave portion 22a can be provided with a bolt hole 30 for passing a bolt or a reinforcing bar at the center thereof. After fitting the fitting convex part 22b and the fitting concave part 22a, by passing a bolt or a reinforcing bar through the connected blocks, each adjacent wall-forming concrete block 100 is securely fixed. Can do. The bolt hole 30 is preferably provided at the center of the fitting convex portion 22b and the fitting concave portion 22a. This is because the angle of the adjacent wall-forming concrete block 100 can be adjusted only by loosening the bolt somewhat if the bolt hole 30 is at the center of rotation even from a state where the bolt or the reinforcing bar is passed.

  Further, the wall surface portion 10 can be provided with a visual recognition hole 50 so that the opposite side can be visually recognized. The wall-forming concrete block 100 of the present invention can be installed on the side of a road or in a median strip, etc., but if the concrete wall surface is continuous, the driver of the vehicle feels a very tight feeling. There is. Therefore, by providing the visual recognition hole 50 in the wall surface portion 10, the surrounding scenery can be visually recognized from the visual recognition hole 50 when installed on the side of the road, and the opposite lane when installed in the median strip. By making it possible to visually recognize the traffic, it is possible to relieve the feeling of pressure on the driver. The shape and size of the visual recognition hole 50 provided in the wall surface portion 10 are not limited, and may be simply a round hole or a square hole, or may be provided in a pattern.

  Furthermore, an extended bottom plate portion 40 extending horizontally can be provided below the wall surface portion 10. The extended bottom plate portion 40 is a portion that is buried in the road when the wall forming concrete block 100 is installed. That is, the wall-forming concrete block 100 is provided to stably fix the wall-forming concrete block 100 by the weight of the earth and sand by providing an area (extended plate portion) on which the earth and sand are placed on the wall-forming concrete block 100 main body. It is a thing. The size and shape of the extended bottom surface portion 40 are not limited, and are appropriately determined according to the place of use. For example, when installing on a sharp curve, it may be provided on the inner side of the side end part so as not to contact the extending part of the adjacent wall surface forming block, or may be provided so that the front side end part becomes thinner. . According to the wall forming concrete block 100 provided with such an extended bottom plate portion 40, it is mounted on the extended bottom plate portion 40 even in a place where there is no road on the back side such as a cliff edge as shown in FIG. Since sufficient stability is obtained by the placed earth and sand, the wall-forming concrete block 100 can be prevented from falling to the cliff side, and a wall surface can be formed (see FIG. 5).

  Further, if the extended bottom plate portion 40 is provided, even if the automobile collides with the concrete wall due to a traffic accident or the like, for example, the automobile itself will be placed on the extended bottom plate portion 40 at the time of the collision. The falling and sliding of the wall forming concrete block 100 can be prevented by its own weight. The extended bottom plate portion 40 may be provided only on one side or on both sides (see FIGS. 1 and 11). For example, when installing on the side of a road, only a collision of a car from the road surface side can be considered, so that an extended bottom plate portion 40 is provided only on the road surface side, like a median strip When there is a possibility that the automobile may collide from both sides, it is preferable to use one provided with an extended bottom plate portion 40 below both sides.

  According to the wall forming concrete block according to the present invention, the roadside portion can be formed without any gaps by simply engaging the upper and lower protrusions, regardless of the straight portion of the road, the curved portion, and the curvature of the curved portion. Or a wall surface can be constructed now in the median strip.

  In addition, the installation method is simply to engage the upper protrusion and the lower protrusion, and there is no need to join it with ready-mixed concrete or mortar, so that the construction period can be greatly shortened compared to the conventional method. Become.

  Further, by providing a fitting convex part and a fitting concave part on the lower surface of the upper projecting part and the upper surface of the lower projecting part, or vice versa, the upper projecting part and the lower projecting part are fitted to each other so as to be horizontal with each other. It is possible to reliably prevent displacement in the direction. Moreover, the angle between the adjacent wall-forming concrete blocks can be freely changed.

  Furthermore, if a bolt hole for passing a bolt or a reinforcing bar is formed in the center of the fitting recess and the fitting projection, and each block is fixed to the bolt hole with a bolt or the like, the vertical displacement in addition to the horizontal direction is achieved. Can also be prevented. Even in this state, if the bolts are slightly loosened, the angles of the adjacent wall-forming concrete blocks can be freely changed.

  Furthermore, by providing a hole for visual recognition in the wall surface, the visibility on the back side of the wall surface is improved, and the feeling of pressure on the driver can be eased. Further, by devising the shape of the hole, a pattern can be provided on the wall surface.

  Further, by providing the extended bottom plate portion extending in the horizontal direction below the wall surface portion, the earth and sand are placed on the extended bottom plate portion, so that the wall forming concrete block can be stably installed. It becomes like this. In addition, even if the automobile collides with the wall surface portion, the wall surface forming concrete block can be prevented from falling or sliding.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode of a concrete block 100 for forming a wall according to the present invention will be described in detail according to an embodiment shown in the drawings.

  The perspective view of the concrete block 100 for wall surface formation which concerns on Example 1 is shown by FIG. 1, FIG. The wall-forming concrete block 100 according to the first embodiment includes a flat wall surface portion 10 so that a plurality of wall blocks can be arranged adjacent to each other.

  Both side end portions of the wall surface portion 10 are formed in an arc shape, and one side end portion of the both side end portions is provided with a lower protruding portion 20b formed so that the lower portion protrudes as compared with the upper portion. Both the side end portions of the lower protruding portion 20b and the non-projecting upper end portion are formed in a semicircular arc shape. The other side end portion is provided with an upper protruding portion 20a formed so that the upper portion protrudes in comparison with the lower portion, and similarly, the side end portions of both the upper protruding portion 20a and the non-projecting lower side end portion are provided. It is formed in an arc shape. As for the protruding length, the upper protruding portion 20a and the lower protruding portion 20b are provided with the same protruding length, and the adjacent wall surface forming block 100 is described below with a fitting convex portion and a fitting concave portion. After engagement, the length is adjusted so that no gap is formed between the wall surfaces regardless of the installation angle.

  A fitting protrusion 22b that protrudes in a circular shape is provided on the upper surface 21b of the lower protrusion 20b, and a fitting recess 22a that is recessed in a circle is provided on the lower surface 21a of the upper protrusion 20a. When this fitting convex part 22b and the fitting concave part 22a of the concrete block for wall surface formation arrange | positioned adjacently fit, the adjacent concrete blocks 100 for wall surface formation are connected. Adjacent wall-forming concrete blocks 100 connected in this way can be rotated around the fitting convex portion 22b and the fitting concave portion 22a.

  Further, a bolt hole 30 through which a bolt can pass is provided at the center of both the fitting convex portion 22b and the fitting concave portion 22a, and a female screw is provided in the bolt hole 30 (see FIG. 3, female screw). Is omitted). The bolt hole 30 provided in the upper protruding portion side 20a is provided through, and the bolt hole 30 provided in the lower protruding portion 20b is formed halfway. Accordingly, the bolts can be punched from the upper surface of the upper protruding portion 20a when they are overlapped.

  Further, an extended bottom surface portion 40 extending in the horizontal direction is provided below the wall surface portion 10. The extended bottom surface portion 40 is formed on the inner side of the projecting portions 20a and 20b so that the extended portions do not come into contact with each other even when the extended portion bottom plate portion side 40 is installed inside the curve. By providing the extended plate portion 40, earth and sand are placed on the extended bottom plate portion 40 when installed in the road, and the wall-forming concrete block 100 can be stabilized by the weight of the earth and sand. If the concrete block 100 for forming a wall surface according to the first embodiment is used, the extended bottom plate portion 40 can be used even in a place where one side of the block cannot be supported like a cliff as shown in FIG. Since the block is fixed by the earth and sand placed on, a stable wall surface can be constructed.

  As shown in FIG. 4, the wall surface forming block 100 produced as described above is connected and installed so that the fitting convex portion 22a and the fitting concave portion 22a are fitted and overlapped with each other. At this time, when installing on a curved portion of the road, the adjacent wall-forming concrete blocks 100, 100 are installed at an angle according to the curvature of the road. The fitting projection 30a and the fitting recess 21a can be prevented from being separated from each other in the horizontal direction by the overlapping connection, and the both blocks can be completely fixed by screwing bolts into the bolt holes. can do. Even in this state, as long as the bolt is loosened, the blocks can rotate with respect to the bolt hole, so that the angle between the arbitrarily connected blocks can be corrected. Thereafter, the wall surface is formed on the side of the road by leveling so as to fill the extended bottom surface portion 40.

  The front view of the concrete block 100 for wall surface formation which concerns on Example 2 is shown by FIG. The wall-forming concrete block 100 according to the second embodiment is provided with a viewing hole 50 that can be visually recognized on the opposite side of the wall surface portion 10. This viewing hole is formed in a rectangular shape with rounded corners. Other configurations are the same as those of the first embodiment. Various shapes can be considered for the shape of the visual recognition hole 50. Another embodiment having the visually recognizing holes 50 of other shapes is shown in FIGS. Of course, the shape of the hole for visual recognition is not particularly limited, and can be appropriately selected.

  The perspective view of the concrete block 100 for wall surface formation which concerns on Example 3 is shown by FIG. In the concrete block 100, the bottom plate extending portions 40 are provided on both sides of the lower front and back surfaces of the wall surface portion 10. Since the other points are the same as in the first embodiment, the description thereof is omitted.

  The wall-forming concrete block 100 provided with the bottom plate extending portions 40 on both sides as described above can place earth and sand on both sides as shown in FIG. Installation can be performed. In addition, when the wall-forming concrete block 100 having the bottom surface extending portions 40 on both sides is installed in the central separation zone of the road, the vehicle itself is placed on the extended bottom plate portion 40 even in the case of a collision by the vehicle from either side. The block can be prevented from falling and sliding, which is effective.

  FIG. 14 shows a perspective view of the concrete block 110 for forming a wall surface according to the fourth embodiment. The concrete block 110 for wall surface formation in Example 4 is of a type that is installed at the end of a block that is connected and arranged to form a wall surface. The wall-forming concrete block 100 of Example 4 is formed in an arc shape only at one side end portion, and is provided with a lower protruding portion 20b in which the lower side of the side end portion formed in this arc shape protrudes. . In the center of the arc of the lower protruding portion 20b, a fitting that is formed in a circular convex shape centered on the bolt hole on the upper surface of the lower protruding portion 20b in order to securely connect with the adjacent adjacent concrete block The point which the convex part 22b is formed and the bolt hole 30 for letting a volt | bolt pass is provided is the same as that of Example 1. Therefore, the wall surface forming concrete block 110 is connected and fitted with the wall surface forming concrete block in which the upper protruding portion 20a is formed to form the end of the wall surface portion (FIG. 15).

  FIG. 16 is a perspective view of the wall forming concrete block 120 according to the fifth embodiment. This is the concrete block used at the end of the block that is continuously installed, and is installed at the end opposite to the third embodiment. The wall-forming concrete block 120 has one longitudinal end portion formed in an arc shape and, unlike the fourth embodiment, has an upper projecting portion 20a that projects upward. A fitting concave portion is formed in a circular concave shape with the bolt hole 30 as a center, and a bolt hole 30 for passing a bolt is formed through the center of the upper protruding portion 20a. It is the same. The wall surface forming concrete block 100 is connected and fitted to the wall surface forming concrete block in which the lower protruding portion 20b is formed to form the end of the wall surface portion.

It is a perspective view showing the concrete block for wall surface formation concerning Example 1. FIG. It is a perspective view showing the back side of the concrete block for wall surface formation concerning Example 1. FIG. It is sectional drawing of the concrete block for wall surface formation which concerns on Example 1. FIG. It is a perspective view which shows the state which installed the concrete block for wall-surface formation concerning Example 1 in the cliff face. It is sectional drawing which shows the state which installed the concrete block for wall surface formation which concerns on Example 1. FIG. It is a front view of the concrete block for wall surface formation concerning Example 2. FIG. It is a front view which shows another Example of the concrete block for wall surface formation which concerns on Example 2. FIG. It is a front view which shows another Example of the concrete block for wall surface formation which concerns on Example 2. FIG. It is a front view which shows another Example of the concrete block for wall surface formation which concerns on Example 2. FIG. It is a front view which shows another Example of the concrete block for wall surface formation which concerns on Example 2. FIG. It is a perspective view showing the concrete block for wall surface formation concerning Example 3. FIG. It is a perspective view showing the back side of the concrete block for wall surface formation concerning Example 3. FIG. It is sectional drawing which shows the state which installed the concrete block for wall surface formation which concerns on Example 3. FIG. It is a perspective view showing the concrete block for wall surface formation which concerns on Example 4. FIG. It is sectional drawing which shows the state which installed the concrete block for wall surface formation which concerns on Example 4. FIG. It is a perspective view showing the concrete block for wall surface formation which concerns on Example 5. FIG. It is a perspective view showing the conventional concrete block for wall surface formation. It is a schematic diagram which shows the connection part of the conventional concrete blocks for wall surface formation. It is a perspective view which shows another example of the block for conventional wall surface formation. It is a schematic diagram which shows the coupling | bond part of the wall-forming blocks of another conventional example.

Explanation of symbols

100 Wall-forming concrete block 10 Wall surface portion 20a Upper protrusion portion 20b Lower protrusion portion 21b Upper surface of lower protrusion portion 21a Lower surface of upper protrusion portion 22a Fitting recess 22b Fitting protrusion 40 Extended bottom portion 50 Viewing hole

Claims (7)

In concrete blocks to form wall surfaces protruding from the ground on the side of the road or in the median strip,
A wall surface formed by arcuate ends of the wall surface, an upper protrusion formed on one end of the wall surface and projecting upward from the side, and the other side opposite to the upper protrusion A lower projecting portion projecting sideways from the lower part formed at the end,
A fitting convex portion formed in a circular convex shape on the upper surface of the lower protruding portion so as to be rotatable with the fitting portion as a fulcrum when fitted to adjacent concrete blocks, and a lower surface of the upper protruding portion And a fitting recess formed in a circular concave shape,
Furthermore, the concrete block for wall surface formation characterized by the bolt hole for letting a volt | bolt pass in the center of a fitting recessed part and a fitting convex part. In concrete blocks to form wall surfaces protruding from the ground on the side of the road or in the median strip,
A wall surface formed by arcuate ends of the wall surface, an upper protrusion formed on one end of the wall surface and projecting upward from the side, and the other side opposite to the upper protrusion A lower projecting portion projecting sideways from the lower part formed at the end,
A fitting recess formed in a circular concave shape on the upper surface of the lower protruding portion and a circular shape on the lower surface of the upper protruding portion so as to be rotatable with the fitting portion as a fulcrum when fitted to adjacent concrete blocks. With a convex fitting formed in a convex shape,
Furthermore, the concrete block for wall surface formation characterized by the bolt hole for letting a volt | bolt pass in the center of a fitting convex part and a fitting recessed part.   The concrete block for wall surface formation according to claim 1 or 2, wherein the upper protruding portion and the lower protruding portion have the same protruding length. In concrete blocks to form wall surfaces protruding from the ground on the side of the road or in the median strip,
A wall surface portion in which one side end portion of the wall surface is formed in an arc shape, and an upper protruding portion or a lower protruding portion in which a part of the upper side or the lower side of the one side end portion is formed to protrude sideways; With
A fitting convex part formed in a circular convex shape on the upper surface of the lower protruding part or the lower surface of the upper protruding part so as to be rotatable with the fitting part as a fulcrum when fitted to adjacent concrete blocks. Is provided ,
Wall forming concrete blocks bolt holes characterized by comprising formed for passing a bolt at the center of the fitting convex portion. In concrete blocks to form wall surfaces protruding from the ground on the side of the road or in the median strip,
A wall surface portion in which one side end portion of the wall surface is formed in an arc shape, and an upper protruding portion or a lower protruding portion in which a part of the upper side or the lower side of the one side end portion is formed to protrude sideways; With
A fitting recess formed in a circular concave shape is provided on the upper surface of the lower protruding portion or the lower surface of the upper protruding portion so as to be rotatable about the fitting portion when fitted to adjacent concrete blocks. It is,
Fitting wall forming concrete blocks, wherein a bolt hole for passing a bolt at the center of the engagement recess is formed.   The wall surface forming concrete block according to any one of claims 1 to 5, wherein the wall surface portion has a viewing hole for visually recognizing the opposite side.   The concrete block for wall surface formation according to any one of claims 1 to 6, wherein an extended bottom plate portion extending in the horizontal direction is provided below the wall surface portion.

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