JP2009221741A - Paving block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein paving blocks have a fault of causing level difference at abutting parts due to being simply laid on the sands which results in not only interfering with walking and traveling of wheelchairs but also impairing appearance. <P>SOLUTION: The block of rectangular parallelepiped shape laid on a pavement is formed with slant face parts of isosceles trapezoidal shape in longitudinal section with upward widening isosceles trapezoidal shape on both side faces of one set and downward widening isosceles trapezoidal shape on both side faces of the other set in two sets of mutually opposed side faces of a block body. Alternatively, a set of mutually opposed side faces of the block body are provided with slant face parts of isosceles trapezoidal shape in longitudinal section with upward widening isosceles trapezoidal shape and downward widening isosceles trapezoidal shape side by side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an improvement of a plurality of blocks arranged on a pavement.

  The paving block generally has a thickness of 50 to 120 mm and is laid on a sand cushion (leveled sand) and paved. In general, there are a rectangular parallelepiped flat plate and an interlocking block in which a horizontal uneven surface that restricts horizontal movement is formed.

  This paving block is better in design and construction than asphalt pavement and stone-clad construction, and is widely used for sidewalks and parking lots. This can be a sand cushion that adjusts the foundation with sand, and after placing the block on the sand cushion and arranging it, it is only necessary to roll and finish the surface of the block flatly, so the construction period is short and skill is not required. .

In general, a paving block is manufactured, for example, by a method using vibration machining immediate demolding. In other words, zero slump concrete (cement, aggregate, water, and various admixtures and admixtures as required) is supplied into a mold with a predetermined shape, and vibration pressure (frequency 4500-9000rpm, vibration acceleration) After 10 to 20 g, vibration pressing time 3 to 10 sec), the mold is immediately removed from the mold and cured (indoor curing, steam curing, or spray curing) to complete.

  Since such a paving block is simply laid on the sand cushion as described above and then laid by rolling, there is a drawback that a step is generated between the blocks over time. It is considered that the cause of the step is mainly the block structure. That is, since all of the surrounding wall surfaces are vertical surfaces, a significant step is generated at the boundary between the place where the load is frequently applied and the place where it is not. Of course, even in the boundary part where the load is evenly applied, there is no effect of restricting the vertical movement between adjacent blocks, and it is unavoidable due to the difference in the supporting force of the roadbed and the difference in the drainage state, etc. Inevitably, a step will occur.

If there is a step in the laid block, it may cause troubles such as vibration in the wheelchair, and the pedestrian may get caught in the legs or the appearance may be greatly impaired.

  In view of the above problems, the present inventor has achieved the present invention as a result of intensive research. The feature of the present invention is a rectangular parallelepiped block laid on a pavement, and the block main bodies are opposed to each other. On the side of the pair, an isosceles trapezoidal shape that spreads upward on both sides of one pair and an isosceles trapezoidal shape that spreads downward on both sides of the other pair, forming a sloped part with an isosceles trapezoidal cross section It is to have done.

  Alternatively, it is a rectangular parallelepiped block laid on a pavement, and the vertical cross-sectional shape of the block body is an isosceles base with an upwardly extending isosceles trapezoidal shape and a downwardly spreading isosceles trapezoidal shape The shape is that the slope part of the shape is installed in the horizontal direction.

  Here, the “slope portion” in the present specification is formed on the side surface of the rectangular parallelepiped block main body, and refers to a concavo-convex portion that engages and regulates vertical movement during laying. That is, two types of slope portions that are spread upward and slope portions that are spread downward are formed, and two types of slope portions of adjacent blocks are engaged with each other at the time of laying, thereby restricting vertical movement. As the block main body, an interlocking block in which a horizontal concavo-convex portion for restricting a horizontal movement is formed on a side surface in addition to a flat block.

  In the present invention, the greatest feature is that a pair of slope portions each having an isosceles trapezoidal shape with an upwardly extending vertical cross section and an isosceles trapezoidal shape having a downwardly extending shape are formed on two opposite side surfaces of the block body. To do. In the first aspect of the present invention, two sets of opposing side surfaces of the block main body have an isosceles trapezoidal slope with one longitudinal section extending upward, and the other pair having a longitudinal sectional shape extending downward. An isosceles trapezoidal slope is formed. According to claim 2, on the pair of opposing side surfaces of the block main body, a slope portion having an isosceles trapezoidal shape with an upward spread and an isosceles trapezoidal shape with an upward spread is provided in the horizontal direction. Shape. In this case, the opposing side surfaces of the other set may be vertical surfaces, or may be engaged with each other with the vertical cross-sectional shape being a parallelogram. A parallelogram may be provided.

  One or a plurality of slope portions are formed on the side surface of the block main body or partially. A horizontal uneven part may be provided on the side surface to restrict movement in the horizontal direction, and the horizontal uneven part may be provided on either the slope part or the part where the slope part is not formed. When the slope portion is partially formed, other portions may be vertical surfaces, and slope portions having different sizes and inclination angles may be formed.

  As the shape of the slope portion, in addition to a linear tapered surface, for example, a curved surface, or a shape obtained by combining a tapered surface or a curved surface and a vertical surface may be used. In short, on the opposite side surfaces of the block body, an isosceles trapezoidal shape with an upwardly extending vertical section and an isosceles trapezoidal shape with a downwardly extending shape are formed, and these are arranged at positions where they engage with each other when laying. Any structure can be used. The inclination angle of the slope (side surface) is not particularly limited, but is about 3 ° to 12 °.

Although the block manufacturing method is not particularly limited, it may be a vibration pressure immediate demolding method as described above, or it may be a casting method in which concrete is filled in a mold with vibration and cured and cured and then demolded. Good. The composition of the block is not particularly limited. A formulation having a water permeability of 1 × 10 ⁻² cm / s or more may be used, or a formulation having a water permeability of less than 1 × 10 ⁻² cm / s may be used.

  The paving block according to the present invention is a rectangular parallelepiped block laid out on a pavement, and has an isosceles trapezoidal shape in which the longitudinal cross-sectional shape extends upward and an isosceles trapezoidal shape in the downward direction on opposite sides of the block body. By forming a slope of seeds and laying them in combination, the opposing side surfaces are supported in the same direction up and down, the load on one block is dispersed and it is difficult to sink, and it also rises It has an excellent effect that it can be prevented and hardly causes unevenness on the laying surface.

Also, if the side surface of the block body is only in the vertical direction at the time of laying by installing a slope part with an isosceles trapezoidal shape that spreads upward and downward and an isosceles trapezoidal shape that spreads downward on one side, or forming a horizontal uneven part In addition, since the movement in the horizontal direction is also restricted, the connection between the blocks is ensured, and even if partial collapse occurs, the influence on the periphery can be reduced.

Each block has a structure in which slopes with an isosceles trapezoidal shape with an upwardly extending vertical cross section and an isosceles trapezoidal shape with a downward spreading are formed on opposite sides of the block body, and these are laid in combination. The above problem has been solved by restricting the vertical movement of.

  1 (a), (b) and (c) show an embodiment of a paving block 1 according to the present invention, wherein one set of two opposing side surfaces of a block body is vertically upward in the shape of one set. Is a sloped portion 21 having an isosceles trapezoidal shape with a convex portion and a lower portion being a concave portion (A-A longitudinal sectional view of FIG. 5B). The other set is a sloped portion 22 having an isosceles trapezoidal shape having a longitudinal cross-sectional shape with a concave portion on the upper side and a convex portion on the lower side (BB cross-sectional view in FIG. 10C). A two-dot chain line shown in FIG. 2A represents a rectangular parallelepiped, and is displayed as a reference for making the unevenness due to the solid line and the dotted line easy to understand. The paving block 1 of this example is a permeable concrete block having a main body upper surface of 300 mm × 300 mm and a thickness of 60 mm, and each side surface is formed by a tapered surface inclined by 5 mm with respect to a vertical surface from the upper surface. is doing. Further, three arc-shaped joint forming portions 3 are provided on each side surface, and a joint 4 with a base is formed on the upper surface.

As shown in FIG. 2, the joining state when the paving block 1 is laid is a state in which the upwardly extending isosceles trapezoids and the downwardly extending isosceles trapezoids are alternately arranged, and the slope portion 21 and the slope portion 22 are engaged with each other. It becomes. Accordingly, one pavement block 1 is supported by the adjacent pavement block 1 as shown in FIG. 3A from the upper side and from the lower side to the opposite side surface. It is laid with restrictions on movement. As a result, when a load is applied to one paving block 1 (hatched block) as shown in FIG. 2B, the load is dispersed and absorbed according to the arrows in the figure, and the influence of partial damage is reduced. Block pavement where steps are unlikely to occur is possible.

As the slope part 21 of the isosceles trapezoidal shape that spreads upward and the slope part 22 of the isosceles trapezoidal shape that spreads downward, it is formed in the entire side surface, and is also formed in the center part of the side surface as a vertical surface as shown in FIG. May be. In this example, the joint formation part 3 is provided in the corner part of the vertical surface. By combining the vertical surface with the inclined surface portion 21 and the inclined surface portion 22 in the vertical direction, an engaging action is generated between the vertical surface and the downwardly extending inclined surface portion 22 entering below when laying, and the vertical support is further increased. can do. Further, joint sand 5 is generally filled in the gap formed by the joint forming part 3 for the purpose of enhancing the frictional force and cushioning properties, but the slope part 21 and the slope part 22 are provided in the central part of the vertical surface. By forming, the effect which prevents the outflow and movement of the joint sand 5 arises.

By combining the vertical surface, the slope portion 21, and the slope portion 22 in the horizontal direction as in the second embodiment, movement in the horizontal direction is also restricted. The means for restricting the movement in the horizontal direction can be achieved by providing the horizontal concavo-convex part 6 on the slope part 21 and the slope part 22 as shown in FIG. Although the horizontal uneven | corrugated | grooved part 6 of this example is provided over the whole area of a height direction, you may provide partially. However, it is preferable that the horizontal concavo-convex portion 6 is provided in a state that does not affect the vertical engagement.

As the shapes of the slope portion 21 and the slope portion 22 formed on the side surfaces, the shapes shown in FIG. 6 are conceivable. FIG. 5A shows a shape in which the vertical surfaces on the upper surface side and the lower surface side of the side surface are displaced in the horizontal direction and connected by a curved surface. FIG. 5B shows a curved surface formed by combining curved convex portions and concave portions. FIG. 4C shows a shape in which the vertical surfaces on the upper surface side and the lower surface side that are displaced in the horizontal direction are connected by a linear taper surface. FIG. 4D shows a curved surface formed from the vertical surface on the lower surface side to the upper surface side. About the figure (a) and (d), it is good also as an up-down uneven | corrugated | grooved part turned upside down. In short, the slope portions provided on the opposite side surfaces of the block main body only have to have a vertical cross-sectional shape arranged in an isosceles trapezoidal shape, and may be formed by a bent surface or a curved surface parallel to the ridgeline.

FIG. 7 (a) shows another embodiment of the paving block 1 according to the present invention, in which a pair of opposing side faces of the block main body has an upwardly extending isosceles trapezoidal shape and an downwardly extending isosceles leg. A trapezoidal slope portion 21 and a slope portion 22 are provided. The paving block 1 of this example has a main body upper surface of a rectangle of 300 mm × 200 mm, a thickness of 60 mm, and a 5 mm taper surface. The slope portion 21 and the slope portion 22 may be provided at positions where two opposing side surfaces face each other, or may be provided partially as shown in FIG.

In the paving block 1 in which the vertical cross-sectional shape of one set of side surfaces is provided with an upwardly extending isosceles trapezoid and a downwardly extending isosceles trapezoid, the opposite side surfaces of the other set are as shown in FIG. By arranging the slope portion 21 and the slope portion 22 in a parallelogram shape in the longitudinal section, it is possible to more reliably support the vertical direction. Moreover, it is also possible to provide the slope part 21 and the slope part 22 arranged in parallelogram as shown in FIG. In addition, as shown in FIG. 9, by providing two sets of the slope portion 21 and the slope portion 22 on two opposite sides, another set can be provided without providing upper and lower uneven portions on the opposite sides of the other set. It is possible to support the opposite side surfaces. The slope portion 21 and the slope portion 22 can naturally be implemented in various shapes as shown in FIG. 6 in addition to those shown in this example.

The paving block according to the present invention may be an interlocking block 7 as shown in FIG. The interlocking block 7 in FIG. 2A has an isosceles trapezoidal slope 21 having a vertically extending cross section of one set on two opposing side surfaces, and a vertically extending cross section of the other set. The slope portion 22 is an isosceles trapezoid. The interlocking block 7 in FIG. 6B has a structure in which an isosceles trapezoidal slope portion 21 that broadens upward and an isosceles trapezoidal slope portion 22 that spreads downward are provided on opposite sides of the long side. The shapes of the slope portion 21 and the slope portion 22 and other side surfaces may be structures as shown in FIG. 7B, FIG. 8A, FIG. 8B, or FIG. Moreover, it is good also as various slope shapes shown in FIG.

(A) is a perspective view which shows one Example of the block for paving which concerns on this invention, (b) is AA longitudinal cross-sectional view of (a), (c) is BB longitudinal cross-sectional view of (a). is there. Example 1 It is a side view which shows the laying state of the paving block shown in FIG. (A) is a perspective view which shows the laying state of the paving block shown in FIG. 1, (b) is a top view which shows the state in which the load concerning one paving block acts on the surrounding paving block. (A) is a perspective view which shows the other Example of the paving block concerning this invention, (b) is the partial side view and top view of the laying state of (a). (Example 2) It is a perspective view which shows the other Example of the paving block which concerns on this invention. (Example 3) (A) thru | or (d) is a fragmentary sectional view which shows the further another Example of the block for paving which concerns on this invention, respectively. (Example 4) (A) And (b) is a top view which shows the further another Example of the block for paving which concerns on this invention, respectively. (Example 5) (A) And (b) is a top view which shows the further another Example of the block for paving which concerns on this invention, respectively. (Example 6) It is a top view which shows the further another Example of the block for paving which concerns on this invention. The further another Example of the paving block which concerns on this invention is shown, (a) (b) is a top view of an interlocking block. (Example 7)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Block for pavement 21 Upper slope part 22 Lower slope part 3 Joint formation part 4 Joint with base 5 Joint sand 6 Horizontal uneven part 7 Interlocking block for pavement

Claims (5)

A rectangular parallelepiped block laid on a pavement, with two pairs of opposing side faces of the block body, an isosceles trapezoidal shape spreading upward on both sides of one set, and spreading downward on both sides of the other set A paving block characterized in that an isosceles trapezoidal slope section having an isosceles trapezoidal shape is formed. It is a rectangular parallelepiped block laid on the pavement, and the vertical cross-sectional shape is an isosceles trapezoidal shape with an upwardly extending isosceles trapezoidal shape and a downwardly extending isosceles trapezoidal shape on a pair of opposing side surfaces of the block body A paving block characterized by a slope. The opposite side surfaces of the other set are formed with an upwardly extending slope part on the side of the upwardly extending isosceles trapezoidal slope, and an upwardly extending slope part on the side of the downwardly extending isosceles trapezoidal shape. 2. The paving block according to 2. The paving block according to claim 1, 2, or 3, wherein the slope portion is provided below the vertical surface. 5. The pavement block according to claim 1, wherein the side surface is formed with a horizontal concavo-convex portion for restricting movement in the horizontal direction by adjoining block main bodies when laid.

Images