Concrete block structure

Abstract

To provide a concrete block structure capable of efficiently installing a foundation concrete block.SOLUTION: A concrete block structure 10 installed on a foundation portion includes a foundation concrete block 11 having a placement surface portion 21 placed on an installation place and having a through-hole 26 penetrating in a height direction from the placement surface portion 21, and a height adjuster 12 inserted into the through-hole 26, having a lower end 34 exposable below the placement surface portion 21 when a force is applied to an upper portion 35 of the height adjuster 12, and capable of adjusting an exposed length of the lower end 34. With such a configuration, since the position of the placement surface portion 21 of the foundation concrete block varies depending on the exposed length of the lower end 34, the height of the foundation concrete block 11 can be easily adjusted, and efficient installation is possible.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to concrete block structures, and more particularly to concrete block structures used to form foundations. [Background technology]

[0002] FIG. 10 is a schematic process diagram of the conventional method for installing foundation concrete blocks disclosed in Patent Document 1.

[0003] Referring to FIG. 10(1), when placing precast foundation concrete blocks 62, first, crushed foundation stones 61 are laid, and then the foundation concrete blocks 62 are placed on the crushed foundation stones 61.

[0004] When installing the foundation concrete block 62, first the foundation concrete block 62 is lifted via a wire using a crane or the like (not shown) and temporarily placed on the foundation crushed stone 61. Next, the position of the foundation concrete block 62 itself is fine-tuned using a crowbar and camber (not shown) so that the position of the top end of the foundation concrete block 62 is flush with the position of the top end of the foundation concrete block adjacent to it in the front-rear direction (the direction penetrating the paper in Figure 10). After that, ready-mixed concrete is poured inside the foundation concrete block 62, and the installation of the foundation concrete block 62 is completed.

[0005] 10(2) and (3), a slope concrete block 64 is lifted in the direction of the slope via a wire 65 using a crane or the like (not shown) and temporarily placed on leveling concrete 69 poured on the slope 63. Height adjusters 71a and 71b are attached to the bottom surface of the slope concrete block 64, and a level adjuster 72 is attached to the side facing the foundation, so that the height, inclination, etc. of the slope concrete block 64 can be finely adjusted. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-101551 Summary of the Invention [Problem to be solved by the invention]

[0007] However, fine adjustment of the placement of the foundation concrete blocks 62 is done manually using a crowbar, which is hard work and places a burden on the workers.

[0008] The present invention has been made to solve the above-mentioned problems, and has an object to provide a concrete block structure that enables efficient installation of foundation concrete blocks. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the invention described in claim 1 is a concrete block structure to be installed on a foundation, which has a mounting surface to be placed at the installation location and a foundation concrete block having a through hole that penetrates vertically from the mounting surface, and a height adjustment device that is inserted into the through hole and whose lower end can be exposed below the mounting surface when force is applied to the upper part, and which can adjust the length of the exposed lower end.

[0010] With this configuration, the position of the placing surface of the foundation concrete block varies depending on the length of the exposed lower end.

[0011] The invention described in claim 2 is the same as the invention described in claim 1, in that the height adjuster has a spiral groove formed therein, and when the upper part is screwed in, the lower end moves up and down.

[0012] With this configuration, the position of the exposed lower end fluctuates up and down.

[0013] The invention described in claim 3 is the configuration of the invention described in claim 1 or claim 2, in which the foundation concrete block is installed on the foundation part of the embankment slope, and on the side facing the embankment slope, an inclined surface portion is formed that slopes from top to bottom toward the embankment slope.

[0014] With this configuration, the inclined surface portion faces the slope direction.

[0015] The invention of claim 4 is the configuration of the invention of claim 1 or claim 2, wherein the height adjuster is longer than the through-hole, and the upper and lower ends are exposed from the through-hole.

[0016] With this configuration, the upper and lower ends of the height adjuster can be seen from the outside.

[0017] The invention described in claim 5 is the same as the invention described in claim 1 or claim 2, in which the height adjuster has a spherical lower end.

[0018] With this configuration, the lower end of the height adjuster can be slid horizontally.

[0019] The invention described in claim 6 is the configuration of the invention described in claim 1 or claim 2, in which the foundation concrete block is installed at the base part of the embankment slope and has an insert embedded therein to which a slope direction adjustment device can be attached, which can adjust the position of the slope structure installed in the slope direction on the surface facing the embankment slope.

[0020] This configuration makes it easier to position the slope direction adjuster. [Effects of the Invention]

[0021] As explained above, the invention described in claim 1 allows the position of the placing surface of the foundation concrete block to vary depending on the exposed length of the lower end, making it possible to easily adjust the height of the foundation concrete block and enabling efficient installation.

[0022] In addition to the effect of the invention described in claim 1, the invention described in claim 2 allows the position of the exposed lower end to be adjusted up and down, making it possible to more accurately adjust the position of the lower end and thereby enabling efficient installation of foundation concrete blocks.

[0023] In addition to the effects of the invention of claim 1 or claim 2, the invention of claim 3 improves the stability of installing concrete blocks in the slope direction because the inclined surface portion faces the slope direction.

[0024] In addition to the effects of the invention described in claim 1 or claim 2, the invention described in claim 4 makes it easier to adjust the height of the foundation concrete block because the upper and lower ends of the height adjustment device can be seen from the outside.

[0025] The invention described in claim 5 has the effect of the invention described in claim 1 or claim 2, and in addition, the lower end of the height adjustment device can be slid horizontally, making it easy to adjust the position of the foundation concrete block.

[0026] The invention of claim 6, in addition to the effects of the invention of claim 1 or claim 2, makes it easier to position the slope direction adjustment tool, making it easier to adjust the position of the slope structure and improving construction efficiency. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a perspective view of a concrete block structure according to an embodiment of the present invention; [Figure 2] FIG. 2 is a front view of the concrete block structure shown in FIG. 1. [Figure 3] FIG. 2 is a plan view of the concrete block structure shown in FIG. 1. [Figure 4] FIG. 2 is a left side view of the concrete block structure shown in FIG. 1. [Figure 5] FIG. 5 is an enlarged cross-sectional view of part A shown in FIG. 4, showing a schematic configuration of the height adjuster. [Figure 6]2A to 2C are diagrams illustrating a method for adjusting the height of the concrete block structure shown in FIG. 1. [Figure 7] 2 is a schematic process diagram of the installation method of the concrete block structure shown in FIG. 1. [Figure 8] FIG. 8 is a plan view of the concrete block structure shown in FIG. 7 and an adjacent concrete block structure. [Figure 9] 1. FIG. 4 is a diagram showing another example of a foundation concrete block used in the concrete block structure shown in FIG. [Figure 10] 1 is a part of a schematic process diagram of a conventional concrete block installation method disclosed in Patent Document 1. DETAILED DESCRIPTION OF THE INVENTION

[0028] FIG. 1 is a perspective view of a concrete block structure according to an embodiment of the present invention, FIG. 2 is a front view of the concrete block structure shown in FIG. 1, FIG. 3 is a plan view of the concrete block structure shown in FIG. 1, and FIG. 4 is a left side view of the concrete block structure shown in FIG. 1.

[0029] Referring to Figures 1 to 4, concrete block structure 10 is mainly composed of a foundation concrete block 11 made of precast concrete and four height adjustment devices 12 (12a to 12d) screwed into foundation concrete block 11.

[0030] The foundation concrete block 11 is placed on a foundation. In this embodiment, it forms a foundation for piling up slope concrete blocks 64 on the embankment slope. It includes a rectangular bar-shaped mounting surface 21 (21a, 21b) placed at the installation location, a front surface 22 connected to one side of the mounting surfaces 21a, 21b and extending vertically upward, a back surface 23 connected to one side of the mounting surfaces 21a, 21b opposite the front surface 22 and extending vertically upward, an inclined surface 24 sloping upward from the upper end of the front surface 22 toward the back surface 23, and connecting portions 25 (25a, 25b) connecting the front surface 22 and the back surface 23. Furthermore, the upper ends of the back surface 23, the inclined surface 24, and the connecting portions 25a, 25b of the foundation concrete block 11 are horizontal and flush with each other. In the installed state, the inclined surface portion 24 is arranged so that it slopes downward from top to bottom on the side facing the embankment slope. With this configuration, the inclined surface portion 24 faces the slope direction, improving the stability of the installation of the slope concrete block 64 in the slope direction.

[0031] The foundation concrete block 11 has through holes 26 (26a-26d) that penetrate vertically from the placing surface portion 21, and inserts 14 (14a-14d) into which height adjusters 12 are screwed are embedded inside each of these holes. Each of the connecting portions 25a, 25b of the foundation concrete block 11 has two connecting through holes 27 that penetrate horizontally. Two inserts 28 (28a, 28b) that are screwed with hook members (described later) are embedded in the upper end of the back surface portion 23, and one insert 28c that is screwed with a hook member (described later) is embedded in the upper end of the inclined surface portion 24. Eight inserts 29 (29a-29h) that are screwed with slope direction adjusters (described later) are embedded in the surface of the inclined surface portion 24.

[0032] The foundation concrete block 11 has connecting portions 30 (30a to 30d) at its four corners that protrude horizontally (vertical direction in FIG. 8) and in a direction that extends the front portion 22 and the back portion 23 in a plan view. The effects of this configuration will be described later.

[0033] Next, the height adjuster 12 will be described.

[0034] FIG. 5 is an enlarged cross-sectional view of part A shown in FIG. 4, and is a schematic diagram of the height adjustment device, and FIG. 6 is a diagram explaining the height adjustment method for the concrete block structure shown in FIG.

[0035] 5 and 6, the height adjuster 12 has a head 31 and a body 32 connected to the underside of the head 31 and having a spiral groove 33 formed therein. The lower end 34 of the body 32 has a spherical shape. The length L1 of the height adjuster 12 is longer than the length L2 of the through-hole 26 of the foundation concrete block 11, and when the height adjuster 12 is inserted into the through-hole 26, as shown in FIG. 6, an upper portion 35 and a lower end 34 are exposed from the through-hole 26. The effects of this configuration will be described later.

[0036] In use, the height adjuster 12 is inserted into the through-hole 26 of the foundation concrete block 11. At this time, when force is applied to the upper part 35 of the height adjuster 12 and it is rotated in one direction, for example with an adjustable wrench, spanner, electric impact wrench, etc., a portion of the spiral groove 33 is screwed into the insert 14. As a result, the lower end 34 moves downward and becomes exposed below the mounting surface 21. Furthermore, when the upper part of the height adjuster 12 is rotated in the opposite direction, the lower end 34 moves upward. By rotating the height adjuster 12 and screwing it into the insert 14 in this way, the lower end 34 moves up and down, making it possible to adjust the exposed length L3 of the lower end 34 in the direction of arrow 36 shown in FIG. 6.

[0037] Next, a method for installing a concrete block structure will be described.

[0038] FIG. 7 is a schematic process diagram of the installation method of the concrete block structure shown in FIG. 1, and FIG. 8 is a plan view of the concrete block structure shown in FIG.

[0039] Referring to FIG. 7(1), first, crushed stone foundation 61 is laid and leveling concrete 69 is poured. Next, a metal plate (not shown) is placed on the leveling concrete 69 in advance at a position corresponding to the height adjustment device 12. After that, a wire 65 is passed through hook members 67 (67a to 67c) that are screwed onto inserts 28a to 28c of the foundation concrete block 11a, respectively, and the foundation concrete block 11a is lifted by a crane (not shown) connected to the wire 65 and temporarily placed on the leveling concrete 69. At this time, the height adjustment device 12 is longer than the through-hole 26, and the upper portion 35 and lower end 34 of the height adjustment device 12 are exposed from the through-hole 26 below the mounting surface 21. Therefore, the lower end 34 of the height adjustment device 12 is placed so that it abuts on the metal plate that was previously placed at a position corresponding to the height adjustment device 12.

[0040] Next, the position of the foundation concrete block 11a itself is finely adjusted so that the foundation concrete block 11a is placed in abutment and aligned with the adjacent foundation concrete block 11b in the front-rear direction (the direction through the paper in Figure 7).

[0041] FIG. 8 is a plan view of the concrete block structure shown in FIG. 7 and adjacent concrete block structures.

[0042] Referring to Figure 8, first, the foundation concrete block 11a is moved horizontally so that one side of the foundation concrete block 11a abuts against the side of the foundation concrete block 11b adjacent to it in the horizontal direction (the up-down direction in Figure 8). As described above, the height adjuster 12 has a spherical lower end 34, which allows the lower end 34 of the height adjuster 12 to slide horizontally. That is, because the tip of the spherical shape abuts against the metal plate and the surface is smoothly formed, the height adjuster 12 can be moved horizontally with less force than if the lower end were angular. Therefore, the position of the foundation concrete block 11 can be easily adjusted.

[0043] Next, the position of the foundation concrete block 11a itself is further fine-tuned so that the upper end position of the foundation concrete block 11a is flush with the upper end position of the adjacent foundation concrete block 11b (so that they are at the same height and form a continuous plane). Referring to Figures 7(2) and 8, the height adjusters 12a-12d of the foundation concrete block 11a are adjusted using an electric impact wrench or similar. At this time, since the height adjuster 12 is inserted into the through-hole 26, the electric impact wrench or similar can be applied from above the height adjuster 12. This eliminates the need to work in the narrow space between the leveling concrete 69 and the placement surface 21, making it easier to operate the height adjuster 12. In this embodiment, the height adjuster 12 is longer than the through-hole 26, and the upper end 35 and lower end 34 are exposed from the through-hole 26. This configuration allows the upper end 35 and lower end 34 of the height adjuster 12 to be visible from the outside. Therefore, the height adjustment operation for the upper end 35 can be performed while checking the exposed length of the lower end 34. Therefore, the height of the foundation concrete block 11 can be adjusted more easily than when the length of the height adjuster 12 is the same as or shorter than the through-hole 26. As described above, the foundation concrete block 11 has connecting portions 30 (30a-30d) at its four corners that protrude horizontally (the vertical direction in FIG. 8 ) and in a direction that extends the front portion 22 and the back portion 23 in a plan view. In other words, the connecting portions 30 protrude in a direction toward the adjacent foundation concrete block 11. Regarding the height of the connecting portions 30, the connecting portions 30a and 30d are formed to the upper end of the back portion 23, and the connecting portions 30b and 30c are formed to the height of the point where the inclined surface portion 24 joins the front portion 22. This configuration forms gaps between the connecting portions 30a and 30b and between the connecting portions 30c and 30d. In other words, since the foundation concrete block 11 has a gap above the height adjustment device 12, it is easier to reach the height adjustment device 12 with an electric impact wrench or the like when adjusting the height after installation, making it easier to construct the foundation concrete block 11.Furthermore, when connecting the foundation concrete blocks 11a and 11b in a curved line, it becomes easier to change the angle of the foundation concrete block 11a relative to the adjacent foundation concrete block 11b, facilitating curved construction.

[0044] When a rotational force is applied to the upper part 35 of the height adjuster 12, the height adjuster 12 screws into the insert 14. The lower end 34 then moves downward, making it possible to adjust the length exposed from the mounting surface 21. With this configuration, the position of the mounting surface 21 of the foundation concrete block 11 changes depending on the exposed length of the lower end 34. Therefore, there is no need to manually lift the foundation concrete block 11 using a crowbar or the like to change the position of the mounting surface 21 during temporary placement, as was previously the case, and the height of the foundation concrete block 11 can be easily adjusted. This allows for efficient installation of the foundation concrete block 11.

[0045] Furthermore, the height adjuster 12 is formed with a spiral groove 33, and is configured so that the lower end 34 moves up and down when the upper part 35 is screwed in, thereby fluctuating the position of the exposed lower end 34 up and down. The height can be adjusted by repeatedly moving the lower end 34 up and down until it is flush with the upper end of the adjacent foundation concrete block 11b. This allows the position of the lower end 34 to be adjusted more accurately, enabling efficient installation of the foundation concrete block 11.

[0046] Next, a connecting rod with threads on both ends is inserted into the connecting through-holes 27a and 27b of the foundation concrete block 11a, and one end of the connecting rod is passed through the connecting through-holes 27c and 27d of the adjacent foundation concrete block 11b, and both ends are secured to the foundation concrete blocks 11a and 11b with nuts. This configuration allows the foundation concrete blocks to be more firmly connected when concrete is poured. Formwork is then installed in the opening between the inclined surface 24 of the foundation concrete block 11a and the inclined surface of the adjacent foundation concrete block 11b, and bolts can be threaded into the inserts 29 embedded in the inclined surface 24 to secure the blocks. Ready-mixed concrete 70 is then poured into the foundation concrete blocks 11, completing the construction of the foundation portion of the embankment slope.

[0047] Referring to FIG. 7(3), a slope concrete block 64 is installed via a slope direction adjuster 68. In this embodiment, an insert 29 is embedded to which the slope direction adjuster 68 can be attached, allowing the position of the slope structure installed in the slope direction to be adjusted on the surface facing the embankment slope. This facilitates positioning of the slope direction adjuster 68. This facilitates adjusting the position of the slope concrete block 64, improving construction efficiency. The slope direction adjuster 68 can be configured, for example, by having a turnbuckle nut with a fully threaded bolt screwed into one end and a flat-head bolt with threads cut in the opposite direction to the fully threaded bolt screwed into the other end. In this case, the tip of the fully threaded bolt can be threaded into the insert to secure the slope direction adjuster to the foundation concrete block. The length of the slope direction adjuster can then be adjusted by rotating the turnbuckle nut. In this embodiment, two slope direction adjusters 68a and 68b with the same overall length are used, so the inclination angle of the inclined surface portion 24 corresponds to the slope gradient. The slope direction adjuster 68 may also have a structure in which, for example, a fully threaded bolt is inserted into an insert and can be moved in and out within the screw-in range of the insert.

[0048] When two slope direction adjusters 68a, 68b are arranged one above the other, the slope of the slope concrete block 64 can be adjusted according to the slope by changing the lengths of the upper slope direction adjuster 68a and the lower slope direction adjuster 68b. Specifically, when the length of the upper slope direction adjuster 68a is shorter than that of the lower slope direction adjuster 68b, the slope becomes steeper than when the upper and lower slope direction adjusters 68a, 68b are the same length. Conversely, when the length of the upper slope direction adjuster 68a is longer than that of the lower slope direction adjuster 68b, the slope becomes gentler than when the upper and lower slope direction adjusters 68a, 68b are the same length. Note that, although two slope direction adjusters 68a, 68b with the same overall length are used in this embodiment, two types of slope direction adjusters with different overall lengths may also be used. Alternatively, two types of slope direction adjusters with different overall lengths may be fixed to the foundation concrete block in advance, and the length of each slope direction adjuster may be further adjusted.

[0049] Then, the concrete slope blocks 64 are installed, completing the laying of concrete blocks on the embankment slope.

[0050] FIG. 9 is a schematic diagram showing other shapes of foundation concrete blocks used in the concrete block structure of this invention. In this embodiment, the foundation concrete block has a specific shape, but other shapes are also possible. For example, in this embodiment, the foundation concrete block has an inclined surface, but it does not have to have an inclined surface. That is, as shown in FIG. 9(1), foundation concrete block 41 may be configured to have a rectangular shape in side view. Also, in this embodiment, the side of the foundation concrete block facing the embankment slope has a front surface and an inclined surface, but the front surface may not be present. That is, as shown in FIG. 9(2), foundation concrete block 42 may be configured to have a trapezoidal shape in side view. Furthermore, as shown in FIG. 9(3), foundation concrete block 43 may be configured to have a stepped shape in side view. Furthermore, as shown in FIG. 9(4), foundation concrete block 44 may have an inclined surface on the back side as well, so that it has a trapezoidal shape in side view. Furthermore, as shown in Figure 9(5), the foundation concrete block 45 may be configured to have no back or connecting portion and to be L-shaped when viewed from the side. Furthermore, as shown in Figure 9(6), the foundation concrete block 46 may be configured to be triangular when viewed from the side.

[0051] In the above embodiment, a specific number of through holes are formed in the foundation concrete block, but other numbers may be used.

[0052] In the above embodiment, the foundation concrete block has two mounting surfaces of specific shapes at specific positions, but as long as there is a mounting surface that contacts the ground and through-holes that penetrate from there in the height direction, any mounting surface can be applied to the present invention, regardless of its position, number, or shape on the foundation concrete block. Furthermore, there is no particular limitation on the positions at which the through-holes are formed on the mounting surface.

[0053] Furthermore, although the through holes are formed in the vertical direction in the above embodiment, other configurations are also possible, such as forming the through holes at an angle, taking into consideration safety and ease of installation. For example, the position of the lower end of the through hole in the present embodiment may be left as it is, and the through hole may be formed on the side surface toward the rear portion, so as to penetrate all the way to the side surface of the rear portion.

[0054] Furthermore, in the above embodiment, a rotational force is applied, but if no spiral is formed, the height may be adjusted by applying a force from above.

[0055] Furthermore, in the above embodiment, the concrete block structure is provided with a specific number of height adjusters, but other numbers are also acceptable. Two or more are preferable, in which case the installation state will be more stable.

[0056] Furthermore, in the above embodiment, the height adjuster has a spiral groove formed therein and is configured to be screwed into the insert, but it does not have to have a spiral groove. For example, the height adjuster may be tapered so that the exposed length of the lower end can be adjusted by pushing it in from above.

[0057] Furthermore, in the above embodiment, the length of the height adjuster is set to be longer than the through-hole, but it may be the same as or shorter than the through-hole.

[0058] Furthermore, in the above embodiment, the lower end has a spherical shape, but it may have other shapes. For example, instead of the entire lower end being rounded like a sphere, it may have a shape that is partially angular or rounded. It may also have a semicircular shape when viewed from the side. In the case of a semicircular shape when viewed from the side, horizontal movement becomes smoother, making it easier to adjust the position of the foundation concrete block.

[0059] Furthermore, in the above embodiment, the height adjuster is configured so that the lower end can move up and down, but it may be configured so that it can move only downward.

[0060] Furthermore, in the above embodiment, an insert to which the slope direction adjuster can be attached is embedded in the inclined surface portion, but the insert does not have to be used. For example, the tip of the slope direction adjuster may be abutted against the inclined surface portion, or the tip of the slope direction adjuster may be embedded when pouring concrete. Also, an anchor bolt may be embedded instead of the insert.

[0061] Furthermore, in the above embodiment, a specific number of inserts are attached at specific positions, but other numbers and attachment positions may be used.

[0062] Furthermore, in the above embodiment, the entire mounting surface is formed horizontally, but it is sufficient that at least a part of the mounting surface is formed horizontally.

[0063] Furthermore, in the above embodiment, the slope concrete blocks are installed in the slope direction as the slope structure, but other slope structures such as formwork may also be used.

[0064] Furthermore, in the above embodiment, the concrete block structure is installed at the foundation of the embankment slope, but it may also be installed at a foundation other than the embankment slope.

[0065] Furthermore, in the above embodiment, a specific number of slope direction adjusters are attached at specific positions, but other numbers and attachment positions may also be used. [Explanation of symbols]

[0066] 10...Concrete block structure 11...Concrete foundation block 12...Height adjustment tool 21…Placement surface part 24...Slope section 26...Through hole 28...insert 33...spiral groove 34…lower end 35...Upper In addition, the same reference numerals in each drawing indicate the same or corresponding parts.

Claims

1. A concrete block structure installed on a foundation, a foundation concrete block having a mounting surface portion to be placed on an installation location and having a through hole penetrating from the mounting surface portion in a height direction; A concrete block structure comprising a height adjustment device that is inserted into the through hole, and whose lower end can be exposed below the placement surface when force is applied to the upper part, and that can adjust the exposed length of the lower end.

2. The concrete block structure according to claim 1 , wherein the height adjuster has a spiral groove formed therein, and when the upper part is screwed in, the lower end moves up and down.

3. 3. A concrete block structure according to claim 1, wherein the foundation concrete block is installed at the foundation portion of the embankment slope, and has an inclined surface portion that slopes downward from top to bottom toward the embankment slope on the side facing the embankment slope.

4. 3. The concrete block structure according to claim 1, wherein the height adjuster is longer than the through hole, and the upper and lower ends of the height adjuster are exposed from the through hole.

5. 3. The concrete block structure according to claim 1, wherein the lower end of the height adjuster has a spherical shape.

6. 3. A concrete block structure according to claim 1, wherein the foundation concrete block is installed at the base of the embankment slope and has an insert embedded therein to which a slope direction adjustment device can be attached, which can adjust the position of a slope structure installed in the slope direction on the surface opposite the embankment slope.

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