Concrete block wall structure

Abstract

To provide a concrete block wall structure that reduces a labor burden and does not require a buttress.SOLUTION: A concrete block wall structure of a block wall 1 in which a plurality of blocks 3 are arranged in rows horizontally and vertically on a foundation 2 and joined by mortar 4 to form joints 5 between them, comprises an L-shaped auxiliary member 10, a long rod-shaped anchor 20, a long rod-shaped reinforcement 30 made of fiber-reinforced resin, and a hanging member 40 having a hanging portion 41 and a male thread 42. The reinforcement 30 is inserted between the blocks 3 as a transverse reinforcement 31 and a longitudinal reinforcement 32, and embedded in the mortar 4. The auxiliary member 10 is placed in contact with the block 3 with a vertical joint 5b in between and is fixed to the foundation 2 by the anchor 20. With the longitudinal reinforcement 32 hanging on the hanging portion 41 of the hanging member 40, the male thread 42 extends outward from the joint 5, and the longitudinal reinforcement 32 and the auxiliary member 10 are fastened by a nut 25 screwed on the male thread 42.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a concrete block wall structure. [Background technology]

[0002] Concrete walls have traditionally been used widely as walls that are built between neighboring houses or between houses and roads to prevent others from entering or exiting and to block views. Concrete walls include concrete block walls made by stacking concrete blocks, wet concrete walls where concrete is poured on-site, and dry concrete walls where precast concrete panels are manufactured in a factory and transported to the site for construction.

[0003] Among these concrete walls, concrete block walls are in high demand. Wet concrete walls require large formwork, while dry concrete walls require heavy precast concrete panels to be transported to the site. This makes it difficult to build wet or dry concrete walls in places where large transport vehicles or cranes cannot enter, such as where the surrounding roads are narrow or where there is little available land area. In contrast, concrete block walls are constructed by stacking small concrete blocks on site, so they have the advantage of being able to be built anywhere.

[0004] Concrete block walls are constructed by laying out reinforcing bars lengthwise and widthwise and stacking concrete blocks while filling them with mortar, and various standards are set out in the Enforcement Ordinance of the Building Standards Act regarding the spacing of vertical and horizontal bars, the height and thickness of the wall, the embedment depth of the foundations, the provision of retaining walls, etc. The applicant has previously proposed a reinforcing structure and wall components to reinforce existing concrete block walls that do not meet the current standards and have problems with earthquake resistance (see Patent Document 1).

[0005] On the other hand, it is possible to construct a new concrete block wall so that it meets the current standards. However, because rebar is heavy, there is a problem that the work of constructing a concrete block wall according to the current standards is very hard work. In addition, the current standards require that buttresses be installed at intervals of 3.4 meters or less, and that the buttresses must protrude from the wall surface by at least one-fifth of the height of the wall. Therefore, if there is not enough space between the house and the wall, the construction of buttresses creates a problem that people cannot pass between the house and the wall. Therefore, the applicant believes that there is a need for a concrete block wall that does not have such a problem and has the same earthquake resistance as a wall that meets the current standards. There is also a movement in the Architectural Institute of Japan to review the current standards for concrete block walls. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6698309 Summary of the Invention [Problem to be solved by the invention]

[0007] In view of the above-mentioned circumstances, an object of the present invention is to provide a concrete block wall structure that can be constructed with reduced labor, does not require buttresses, and exhibits high earthquake resistance. [Means for solving the problem]

[0008] In order to solve the above problems, the concrete block wall structure of the present invention comprises: "A concrete block wall structure is a wall in which multiple concrete blocks are arranged horizontally and vertically on a foundation, and the concrete blocks are joined together with mortar to form joints between them. An auxiliary member formed in an L-shape by a flat base wall portion and a flat standing wall portion; A long rod-shaped anchor; A long rod-shaped bar material made of fiber-reinforced resin and having an uneven surface; a hook member having a hook portion capable of hooking the reinforcing bar and a male screw portion extending from the hook portion; Equipped with The reinforcement members have horizontal reinforcements whose longitudinal direction is oriented in the horizontal direction and vertical reinforcements whose longitudinal direction is oriented in the vertical direction, and are embedded in the mortar in a state in which the horizontal reinforcements are inserted between at least some of the concrete blocks adjacent in the vertical direction, and the vertical reinforcements are inserted between at least some of the concrete blocks adjacent in the horizontal direction, The auxiliary member is in a state where the vertical wall portion faces the vertical reinforcement and abuts against each of the two horizontal concrete blocks with the joints extending in the vertical direction therebetween, and the base wall portion is fixed to the foundation by the anchors, With the hook portion hooked to the vertical reinforcement, the male thread portion of the hook member extends through the joint and the vertical wall portion to the outside, and the vertical reinforcement and the vertical wall portion are fastened together by tightening a nut screwed onto the male thread portion. It is something.

[0009] Here, examples of the "foundation" include "a flat plate extending horizontally," "an L-shaped cross section," and "an inverted T-shaped cross section."

[0010] Examples of the material of the "anchor" include "metal" and "fiber-reinforced resin".

[0011] Examples of the "fiber reinforced resin" include "glass fiber reinforced resin", "carbon fiber reinforced resin", and "aramid fiber reinforced resin".

[0012] Examples of the "hook member" include "a hook having a ring-shaped hook portion" and "a hook having a hook-shaped hook portion".

[0013] In this structure, a plurality of concrete blocks are arranged in rows horizontally and vertically on a foundation, and are joined with mortar. Horizontal bars made of long rod-shaped reinforcing bars are arranged between adjacent concrete blocks vertically, and vertical bars made of long rod-shaped reinforcing bars are arranged between adjacent concrete blocks vertically. As a result, the plurality of concrete blocks are integrated like a single board by the horizontal bars to construct the wall portion of the concrete block wall, and the vertical bars resist the force that tries to knock down the concrete block wall. In this structure, the reinforcing bars forming the horizontal and vertical bars are made of fiber-reinforced resin, which has the same strength as steel bars, so that the wall portion of the concrete block wall structure with the above structure has the same strength as the wall portion (excluding the buttress) of a conventional concrete block wall that uses steel bars.

[0014] Furthermore, in this configuration, the base wall portion of the L-shaped auxiliary member is fixed to the foundation with an anchor, and the vertical wall portion of the auxiliary member is fastened to the vertical reinforcement with a hook member and a nut while the vertical wall portion of the auxiliary member is in contact with the wall surface of the concrete block wall. This allows the auxiliary member to resist forces that tend to topple the concrete block wall, making it more difficult for the concrete block wall to collapse. In other words, the auxiliary member and the hook member function in the same way as buttresses provided in conventional concrete block walls. This makes the buttresses unnecessary.

[0015] As described above, with this configuration, the horizontal and vertical reinforcements made of fiber-reinforced resin, the auxiliary members, and the hook members can adequately resist forces that tend to topple the concrete block wall, making it possible to construct a concrete block wall structure with earthquake resistance equivalent to that of a conventional concrete block wall that has a buttress made of stacked concrete blocks. In other words, it is possible to provide a concrete block wall structure with earthquake resistance equivalent to that of a concrete block wall that meets the standards of the current Enforcement Ordinance of the Building Standards Act.

[0016] Furthermore, with this configuration, because the auxiliary member, which has the same function as a buttress, is L-shaped, only the flat vertical wall portion protrudes from the wall surface, making it possible to reduce the amount of protrusion from the wall surface compared to conventional buttresses. Therefore, even if there is not enough space between the house and the concrete block wall, it is possible to ensure space between the house and the wall for people to pass through.

[0017] Furthermore, according to this configuration, the horizontal and vertical bars are made of fiber-reinforced resin, so they are lighter than the steel bars used in conventional concrete block walls. Also, as mentioned above, because buttresses are not required, the amount of work involved in stacking the concrete blocks is reduced. Furthermore, because the male threads of the hanging members protrude through the joints between the concrete blocks, there is no need to process the concrete blocks to pass the male threads through them. As a result, the labor required to build (construct) a concrete block wall structure can be reduced compared to conventional methods.

[0018] Furthermore, the concrete block wall structure according to the present invention has the following features in addition to the above: "Further comprising a foundation nut having a female thread penetrating therethrough and embedded in the foundation, The vertical bar has a male thread formed at least at a lower end thereof, The lower portion of the vertical reinforcement is screwed into the foundation nut, and the lower end of the vertical reinforcement protrudes downward from the foundation. It can be said that.

[0019] Here, examples of "embedding" of the foundation nut include "embedding by casting only the foundation nut together with the foundation," "embedding by casting the foundation nut together with the foundation while it is screwed into the vertical reinforcement," and "embedding by drilling holes in the cast and hardened foundation."

[0020] With this configuration, because the lower ends of the vertical reinforcement protrude below the foundation, the vertical reinforcement is less likely to collapse than if it did not protrude below the foundation, making the concrete block wall more resistant to collapse and further improving the earthquake resistance of the concrete block wall structure.

[0021] In addition, by burying the foundation nuts when pouring concrete, it is not necessary to drill holes in the foundation for the vertical bars to pass through, and it is possible to pierce the vertical bars into the ground later through the foundation nuts, as compared with the case where the vertical bars are pierced into the ground after the concrete is poured to form the foundation. However, when the vertical bars are pierced into the ground to erect them, it is difficult to grasp the pierced length because the lower end of the vertical bar pierced into the ground is not visible. Therefore, if the length of the vertical bars pierced into the ground is shorter than the specified length, the upper end of the vertical bar will be higher than the height of the concrete block wall to be constructed, and extra work will be required to cut off the protruding part of the upper end. On the other hand, if the length of the vertical bars pierced into the ground is longer than the specified length, the upper end of the vertical bar will be lower than the height required for the concrete block wall to be constructed, and the strength of the concrete block wall structure may be reduced. In addition, if the vertical bars are pierced into the ground too far, there is a risk that the vertical bars will fall even if you try to pull them up to the correct position. In contrast, with this configuration, the vertical bars are screwed into the foundation nuts, so the height of the vertical bars from the foundation can be easily adjusted by rotating the vertical bars to match the height of the concrete block wall to be constructed. Even if the vertical bars are thrust too far into the ground, they will not fall off because they are screwed into the foundation nuts. This makes it possible to suppress an increase in the labor burden involved in constructing a concrete block wall structure. Effect of the Invention

[0022] As described above, according to the present invention, a concrete block wall structure can be constructed with reduced labor burden, and a concrete block wall structure can be provided with earthquake resistance that is in no way inferior to conventional concrete block wall structures. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view of a concrete block wall having a concrete block wall structure according to one embodiment of the present invention. [Diagram 2] 2A is a cross-sectional view of the concrete block wall of FIG. 1 cut at a portion of a hanging member along a plane perpendicular to the horizontal direction, and FIG. 2B is an explanatory view showing an enlarged view of the portion of the hanging member in FIG. [Diagram 3] 1, (a) is a cross-sectional view taken along a plane perpendicular to the longitudinal direction at the portion of the hanging member in the concrete block wall of FIG. 1, (b) is an explanatory diagram showing an enlarged view of the portion of the hanging member in (a), and (c) is an explanatory diagram showing the relationship between the male thread portion of the hanging member and the joint from the axial outside of the male thread portion with the auxiliary member omitted. [Figure 4] FIG. 2(a) is a plan view of a fastening member that constitutes the concrete block wall of FIG. 1, and FIG. 2(b) is a perspective view of an auxiliary member that constitutes the concrete block wall of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] A concrete block wall 1, which is an element of a concrete block wall structure that is one embodiment of the present invention, will be described below with reference to Figures 1 to 4. A concrete block wall 1 (hereinafter simply referred to as a "block wall 1") has a plurality of concrete blocks 3 (hereinafter simply referred to as "blocks 3") lined up in the horizontal and vertical directions on a foundation 2, with the blocks 3 joined together with mortar 4, and joints 5 formed between the blocks 3 by the mortar 4. Note that the "horizontal direction" refers to the direction in which the wall extends horizontally, and the "vertical direction" refers to the height direction of the wall.

[0025] In addition to the above-mentioned configuration, the block wall 1 of this embodiment further comprises an L-shaped auxiliary member 10, a long rod-shaped anchor 20, a long rod-shaped reinforcing member 30, a hanging member 40, and a foundation nut 50.

[0026] The foundation 2 has a foundation body 2a, a plurality of anchor embedded parts 2b extending downward from the foundation body 2a in a columnar shape, and a plurality of rod-shaped reinforcing members 2c embedded at least in the foundation body 2a. The foundation body 2a is a flat plate extending horizontally. In this embodiment, concrete is also poured in the area below the auxiliary member 10, and the foundation body 2a and the anchor embedded parts 2b are integrated. The anchor embedded parts 2b are the areas where the anchors 20 are embedded, and their length is longer than that of the anchors 20. The anchor embedded parts 2b can have a diameter of 4 cm to 20 cm. The anchor embedded parts 2b in this embodiment are cylindrical with a diameter of 10 cm. The foundation body 2a and the anchor embedded parts 2b are formed of concrete made by mixing cement, sand, gravel, and water in an appropriate ratio and hardening them. The reinforcing members 2c are embedded in the foundation body 2a in a lattice-like arrangement.

[0027] The block 3 is a rectangular parallelepiped building material made of concrete. In this embodiment, two types of blocks 3 are used: a first block 3A and a second block 3B. The first block 3A has a first recess 3c on one end face in the longitudinal direction among six faces, and the remaining five faces are flat surfaces. The second block 3B has a first recess 3c on one end face in the longitudinal direction among six faces, and a second recess 3d on the upper end face, and the remaining four faces are flat surfaces. The first recess 3c is a groove extending over the entire height of the block 3. The second recess 3d is a groove extending over the entire length of the block 3 in the longitudinal direction.

[0028] The mortar 4 is made by mixing cement, sand, and water in an appropriate ratio and hardening it. The joints 5 are formed to a fixed width. The joints 5 include horizontal joints 5a extending in the lateral direction of the block wall 1 and vertical joints 5b extending in the vertical direction of the block wall 1.

[0029] As shown in FIG. 4(b), the auxiliary member 10 is formed in an L-shape by a flat base wall portion 11 and a flat standing wall portion 12. The base wall portion 11 is rectangular in plan view. The standing wall portion 12 is an elongated rectangle and extends upward from one end side of the base wall portion 11 in the longitudinal direction. The auxiliary member 10 also includes a pair of first side walls 13 extending at right angles from both sides of the base wall portion 11, and a pair of second side walls 14 extending at right angles from both sides of the standing wall portion 12. The first side wall 13 and the second side wall 14 are continuous at a corner of the L-shape. The auxiliary member 10 also includes a triangular reinforcing plate 15 attached to a corner where the first side wall 13 and the second side wall 14 intersect.

[0030] In this embodiment, the base wall portion 11 and the pair of first side walls 13, and the standing wall portion 12 and the pair of second side walls 14 are each formed of a channel material having a U-shaped cross section. The auxiliary member 10 in this embodiment is formed of metal, and each member is joined by welding to provide high rigidity. In addition, the surface of the auxiliary member 10 is plated or coated to improve rust resistance and weather resistance.

[0031] Furthermore, the auxiliary member 10 is provided with a plurality of anchor holes 16 penetrating the base wall portion 11, and a plurality of hanging member holes 17 penetrating the standing wall portion 12. The multiple hanging member holes 17, which will be described in detail later, are provided at intervals that correspond to the intervals of the horizontal joints 5a in the block wall 1 to be constructed.

[0032] As shown in Fig. 2, the anchor 20 is in the form of a long rod, with a male thread formed at least at the upper end, and with unevenness formed on the remaining surface to increase friction. The length of the anchor 20 can be 40% to 100% of the height of the block wall 1, and is preferably 50% or more. The anchor 20 of this embodiment is made of glass fiber reinforced resin formed into a long rod, and has the advantages of excellent corrosion resistance and rust prevention, high tensile strength, light weight, no conductivity, and no static electricity. In this embodiment, the diameter of the anchor 20 is preferably 25 mm to 30 mm. As the anchor 20, in addition to resin, deformed steel bars can also be used.

[0033] The reinforcing bar 30 is made of a long rod-shaped fiber-reinforced resin and has an uneven surface. In the reinforcing bar 30 of this embodiment, a male thread is formed over the entire length as the uneven surface. The reinforcing bar 30 is used as the horizontal bar 31 and the vertical bar 32. The length of the horizontal bar 31 is preferably 120% or more of the distance between two auxiliary members 10 adjacent in the horizontal direction. The length of the vertical bar 32 can be 110% to 200% of the height of the block wall 1, and is preferably 120% or more. In this embodiment, the lower end of the vertical bar 32 is sharpened. The reinforcing bar 30 of this embodiment is made of glass fiber-reinforced resin and has the same strength as the reinforcing bar used in the conventional concrete block wall. In this embodiment, the diameter of the reinforcing bar 30 is preferably 20 mm to 32 mm. The horizontal bar 31 and the vertical bar 32 may have the same diameter or different diameters.

[0034] The hanging member 40 has a ring-shaped hanging portion 41 and a male threaded portion 42 extending from the hanging portion 41 (see FIG. 4(a)). The inner diameter of the hanging portion 41 is larger than the diameter of the vertical strip. The male threaded portion 42 is male threaded over the entire length of the outer circumferential surface. The hanging member 40 is made of metal, and the surface is plated or coated to improve rust resistance and weather resistance. The hanging member 40 may also be made of stainless steel.

[0035] The foundation nut 50 has a female screw hole that penetrates therethrough, and the female screw hole screws into the vertical reinforcement 32. The foundation nut 50 has the same length as the height of the foundation main body 2a of the foundation 2.

[0036] Next, a concrete block wall structure constructed using the block wall 1 configured as described above will be described. Here, the block wall 1 shown in Fig. 1 will be used as an example. The block wall 1 is located at the boundary between a road and a site. The height of the ground G of the site is higher than the height of the road surface R of the road, and the difference therebetween is greater than the height of the base wall portion 11 side (first side wall 13) of the auxiliary member 10. The top surface of the foundation 2 of the block wall 1 is flush with the road surface R.

[0037] A block wall 1 has blocks 3 arranged in multiple rows horizontally and 10 rows vertically on a foundation 2, with adjacent blocks 3 joined together with mortar 4. In the following explanation, one horizontal end of the block wall 1 will be referred to as the base end, and the opposite end as the tip end.

[0038] For example, the size of one block 3 may be 390 mm in horizontal length, 190 mm in vertical length (height), and 120 mm in length (thickness) perpendicular to the face of the block wall 1. The width of the joints 5 between the blocks 3 may be 10 mm for both the horizontal joints 5a and the vertical joints 5b.

[0039] The horizontal joints 5a extend across the entire horizontal length of the block wall 1, and the vertical joints 5b extend across the entire vertical height. The horizontal joints 5a and the vertical joints 5b intersect in a cross shape, forming a so-called imojoint.

[0040] In this block wall 1, the blocks 3 in the odd-numbered rows and the block 3 in the top row from the bottom are composed only of second blocks 3B, and the blocks 3 in the remaining rows are composed only of first blocks 3A. In addition, in the horizontal direction of the block wall 1, the first recesses 3c of the blocks 3 in the odd-numbered rows face toward the tip side from the base end to the tip, and the first recesses 3c of the blocks 3 in the even-numbered rows face toward the base end. Therefore, the blocks 3 are arranged so that their first recesses 3c face each other in the horizontal direction.

[0041] In addition, in the block wall 1, in the stage constituted only by the second blocks 3B, horizontal reinforcement 31 of the same length as the overall length of the block wall 1 is arranged in each second recess 3d. Furthermore, in the block wall 1, vertical reinforcement 32 is arranged in each portion where the first recesses 3c face each other. The vertical reinforcement 32 is arranged at regular intervals (800 mm intervals in this embodiment) in the horizontal direction. In this embodiment, the upper ends of the vertical reinforcement 32 coincide with the upper end of the block wall 1, and the lower ends penetrate the foundation 2 and are buried in the ground below.

[0042] In the block wall 1, the first recess 3c and the second recess 3d of the block 3 are filled with the same mortar 4 as that forming the joint 5. Therefore, the horizontal bars 31 and the vertical bars 32 are embedded in the mortar 4. The vertical bars 32 are arranged on the side opposite to the side on which the auxiliary member 10 is arranged, with the horizontal bars 31 between them. In other words, the horizontal bars 31 pass between the vertical bars 32 and the auxiliary member 10. In this embodiment, the horizontal bars 31 are made of reinforcing bars 30 having a cross-sectional diameter of 22 mm, and the vertical bars 32 are made of reinforcing bars 30 having a cross-sectional diameter of 25 mm. Although not shown in the figure, the horizontal bars 31 and the vertical bars 32 are tied together at the intersections with each other by metal wires or durable synthetic fiber wires.

[0043] In the block wall 1, the auxiliary members 10 are arranged at each of the plurality of locations where the vertical reinforcement bars 32 are arranged. The base wall portion 11 of the auxiliary member 10 is fixed to the ground via the foundation 2 by the anchors 20, and the vertical wall portion 12 is in contact with the blocks 3 on both sides with the vertical joints 5b between them. The base wall portion 11 is embedded in the ground penetrating the foundation 2, and a nut 25 is screwed to the anchor 20 protruding from below through the anchor hole 16, and the base wall portion 11 is fixed to the foundation 2 by tightening the nut 25. A washer 26 is interposed between the base wall portion 11 and the nut 25. The base wall portion 11 and the pair of first side walls 13 of the auxiliary member 10 are embedded in the ground of the site. In this embodiment, the distance between the two auxiliary members 10 in the horizontal direction is 3200 mm (for every four vertical reinforcement bars 32).

[0044] Here, the foundation 2 will be described. The foundation 2 is provided in a portion of the ground on the site side at the boundary between the road and the site, dug down from the ground G below the road surface R. In this embodiment, the upper surface of the foundation main body 2a is provided at the same height as the road surface R. It is preferable that the height of the foundation main body 2a is 150 mm or more. The foundation 2 is formed by assembling a formwork for forming the outer periphery of the foundation main body 2a in a portion where the ground is dug down, and then pouring concrete into the formwork. In this embodiment, the width of the foundation main body 2a is about 400 mm.

[0045] More specifically, before concrete is poured into the formwork of the foundation 2, a pile hole deeper than the length of the anchor 20 is excavated at a predetermined location where the anchor 20 is to be embedded, and the anchor 20 is held in a predetermined position in the pile hole via the formwork, and a plurality of foundation nuts 50 are arranged at a certain interval (here, 800 mm interval) in the horizontal direction. In addition, a plurality of reinforcing members 2c are arranged in a lattice shape in the formwork. At this time, if the reinforcing members 2c interfere with the anchor 20 or the foundation nuts 50, the reinforcing members 2c are bent or shifted. In this embodiment, steel bars are used as the reinforcing members 2c, but rod-shaped fiber-reinforced resin may be used as the reinforcing members 2c, similar to the reinforcing members 30. When the reinforcing members 2c are made of fiber-reinforced resin, they are lightweight, so that the labor burden can be reduced.

[0046] In this state, concrete is poured into the formwork until it is flush with the road surface R, and the concrete hardens to form the foundation 2. In this embodiment, the inside diameter of the pile hole is 10 cm, and with the anchor 20 inserted in the pile hole, concrete is filled to form the anchor embedded part 2b. The anchor 20 in this embodiment has a diameter of 25 mm and a length of 1500 mm.

[0047] Once the foundation 2 is formed, multiple blocks 3 are lined up horizontally and vertically while being joined with mortar 4. At this time, vertical reinforcement bars 32 are screwed into foundation nuts 50 embedded in the foundation 2, penetrating the foundation nuts 50, and then thrust into the ground to erect them. The vertical reinforcement bars 32 are thrust into the ground so that the height from the top surface to the top end of the foundation 2 matches the height of the block wall 1 to be constructed.

[0048] Alternatively, the foundation nut 50 may be screwed onto the vertical reinforcement 32 in advance, and concrete may be poured to form the foundation 2 with the vertical reinforcement 32 pierced into the ground. For example, the foundation nut 50 may be screwed onto the male thread of the vertical reinforcement 32 and positioned at a position on the vertical reinforcement 32 at a predetermined length where the vertical reinforcement 32 is to be pierced into the ground, so that the vertical reinforcement 32 can be pierced into the ground using the foundation nut 50 as a guide. This can prevent an increase in the labor required for constructing the block wall structure. In this case, the length of the foundation nut 50 may be shorter than the height of the foundation main body 2a.

[0049] In the block wall 1, a plurality of hanging members 40 are provided in the horizontal direction at positions where the auxiliary members 10 are provided. In other words, a plurality of hanging members 40 are provided at the vertical joints 5b where the auxiliary members 10 are arranged. Here, a case is illustrated in which a plurality of hanging members 40 are provided at the positions of the first, third, fifth, seventh, and eighth horizontal joints 5a from the bottom along the corresponding vertical joints 5b.

[0050] In each of the hanging members 40, the male screw portion 42 extends outward through the joint 5 and the hanging member hole 17 of the auxiliary member 10, with the vertical reinforcement 32 inserted through the ring-shaped hanging portion 41. A nut 45 is screwed into the male screw portion 42 from the tip, and the vertical reinforcement 32 and the vertical wall portion 12 are fastened by tightening the nut 45. A washer 46 is inserted between the vertical wall portion 12 and the nut 45. The multiple hanging member holes 17 in the auxiliary member 10 are drilled to match the height of the horizontal joint 5a where the hanging member 40 is to be provided. Before stacking the upper block 3, the hanging member 40 is embedded in the mortar 4 at a predetermined position by passing the hanging portion 41 from above the vertical reinforcement 32.

[0051] In the present embodiment, the hanging member 40 has a male screw portion 42 with a screw diameter of 12 mm. This screw diameter (12 mm) is larger than the width (10 mm) of the joint 5, but since the hanging member 40 is provided at the location where the horizontal joint 5a and the vertical joint 5b intersect, the male screw portion 42 can be extended to the outside without cutting the block 3 (see FIG. 3(c)).

[0052] Although not shown in the figures, a cover may be provided to cover the portion of the auxiliary member 10 above the ground surface G. This can improve the appearance of the block wall 1 on the site side. Although not shown in the figures, after the auxiliary member 11 is installed, concrete is poured so as to hide the base wall portion 11 (first side wall 13).

[0053] In the block wall 1, multiple auxiliary members 10 are provided so that the interval between adjacent auxiliary members 10 is 3400 mm or less. In addition, the distance from the lateral end of the block wall to the auxiliary members 10 is set to 800 mm or less.

[0054] The interval between the horizontal bars 31 in the vertical direction is preferably 80 cm or less, and more preferably 60 cm or less. The interval between the vertical bars 32 in the horizontal direction is preferably 80 cm or less, and more preferably 40 cm or less.

[0055] As described above, according to this embodiment, multiple blocks 3 joined with mortar 4 are integrated like a single board by the horizontal reinforcement 31 to construct the wall portion of the block wall 1, and the vertical reinforcement 32 resists forces that attempt to collapse the block wall 1. In this embodiment, the reinforcing members 30 forming the horizontal reinforcement 31 and vertical reinforcement 32 are made of fiber reinforced resin, and since this fiber reinforced resin has the same strength as steel bars, the wall portion of this block wall 1 has the same strength as the wall portion (excluding the buttress) of a conventional concrete block wall that uses steel bars.

[0056] According to this embodiment, the base wall portion 11 of the L-shaped auxiliary member 10 is fixed to the ground via the foundation 2 by the anchor 20, and the vertical wall portion 12 of the auxiliary member 10 is fastened to the vertical reinforcement 32 by the hook member 40 and the nut 45 while the vertical wall portion 12 of the auxiliary member 10 is in contact with the wall surface of the block wall 1. The anchor 20 is a long rod-like member that is inserted deep into the ground, so a considerable force is required to pull it out. This allows the auxiliary member 10 to resist the force that tries to knock down the block wall 1, making it more difficult for the block wall 1 to collapse. In other words, the auxiliary member 10 and the hook member 40 act in the same way as a buttress provided in a conventional concrete block wall. Therefore, the buttress is not necessary.

[0057] As described above, according to this embodiment, the horizontal reinforcements 31 and vertical reinforcements 32 made of fiber-reinforced resin, the auxiliary members 10 and the hanging members 40 can sufficiently resist forces that tend to topple the block wall 1, making it possible to construct a concrete block wall structure that has earthquake resistance equivalent to that of a conventional concrete block wall that has a buttress made of stacked concrete blocks. In other words, it is possible to provide a concrete block wall structure that has earthquake resistance equivalent to that of a concrete block wall that meets the standards of the current Enforcement Ordinance of the Building Standards Act.

[0058] Furthermore, according to this embodiment, because the auxiliary member 10, which has the same effect as a buttress, is L-shaped, only the standing wall portion 12 and the second side wall 14 protrude from the wall surface, making it possible to reduce the amount of protrusion from the wall surface compared to conventional buttresses. Therefore, even if there is not enough space between the house and the block wall 1, it is possible to ensure space between the house and the buttress 1 so that people can pass through.

[0059] Furthermore, according to this embodiment, the horizontal reinforcement 31 and the vertical reinforcement 32 are made of reinforcing bars 30 formed from fiber-reinforced resin, and therefore are lighter than the steel bars used in conventional concrete block walls. Also, as described above, buttresses are not required, and therefore the amount of work involved in stacking the concrete blocks 3 is reduced accordingly. Furthermore, the male threaded portion 42 of the hanging member 40 protrudes through the joints 5 between the blocks 3, and therefore there is no need to process the blocks 3 to pass the male threaded portion 42 through. For these reasons, the labor burden involved in building (constructing) a concrete block wall structure can be reduced compared to the past.

[0060] Furthermore, according to this embodiment, because the lower ends of the vertical reinforcements 32 protrude below the foundation 2, the vertical reinforcements 32 are less likely to collapse compared to a case in which the vertical reinforcements 32 do not protrude below the foundation 2. This makes it possible to make the block wall 1 more resistant to collapse, and to further improve the earthquake resistance of the concrete block wall structure.

[0061] In addition, according to this embodiment, since the foundation nut 50 is buried when concrete is poured to form the foundation 2, there is no need to drill holes in the foundation 2 for passing the vertical bars 32 through, and the vertical bars 32 can be driven into the ground later through the foundation nut 50, as compared with the case where the vertical bars 2 are driven into the ground after the concrete is poured to form the foundation 2. At this time, since the vertical bars 32 are screwed into the foundation nut 50, the height of the vertical bars 32 from the foundation 2 can be easily adjusted by rotating the vertical bars 32, and can be made to correspond to the height of the block wall 1 to be constructed. Even if the vertical bars 32 are driven too far into the ground, the vertical bars 32 will not fall because they are screwed into the foundation nut 50. As a result, the increase in the labor burden required for constructing a concrete block wall structure can be suppressed.

[0062] Furthermore, according to this embodiment, the anchors 20 are embedded in the anchor embedded parts 2b that extend downward in a columnar shape from the foundation main body 2a in the foundation 2, so that the resistance to pulling out the anchor 20 from the ground can be made greater than in a case where the anchor embedded parts 2b are not provided. This makes it more difficult for the block wall 1 to collapse, and makes it possible to construct a concrete block wall structure that is highly earthquake-resistant.

[0063] Furthermore, according to this embodiment, concrete is poured into the first side wall 13 of the auxiliary member 10 so that the first side wall 13 is buried below the ground level G, and therefore the first side wall 13 does not obstruct passage.

[0064] Furthermore, according to this embodiment, since nothing is provided on the side of the block wall 1 opposite the auxiliary member 10, the wall has the same appearance as a conventional concrete block wall and does not impair the decorativeness of the blocks 3.

[0065] Furthermore, according to this embodiment, the horizontal bars 31 are passed between the vertical bars 32 and the vertical wall portion 12 of the auxiliary member 10, so that even if the horizontal bars 31 attempt to move in a direction away from the vertical wall portion 12, the movement of the horizontal bars 31 can be prevented by the vertical bars 32 via the hanging members 40, making it possible to make the block wall 1 less likely to collapse.

[0066] Furthermore, according to this embodiment, the vertical wall portions 12 of the auxiliary members 10 abut against the blocks 3 on both sides with the vertical joint 5b in between, so that more blocks 3 can be supported compared to the case where the vertical wall portions 12 abut against the blocks on only one side, and a concrete block wall structure that is less likely to collapse can be constructed.

[0067] However, if the hanging member 40 is provided halfway along the height of one block 3, it is necessary to continue to hold the hanging member 40 at the desired height until the mortar 4 hardens, which may increase the labor burden. In contrast, in this embodiment, the hanging member 40 is provided at the intersection of the horizontal joint 5a and the vertical joint 5b, and the diameter of the male thread portion 42 of the hanging member 40 is made slightly larger than the width of the joint 5. Therefore, when the hanging member 40 is embedded in the mortar 4, the two lower blocks 3 prevent the hanging member 40 from moving downward, and the hanging member 40 can be maintained at the desired height until the mortar 4 hardens, thereby suppressing an increase in the labor burden.

[0068] The present invention has been described above with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various improvements and design changes are possible without departing from the spirit of the present invention, as described below.

[0069] For example, in the above embodiment, the hook portion 41 of the hook member 40 is ring-shaped, but this is not limited thereto, and the hook portion may be hook-shaped. Also, in the above embodiment, the thread diameter of the male thread portion 42 of the hook member 40 is slightly larger than the width of the joint 5, but this is not limited thereto, and the hook member may have a male thread portion with a thread diameter smaller than the width of the joint 5.

[0070] In addition, in the above embodiment, the foundation is provided with a flat foundation body 2a extending horizontally, but this is not limited to this, and the foundation may be provided with a foundation body having an L-shaped cross-sectional shape, or a foundation body having an inverted T-shaped cross-sectional shape.

[0071] In the above embodiment, the diameter of the columnar anchor embedded portion 2b in the foundation 2 is 10 cm, but the present invention is not limited to this, and the diameter of the anchor embedded portion 2b may be within a range of 4 cm to 20 cm. When the diameter of the anchor embedded portion 2b is set to 4 cm to 10 cm, the work of excavating a pile hole for forming the anchor embedded portion 2b becomes easier, and the labor burden can be reduced. In this case, pouring mortar (non-shrink mortar) into the pile hole before pouring concrete into the formwork of the foundation can avoid poor pouring.

[0072] Furthermore, in the above embodiment, concrete is poured under the auxiliary member 10 to integrate the foundation body 2a and the anchor embedded portion 2b, but this is not limiting, and the foundation body 2a and the anchor embedded portion 2b may be separate bodies without pouring concrete under the auxiliary member 10. In this case, it is desirable to make the upper surface of the anchor embedded portion 2b the same height as the upper surface of the foundation body 2a.

[0073] In the above embodiment, the portion (lower portion) of the vertical reinforcement 32 extending downward from the foundation 2 is embedded in the ground so as to pierce it, but this is not limiting, and a vertical reinforcement embedded portion extending downward from the foundation body in a columnar shape like the anchor embedded portion 2b may be provided in the foundation, and the lower portion of the vertical reinforcement may be embedded in the vertical reinforcement embedded portion. This makes it more difficult for the foundation to collapse, and improves earthquake resistance.

[0074] Furthermore, in the above embodiment, the block wall 1 is shown as having horizontal joints 5a and vertical joints 5b intersecting in a cross shape, but this is not limited to this, and the wall may also have a broken joint (horse joint) in which the horizontal joints and vertical joints intersect in a T shape. [Explanation of symbols]

[0075] 1. Concrete block walls (block walls) 2 Basics 3 Concrete block (block) 4. Mortar 5 Joint 10 Auxiliary Materials 11 Base wall part 12 Vertical wall 20. Anchor 30 Reinforcement 31 Horizontal Stripes 32 Vertical Stripes 40 Hanging member 41 Latch part 42 Male thread 45 Nut 50 Base Nut

Claims

1. A concrete block wall structure is a concrete block wall structure in which a plurality of concrete blocks are arranged in rows in the horizontal and vertical directions on a foundation, and the concrete blocks are joined together with mortar to form joints between the concrete blocks. An auxiliary member formed in an L-shape by a flat base wall portion and a flat standing wall portion; A long rod-shaped anchor; A long rod-shaped bar material made of fiber-reinforced resin and having an uneven surface; a hook member having a hook portion capable of hooking the reinforcing bar and a male screw portion extending from the hook portion; Equipped with The reinforcement members have horizontal reinforcements whose longitudinal direction is oriented in the horizontal direction and vertical reinforcements whose longitudinal direction is oriented in the vertical direction, and are embedded in the mortar in a state in which the horizontal reinforcements are inserted between at least some of the concrete blocks adjacent in the vertical direction, and the vertical reinforcements are inserted between at least some of the concrete blocks adjacent in the horizontal direction, The auxiliary member is in a state where the vertical wall portion faces the vertical reinforcement and abuts against each of the two horizontal concrete blocks with the joints extending in the vertical direction therebetween, and the base wall portion is fixed to the foundation by the anchors, When the hook portion of the hook member is hooked to the vertical reinforcement, the male thread portion extends through the joint and the vertical wall portion to the outside, and the vertical reinforcement and the vertical wall portion are fastened together by tightening a nut screwed onto the male thread portion. A concrete block wall structure characterized by:

2. A foundation nut having a female thread penetrating therethrough and embedded in the foundation is further provided. The vertical bar has a male thread formed at least at a lower end thereof, The lower portion of the vertical reinforcement is screwed into the foundation nut, and the lower end of the vertical reinforcement protrudes downward from the foundation.

2. The concrete block wall structure according to claim 1.

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