JP2009275403A - Structure and method for reinforcing brick wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure and a method for reinforcing a brick wall, which prevent a structural material from being exposed in exterior and interior appearances, which exert a high reinforcing effect, and which facilitate construction. <P>SOLUTION: A reinforcing material 11 composed of a wire rod is arranged in the joint portion 37 of the brick wall 10. In this case, when the brick wall 10 is seen from a front side, the reinforcing material 11 is arranged in a rectangular wave shape along the joint portion 37. Mountain and valley portions of the reinforcing material 11 positioned on the short side of the brick wall 18 are arranged in a vertical direction, and stacked bricks 18 are symmetrically arranged in such a manner as to be pinched between the two reinforcing materials 11. More specifically, reinforcing materials 12 and 13 are arranged symmetrically with respect to bricks 19, 20, 21, 22 and 23; reinforcing materials 14 and 15 are arranged symmetrically with respect to bricks 24, 25, 26, 27 and 28; and reinforcing materials 16 and 17 are arranged symmetrically with respect to bricks 29, 30, 31, 32 and 33. A tensioning force T is introduced into the reinforcing material 11, and an end of the reinforcing material 11 is fixed to an anchoring plate 52 which is installed on the end surface of the brick wall 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a brick wall reinforcing structure and a reinforcing method.

Many existing brick buildings have low seismic resistance, so in Japan, where earthquakes occur frequently, it is necessary to reinforce brick buildings. For this reason, a method of sticking a steel plate or carbon fiber sheet to the brick wall surface is adopted, but the structural material is exposed to the exterior and interior, which is problematic in terms of design and use of the building. It has become.

Therefore, as a method for reinforcing a brick wall in which the structural material is not exposed to the exterior or the interior, Patent Document 1 discloses a step of forming a chemical injection hole in the brick wall and a high-pressure injection instrument inserted into the chemical injection hole. A step of injecting and curing a fixing chemical solution between the high-pressure injection device and the chemical injection hole and fixing the high-pressure injection device in the chemical injection hole; and injecting the adhesive chemical solution into the nipple member of the high-pressure injection device An invention of a high-pressure injection method for a brittle construction body having a step of connecting a pump and injecting an adhesive chemical into a chemical injection hole is disclosed.

Patent Document 2 discloses an invention of a method for reinforcing a brick wall body in which a crack has occurred. Specifically, a plurality of holes crossing the cracks are drilled in the thickness direction of the brick wall from the surface of the brick wall across the crack, and a primer is filled in the hole, and then a reinforcing bar is placed in the hole. Insert and repair the hole entrance with brick powder.

Furthermore, Patent Literature 3 discloses an invention of a brick wall surface peeling prevention method in which a reinforcing material made of aramid fiber or carbon fiber is disposed only at the joint. In the present invention, various shape patterns of the reinforcing material are manufactured in advance in a factory, and these reinforcing material nets are cut and arranged at the construction site.

JP 2002-242446 A JP 7-217225 A JP 2003-293893 A

However, in the case of the invention described in Patent Document 1 and Patent Document 2, in order to perforate the brick wall and inject the filler, not only the construction takes time but also whether the filler is filled to the deep part of the hole. There is a problem that it cannot be confirmed.

In addition, in the case of the invention described in Patent Document 3, since the reinforcing material is only pasted to the joint portion, there is a problem in strength, and the brick wall due to on-site construction is inevitably accompanied by construction errors, and thus manufactured in advance. When using a reinforcing material net, there is a possibility that a sticking position may deviate from a predetermined position. Furthermore, when the reinforcing range is wide, a plurality of reinforcing material nets must be pasted, so that there is a problem that a plurality of joint portions weak in strength are generated. In addition, in the case of brick walls built in the UK or France, the long side and the small edge of the brick appear, and there is a problem that the shape of the reinforcing material net becomes complicated and the cost increases.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a brick wall reinforcing structure and a reinforcing method in which a structural material is not exposed to the appearance and the interior, shows a high reinforcing effect, and is easy to construct. And

In order to achieve the above-mentioned object, the brick wall reinforcing structure according to the present invention is arranged in a rectangular wave shape in a front view along the joint portion of the brick wall, and a reinforcing material made of a wire is embedded in the joint portion in a tension state. It is characterized by being.

Here, “front view” refers to a case where a brick wall is viewed from the front, and “rectangular wave shape” refers to a rectangular peak and flat peaks and valleys alternately repeated in a plan view. Say the shape. Further, the “tensioned state” refers to a state in which the reinforcing material is tight and does not loosen.

In the present invention, since the reinforcing material is embedded in the joint portion, the structural material is not exposed to the external appearance or the interior, and the design property that the brick wall brings out is not impaired. In addition, since the reinforcing material is in a tension state, there is no play of the reinforcing material, the reinforcing material works effectively against the external force that acts on the brick wall, and the tension force introduced into the reinforcing material is increased to Prestress in the compression direction can also be applied. Furthermore, even when the reinforcing range is wide, it is possible to reinforce using a single reinforcing material without providing a joint. In addition, by arranging a reinforcing material made of a wire in a rectangular wave shape in front view along the joint portion of the brick wall, a reinforcing effect can be expected in both the horizontal direction and the vertical direction with one reinforcing material. In addition, as the reinforcing material, carbon fiber or aramid fiber processed into a wire can be used.

In the brick wall reinforcing structure according to the present invention, the reinforcing material may be arranged along three sides of a quadrangle formed of two or more adjacent bricks constituting the brick wall.
Here, the “rectangle” is a virtual square formed by two or more adjacent bricks when the brick wall is viewed from the front.
In the present invention, the reinforcing material is disposed so as to surround the adjacent bricks, so that the adjacent bricks are not separated from each other and the joint portion is prevented from being broken.

Further, in the brick wall reinforcing structure according to the present invention, the reinforcing material may be arranged symmetrically across a brick constituting the brick wall.
In the present invention, the reinforcing members are symmetrically arranged with the bricks interposed therebetween, so that the reinforcing member restrains the movement of the bricks sandwiched between the reinforcing members and prevents the brick wall from being destroyed.

In the brick wall reinforcing structure according to the present invention, it is preferable that the reinforcing material is covered with a resin.
The present invention protects a reinforcing material by coating the reinforcing material with a resin, eliminates a gap between the reinforcing material and a brick, and transmits stress through the resin. As the resin, a thermosetting resin such as an epoxy resin can be used.

The method for reinforcing a brick wall according to the present invention includes a first step of forming a groove in the joint portion along the joint portion of the brick wall, and a reinforcing material made of a resin-coated wire rod in front of the groove. It is characterized by comprising a second step of arranging in a rectangular wave shape as viewed, a third step of introducing tension to the reinforcing member, and a fourth step of closing the groove with a joint material.

In the present invention, a groove is formed in the joint portion, and the reinforcing material is simply placed and tensioned in the groove, so that not only the construction is easy, but also the reinforcing material in a tensioned state is embedded in the joint portion. Compared with the method of sticking to the joint part, a high reinforcing effect can be exhibited. In addition, mortar etc. can be used as a joint material.

Further, in the method for reinforcing a brick wall according to the present invention, a corner spacer having a convex outer peripheral surface is installed at a corner portion of the brick constituting the brick wall, and the reinforcement is performed along the outer peripheral surface of the corner spacer. It is preferable to arrange the material.
In the present invention, since the reinforcing material is arranged along the convex curved surface of the corner spacer installed at the corner portion of the brick, when the tension is introduced into the reinforcing material, the friction at the corner portion is reduced and no stress loss occurs.

In the method for reinforcing a brick wall according to the present invention, it is preferable that the reinforcing material portion located at a corner portion of the brick constituting the brick wall is not covered with resin.
In this invention, since the reinforcement material location located in the corner part of a brick is not coat | covered with resin, a reinforcement material can be easily bent along a corner part.

In the brick wall reinforcing structure according to the present invention, since the reinforcing material is embedded in the joint portion, the structural material is not exposed to the external appearance or the interior, and the design property that the brick wall brings out is not impaired. Moreover, the reinforcing effect which consists of a wire is arrange | positioned in rectangular wave shape by a front view along the joint part of a brick wall, and the reinforcement effect can be anticipated about both the horizontal direction and the vertical direction with one reinforcing material.

In the method for reinforcing a brick wall according to the present invention, a groove is formed in the joint portion, and the reinforcing material is simply placed and tensioned in the groove, so that the construction is not only easy, but the reinforcing material in the tension state is jointed. Since it embeds in a part, a higher reinforcement effect can be exhibited compared with the method of sticking a reinforcing material on a joint part.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. In the following description, 18 is used as a symbol indicating an arbitrary brick constituting the brick wall, and 11 is used as a symbol indicating an arbitrary reinforcing material disposed on the brick wall. Moreover, the broken line and the dashed-dotted line in FIG.1 and FIG.6 are used in order to distinguish a reinforcing material instead of a hidden line or a center line.

FIG. 1 shows a schematic view of a brick wall 10 structurally reinforced by a brick wall reinforcing structure according to an embodiment of the present invention as seen from the front. Here, the brick wall reinforcement structure according to an embodiment of the present invention will be described by taking an example of a brick wall built in the UK. British loading is a method of stacking bricks so that when the brick wall is viewed from the front, the steps where only the long side of the brick appears and the steps where only the small edge appears are alternated. It is often found in civil engineering structures and railway-related facilities because it has higher strength and uses less brick than French piles, where the long and small sides alternate.

In the brick wall reinforcing structure according to the embodiment of the present invention, the reinforcing material 11 made of a wire is disposed on the joint portion 37 of the brick wall 10. At this time, when the brick wall 10 is viewed from the front, the reinforcing material 11 is arranged in a rectangular wave shape along the joint portion 37. In the present embodiment, the ridges and valleys of the reinforcing material 11 located on the short side of the brick 18 are arranged in the vertical direction, and the bricks 18 laminated with the two reinforcing materials 11 are arranged. Arrange them symmetrically so as to sandwich them. Specifically, the reinforcing material 12 and the reinforcing material 13 are made of bricks 19, 20, 21, 22 and 23, the reinforcing material 14 and the reinforcing material 15 are made of bricks 24, 25, 26, 27 and 28, the reinforcing material 16 and the reinforcing material 17. Are arranged symmetrically with respect to the bricks 29, 30, 31, 32 and 33, respectively.

A tension force T (tensile force) is introduced into the reinforcing material 11, and the ends of the reinforcing material 11 are fixed to the fixing plates 52 installed on both end surfaces (upper surface and lower surface) of the brick wall 10. The tension force T is introduced in order to make the reinforcing material 11 tight and not loosened, but the tension force T is increased so that the prestress in the compression direction acts on the brick wall 10. Moreover, the bending strength of the brick wall 10 can be improved by introducing prestress. In addition, as the reinforcing material 11, continuous fibers such as carbon fiber, aramid fiber, and glass fiber having high strength, high elasticity, and heat resistance can be used.

FIG. 2 shows a cross section of the joint portion 37. The reinforcing material 11 is embedded in the joint portion 37 in a tensioned state. The reinforcing material 11 is covered with a resin 11a such as an epoxy resin, and stress is transmitted between the reinforcing material 11 and the adjacent bricks 18 and 18 through the resin 11a.

FIG. 3 shows details of the corner portion of the brick 18. A corner spacer 39 (see FIG. 4) whose outer peripheral surface 39 a is a convex curved surface is installed at a corner where the reinforcing member 11 bends, and the reinforcing member 11 is disposed along the outer peripheral surface 39 a of the corner spacer 39. The corner spacer 39 is formed by notching a part of a plastic cylinder in the axial direction to form a notch 39b that fits with the corner of the brick 18 so that the reinforcing material 11 does not come off. Both side edges 39c of 39a protrude in the radial direction. Here, the curvature radius of the outer peripheral surface 39a is preferably 20 mm or more.
In addition, in order to make the reinforcing material 11 easy to bend, a portion in contact with the corner spacer 39 is not covered with the resin 11a (see FIG. 5).

When an external force is applied to the brick wall 10 and a horizontal tensile force or shearing force is applied to the brick wall 10, the reinforcing material 11 disposed in the horizontal joint portion 37 resists the tensile force or shearing force and the brick. The destruction of the wall 10 is prevented. In addition, when a vertical tensile force acts on the brick wall 10, the brick wall 10 is prevented from being destroyed by the prestress in the compression direction introduced into the brick wall 10 via the reinforcing material 11.
In addition, in the present embodiment, the reinforcing material 11 is arranged symmetrically with respect to the brick 18 constituting the brick wall 10, so that the movement of the brick 18 sandwiched between the reinforcing material 11 is restrained by the reinforcing material 11. This prevents the brick wall 10 from being destroyed.

Next, a method for reinforcing a brick wall according to the present embodiment will be described with reference to FIGS.
(1) A groove (not shown) is formed in the joint portion 37 along the joint portion 37 of the brick wall 10. The depth of the groove is about 1 cm to 4 cm, although it depends on the number of reinforcing members 11 to be embedded. In addition, a corner spacer 39 is installed at the corner portion of the brick 18 in contact with the reinforcing material 11.
(2) The reinforcing material 11 made of a wire covered with the resin 11a is placed in the groove. At this time, when the brick wall 10 is viewed from the front, the reinforcing material 11 is arranged in a rectangular wave shape along the joint portion 37, and the corner portion of the brick 18 is along the outer peripheral surface 39 a of the corner spacer 39. The reinforcing material 11 is arranged.
(3) Pull the reinforcing material 11 to introduce a tension force T to the reinforcing material 11 and fix the end of the reinforcing material 11 to the fixing plate 52 installed on the end surface of the brick wall 10. The fixing method is not particularly limited, and for example, a method used for fixing a PC strand can be used.
(4) Fill the groove of the joint portion 37 with a joint material 38 such as mortar to close the groove (see FIG. 2).

Next, a brick wall reinforcing structure according to another embodiment of the present invention will be described.
FIG. 6 is a schematic diagram showing another arrangement pattern of the reinforcing material 11. In the present embodiment, when the reinforcing members 47 and 48 are disposed on the reinforcing layer of the brick wall 10, the peaks and valleys of the reinforcing members 47 and 48 are disposed in the horizontal direction, and the brick wall 10 ( Here, a reinforcing layer is formed, and reinforcing members 47 and 48 are arranged along three sides of a quadrangle in a front view formed by two bricks 18 adjacent in the horizontal direction. Specifically, the reinforcing material 47 includes a quadrangle formed by two adjacent bricks 40 and 41, a quadrangle formed by two adjacent bricks 42 and 43, and two adjacent bricks 44, The reinforcing material 48 is formed by a quadrangle formed by two adjacent bricks 41 and 42 and two adjacent bricks 43 and 44. They are arranged along three sides of a quadrangle and a quadrangle formed by two adjacent bricks 45 and 46. In the present embodiment, the reinforcing members 49, 50, 51 are arranged in the vertical direction along the joint portions 37 of the brick wall 10.

In the present embodiment, by disposing the reinforcing material 11 so as to surround the adjacent bricks 18, the joints 37 are prevented from breaking so that the adjacent bricks 18 are not separated.

Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations described in the above-described embodiments, and is considered within the scope of the matters described in the claims. Other embodiments and modifications are also included. For example, the arrangement pattern of the reinforcing material is not limited to the above embodiment, and various arrangement patterns are possible within the scope of the present invention. Moreover, in the said embodiment, although the reinforcing material previously coat | covered with resin was used, after arrange | positioning a reinforcing material to the groove | channel of a joint part, you may fill resin with a groove | channel. In the above-described embodiment, the description has been given by taking an example of a brick wall in the UK, but it goes without saying that the present invention can also be applied to other types of bricks such as French stack, longitudinal stack and small stack.

It is the schematic diagram which looked at the brick wall reinforce | strengthened by the reinforcement structure of the brick wall which concerns on one embodiment of this invention from the front. It is AA arrow sectional drawing of FIG. FIG. 2 is a detailed view of part B in FIG. 1. It is a perspective view of a corner spacer. It is a schematic diagram of a reinforcing material. It is a schematic diagram for demonstrating the arrangement pattern of the reinforcing material in the reinforcement structure of the brick wall which concerns on other embodiment of this invention.

Explanation of symbols

10: Brick wall, 11, 12, 13, 14, 15, 16, 17: Reinforcing material, 11a: Resin, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33: Brick, 37: Joint part, 38: Joint material, 39: Corner spacer, 39a: Outer peripheral surface, 39b: Notch part, 39c: Side edge part, 40, 41, 42, 43, 44 45, 46: brick, 47, 48, 49, 50, 51: reinforcing material, 52: fixing plate

Claims (7)

A reinforcing structure for a brick wall, characterized in that a reinforcing material made of a wire, which is arranged in a rectangular wave shape in front view along the joint portion of the brick wall, is embedded in the joint portion in a tension state. 2. The brick wall reinforcing structure according to claim 1, wherein the reinforcing material is arranged along three sides of a quadrangle formed of two or more adjacent bricks constituting the brick wall. 3. Brick wall reinforcement structure. The brick wall reinforcement structure according to any one of claims 1 and 2, wherein the reinforcing material is disposed symmetrically with respect to a brick constituting the brick wall. Construction. The brick wall reinforcing structure according to any one of claims 1 to 3, wherein the reinforcing material is coated with a resin. A first step of forming a groove in the joint portion along the joint portion of the brick wall, and a second step of arranging a reinforcing material made of a resin-coated wire in a rectangular wave shape in the front view in the groove; A method for reinforcing a brick wall, comprising: a third step of introducing a tension force to the reinforcing material; and a fourth step of closing the groove with a joint material. 6. The method of reinforcing a brick wall according to claim 5, wherein a corner spacer having a convex outer peripheral surface is installed at a corner portion of the brick constituting the brick wall, and the reinforcing material is provided along the outer peripheral surface of the corner spacer. A method for reinforcing a brick wall, characterized by comprising: The method for reinforcing a brick wall according to any one of claims 5 and 6, wherein the reinforcing material portion located at a corner portion of the brick constituting the brick wall is not coated with a resin. How to reinforce brick walls.

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