JP2022127221A - Reinforcement structure and reinforcement method of masonry wall, and tubular reinforcement member - Google Patents

Abstract

To provide a reinforcement structure and a reinforcement method of a masonry wall and a tubular reinforcement member which can prevent collapse of the masonry wall while keeping an original drainage function of a cobble stone layer, by improving pulling-out resistance by means other than solidification means and by solidifying a part other than the cobble stone layer.SOLUTION: In a reinforcement structure of a masonry wall 20 comprising a natural ground layer 23 behind a stone layer 21 via a cobble stone layer 22, a tubular reinforcement member 10 is positioned behind the stone layer 21, and pulling-out resistant portions 11R, 12R are formed in the stone layer 21 and the natural ground layer 23. The pulling-out resistant portions 11R, 12R are formed of a diameter-expansion mechanism 11 provided in the tubular reinforcement member 10 and/or a solidification material (not shown) discharged from the tubular reinforcement member 10. The tubular reinforcement member 10 is formed to have a hollow multi pipe structure (for example, a hollow double pipe structure comprising a short outer pipe 1 and a long inner pipe 2).SELECTED DRAWING: Figure 3

Description

The present invention belongs to the technical field of reinforcing structures and methods for masonry walls and tubular reinforcing members.

A masonry wall comprising a boulder layer, a back-filled cobblestone layer (hereinafter referred to as the "cobblestone layer"), and a natural ground layer (also referred to as an anchorage layer) is constructed such that the cobblestone layer absorbs external force due to an earthquake and water pressure due to heavy rain. As a result of subsidence, a force acts in the direction of pushing out the stones (intimate stone) from behind the stone layer, and the stone layer cannot maintain its strength against the force, leading to collapse.
Based on this collapse mechanism, for example, in the conventional masonry wall reinforcement techniques disclosed in Patent Documents 1 and 2, holes are drilled from the surface of the boulder layer in the direction of the natural ground for the purpose of preventing subsidence of the cobblestone layer. In other words, by injecting grout material into the drilled hole, or by inserting a reinforcing member and injecting grout material, the cobblestone layer or the like is solidified and reinforced.

However, if the cobblestone layer is allowed to solidify, the expected function of the cobblestone layer to drain rainwater and groundwater from the groundwater layer will be reduced. There is concern about a new problem that the stone layer (Machiseki) will not be able to maintain its bearing strength, leading to the collapse of the masonry wall.
In addition, as for the means of fixing reinforcing members (mainly reinforcing bars) to the ground layer, a solidification material such as grout was conventionally injected into the gap between the reinforcing member and the ground layer. If the mountain layer itself is very leaky ground, or if there is a layer with large voids such as a cobblestone layer adjacent to the ground layer like a masonry wall, a reinforcing member due to insufficient filling of the solidification material There is a problem that the pull-out resistance of the reinforcing member is insufficient, and there is a limit to bearing the pull-out resistance of the reinforcing member only by the solidifying material.

JP-A-2005-9209 JP 2006-283309 A

Therefore, the present invention has been devised in view of the above-mentioned problems of the background art, and its object is to increase the pull-out resistance by means other than the above-mentioned solidification means, Constructability, certainty, safety, and quality that can prevent the collapse of the masonry wall while maintaining the original drainage function of the cobblestone layer by solidifying (stone layer, natural ground layer) To provide a reinforcing structure and a reinforcing construction method for a masonry wall, and a tubular reinforcing member, which are excellent in strength.

As a means for solving the above-mentioned problems, the reinforcement structure for a masonry wall according to the invention described in claim 1 is a reinforcement structure for a masonry wall in which a ground layer is provided behind an artificial stone layer via a cobblestone layer. hand,
A tubular reinforcing member is positioned behind the rock layer, and pull-out resistance portions are formed between the rock layer and the rock layer.

The invention recited in claim 2 is the masonry wall reinforcement structure recited in claim 1, wherein the pull-out resistance portion is provided in the tubular reinforcing member and/or from a diameter expanding mechanism provided in the tubular reinforcing member. It is characterized by being formed of the discharged solidifying material.

A tubular reinforcing member according to the invention described in claim 3 is a tubular reinforcing member used in the reinforcing structure of a masonry wall according to claim 1 or 2, wherein the tubular reinforcing member is formed in the stone layer. A hollow multi-pipe structure having different outer diameters is formed by combining two or more single pipes equipped with a diameter-expanding mechanism that expands the diameter and a single pipe equipped with a diameter-expansion mechanism that expands the diameter in the rock layer. Characterized by

The invention recited in claim 4 is the tubular reinforcing member recited in claim 3, wherein the tubular reinforcing member is formed in a hollow double-tube structure comprising a short outer tube and a long inner tube, and the outer tube is provided with a diameter-expanding mechanism that expands the diameter at the stone layer, the inner pipe has a diameter-expanding mechanism that expands the diameter at the rock layer, and the outer pipe follows the movement of the inner pipe. It is characterized by

The invention recited in claim 5 is the tubular reinforcing member recited in claim 3 or 4, wherein the diameter expanding mechanism is a plurality of slits formed in the circumferential direction of the pipe axis.
The invention recited in claim 6 is the tubular reinforcing member recited in claim 4 or 5, wherein the inner pipe includes a discharge portion for discharging the solidifying material to a portion corresponding to the rock layer and the natural ground layer. is provided.

A method for reinforcing a masonry wall according to the invention recited in claim 7 is characterized in that the tubular reinforcing member according to any one of claims 4 to 6 is inserted into the stone layer, and the inner pipe penetrates the cobblestone layer. and pushing the tubular reinforcing member until it reaches the rock formation;
A short tension rod is attached to the base end of the inner pipe, and by pulling the short tension rod to the near side, the diameter expansion mechanism of the outer pipe that follows the movement of the inner pipe is expanded by the built stone layer. and
After the short tension rod is removed from the inner pipe, a long tension rod is attached to the inner end of the inner pipe, and the long tension rod is pulled forward to expand the diameter of the inner pipe. and a step of expanding the diameter of the base layer.

The invention described in claim 8 is the masonry wall reinforcement method according to claim 7, wherein a solidification material is injected into the stone layer and/or the natural ground layer through the inner pipe. and/or forming a solidified reinforcing body on the outer circumference of the tubular reinforcing member in the natural ground layer.

ADVANTAGE OF THE INVENTION According to the reinforcement structure of a masonry wall, the reinforcement construction method, and the tubular reinforcement member which concern on this invention, the following effects are produced.
(1) By mechanically expanding the diameter of the diameter expanding mechanism provided on the tubular reinforcing member, it is possible to quickly and reliably form a pull-out resisting portion in the rock layer and the natural ground layer. This eliminates the anxiety of insufficient pull-out resistance due to insufficient injection amount due to the grout material. Therefore, it is possible to realize a reinforcement structure for a masonry wall that is excellent in seismic resistance functionality, safety, and quality immediately after construction, as well as workability and reliability.
(2) Since it can be carried out without altering the cobblestone layer, the original drainage function of the cobblestone layer is not impaired. Therefore, it is possible to realize a reinforcing structure for a masonry wall that is more excellent in earthquake resistance functionality, safety, and quality.
(3) Since the pull-out resistance part can be implemented by introducing two types of reinforcement means, the diameter expanding mechanism and the solidification material, the two types of reinforcement can be achieved compared to the case where only the conventional solidification means is used. By cooperating with the means, it is possible to form a pull-out resistance portion (solidified reinforcing body) having even higher strength and rigidity. Therefore, it is possible to realize a reinforcing structure for a masonry wall that is extremely excellent in earthquake resistance functionality, safety, and quality.

FIG. 2 is an explanatory view schematically showing a construction situation of a method for reinforcing a masonry wall according to the present invention; FIG. 2 is a front view (left side view) of FIG. 1; BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which showed roughly the reinforcement construction method and reinforcement structure of the masonry wall based on this invention. 4 is a front view (left side view) of FIG. 3; FIG. 4A to 4D are explanatory diagrams showing step by step the construction status of the method for reinforcing a masonry wall according to the present invention. 1A to 1C are explanatory diagrams showing step by step the construction status of the method for reinforcing a masonry wall according to the present invention. 5B is an enlarged view of the S section of the tubular reinforcing member shown in FIG. 5A; FIG. 5B is an enlarged view of the T portion of the tubular reinforcing member shown in FIG. 5A; FIG. 5B is an enlarged view of the U portion of the tubular reinforcing member shown in FIG. 5A; FIG. 5C is an enlarged view of the V portion of the tubular reinforcing member shown in FIG. 5B; FIG. FIG. 5D is an enlarged view of the W portion of the tubular reinforcing member shown in FIG. 5C; FIG. 5D is an enlarged view of the X section of the tubular reinforcing member shown in FIG. 5C; 6B is an enlarged view of the Y section of the tubular reinforcing member shown in FIG. 6A; FIG. It is explanatory drawing which showed roughly the reinforcement construction method of the masonry wall and the variation of a reinforcement structure which concern on this invention.

Next, a reinforcing structure and method for reinforcing a masonry wall and a tubular reinforcing member according to the present invention will be described with reference to the drawings.

FIGS. 1 to 13 show embodiments of a method of reinforcing a masonry wall 20, a reinforcing structure, and a reinforcing member 10 according to the present invention.
The reinforcing structure of this masonry wall 20 comprises a ground layer 23 behind an artificial stone layer 21 via a cobblestone layer 22 , and a tubular reinforcing member 10 behind the artificial stone layer (Machiseki) 21 . Positioning is performed, and pullout resistance portions 11R and 12R are formed in the rock layer 21 and the ground layer 23 (see FIG. 3). That is, the present invention is carried out in a configuration in which the cobblestone layer 22 is not modified, such as not providing the pull-out resistance portions 11R and 12R in the cobblestone layer 22, so that the original drainage function of the cobblestone layer 22 is not impaired.

In this embodiment, the pull-out resistance portions 11R and 12R are diameter expanding mechanisms 11 and 12 provided in the tubular reinforcing member 10 and a hardening material (not shown) discharged and diffused from the tubular reinforcing member 10. formed. That is, the pull-out resistance portions 11R and 12R according to the present embodiment are constructed by introducing two types of reinforcing means, namely, the diameter expanding mechanisms 11 and 12 and the solidifying material. Even if one of the reinforcing means is used to form the pull-out resistance portions 11R and 12R, a corresponding effect (pull-out resistance) can be obtained.

The tubular reinforcing member 10 is formed in a hollow double-tube structure consisting of a short outer tube 1 and a long inner tube 2, and the outer tube 1 is provided with a diameter-expanding mechanism 11 that expands the diameter of the stone layer 21. , the inner pipe 2 is provided with a diameter-expanding mechanism 12 that expands in the natural layer 23 , and the outer pipe 1 follows the movement of the inner pipe 2 .
In this embodiment, as an example only, the outer tube 1 is a plated steel tube, and has an outer diameter of about 23 mm, a wall thickness of about 3 mm, and a length (axial length) of about 300 mm. 2 uses a plated steel pipe and has an outer diameter of about 17 mm, a wall thickness of about 3 mm, and a length of about 2000 mm. 1 and the outer diameter surface of the inner tube 2 are in contact with each other with almost no gap. 7 and 8, the outer tube 1 is integrated with the inner tube 2 by welding means 13 without aligning their proximal ends (see symbol H). Although the symbol H is 20 mm in this embodiment, it is not limited to this, and the design can be changed as appropriate according to the structural design of the diameter expanding mechanisms 11 and 12 or the form of the withdrawal resistance portions 11R and 12R to be formed. It is possible. The welding means 13 is also not limited to this, and it may be configured so that the outer tube 1 follows (interlocks) with the movement of the inner tube 2 in one direction. ) or the like can be used in the same manner.

The inner tube 2 has a pointed end (see FIG. 9), and female threads 2a and 2b for attaching tension rods 8 and 9 to be described later are formed at the proximal end and the deep end, respectively. It is The internal threads 2a, 2b can also be used for connecting a rod (not shown) of a drilling machine.
Although the outer tube 1 and the inner tube 2 according to the present embodiment are made of plated steel tubes, they are of course not limited to this, and may be made of stainless steel or titanium. Of course, the dimensions such as the length of the outer tube 1 and the inner tube 2 are not limited to those described above, and can be appropriately changed in design according to the form of the masonry wall 20 to which the present invention is applied.

In this embodiment, the diameter expanding mechanisms 11 and 12 are composed of a plurality of (four in this embodiment) linear slits 11a and 12a formed at approximately equal intervals in the circumferential direction of the pipe axis. The portions between the linear slits 11a and 12a adjacent to each other in the direction swell (float) radially as viewed from the tube axial direction to form pull-out resistance portions 11R and 12R.
The slits 11a provided in the outer tube 1 are, in this embodiment, as an example only, each slit 11a having a length of 80 mm, and the bending portions (three portions at both ends and the central portion) are formed in the round holes 11b. Therefore, when viewed from the direction of FIG. 5C, it is implemented in a configuration in which the diameter expands in the shape of an isosceles triangle.
The slits 12a provided in the inner tube 2 are, in this embodiment, as an example only, each slit 12a having a length of 200 mm, and the curved portions (both ends and three locations to the left of the center) are formed in round holes 12b. Therefore, when viewed from the direction of FIG. 6B, the outer tube 1 is expanded in diameter in a right-angled triangular shape, which is larger than the expanded diameter dimension of the outer tube 1 .
The form (size and shape) of the pull-out resistance portions 11R and 12R is not limited to the illustrated example. For example, the enlarged diameter dimensions 11W and 12W (see FIG. 6C) of the pull-out resistance portions 11R and 12R according to the present embodiment are set to 80 mm and 150 mm, respectively, but the design can be appropriately changed according to the structural design. . In addition, it is appropriate to take measures such as providing reinforcing ribs around the slits 11a and 12a to increase the strength and rigidity of the pipe itself.

In this embodiment, in addition to the reinforcing means by the diameter expanding mechanisms 11 and 12, the pull-out resistance portions 11R and 12R are constructed by using reinforcing means for discharging (injecting) the solidifying material. In order to implement the reinforcing means for discharging the solidification material, in the present embodiment, the inner pipe 2 is provided with discharge portions for discharging the solidification material to portions corresponding to the rock layer 21 and the ground layer 23, respectively. (Ejection means) is provided.
Specifically, as shown in Figs. 5C and 12, the discharge portion for discharging to the stone layer 21 has, for example, a plurality of discharge holes 2c having a diameter of about 5 to 8 m on the base end side of the inner pipe 2. The solidifying material injected into the hollow portion of the inner pipe 2 is discharged through the discharge hole 2c of the inner pipe 2 by using the diameter expanding mechanism 11. As shown in FIG. The diameter, arrangement interval, and number of holes of the discharge holes 2c can be appropriately changed according to the structural design.
On the other hand, in the case of the present embodiment, even if no discharge portion is provided as a discharge portion for discharging to the ground layer 23, the solidifying material injected into the hollow portion of the inner pipe 2 is is discharged using the diameter-expanding mechanism 12 whose diameter is expanded in .

Thus, the solidifying material discharged and diffused using the diameter expanding mechanisms 11 and 12 is solidified around the rock layer 21 and the natural ground layer 23 of the tubular reinforcing member 10, and is solidified in lumps. The solidified reinforcing body, and thus the pull-out resistance portions 11R and 12R, are exhibited, and due to the resistance due to the wedge (anchor) effect of the pull-out resistance portions 11R and 12R, the pull-out resistance is insufficient due to the insufficient injection amount of the conventional fluid grout material. It is possible to realize a reinforced structure for masonry walls that is excellent in earthquake-resistant functionality, safety, and quality.

Next, a method for reinforcing the masonry wall 20 according to the present invention will be described.
In this method of reinforcing the masonry wall 20, the tubular reinforcing member 10 composed of the outer tube 1 and the inner tube 2 is inserted into the stone layer 21, and the inner tube 2 penetrates the cobblestone layer 22 to the above-mentioned The tubular reinforcing member 10 is pushed in until it reaches the ground layer 23 (see FIGS. 1 and 2). This pushing means is connected by screwing a rod having a male threaded portion at the tip (not shown) into the female threaded portion 2a provided at the proximal end portion of the inner tube 2, and impacting while rotating through the rod. It is carried out by applying a driving force with a drilling machine such as a drifter that adds In this embodiment, the material is driven toward the natural ground layer (fixation layer) 23 with an inclination (for example, about 5 to 10 degrees) slightly obliquely downward in the horizontal direction. However, before inserting the tubular reinforcing member 10 into the stone layer 21, the hole may be pre-drilled with a drilling machine. In the present embodiment, considering the good flow of the solidifying material, etc., it is cast into the ground layer 23 with a slightly oblique downward slope in the horizontal direction. can also be implemented.
After the tubular reinforcing member 10 is pushed (struck) into a predetermined position, the rod is removed from the inner tube 2 (see FIG. 5A).

Next, as shown in FIGS. 5B and 10, a short tension rod 8 is screwed into the female threaded portion 2a at the proximal end of the inner tube 2 to connect it. After the short tension rod 8 is attached, a coupler 25 is screwed to the base end of the short tension rod 8, and a center shaft 26 is screwed to the coupler 25 to attach the tension jack 24 to the masonry wall. 20 (stone layer 21) is brought into contact with the surface and positioned.

5B to 5C step by step, a reactive force is applied to the surface of the masonry wall 20 to pull the center shaft 26 and thus the short tension rod 8 toward the front, thereby 11 until the inner tube 2 connected to the short tension rod 8 collides with the pulling jack 24 (mark H=20 mm). Then, the outer tube 1 configured to follow the movement of the inner tube 2 is kept in contact with the tension jack 24 at its proximal end (see FIG. 10), and its distal end (see FIG. 8) is Since it is drawn to the near side, a buckling action acts around the round hole 11b near the center of the slit 11a of the diameter expanding mechanism 11, and as a result, as shown in FIG. 5C (FIG. 12), the outer tube The diameter expanding mechanism 11 (slit 11a) formed in 1 bulges radially in the stone layer 21 to expand the diameter.

Next, as shown in FIG. 5D, after removing the short tension rod 8 from the proximal end of the inner tube 2 and removing it, as shown in FIGS. A long tension rod 9 is screwed and connected to the female threaded portion 2b of the portion. After the long tension rod 9 is attached, the coupler 25 is screwed to the base end of the long tension rod 9, and the center shaft 26 is screwed to the coupler 25 to attach the tension jack 24 as described above. It is positioned by contacting the surface of the masonry wall 20 (stone layer 21).

Next, as shown in steps from FIG. 6A to FIG. 6B, a reaction force is applied to the surface of the masonry wall 20 to pull the center shaft 26 and thus the elongated tension rod 9 toward the near side. With the proximal end of the inner tube 2 kept in contact with the pulling jack 24 (see FIG. 11), the distal end is pulled forward, so that the slit 12a of the diameter-enlarging mechanism 12 is pushed toward the left of the center. A buckling action acts around the nearby round hole 12b, and as a result, as shown in FIG. Expand diameter.
The degree of diameter expansion of the pullout resistance portions 11R and 12R formed in the outer tube 1 and the inner tube 2, respectively, can be controlled by the stroke amount of the pulling jack 24. As shown in FIG.
After that, the long tension rod 9 is removed from the inner tube 2 and removed (see FIG. 6C).

In this embodiment, after that, a solidifying material is injected into the hollow portion of the inner tube 2, and the solidifying material is discharged and diffused through the hollow portion into the rock layer 21 and the natural ground layer 23, respectively. A solidified reinforcing member (pull-out resistance portions 11R and 12R) is formed on the outer periphery of the tubular reinforcing member 10 in the stone layer 21 and the ground layer 23 . Specifically, in this embodiment, after discharging and diffusing a solidification material (eg, cement milk, inorganic solidification material) through the hollow portion of the inner pipe 2 to the ground layer 23 at the inner end thereof, By discharging and diffusing the solidifying material (for example, urethane) from the diameter expanding mechanism 11 of the outer tube 1 to the stone layer 21 through the discharge hole 2c provided on the base end side of the tube 2, adjacent stones (intervals) in four directions are discharged and diffused. intellectual stone) to each other. Thus, without modifying the cobblestone layer 22, the solidified solidified masses (pull-out resistance portions 11R and 12R) having required strength and rigidity are formed in the natural ground layer 23 and the built-stone layer 21, respectively. can be done.
It should be noted that, at the time of injecting the solidifying material, some measures such as using an insert packer equipped with an injection tube or a check valve packer are appropriately made.

Thereafter, a pressure receiving plate (fixing plate) 19 is joined to the protruding portion of the base end of the reinforcing member 10 by means of joining means such as bolts 18 (see FIG. 3) or welding to support the masonry wall 20 . Specifically, when joining using the bolt 18, the bolt 18 is screwed into the female threaded portion 2a of the proximal end portion of the inner tube 2 for connection, and the connected bolt 18 is attached to the pressure receiving plate 19 (at the center of the pressure plate 19). After passing through the formed hole), the nut is screwed in to fasten and join. When fixing the pressure-receiving plate 19, it is appropriate to use a steel wire, a wire rope, or a resin material to stretch a covering net covering the surface of the masonry wall 20, for example.
Then, the construction steps described in paragraphs [0023] to [0028] are repeated according to the number of reinforcing members 10 to be placed (12 in a substantially staggered arrangement in the illustrated example), thereby reinforcing the masonry wall 20. End the construction method.

Although the embodiments have been described above with reference to the drawings, the present invention is not limited to the illustrated examples, and includes the range of design changes and application variations that are normally made by those skilled in the art within the scope that does not deviate from the technical idea of the present invention. Just to be sure.

For example, in the embodiment according to FIGS. 1 to 13, the tubular reinforcing member 10 has a hollow double-tube structure consisting of two single tubes, one short outer tube 1 and one long inner tube 2. , and the pull-out resistors 11R and 12R are provided in two places, one in each of the stone layer 21 and the ground layer 23, but the scope of the present invention is not limited to this. The tubular reinforcing member 10 is formed by combining two or more single pipes having a diameter-expanding mechanism that expands the diameter in the boulder layer 21 and a single pipe that has a diameter-expanding mechanism that expands the diameter in the ground layer 23. It can also be implemented by forming a hollow multi-tube structure with different outer diameters. Specifically, FIG. 14 shows a total of three pipes: one single pipe equipped with a diameter-expanding mechanism that expands in the rock layer 21 and two single pipes equipped with a diameter-expanding mechanism that expands in the ground layer 23. 1 schematically shows an embodiment of a tubular reinforcing member 10' formed by combining the single tubes to form a hollow triple tube structure with different outer diameters. The tubular reinforcing member 10' having the hollow triple-tube structure is sequentially expanded in diameter according to the method for expanding the diameter of the tubular reinforcing member 10 having the hollow double-tube structure according to FIGS. 1 to 13 already described.
That is, for example, if the three single pipes are called an inner pipe, a middle pipe, and an outer pipe in order from the inside to the outside, the outer pipe follows the movement of the middle pipe, and the middle pipe follows the inner pipe. First, a short tension rod is screwed into the female threaded portion of the base end of the middle pipe, and pulled forward, so that the diameter expanding mechanism formed in the outer pipe is formed on the built stone layer 21. Then, a short tension rod is screwed into the female threaded portion of the base end of the inner pipe, and pulled forward to expand the diameter of the diameter-expanding mechanism formed in the middle pipe by the ground layer 23 . Then, a long tension rod is screwed into the female threaded portion at the back end of the inner pipe, and is pulled forward to expand the diameter of the diameter-expanding mechanism formed in the inner pipe by the rock layer 23 . .
In the embodiment shown in FIG. 14, as compared with the embodiments shown in FIGS. 1 to 13, the ground layer 23 alone can form two pull-out resistance portions 12R, so that the ground layer 23 is soft. , there is an effect that the pull-out resistance can be dramatically increased when a predetermined pull-out resistance cannot be secured (or is likely to occur) with a single pull-out resistance portion 12R (see FIG. 3).
The tubular reinforcing member 10' according to FIG. 14 has a hollow triple-tube structure, but is not limited to this. It is also possible to form three or more pull-out resistance portions 12R in the mountain layer 23 and carry it out.

In addition, the inner pipe 2 constituting the reinforcing member 10 can be of course constructed by connecting pipe members having threaded ends with a coupler instead of a single pipe.

Although the present embodiment has been described mainly for the masonry wall 20, it should be noted that the present invention can also be applied to a stone wall.

Reference Signs List 1 outer tube 2 inner tube 2a female threaded portion 2b female threaded portion 2c discharge portion (discharge hole)
8 short tension rod 9 long tension rod 10 tubular reinforcing member (hollow double tube structure)
10' tubular reinforcing member (hollow triple tube structure)
11 Diameter expanding mechanism 11a Slit 11b Round hole 11R Withdrawal resistance portion 12 Diameter expanding mechanism 12a Slit 12b Round hole 12R Withdrawal resistance portion 13 Welding means 18 Bolt 19 Pressure receiving plate 20 Masonry wall 21 Masonry layer 22 Cobblestone layer 23 Ground layer 24 Tensile Jack 25 Coupler 26 Center shaft

Claims (8)

A reinforcing structure of a masonry wall provided with a ground layer behind an artificial stone layer via a cobble stone layer,
A reinforcement structure for a masonry wall, characterized in that a tubular reinforcing member is positioned behind the built stone layer, and pull-out resisting portions are formed between the built stone layer and the ground layer. 2. The pull-out resistance part is formed of a diameter expanding mechanism provided in the tubular reinforcing member and/or a hardening material discharged from the tubular reinforcing member. Masonry wall reinforcement structure. 3. A tubular reinforcing member used in a reinforcing structure for a masonry wall according to claim 1 or 2, wherein the tubular reinforcing member comprises a single pipe provided with a diameter-expanding mechanism that expands the diameter of the stone layer and the natural ground. A tubular reinforcing member characterized in that it is formed into a hollow multi-tube structure having different outer diameters by combining two or more single tubes provided with a diameter-expanding mechanism that expands the diameter in layers. The tubular reinforcing member is formed in a hollow double-tube structure consisting of a short outer tube and a long inner tube, the outer tube has a diameter-expanding mechanism that expands the diameter with the stone bed, and the inner tube is: 4. The tubular reinforcing member according to claim 3, further comprising a diameter-expanding mechanism that expands the diameter in the natural layer, wherein the outer pipe follows the movement of the inner pipe. 5. The tubular reinforcing member according to claim 3, wherein the diameter expanding mechanism is a plurality of slits formed in the circumferential direction of the tube axis. 6. The tubular reinforcing member according to claim 4 or 5, wherein the inner pipe is provided with a discharge portion for discharging the solidification material at a portion corresponding to the rock layer and the natural ground layer. . The tubular reinforcing member according to any one of claims 4 to 6 is inserted into the stone layer, and the tubular reinforcing member is inserted until the inner pipe penetrates the cobblestone layer and reaches the natural ground layer. pushing process;
A short tension rod is attached to the base end of the inner pipe, and by pulling the short tension rod to the near side, the diameter expansion mechanism of the outer pipe that follows the movement of the inner pipe is expanded by the built stone layer. and
After the short tension rod is removed from the inner pipe, a long tension rod is attached to the inner end of the inner pipe, and the long tension rod is pulled forward to expand the diameter of the inner pipe. A method of reinforcing a masonry wall, comprising: By injecting a solidification material into the rock layer and/or the rock layer through the inner pipe, a solidified reinforcing body is formed on the outer circumference of the tubular reinforcing member in the rock layer and/or the rock layer. The method for reinforcing a masonry wall according to claim 7, characterized in that:

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