Stone masonry reinforcement method and stone masonry reinforcement structure

Abstract

The purpose is to reinforce the stonework while suppressing the deformation of the stone layers. [Solution] The stone masonry reinforcement method is a method for reinforcing a stone masonry structure in which a back space 12 is formed on the back side of a plurality of stacked building stones 42, wherein a repair body 50 containing a fluid solidifying agent 52 in a bag 56 is inserted into the back space 12 from between adjacent building stones 42, and the fluid solidifying agent 52 inside the repair body 50 is solidified.

Description

Technical Field

[0001] The present invention relates to a method for reinforcing masonry and a reinforced masonry structure.

Background Art

[0002] There is known a method for reinforcing a masonry having a cavity formed behind it, in which a flexible sheet bag is inserted through a gap on the front side of the masonry, the bag is filled with a filler, the filler is filled into the cavity through the bag, and then the filler is cured (see, for example, Patent Document 1).

[0003] There is known a reinforced dry-stack stone wall structure for reinforcing a dry-stack stone wall constructed by interposing a large number of backfill stones along the back ground and stacking a large number of building stones in a substantially layered manner, in which a rod-shaped reinforcing member is installed between the back gap between the building stones and the back ground, and the rod-shaped reinforcing member is inserted between the backfill stones (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technique disclosed in Patent Document 1, when filling the bag with the filler in the cavity formed on the back side of the masonry, pressure is applied to the stone layer of the backfill stones and building stones around the bag, so the building stone layer may be deformed.

[0006] In consideration of the above facts, an object of the present invention is to reinforce the masonry while suppressing deformation of the building stone layer.

Means for Solving the Problems

[0007] The stone masonry reinforcement method described in claim 1 is a stone masonry reinforcement method for reinforcing a stone masonry in which a space is formed on the back side of a plurality of stacked building stones, wherein a repair body containing a fluid solidifying material in a bag is inserted into the space from between adjacent building stones, and the fluid solidifying material inside the repair body is solidified.

[0008] According to the stone masonry reinforcement method of claim 1, a repair body containing a fluid solidifying agent in a bag is inserted between adjacent building stones into the space formed on the back side of the building stones (hereinafter referred to as the "back space"), and the fluid solidifying agent inside the repair body is solidified. By filling the back space of the building stones with this repair body, the stone masonry can be stabilized.

[0009] Furthermore, in this invention, since the fluid solidifying agent is pre-stored in the repair body bag, deformation of the building stone layer can be suppressed compared to the case where the fluid solidifying agent is filled into the repair body bag within the space behind the building stone.

[0010] In this way, deformation of the stone layer can be suppressed while reinforcing the stonework.

[0011] Furthermore, in this invention, the repair body can be deformed according to the shape and size of the space between adjacent building stones and the space behind it. Therefore, the workability of the repair body is improved, and the space behind it can be efficiently filled with the repair body.

[0012] The stone masonry reinforcement method according to claim 2 is the stone masonry reinforcement method according to claim 1, wherein the bag of the repair body contains the reinforcing material together with the fluid solidifying material.

[0013] According to the stone masonry reinforcement method of claim 2, the bag containing the repair body contains a reinforcing material together with a fluid solidifying agent. This reinforcing material can efficiently increase the strength of the repair body.

[0014] Furthermore, while fluid solidifying agents may shrink during solidification, using fluid solidifying agents and reinforcing agents in combination can reduce the overall amount of shrinkage of both the fluid solidifying agent and the reinforcing agent.

[0015] The stone masonry reinforcement method according to claim 3 is the stone masonry reinforcement method according to claim 1 or claim 2, wherein a rod-shaped member is inserted between adjacent stone masonry stones and fixed to the stone layer or ground on the back side of the repaired body.

[0016] According to the stone masonry reinforcement method of claim 3, a rod-shaped member is inserted between adjacent building stones and fixed to the stone layer or ground on the back side of the repaired body. By restraining the building stones, building stone layers, or the stone layer on the back side of the repaired body with this rod-shaped member, movement of the stone layer can be suppressed. Therefore, the stone masonry can be made even more stable.

[0017] The stone masonry reinforcement structure according to claim 4 comprises a plurality of stacked building stones and a repair body in which a fluid solidifying material is stored in a bag, provided in a space formed on the back side of the building stones, and the repair body in which the fluid solidifying material has solidified.

[0018] According to the stone masonry reinforcement structure of claim 4, a repair body is provided in the space formed on the back side of a plurality of stacked building stones. The bag of the repair body contains a solidified fluid solidifying material. By filling the space behind the building stones with this repair body, the stone masonry can be stabilized.

[0019] Furthermore, in this invention, by pre-filling the repair body bag with a fluid solidifying agent, deformation of the building stone layer can be suppressed in the space behind the building stone compared to the case where the repair body bag is filled with the fluid solidifying agent.

[0020] In this way, deformation of the stone layer can be suppressed while reinforcing the stonework. [Effects of the Invention]

[0021] As described above, according to the present invention, it is possible to reinforce the stone masonry while suppressing the deformation of the rubble layer.

Brief Explanation of Drawings

[0022] [Figure 1] It is a longitudinal sectional view showing a stone wall to which the stone masonry reinforcement structure according to the first embodiment is applied. [Figure 2] It is a longitudinal sectional view showing a stone wall before the stone masonry reinforcement structure according to the first embodiment is applied. [Figure 3] (A) and (B) are plan views showing the repair body shown in FIG. 1. [Figure 4] (A), (B), and (C) are plan views facing FIG. 3(A) showing modified examples of the repair body shown in FIG. 1. [[ID=1^8]] [Figure 5] It is a longitudinal sectional view corresponding to FIG. 1 showing the construction process of the stone masonry reinforcement method according to the first embodiment. [Figure 6] It is a longitudinal sectional view corresponding to FIG. 1 showing the construction process of the stone masonry reinforcement method according to the first embodiment. [Figure 7] It is a longitudinal sectional view corresponding to FIG. 1 showing the construction process of the stone masonry reinforcement method according to the first embodiment. [Figure 8] It is a longitudinal sectional view showing a stone wall to which the stone masonry reinforcement structure according to the second embodiment is applied.

Modes for Carrying Out the Invention

[0023] <\ (First Embodiment) First, the first embodiment will be described.

[0024] (Stone Wall) In FIG. 1, a stone wall 20 to which the stone masonry reinforcement structure according to the present embodiment is applied is shown. The stone wall 20 is, for example, a stone wall as a historical building (cultural property). This stone wall 20 includes a rubble layer 30 covering the wall surface (side surface) 10S of the ground (hereinafter referred to as "back ground 10"), and a masonry layer 40 covering the front (surface) of the rubble layer 30. Note that the stone wall 20 is an example of stone masonry. Also, the rubble layer 30 is an example of a stone layer.

[0025] (Kuriishi layer) The rubble layer (backfill layer) 30 has multiple rubble stones (backfill stones) piled up along the wall surface (slope) 10S of the backfill ground 10. The rubble layer 30 also slopes gently along the slope of the backfill ground 10. Each rubble stone 32 is smaller than the building stone 42, which will be described later. This rubble layer 30 forms a drainage channel for rainwater and the like between the backfill ground 10 and the building stone layer 40.

[0026] (Building stone layer) The stone layer 40 has multiple stone blocks 42 stacked along the front (outer surface) of the rubble layer 30. Furthermore, the stone layer 40 gently slopes towards the rubble layer 30 as it rises. Each stone block 42 is larger than the rubble in the rubble layer 30, and in cultural properties (traditional stone masonry methods), for example, they are stacked using dry masonry.

[0027] On the back (back) side of adjacent building stones 42, intermediary stones 46 are packed into the gaps G between the adjacent building stones 42. These intermediary stones 46 enhance the stability of the building stone layer 40. On the front (front) side of adjacent building stones 42, filler stones 44 are packed into the gaps G between the adjacent building stones 42. Note that the filler stones 44 may be provided as needed depending on the shape of the building stones, and can be omitted as appropriate.

[0028] (Stone masonry reinforced structure) As described above, the stone wall 20 is fitted with the stone masonry reinforcement structure according to this embodiment. The stone masonry reinforcement structure reinforces the stone wall 20 by filling the space formed on the back side of the building stone 42 (hereinafter referred to as the "back space 12") with the repair body 50.

[0029] Specifically, Figure 2 shows the stone wall 20 before the stone reinforcement structure according to this embodiment is applied. In the stone wall 20, for example, during an earthquake, the rubble layer 30 and the building stone layer 40 are pushed outward by the backfill ground 10, and during heavy rain, the rubble layer 30 and the building stone layer 40 are pushed outward by rainwater.

[0030] In this process, if the contact points between adjacent building stones 42 or the intermediary stones 46 shift, the building stone layer 40 may bulge outwards, or the infill stones 44 may fall out, forming a back space 12 on the back side of the building stone layer 40. This back space 12 may reduce the stability of the stone wall 20.

[0031] Therefore, in this embodiment, the stone wall 20 is reinforced by inserting at least one repair body 50 into the back space 12 through the gap G between adjacent building stones 42, thereby filling the back space 12.

[0032] The back space 12 is a concept that includes the space formed in the rubble layer 30, the space between the rubble layer 30 and the stone layer 40, and the space formed in the gaps G between adjacent stone 42 on the back side of the stone layer 40.

[0033] (Repaired part) As shown in Figures 3(A) and 3(B), the repair body 50 comprises a fluid solidifying agent 52, a plurality of reinforcing materials 54, and a bag 56 for storing the fluid solidifying agent 52 and the reinforcing materials 54.

[0034] (Fluid solidification material) The fluid solidifying agent 52 is a material that transitions from a fluid state to a solidified state over time, and in the solidified state, exhibits a predetermined strength that is sufficient to reinforce the stone wall 20. This fluid solidifying agent 52 may be, for example, a cement-based solidifying agent such as mortar, an epoxy adhesive, or a resin-based solidifying agent such as resin mortar.

[0035] Furthermore, it is preferable that the fluid solidifying agent 52 be made of a material that does not adversely affect the surrounding environment of the stone wall 20.

[0036] (Reinforcement material) The reinforcing material 54 has a predetermined strength and serves to reinforce the solidified fluid solidifying material 52. Furthermore, the reinforcing material 54 is preferably made of a non-shrinking material. This is because mixing the non-shrinking reinforcing material 54 with the fluid solidifying material 52 reduces the overall shrinkage of both the fluid solidifying material 52 and the reinforcing material 54.

[0037] Examples of reinforcing materials 54 include stone materials such as rubble, pebbles, and crushed stone, as well as resin materials and metal materials. The material of the reinforcing material 54 is selected appropriately, taking into consideration the environment of the stone wall 20 and any restrictions on historical buildings. The size of the reinforcing material 54 is, for example, no larger than the rubble 32.

[0038] The size of the reinforcing material 54 is appropriately selected according to the gap G between adjacent building stones 42 and the size of the back space 12. Furthermore, it is preferable that the reinforcing material 54 be made of a material that does not adversely affect the surrounding environment of the stone wall 20.

[0039] (bag) Bag 56 is a storage bag for containing the fluid solidifying agent 52 and the reinforcing material 54. Bag 56 is also, for example, a drawstring bag whose opening can be opened and closed with a string 58.

[0040] The bag 56 is made of a material that has flexibility and strength to conform to the gaps G between adjacent building stones 42 and the shape of the back space 12. In addition, the bag 56 is made of a material that can suppress leakage of the fluid solidifying material 52 and the reinforcing material 54.

[0041] Furthermore, the bag 56 is not limited to one that can completely prevent leakage of the fluid solidifying agent 52 and the reinforcing agent 54. For example, it is sufficient that a predetermined amount of the fluid solidifying agent 52 and the reinforcing agent 54 remain in the bag 56 when the fluid solidifying agent 52 has transitioned from a fluid state to a solidified state, and some leakage of the fluid solidifying agent 52 and the reinforcing agent 54 is acceptable. In addition, it is preferable that the bag 56 be made of a material that does not adversely affect the surrounding environment of the stone wall 20.

[0042] Furthermore, the size and shape of bag 56 can be changed as appropriate. For example, bag 60 shown in Figure 4(A) is smaller than bag 56. Also, bag 62 shown in Figure 4(B) is longer and narrower than bag 56. Also, bag 64 shown in Figure 4(C) is formed in an oval shape. This bag 64 is not a drawstring bag, but its opening can be opened and closed with a zipper 66.

[0043] Note that the opening of bag 56 is not limited to a drawstring 58 (pouch), but can also be opened and closed with the aforementioned zipper 66 or hook-and-loop fastener, etc.

[0044] (Method of reinforcing stonework) Next, an example of a stone masonry reinforcement method according to the first embodiment will be described.

[0045] As shown in Figure 5, the fluid solidifying agent 52 is inserted into the gap G between adjacent building stones 42 using a rod 14 to create a repair body 50 in a fluid state. In the following explanation, the fluid repair body 50 refers to a repair body 50 in which the fluid solidifying agent 52 is in a fluid state.

[0046] Next, as shown in Figure 6, the fluid repair material 50 is pushed into the back space 12 formed on the back side of the building stone 42 using the rod 14. Furthermore, the fluid repair material 50 is pressed against the rubble stone 32 at the back of the back space 12 using the rod 14, allowing the shape of the fluid repair material 50 to conform to the shape of the back space 12. After that, the rod 14 is withdrawn from the gap G between the adjacent building stones 42.

[0047] Next, as shown in Figure 7, the other fluid repair material 50 is inserted into the gap G between the vertically adjacent building stones 42 using the rod 14. Then, the fluid repair material 50 is pushed into the back space 12 formed on the back side of the building stones 42 using the rod 14. Furthermore, the other fluid repair material 50 is pressed against the repair material 50 that was previously inserted into the back space 12, causing the shape of the other fluid repair material 50 to conform to the shape of the repair material 50. After that, the rod 14 is withdrawn from the gap G between the vertically adjacent building stones 42.

[0048] By repeating the above procedure, as shown in Figure 1, multiple repair bodies 50 are placed in the back space 12, and the fluid solidifying material 52 contained in the bag 56 of each repair body 50 is solidified. As a result, the back space 12 is filled with the fluid solidifying material 52 from the multiple repair bodies 50 in a solidified state.

[0049] Next, on the front (surface) side of adjacent building stones 42, filler stones 44 are packed into the gap G between the adjacent building stones 42. These filler stones 44 cover and conceal the repair body 50.

[0050] The above procedure can be modified as needed. For example, in the above procedure, the fluid repair material 50 was pushed into the gaps G between adjacent building stones 42 and the back space 12 using a rod 14. However, the fluid repair material 50 could be pushed into the gaps G between adjacent building stones 42 and the back space 12 using a tool other than a rod 14, for example, by the worker's hand.

[0051] Furthermore, in the procedure described above, the repair body 50 is placed in the back space 12. However, the back space 12 may also contain other materials such as crushed stone, not just the repair body 50.

[0052] Furthermore, the filler stones 44 between adjacent building stones 42 may be repacked (tightened) or replenished. In addition, the gaps G between adjacent building stones 42 may be filled with plaster or the like, taking drainage into consideration, in addition to the repair body 50. This suppresses deformation of the building stone layer 40. Therefore, the stone wall 20 can be made even more stable.

[0053] (action) Next, the operation of the first embodiment will be described.

[0054] According to the stone wall reinforcement method of this embodiment, a repair body 50 containing a fluid solidifying agent 52 in a bag 56 is inserted into the back space 12 formed on the back side of the building stones 42 through the gap G between adjacent building stones 42, and the fluid solidifying agent 52 inside the repair body 50 is solidified. By filling the back space of the building stones 42 with this repair body 50, the stone wall 20 can be stabilized. Specifically, deformation of the building stone layer 40 can be suppressed by suppressing the deformation of the rubble layer 30 and the building stones 42.

[0055] Furthermore, in this embodiment, since the fluid solidifying agent 52 is pre-stored in the bag 56 of the repair body 50, deformation of the stone layer 40 can be suppressed compared to the case where the fluid solidifying agent 52 is filled into the bag 56 of the repair body 50 within the space 12 behind the stone 42.

[0056] In this way, deformation of the stone layer 40 can be suppressed while reinforcing the stone wall 20.

[0057] Furthermore, in this embodiment, the repair body 50 can be deformed according to the gaps G between adjacent building stones 42 and the shape and size of the back space 12. Therefore, the workability of the repair body 50 is improved, and the back space 12 can be efficiently filled with the repair body 50.

[0058] Furthermore, the bag 56 of the repair body 50 contains a reinforcing material 54 along with the fluid solidifying agent 52. This reinforcing material 54 efficiently increases the strength of the repair body 50.

[0059] Furthermore, the fluid solidifying agent 52 may shrink when it solidifies. Therefore, if the bag 56 of the repair body 50 is filled with only the fluid solidifying agent 52, there is a risk that the amount of shrinkage of the repair body 50 will be excessive. In contrast, in this embodiment, by filling the bag 56 of the repair body 50 with both the fluid solidifying agent 52 and the non-shrinking reinforcing material 54, the amount of shrinkage of the repair body 50 can be reduced compared to the case where the bag 56 of the repair body 50 is filled with only the fluid solidifying agent 52.

[0060] (Second embodiment) Next, a second embodiment will be described. In the second embodiment, components and the like that have the same configuration as in the first embodiment will be denoted by the same reference numerals, and their descriptions will be omitted as appropriate.

[0061] Figure 8 shows a stone wall 20 to which the stone wall reinforcement structure according to this embodiment is applied. In addition to the repair body 50, the stone wall reinforcement structure according to this embodiment reinforces the stone wall 20 with a rod-shaped member 70.

[0062] (Rod-shaped member) The rod-shaped member 70 is formed in the shape of a long, slender rod. The rod-shaped member 70 is made of, for example, a metal rod such as a reinforcing bar or steel rod, a resin rod, or a wooden rod having a predetermined durability. This rod-shaped member 70 is inserted into the back space 12 through the gap G between adjacent building stones 42, and its tip penetrates the rubble layer 30 and is fixed in place (driven into) the back ground 10.

[0063] The tip of the rod-shaped member 70 may be fixed in place by being driven into the rubble layer 30, rather than being driven into the backfill ground 10.

[0064] Furthermore, the back space 12 is filled with multiple repair bodies 50, and the rod-shaped member 70 is inserted into the back space 12 so as to weave through the gaps between these repair bodies 50. In other words, multiple repair bodies 50 are packed into the space between the rod-shaped member 70, the back space 12, and the gap G. The multiple repair bodies 50 are restrained between the building stone 42 and the rubble stone 32 by this rod-shaped member 70.

[0065] (Method of reinforcing stonework) Next, an example of a stone masonry reinforcement method according to the second embodiment will be described.

[0066] As shown in Figure 8, the rod-shaped member 70 is inserted into the back space 12 through the gap G between the vertically adjacent building stones 42, the rod-shaped member 70 is passed through the rubble layer 30, and the tip of the rod-shaped member 70 is stuck into the back ground 10 to secure it.

[0067] Next, using a rod (not shown), multiple fluid repair materials 50 are sequentially inserted into the back space 12 through the gap G between the vertically adjacent building stones 42. At this time, the fluid repair materials 50 are pressed against the rod-shaped member 70 and the rubble stones 32 using a rod (not shown), and the shape of the fluid repair materials 50 is made to conform to the shape of the back space 12.

[0068] Then, the fluid solidifying agent 52 stored in the bag 56 of each repair body 50 is solidified. As a result, the fluid solidifying agent 52 fills the back space 12 and the gap G with the multiple repair bodies 50 in their solidified state. In addition, the rod-shaped member 70 restrains the rubble layer 30 and the building stone layer 40, as well as the multiple repair bodies 50 in their solidified state.

[0069] The above procedure can be modified as appropriate. For example, in the above procedure, the rod-shaped member 70 was inserted into the rear space 12, and then the multiple repair bodies 50 were inserted. However, conversely, the multiple repair bodies 50 could be inserted into the rear space 12, and then the rod-shaped member 70 could be inserted. Alternatively, some of the multiple repair bodies 50 could be inserted into the rear space 12, the rod-shaped member 70 could be inserted, and then the remaining repair bodies 50 could be inserted.

[0070] (action) Next, the operation of the second embodiment will be described.

[0071] According to the stone masonry reinforcement method of this embodiment, a rod-shaped member 70 is inserted into the gap G between adjacent building stones 42 and fixed to the backfill ground 10 on the back side of the repair body 50. By restraining the rubble layer 30 with this rod-shaped member 70, the movement of the rubble layer 30 can be suppressed, and the restraining effect on the building stones 42 can also be enhanced. Therefore, the stone wall 20 can be made even more stable.

[0072] (modified version) Next, modifications of the first and second embodiments described above will be explained.

[0073] In the above embodiment, the reinforcing material 54 is stored in the bag 56 of the repair body 50 together with the fluid solidifying material 52. However, the reinforcing material 54 can be stored in the bag 56 as needed and can be omitted as appropriate.

[0074] Furthermore, in the above embodiment, a rubble layer 30 is provided as a stone material layer on the back side of the stone foundation layer 40. However, the stone material layer is not limited to the rubble layer 30; for example, it may be a stone material layer in which larger stones than the rubble 32 are stacked.

[0075] Furthermore, the stone masonry reinforcement structure according to the above embodiment is applied to the stone wall 20. However, the stone masonry reinforcement structure according to the above embodiment is not limited to the stone wall 20, but can be appropriately applied to stone masonry as well.

[0076] Although one embodiment of the present invention has been described above, the present invention is not limited to these embodiments, and various modifications may be used in appropriate combinations with one embodiment, and of course, the invention can be implemented in various forms without departing from the spirit of the present invention. [Explanation of symbols]

[0077] 10 Back ground (ground) 12 Back space (space) 20. Stone wall (stone masonry) 30 Kuriteki Layer (Stone Layer) 42 Building stone 50 Repair body 52 Fluid solidification material 54 Reinforcement material 56 bags 60 bags 62 bags 64 bags 70 Rod-shaped member

Claims

1. A method for reinforcing a stone masonry structure in which a space is formed on the back side of multiple stacked stone masonry stones, A repair body containing a fluid solidifying agent in a bag is inserted into the space between adjacent building stones, and the fluid solidifying agent inside the repair body is solidified. Stone masonry reinforcement methods.

2. The bag of the repair body contains the reinforcing material together with the fluid solidifying material. The method for reinforcing a stone masonry structure according to claim 1.

3. A rod-shaped member is inserted between adjacent building stones and fixed to the stone layer or ground on the back side of the repair body. The method for reinforcing a stone masonry structure according to claim 1 or claim 2.

4. Multiple stacked building stones, A repair body in which a fluid solidifying agent is stored in a bag, provided in a space formed on the back side of the building stone, and the repair body in which the fluid solidifying agent has solidified, A stone masonry reinforcement structure equipped with this feature.

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