Reinforcement bar insertion device and reinforcement bar insertion method for stone walls

Abstract

In a reinforcement method that involves inserting reinforcing bars into the gaps of a dry-stone wall to reinforce it, the reinforcing bars are easily and reliably driven into the stone wall. [Solution] The device E comprises a support member 1 installed on the surface side of a dry-stone wall W, a reinforcing guide 2 supported by the support member 1 which positions and guides the reinforcing bar R so that its tip faces the gap Wo in the stone wall, and moves it from the gap Wo in the stone wall toward a predetermined insertion direction, and a hammer 3 which is positioned to move along the reinforcing guide 2 and strikes the rear end of the reinforcing bar R. The reinforcing bar R is placed in the reinforcing guide 2 and driven in by the hammer 3 which moves along the reinforcing guide 2.

Description

Technical Field

[0001] The present invention relates to a reinforcing bar insertion device for a stone wall and a method for inserting a reinforcing bar for a stone wall, which improve the stability of the stone wall without impairing the value of the stone wall having cultural heritage value.

Background Art

[0002] In the maintenance and management of a stone wall having cultural heritage value (hereinafter referred to as a cultural heritage stone wall or simply a stone wall) which is an empty-stacked stone wall not using a grout material such as mortar, it is important to ensure stability without impairing its value. For this reason, in the reinforcement and repair of cultural heritage stone walls, the application of modern construction methods is severely restricted, and it is required to carry out construction after fully considering the historical background of the structure as well as the appearance.

[0003] As a conventional construction method that meets such requirements, a reinforcing bar insertion reinforcement method has been proposed by Patent Documents 1 to 3.

[0004] This reinforcing bar insertion reinforcement method reinforces by inserting a rod-shaped reinforcing material such as a reinforcing bar into the stone wall without disassembling the empty-stacked stone wall, and has the following characteristics. (1) Insert a rod-shaped reinforcing material such as a reinforcing bar from the surface (front surface) of the stone wall into the gap of the stone wall (see Patent Document 1). (2) For the rod-shaped reinforcing material in (1) above, a deformed reinforcing bar with a diameter of about 25 mm is appropriate (see Non-Patent Document 1). The length of the reinforcing bar is determined by the thickness of the back chestnut layer of the stone wall. For example, if the reserve of the stone material (building stone) is 1 m to 1.3 m and the thickness of the back chestnut layer is 1.5 m to 2.2 m, a length of about 3.6 m with some margin is sufficient. Needless to say, the diameter and length of this reinforcing bar are determined to be appropriate dimensions for each construction site. (3) The insertion of the rod-shaped reinforcing material into the stone wall is performed by using a hammer (a mallet) and manually hitting the reinforcing material with the hammer (see Non-Patent Documents 1 and 2). By such manual work, the impact force and its direction on the reinforcing material can be finely adjusted, and the restrictions on the working space can also be relatively reduced. (4) The hammer mentioned in (3) above is preferably weighing 8 kg or more in order to apply sufficient striking energy to the reinforcing material. However, since the hammer is swung horizontally by hand to strike the reinforcing material, this work is extremely difficult with a hammer weighing 8 kg or more, and in actual work, it is necessary to use one weighing 4 kg or less.

[0005] The reinforcing bars (rebars) driven into the gaps between the stones in this manner moderately restrain the rubble behind the stones, effectively unifying the stone wall. In particular, it can suppress the settlement of rubble caused by "shaking" during earthquakes, thereby suppressing deformation such as bulging of the stone wall and maintaining stability. In addition, although slight abrasion marks may remain on the stones when the reinforcing bars (rebars) are inserted into the stone wall, there is almost no impact on the stone wall as a whole, and the reinforcing bars (rebars) inserted into the stone wall are hardly noticeable, so the impact on the appearance of the stone wall can be kept to a minimum. Furthermore, unlike general anchoring methods, it does not use grout material, which is a major advantage, as it helps to maintain the good appearance of the stone wall. Moreover, in the repair of stone walls such as those of castles, which often involve harsh construction conditions and environments, this method allows for flexible work, rather than manual labor. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2011-63971 [Non-Patent Document 1] Takeshi Nishimura, Hiroyoshi Kasa, Hiroyuki Yamamoto, Yasutaka Noma, Tatsuaki Nishigata, Kazuhiko Nishida: Examination of constructability in reinforcing traditional stone walls using reinforcement bar insertion method, Proceedings of the 68th Annual Scientific Conference of the Japan Society of Civil Engineers, Section VI, VI-493, 2013.9 [Non-Patent Document 2] Hiroyoshi Kasa, Tatsuaki Nishigata, Kazuhiko Nishida, Yukio Wada, Naoya Fujikawa: Reinforcement of castle stone walls by rebar insertion, Proceedings of the 73rd Annual Scientific Conference of the Japan Society of Civil Engineers, Section VI, VI-337, 2018.8 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] However, this hammer-based reinforcement method using rebar insertion has the following problems. (1) Since the rod-shaped reinforcing material is struck manually with a hammer, if the worker is different, the force of the hammer strike on the reinforcing material and the angle of impact are likely to vary, making it difficult to reliably transmit the hammer's force to the reinforcing material. (2) Since the rod-shaped reinforcing material is struck manually with a hammer, there is a risk that the hammer may miss the reinforcing material when driving it into the stone wall, and this miss may damage the cultural property stone wall. (3) When hammering rod-shaped reinforcing materials by hand, it is necessary to drive and insert the rod-shaped reinforcing materials at an angle perpendicular to the surface of the stone wall. However, it is extremely difficult for one worker to maintain the correct insertion angle of the reinforcing materials while hammering them by hand, and this work requires an assistant to maintain the insertion angle of the reinforcing materials. (4) In order to apply sufficient hammering energy to a rod-shaped reinforcing material, the largest possible hammer (for example, one weighing 8 kg or more) is required. However, as mentioned above, in practice, the reinforcing material is struck manually by swinging a hammer weighing 4 kg or less horizontally. In this case, it is necessary to obtain sufficient striking energy by swinging a hammer weighing 4 kg or less horizontally in a large arc, and for this purpose, a workspace that allows for a large horizontal swing of the hammer is required. In other words, if such a workspace cannot be secured, it is not possible to apply sufficient hammering energy to the reinforcing material. (5) When inserting numerous reinforcing materials into the stone wall, the hammering work itself is arduous at each insertion point of the reinforcing material, and since this is a continuous task that lasts for a long time, the work inevitably becomes extremely difficult and strenuous. (6) If there are interposing stones or other obstacles in front of the direction of insertion of reinforcing material into the stone wall, it becomes difficult to insert the reinforcing material by hammering, and the reinforcing material may even be pushed back by rebound. In this case, the amount of rebound of the reinforcing material is not constant due to variations in the hammering force, making it difficult to accurately measure the insertion depth of the reinforcing material sequentially, and making it difficult to identify and determine the presence of interposing stones or other obstacles, which hinders the reinforcing material insertion work. (7) Accurately striking the rod-shaped reinforcing material with a hammer by hand requires a certain level of skill in using the hammer, and it is difficult for inexperienced workers to properly insert the reinforcing material into the stone wall. (8) When the reinforcing bars to be inserted into the stone wall are long, the act of driving the reinforcing material into the ground by hand with a hammer becomes even more difficult and challenging.

[0008] The present invention aims to resolve the various problems mentioned above in a construction method in which a rod-shaped reinforcing material containing reinforcing bars is inserted into the gaps in a cultural property stone wall by striking it with a hammer from the surface of the stone wall, thereby ensuring that the hammering force and driving angle are constant to reliably transmit the hammering force to the reinforcing material, allowing the reinforcing material to be easily and reliably inserted into the stone wall, as well as resolving the various problems mentioned above. [Means for solving the problem]

[0009] To achieve the above objective, the present invention (P1) In a stone wall reinforcement construction method in which a dry-stone wall is reinforced by inserting a rod-shaped reinforcing material containing reinforcing bars into the gaps in the stone wall from the surface of the stone wall, a stone wall reinforcement reinforcing bar insertion device used for inserting the reinforcing material into the gaps in the stone wall, Support members installed on the surface side of the dry-stone wall, A reinforcing material guide is supported by the support member, and the tip of the reinforcing material faces the gap in the stone wall, and the reinforcing material is positioned and moved from the gap in the stone wall in a predetermined insertion direction, A hammer is positioned to be movable along the reinforcing member guide and strikes the rear end of the reinforcing member, Equipped with, By positioning the reinforcing material on the reinforcing guide, the tip of the reinforcing material is positioned facing the gap in the stone wall, and the reinforcing material is directed from the gap in the stone wall in a predetermined insertion direction. The reinforcing material is then struck from the rear end by moving the hammer along the reinforcing material guide to insert it into the gap in the stone wall. This is the gist of it.

[0010] Furthermore, the present invention (P1) is embodied as follows.

[0011] (1) The support member includes a pair of pillars installed in parallel in front of the surface of the dry-stone wall, one close to the surface of the dry-stone wall and the other spaced away from the surface of the dry-stone wall, and the reinforcing guide is installed between the pair of pillars at a predetermined angle. (2) Scaffolding is erected on the surface side of the dry-stone wall, and the support members consist of posts that are erected close to the surface of the dry-stone wall of the scaffolding and posts that are erected at a distance from the surface of the dry-stone wall, and the reinforcing guides are installed between each of the posts at a predetermined angle via clamps. (3) The support member consists of a frame that has a support part capable of supporting the reinforcing guide at a predetermined angle and can be movably installed on the surface side of the dry-stone wall.

[0012] (4) The reinforcing guide consists of a rail-shaped guide member that extends in a rail-like manner so that the reinforcing material can be placed on its upper surface, and a ring-shaped guide member that is raised perpendicularly to the upper end of the rail-shaped guide member and faces the gap in the stone wall, and a movable platform is slidably engaged with the rail-shaped guide member, and the hammer is mounted on the movable platform. (5) The reinforcing guide consists of a rail-shaped guide member extending in a C-shape cross-section with an opening on its upper surface on which the reinforcing material can be placed, and a ring-shaped guide member that is raised perpendicularly to the upper end of the rail-shaped guide member and faces the gap in the stone wall, and a movable platform is slidably engaged and positioned within the rail-shaped guide member, and the hammer is mounted on the movable platform. In this case, it is preferable that the upper surface of the rail-shaped guide member has an insertion opening for guiding the movable platform into the interior of the rail-shaped guide member. Also, in this case, it is preferable that the moving table includes a table body that can be inserted through an opening on the upper surface of the rail-shaped guide member and can be fitted into the rail-shaped guide member, and a plurality of wheels disposed on both sides of the table body and slidable between the upper and lower surfaces of the rail-shaped guide member.

[0013] To achieve the above object, the present invention (P2) is In the stone wall reinforcement construction for reinforcing by inserting a rod-shaped reinforcing material including a reinforcing bar into the gap of the stone wall from the surface of the dry-stacked stone wall, it is a reinforcing bar insertion method for stone wall reinforcement used to insert the reinforcing material into the gap of the stone wall, A support member is installed on the surface side of the dry-stacked stone wall, and a reinforcing material guide for supporting and installing is provided by the support member so that the tip of the reinforcing material faces the gap of the stone wall and the reinforcing material is arranged and moved in a predetermined insertion direction from the gap of the stone wall, A hammer for hitting the rear end of the reinforcing material is movably arranged along the reinforcing material guide, By arranging the reinforcing material on the reinforcing guide, the tip of the reinforcing material faces the gap of the stone wall, and the reinforcing material is directed in a predetermined insertion direction from the gap of the stone wall. The reinforcing material is hit by moving the hammer along the reinforcing material guide from the rear end and inserted into the gap of the stone wall. This is the gist.

Effect of the Invention

[0014] According to the present inventions (P1) and (P2), by arranging the reinforcing material on the reinforcing material guide, the tip of the reinforcing material faces the gap of the stone wall, and the reinforcing material is directed in a predetermined insertion direction from the gap of the stone wall. The reinforcing material is hit by moving the hammer along the reinforcing material guide from the rear end and inserted into the gap of the stone wall. Therefore, the hitting force and driving angle of the hammer on the reinforcing material are made constant, and the hitting force of the hammer on the reinforcing material is surely transmitted. In addition to being able to easily and surely insert the reinforcing material into the stone wall, the present invention has a unique and remarkable effect of being able to solve various problems listed in the above problems (problems to be solved by the invention).

Brief Description of the Drawings

[0015] [Figure 1] Figure showing a reinforcing bar inserting device for a stone wall and a method for inserting a reinforcing bar for a stone wall according to an embodiment of the present invention [Figure 2] Figure showing the configurations of the reinforcing material guide, hammer, and moving table of the device in particular [Figure 3] Figure showing the configurations of the rail-shaped guide member, hammer, and moving table of the device in particular [Figure 4] Figure showing the configuration of the stopper provided on the rail-shaped guide member of the device in particular [Figure 5] Figure showing the configuration of the ring-shaped guide member of the device in particular [Figure 6] Figure showing the configuration of the scale provided on the rail-shaped guide member of the device in particular [Figure 7] Figure showing the configurations of the hammer and moving table of the device in particular [Figure 8] Figure showing the configuration of the bar-shaped reinforcing material used in the device and the method

Embodiments for Carrying Out the Invention

[0016] Next, embodiments for carrying out this invention will be described with reference to the drawings. FIG. 1 shows a reinforcing bar inserting device for a stone wall and a method for inserting a reinforcing bar for a stone wall according to an embodiment of the present invention.

[0017] As shown in FIG. 1, a reinforcing bar inserting device E for a stone wall (hereinafter simply referred to as the present device E) is used to insert a bar-shaped reinforcing material R including a reinforcing bar into a gap Wо of the stone wall from the surface (front surface) of the dry-stacked stone wall W in a stone wall reinforcement construction for reinforcement by inserting the reinforcing material R into the gap Wо of the stone wall. The device E comprises a support member 1 installed on the surface side of a dry-stone wall W, a reinforcing material guide 2 supported by the support member 1, which positions and guides the reinforcing material R so that its tip faces the gap Wo in the stone wall, and inserts it into the gap Wo in the stone wall in a predetermined direction, and a hammer 3 which is movably positioned along the reinforcing material guide 2 and strikes the rear end of the reinforcing material R.

[0018] The support member 1 includes a pair of support columns 11 and 12 that are installed in parallel in front of the surface of the dry-stone wall W, with one column close to the surface of the dry-stone wall W and the other column spaced away from the surface of the dry-stone wall W, and a reinforcing guide 2 is installed between the pair of support columns 11 and 12 at a predetermined angle. This support member 1 may be formed as a fixed structure made by assembling a plurality of iron pipes vertically and horizontally on the surface side of the dry-stone wall W, or it may be formed as a movable frame that is movably positioned on the surface side of the dry-stone wall W.

[0019] In this case, the support member 1 is installed as a fixed structure. Here, the support member 1 may be formed and installed specifically for this device E, but here, using the scaffolding that is usually assembled on the surface side of the dry-stone wall W in stone wall reinforcement work, the support member 1 is made of single pipes that are generally used as temporary scaffolding materials, and is composed of a support column (vertical single pipe) 11 that is erected close to the surface of the dry-stone wall W of the scaffolding and a support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stone wall W. The reinforcement guide 2 is erected at a predetermined angle between these support columns 11 and 12 via clamps (pipe clamps) C that are generally used in the assembly of scaffolding.

[0020] As shown in Figures 1 and 2, the reinforcing member guide 2 consists of a rail-shaped guide member 21 that extends in a rail-like manner so that the reinforcing member R can be placed on its upper surface, and a ring-shaped guide member 22 that is raised perpendicularly to the upper end of the rail-shaped guide member 21 and faces the gap Wo in the stone wall. A movable platform 3A is slidably engaged with the rail-shaped guide member 21, and the hammer 3 is mounted on the movable platform 3A.

[0021] In this case, the reinforcing member guide 2 consists of a rail-shaped guide member 21 with a C-shaped cross-section and an open top surface that allows the reinforcing member R to be placed on its upper surface, and a ring-shaped guide member 22 that is raised perpendicularly to the tip of the upper surface and faces the gap Wo in the stone wall. The movable platform 3A is slidably engaged and positioned within the rail-shaped guide member 21, and the hammer 3 is mounted on the movable platform 3A and is positioned to move on the rail-shaped guide member 21 as the movable platform 3A slides within the rail-shaped guide member 21.

[0022] Here, the rail-shaped guide member 21 is formed from channel steel (including lip channel steel, C-shaped steel, and C-channel), with one of the four sides of the channel steel having an opening serving as the upper surface. While this rail-shaped guide member 21 can be made from general channel steel, here it is specifically formed from lip channel steel. This is effective for adding markings 24 to the rail-shaped guide member 21, as described later, and for preventing the movable platform 3A, which is placed inside the guide member 21, from detaching or falling off, making lip channel steel the optimal choice. The length of this guide member 21 is determined by the length of the reinforcing material R inserted into the stone wall W and the size (width) of the scaffolding. Typically, the length of the rail-shaped guide member 21 is standardized to about 2m. As shown in Figure 3, an insertion opening 210 is provided on the upper surface of this rail-shaped guide member 21 to guide the movable platform 3A into the interior of the rail-shaped guide member 21. In this case, on the upper surface of the channel steel, a rectangular notch is cut out on a portion of the rear end side, on each side of the opening on the upper surface, to form an insertion opening 210 that is large enough to guide the movable table 3A into the interior of the channel steel. Furthermore, as shown in Figure 4, this rail-shaped guide member 21 has a stopper 23 attached to the rear end of the rail-shaped guide member 21 that restricts the movement of the hammer 3 outside the rail-shaped guide member 21 (outside the rear end opening surface of the rail-shaped guide member 21). In this case, the stopper 23 is made of a bolt, which is passed through the sides on both sides of the rear end side close to the rear end opening surface of the rail-shaped guide member 21 and fastened and fixed with a nut. This stopper (bolt) 23 restricts the movement of the movable table 3A just before the rear end opening surface of the rail-shaped guide member 21.

[0023] Here, as shown in Figure 5, the ring-shaped guide member 22 is formed to a predetermined length using an iron pipe (round pipe) so that the reinforcing material R can be inserted into it, with a diameter slightly larger than the reinforcing material R, and so that the reinforcing material R can be supported parallel to the rail-shaped guide member 21, and the overall shape is cylindrical. The axis of this ring-shaped guide member 22 is oriented in the longitudinal direction of the rail-shaped guide member 21 and is fixed to a mounting plate 221 which is fixed to the upper end of the rail-shaped guide member 21 by bolts and nuts or welding. The end of the reinforcing material R is inserted into this ring-shaped guide member 22, supporting the reinforcing material R, and this reinforcing material R is positioned parallel to the upper surface of the rail-shaped guide member 21.

[0024] The reinforcing member guide 2 also has a scale 24, as shown in Figure 6, for measuring the distance the reinforcing member R moves when struck by the hammer 3. In this case, the scale 24 is attached to both sides of the upper surface of the rail-shaped guide member 21, within a certain range from the rear edge of the mounting plate 221 of the ring-shaped guide member 22 at the tip of the rail-shaped guide member 21 toward the rear end of the rail-shaped guide member 21. By measuring the length of the rear end of the reinforcing member R that has been driven into the stone wall W using this scale 24, the insertion depth of the tip of the reinforcing member R into the stone wall W during or after it has been driven in is measured.

[0025] As shown in Figure 1, the reinforcing guide 2 is supported and installed on a support member 1 which is installed on the surface side of the dry-stone wall W, with a rail-shaped guide member 21. In this case, as previously described, the reinforcing guide 2 is erected between a support column (vertical single pipe) 11 that is erected close to the surface of the dry-stone wall W of the scaffolding and a support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stone wall W, via clamps C commonly used in scaffolding assembly. Therefore, the reinforcing guide 2 is fitted with mounting members 25 for erection between these support columns 11 and 12. These mounting members 25 are made of single pipes used for temporary materials such as scaffolding supports and handrails, and are formed to be approximately the same length as the rail-shaped guide member 21. These mounting members 25 are positioned parallel to the lower surface of the rail-shaped guide member 21, and these mounting members 25 and the rail-shaped guide member 21 are fixed together with bolts, binding materials, etc. The mounting member 25, that is, the single pipe, has common clamps (pipe clamps) C attached to both ends. Thus, the reinforcing guide 2 is positioned with its top opening facing upward, and is spanned at a predetermined angle between the mounting member (single pipe) 25 and the support column (vertical single pipe) 11 that is erected close to the surface of the dry-stone wall W of the scaffolding, and the support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stone wall W. One end of the mounting member (single pipe) 25 is fastened to the support column (vertical single pipe) 11 that is erected close to the surface of the dry-stone wall W of the scaffolding by clamp C, and the other end of the mounting member (single pipe) 25 is fastened to the support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stone wall W by clamp C, thereby fixing it in place.

[0026] As shown in Figure 7, the mobile platform 3A consists of a platform body 31 and a plurality of wheels (guide rollers) 32 arranged on both sides of the platform body 31. In this case, the platform body 31 is made of a rectangular parallelepiped metal member that can be fitted into the upper opening of the rail-shaped guide member 21 of the reinforcing guide 2. In this case, the platform body 31 is formed to a predetermined size from channel steel so that it can be fitted into the rail-shaped guide member 21. The plurality of wheels 32 consist of two wheels on each side, for a total of four wheels, and each is made of metal and is formed so that it can be fitted between the upper and lower surfaces of the rail-shaped guide member 21 of the reinforcing guide 2, and is pivotally supported on both sides of the platform body 31. Thus, the mobile platform 3A is fitted into the rail-shaped guide member 21 and is able to move.

[0027] The hammer 3 is made of metal and consists of a block with a circular or square cross-section having a predetermined weight. In this case, the hammer 3 may be made of a metal component that is the striking part of a hammer. Furthermore, it is preferable that the hammer 3 has a handle (not shown) that can be grasped by the operator's hand. If a handle is provided, the handle is provided on the top of the hammer 3. In this case, the shape of the handle is arbitrary, but it goes without saying that it should be a shape that is easy to hold and easy to operate. The hammer 3 is fixed to the upper surface of the base body 31 of the mobile stand by welding or the like via a metal mounting base 301. Here, a pair of reinforcing bars are used for the metal mounting base 301, and these reinforcing bars are arranged parallel to both sides of the upper surface of the base body 31 of the mobile stand 3A and fixed by welding or the like, so that the hammer 3 is fixed to the base body 31 by welding via the pair of reinforcing bars. This prevents deformation of the mobile stand 3A due to the heat during welding.

[0028] The device E is configured in this way, and as shown in Figure 1, by placing the reinforcing material R on the reinforcing material guide 2, the tip of the reinforcing material R is positioned facing the gap Wo in the stone wall, and the reinforcing material R is directed out of the gap Wo in the stone wall in a predetermined insertion direction. The reinforcing material R is then struck from the rear end by moving the hammer 3 along the reinforcing material guide 2, thereby inserting it into the gap Wo in the stone wall.

[0029] In this case, as shown in Figure 8, the reinforcing member R is formed with a rectangular cross-section R1 at the rear end in the insertion direction so that a tool can be fitted into it, and / or a hole R2 is formed at the rear end in the insertion direction of the reinforcing member R so that a tool or wire can be inserted in a direction perpendicular to the axis. In this case, the reinforcing member R is a deformed reinforcing bar, and the rear end in the insertion direction of this reinforcing bar is formed with a rectangular cross-section, such as a square or hexagonal cross-section, so that a tool such as a wrench can be fitted into it, and a hole R2 is formed through the rear end in the insertion direction of the reinforcing member R so that a long, slender tool such as a screwdriver or wire can be inserted in a direction perpendicular to the axis.

[0030] Figure 1 also shows the reinforcing bar insertion method K for stone walls using this device (hereinafter simply referred to as "this method K").

[0031] This construction method K is used in stone wall reinforcement work, in which a rod-shaped reinforcing material R containing reinforcing bars is inserted into the gaps Wo in the stone wall from the surface of the dry-stone wall W, and the reinforcing material R is used to insert the reinforcing material R into the gaps Wo in the stone wall. In this construction method K, a support member 1 is installed on the surface side of the dry-stone wall W (support member installation step), and a reinforcing material guide 2 is supported and installed by the support member 1 to position and guide the reinforcing material R so that its tip faces the gap Wo in the stone wall and the reinforcing material R is positioned from the gap Wo in the stone wall in a predetermined insertion direction (reinforcing material guide installation step), and a hammer 3 is positioned to strike the rear end of the reinforcing material R so that it can move along the reinforcing material guide 2 (hammer assembly step), and by positioning the reinforcing material R on this reinforcing material guide 2, the tip of the reinforcing material R faces the gap Wo in the stone wall and the reinforcing material R is positioned from the gap in the stone wall in a predetermined insertion direction (reinforcing material positioning step), and the reinforcing material R is struck from the rear end by moving the hammer 3 along the reinforcing material guide 2 (reinforcing material striking step) and inserted into the gap Wo in the stone wall.

[0032] Each step of this construction method is specified as follows. Note that, as in conventional methods, deformed reinforcing bars are used for the rod-shaped reinforcing material R, so in each of the following steps, the reinforcing material R will simply be referred to as reinforcing bar R.

[0033] (Support member installation process) In this process, one support column 11, which forms part of the support member 1, is placed close to the surface of the dry-stone wall W, while the other support column 12, which also forms part of the support member 1, is placed at a distance from the surface of the dry-stone wall W, with the two support columns 11 and 12 installed in parallel. A reinforcing guide 2 is then erected between these support columns 11 and 12 at a predetermined angle. This support member 1 may be a fixed structure made by assembling multiple steel pipes in the vertical and horizontal directions, or it may be a movable frame.

[0034] In this case, the former, that is, a fixed structure, is used. Here, the support member 1 utilizes the scaffolding that is assembled on the surface side of the dry-stone wall W during stone wall reinforcement work, and uses a support column (vertical single pipe) 11 that is erected close to the surface of the dry-stone wall W of the scaffolding and a support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stone wall W. In this way, the reinforcement guide 2 is erected at a predetermined angle between these support columns 11 and 12 via clamps C, which are commonly used in the assembly of scaffolding, and in this case, in particular, adjustable clamps (hereinafter sometimes referred to as adjustable clamps C) that allow the angle of the single pipe to be freely adjusted.

[0035] In this process, by using scaffolding for the support member 1, the support member 1 can be installed easily and reliably without requiring a special support member specifically for this construction method K, and the special costs required solely for the installation of the support member 1 can be eliminated.

[0036] (Reinforcement guide installation process) In this process, the reinforcing guide 2 consists of a rail-shaped guide member 21 that extends in a rail-like manner so that a reinforcing bar R can be placed on its upper surface, and a ring-shaped guide member 22 that is raised perpendicularly to the upper end of the rail-shaped guide member 21 and faces the gap Wo in the stone wall. The movable platform 3A is slidably engaged with the rail-shaped guide member 21, and the hammer 3 is mounted on the movable platform 3A.

[0037] In this case, a rail-shaped guide member 21 with a C-shaped cross-section and an open top surface that allows a reinforcing bar R to be placed on its upper surface is used, along with a ring-shaped guide member 22 that rises perpendicularly to the tip of the upper surface of the rail-shaped guide member 21 and faces the gap Wo in the stone wall. A movable platform 3A is slidably engaged with the rail-shaped guide member 21, and the hammer 3 is mounted on the movable platform 3A (see Figure 3). Here, a channel steel having a width that allows a reinforcing bar R to be placed on the rail-shaped guide member 21 is used, and the channel steel is formed with the side having an opening as the upper surface, and with dimensions longer than the length of the reinforcing bar R used in this construction method K. In addition, an insertion opening 210 is provided on the upper surface of the rail-shaped guide member 21 to guide the movable platform 3A into the interior of the rail-shaped guide member 21. In this case, the insertion opening 210 is formed by cutting out a portion of the rear end side of the upper surface of the channel steel, on each side of the opening on the upper surface, to a size that allows the movable platform 3A to be guided into the interior of the channel steel.

[0038] In this case, a stopper 23 is attached to the rear end of the rail-shaped guide member 21 of the reinforcing guide 2 to restrict the movement of the hammer 3 outside the rail-shaped guide member 21 (see Figure 4). Here, a bolt is used for the stopper 23, and the bolt is passed through the rail-shaped guide member 21, that is, between the sides on both sides at the rear end close to the rear end opening surface of the channel steel, and fastened and fixed with a nut. This bolt restricts the movement of the movable platform 3A just before the rear end opening surface of the rail-shaped guide member 21.

[0039] Furthermore, in this case, a scale 24 is attached to the reinforcing guide 2 to measure the distance the reinforcing bar R moves when struck by the hammer 3 (see Figure 6). Here, the scale 24 is attached to the rail-shaped guide member 21, that is, to a certain range on both sides of the upper surface of the channel steel, from the edge of the mounting plate 221 of the ring-shaped guide member 22 at the tip of the channel steel toward the rear end of the channel steel. By measuring the length of the rear end of the reinforcing bar R that has been driven into the stone wall W using this scale 24, the insertion depth of the tip of the reinforcing bar R into the stone wall W during or after driving is measured.

[0040] The reinforcing guide 2, having the above configuration, is supported and installed on a support member 1 installed on the surface side of the dry-stone wall W. In this case, the rail-shaped guide member 21 is erected between a support column (vertical single pipe) 11 that is erected close to the surface of the dry-stone wall W of the scaffolding and a support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stone wall W, via a clamp C commonly used in scaffolding assembly. Therefore, an attachment member 25 for erection between the support columns 11 and 12 is provided on this reinforcing guide 2. Here, the rail-shaped guide member 21 of this reinforcing guide 2 is erected between the vertical single pipes of the scaffolding using a swivel clamp C as described above. Therefore, a single pipe, commonly used as a handrail or support column in scaffolding assembly, is used for this attachment member 25, and this single pipe is formed to be approximately the same length as the rail-shaped guide member 21. The mounting member 25 is positioned parallel to the rail-shaped guide member 21, in this case the channel steel, and the mounting member 25 and the channel steel are fixed together with bolts or binding materials. In this way, the reinforcing guide 2 is placed between the mounting member (single pipe) 25 and the support column (vertical single pipe) 11 that is erected close to the surface of the dry-stacked stone wall W of the scaffolding and the support column (vertical single pipe) 12 that is erected at a predetermined angle, in this case the ring-shaped guide member 22 is positioned facing each other with their centers aligned in the gap W in the stone wall, and is spanned perpendicular to the stone wall W. One end of the mounting member (single pipe) 25 is fastened to the support column (vertical single pipe) 11 that is erected close to the surface of the dry-stacked stone wall W of the scaffolding with a swivel clamp C, and the other end of the mounting member (single pipe) 25 is fastened to the support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stacked stone wall W with a swivel clamp C to fix it in place. When installing the reinforcing guide 2, one end of the mounting member 25 is fixed at a low position to the support column 11 close to the stone wall W using a swivel clamp C, and the other end of the mounting member 25 is fixed at a high position to the support column 12 spaced away from the stone wall W using a swivel clamp C, thereby installing the reinforcing guide 2 at the correct (appropriate) angle to the surface of the stone wall W, usually perpendicular to the surface of the stone wall.

[0041] Furthermore, this reinforcing guide 2 may be formed at the construction site using channel steel, or it may be manufactured in advance at the factory using channel steel or other appropriate materials and simply installed at the construction site.

[0042] The mobile platform 3A consists of a platform body 31 and a plurality of wheels (guide rollers) 32 arranged on both sides of the platform body 31 (see Figure 2). In this case, the platform body 1 is formed from a rectangular parallelepiped metal member that can be fitted into the upper opening of the rail-shaped guide member 21 of the reinforcing guide 2. The plurality of wheels 32 are arranged in a configuration of two wheels on each side of the platform body 21, for a total of four wheels. Each wheel is made of metal and is formed so as to be fitted between the upper and lower surfaces of the rail-shaped guide member 21 of the reinforcing guide 3, and is pivotally supported on both sides of the platform body 31. In this way, the mobile platform 3A is fitted into the rail-shaped guide member 21 and positioned to be mobile.

[0043] The hammer 3 is made of a metal block with a circular or square cross-section and a predetermined weight (see Figure 7). In this case, the hammer 3 may be made of a metal component that is the striking part of a hammer. In this case, it is preferable that the hammer 3 has a handle that can be gripped by the worker's hand. The hammer 3 is then fixed to the upper surface of the base body 31 of the mobile stand 3A by welding via a metal mounting base 301 made of reinforcing bars or the like. These mobile platforms 3A and hammers 3 may be assembled at the construction site, or they may be manufactured in advance at the factory and simply assembled into the rail-shaped guide members 21 at the construction site.

[0044] In this way, the mobile platform 3A on which the hammer 3 is mounted is fitted into the rail-shaped guide member 21 through the insertion opening 210 on the upper surface of the rail-shaped guide member 21.

[0045] (Reinforcement material placement process) Once the device E is assembled and installed on the surface side of the stone wall W in this manner, the reinforcing bar R is placed on the reinforcing guide 2. In this case, the tip of the reinforcing bar R is passed through the ring-shaped guide member 22 on the tip side of the reinforcing guide 2 and positioned on the upper surface of the rail-shaped guide member 21, in this case on the upper opening of the channel steel, parallel to the upper surface. This positions the tip of the reinforcing bar R opposite to the gap Wo in the stone wall, and directs the reinforcing bar R from the gap Wo in the stone wall in a predetermined insertion direction, in this case perpendicular to the surface of the stone wall W. Then, the reinforcing bar R is inserted into the gap between the stones (building stones) on the surface of the stone wall W. If the insertion position or angle of the reinforcing bar R is not appropriate at this time, the insertion position and angle of the reinforcing bar can be adjusted by fine-tuning the mounting position and mounting angle of the reinforcing guide 2 on the support member 1 to which the reinforcing guide 2 is attached with clamp C, and then reinserting the reinforcing bar R into the gap Wo in the stones on the surface of the stone wall W.

[0046] (Reinforcement material impact process) Then, the reinforcing bar R is struck from its rear end by manually moving a hammer 3 along the reinforcing guide 2, and inserted into the gap Wo in the stone wall. In this case, first, the movable platform 3A is passed through the insertion opening 210 of the rail-shaped guide member 21 and fitted into the rail-shaped guide member 21, and the hammer 3 is positioned on the upper opening of the rail-shaped guide member 21. Next, the hammer 3 is manually moved backward towards the rear end of the reinforcing guide 2 via the movable platform 3A, and the hammer 3 is manually moved forcefully towards the front end along the reinforcing guide 2 via the movable platform 3A to strike the rear end of the reinforcing bar R on the reinforcing guide 2, driving the reinforcing bar R into the gap Wo in the stone wall. This striking with the hammer 3 is repeated multiple times, gradually inserting the reinforcing bar R into the gap Wo in the stone wall. At this time, the amount of reinforcing bar R inserted into the stone wall W with each strike can be determined by reading the scale 24 on the rail-shaped guide member 21. In this process, if the length of the reinforcing bar R to be inserted into the stone wall W is long, the reinforcing bar R is first placed on a rail-shaped guide member 21 and cut to a length that can be sufficiently struck with a hammer 3. The reinforcing bar R to be inserted later is then welded to the reinforcing bar R that was inserted earlier, integrating multiple reinforcing bars R into one.

[0047] Furthermore, if it becomes necessary to correct the insertion position of the reinforcing bar R or to remove the reinforcing bar R during or in the future, the portion processed into a rectangular cross-section R1 on the rear end of the reinforcing bar R can be gripped with a wrench and rotated while pulling, or a thin rod-shaped tool or wire such as steel wire can be passed through the hole R2 drilled on the rear end of the reinforcing bar R and pulled, thereby allowing the reinforcing bar R to be pulled out partially or completely from the stone wall W, and it is easy to reinsert or remove the reinforcing bar R at the appropriate position.

[0048] This process offers the following advantages compared to conventional methods: (1) Conventionally, reinforcing bars are struck manually with a hammer (genno), and because it is done manually, variations tend to occur in the hammering force and driving angle against the reinforcing bar, making it difficult to reliably transmit the hammering force to the reinforcing bar. In contrast, in this construction method K, by positioning the reinforcing bar R in the reinforcing material guide 2, the tip of the reinforcing bar R can be positioned facing the gap Wo in the stone wall, and the reinforcing bar R can be directed from the gap Wo in the stone wall in a predetermined insertion direction. The reinforcing bar R is then struck by moving the hammer 3 along the reinforcing material guide 2 from the rear end, and inserted into the gap Wo in the stone wall. Therefore, even if the hammer 3 is moved manually, the hammering force and driving angle against the reinforcing bar R can be kept constant, and the hammering force against the reinforcing bar R can be reliably transmitted, allowing the reinforcing bar 3 to be easily and reliably inserted into the stone wall W. (2) Conventionally, reinforcing bars are driven into the stone wall by hand with a hammer, which can lead to the hammer missing the reinforcing bar and damaging the cultural property stone wall. In contrast, with this method K, the reinforcing bar R, which is placed in the reinforcing guide 2, is struck by moving the hammer 3 along the reinforcing guide 2 from the rear end, and inserted into the gap W in the stone wall. This ensures that the reinforcing bar R is inserted reliably without damaging the surrounding stones. (3) Conventionally, when reinforcing bars are driven in by hand with a hammer, it is necessary to drive and insert the bars at an angle perpendicular to the surface of the stone wall. However, in order to correctly maintain this insertion angle of the bars, an assistant is needed to maintain the insertion angle of the bars. In particular, when inserting many reinforcing materials into a stone wall, the hammering work at each insertion point of the reinforcing material in the stone wall is itself arduous, and since this is a continuous work that lasts for a long time, the work inevitably becomes very difficult and strenuous. Furthermore, accurately driving in bars by hand with a hammer requires a certain level of skill in using the hammer, and it is difficult for inexperienced workers to properly insert bars into the stone wall. In contrast, with this construction method K, the hammering of the bars R is performed by moving the hammer 3 along the reinforcing material guide 2, so there is no need to continuously swing a heavy hammer towards the bars R, and no special skills or experience are required to drive in the bars R, and the insertion work of the bars R can be easily performed by a single worker. (4) Conventionally, in order to apply sufficient impact energy to the reinforcing bars, the largest possible hammer (for example, one weighing 8 kg or more) is required. However, in reality, it is necessary to manually strike the reinforcing bars with a hammer weighing 4 kg or less, swinging it horizontally. In this case, it is necessary to obtain sufficient impact energy by swinging the hammer weighing 4 kg or less horizontally in a large arc. For this reason, a workspace is required that allows the hammer to be swung horizontally in a large arc. If this workspace cannot be secured, it is not possible to apply sufficient impact energy to the reinforcing bars. In contrast, with this construction method K, as long as there is space to install this device E, that is, if the support member 1 is installed on the surface side of the dry-stone wall W, and the reinforcing guide 2, which positions and guides the reinforcing bar R so that its tip faces the gap Wo in the stone wall and moves it in a predetermined insertion direction from the gap Wo in the stone wall, then the reinforcing bar R can be driven in, and there is no need to secure a large space required to swing the hammer 3 horizontally. (5) Conventionally, if there is a stone or other obstruction in front of the direction in which reinforcing bars are inserted into a stone wall, it becomes difficult to insert the reinforcing material by hammering. Moreover, the reinforcing bars may be pushed back by rebound, and in this case, the amount of rebound of the reinforcing bars is not constant due to variations in the hammering force, making it difficult to accurately measure the insertion depth of the reinforcing bars sequentially, and making it difficult to grasp the presence of stone or other obstructions, thus hindering the reinforcing bar insertion work. In contrast, in this construction method K, the reinforcing bar R is placed on the reinforcement guide 2, and the reinforcing bar R is struck by hammering the hammer 3 from the rear end along the reinforcement guide 2 to insert it into the gap W in the stone wall. If the reinforcing bar R cannot be inserted even after multiple strikes, this can be reliably identified, and it is easy to determine that there is an obstacle at the tip of the reinforcing bar R. In this case, the stone wall W can be reliably reinforced by changing the striking position of the reinforcing bar R and inserting it again. (6) Conventionally, when the reinforcing bars to be inserted into the stone wall are long, the act of driving the bars in by hand with a hammer becomes even more difficult. In contrast, in this construction method K, when the length of the reinforcing bars R to be inserted into the stone wall W is long, the reinforcing bars R are placed in advance on a rail-shaped guide member 21 and cut to a length that can be sufficiently struck with a hammer 3, and the reinforcing bars R to be inserted later are connected to the reinforcing bars R that have been inserted earlier by welding, thereby integrating multiple reinforcing bars R. As a result, even when the reinforcing bars R to be inserted into the stone wall W are long, the work of driving the long reinforcing bars R in by hand with a hammer 3 can be easily performed.

[0049] Furthermore, the reinforcing steel bar R is formed with a rectangular or hexagonal cross-section at its rear end in the insertion direction, allowing tools such as wrenches to be fitted into it. Additionally, a hole is formed through the rear end of the reinforcing steel bar R in the insertion direction, allowing tools such as screwdrivers or wires to be inserted perpendicular to the axis. As a result, the reinforcing steel bar R inserted into the stone wall W can be easily pulled out using tools or wires, whether during construction or for future removal.

[0050] As described above, in the present apparatus E and the present construction method K, a support member 1 is installed on the surface side of the dry-stone wall W, and a reinforcing material guide 2 is supported on the support member 1 to position and move the reinforcing material R so that its tip faces the gap Wo in the stone wall and it is directed from the gap Wo in the stone wall toward a predetermined insertion direction, and a hammer 3 is positioned on the reinforcing material guide 2 so as to be movable along the reinforcing material guide 2 to strike the rear end of the reinforcing material R. By positioning the reinforcing material R on the reinforcing material guide 2 in this manner, the tip of the reinforcing material R faces the gap Wo in the stone wall and the reinforcing material R is directed from the gap Wo in the stone wall toward a predetermined insertion direction, and the reinforcing material R is inserted into the gap Wo in the stone wall by striking it from the rear end with the hammer 3 moving along the reinforcing material guide 2. In this way, even if the hammer 3 is moved manually, the striking force and driving angle of the hammer 3 against the reinforcing material R can be kept constant, and the striking force of the hammer 3 against the reinforcing material R can be reliably transmitted. This allows the reinforcing material R to be easily and reliably inserted into the gap Wo in the stone wall at a constant insertion angle without damaging the surrounding stones. Furthermore, striking the reinforcing material R with the hammer 3 is performed simply by moving the hammer 3 via the mobile platform 3A on the rail-shaped guide member 2 on which the reinforcing material R is placed. This eliminates the need for special skills or experience, and the need to continuously swing a heavy hammer (genno), making it easy to drive in and insert the reinforcing material R. In addition, the reinforcing material R can be driven in and inserted as long as there is space to install this device E, eliminating the need to secure a large space required to swing a hammer (genno) horizontally, as in the conventional method. Moreover, with this device E, if the reinforcing material R cannot be inserted after being struck multiple times, this situation can be quickly and reliably identified, and it can be easily determined that there is an obstacle at the tip of the reinforcing material R. Therefore, in such cases, the insertion position of the reinforcing material R can be immediately changed and the reinforcing material R can be driven in again, allowing the reinforcement work of the stone wall W to be performed quickly and reliably.

[0051] Furthermore, the configuration of each part of this device E provides the following significant advantages.

[0052] (1) The support member 1 is composed of a pair of support columns 11 and 12 installed in parallel in front of the surface of the dry-stone wall W, with one close to the surface of the dry-stone wall W and the other spaced away from the surface of the dry-stone wall W, and the reinforcing guide 2 is installed between the pair of support columns 11 and 12 at a predetermined angle. Therefore, even if a large space cannot be secured on the surface side of the dry-stone wall W, such as when swinging a hammer horizontally in the conventional way, this device E can be effectively applied to reliably achieve the effects described above.

[0053] (2) The support member 1 is constructed by assembling scaffolding on the surface side of the dry-stone wall W, and comprising a support column 11 that is erected close to the surface of the dry-stone wall W on the scaffolding and a support column 12 that is erected at a distance from the surface of the dry-stone wall W, and by installing the reinforcing guide 2 between each support column 11 and 12 at a predetermined angle via clamp C, the device E can be effectively applied to achieve the effects described above, even when it is not possible to secure a large space that allows for a wide horizontal swing of a hammer as in the conventional method, as in (1) above. Furthermore, in this case, the support member 1 can be easily and inexpensively constructed by using scaffolding assembled on the surface side of the dry-stone wall W during stone wall reinforcement work, and by using a support column (vertical single pipe) 11 that is erected close to the surface of the dry-stone wall W on the scaffolding and a support column (vertical single pipe) 12 that is erected at a distance from the surface of the dry-stone wall W.

[0054] (3) The reinforcing guide 2 uses a rail-shaped guide member 21 that extends in a rail-like manner so that the reinforcing material R can be placed on its upper surface, and a ring-shaped guide member 22 that is raised perpendicularly to the upper tip side of the rail-shaped guide member 21 and faces the gap Wo in the stone wall. The movable base 3A is slidably engaged with the rail-shaped guide member 21, and the hammer 3 is mounted on the movable base 3A. Thus, the reinforcing guide 2 can be made with a simple structure and manufactured at low cost, and the effects described above can be reliably achieved. In this case, the reinforcing member guide 2 uses a rail-shaped guide member 21 extending in a C-shape with an opening on its upper surface so that the reinforcing member R can be placed on its upper surface, and a ring-shaped guide member 22 that is raised perpendicularly to the upper end of the rail-shaped guide member 21 and faces the gap Wo in the stone wall. By slidably engaging the movable base 3A within the rail-shaped guide member 21 and mounting the hammer 3 on the movable base 3A, the reinforcing member guide 2 can be made into a simpler structure and manufactured at a lower cost. Furthermore, by forming this rail-shaped guide member 21 using channel steel or the like, this rail-shaped guide member 21 can be formed very easily and at a low cost, and can be easily manufactured even at the construction site. Then, a single pipe used as a handrail or support for scaffolding is integrally fixed to the lower part of the rail-shaped guide member 21 with bolts or the like as an attachment member 25, and the reinforcing guide 2 is attached to the single pipes of the scaffolding support using clamps C via this single pipe. This allows the reinforcing guide 2 to be easily and securely fixed to the scaffolding support, and the tip of the reinforcing material R can be positioned facing the gap Wo in the stone wall, allowing the reinforcing material R to be easily and securely adjusted to a predetermined angle so that it is facing the gap Wo in the stone wall and directed in a predetermined insertion direction. Furthermore, in this case, since an insertion opening 210 is provided on the upper surface of the rail-shaped guide member 21 to guide the movable base 3A into the interior of the rail-shaped guide member 21, the movable base 3A can be easily assembled into and removed from the rail-shaped guide member 21. Furthermore, in this case, by making the movable platform 3A a platform body 31 that can be inserted through the opening on the upper surface of the rail-shaped guide member 21 and fitted inside the rail-shaped guide member 21, and a plurality of wheels 32 arranged on both sides of the platform body 31 that can slide between the upper and lower surfaces of the rail-shaped guide member 21, the movable platform 3A can be easily formed and manufactured at the construction site. In addition, the movable platform 3A can be easily incorporated into and removed from the rail-shaped guide member 21.

[0055] (4) The reinforcing material guide 2 is provided with a stopper 23 attached to the rear end of the rail-shaped guide member 21, which restricts the movement of the hammer 3 outside the rail-shaped guide member 21. This prevents the movable platform 3A from falling out of the rear end opening of the rail-shaped guide member 21, allowing the reinforcing material R to be struck reliably and safely.

[0056] (5) The reinforcing guide 2 is provided with a scale 24 for measuring the distance the reinforcing material R moves when struck by the hammer 3. By measuring the length of the rear end of the reinforcing material R that has been driven into the stone wall W using this scale 24, the insertion depth of the tip of the reinforcing material R into the stone wall W during or after driving can be measured, making it possible to easily and reliably manage the insertion depth of the reinforcing bar R.

[0057] (6) The hammer 3 can be easily formed by making it a metal block with a circular or square cross-section and a predetermined weight. In this case, by using a metal component that is the striking part of a typical hammer for the hammer 3, the hammer 3 can be procured simply and at low cost. In this case, the hammer 3 can be fixed to the mobile base 3A by welding via a metal mounting base 301 such as a reinforcing bar, so that the mobile base 3A is not deformed and can be securely fixed to the mobile base 3A.

[0058] (7) By providing the hammer 3 with a handle that can be gripped by the operator's hand, the operator can securely grip the hammer 3 and move the hammer 3 easily and reliably on the rail-shaped guide member 21.

[0059] (8) By forming a rectangular cross-section R1 on the rear end side of the reinforcing bar R in the insertion direction so that a tool can be fitted into it, and / or by forming a hole R2 on the rear end side of the reinforcing bar R in the insertion direction so that a tool or wire can be inserted in a direction perpendicular to the axis, it is possible to easily change the insertion position of the reinforcing bar R inserted into the stone wall W or to remove the inserted reinforcing bar R in the future.

[0060] In this embodiment, the support member 1 is a fixed structure, but the support member 1 may also consist of a movable frame that has a support portion capable of supporting the reinforcing guide 2 at a predetermined angle and can be movably installed on the surface side of the dry-stone wall W. In this case, the frame has at least a plurality of columnar or plate-shaped supports and rod-shaped or plate-shaped bases arranged at arbitrary angles between these supports, and the reinforcing guide 2 is mounted on the bases. This method also produces the same effects and advantages as the above embodiment. This mobile frame may also be used in conjunction with support members that constitute fixed structures such as scaffolding.

[0061] Furthermore, in this embodiment, a C-shaped rail member such as channel steel was used for the rail-shaped guide member 21 of the reinforcing guide 2, but this rail-shaped guide member 21 may also be a rail member with an L-shaped or H-shaped cross-section, in which case the movable platform 3A should have wheels or rollers that can engage with these rail members and roll. Furthermore, the rail-shaped guide member 21 may be a slide rail with a cross-section such as C-shaped, L-shaped, or H-shaped, and the movable platform 3A may be a slider without wheels or rollers that is slidably engaged with these slide rails. In this case, if necessary, the reinforcing material R may be placed along the upper or lower surface or along the side surface of the rail-shaped guide member 21. This method also produces the same effects and advantages as the above embodiment.

[0062] Furthermore, in this embodiment, the support member 1 is made of a single pipe, and a single pipe is provided for the reinforcing guide 2, allowing the reinforcing guide 2 to be easily attached to the support member 1 via a flexible clamp C. However, both the support member 1 and the reinforcing guide 2 can be changed to various materials as long as they have the same function as described above, and accordingly, the fixing members such as the clamp C for attaching the reinforcing guide 2 to the support member 1 can also be changed to various materials as long as the reinforcing guide 2 can be attached to the support member 1 at a predetermined angle. This method also produces the same effects and advantages as the above embodiment. [Explanation of Symbols]

[0063] E. Reinforcement bar insertion device for stone walls (this device) K Reinforcement method for stone walls (main method) 1. Support member 11. Support posts (vertical single pipes) 12. Support posts (vertical single pipes) 2. Reinforcement Guide 21 Rail-shaped guide member (channel steel) 210 Insertion port 22 Ring-shaped guide member 221 Mounting plate 23 Stopper 24 divisions 25 Mounting components 3 Hammers 3A mobile platform 31 units 32 wheels (guide rollers) 301 Mounting base R Reinforcement material (rebar) R1 Rectangular cross-section R2 hole W Ishigaki Wo gap C-clamp (adjustable clamp)

Claims

1. In a stone wall reinforcement construction method in which a dry-stone wall is reinforced by inserting a rod-shaped reinforcing material containing reinforcing bars into the gaps in the stone wall from the surface of the stone wall, a stone wall reinforcement reinforcing bar insertion device used for inserting the reinforcing material into the gaps in the stone wall, Support members installed on the surface side of the dry-stone wall, A reinforcing material guide is supported by the support member, and the tip of the reinforcing material faces the gap in the stone wall, and the reinforcing material is positioned and moved from the gap in the stone wall in a predetermined insertion direction, A hammer is positioned to be movable along the reinforcing member guide and strikes the rear end of the reinforcing member, Equipped with, By positioning the reinforcing material on the reinforcing guide, the tip of the reinforcing material is positioned facing the gap in the stone wall, and the reinforcing material is directed from the gap in the stone wall in a predetermined insertion direction. The reinforcing material is then struck from the rear end by moving the hammer along the reinforcing material guide to insert it into the gap in the stone wall. A reinforcing bar insertion device for stone walls, characterized by the following features.

2. The stone wall reinforcing bar insertion device according to claim 1, wherein the support member includes a pair of support columns installed in parallel in front of the surface of the dry-stone wall, one of which is close to the surface of the dry-stone wall and the other is spaced away from the surface of the dry-stone wall, and the reinforcing guide is installed between the pair of support columns at a predetermined angle.

3. The stone wall reinforcing bar insertion device according to claim 1, wherein scaffolding is erected on the surface side of the dry-stone wall, the support members consist of posts erected close to the surface of the dry-stone wall of the scaffolding and posts erected at a distance from the surface of the dry-stone wall, and the reinforcing guide is installed between each of the posts at a predetermined angle via clamps.

4. The stone wall reinforcing bar insertion device according to claim 1, wherein the support member has a support portion capable of supporting the reinforcing material guide at a predetermined angle, and comprises a frame that can be movably installed on the surface side of the dry-stone wall.

5. The reinforcing material guide comprises a rail-shaped guide member extending in a rail-like manner so that a reinforcing material can be placed on its upper surface, and a ring-shaped guide member rising perpendicularly to the upper end of the rail-shaped guide member and facing the gap in the stone wall, wherein a movable base is slidably engaged with the rail-shaped guide member, and a hammer is mounted on the movable base, as described in claim 1, for inserting reinforcing bars into a stone wall.

6. The reinforcing material guide comprises a rail-shaped guide member extending in a C-shape cross-section with an opening on its upper surface on which a reinforcing material can be placed, and a ring-shaped guide member rising perpendicularly to the upper end of the rail-shaped guide member and facing the gap in the stone wall, wherein a movable platform is slidably engaged and positioned within the rail-shaped guide member, and a hammer is mounted on the movable platform, as described in claim 1, for inserting reinforcing bars into a stone wall.

7. The reinforcing bar insertion device for stone walls according to claim 6, having an insertion opening on the upper surface of a rail-shaped guide member for guiding a movable platform into the interior of the rail-shaped guide member.

8. The reinforcing bar insertion device for stone walls according to claim 6 or 7, wherein the movable platform comprises a platform body that can be inserted through an opening on the upper surface of a rail-shaped guide member and fitted into the rail-shaped guide member, and a plurality of wheels disposed on both sides of the platform body that can slide between the upper and lower surfaces of the rail-shaped guide member.

9. In a stone wall reinforcement construction method in which a rod-shaped reinforcing material containing reinforcing bars is inserted into the gaps in the stone wall from the surface of the dry-stone wall, the method for inserting the reinforcing material into the gaps in the stone wall is a stone wall reinforcing bar insertion method, A support member is installed on the surface side of the dry-stone wall, and the support member supports and installs a reinforcing material guide that positions and moves the reinforcing material from the gap in the stone wall toward a predetermined insertion direction, with the tip of the reinforcing material facing the gap in the stone wall. A hammer is movably positioned along the reinforcing guide to strike the rear end of the reinforcing material, By positioning the reinforcing material on the reinforcing guide, the tip of the reinforcing material is positioned facing the gap in the stone wall, and the reinforcing material is directed from the gap in the stone wall in a predetermined insertion direction. The reinforcing material is then struck from the rear end by moving the hammer along the reinforcing material guide to insert it into the gap in the stone wall. A method for inserting reinforcing bars into stone walls, characterized by the following features.

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