JP4530378B2 - Seismic reinforcement method for masonry wall and masonry wall reinforcement used therefor - Google Patents

Description

  The present invention relates to a method for seismic reinforcement of a masonry wall mainly for an empty retaining wall and a masonry wall reinforcement used therefor.

  When laying a train track or constructing a road near the slope of a slope with a steep slope (the lower end of the slope), if a landslide occurs, the damage is tremendous. Therefore, it goes without saying that appropriate slope protection is indispensable.

  Slope protectors include mortar and concrete sprays, slope frames, slope greening, reinforced earthworks, etc., all of which are appropriately selected according to the slope and soil properties, and widely used. ing.

  Here, as one of the reinforced earthwork, there is a so-called empty loading retaining wall that piles up masonry called machinite while filling the back with stones. In general, it is poor in earthquake resistance compared to a concrete retaining wall (a type of gravity retaining wall) filled with concrete on the back.

  Therefore, in order to seismically reinforce such an empty retaining wall, a grout material injection hole is drilled at the corner where the stones meet and the center of the stone, and a reinforcing material such as a deformed reinforcing bar is formed in the grout material injection hole. There is known a seismic reinforcement method in which a grout material is injected by inserting a grout pipe into a gap between a reinforcing material and a grout material injection hole after inserting a (core material).

JP2005-9207 JP-A-2005-9208 JP-A-2005-9209

  However, in the above-mentioned seismic reinforcement method, since the grout pipe must be inserted into the gap between the reinforcing material and the grout material injection hole after the reinforcement material is inserted into the grout material injection hole, the hole diameter is naturally about 100 mm, for example. The following problems arise due to this.

  In other words, in order to fill the gap between the garnets with the grout material, it is necessary that the grout material has an appropriate viscosity. Will overflow from the grout injection hole.

  On the other hand, when lowering the injection pressure so that the grout material does not overflow from the grout material injection hole, the viscosity of the grout material must be lowered so that the grout material can be injected even at low pressure. As it travels along the lining stone, it hangs down by its own weight, and the filling range of the grout material is biased.

  Thus, the conventional seismic reinforcement method cannot properly fill the grout material in the gap between the garnets, and as a result, the problem is that the stones and the garnets cannot be integrated. It was.

  Also, because the burial stone is not fixed with concrete etc., when drilling the grout material injection hole, the burial stone escapes from the tip of the drilling rod, or conversely the tip of the drilling rod If the boring stones bite into the hole, the rotation stops, the boring stones are clogged with the boring rod, or if the boring stones escape, it returns to the original position when the boring rod is pulled out. There has also been a problem that the reinforcing material cannot be inserted.

  The present invention has been made in consideration of the above-described circumstances, and a method for seismic reinforcement of a masonry wall capable of injecting grout material so that a machinite stone and a lining stone can be integrated, and a masonry wall used therefor The object is to provide a reinforcing material.

  In order to achieve the above object, a masonry wall reinforcing material according to the present invention comprises a hollow porous tube body formed sharply and a male provided on the proximal end side of the hollow porous tube body. A threaded portion, a striking cap screwed to the male threaded portion, a connecting female thread member that connects the male threaded portion and the tip of the grout hose with the striking cap removed, and The male screw portion is formed with a through hole that communicates the hollow space of the hollow porous tube main body with the grout hose. The head cap is screwed into the male screw portion with the grout hose removed. In addition, a hook-like contact portion with which the tip of the impact cap abuts in a state where the impact cap is screwed to the male screw portion is formed to project from the peripheral surface of the hollow porous tube body. .

  In addition, the masonry wall reinforcing material according to the present invention includes a hollow porous tube body formed sharply and a male screw on the outer peripheral surface provided on the proximal end side of the hollow porous tube body. A bottomed cylindrical body having a female thread on the inner peripheral surface thereof, a composite threaded portion including a male threaded portion projecting concentrically from the bottom of the bottomed cylindrical body, and a female thread of the bottomed cylindrical body In the state where the cap for impact screwed to, the female screw member for connecting the male screw part and the tip of the grout hose with each other in a state where the cap for impact is removed, and the grout hose removed A head cap threadedly engaged with the male screw of the bottomed cylindrical body, and a through hole for communicating the hollow space of the hollow porous tube main body with the grout hose is formed in the bottomed cylindrical body and the male screw portion. And forming the impact cap on the female thread. At engaged state in which the tip of the striking cap formed a bottomed cylindrical body so as to contact the bottom portion of the bottomed tubular body.

  Moreover, the masonry wall reinforcing material according to the present invention includes an impact protection cap that is screwed into the male screw of the bottomed cylindrical body.

  Moreover, the masonry wall reinforcing material according to the present invention is as described in claim 4, wherein the ejection holes are arranged in the hollow porous tube main body so as to be arranged linearly along the material axis of the hollow porous tube main body. Formed.

  Moreover, the masonry wall reinforcing material according to the present invention is such that, as described in claim 5, the ejection holes are formed such that their hole diameters are gradually reduced from the front end to the base end side.

  Further, according to the seismic reinforcement method for a masonry wall according to the present invention, a masonry wall constituting the masonry wall is drilled to form a grout material injection hole in the masonry wall. A masonry wall reinforcing material provided with a tube body is inserted into the grout material injection hole from the distal end portion of the hollow porous tube body, and an impact cap is attached to a male screw portion provided on the proximal end side of the hollow porous tube body. The masonry wall reinforcement is driven using the striking cap as a striking surface while screwing and pushing the burrs filled on the back of the masonry material, and the striking cap is removed from the male thread portion Instead, the male screw portion and the tip of the grout hose are connected to each other via a connecting female screw member, and the grout material is passed through the through hole formed in the grout hose and the male screw portion. Pressurized in hollow space The grout material is ejected from the ejection hole formed in the hollow perforated tube main body to the periphery, the female screw member for connection is removed from the male screw portion, and the grout material is hardened and then formed on the head plate The male screw portion is inserted into the pipe insertion hole, the head cap is screwed into the male screw portion, and the head cap is tightened in a state where the head plate is applied to the masonry material It is.

  In addition, the method for seismic reinforcement of a masonry wall according to the present invention, as described in claim 7, forms a grout material injection hole in the masonry material by drilling a masonry material constituting the masonry wall, A masonry wall reinforcing material provided with a tube main body is inserted into the grout material injection hole from the distal end portion of the hollow porous tube main body, and a bottomed portion constituting a composite screw portion provided on the proximal end side of the hollow porous tube main body A striking cap is screwed to a female screw cut on the inner peripheral surface of the cylindrical body, and a striking protection cap is screwed to a male screw cut on the outer peripheral surface of the bottomed cylindrical body. The masonry wall reinforcing material is driven using the hitting cap as a hitting surface while pushing back the burial stone filled on the back surface, the hitting cap is removed from the female screw, and the same is removed from the bottom of the bottomed cylindrical body. Male threaded portion and grout hose protruding in a core shape The distal ends are connected to each other via a connecting female screw member, and the grout material is passed through the bottom of the bottomed cylindrical body and the male screw portion through the grout hose and the hollow space of the hollow perforated tube body. After the grout material is ejected to the periphery from the ejection hole formed in the hollow porous tube main body by pressure injection, the female screw member for connection is removed from the male screw portion, and the grout material is cured, the head The composite screw portion is inserted into a pipe insertion hole formed in the plate, a head cap is screwed into a male screw of the bottomed cylindrical body constituting the composite screw portion, and the head plate is used as the masonry material The head cap is tightened in a state where the head cap is applied.

  In the seismic reinforcement method for a masonry wall and the masonry wall reinforcing material used therefor according to the first invention, first, a masonry material constituting the masonry wall is drilled to form a grout material injection hole in the masonry material. As the drilling position, for example, the center of the masonry material or the vicinity of the corner where the adjacent masonry materials meet can be considered.

  Next, the hollow porous tube main body constituting the masonry wall reinforcing material is inserted into the grout material injection hole from the tip portion. The hollow porous tube main body is preferably formed of, for example, a steel hollow rod, and the masonry wall reinforcing material provided with such a hollow porous tube main body also serves as a grout injection tube.

  Next, the striking cap is screwed into the male thread portion provided on the proximal end side of the hollow porous tube main body. Here, when the impact cap is screwed, it is firmly screwed until the tip of the impact cap comes into contact with the hook-like contact portion formed to project from the peripheral surface of the hollow porous tube main body.

  Next, the masonry wall reinforcement is driven using the striking cap as the striking surface while pushing away the burrs filled on the back of the masonry. The driving may be performed by an operator using, for example, a hammer. In addition, since the masonry wall reinforcing material has a hollow porous tube body formed sharply, it can be driven to a desired depth while letting the lining stone escape to the side by adjusting the striking force at the time of driving appropriately. . Moreover, it is arbitrary whether it penetrates to the back ground by penetrating the filling area of the garnet.

  When the driving operation is completed, the impact cap is removed from the male screw portion, and instead of that, the connecting female screw member is screwed in, and the tip of the grout hose is screwed into the opposite side of the connecting female screw member. By this operation, the male screw portion and the tip of the grout hose are connected to each other via the connecting female screw member.

  The grout material may be appropriately selected from, for example, cement milk, mortar and other known grout materials. In addition, the base end side of the grout hose is connected to a pumping pump capable of pumping such a grout material.

  Next, the grout material is fed into the masonry wall reinforcing material via the grout hose by driving the pressure feed pump. Further, the grouting material is injected under pressure into the hollow space of the hollow porous tube main body through the through-hole formed in the male screw portion constituting the masonry wall reinforcing material, and the ejection hole formed in the hollow porous tube main body From around.

  Next, the female screw member for connection is removed from the male screw portion, and the grout hose is removed.

  When the grout material is cured, the hook-shaped contact portion and the male screw portion are inserted into the pipe insertion hole formed in the head plate, and the head cap is screwed into the male screw portion. Then, the head cap is tightened with the head plate applied to the masonry.

  In the method of seismic reinforcement of a masonry wall according to the second invention and the masonry wall reinforcement used therefor, first, as in the first invention, first, the masonry constituting the masonry wall is drilled and grouted on the masonry A material injection hole is formed.

  Next, the masonry wall reinforcing material provided with the hollow porous tube main body is inserted into the grout material injection hole from the tip portion of the hollow porous tube main body. What is necessary is just to comprise a hollow porous tube main body similarly to 1st invention.

  Next, the impact cap is screwed onto the female screw cut on the inner peripheral surface of the bottomed cylindrical body constituting the composite threaded portion provided on the proximal end side of the hollow porous tube main body and the outer periphery of the bottomed cylindrical body Screw the impact protection cap onto the male thread cut into the surface. Here, when screwing the cap for impact, it is firmly screwed until its tip abuts against the bottom of the bottomed cylindrical body.

  Next, the masonry wall reinforcement is driven using the striking cap as the striking surface while pushing away the burrs filled on the back of the masonry. The driving may be performed by an operator using, for example, a hammer. In addition, since the masonry wall reinforcing material has a hollow porous tube body formed sharply, it can be driven to a desired depth while letting the lining stone escape to the side by adjusting the striking force at the time of driving appropriately. . Moreover, it is arbitrary whether it penetrates to the back ground by penetrating the filling area of the garnet.

  When the driving operation is completed, the impact cap is removed from the female screw of the bottomed cylindrical body.

  Next, the male screw portion projecting concentrically from the bottom of the bottomed cylindrical body and the tip of the grout hose are connected to each other via a connecting female screw member.

  The grout material may be appropriately selected from, for example, cement milk, mortar and other known grout materials. In addition, the base end side of the grout hose is connected to a pumping pump capable of pumping such a grout material.

  Next, the grout material is fed into the masonry wall reinforcing material through the through hole formed in the bottom portion of the bottomed cylindrical body and the male screw portion and the grout hose by driving the pressure feed pump. Further, a grout material is pressurized and injected into the hollow space of the hollow porous tube main body, and is ejected to the surroundings from the ejection holes formed in the hollow porous tube main body.

  Next, the female screw member for connection is removed from the male screw portion, and the grout hose is removed.

  When the grout material is hardened, the composite screw portion is inserted into a pipe insertion hole formed in the head plate, and the head cap is screwed onto the male screw of the bottomed cylindrical body constituting the composite screw portion. Then, the head cap is tightened with the head plate applied to the masonry.

  In addition, when the composite screw part is inserted into the pipe insertion hole of the head plate, if the impact protection cap cannot be inserted due to interference, remove the impact protection cap from the male screw of the bottomed cylindrical body in advance. Just keep it.

  Thus, according to the seismic reinforcement method of a masonry wall and the masonry wall reinforcement material used therefor according to the first and second inventions, the grout material can be injected using the masonry wall reinforcement material. The diameter of the grout material injection hole to be drilled can be made significantly smaller than before.

  Therefore, combined with the action of the hollow porous tube main body constituting the masonry wall reinforcement, that is, the action of causing the grout material injected into the hollow space to be ejected from the ejection hole, the injection pressure is increased to inject a highly viscous grout material. Even if it is set, there is no concern that the grout material leaks from the grout material injection hole.

  Therefore, not only can the injected grout material be reliably filled in the gap between the lining stones and integrated with the masonry material, but also the reinforcement effect of the masonry wall reinforcement material is added, so the masonry wall is high It becomes possible to reinforce earthquake resistance at the level.

  How to form the ejection hole is arbitrary, but when the ejection hole is formed in the hollow porous tube main body so as to be linearly arranged along the material axis of the hollow porous tube main body, When the reinforcing material is driven, the masonry wall reinforcing material is inserted into the grout material injection hole of the masonry material so that all the ejection holes of the hollow perforated tube main body face upward, and is driven into the garnet filling region.

  In this way, the grout material is ejected upward of the masonry wall reinforcement, and the injection pressure is appropriately adjusted in consideration of the weight and viscosity of the grout material so as to surround the hollow porous tube main body. As a result, the grout material can be filled in the gaps between the lining stones, and the masonry wall reinforcing material, the lining stones and the masonry materials can be more reliably integrated.

  Furthermore, if such ejection holes are formed so that their hole diameters are gradually reduced from the front end to the base end side, the grout material pressure-injected into the hollow space of the hollow porous tube body has substantially the same ejection speed (flow rate). ), And the grouting material is surely prevented from being unevenly distributed, and the grouting material can be reliably ejected around the masonry wall reinforcing material.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Embodiments of a method for seismic reinforcement of a masonry wall according to the present invention and a masonry wall reinforcing material used therefor will be described below with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.

(First embodiment)

  FIG. 1 is a view showing a masonry wall reinforcing material according to the present embodiment. As can be seen in the figure, the masonry wall reinforcing material 1 according to the present embodiment includes a hollow porous tube body 2 formed sharply, a male screw portion 3 provided on the proximal end side of the hollow porous tube body, A striking cap 4 screwed into the male screw portion, a connecting female screw member 6 that connects the male screw portion 3 and the tip of the grout hose 5 with the striking cap removed, and a grout hose The head cap 7 is screwed into the male screw portion 3 in a state in which 5 is removed.

  The hollow porous tube main body 2 can be composed of, for example, a steel hollow rod, and the ejection holes 8 of the hollow porous tube main body 2 are arranged along the material axis of the hollow porous tube main body as can be seen in FIG. They are arranged in a straight line, in other words, so that the grouting material is ejected in the same direction. In addition, the ejection holes 8 are formed so that their hole diameters are gradually reduced from the distal end to the proximal end side.

  The male screw portion 3 is formed with a through hole 10 for communicating the inside of the grout hose with the hollow space 9 of the hollow porous tube body 2 in a state where the grout hose 5 is connected. That is, it can be said that the male screw portion 3 is also formed in a hollow cylindrical shape like the hollow porous tube main body 2.

  The hollow inner surface of the impact cap 4 is internally threaded so that it can be screwed into the external thread portion 3 as described above. A hook-shaped contact portion 11 with which the four tips 12 abut is formed so as to project. Then, when the striking cap 4 is screwed into the male thread portion 3, as shown in FIG. 3, the scissor-shaped abutting portion so that the tip 12 of the striking cap 4 abuts on the scissor-shaped abutting portion 11. With this configuration, it is possible to prevent the thread from being damaged by the striking force.

  The connecting female screw member 6 is configured to connect the male screw portion 3 and the connecting portion 13 provided at the tip of the grout hose 5 with the impact cap 4 removed.

  The head cap 7 has a female screw cut into its hollow inner surface, and can be screwed into the male screw portion 3 with the grout hose 5 removed, and an annular presser formed at the tip of the cap. A concave portion 14 is formed so as to be surrounded by the portion 15, and the annular pressing portion 15 does not interfere with the hook-shaped contact portion 11 when screwed into the male screw portion 3.

  In the masonry wall reinforcing material 1 according to the present embodiment and the seismic reinforcement method for a masonry wall using the masonry wall reinforcement material, first, as shown in FIG. Then, a grout injection hole 42 is formed in the Satoshi stone.

  As the drilling position, as shown in the same figure (a), in the case of the center of the Sorachi stone 41, as shown in FIG. You could think so.

  When the drilling is completed, as shown in FIG. 5 (b), the hollow porous tube main body 2 constituting the masonry wall reinforcing material 1 is inserted into the grout material injection hole 42 from the tip portion. Here, when the hollow porous tube main body 2 is inserted, the ejection holes 8 are directed upward.

  Next, the impact cap 4 is screwed into the male screw portion 3 provided on the proximal end side of the hollow porous tube main body 2. Here, when the impact cap 4 is screwed, it is firmly screwed until its tip 12 comes into contact with the hook-shaped contact portion 11.

  Next, the masonry wall reinforcing material 1 is driven using the hitting cap 4 as a hitting surface while pushing away the burial stone 43 filled on the back surface of the mochi stone 41. The driving may be performed by an operator using, for example, a hammer. In addition, since the masonry wall reinforcing material 1 has the hollow porous tube main body 2 formed sharply, by adjusting the striking force at the time of driving as appropriate, the lining stone 43 is allowed to escape to the side and to a desired depth. You can drive in.

  When the driving operation is completed, the impact cap 4 is removed from the male threaded portion 3, and a female threading member 6 is screwed in instead, and the tip of the grout hose 5 is threaded on the opposite side of the female threading member 6 (see FIG. 5 (c)). By such an operation, the male screw portion 3 and the connecting portion 13 provided at the tip of the grout hose 5 are connected to each other via the connecting female screw member 6 as shown in FIG.

  The grout material may be appropriately selected from, for example, cement milk, mortar and other known grout materials. In addition, the base end side of the grout hose is connected to a pumping pump (not shown) that can pump such a grout material.

  Next, the grout material is fed into the masonry wall reinforcement 1 via the grout hose 5 by driving the pressure pump. Further, a grout material is pressurized and injected into the hollow space 9 of the hollow porous tube main body 2 through the through hole 10 formed in the male screw portion 3 constituting the masonry wall reinforcing material 1, and the hollow porous tube main body is injected into the hollow porous tube main body. It is made to eject from the formed ejection hole 8 to the periphery (FIG. 5 (d)).

  Here, since the ejection hole 8 faces upward when the masonry wall reinforcing material 1 is inserted and driven, the grout material is ejected toward the upper side of the masonry wall reinforcing material 1, and the injection pressure By appropriately adjusting in consideration of the weight and viscosity of the grout material, the gaps of the burial stone 43 distributed in the region 44 surrounding the hollow porous tube main body 2 are filled.

  Further, since the ejection holes 8 are formed so that the diameters of the ejection holes 8 gradually become smaller from the front end to the proximal end side, the pressure-injected grout material has the ejection holes 8 at substantially the same ejection speed (flow rate). Erupted from.

  Next, the female screw member 6 for connection is removed from the male screw part 3, and the grout hose 5 is removed.

  When the grout material is cured, as shown in FIG. 7, the hook-like contact portion 11 and the male screw portion 3 on the proximal end side of the hollow porous tube main body 2 are inserted into the pipe insertion hole 72 formed in the head plate 71. Insert.

  Finally, the head cap 7 is screwed into the male screw portion 3, and then the head plate 71 is pressed against the Satoshi stone 41 by the annular pressing portion 15 provided at the tip of the head cap 7. Tighten the cap 7.

  FIG. 8 is a view of the state after the seismic reinforcement of the masonry wall using the masonry wall reinforcement 1 is seen from the front.

  As described above, according to the seismic reinforcement method of a masonry wall and the masonry wall reinforcement 1 used therefor according to the present embodiment, a grout material can be injected using the masonry wall reinforcement, so In addition, the diameter of the grout material injection hole 42 to be drilled can be made significantly smaller than before.

  Therefore, in combination with the action of the hollow porous tube main body 2 constituting the masonry wall reinforcement 1, that is, the action of ejecting the grout material injected into the hollow space from the ejection hole 8, the injection is performed to inject a highly viscous grout material. Even if the pressure is set high, there is no concern that the grout material leaks from the grout material injection hole 42.

  Therefore, not only can the injected grout material be reliably filled in the gap between the turning stones 43 and integrated with the Satoshi stone 41, but also the reinforcement effect of the stone masonry wall reinforcement 1 is added. It is possible to reinforce the walls at a high level.

  In addition, according to the seismic reinforcement method for a masonry wall and the masonry wall reinforcement 1 used therefor according to the present embodiment, when the masonry wall reinforcement 1 is inserted and driven, the ejection hole 8 faces upward. The material will be ejected upward, and the burial stone distributed within the region 44 surrounding the hollow porous tube body 2 by appropriately adjusting the injection pressure in consideration of the weight and viscosity of the grout material. 43 gaps are filled.

  Therefore, the masonry wall reinforcing material 1, the garnet 43, and the Satchi stone 41 can be more reliably integrated.

  Further, according to the seismic reinforcement method of a masonry wall according to the present embodiment and the masonry wall reinforcing material 1 used therefor, since the ejection holes 8 are formed so that their hole diameters are gradually reduced from the distal end to the proximal end side, The pressure-injected grout material is ejected from each ejection hole 8 at substantially the same ejection speed (flow rate). That is, in the grout material, the ejection pressure decreases toward the tip due to the frictional resistance with the inner surface of the hollow porous tube main body 2, but since the diameter of the ejection hole 8 is increased by that amount, eventually the ejection hole 8 From the same pressure.

  Therefore, the uneven distribution of the grout material can be reliably prevented, and the grout material can be reliably ejected around the masonry wall reinforcing material 1.

  Further, according to the seismic reinforcement method for a masonry wall according to the present embodiment and the masonry wall reinforcing material 1 used for the masonry wall, only the mochi stone 41 is targeted for drilling, and a garnet 43 is used as in the past. Is not subject to drilling.

  Therefore, it is possible to greatly reduce the construction time when the masonry walls are seismically reinforced.

  Moreover, according to the seismic reinforcement method for a masonry wall and the masonry wall reinforcement 1 used therefor according to the present embodiment, the grout material is injected using the masonry wall reinforcement 1 that has been driven in. Sex is not a problem. In other words, the burial stone 43 is generally not self-supporting on the back side of the machinite stone, and even if an attempt is made to grout after drilling the burial stone 43, the burial stone is turned off after drilling. There is no room for the conventional concern that the stone 43 collapses and blocks the grout hole that has been drilled.

(Second Embodiment)

  Next, a second embodiment will be described. Note that components that are substantially the same as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  FIG. 9 is a view showing a masonry wall reinforcing material according to the present embodiment. As can be seen in the figure, the masonry wall reinforcing material 91 according to the present embodiment includes a sharply formed hollow porous tube main body 2, a composite threaded portion 93, an impact cap 95, an impact protection cap 96, The connecting female screw member 6 and a head cap 97 are included.

  As in the first embodiment, the hollow porous tube main body 2 can be made of, for example, a steel hollow rod. The ejection hole 8 of the hollow porous tube main body 2 is formed of the hollow porous tube as shown in FIG. It is arranged in a straight line along the material axis of the main body, in other words, formed so that the ejection direction of the grout material is the same direction. In addition, the ejection holes 8 are formed so that their hole diameters are gradually reduced from the distal end to the proximal end side.

  The composite threaded portion 93 is provided on the proximal end side of the hollow porous tube main body 2, and has a bottomed cylindrical body 100 in which a male screw is cut on the outer peripheral surface and a female screw is cut on the inner peripheral surface, and the bottomed cylindrical body. It consists of a male thread portion 94 projecting concentrically from the bottom, and a through hole 101 communicating with the hollow space 9 of the hollow porous tube body 2 is provided at the bottom.

  The male thread portion 94 is formed with a through hole 10 for communicating the inside of the grout hose with the hollow space 9 of the hollow porous tube main body 2 in a state where the grout hose 5 is connected. That is, it can be said that the male screw portion 3 is also formed in a hollow cylindrical shape like the hollow porous tube main body 2.

  The batting cap 95 forms a hollow cylinder for avoiding interference with the male threaded portion 94 in the mounted state, and has a male thread cut on the peripheral surface thereof, and is screwed into the female thread of the bottomed tubular body 100. It is formed to be. Here, the bottomed cylinder 100 is configured such that when the impact cap 95 is screwed into the female screw of the bottomed cylinder 100, the tip of the impact cap abuts the bottom of the bottomed cylinder 100. With this configuration, it is possible to prevent the thread from being damaged by the striking force.

  The connecting female screw member 6 is configured to connect the male screw portion 94 and the tip of the grout hose 5 to each other with the impact cap 95 removed.

  The head cap 97 has a female screw cut into its hollow inner surface, and can be screwed into the male screw of the bottomed cylindrical body 100 with the grout hose 5 removed. An annular pressing portion 98 for pressing a head plate 71 described later is formed.

  In the masonry wall reinforcing material 91 according to the present embodiment and the seismic reinforcement method for a masonry wall using the masonry wall reinforcing material 91, first, as in FIG. 4 of the first embodiment, the Satoshi stone 41 as a masonry material constituting the masonry wall. The grout material injection hole 42 is formed in the Satoshi stone. In addition, since the specific example of the drilling position was already demonstrated in the same embodiment, the description is abbreviate | omitted here.

  When the drilling is completed, the hollow perforated tube main body 2 constituting the masonry wall reinforcing material 91 is inserted into the grout material injection hole 42 from the tip portion thereof, as in FIG. 5B of the first embodiment. Here, when the hollow porous tube main body 2 is inserted, the ejection holes 8 are directed upward.

  Next, as shown in FIG. 11, the impact cap 95 is applied to the female screw cut on the inner peripheral surface of the bottomed cylindrical body 100 constituting the composite screw portion 93 provided on the proximal end side of the hollow porous tube main body 2. And the impact protection cap 96 is screwed onto the male screw cut on the outer peripheral surface of the bottomed cylindrical body 100. Here, when the impact cap 95 is screwed, it is firmly screwed until its tip abuts against the bottom of the bottomed cylindrical body 100.

  Next, the masonry wall reinforcing material 91 is driven using the hitting cap 95 as a hitting surface while pushing away the burial stone 43 filled on the back surface of the mochi stone 41. The driving may be performed by an operator using, for example, a hammer. In addition, since the masonry wall reinforcing material 91 has the hollow porous tube main body 2 formed sharply, by adjusting the striking force at the time of driving as appropriate, the lining stone 43 is allowed to escape to the side and to a desired depth. You can drive in.

  When the driving operation is completed, the batting cap 95 is removed from the bottomed cylindrical body 100, and instead, as shown in FIG. 12, the male threaded portion 94 is provided concentrically protruding from the bottom of the bottomed cylindrical body 100. The connecting female screw member 6 is screwed and the tip of the grout hose 5 is screwed into the opposite side of the connecting female screw member 6 (see FIG. 5C of the first embodiment). By this operation, the male screw portion 94 and the connecting portion 13 provided at the tip of the grout hose 5 are connected to each other via the connecting female screw member 6 as shown in FIG. In addition, since the description regarding a grout material is the same as that of 1st Embodiment, the description is abbreviate | omitted here.

  Next, the grout material is fed into the masonry wall reinforcing material 91 via the grout hose 5 by driving a pressure pump (not shown) connected to the opposite side of the grout hose 5. Further, grout is formed in the hollow space 9 of the hollow porous tube main body 2 through the through hole 10 formed in the male screw portion 94 constituting the masonry wall reinforcing material 91 and the through hole 101 formed in the bottomed cylindrical body 100. The material is injected under pressure and ejected from the ejection holes 8 formed in the hollow porous tube body (see FIG. 5 (d) of the first embodiment).

  Here, since the ejection hole 8 is directed upward when the masonry wall reinforcing material 91 is inserted and driven, the grout material is ejected toward the upper side of the masonry wall reinforcing material 91, and the injection pressure By appropriately adjusting in consideration of the weight and viscosity of the grout material, the gaps of the burial stone 43 distributed in the region 44 surrounding the hollow porous tube main body 2 are filled.

  Further, since the ejection holes 8 are formed so that the diameters of the ejection holes 8 gradually become smaller from the front end to the proximal end side, the pressure-injected grout material has the ejection holes 8 at substantially the same ejection speed (flow rate). Erupted from.

  Next, the female screw member 6 for connection is removed from the male screw part 94, and the grout hose 5 is removed.

  When the grout material is cured, as shown in FIG. 13, the composite screw portion 93 on the proximal end side of the hollow porous tube main body 2 is inserted into the pipe insertion hole 72 formed in the head plate 71.

  Finally, the head cap 97 is screwed onto the male screw of the bottomed cylindrical body 100 constituting the composite screw portion 93, and then the head plate 71 is attached by the annular pressing portion 98 provided at the tip of the head cap 97. The head cap 97 is tightened so as to press against the Satoshi stone 41.

  As described above, according to the seismic reinforcement method of a masonry wall and the masonry wall reinforcement 91 used therefor according to the present embodiment, a grout material can be injected using the masonry wall reinforcement, so In addition, the diameter of the grout material injection hole 42 to be drilled can be made significantly smaller than before.

  Therefore, in combination with the action of the hollow porous tube main body 2 constituting the masonry wall reinforcing material 91, that is, the action of ejecting the grout material injected into the hollow space from the ejection hole 8, the injection is performed to inject a highly viscous grout material. Even if the pressure is set high, there is no concern that the grout material leaks from the grout material injection hole 42.

  Therefore, not only can the injected grout material be reliably filled in the gap between the lining stones 43 and integrated with the Satoshi stone 41, but also the reinforcement effect by the masonry wall reinforcement 91 is added. It is possible to reinforce the walls at a high level.

  Moreover, according to the seismic reinforcement method for a masonry wall and the masonry wall reinforcement 91 used therefor according to the present embodiment, when the masonry wall reinforcement 91 is inserted and driven, the ejection hole 8 faces upward, so that the grout The material will be ejected upward, and the burial stone distributed within the region 44 surrounding the hollow porous tube body 2 by appropriately adjusting the injection pressure in consideration of the weight and viscosity of the grout material. 43 gaps are filled.

  Therefore, the masonry wall reinforcing material 91, the burrow stone 43, and the Sachichi stone 41 can be more reliably integrated.

  Further, according to the seismic reinforcement method of a masonry wall according to the present embodiment and the masonry wall reinforcing material 91 used therefor, since the ejection holes 8 are formed so that their hole diameters are gradually reduced from the distal end to the proximal end side, The pressure-injected grout material is ejected from each ejection hole 8 at substantially the same ejection speed (flow rate). That is, in the grout material, the ejection pressure decreases toward the tip due to the frictional resistance with the inner surface of the hollow porous tube main body 2, but since the diameter of the ejection hole 8 is increased by that amount, eventually the ejection hole 8 From the same pressure.

  Therefore, the uneven distribution of the grout material can be reliably prevented, and the grout material can be surely ejected around the masonry wall reinforcing material 91.

  In addition, according to the seismic reinforcement method of a masonry wall and the masonry wall reinforcement 91 used therefor according to the present embodiment, only the Shirochi stone 41 is targeted for drilling, and the lining stone 43 as in the conventional case. Is not subject to drilling.

  Therefore, it is possible to greatly reduce the construction time when the masonry walls are seismically reinforced.

  Moreover, according to the seismic reinforcement method of a masonry wall and the masonry wall reinforcement 91 used therefor according to the present embodiment, the grout material is injected using the masonry wall reinforcement 91 that has been driven in. Sex is not a problem. In other words, the burial stone 43 is generally not self-supporting on the back side of the machinite stone, and even if an attempt is made to grout after drilling the burial stone 43, the burial stone is turned off after drilling. There is no room for the conventional concern that the stone 43 collapses and blocks the grout hole that has been drilled.

  In the first and second embodiments described above, the ejection holes 8 are formed in the hollow porous tube body so as to be linearly arranged along the material axis of the hollow porous tube body 2, and the ejection holes 8 are located upward. The masonry wall reinforcements 1 and 91 are inserted and driven so as to face, but it is possible to evenly fill the gaps of the garnet 43 distributed within the region 44 surrounding the hollow porous tube main body 2. In this case, the above-described configuration is not necessarily required.

  In the first and second embodiments described above, the ejection holes 8 are formed so that the diameters of the ejection holes 8 gradually decrease from the distal end to the proximal end side. However, the frictional resistance between the grout material and the hollow porous tube main body 2 is reduced. If the pressure loss is small and the pressure loss can be substantially ignored, the above-described configuration is not necessarily required.

  Further, in the first and second embodiments described above, the head plate 71 is pressed against the Sapphire stone 41 by the annular pressing portions 15 and 98 provided at the tips of the head caps 7 and 97. The head plate 71 serving as a washer is not an essential component of the present invention, and the head plate 71 is omitted. Instead, a bowl-shaped washer is provided at the peripheral edge of the head cap 7, 97. Or the head caps 7, 97 may be enlarged.

  In the second embodiment, the thread protection cap 96 is screwed into the male thread of the bottomed cylindrical body 100 to prevent the thread from being damaged by the striking. It doesn't matter. Further, after the driving is finished, the impact protection cap 96 is removed, but without being removed, the head cap 97 is screwed into the bottomed cylindrical body 100 without being removed, and the head cap 97 is screwed in the remaining state. It doesn't matter.

  In this case, the inner diameter of the pipe insertion hole 72 of the head plate 71 needs to be larger than the outer diameter when the impact protection cap 96 is left on the bottomed cylindrical body 100.

Schematic of the masonry wall reinforcement 1 which concerns on 1st Embodiment. The top view of the hollow porous pipe main body 2 which concerns on 1st Embodiment, and the external thread part 3 provided in the base end side. Sectional drawing of the masonry wall reinforcement 1 which screwed the cap 4 for striking into the external thread part 3. FIG. The front view which showed a mode that the masonry wall was drilled and the grout material injection hole 42 was formed. The vertical sectional view which showed the procedure of earthquake-proof reinforcement. Sectional drawing which showed the masonry wall reinforcement 1 at the time of grout injection | pouring. Sectional drawing which showed a mode that the head cap 7 was screwed. The front view of the masonry wall which earthquake-proof reinforcement was finished. Schematic of the masonry wall reinforcement material 91 which concerns on 2nd Embodiment. The top view of the hollow porous pipe main body 2 which concerns on 2nd Embodiment, and the composite thread part 93 provided in the base end side. Sectional drawing of the masonry wall reinforcing material 91 which screwed the cap 95 for striking into the bottomed cylindrical body 100. FIG. Sectional drawing which showed the masonry wall reinforcement 91 at the time of grout injection | pouring. Sectional drawing which showed a mode that the head cap 97 was screwed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,91 Masonry wall reinforcement material 2 Hollow perforated pipe main body 3 Male thread part 4 Blow cap 5 Grout hose 6 Female thread member 7 and 97 Head cap 8 Ejection hole 10 and 101 Through-hole 11 Sag-shaped contact part 41 Machinishi (masonry material)
42 Grout material injection hole 43 Urekkuri stone 71 Head plate 93 Composite screw portion 94 Male screw portion 95 Blow cap 96 Blow protection cap

Claims (7)

The hollow porous tube main body formed sharply, the male screw portion provided on the proximal end side of the hollow porous tube main body, the striking cap screwed to the male screw portion, and the striking cap removed A female screw member for connecting the male screw part and the tip of the grout hose with each other in a state, and a head cap screwed into the male screw part in a state where the grout hose is removed, A through hole for communicating the hollow space of the hollow porous tube main body with the grout hose is formed in the male screw part, and the tip of the hitting cap is screwed into the male screw part. A masonry wall reinforcing material, characterized in that a hook-shaped contact portion with which the contact is formed protrudes from the peripheral surface of the hollow porous tube main body. A hollow porous tube body formed sharply, a bottomed tube body provided on a proximal end side of the hollow porous tube body, a male screw cut on an outer peripheral surface, and a female screw cut on an inner peripheral surface, and the bottomed tube In a state where the composite screw portion composed of a male screw portion projecting concentrically from the bottom portion of the body, the striking cap screwed to the female screw of the bottomed cylindrical body, and the striking cap removed A female screw member for connecting the male screw part and the tip of the grout hose with each other, and a head cap screwed to the male screw of the bottomed cylindrical body with the grout hose removed; A through-hole for communicating the hollow space of the hollow porous tube main body with the grout hose is formed in the bottomed cylindrical body and the male screw part, respectively, and the striking cap is screwed into the female screw. The tip of the impact cap is the bottom of the bottomed cylindrical body Masonry wall reinforcement, characterized in that the formation of the bottomed cylindrical body to abut. The masonry wall reinforcing material according to claim 2, further comprising an impact protection cap screwed into the male screw of the bottomed cylindrical body. The masonry wall reinforcing material according to any one of claims 1 to 3, wherein the ejection holes are formed in the hollow porous tube main body so as to be arranged linearly along the material axis of the hollow porous tube main body. The masonry wall reinforcing material according to any one of claims 1 to 3, wherein the ejection holes are formed so that the diameters of the ejection holes gradually decrease from the front end to the base end side. A masonry material constituting the masonry wall is drilled to form a grout material injection hole in the masonry material, and the masonry wall reinforcing material provided with a hollow porous tube main body is connected to the grout from the tip portion of the hollow porous tube main body. It is inserted into the material injection hole, and a striking cap is screwed into the male thread portion provided on the proximal end side of the hollow porous tube main body so as to push the lining stone filled on the back of the masonry material. However, the masonry wall reinforcement is driven using the striking cap as a striking surface, and the striking cap is detached from the male screw portion, and instead of the male screw portion and the tip of the grout hose via the connecting female screw member. The grout material is pressure-injected into the hollow space of the hollow porous tube body through the through holes formed in the grout hose and the male screw portion, and the grout material is injected from the ejection holes formed in the hollow porous tube body. Erupt around The female screw member for connection is removed from the male screw portion, and after the grout material is cured, the male screw portion is inserted into a pipe insertion hole formed in the head plate, and the head portion is inserted into the male screw portion. A method for seismic reinforcement of a masonry wall, wherein a cap is screwed and the head cap is tightened in a state where the head plate is applied to the masonry material. A masonry material constituting the masonry wall is drilled to form a grout material injection hole in the masonry material, and the masonry wall reinforcing material provided with a hollow porous tube main body is connected to the grout from the tip portion of the hollow porous tube main body. And inserting the impact cap into a female screw cut in the inner peripheral surface of the bottomed cylindrical body constituting the composite screw portion provided on the base end side of the hollow porous tube main body and A cap for impact protection is screwed into a male thread cut on the outer peripheral surface of the bottomed cylindrical body, and the impact cap is used as a striking surface while pushing the lining stone filled on the back of the masonry material. A female screw member for connecting the male screw portion projecting concentrically from the bottom of the bottomed cylindrical body and the tip of the grout hose, driving the masonry wall reinforcing material, removing the impact cap from the female screw Are connected to each other through the bottom and A grout material is pressurized and injected into the hollow space of the hollow porous tube main body through a through-hole formed in the male screw portion and a grout hose, and the grout material is surrounded by an ejection hole formed in the hollow porous tube main body. After ejecting, removing the female screw member for connection from the male screw part, and hardening the grout material, the composite screw part is inserted through a pipe insertion hole formed in the head plate Seismic reinforcement of a masonry wall, wherein a head cap is screwed onto a male screw of the bottomed cylindrical body, and the head cap is tightened in a state where the head plate is applied to the masonry material Method.

Images