JP2016008483A - Shear resistance member, auxiliary positioning jig therefor, and installation method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shear resistance member, an auxiliary positioning jig therefor and an installation method therefor that allow simple and low-cost fixing in a small number of processes on a steeply inclined slope surface.SOLUTION: A shear resistance member is installed on a surface of an existing mortar layer 100, and includes a bottom surface part 21 formed as a flat plane, a layer crossing direction part 22 formed in a direction that protrudes toward a surface of an additional mortar layer 100 from the bottom surface part 21, a parallel to layer part 24 connected to the layer crossing direction part 22 and extending in a direction parallel to the surface of the additional mortar layer. The bottom surface part 21 has a nail through-hole 23 of a diameter that at least allows a nail part 52 of a pin nail 50 for concrete to pass through.

Description

  The present invention relates to a shear resistance material, a fixing jig, and an installation method thereof that suppress a deviation between the two when forming an additional mortar layer on an existing mortar layer.

  Sprayed mortar that protects slopes, etc. is aged or deteriorated over time due to exposure to natural environments, such as expansion and contraction due to temperature changes, exposure to wind and rain, ultraviolet rays, flooding, freezing, etc. May cause cracking, or the sprayed mortar layer itself may become brittle. Since there is a possibility that the deteriorated sprayed mortar layer will collapse, repair work is carried out for reinforcement.

  There are various types of repairs to sprayed mortar layers such as slopes, but roughly speaking, the existing sprayed mortar can be repaired by removing the existing sprayed mortar and then repairing it with a new mortar. It is one of the methods of repairing by increasing the thickness with a new spraying mortar without removing the water, and a large amount of waste is generated when the existing spraying mortar is removed.

  On the other hand, in the case of thickening without removing existing sprayed mortar, there are various options on the back side (for example, insertion and injection of anchor bolts after drilling) depending on the situation of the ground surface behind the existing mortar layer. Packers, grouting bolts, etc.) are selectively performed, but at least a new mortar layer is sprayed on the surface side in all cases. In that case, in order to suppress or prevent shearing between the old and new mortar layers, the existing mortar layer is drilled with a large number of holes, and long-axis anchor pins or lock bolts or post-installed anchor bolts, etc. A new mortar layer is sprayed after the head (or tip) is arranged so as to protrude from the old mortar layer.

  When the anchor pin is arranged, for example, a hole (preparation hole) is drilled with a specified diameter and a depth greater than the specified depth at a position to be attached at a rate of one per 2 square meters with a drill drill, a hammer drill, etc. An anchor pin is driven so that the bent head protrudes about 5 cm from the existing mortar layer, and then a new mortar layer is sprayed and coupled to the existing mortar layer via the anchor pin (for example, patent Reference 1).

  When a lock bolt is placed, for example, the lock bolt has a head (threaded part) in a hole (prepared hole) drilled with a specified diameter and a depth greater than the specified depth at a position where it is desired to be installed with a drill drill or the like. It is arranged so as to protrude at the top and embedded with an injection material, and a fixing means such as a nut is attached to the protruding bolt threaded portion, and then a new mortar layer is sprayed to join the existing mortar layer (For example, see Patent Document 2). In some cases, a cup-shaped shear resistance material is passed through the projecting bolt portion through the projecting head to further enhance the coupling, and then fixed by a fixing means such as a nut.

  There are various types of post-installed anchor bolts, but broadly categorized into holes (prepared holes) drilled with a specified diameter and depth more than specified at the position where you want to install them with a drilling machine. Insert an anchor bolt with an adhesive system to fix the anchor part such as a bolt in the anchor bolt by adhering and hardening by chemical reaction, and a metal anchor having an extension part in the hole (preparation hole) Then, it can be classified into metal anchor bolts that are mechanically fixed by opening the expanded portion in the post-construction. A metal anchor bolt is generally composed of a core rod portion and a circular outer peripheral insertion tube portion (sleeve portion). In the outer peripheral insertion tube portion of the metal anchor bolt, slits for expanding the diameter are formed at a plurality of locations on the distal end side, and an extended portion is formed between adjacent slits. The core rod portion is provided with, for example, a tapered portion that is tapered so that the diameter dimension increases toward the lower side (or the upper side).

  When this metal-based post-installed anchor bolt is post-installed, for example, the core rod portion and / or the outer peripheral insertion tube portion (sleeve portion) of the metal anchor bolt is driven using a hammer or a driving rod, Alternatively, the nut corresponding to the bolt portion of the anchor bolt is tightened by turning it with a spanner or the like to a specified torque value. Thereby, the expansion part of the outer periphery insertion tube part (sleeve part) is radially expanded radially outward by the taper part, and bites into the wall surface of the concrete prepared hole to be fixed. This metal-based post-installed anchor bolt has a configuration in which the core rod is driven with a hammer or the anchor is driven to the position where the head of the sleeve sinks a little with a hammer and has a combination of bolt and nut The configuration includes a configuration in which the nut is tightened so that the sleeve portion is opened, and a configuration in which the bolt is tightened.

JP 2005-36579 A (paragraph 0016 and the like) JP2013-36226A (paragraph 0002 etc.)

  However, in general, repairing of a sprayed mortar layer on a slope with a steep inclination angle is performed in a state where an operator is suspended by a rope from above. Therefore, for example, an operator of a conventional repair work of a metal-based post-installed anchor bolt first uses a drill drill or the like in a state where the suspension is unstable, the scaffolding state is bad and the weight cannot be applied. Perform drilling of pilot holes that must be inserted. After that, the operator puts a drill, embeds anchor bolts in the drill, and drives a mandrel or main body with a hammer or a driving rod, and then puts a hammer or driving rod etc. on the head where the anchor bolt protrudes. A shear resistance material is passed through the bolt part, and a nut is also passed, and the nut is tightened with a nut tightener such as a spanner to fix the anchor bolt to the existing mortar layer (and ground). The operator had to repeat the above-described multi-step work while changing various tools, shear resistance materials, and nuts in many places on the slope in an unstable state.

  The present invention has been made in view of the above problems, and uses a small number of commercially available equipment (tools) and commercially available fixtures even when the operator is suspended in a steep slope. An object of the present invention is to provide a shear resistance material capable of fixing the shear resistance material easily and at low cost with a small number of man-hours, an auxiliary jig for positioning it, and an installation method thereof.

  <1> In order to achieve the above object, the shear resistance material of the present invention is a shear resistance material which is installed before forming an additional mortar layer on the surface of an existing mortar layer and suppresses shearing of both layers. A bottom surface portion formed in a planar shape, coupled to the bottom surface portion, coupled to the cross layer direction portion formed in a direction projecting from the bottom surface toward the surface of the additional mortar layer, and the cross layer direction portion. A layer parallel direction portion formed by extending in a direction parallel to the surface of the additional mortar layer, and at least one nail having a diameter dimension through which at least a nail portion of a pin nail for concrete can pass is provided in the bottom surface portion. A hole is provided.

  <2> Preferably, in the shear resistance material of the present invention, a spacer member that separates the surface of the existing mortar layer from the bottom surface portion is coupled to the lower surface of the bottom surface portion.

  <3> Preferably, in the shear resistance material of the present invention, the spacer member is provided around the outer surface of the nail through hole in the bottom surface portion, and the extended nail through hole provided continuously to the nail through hole in the spacer member. It is preferable that a concave portion for the head that accommodates the head portion of the concrete pin nail is provided.

  <4> Preferably, in the shear resistance material of the present invention, the bottom surface and the cross-layer direction portion are integrally formed in a dish shape in which the diameter of the open top surface of the cross-layer direction portion is larger than the diameter of the bottom surface portion. It is good to do so.

  <5> Preferably, in the shear resistance material of the present invention, the bottom surface portion, the layer transverse direction portion, and the layer parallel direction portion are integrally formed from one metal plate by press molding including a punching process. Good.

  <6> Preferably, in the shear resistance material of the present invention, the bottom surface portion and at least the layer transverse direction portion are formed separately, and the bottom surface portion is provided with one or more nail through holes, and the layer transverse direction A second bottom surface part parallel to the bottom surface part is formed at the lower end of the part, and the bottom surface part and the second bottom surface part may be coupled by the coupling means.

  <7> Preferably, in the shear resistance material of the present invention, a spacer member that separates the surfaces is provided between the upper surface of the bottom surface portion and the lower surface of the second bottom surface portion.

  <8> In order to achieve the above object, the positioning auxiliary jig for installing the shear resistance material of the present invention is a muzzle portion of a high-pressure concrete pinnailer for installing any of the shear resistance materials described above. An auxiliary jig to be attached to the front end of the positioning auxiliary jig after the nailer muzzle part is attached, including a nail through hole in the bottom part of the shearing resistance material, and a cross-layer direction part around the nail through hole The top surface of the tip portion is in surface contact with the upper surface of the region surrounded by the outer periphery, and the outer peripheral shape of the tip portion is the same outer peripheral shape as the region surrounded by the cross-layer direction portion and is aligned with the nail through hole And a muzzle through-hole capable of supplying concrete pin nails.

  <9> Preferably, in the positioning auxiliary jig of the present invention, the layer-crossing direction portion around the nail through hole is a dish shape in which the diameter of the open upper surface of the layer-crossing direction portion is larger than the diameter of the bottom surface portion. In some cases, the outer periphery of the tip around the tip of the positioning assist jig may have an outer peripheral shape that can be fitted into the inside of the dish shape.

  <10> Preferably, in the positioning auxiliary jig of the present invention, when the shear resistance material is formed of a metal magnetic material, the metal magnetic material of the shear resistance material is adsorbed on the front surface of the positioning auxiliary jig. It is advisable to arrange a magnet to be used.

  <11> Preferably, in the positioning auxiliary jig of the present invention, the tip of the shear resistance material auxiliary jig is in contact with the magnet or in the vicinity thereof so as to match the outer peripheral shape of the tip and the outer periphery of the tip. A metal plate may be disposed.

  <12> In order to achieve the above object, the positioning auxiliary jig for installing the shear resistance material of the present invention is a muzzle portion of a high-pressure concrete pinnailer for installing any of the above-mentioned shear resistance materials An auxiliary jig to be attached to, and formed to hold the muzzle portion around the nailer muzzle portion, the tip after the nailer muzzle portion attachment includes a nail through hole in the bottom portion of the shear resistance material, A muzzle attachment having a tip surface that can be in surface contact with the upper surface of the region surrounded by the cross-layer portion around the nail through-hole, and a muzzle through-hole that can be supplied with a concrete pin nail in alignment with the nail through-hole And a ring portion formed so as to hold the muzzle attachment portion around the muzzle attachment portion and an outer diameter equivalent to the inner diameter of the coupling means for coupling the second bottom surface portion. A nut hole insertion portion to be inserted into the inner hole of the coupling means and a positioning plate that is coupled to the ring portion and is provided so as to sandwich both ends in the width direction of the layer parallel direction portion. Have.

  <13> In order to achieve the above object, the installation method of the shear resistance material according to the present invention is an installation in which any of the above shear resistance materials is installed on the surface of the existing mortar layer using a high-pressure concrete pinnailer. A method of holding the shear resistance material in the mounting position on the surface of the existing mortar layer, aligning the muzzle of the high-pressure concrete pin nailer with the nail through hole of the shear resistance material, and injecting the concrete pin nail And at least a step.

  According to the shear resistance material of the present invention, its positioning assist jig, and its installation method, even with a steep slope, even if the operator is hung, a small number of commercially available equipment (tools) It is possible to provide a shear resistance material, a positioning aid, and an installation method thereof that can fix the shear resistance material easily and at low cost with a small number of man-hours using a commercially available fixture.

It is a figure which shows schematic structure of the conventional shear resistance material for a comparison with this invention. 1 is a diagram showing a schematic configuration of a shear resistance material according to a first embodiment of the present invention. It is a figure which shows schematic structure of the shear resistance material of 2nd Embodiment of this invention. It is a figure which shows schematic structure of the shear resistance material of 3rd Embodiment of this invention. It is a figure which shows schematic structure of the shear resistance material of 4th Embodiment of this invention.

<Conventional example for comparison>
Before describing the shear resistance material of the first embodiment of the present invention, the conventional shear resistance material shown in FIG. 1 will be described for comparison with the shear resistance material.

  The shear resistance material 10 includes a bottom surface portion 11 having a parallel plane that can come into contact with the existing mortar layer 100, a layer transverse direction portion 12 that is coupled to the periphery of the bottom surface portion 11 and opens in a tubular shape with an open upper end, and a bottom surface The anchor bolt through hole 13 having a diameter provided at the center of the portion 11 and through which the threaded portion 91 of the metal anchor bolt 90 can pass, and the opening upper end of the layer crossing direction portion 12 are coupled in parallel to the bottom surface portion 11. The layer parallel direction part 14 extended | stretched around the circumference | surroundings.

  When the anchor bolt 90 of a couple bolt is embedded in the existing mortar layer 100, for example, in the hole 110 for a couple bolt drilled by a drill for drilling with a diameter larger than the diameter of the anchor bolt 90 of the couple bolt, The anchor bolt 90 is disposed so that the head (bolt threaded portion 91) protrudes upward. In the bolt threaded portion 91 at the tip (head) of the protruding anchor bolt 90, a shear resistance material 10 having a cup shape and having an anchor bolt through hole 13 for allowing the bolt threaded portion 91 to penetrate the bottom surface portion 11 is penetrated. Then, fixing means such as a nut 80 is attached, and the shear resistance material 10 is fixed to the anchor bolt 90. At that time, the core rod portion and / or the outer peripheral insertion tube portion is driven or a nut corresponding to the bolt portion is tightened, and the expansion portion of the outer peripheral insertion tube portion is expanded and fixed to the concrete.

  In this case, the insertion tube 95 has an inner diameter larger than the outer diameter of the bolt threaded portion 91 of the anchor bolt 90 and has an overall length longer than that of the bolt threaded portion 91, and an extension notch at one end. However, it is inserted into the anchor bolt 90 from the bolt threaded portion 91 side with the insertion tube widening portion 96 on the cut side as the head. The anchor bolt 90 in this case is formed so that the diameter dimension increases toward the back side (opposite side of the bolt threaded portion 91). Therefore, the insertion tube widening portion 96 of the insertion tube 95 is formed by a nut 80. The more the bolt threaded portion 91 is tightened, the wider the tip, and the anchor bolt 90 can be firmly fixed.

  Thus, after the shear resistance material 10 is firmly attached to the anchor bolt 90, a new mortar layer is sprayed. Accordingly, the shear resistance material 10 is fastened with the nut 80 to the bolt threaded portion 91 of the anchor bolt 90 which is embedded in the existing mortar layer 100 and the expanded portion of the outer peripheral insertion tube portion is expanded and fixed. The widened portion 96 spreads and is fixed, and the existing mortar layer 100 and the newly sprayed mortar layer are firmly bonded, and shearing at the boundary surface is less likely to occur.

However, as described above, the repair work of the sprayed mortar layer on the slope with a steep inclination angle is performed with the worker suspended from the top with a rope, and the suspension is unstable and the scaffolding state In a state that can not put weight,
(A) Drilling using a drilling machine, placing the drill,
(B) An anchor bolt 90 is embedded in the couple bolt hole 110;
(C) The core rod portion and / or the outer peripheral insertion tube portion is driven using a hammer or a driving rod, or the nut corresponding to the bolt portion is tightened by turning with a spanner or the like, and the expansion portion of the outer peripheral insertion tube portion is expanded. The anchor bolt 90 is fixed to the concrete,
(D) The shear resistance material 10 is passed through the protruding bolt threaded portion 91 of the anchor bolt 90,
(E) Further, the nut 80 is also passed through the bolt threaded portion 91,
(F) Fix the nut tightener by applying it to the nut.
The operator can perform various operations such as (a) to (f) described above while changing various tools, the anchor bolt 90, the shear resistance material 10, and the nut 80 in many places on the slope. It was necessary to repeat in an unstable state.

  The conventional shear resistance material 10 is fitted to an anchor bolt 90 embedded in an existing mortar layer 100 and fixed with a nut 80. The method is a steep angle, and the operator is in a dangling operation. Using a lot of special equipment such as hammers or driving rods, nut clamps (spanners, etc.) and specially manufactured anchor bolts 90 and fixtures such as shear resistance material 10, a great deal of man-hours and high costs Thus, the bolt / nut fixing type shear resistance material 10 is installed on the existing mortar layer 100 by a long and complicated operation.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. 2 (a) and 2 (b).
The shear resistance material 20 is in contact with the existing mortar layer 100 and has a bottom surface portion 21 having a parallel plane, coupled to the periphery of the bottom surface portion 21, and a layer cross-direction direction portion 22 having an open upper end in a tubular shape. The nail through hole 23 having a diameter provided at the center of the portion 21 and through which the nail portion 52 of the concrete pin nail 50 can pass, and the opening upper end of the cross layer direction portion 22 are coupled to the bottom surface portion 21 in the periphery. It is comprised from the extended layer parallel direction part 24. FIG. The main difference from the conventional shear resistance material 10 is that, instead of the anchor bolt through hole 113, a nail through hole 23 slightly larger than the diameter of the concrete pin nail 50 is provided.

  The concrete pin nail 50 has a head portion 51 having a large diameter on the stopper side, and a nail portion 52 that pierces the existing mortar layer 100 with a sharp tip. The concrete pin nail 50 has, for example, a total length of 30 mm to 100 mm, a body diameter of 2 mm to 5 mm, a head diameter of 6 mm to 10 mm, a body shape of smooth, and a tip shape of diamond point. The concrete pin nail 50 is injected from the high-pressure concrete pin nailer 200 connected to the high-pressure air compressor 300.

  A positioning auxiliary jig 60 is attached to the muzzle 201 of the high-pressure concrete pinnailer 200. The positioning auxiliary jig 60 is formed so that the inner diameter of the muzzle part through hole 62 centered is equal to the outer diameter of the muzzle 201 of the high-pressure concrete pin nailer 200. The outer diameter (jig tip diameter D1) of the positioning auxiliary jig 60 is formed to be equal to the inner diameter (shear resistance material bottom surface upper side inner diameter D2) of the bottom surface 21 of the shear resistance material 20. Accordingly, only by pressing the muzzle 201 with the positioning auxiliary jig 60 attached to the upper surface (inner surface) of the bottom surface portion 21 of the shear resistance material 20, the nail through hole 23 provided at the center of the bottom surface portion 21 is pressed. The muzzle 201 can be aligned.

  In a state where the muzzle 201 to which the positioning auxiliary jig 60 is mounted is pressed against the upper surface (inner side surface) of the bottom surface portion 21 of the shear resistance material 20, the trigger of the high-pressure concrete pinnailer 200 is pulled to make the concrete pin nail 50 When injected, the concrete pin nail 50 passes through the aligned nail through hole 23 and pierces the existing mortar layer 100 to form a nail hole 120. In this state, the shear resistance material 20 is fixed to the existing mortar layer 100.

  As described above, according to the present embodiment, the shear resistance material 20 can be installed before the additional mortar layer is formed on the surface of the existing mortar layer 100 to suppress shearing of both layers. Further, the shear resistance material 20 is formed in a planar shape with a bottom surface portion 21 and a cross-layer direction portion formed in a direction coupled to the bottom surface portion 21 and projecting from the bottom surface portion 21 toward the surface of the additional mortar layer. 22 and a layer parallel direction portion 24 formed by extending in a direction parallel to the surface of the additional mortar layer, which is coupled to the layer cross direction portion 22. The bottom surface portion 21 is provided with a nail through hole 23 having a diameter dimension through which at least the nail portion 52 of the concrete pin nail 50 can pass.

  Therefore, according to the shear resistance material 20 of this embodiment, the nail portion 52 of the concrete pin nail 50 is provided on the bottom surface portion 21 of the shear resistance material 20 having the bottom surface portion 21, the layer crossing direction portion 22, and the layer parallel direction portion 24. Since one nail through hole 23 having a diameter that can pass is provided, when the shear resistance material 20 is installed on the existing mortar layer 100, a commercially available concrete pin nail 50 is formed on the bottom surface portion 21 of the shear resistance material 20. The shear resistance material 20 can be installed on the existing mortar layer 100 by a simple operation by simply driving with a commercially available high-pressure concrete pinnailer. Therefore, in the shear resistance material 20 of the present embodiment, a small number of commercially available equipment (only high-pressure concrete pinnailers) and commercially available fixtures (concrete) are used even when the operator is hungry at a steep slope. By using the pin nail 50), it is possible to provide a shear resistance material capable of fixing the shear resistance material easily and at low cost with a small number of man-hours.

  In the present embodiment, in the shear resistance material 20, the bottom surface portion 21 and the layer crossing direction portion 22 are integrally formed in a dish shape in which the diameter of the open top surface of the layer crossing direction portion 22 is larger than the diameter of the bottom surface portion 21. Has been. According to the shear resistance material 20 of this embodiment, since the bottom surface portion 21 and the layer crossing direction portion 22 are integrally formed in a dish shape, the manufacture of the shear resistance material 20 is facilitated, in addition to the shear resistance, Pull-out resistance can also be obtained.

  In the present embodiment, in the shear resistance material 20, the bottom surface portion 21, the layer crossing direction portion 22, and the layer parallel direction portion 24 are integrally formed by press molding including a punching process from one metal plate. According to the shear resistance material 20 of the present embodiment, the shear resistance material 30 including the bottom surface portion 21, the layer crossing direction portion 22 and the layer parallel direction portion 24 is formed by press forming including a punching process from one metal plate. Since it can manufacture, manufacture of the shear resistance material 30 can be made easy.

  The positioning auxiliary jig 60 for installing the shear resistance material 20 of the present embodiment is a positioning auxiliary jig attached to the muzzle portion 201 of the high-pressure concrete pinnailer 200 in order to install the shear resistance material 20, The tip 61 of the positioning auxiliary jig 60 after the attachment of the nailer muzzle 201 includes the nail through hole 23 of the bottom surface portion 21 of the shear resistance material 20 and is surrounded by the layer crossing direction portion 22 around the nail through hole 23. A region (bottom surface of the shear resistance material of the bottom surface portion 21) having a tip portion surface that can come into surface contact with the upper surface of the region (bottom surface portion 21), It has the same outer peripheral shape (jig tip diameter D1) as the upper part inner diameter D2), and has a muzzle part through hole 62 that can be supplied to the concrete pin nail 50 in alignment with the nail through hole 23.

  According to the positioning auxiliary jig 60 for installing the shear resistance material 20 of the present embodiment, the tip shape of the positioning auxiliary jig 60 is formed on the upper surface side of the bottom surface portion 21 of the shear resistance material 20 with a nail through hole. 23, the shape of the region surrounded by the surrounding layer crossing direction portion 22 is the same as that of the surrounding portion, so that it is possible to easily align the muzzle portion 201 of the high-pressure concrete pinnailer 200 with the nail through hole 23. .

  The positioning auxiliary jig 60 for installing the shear resistance material 20 of the present embodiment has a metal magnetic material on the tip side surface of the positioning auxiliary jig 60 when the shear resistance material 20 is formed of a metal magnetic material. A magnet 65 that adsorbs the material is disposed. According to the positioning auxiliary jig 60, the shear resistance material 20 is a metal magnetic material, and the magnet 65 is disposed at the tip of the positioning auxiliary jig 60 to adsorb the shear resistance material 20, and further, high-pressure concrete. It is possible to easily align the muzzle portion 201 of the pinnail 200 with the nail through hole 23.

  The installation method of the shear resistance material 20 of the present embodiment is an installation method in which the shear resistance material 20 is installed on the surface of the existing mortar layer 100 using the high-pressure concrete pinnailer 200, and the shear resistance material 20 is installed. At least a step of holding the mounting position on the surface of the mortar layer 100 and a step of aligning the muzzle 201 of the high-pressure concrete pin nailer 200 with the nail through hole 23 of the shear resistance material 20 and injecting the pin nail 50 for concrete are included. .

  According to the installation method of the shear resistance material 20 of the present embodiment, the shear resistance material 20 can be installed simply by driving a concrete pin nail with the high-pressure concrete pinnailer 200. Therefore, in the installation method of the shear resistance material 20, Even if the operator is working at a steep angle, the number of man-hours can be reduced by using a small number of commercially available equipment (high-pressure concrete pinnailer 200 only) and a commercially available fixture (pinnails for concrete 50). Thus, it is possible to provide a shear resistance material installation method that can fix the shear resistance material easily and at low cost.

Second Embodiment
Hereinafter, a second embodiment of the present invention will be described in detail with reference to FIGS. 3 (a) and 3 (b).
The shear resistance material 30 includes a bottom surface portion 31, a layer crossing direction portion 32, a layer parallel direction portion 34, and a nail through hole 33 similar to those in the first embodiment, but the outer shape is a nut 80 on the lower surface side of the nail through hole 33. The spacer member 35 having the same shape as that is welded and joined. As long as the joining method can be surely joined, welding may be used.

  In addition, in the vicinity of the nail through hole 33 of the bottom surface portion 31 of the shear resistance material 30, in order to bond the concrete pin nail 50 to the shear resistance material 30 with an increased adhesion range, the head portion 51 of the concrete pin nail 50. The head nail through-hole 37 is formed from the lower side thereof.

  In the shear resistance material 30 of the present embodiment, a spacer member 35 that separates the surface of the existing mortar layer 100 from the bottom surface portion 31 is coupled to the bottom surface of the bottom surface portion 31. According to this shear resistance material 30, since the spacer member 35 is provided on the lower surface of the bottom surface portion 31 of the shear resistance material 30 and is fixed by the concrete pin nail 50, the layer transverse direction portion 32 is directed to the surface of the additional mortar layer. The same effect as extending in the protruding direction can be obtained. Therefore, the shear resistance value of the shear resistance material 30 can be improved, and it is possible to easily cope with the case where the additional mortar layer is formed thick.

  In the shear resistance material 30 of the present embodiment, the spacer member 35 is provided around the outer surface of the nail through hole 33 of the bottom surface portion 31, and the extended nail through hole provided continuously to the nail through hole 33 inside the spacer member 35. 37 and a recess 36 for the head that accommodates the head 51 of the concrete pin nail 50 is provided. According to the shear resistance material 30, the extended nail through hole 37 and the head recess 36 are provided inside the spacer member 35 coupled to the bottom surface portion 31 of the shear resistance material 30, and thus the shear resistance material 30 by the concrete pin nail 50. Can be more firmly fixed.

  In the positioning auxiliary jig 70 of the present embodiment, the layer-crossing direction portion 32 around the nail through-hole 33 has a dish shape in which the diameter of the open upper surface of the layer-crossing direction portion 32 is larger than the diameter of the bottom surface portion 31. Therefore, the outer peripheral portion 73 at the periphery of the distal end portion 71 of the positioning auxiliary jig 70 has an outer peripheral shape that can be fitted into the dish-shaped inside of the layer crossing direction portion 32. According to the positioning auxiliary jig 70, the tip shape of the positioning auxiliary jig 70 is not only the upper surface side of the bottom surface portion 31 of the shear resistance material 30 but also the dish of the layer crossing direction portion 32 around the nail through hole 33. Since the outer peripheral shape is adapted so as to be fitted to the inside of the shape, it is possible to easily align the muzzle portion 201 of the high-pressure concrete pin nailer 200 with the nail through hole 33.

  In the positioning auxiliary jig 70 of the present embodiment, a magnet 75 similar to that of the second embodiment is provided at the tip 71 of the positioning auxiliary jig 70 of the shear resistance material 30, and the magnet 75 is in contact with or near the magnet 75. In addition, a magnetically conductive metal plate 74 is disposed so as to match the outer peripheral shape of the tip 71 and the tip outer periphery 73. According to the positioning auxiliary jig 70, since the magnetic conductive metal plate 74 is disposed around the magnet 75 at the tip of the positioning auxiliary jig 70, the shear resistance material 30 can be adsorbed more strongly, and more. Furthermore, it is possible to easily align the muzzle portion 201 of the high-pressure concrete pinnailer 200 with the nail through hole 33. Other configurations and operations / effects of the shear resistance member 30 and the positioning assist jig 70 are the same as those in the first embodiment.

<Third Embodiment>
Hereinafter, a third embodiment of the present invention will be described in detail with reference to FIGS. 4 (a) and 4 (b).
The shear resistance material 40 is composed of two pieces, that is, a base portion 49 and a separate conventional shear resistance material 10. The base portion 49 is in contact with the existing mortar layer 100 and has a bottom surface portion 41 having a parallel plane, a layer transverse direction portion 42 coupled to the periphery of the bottom surface portion 41 and having an upper end opened, And two nail through holes 43 having a diameter provided on the shaft and through which the nail portion 52 of the concrete pin nail 50 can pass. The difference from the other embodiments is that the shear resistance material 40 is composed of two pieces of the base portion 49 and the conventional shear resistance material 10, and the base portion 49 has two nail through holes 43. The nut 81 is welded at the center, and the nut 81 also functions as a spacer, but the conventional shear resistance material 10 can be fixed by the bolt 85. Other configurations and effects are the same as those of the first embodiment.

  In the shear resistance material 40 of the present embodiment, the base portion 49 and the layer crossing direction portion 12 (a part of the conventional shear resistance material 10) are formed separately, and the bottom surface portion 41 of the base portion 49 includes Two nail through holes 43 are provided, and a second bottom surface portion 11 parallel to the bottom surface portion 41 is formed at the lower end portion of the layer crossing direction portion 12, and the bottom surface portion 41 and the second bottom surface portion 11 are coupled to each other. (Nut 81 and bolt 85). According to this shear resistance material 40, a nail through hole 43 is provided in the bottom surface portion 41 of a separate base portion 49, and is fixed on the existing mortar layer 100 with a concrete pin nail 50, and one bond is formed on the top surface of the bottom surface portion 41. A nut 81 as means is coupled by welding or the like. As the nut 81, a conventional shear resistance material 10 (including the layer crossing direction portion 12) of the type that is fixed to the bolt threaded portion 91 of the existing anchor bolt 90 with a nut, and a bolt 85 that is the other coupling means are used. Can be combined. This provides a shear resistance material capable of fixing the shear resistance material easily and at low cost with a small number of man-hours using a commercially available fixture (concrete pin nail 50) while effectively utilizing the conventional shear resistance material 10. be able to.

  In the shear resistance material 40 of the present embodiment, a nut 81 (spacer member) that separates each surface is provided between the upper surface of the bottom surface portion 41 of the base portion 49 and the lower surface of the second bottom surface portion 11. According to the shear resistance member 40, the nut 81, which is one of the coupling means coupled to the upper surface of the bottom surface portion 41, also functions as a spacer member and is fixed by the concrete pin nail 50. Similar to the embodiment, in addition to extending the layer crossing direction portion 12 in a direction protruding toward the surface of the additional mortar layer, it is possible to obtain an effect of further protruding by the protruding portion of the nut 81 (spacer member). . Therefore, the shear resistance value of the shear resistance material 40 can be improved, and it is possible to easily cope with the case where the additional mortar layer is formed thick. Other configurations and actions / effects of the shear resistance material 40 are the same as those in the first embodiment.

<Fourth embodiment>
Hereinafter, a fourth embodiment of the present invention will be described in detail with reference to FIGS. 5 (a) and 5 (b).
The shear resistance material 140 is composed of two pieces, that is, a base portion 149 and a separate conventional shear resistance material 10. The base portion 149 has two bottom surface portions 141 having parallel planes that can be in contact with the existing mortar layer 100 at both ends in the long side direction, and sandwiched between the both bottom surface portions 141 from both the bottom surface portions 141 by bending or pressing. It is formed so as to connect the projecting upper ends of the layer crossing direction parts 142 and the layer crossing direction parts 142 of the respective layers in the crossing direction 142. A layer parallel direction portion 144 having an opening 145 through which the male threaded portion of the bolt 85 can pass, and the layer transverse direction portion 142 and the layer parallel direction portion 144 are accommodated in a lower space surrounding both sides and the upper surface. The pin 81 for the concrete is provided on the central axis of the long side of the bottom 81 and the nut 81 fixed to any one of the three sides surrounded by one or more of the peripheral portions by welding or the like. Nail portion 52 has a, two nail holes 143 of the passable diameter. This embodiment is different from the above-described third embodiment in that the base part 149 has a simple rectangular outer diameter and is easy to perform die cutting and bending or pressing, thereby saving labor and energy. This is advantageous in terms of materialization and cost saving. Since the nut 81 can be disposed between the layer crossing direction parts 142, the layer crossing direction part 142 can be used for fixing the nut 81 and positioning in the long side direction. It becomes easy, and it is a point which can raise fixed strength rather than the case of only welding by being pinched. Other configurations and effects are the same as those of the third embodiment.

  In the shear resistance material 140 of the present embodiment, the base portion 149 and the layer crossing direction portion 12 (part of the conventional shear resistance material 10) are formed separately, and each bottom surface portion 141 of the base portion 149 has Two nail through-holes 143 are provided, and a second bottom surface portion 11 parallel to the bottom surface portion 141 is formed at the lower end portion of the layer crossing direction portion 12, and the bottom surface portion 141 and the second bottom surface portion 11 are coupled. By means (nut 81 and bolt 85), the layer parallel direction part 144 having the opening part 145 is sandwiched and joined. According to this shear resistance material 140, a nail through hole 143 is provided in the bottom surface portion 141 of a separate base portion 149 and fixed on the existing mortar layer 100 with the concrete pin nail 50, and each layer transverse direction portion 142 of the base portion 149. The nut 81, which is one coupling means, is coupled by welding or the like under the layer parallel direction portion 144 having the opening 145. A conventional shear resistance material 10 is coupled to the nut 81 using a bolt 85 which is the other coupling means with the second bottom surface portion 11 and the layer parallel direction portion 144 having the opening 145 interposed therebetween. Can do. Thereby, while effectively utilizing the conventional shear resistance material 10, a shear resistance material that can fix the shear resistance material more easily and at low cost with fewer man-hours using a commercially available fixture (concrete pin nail 50). Can be provided.

  In the shear resistance material 140 of the present embodiment, the existing mortar layer 100 and the second bottom surface portion 11 are separated from each other while the respective layer transverse direction portions 142 are projected on the lower surface of the layer parallel direction portion 144 of the base portion 149. It has a nut 81 (spacer member). According to the shear resistance material 140, the nut 81, which is one of the coupling means coupled to the lower surface of the layer parallel direction portion 144, also functions as a spacer member and is fixed by the concrete pin nail 50. In the same manner as in the embodiment, in addition to extending the layer crossing direction portion 12 in the direction protruding toward the surface of the additional mortar layer, the effect of further protruding by the protruding portion of the nut 81 (spacer member) is obtained. Can do. Therefore, the shear resistance value of the shear resistance material 140 can be improved, and it is possible to easily cope with the case where the additional mortar layer is formed thick. Other configurations and actions / effects of the shear resistance material 140 are the same as those in the third embodiment.

  The muzzle mounting portion 160 of the positioning auxiliary jig 190 is attached to the muzzle 201 of the high-pressure concrete pinnailer 200 shown in FIG. The muzzle attachment portion 160 is formed so that the centered inner diameter of the muzzle portion through hole 162 is equal to the outer diameter of the muzzle 201 of the high-pressure concrete pin nailer 200. The outer diameter of the muzzle mounting portion 160 is arbitrary, but is formed to be the same as the inner diameter of the ring portion 170 to be combined. The ring portion 170 has a cylindrical nut hole insertion portion 171 having an outer diameter size equal to the inner diameter size of the hole of the nut 81, and a positioning plate 172 that sandwiches both lateral ends of the layer parallel direction portion 144 of the base portion 149, and 173 are combined. By providing the positioning plates 172 and 173, the rotation of the positioning auxiliary jig 190 that rotates only by positioning the cylindrical nut hole insertion portion 171 is suppressed, and the muzzle 201 is inserted into the nail through hole 143. Can be aligned. Accordingly, the cylindrical nut hole insertion portion 171 is inserted into the hole of the nut 81 through the opening 145 of the layer parallel direction portion 144, and both ends in the width direction of the layer parallel direction portion 144 are positioned by the positioning plates 172 and 173. The muzzle 201 with the muzzle mounting portion 160 attached thereto is pressed against the upper surface (inner side surface) of the bottom surface portion 141 so that the muzzle 201 is aligned with the nail through hole 143 provided at the center of the bottom surface portion 141. be able to.

  The above-described nut hole insertion portion 171 is inserted into the nut inner hole 82 of the nut 81 and pushed in a state where both ends in the width direction of the layer parallel direction portion 144 are sandwiched between the positioning plates 172 and 173, so In a state where the muzzle 201 to which is attached is positioned and pressed into the nail through hole 143 on the upper surface (inner surface) of the bottom surface portion 141 of the base portion 149, the trigger of the high-pressure concrete pinnailer 200 is pulled to pin the concrete pin nail When 50 is injected, the concrete pin nail 50 passes through the aligned nail through hole 143 and is pierced into the existing mortar layer 100 to form a nail hole 120. In this state, the base portion 149 of the shear resistance material 140 is fixed to the existing mortar layer 100.

  The muzzle attachment portion 160 of the positioning auxiliary jig 190 for installing the base portion 149 of the shear resistance material 140 of the present embodiment is a position to be attached to the muzzle portion 201 of the high-pressure concrete pinnailer 200 in order to install the base portion 149. The tip part 161 of the auxiliary attachment jig after the attachment of the nailer muzzle part 201 in the muzzle attachment part 160 includes the nail through hole 143 in the bottom surface part 141 of the base part 149, and around the nail through hole 143. It has a tip surface that can come into surface contact with the upper surface of the region (bottom surface portion 141), and the nut hole insertion portion 171 and the positioning plates 172 and 173 are aligned with the opening portion 145 of the layer parallel direction portion 144 and both ends in the width direction. The muzzle portion through-hole 162 that can be supplied to the concrete pin nail 50 in alignment with the nail through-hole 143 by simply pushing in To.

  According to the ring portion 170 of the positioning auxiliary jig 190 for installing the base portion 149 of the present embodiment, the nut hole insertion portion 171 and the positioning plates 172 and 173 are coupled to the ring portion 170. It is possible to easily align the muzzle portion 201 of the high-pressure concrete pin nailer 200 with the nail through hole 143.

  The shear resistance material of the present invention, its positioning aid, and its installation method are not limited to the above-described embodiments, and a new mortar layer is formed on the surface of the existing mortar layer by a spraying method or the like. Regarding the shear resistance material used in the case, it has a cross layer direction portion, a layer parallel direction portion and a bottom surface portion with respect to the new mortar layer, and is provided with a nail through hole for a concrete pin nail on the bottom surface portion. You may have a shape. In addition, the shear resistance material may not be integrated from a single metal plate by punching press or the like, but may be a shear resistance material integrated by joining two or more pieces using welding or riveting. It is also possible to use a shear resistance material that joins two or more pieces using screws so that they can be integrated together.

  Further, the positioning jig for the shear resistance material of the present invention is not limited to the type provided in the entire circumferential direction of the muzzle portion as in the above-described embodiments, and the shear resistance material of the present invention is installed. In doing so, the muzzle portion of the high-pressure concrete pin nailer can be easily positioned in the nail through hole of the shear resistance material. More specifically, the positioning auxiliary jig of the present invention is formed so that the distance and direction of the nail through hole with respect to the cross-layer direction portion of the shear resistance material can be derived from at least three points in the cross-layer direction portion. That's fine.

  Moreover, about the installation method of the shear resistance material of this invention, the shear resistance material integrated like each above-mentioned embodiment is contacted with the pin nail for concrete, or the existing mortar layer of 2 pieces. It is not limited to the method of fixing the side piece to the existing mortar layer with two concrete pin nails, but at least the bottom part of the shear resistance material is a commercially available air compressor, concrete pinnails and at least one concrete pin nail A shear resistance material that can be easily guided to the nail through-hole of the shear resistance material by simply pressing the nailer's muzzle against the bottom surface of the shear resistance material is required. Accordingly, a positioning assist jig may be used.

  As described above, according to the shear resistance material of the present invention, its positioning assist jig, and its installation method, a small number of commercially available equipment can be used even when the operator is working in a steep angle. It is possible to provide a shear resistance material that can be fixed easily and at a low cost with a (tool) and a commercially available fixture, a positioning auxiliary jig, and an installation method thereof. Become.

10, 20, 30, 40, 140 shear resistance material,
11, 21, 31, 41, 141 bottom portion,
12, 22, 32, 42, 142 cross-layer direction part,
13 Anchor bolt through hole,
14, 24, 34, 144 layer parallel direction part,
23, 33, 143 Nail through hole,
35, 81 spacer member,
36 Head recess,
37 Stretched nail through hole,
49, 149 base part,
50 Concrete pin nails,
51 head,
52 Nail part,
60, 70, 190 Positioning auxiliary jig,
61, 71, 161 Tip side surface,
62, 72, 162 Muzzle through hole,
65, 75 magnets,
73 The outer periphery of the tip,
74 Conductive metal plate,
80, 81 nuts,
82 nut bore,
85 volts,
90 anchor bolt (couple bolt)
91 Bolt thread cutting part,
95 Perimeter insertion tube (sleeve),
96 Insertion tube widening section,
100 Existing mortar layer,
110 Couple bolt hole,
120 nail hole,
145 opening,
160 muzzle attachment,
170 ring part,
171 Nut hole insertion part,
172, 173 Positioning plate,
200 high pressure concrete pinnaira,
201 muzzle,
300 high pressure air compressor,
D1 Jig tip diameter,
D2 inner diameter on the bottom side of the shear resistance material,
D11 jig tip outer periphery upper end diameter,
D21 Upper inner diameter in the transverse direction of the shear resistance material layer.

Claims (13)

A shear resistance material that is installed before forming the additional mortar layer on the surface of the existing mortar layer and suppresses shearing of both layers,
A bottom surface formed in a planar shape;
A cross-layer direction portion formed in a direction coupled to the bottom surface portion and projecting from the bottom surface portion toward the surface of the additional mortar layer,
A layer parallel direction portion formed by being combined with the cross layer direction portion and extending in a direction parallel to the surface of the additional mortar layer;
Consists of
One or more nail through-holes having a diameter dimension through which at least a nail part of a concrete pin nail can pass are provided in the bottom surface part. The shear resistance material according to claim 1, wherein a spacer member that separates the surface of the existing mortar layer and the bottom surface portion is coupled to the bottom surface of the bottom surface portion. The spacer member is provided around the outer surface of the nail through hole in the bottom surface portion, and an extended nail through hole provided continuously to the nail through hole in the spacer member and a head portion of the concrete pin nail are provided. The shearing resistance material according to claim 2, further comprising: a concave portion for a head to be accommodated. The bottom surface portion and the cross-layer direction portion are integrally formed in a dish shape in which the diameter of the open top surface of the cross-layer direction portion is larger than the diameter of the bottom surface portion. 4. The shear resistance material according to any one of 3 above. The bottom surface part, the layer crossing direction part, and the layer parallel direction part are integrally formed by press forming including a punching process from a single metal plate. The shear resistance material according to item. The bottom surface portion and at least the cross-layer direction portion are formed separately,
The bottom portion is provided with one or more nail through holes,
A second bottom surface parallel to the bottom surface is formed at the lower end of the cross-layer direction portion,
The shear resistance material according to claim 1, wherein the bottom surface portion and the second bottom surface portion are coupled by a coupling means. The shear resistance material according to claim 6, further comprising a spacer member that separates the respective surfaces between the upper surface of the bottom surface portion and the lower surface of the second bottom surface portion. A positioning auxiliary jig attached to a muzzle portion of a high-pressure concrete pinnailer for injecting the concrete pin nails for installing the shear resistance material according to any one of claims 1 to 7,
The tip after attaching the Naira muzzle in the positioning assist jig is
Including the nail through hole in the bottom surface portion of the shear resistance material, and having a tip surface that can be in surface contact with the upper surface of a region surrounded by the cross-layer direction portion around the nail through hole;
The outer peripheral shape of the tip is the same outer peripheral shape as the region surrounded by the cross-layer direction part,
A positioning auxiliary jig comprising a muzzle portion through hole capable of supplying the concrete pin nail in alignment with the nail through hole. When the layer transverse direction part around the nail through-hole is a dish shape in which the diameter of the open upper surface of the layer transverse direction part is larger than the diameter of the bottom face part,
The positioning auxiliary jig according to claim 8, wherein an outer peripheral portion of the tip around the tip of the positioning auxiliary jig has an outer peripheral shape that can be fitted into the inside of the dish shape. When the shear resistance material is formed of a metal magnetic material,
The positioning auxiliary jig according to claim 8 or 9, wherein a magnet that adsorbs the metal magnetic material of the shear resistance material is disposed on a front end side surface of the positioning auxiliary jig. 11. A magnetically conductive metal plate is disposed at a tip portion of the positioning auxiliary jig so as to be in contact with or in the vicinity of the magnet so as to match the outer peripheral shape of the tip portion and the tip outer peripheral portion. The positioning auxiliary jig described in 1. A positioning auxiliary jig attached to a muzzle portion of a high-pressure concrete pinnailer for injecting the concrete pin nails for installing the shear resistance material according to claim 6 or 7,
The nail through hole is formed so as to hold the muzzle part around the nailer muzzle part, and the tip part after the nailer muzzle part is attached includes the nail through hole in the bottom part of the shear resistance material. A muzzle having a tip end surface capable of being in surface contact with an upper surface of a region surrounded by the cross-layer direction portion around the periphery, and a muzzle through hole capable of supplying the concrete pin nail in alignment with the nail through hole Mounting part,
Around the muzzle attachment portion, a ring portion formed to hold the muzzle attachment portion,
A nut hole insertion portion that is coupled to the ring portion and has an outer dimension equivalent to the inner diameter of the coupling means for coupling the second bottom surface portion, and is inserted into the inner hole of the coupling means;
A positioning plate that is coupled to the ring portion and is provided so as to sandwich both ends in the width direction of the layer parallel direction portion,
A positioning auxiliary jig characterized by comprising: An installation method for installing the shear resistance material according to any one of claims 1 to 7 using a high-pressure concrete pinnailer that injects the concrete pin nails onto the surface of an existing mortar layer,
Holding the shear resistance material in a mounting position on the surface of the existing mortar layer;
An installation method comprising: aligning a muzzle of the high-pressure concrete pinnailer with the nail through hole of the shear resistance material and injecting the concrete pinnail.

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