JP5988922B2 - Anchor pin with inlet, pinning method and net barrier method using the same - Google Patents

Description

  The present invention relates to an anchor pin with an inlet used for repairing a wall body such as an outer wall or an inner wall in which so-called “floating” occurs, a pinning method using the same, and a net barrier method.

Conventionally, in this type of pinning method (anchor pinning method with an injection port), a hole is inserted into a hole (repair hole) that penetrates a finishing material (including mortar) such as a tile and drills a concrete frame to a predetermined depth. The anchor pin with the inlet is driven and the adhesive is injected from the inlet of the anchor pin with the inlet (see Patent Document 1).
The anchor pin with an inlet is composed of a cylindrical anchor main body and an expansion cone (expansion plug) that pushes an expanded portion of the anchor main body. The anchor main body is composed of an expanded portion into which the expansion cone is driven, a trunk portion that is continuous with the expansion cone, and a flange portion that is continuous with the barrel portion and presses the finishing material. A plurality of split slits are formed in the widened portion, and a plurality of openings (lateral holes) for guiding the adhesive to the hole wall side of the insertion hole are formed in the body portion. Moreover, a counterbored hole (opening recess) in which the flange is seated is formed in the tile in which the opening of the insertion hole is formed.

  After inserting the anchor pin with injection port into the insertion hole so that the flange is seated in the counterbore hole, the expansion cone (expansion plug) is driven in to expand the expansion part and fix it at the back of the insertion hole To do. Subsequently, an adhesive is injected from the injection port. The injected adhesive is filled in the anchor body, and then supplied from the plurality of split slits and the plurality of openings to the insertion hole and the gap (floating) communicating with the insertion hole. In this way, the anchor pin with the injection port that presses the finishing material by the flange portion is anchored physically and chemically into the insertion hole, and the wall body is repaired.

JP 2000-34839 A

In such a conventional anchor pin with an injection port, the expansion cone is driven by a driving tool inserted from the injection port, but when the expansion cone is driven, the friction between the expansion cone and the inner peripheral surface of the expanded portion As a result, a driving impact is also applied to the anchor body. By the way, in order to prevent the flange portion from floating in the counterbored hole and considering the reduction of the drilling tool (the reduction of the bit), it is between the tip of the inserted anchor pin with the inlet and the bottom of the insertion hole. A clearance of about 3 to 10 mm is provided. For this reason, when the expansion cone is driven, the anchor main body is also driven indirectly, and a driving impact is applied to the periphery of the insertion hole via the flange portion.
Therefore, there has been a problem that due to this driving impact, the tile is cracked around the counterbore hole (in the case of mortar finish, the mortar is cracked), resulting in poor construction. In addition, when the mortar is thin (for example, a concrete direct tension method), the mortar may be destroyed due to impact, or the “float” closes and the adhesive cannot be injected into the “float”. There was a problem.

  It is an object of the present invention to provide an anchor pin with an injection port that does not close a finish material and prevent “floating” from closing when an expansion cone is driven, and a pinning method and a net barrier method using the same.

The anchor pin with an inlet according to the present invention is an anchor pin with an inlet that is anchored to an insertion hole that penetrates a finishing material and is drilled in a concrete frame, and has an expanded portion on the tip side, and is inserted. The expansion portion includes a cylindrical anchor anchored in the hole, an expansion cone that is driven into the cylindrical anchor and pushes the expansion portion, and an expansion collar attached to the inner peripheral surface of the expansion portion. Is characterized in that it is spread through an extended collar that has been pushed out by a driven expansion cone.

According to this configuration, the expansion collar hits the bottom of the insertion hole due to friction between the expansion cone and the expansion collar at the initial stage of driving the expansion cone. Further, when the expansion cone is driven, the expansion cone bites into the expansion collar, and at the same time, the expansion portion is expanded by receiving the expansion force from the expansion collar. The expanded portion that has been expanded is pressed against the inner peripheral surface of the insertion hole to be anchored.
Thus, when the expanding portion is expanded, the expansion collar is in contact with the bottom of the insertion hole, so that the cylindrical anchor does not advance even if the expansion cone is driven. That is, when the expansion cone is driven, the driving impact is absorbed by the bottom of the insertion hole through the expansion collar, and thus does not act on the cylindrical anchor. Therefore, the finishing material is not damaged or the “floating” generated in the finishing material is not closed. Moreover, since the expansion part is expanded by receiving an expansion force on the base side which is difficult to expand due to the expansion collar, the entire expansion part is pressed against the insertion hole to exhibit a gripping force. Accordingly, the pulling strength can be increased.

  In this case, it is preferable that the distal end portion of the expansion collar protrudes from the distal end of the cylindrical anchor.

  According to this configuration, the expansion collar can be abutted against the hole bottom of the insertion hole at the stage where the anchor pin with the injection port is loaded into the insertion hole, that is, before the operation of driving the expansion cone is started. . Therefore, even if the depth accuracy of the drilled insertion hole is low, the anchor pin with an injection port can be anchored appropriately.

  The expansion collar preferably has a plurality of slit portions cut from the expansion cone side.

  According to this structure, each part by the side of the expansion cone in the expansion collar divided by the plurality of slit parts can be radially expanded. Therefore, the expansion part expanded by an expansion collar can be expanded appropriately, and anchoring can be stabilized.

  Furthermore, it is preferable that the extended collar is formed in a dimension longer than the expanded portion in the axial direction.

  According to this configuration, the expanded portion can be appropriately expanded through the expanded collar that is in contact with the insertion hole, and anchoring can be stabilized.

  The pinning method of the present invention is a pinning method for repairing a wall body composed of a finishing material and a concrete frame using the above-described anchor pin with an injection port, and penetrates the finishing material to a repaired portion of the wall body. A drilling step for drilling the insertion hole in the concrete frame, an insertion step for inserting the anchor pin with an injection port into the drilled insertion hole, and an anchor for driving an expansion cone of the anchor pin with the injection port inserted A ring step and an adhesive injection step of injecting an adhesive into the insertion hole through an anchor pin with an injection port are provided.

  According to this configuration, when the extension cone is driven in the anchoring process, the finish material is not damaged by the action of the extension collar, or the “float” generated in the finish material is not closed. Therefore, breakage of the finishing material can be prevented, and the adhesive can be reliably injected into the “float” generated in the finishing material.

  In this case, it is preferable to further include a diameter expansion step of forming a diameter expansion portion at the bottom of the insertion hole between the drilling step and the insertion step.

  According to this configuration, the expanded portion that is expanded is pressed against the inner peripheral wall of the expanded portion. That is, the anchor pin with the injection port is anchored to the enlarged diameter portion. Therefore, the pullout strength of the anchor pin with an inlet can be remarkably increased.

  The net barrier method of the present invention is a net barrier method for repairing a wall body made of a decorative material, a tensioning material and a concrete frame using the above-described anchor pin with an injection port, and the decoration material and the tensioning are applied to the wall body. A drilling process for drilling a plurality of insertion holes in the concrete frame through the material, a conditioning agent coating process for applying a ground conditioning agent to the surface of the wall, and a net sticking agent on the ground conditioning agent A net tensioning process for attaching the net, an anchor pin with an injection port for each insertion hole, and an adhesive injection from the injection port, and a net fixing process for holding the net, and an adhesive material on the net And a decoration material tensioning process for newly decorating the decoration material.

  According to this configuration, not only can the net be pressed by the anchor pin with the injection port driven into the insertion hole, but also the decorative material and the anchoring material can be anchored to the concrete frame via the anchor pin with the injection port. it can. Therefore, the base of the newly provided decoration material (and the tension material) can be strengthened, and the new decoration material can be effectively prevented from falling off due to the drop of the base due to an earthquake or the like.

  In this case, it is preferable to further include a diameter expansion step of forming a diameter expansion portion at the hole bottom portion of the insertion hole between the drilling step and the adjusting agent application step.

  According to this configuration, the expanded portion that is expanded is pressed against the inner peripheral wall of the expanded portion. That is, the anchor pin with the injection port is anchored to the enlarged diameter portion. Therefore, the pullout strength of the anchor pin with the injection port can be remarkably increased, and the base of the newly provided decorative material (and the tensioning material) can be strengthened.

It is sectional drawing of the construction state in the pinning construction method of the anchor pin with an injection port which concerns on embodiment. It is sectional drawing of the construction state in the net barrier construction method of the anchor pin with an injection port which concerns on embodiment. It is the front view (a) and sectional drawing (b) of the anchor pin with an injection port which concern on embodiment. It is a perspective view of an expansion cone and an expansion collar of an anchor pin with an injection port. It is explanatory drawing explaining a pinning construction method with a construction procedure (1). It is explanatory drawing explaining a pinning construction method with a construction procedure (2). It is explanatory drawing explaining a net barrier construction method with a construction procedure (1). It is explanatory drawing explaining a net barrier construction method with a construction procedure (2). It is a perspective view showing the modification of an extended collar.

  Hereinafter, an anchor pin with an inlet according to an embodiment of the present invention, a pinning method using the same, and a net barrier method will be described with reference to the accompanying drawings. This pinning method is a so-called anchor pinning method with an injection port, and repairs floating portions (“floating”) generated on wall bodies such as an outer wall of an existing building, an atrium, or an inner wall of a hole. In the embodiment, the outer wall is repaired by implanting an anchor pin with an inlet so as to press down the finishing material into an insertion hole drilled in a repair required portion (floating portion) of the outer wall and injecting an adhesive. I have to.

  On the other hand, in the net barrier method, a finishing material is newly attached to an existing outer wall (wall body) where a floating part or a crack has occurred via a net, and the outer wall is perforated prior to attaching the finishing material. An anchor pin with an injection port is driven into a plurality of insertion holes so as to hold the net.

  FIG. 1 is a cross-sectional view showing the construction state of the pinning method according to the embodiment, and FIG. 2 is a cross-sectional view showing the construction state of the net barrier method according to the embodiment. As shown in both figures, the existing outer wall 1 is composed of, for example, a concrete frame 2 and a finishing material 3, and the finishing material 3 is composed of a base mortar 4, a mortar 5, and a tile 6 that is a decoration material. In this case, the decoration material may be a stone or the like, and the mortar may be only the mortar 5 or three or more layers.

  Here, it is assumed that the first floating portion 7 is generated between the concrete frame 2 and the base mortar 4 and the second floating portion 8 is generated between the tension mortar 5 and the tile 6. And in the outer wall 1, in order to repair this, the insertion hole 10 which penetrates the tile 6, the tension mortar 5, and the base mortar 4 and perforated the concrete housing 2 to a predetermined depth is formed.

  In the pinning method, the outer wall 1 is repaired by driving the anchor pin 20 with an injection port into the drilled insertion hole 10 and injecting the adhesive R (details will be described later). In the insertion hole 10 for the pinning method, a counterbore hole 11 is formed in the opening (tile 6) so that the anchor pin 20 with an injection port is buried inconspicuously.

  In the net barrier method, a net 13 is stretched on the wall surface of the outer wall 1, and an anchor pin 20 with an injection port is driven into the insertion hole 10 so as to hold the net 13, thereby creating a ground for a new tile 14 to be newly stretched ( Details will be described later). In both methods, the insertion hole 10 is drilled to the concrete frame 2 through the finishing material 3 to a depth of about 20 to 30 mm.

  FIG. 3 is a structural diagram of an anchor pin with an injection port used in the pinning method and the net barrier method, and FIG. 4 is a perspective view of an expansion cone and an expansion collar. As shown in FIGS. 1 to 4, the anchor pin 20 with an injection port has a widened portion 22 on the distal end side, a cylindrical anchor 21 anchored in the insertion hole 10, and a cylindrical anchor 21. And an expansion cone 23 that pushes the expansion portion 22 and an expansion collar 24 interposed between the expansion portion 22 and the expansion cone 23. By driving the expansion cone 23 with the cylindrical anchor 21 inserted into the insertion hole 10, the expanded portion 22 is pushed and expanded via the expansion collar 24, and the anchor pin 20 with an inlet is inserted into the insertion hole 10. Anchored.

  The cylindrical anchor 21 has a thin-walled cylindrical main body cylindrical portion 26, a flange portion 27 connected to the base end of the main body cylindrical portion 26, and an expanded portion 22 connected to the distal end of the main body cylindrical portion 26, It is integrally formed of stainless steel or the like. The expanded portion 22 has a plurality of constricted portions in the axial direction, is formed in an uneven shape, and is in pressure contact with the inner peripheral wall of the insertion hole 10 in the expanded state. The main body cylindrical portion 26 and the expanded portion 22 are formed to have the same diameter, and are formed to have a diameter of about 1 to 2 mm from the insertion hole 10. In addition, the form which expanded the outer peripheral surface may be sufficient as the expansion part 22, and the form which extended the main body cylindrical part 26 as it is may be sufficient as it.

  The flange portion 27 is a portion that fits into the counterbore hole 11 formed in the tile 6, and is formed to have substantially the same diameter as the counterbore hole 11. The counterbore hole 11 is formed to a depth of about ½ of the thickness of the tile 6, and the flange portion 27 is seated on the hole bottom of the counterbore hole 11 and embedded in the tile 6 (details will be described later). In addition, when injecting the adhesive R, a seal member made of rubber or polyvinyl chloride is provided on the outer peripheral surface of the flange 27 so that the adhesive R does not leak from between the counterbore 11 and the flange 27. It is preferable to keep it.

  The cylindrical anchor 21 has two split slits 28 cut from the distal end of the expanded portion 22 to a partial distal end side of the main body cylindrical portion 26, and two communication slits 29 formed in the main body cylindrical portion 26. Is provided. The two split slits 28 are disposed at a 180 ° point symmetrical position in the circumferential direction, and allow the expansion portion 22 to expand outward in the radial direction. Similarly, the two communication slits 29 are arranged at a 180 ° point symmetrical position in the circumferential direction, and the adhesive R supplied from the injection port 21a is passed through the insertion hole 10 to the first floating portion 7 and the second floating slit 29. Guide to the float 8.

  The number of the split slits 28 and the communication slits 29 is arbitrary. Further, the cylindrical anchor 21 may be divided into two structures with the split slit 28 and the communication slit 29 as a boundary, and may be integrally formed by welding or the like. That is, the cylindrical anchor 21 having a halved structure may be formed by press molding and butt welded to be integrally formed.

  The expansion cone 23 is formed in a tapered shape with a stainless steel or the like. The distal end portion of the expansion cone 23 is fitted into the proximal end portion of the expansion collar 24, and the expansion cone 23 and the expansion collar 24 are attached to the expansion portion 22 in this state. When the expansion cone 23 is driven, the expansion collar 24 is expanded, and the expansion portion 24 is expanded by expanding the expansion collar 24 (see FIG. 6A). In the present embodiment, the distal end portion of the expansion cone 23 is fitted into the expansion collar 24 inside the anchor pin 20 with an inlet, but it is not always necessary to fit it. However, in such a case, it is preferable that the distal end portion of the expansion cone 23 be chamfered.

  The extension collar 24 is formed in a cylindrical shape from stainless steel or the like, and has a plurality of slit portions 31 cut from the extension cone 23 side. The thing of embodiment has the four slit parts 31 at equal intervals in the circumferential direction, and each slit part 31 is extended from the base end side to the position of about 2/3 of the full length. Further, the extension collar 24 is formed to have a longer dimension in the axial direction than the expanding portion 22, and is fitted to the expanding portion 22 in a state in which the distal end portion protrudes from the distal end of the expanding portion 22 (cylindrical anchor 21). It is installed to match. Note that any one slit portion 31 may be extended to the tip of the extension collar 24 and fitted to the expansion portion 22 using the spring force of the extension collar 24.

  The expansion cone 23 is preferably attached to the expansion collar 24 by being fitted into the expansion collar 24 or being weakly bonded in this state. Further, it is preferable that the expansion collar 24 is attached to the expansion portion 22 by being fitted into the expansion portion 22 or weakly bonded in this state. Of course, the expansion cone 23 and the expansion collar 24 may be mounted immediately before the anchor pin 20 with injection port is inserted into the insertion hole 10.

  On the other hand, the insertion hole 10 is formed so that the flange portion 27 of the inserted anchor pin 20 with the injection port is seated on the hole bottom of the counterbore hole 11 and considering the reduction of the diamond core bit 42 described later, A hole is drilled to such a depth that a clearance is formed between the tip of the anchor 21. Therefore, when the anchor pin 20 with injection port is inserted into the insertion hole 10, the expansion collar 24 protruding from the tip of the cylindrical anchor 21 comes into contact with the bottom of the insertion hole 10.

  Specifically, after inserting the anchor pin 20 with an inlet into the insertion hole 10, when the collar 27 is tapped and seated on the hole bottom of the counterbore hole 11, the expansion collar 24 is inserted into the hole of the insertion hole 10. While abutting against the bottom, it slides slightly to the base side to maintain the contact state with the hole bottom (see FIG. 5C). Of course, when the clearance is large, the expansion collar 24 slides to the tip side and hits the bottom of the hole at the initial stage of driving the expansion cone 23.

  The anchor pin 20 with the inlet configured as described above is commonly used in the pinning method and the net barrier method, but as shown in FIG. A cosmetic cap 33 is provided. The decorative cap 33 has a disk-shaped cap body 34 formed to have the same diameter as the opening (the counterbore hole 11) of the insertion hole 10, and a fitting mounting portion 35 that fits the cylindrical anchor 21 (injection port 21a). And are integrally formed.

  The surface of the cap body 34 is baked with the same color as the tile 6. When the cosmetic cap 33 is mounted so that the fitting mounting portion 35 is fitted to the injection port 21a, the cap body 34 is fitted into the counterbore hole 11, and the surface of the cap body 34 and the surface of the tile 6 are flush with each other. It becomes. Thereby, the makeup | decoration cap 33 becomes assimilated with the tile 6 and becomes inconspicuous.

  On the other hand, as shown in FIG. 2, the anchor pin 20 with an injection port used in the net barrier method has a washer-like presser plate 65 attached to the collar part 27 as described later, or the collar part 27 is greatly formed. It is good also as a structure which serves as the holding plate 65 (large diameter).

  Here, with reference to FIG. 5 and FIG. 6, the pinning method using the anchor pin 20 with an injection port is demonstrated. In this pinning method, a drilling step (FIG. 5A) for drilling the insertion hole 10 in the repaired portion of the outer wall 1 (FIG. 5A), and a diameter expanding step (FIG. 5 (b)), an insertion step (FIG. 5 (c)) for inserting the anchor pin 20 with the inlet into the insertion hole 10, and an anchoring step (FIG. 6 (a)) for driving the expansion cone 23. The adhesive injection step (FIG. 6B) for injecting the adhesive R into the insertion hole 10 through the injection port 21a and the capping step for attaching the decorative cap 33 (FIG. 6C) are performed. I have. Prior to the drilling step, the outer wall 1 is keyed to detect the drilling position (floating portion) of the insertion hole 10 and marking is performed at the center position of the tile 6 at the corresponding location.

  In the drilling step of FIG. 5A, the insertion hole 10 is drilled using the punching device 41. The drilling device 41 is configured by mounting a diamond core bit 42 with an auxiliary bit 43 on an electric drill (not shown). The diamond core bit 42 is directed to the marking portion of the tile 6, and the diamond core bit 42 is rotated by an electric drill to perform drilling. The perforation is performed so as to reach the predetermined depth of the concrete housing 2 at a right angle to the tile 6 and through the finishing material 3. When the insertion hole 10 is drilled to a predetermined depth by the diamond core bit 42, the counterbore hole 11 having a predetermined depth is drilled in the tile 6 by the auxiliary bit 43 at the same time. In the diamond core bit 42, the coolant is supplied to the cutting edge portion 45 through the shank portion 44.

  In the diameter expansion process of FIG. 5B, the diameter expansion portion 15 is formed at the bottom of the insertion hole 10 using the diameter expansion device 50. The diameter expansion device 50 is configured by mounting a diameter expansion drill bit 46 on an electric drill (not shown). The diameter-expanding drill bit 46 includes, for example, a cutting blade portion 47, a cutting blade holding portion 48 that holds the cutting blade portion 47 movably in the radial direction, and a shank portion 49 that supports the cutting blade holding portion 48. The cutting blade portion 47 is eccentrically rotated by centrifugal force. The diameter expansion drill bit 46 is inserted into the insertion hole 10 so as to abut against the hole bottom, and the diameter expansion drill bit 46 is rotated by an electric drill. Thereby, the cutting edge part 47 rotates eccentrically, the insertion hole 10 is ground, and the enlarged diameter part 15 is formed. The diameter-expanding drill bit 46 is also supplied with a coolant to the cutting edge portion 47 via the shank portion 49. Then, the insertion hole 10 is also cleaned with the cleaning liquid.

  In the insertion step of FIG. 5 (c), the anchor pin with injection port 20 is inserted into the insertion hole 10 so that the flange portion 27 is seated on the bottom of the counterbore hole 11. In this case, the anchor pin with injection port 20 may be tapped lightly. When the anchor pin 20 with the inlet is inserted into the insertion hole 10, the expansion collar 24 comes into contact with the bottom of the insertion hole 10.

  In the anchoring process of FIG. 6A, the driving tool 51 is inserted from the injection port 21a into the anchor pin 20 with the injection port, and the expansion cone 23 is driven. When the expansion cone 23 is driven, the expansion collar 24 expands from the base end side, and at the same time, the expansion portion 22 that receives the expansion force from the expansion collar 24 expands outward. Thereby, the anchor pin 20 with an inlet is anchored to the insertion hole 10 so that the expanded portion 22 bites into the expanded diameter portion 15.

  In the adhesive injection step of FIG. 6B, a manual resin injector 52 is used, and the injection nozzle 53 is inserted from the injection port 21a into the anchor pin 20 with the injection port, and pumping is performed. By this pumping, the adhesive R (epoxy resin) discharged from the injection nozzle 53 flows into the insertion hole 10 from the two communicating slits 29 of the anchor pin 20 with injection port, and further, the first floating portion 7 and the second floating portion 7 The float 8 is filled. When the injection nozzle 53 is pulled out, the adhesive R is attached around the injection port 21a for the cosmetic cap 33.

  In the capping step of FIG. 6 (c), the fitting mounting portion 35 is fitted to the injection port 21 a of the anchor pin 20 with injection port, and the cap body 34 is fitted to the counterbore hole 11 to make the cosmetic cap 33. Install. At that time, the decorative cap 33 is pushed in so that the surface of the cap body 34 and the surface of the tile 6 are flush with each other.

  In this way, the pinning method is carried out, but the diameter expansion step can be omitted. Further, the adhesive injection step may be performed immediately before the insertion step. Furthermore, in the capping step, the counterbore hole 11 may be filled with the putty hole 11 instead of the decorative cap 33. In such a case, the putty is colored in the same color as the tile 6 and applied so as to rise, and after curing, the remaining putty (the raised portion) is scraped off with a cutter.

  Next, with reference to FIG. 7 and FIG. 8, the net barrier construction method using the anchor pin 20 with an inlet is demonstrated. This net barrier method includes a drilling process for drilling a plurality of insertion holes 10 in the outer wall 1, a diameter expansion process for forming a diameter-enlarged portion 15 at the bottom of the insertion hole 10, and a surface conditioner on the surface of the outer wall 1. An adjusting agent applying step for applying 61, a net attaching step for attaching the net 13 on the base adjusting agent 61 via the net attaching agent 62, and an anchor pin 20 with an injection port are driven into each insertion hole 10 And a net fixing process for injecting the adhesive R from the injection port 21a to hold the net 13 and a tile tensioning process (decorative material tensioning process) for stretching the new tile 14 on the net 13 via the tensioning mortar 5. ing. Prior to the drilling step, the wall surface (tile surface) is inspected and cleaned.

  In the drilling step and the diameter expansion step, a plurality of insertion holes 10 are drilled and a diameter expansion portion 15 is formed in each insertion hole 10 in the same manner as the pinning method described above. However, in this case, a plurality of insertion holes 10 (including the enlarged diameter portion 15) are formed in a predetermined arrangement pitch in the entire length of the wall surface (see FIG. 7A).

In the adjusting agent application step, the base adjusting agent 61 is applied to the entire wall surface, and then brushing is performed (see FIG. 7B).
In the net tensioning step, a net tensioning agent 62 is applied on the cured base conditioner 61, and the net 13 is tensioned while being fluffed with a roller 64 (see FIG. 7C).

  In the net fixing process, the anchor pin 20 with the injection port with the holding plate 65 attached is inserted into the insertion hole 10 in the same manner as the insertion process and anchoring process of the pinning method, and then the expansion cone 23 is driven (see FIG. 8 (a)). Further, as in the adhesive injection step of the pinning method, the adhesive R is injected into the insertion hole 10 through the injection port 21a (see FIG. 8B). When the anchor pin 20 with the inlet is inserted into the insertion hole 10, the expansion collar 24 hits the bottom of the insertion hole 10. Subsequently, when the expansion cone 23 is driven, the expansion portion 22 is expanded through the expansion collar 24 and anchoring is performed. Furthermore, by injecting the adhesive R from the injection port 21a, the first floating portion 7 and the second floating portion 8 are filled with the adhesive.

  In the tiling process, the new tile 14 is tiled by a normal method on the cured net paste 62 and the net 13 (see FIG. 8C). That is, the mortar 5 is applied on the net 13 and the new tile 14 is tiled thereon.

  In this way, the net barrier method is carried out, but in this case as well, the diameter expansion process can be omitted. Further, the injection of the adhesive R may be performed immediately before the net fixing step, that is, immediately before the anchor pin 20 with the injection port is inserted into the insertion hole 10.

Next, a modified example of the extended collar 24 will be described with reference to FIG.
In the extended collar 24 according to the first modification of FIG. 9A, a plurality of thin portions 37 are formed on the outer peripheral surface instead of the plurality of slit portions 31. Each thin portion 37 extends linearly from the proximal end to the distal end of the extension collar 24 in the axial direction, and is formed by pressing or grinding. When the extension cone 23 is driven into the extension collar 24, the thin collar portion 37 of the extension collar 24 is broken from the base end side and spreads outward.

  In the extended collar 24 according to the second modified example of FIG. 9B, each slit portion 31 is formed to be cut in a “V” shape. Further, four (plural) notches 38 are formed on the distal end side of the extension collar 24. The four slit portions 31 and the four notch portions 38 are formed so as to be alternately positioned in the circumferential direction. In such a configuration, the extended collar 24 can be easily expanded. Therefore, the expansion part 22 can be expanded with the same driving force as in the prior art.

  As described above, according to the anchor pin 20 with an inlet according to the present embodiment, since the expansion collar 24 is interposed between the expansion portion 22 and the expansion cone 23, the expansion collar 24 is inserted. The expansion cone 23 is driven in a state where it hits the bottom of the hole 10. Therefore, when the expansion cone 23 is driven, the driving impact is absorbed by the bottom of the insertion hole 10 via the expansion collar 24 and does not act on the cylindrical anchor 21. Accordingly, it is possible to prevent the tile 6 and the mortar 5 from being damaged, and to prevent the first floating portion 7 and the second floating portion 8 from being closed. Thereby, in the pinning construction method and the net barrier construction method, it is possible to effectively prevent the construction failure.

  Moreover, since the expansion part 22 receives the expansion force on the base side which is difficult to expand by the expansion collar 24, the expansion part 22 as a whole is pressed against the insertion hole 10 and exhibits a gripping force. Therefore, the pullout strength of the anchor pin 20 with an inlet can be increased. In addition, in the above-described pinning method and net barrier method, the expanded portion 22 that is expanded is pressed and locked to the expanded portion 15 of the insertion hole 10, so that the pullout strength of the anchor pin 20 with the inlet is markedly increased. Can be increased.

  In addition, the anchor pin 20 with an inlet according to the present invention can be applied not only to the outer wall 1 having the tile 6 finish as in the embodiment but also to the outer wall 1 in which the concrete casing 2 is simply mortar finished.

  1 outer wall, 2 concrete frame, 3 finishing material, 6 tiles, 7 first floating part, 8 second floating part, 10 insertion hole, 11 counterbore hole, 13 net, 14 new tile, 15 expanded diameter part, 20 inlet Anchor pin with 21, cylindrical anchor, 21a inlet, 22 expansion part, 23 expansion cone, 24 expansion collar, 27 collar, 31 slit part, 61 ground conditioner, 62 net sticking agent, R adhesive

Claims (8)

An anchor pin with an inlet that is anchored to an insertion hole that penetrates the finishing material and is drilled in the concrete frame,
A cylindrical anchor having an expanded portion on the distal end side and anchored in the insertion hole;
An expansion cone that is driven into the cylindrical anchor and spreads the expansion portion;
An expansion collar attached to the inner peripheral surface of the expansion portion,
The expansion pin is expanded through the expansion collar that is expanded by the expanded cone that has been driven in.   The anchor pin with an injection port according to claim 1, wherein a distal end portion of the expansion collar protrudes from a distal end of the cylindrical anchor.   The anchor pin with an injection port according to claim 1 or 2, wherein the extension collar has a plurality of slit portions cut from the extension cone side.   The anchor pin with an injection port according to any one of claims 1 to 3, wherein the expansion collar is formed in a dimension longer than the expansion portion in the axial direction. A pinning method for repairing a wall body made of a finishing material and a concrete frame using the anchor pin with an inlet according to any one of claims 1 to 4,
A perforating step of perforating the insertion hole in the concrete frame through the finishing material for the repair point of the wall,
An insertion step of inserting the anchor pin with an injection port into the insertion hole drilled;
An anchoring step of driving the expansion cone of the anchor pin with the inlet inserted,
An adhesive injection step of injecting an adhesive into the insertion hole via the anchor pin with an injection port. Between the drilling step and the insertion step,
The pinning method according to claim 5, further comprising a diameter expansion step of forming a diameter expansion portion at a hole bottom portion of the insertion hole. A net barrier method for repairing a wall made of a decorative material, a tensioning material and a concrete frame using the anchor pin with an injection port according to any one of claims 1 to 4,
A perforating step for perforating the plurality of insertion holes in the concrete frame through the decorative material and the tensioning material with respect to the wall body;
An adjusting agent application step of applying a base adjusting agent to the surface of the wall,
A net tensioning step of pasting a net on the base conditioner via a net sticking agent;
For each of the insertion holes, the anchor pin with the injection port is driven and an adhesive is injected from the injection port to hold the net,
A net barrier construction method comprising: a decorating step for newly decorating a decor on the net through a plastering material. Between the drilling step and the adjusting agent application step,
The net barrier method according to claim 7, further comprising a diameter expansion step of forming a diameter expansion portion at a hole bottom portion of the insertion hole.

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