JPWO2007089010A1 - Adhesive anchor, method for constructing adhesive anchor - Google Patents

Abstract

Development of technology that can stably maintain shear rigidity and tensile strength (pullout strength) even when base material is heated or cracked in adhesive anchors. Not only the fixing force of the resin material 9 put into the lower hole 111 but also the extended portion 21 at the tip of the bolt 2 that is extended by the cone 3 that is attached to the bolt tip 2 by driving the bolt 2 into the lower hole 111 is a base material. An adhesive anchor 1 that exhibits a fixing force to 110 and a construction method thereof are provided.

Description

  TECHNICAL FIELD The present invention relates to an adhesive anchor and an adhesive anchor construction method, and in particular, an adhesive anchor and an adhesive anchor construction method capable of stably maintaining rigidity and proof strength against heating and cracking of a base material after construction. About.

Among post-installed anchors, so-called adhesive anchors are for fixing bolts inserted into holes (lower holes) drilled in a base material with a resin material (having adhesiveness) inserted into the holes ( For example, Patent Document 1).
The general construction procedure for this adhesive anchor is as follows.
(1) Drilling a pilot hole in the base material.
(2) Cleaning the inside of the pilot hole.
(3) A resin material is put into the prepared hole (a capsule or an injection enclosing the resin material is generally used).
(4) Insert bolts into the pilot holes.
(5) Curing of resin material.
Bolts include full thread bolts and deformed steel bars.
Adhesive anchors are advantageous in terms of cost because they require very few parts. In addition, the required strength of the base material to be constructed is lower than that of, for example, a metal expansion anchor such as a core rod driving type, and even if it is a brittle base material such as a deteriorated brick frame, a hole can be formed. There is an advantage that it can be applied to almost any base material if a hole can be formed.
JP 2005-68673 A

By the way, the conventional adhesive anchor has the following problems due to the structure relying on the resin material for the fixing force to the base material.
(A) When high heat is applied to a base material such as a concrete frame on which an anchor is constructed, rigidity against shearing force (displacement force in a direction perpendicular to the anchor) decreases.
(B) If cracks occur in the base material such as a concrete frame on which the anchor is installed after the anchor is installed, the proof stress such as shearing or pulling (drawing) may be significantly reduced.
The present invention has been made in view of the above problems, and an object of the present invention is to provide an adhesive anchor that can stably maintain rigidity and proof stress against heating, cracking, and the like of a base material, and an adhesive anchor construction method.

In order to solve the above problems, the present invention provides the following configuration.
The invention according to claim 1 is an adhesive anchor, wherein the bolt is inserted into a pilot hole drilled in the base material, and a cone fitted inside the expansion portion in which the tip of the bolt is formed in a cylindrical shape. And the expansion part is expanded by driving the bolt into a cone abutting against the innermost part of the lower hole, and can be fixed to a base material.
According to a second aspect of the present invention, the bolt is formed of a material equivalent to JIS G 4107, and when the bolt is driven into a cone in contact with the innermost part of the lower hole, the extension portion has a tip thereof. 2. The adhesive anchor according to claim 1, wherein the adhesive anchor is extended while scraping off a hole wall of the pilot hole.
The invention according to claim 3 provides the adhesive anchor according to claim 1 or 2, characterized in that the tip shape of the cone at the back side of the cone is substantially V-shaped.
The invention according to claim 4 is characterized in that the tip shape of the cone at the inner side of the lower hole is cut at an angle of substantially 45 degrees with respect to the axial direction from the side of the cone. The adhesive anchor described in 1) is provided.
According to a fifth aspect of the present invention, there is provided the adhesive anchor according to any one of the first to fourth aspects, further comprising a rigid sleeve that is externally inserted into the bolt and inserted into the prepared hole.
The invention according to claim 6 is characterized in that a groove for allowing an anchoring resin material to pass in the axial direction of the rigid sleeve is formed on the outer peripheral surface and / or inner peripheral surface of the rigid sleeve. An adhesive anchor according to claim 5 is provided.
The invention according to claim 7 provides the adhesive anchor according to claim 6, wherein the groove is formed in a continuous spiral shape that opens at both axial ends of the rigid sleeve.
The invention according to claim 8 provides the adhesive anchor according to claim 5, wherein a flange is formed at one end of the rigid sleeve.
In the invention according to claim 9, a groove for allowing the resin material for anchor bonding to pass in the axial direction of the rigid sleeve is formed on the outer peripheral surface and / or the inner peripheral surface of the rigid sleeve, and The adhesive anchor according to claim 8, wherein unevenness is provided on a surface in contact with the base material.
The invention according to claim 10 is the construction method of the adhesive anchor according to any one of claims 1 to 9, wherein the adhesive anchor is inserted into a prepared hole containing a resin material for anchor adhesion, The expanded portion that is expanded by driving a bolt into a cone that is in contact with the deepest part of the lower hole is fixed to a base material, and the bolt, the cone, and the rigid sleeve are fixed to the base material by curing the resin material. Provided is a method for constructing an adhesive anchor characterized by being integrally fixed to a material.
The invention according to claim 11 is the construction method for the adhesive anchor according to any one of claims 1 or 3 to 9, wherein the rotation is performed in the prepared hole in which the container containing the resin material for anchor adhesion is inserted. The cone in which the adhesive anchor was inserted while the container containing the resin material for anchor adhesion was broken and stirred using an electric tool that could be hit, and the bolt was in contact with the innermost part of the lower hole In addition, the expansion part expanded by driving and rotating the electric tool is fixed to the base material, and the bolt, the cone, and the rigid sleeve are integrally fixed to the base material by curing the resin material. There is provided a construction method of an adhesive anchor characterized in that
According to the twelfth aspect of the present invention, after the expansion portion is expanded and fixed to the base material, before the resin material is cured, the rigidity is extrapolated to the bolt from the rear end side protruding from the base material of the bolt. 12. A method for constructing an adhesive anchor according to claim 10 or 11, wherein a sleeve is inserted into the pilot hole.

  According to the present invention, not only the fixing force due to the resin material for bonding the anchor but also the expansion portion provided in the bolt is expanded in the lower hole and fixed to the base material, so that the anchor fixing force to the base material is increased. can get. This ensures stable anchor strength (tensile strength, etc.) and shear rigidity against the base material even if the anchor strength of the resin material decreases due to heating of the base material and cracks occur in the base material after anchor construction. Can be maintained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the figure, reference numeral 110 denotes a concrete frame (base material), and 111 denotes a pilot hole.
FIG. 1 shows an adhesive anchor 1 (hereinafter sometimes abbreviated as “anchor”) according to the present invention.
In FIG. 1, the anchor 1 is fitted inside a bolt 2 which is a rod-like member inserted into a pilot hole 111 drilled in a base material 110 and an extension portion 21 in which the tip of the bolt 2 is formed in a cylindrical shape. It comprises a cone 3 and a rigid sleeve 4 that is externally inserted into the bolt 2 and inserted into the lower hole 111.
Moreover, the resin material scattering prevention board 5 mentioned later can be attached to the volt | bolt 2. FIG.
The bolt 2, the cone 3, and the rigid sleeve 4 are made of metal such as iron, but the material is not limited to this.
In the illustrated example, the bolt 2 is a full screw bolt, but may be a deformed steel bar, for example.
The extended portion 21 of the bolt 2 is formed in a cylindrical shape having a cone receiving hole 22 on the inner side, and is divided into a plurality by a split 23. As will be described later, the split 23 of the expansion portion 21 is for facilitating expansion of the expansion portion 21 when the bolt 2 is driven into the cone 3.
A part of the cone 3 is stored in the cone storage hole 22. The cone 3 is attached to the tip end of the bolt 2 in a protruding state with a part of the cone 3 fitted in the cone storage hole 22.
The cone 3 for expanding the expansion portion 21 has a spindle shape, and when the bolt 2 is driven into the cone 3, the expansion portion 21 is expanded along the outer surface of the cone 3.
However, the shape of the cone 3 is not limited to the above-described spindle shape as long as the expansion portion 21 can be expanded.
Further, the cone 3 has a substantially V-shaped tip at the bottom of the lower hole as in the cone 31 shown in FIG. 7 or the side of the cone as in the cone 32 shown in FIG. May be cut at an angle of approximately 45 degrees with respect to the axial direction. If the resin material for anchoring is an injection type (a type in which a thixotropic adhesive material is directly filled into the lower hole), the tip shape of the cone 3 on the inner side of the lower hole is not particularly limited. In the case of a capsule 91 encapsulating a resin material for anchor adhesion (a type in which a resin and a curing agent are separately separated in the capsule), the container is destroyed when the adhesive anchor 1 is inserted into the lower hole 111. Therefore, it is necessary to make the shape as shown in FIG. 7 and FIG.
About the bolt 2, it is preferable to employ | adopt the steel thing of a JISG4107 (SNB7) equivalent material, for example. In this case, as shown in FIGS. 2 and 3, the anchor 1 is inserted into the lower hole 111 drilled in the concrete base material 110, and the bolt 2 is inserted into the innermost portion 111 b (hole bottom) of the lower hole 111. When the expansion portion 21 is expanded by being driven into the cone 3 abutted on the expansion portion 21, the expansion portion 21 expands while the tip of the expansion portion 21 scrapes the hole wall of the lower hole 111. As a result, the expanded portion 21 surely bites into the hole wall of the lower hole 111, and the tensile strength (pullout strength) is improved as compared with the conventional adhesive anchor.
Conventionally, for example, metal expansion anchors such as main body drive-in type anchors, which are formed of a material equivalent to JIS G 3101 (SS400. General structural rolled steel), have been widely used, but a material corresponding to JIS G 3101 (SS400) is Generally, the strength is inferior to the above-mentioned JIS G 4107 (SNB7) equivalent material. In the case of a metal expansion anchor formed of a material equivalent to JIS G 3101 (SS400), when the expansion portion is expanded, bending deformation occurs in the expansion portion pressed against the hole wall, and the amount of biting into the hole wall is not always large. Don't be. On the other hand, the extended portion 21 of the bolt 2 formed of a material equivalent to JIS G 4107 (SNB7) is expanded while the tip of the expanded portion 21 scrapes the hole wall of the lower hole 111 by expansion by driving into the cone 3. For this reason, the extended portion 21 surely bites into the hole wall of the lower hole 111, and a high tensile strength (pullout strength) can be obtained with certainty.
Needless to say, in addition to the bolt 2, the cone 3 and the rigid sleeve 4 may be formed of a material equivalent to JIS G 4107 (SNB7).
On the outer peripheral surface of the rigid sleeve 4, continuous spiral grooves 41 that are open at both axial ends of the rigid sleeve 4 are formed.
When the rigid sleeve 4 is inserted into the lower hole 111, the groove 41 allows the excess resin material 9 pushed out from the lower hole 111 to pass therethrough and be discharged out of the opening 111 a of the lower hole 111. Play a role. Hereinafter, the groove 41 is also referred to as an excess resin discharge groove.
The groove may be formed not on the outer peripheral surface of the rigid sleeve but on the inner peripheral surface of the rigid sleeve, or may be formed on both the outer peripheral surface and the inner peripheral surface.
Further, the shape of the groove is not limited to the spiral shape described above. The groove only needs to function as a surplus resin discharge groove that allows surplus resin material 9 to pass through in the axial direction of the rigid sleeve 4. For example, the groove is a straight groove extending along the axial direction of the rigid sleeve 4. There may be.
However, when the groove is formed on the outer peripheral surface of the outer peripheral surface and the inner peripheral surface of the rigid sleeve 4, the fixing force between the base material 110 and the anchor 1 made of a resin material (the inner surface of the lower hole (the presence of minute irregularities exists) It is preferable in terms of improvement in fixing / engagement of the resin material 9 with respect to the adhesive and the adhesive force generated by the resin material 9), and in terms of improvement in the fixing force, a spiral shape (spiral groove) ) Is preferable to the straight groove.
In addition, when the all screw bolt is employ | adopted as the volt | bolt 2, the advantage that the adhering force between the rigid sleeve 4 and the volt | bolt 2 is ensured by the resin material which entered the screw groove 24 of the outer peripheral surface of the volt | bolt 2. There is also. The screw groove 24 can also function as an excess resin discharge groove.
Further, the rigid sleeve 4 may have a flange formed at the end thereof as shown in FIGS. Although FIG. 11 illustrates the tapered flange 42, the flange is not particularly limited as long as the volume of the end portion of the rigid sleeve 4 is increased. As illustrated in FIG. 13, the flange 42 illustrated in FIG. 11 is embedded in the opening 111 a of the lower hole 111 after being inserted into the lower hole 111 of the rigid sleeve 4. The vicinity of the opening end of the rigid sleeve 4 is deformed into an elliptical shape when a large bending or shearing force is applied. Therefore, by providing a flange 42 on the outer periphery of the end of the rigid sleeve 4 that abuts on the concrete opening 111a on which bending and shearing forces act intensively, the rigidity and strength of the end of the rigid sleeve 4 are further increased. The shear rigidity and bending strength of the adhesive anchor 1 can be further improved.
When the rigid sleeve 4 is flat in the radial direction and has a large flange 43 as shown in FIG. 12, the rigidity and strength of the rigid sleeve near the opening 111a are significantly increased, and as shown in FIG. Since the excess resin overflowing from the opening 111a when the rigid sleeve 4 is inserted is filled between the flange 43 and the surface 110a of the concrete base material, an adhesive force due to the resin is also generated. Therefore, since the force acting on the adhesive anchor 1 as a bending or shearing force is transmitted while being distributed to a wider concrete portion, a significant performance improvement can be achieved. In addition, if irregularities such as grooves are formed on the rear surface of the flange (surface on the base material side), the adhesion is further improved.
In FIG. 1, the code | symbol 5 shows the resin material scattering prevention board.
The resin material scattering prevention plate 5 has a ring shape, and is provided by inserting a hole 51 penetrating the center portion through the bolt 2 and extrapolating the bolt 2 as shown in FIGS.
The resin material scattering prevention plate 5 is provided so as to cover the opening 111a of the lower hole 111 (specifically, the gap between the bolt 2 and the inner peripheral surface of the lower hole 111) from the surface 110a side of the base material 110. For example, the excess resin material 9 that overflows from the lower hole 111 when the bolt 2 is driven into the lower hole 111 is prevented from scattering.
Next, an example of the construction method of the anchor 1 mentioned above is demonstrated with reference to FIGS.
2 to 6 exemplify the case where the concrete body is constructed by inserting the bolt 2 into the prepared hole 111 drilled from the side surface, but the present invention is not limited to this. For example, the floor ( Needless to say, it can also be applied to construction on the floor (construction from the floor), ceiling (construction from the bottom of the ceiling), and the like.
First, the following steps (1) to (4) are performed.
(1) Drilling a pilot hole in the base material.
(2) Cleaning the inside of the pilot hole.
(3) Put the resin material into the prepared hole.
Here, in the step (3) of putting the resin material into the lower hole 111, for example, a method of putting a capsule encapsulating the resin material into the lower hole 111 or injecting it by injection can be employed. A sufficient amount of the resin material is poured into the lower holes 111 so that the resin material is evenly distributed throughout the lower holes 111.
Next, when injecting the resin material by injection, as shown in FIG. 2, a bolt 2 having a cone 3 attached to the tip (hereinafter also referred to as a bolt 2A with a cone) is inserted into the prepared hole 111. As shown in FIG. 3, the bolt 2 is struck by using a tool such as a hammer 8 from the rear end side (the side opposite to the front end to which the cone 3 is attached) and driven into the innermost portion 111b of the lower hole 111. The cone 3 is brought into contact with the bottom of the hole (the left end in FIG. 3), and the expansion portion 21 is driven into the cone 3 to be expanded (anchor insertion and driving step). As a result, the expanded portion 21 that has been driven and expanded into the cone 3 bites into the hole wall of the lower hole 111, and the bolt 2 is fixed to the base material 110.
Further, when a capsule encapsulating a resin material as shown in FIG. 9 is put into the lower hole 111, the cone 3 is shaped as shown in FIG. 7 or FIG. While rotating and striking the adhesive anchor, the capsule (the type in which the resin and the curing agent are separately stored in the capsule) is broken and stirred thoroughly into the innermost portion 111b of the lower hole 111. As shown in FIG. 10, the expansion portion 21 is driven and expanded as shown in FIG. As a result, as in the case of the injection, the expanded portion 21 that has been driven and expanded into the cone 3 bites into the hole wall of the lower hole 111, and the bolt 2 is fixed to the base material 110.
In FIG. 2, the cone-attached bolt 2 </ b> A to be inserted into the lower hole 111 is obtained by extrapolating the resin material scattering prevention plate 5 to the bolt 2. Thereby, even if the resin material 9 jumps out of the lower hole 111 when the bolt 2 is driven, the resin material scattering prevention plate 5 can prevent the resin material 9 from scattering.
However, at this stage, the rigid sleeve 4 is not extrapolated to the bolt 2.
2 and 3, reference numeral 25 is a marking provided on the outer periphery of the bolt 2 by, for example, coloring.
This marking 25 is when the amount of bolt 2 (embedding depth) into the lower hole 111 reaches a place where the fixing force of the bolt 2 to the base material 110 due to the expansion of the expansion portion 21 is sufficiently secured. It is provided at a position that reaches the surface 110 a of the base material 110 at T degrees. When the marking 25 reaches the base material 110 by driving the bolt 2 into the lower hole 111, the necessary embedding length is secured, and the fixing force due to the expansion of the expansion portion 21 is sufficiently secured.
When the marking 25 is located at a position separated from the base material surface 110a, the distance between the marking 25 and the base material surface 110a indicates the remaining driving amount of the bolt 2 into the lower hole 111 by T degrees. .
In addition, the resin material scattering prevention plate 5 and the marking 25 are not necessarily essential and can be omitted.
It goes without saying that the lower hole 111 is formed in advance at a drilling depth that secures the necessary embedding length of the bolt 2.
However, the drilling depth of the lower hole 111 is such that when the marking 25 of the bolt 2 reaches the base material 110 by driving into the lower hole 111, the necessary embedding length is secured and the fixing force due to the expansion of the expansion portion 21 is also secured. Set to ensure enough.
Next, the resin material scattering prevention plate 5 is removed from the bolt 2, and as shown in FIG. 4, the rigidity of the bolt 2 from the rear end side protruding from the lower hole 111 to the outside of the base material 110 (surface 110 a side) is rigid. The sleeve 4 is extrapolated to the bolt 2, and the rigid sleeve 4 is pushed into the lower hole 111 and inserted. The rigid sleeve 4 is pushed into the lower hole 111 by, for example, using a driving jig 6 (a driving rigid sleeve) and hitting with a tool such as a hammer 8.
However, the rigid sleeve 4 is preferably housed in a position separated from the expanded portion 21 of the anchor 1, for example, in the opening 111 a of the lower hole 111, in terms of improving the shear strength.
Needless to say, the process of inserting the rigid sleeve 4 into the lower hole 111 (sleeve insertion process) after the expansion of the expansion part 21 is performed before the resin material is cured.
Needless to say, the lower hole 111 is formed with an inner diameter into which the rigid sleeve 4 can be inserted. However, in terms of securing shear rigidity, the inner diameter of the lower hole 111 corresponds to the outer diameter of the rigid sleeve 4 so that the rigid sleeve 4 press-fitted into the lower hole 111 is fixed by the pressure contact force with the inner surface of the lower hole 111. It is preferable to adjust.
When the rigid sleeve 4 is inserted into the lower hole 111, the excess resin material 9 in the lower hole 111 passes through the groove 41 of the rigid sleeve 4 and outside the lower hole 111, that is, outside the base material 110. It overflows. Thereby, the rigid sleeve 4 can be smoothly pushed into the lower hole 111.
When the pushing of the rigid sleeve 4 into the lower hole 111 is completed, as shown in FIG. 5, the opening 111a of the lower hole 111 on the base material surface 110a and the resin material 9 (surplus resin 91) accumulated in the vicinity thereof are removed. This completes the construction (FIG. 6).
In FIG. 5, reference numeral 7 denotes a surplus resin scraping jig (scraper).
When the resin material 9 in the lower hole 111 is cured, the anchor (the bolt 2A with cone and the rigid sleeve 4) is firmly fixed to the base material 110 by the resin material 9.
Here, the anchor 1 is supported by the expanded portion 21 expanded in the lower hole 111 until the resin material 9 is hardened, and the tip end side of the bolt 2 is supported on the central axis of the lower hole 111. Also supported by the rigid sleeve 4 housed in the central axis of the lower hole 111.
That is, the expansion part 21 and the rigid sleeve 4 fulfill the function of supporting the anchor 1 on the central axis of the lower hole 111 (posture maintaining function).
For this reason, even when the anchor 1 is constructed sideways as shown in FIG. 5 and the like, the anchor 1 is less likely to be eccentric in the lower hole 111, and the anchor 1 is centered in the lower hole 111 by the resin material 9. It is also easy to fix so as to be on the axis.
It should be noted that the prevention of the eccentricity of the anchor 1 in the pilot hole 111 can be effectively obtained even when the expansion portion 21 alone, that is, the rigid sleeve 4 is not provided. When the rigid sleeve 4 is used, an eccentricity prevention effect can be obtained with certainty.
According to the anchor 1 and its construction method, the fixing force by the hardening of the resin material 9 (fixing / engaging of the resin material 9 with respect to the inner surface of the lower hole (the presence of fine irregularities), and the adhesive force of the resin material 9; The anchor 1 is fixed to the base material 110 not only by the fixing force generated by the expansion portion 21 but also by the mechanical fixing force to the base material 110 due to the expansion of the expansion portion 21.
For this reason, after completion of the installation of the anchor 1 on the base material 110, the anchor of the anchor 1 made of the resin material 9 is caused by factors such as carbonization of the resin material due to the base material 110 being heated to a high temperature and cracks in the base material 110. Even if the fixing force decreases, the anchoring force of the extension portion 21 fixed to the base material 110 and the rigidity of the rigid sleeve 4 cause shear rigidity (on the rear end side portion protruding from the base material 110 of the anchor 1 to the anchor 1). It is possible to sufficiently secure the yield strength (displacement force acting in the vertical direction) and the yield strength (tensile strength, etc.).
Further, in the construction work of the anchor 1, even before the curing of the resin material 9 in the pilot hole 111 is completed, that is, before the resin material develops strength, the shearing rigidity, Yield strength (tensile strength, etc.) can be secured. For this reason, the anchor 1 can be used for fixing the attachment immediately after the completion of construction. In particular, with conventional adhesive anchors, it was impossible until the curing time for the strength of the resin material to develop. Since it can be used immediately for fixing an attachment, the work time from the construction of the anchor to the fixation of the attachment can be greatly reduced.
The expansion part 21 and the rigid sleeve 4 contribute to the improvement of shear rigidity.
Since the metal extension portion 21 and the rigid sleeve 4 are higher in rigidity than the resin material 9, the deformation of the anchor 1 and the inside of the prepared hole 111 against bending and shearing force acting on the anchor 1 after the completion of construction. Displacement can be suppressed, and as a result, shear rigidity and bending strength are improved.
The shear rigidity and the bending strength can be improved as compared with the conventional adhesive anchor that is fixed only by the strength of the resin material even when only the expansion portion 21, that is, when the rigid sleeve 4 is not used.
When the rigid sleeve 4 is also used, the shearing force and bending stress acting on the anchor 1 are efficiently distributed and supported by the expansion portion 21 and the rigid sleeve 4, and the anchor 1 (specifically, the bolt 2) is supported. Deformation can be reliably suppressed, and high shear rigidity and bending strength can be obtained.

It is a front view which shows the adhesion type | system | group anchor of one Embodiment of this invention. It is a figure which shows the state which inserted the anchor of FIG. 1 in the pilot hole of the base material. It is a figure which shows the state which expanded the expansion part of the anchor of FIG. 2, and fixed the volt | bolt to the base material. It is a figure which shows the state which extrapolated the rigid sleeve to the anchor of FIG. It is a figure which shows the state which completed the insertion to the prepared hole of the rigid sleeve of FIG. It is a figure which shows the construction completion state of the anchor of FIG. It is a figure which shows the other shape of the cone of FIG. It is the figure which showed the cone of the other shape different from the cone of FIG. 1, FIG. It is a figure which shows the state which inserted the capsule with which the resin material was enclosed in the lower hole. It is a figure which shows the state which expanded the expansion part of the anchor using the electric tool, and fixed the volt | bolt to the base material. It is the figure which showed the other example of the rigid sleeve of FIG. It is the figure which showed the construction completion state of the anchor using the rigid sleeve of FIG. It is the figure which showed the rigid sleeve of the other shape different from the rigid sleeve of FIG. 4, FIG. It is the figure which showed the construction completion state of the anchor using the rigid sleeve of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Adhesive-type anchor, 2 ... Bolt, 21 ... Expansion part, 25 ... Marking 3, 31, 32 ... Cone, 4 ... Rigid sleeve, 41 ... Groove (excess resin discharge groove), 42, 43 ... Flange, 5 ... Resin material scattering prevention plate, 9 ... resin material, 91 ... capsule, 110 ... base material, 111 ... lower hole, 111a ... opening, 111b ... innermost part (hole bottom).

Claims (12)

An adhesive anchor, a bolt inserted into a pilot hole drilled in the base material;
A cone fitted into the inside of the expansion portion formed in a cylindrical shape at the tip of the bolt, and the expansion portion is expanded by driving the bolt into a cone in contact with the innermost part of the lower hole. An adhesive anchor that can be fixed to a base material. The bolt is made of a material equivalent to JIS G 4107, and by driving the bolt into a cone abutting on the innermost part of the lower hole, the extension part scrapes off the hole wall of the lower hole. 2. The adhesive anchor according to claim 1, wherein the adhesive anchor is expanded. 3. The adhesive anchor according to claim 1, wherein a tip shape of the cone on the deep hole side is formed in a substantially V shape. 3. The adhesive anchor according to claim 1, wherein a tip shape of the cone at the inner side of the lower hole is cut at an angle of approximately 45 degrees with respect to the axial direction from the side of the cone. The adhesive anchor according to claim 1, further comprising a rigid sleeve that is externally inserted into the bolt and inserted into the prepared hole. 6. An adhesive system according to claim 5, wherein a groove for allowing an anchoring resin material to pass in the axial direction of the rigid sleeve is formed on an outer peripheral surface and / or an inner peripheral surface of the rigid sleeve. anchor. The adhesive anchor according to claim 6, wherein the groove is formed in a continuous spiral shape that opens at both axial ends of the rigid sleeve. 6. The adhesive anchor according to claim 5, wherein a flange is formed at one end of the rigid sleeve. Grooves are formed on the outer peripheral surface and / or inner peripheral surface of the rigid sleeve to allow the resin material for anchor adhesion to pass in the axial direction of the rigid sleeve, and on the surface on the side in contact with the base material of the flange The adhesive anchor according to claim 8, wherein unevenness is provided. It is the construction method of the adhesion type | system | group anchor in any one of Claims 1-9, Comprising: The said adhesion type | system | group anchor is inserted in the pilot hole which put the resin material for anchor adhesion | attachment, The said bolt is made into the pilot hole innermost part. The expansion portion expanded by driving into the abutted cone is fixed to a base material, and the bolt, the cone, and the rigid sleeve are fixed to the base material integrally by curing the resin material. A method for constructing an adhesive anchor. A method for constructing an adhesive anchor according to any one of claims 1 or 3 to 9, wherein an electric tool capable of rotating and striking a prepared hole into which a container containing a resin material for anchor adhesion is inserted. Use to break and stir the container containing the resin material for bonding the anchor, insert the adhesive anchor, and rotate and hit the power tool on the cone with the bolt in contact with the innermost part of the lower hole. An adhesive system characterized in that the expanded portion expanded by driving in is fixed to a base material, and the bolt, the cone, and the rigid sleeve are integrally fixed to the base material by curing the resin material. Anchor construction method. After the expansion portion is expanded and fixed to the base material, before the resin material is cured, a rigid sleeve externally inserted into the bolt is inserted into the lower hole from the rear end side of the bolt protruding from the base material. The construction method of the adhesion type | system | group anchor of Claim 10 or 11 characterized by the above-mentioned.

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