JP2004353235A - Method of filling resin for anchor, and method of fixing anchor material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of filling resin for an anchor for positively and easily filling a prescribed quantity of even viscous resin into a bottom part of an anchor hole in a short time without producing bubbles and moreover leaving no undesired matter other than the resin in the anchor hole. <P>SOLUTION: In the method of filling resin for the anchor, the prescribed quantity of resin 100 for the anchor is filled in a cylindrical member 1 opened at both ends, and the cylindrical member 1 filled with the resin 100 is inserted in the anchor hole 2. Pressure is applied to the resin 100 in the cylindrical member 1 inserted in the anchor hole 2, toward the hole bottom 2a of the anchor hole 2, and the cylindrical member 1 is moved outward from the anchor hole 2. After the resin in the cylindrical member 1 is extruded into the anchor hole 2 from the inside of the cylindrical member 1, the cylindrical member 1 is removed from the anchor hole 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a method of filling an anchor resin into an anchor hole formed in a concrete structure, and a method of fixing an anchor material.
[0002]
[Prior art]
Conventionally, for example, when fixing an anchor material, for example, an anchor bolt to a concrete structure, a resin material, i.e., a resin material, in order to increase the anchoring force of the anchor bolt, in an anchor hole formed in the concrete structure An anchor resin is filled.
[0003]
However, when the anchor resin is simply filled with the injector from the opening of the anchor hole, air is sealed in the anchor hole by the highly viscous resin material filled in the opening of the anchor hole, that is, near the hole. Therefore, it was very difficult to fill the anchor resin bottom region without bubbles in the anchor resin.
[0004]
[Problems to be solved by the invention]
Therefore, a method has been proposed in which the length of the resin filling nozzle of the injector is increased, the nozzle is inserted to the bottom of the anchor hole, and the nozzle is gradually pulled out while filling the resin.
[0005]
However, this method has a problem that it takes a long time to inject the resin because the nozzle is long and thin. Further, this method has a problem that cavities and air bubbles are easily generated inside the nozzle due to the drawing speed of the nozzle, and it is difficult to confirm the amount of the injected resin.
[0006]
As another method, there is a method in which a resin is sealed in a capsule, the capsule is charged in an anchor hole, and then the capsule is crushed to fill the resin in the hole.
[0007]
However, this method has a problem that capsule fragments remain in the anchor hole. Further, according to this method, mixing is difficult with a high-viscosity epoxy resin of an in-situ mixing type, and there is a possibility that curing failure of the resin may occur.
[0008]
The present invention has been made in order to solve the above problems, the main object of the present invention is, even if a high-viscosity resin, in the bottom region of the anchor hole, reliably without bubbles, An object of the present invention is to provide a method for filling an anchor resin, which can be easily filled in a predetermined amount in a short time and without leaving any unnecessary matter other than the resin in the anchor hole.
[0009]
Another object of the present invention is to attach an anchor material such as an anchor bolt using an anchor hole prepared according to the method for filling an anchor resin, and to obtain a stable fixing force of the anchor material to a structure. An object of the present invention is to provide a method for fixing an anchor material.
[0010]
[Means for Solving the Problems]
The above object is achieved by a method for filling an anchor resin and a method for fixing an anchor material according to the present invention. In summary, according to one aspect of the present invention, (a) filling a cylindrical member having both ends opened with a predetermined amount of anchor resin;
(B) inserting the tubular member filled with the resin into an anchor hole;
(C) applying pressure to the resin in the cylindrical member inserted into the anchor hole in the direction toward the bottom of the anchor hole, and moving the cylindrical member outward from the anchor hole;
(D) removing the cylindrical member from the anchor hole after the resin in the cylindrical member is extruded from the cylindrical member into the anchor hole;
A method for filling a resin for an anchor, characterized by the following features:
[0011]
According to one embodiment of the present invention, the pressure on the resin in the cylindrical member is applied by a pressing member which is pressed in conformity with the hole of the cylindrical member, or is applied to the hole of the cylindrical member. Add with supplied compressed air.
[0012]
According to another embodiment of the present invention, the cylindrical member is a cylindrical member having an outer shape and an inner shape whose cross section is circular, elliptical, or polygonal.
[0013]
According to another embodiment of the present invention, the tubular member is formed of plastic, paper, or metal.
[0014]
According to another embodiment of the present invention, the resin is an epoxy resin, and preferably, the viscosity of the resin is 1000 mPa · s or more.
[0015]
According to another aspect of the present invention, the anchor hole filled with the anchor resin by the anchor resin filling method is made of metal, plastic, or an anchor bolt made of fiber-reinforced plastic, An anchor made of a reinforcing fiber bundle not impregnated with a resin, or an anchor material fixing method characterized by inserting and fixing an anchor made of an uncured reinforcing fiber bundle impregnated with a resin. Provided.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the method for filling the anchor resin and the method for fixing the anchor material according to the present invention will be described in more detail with reference to the drawings.
[0017]
In carrying out the method for filling the anchor resin of the present invention, first, as shown in FIG. 1A, a rigid tubular member 1 extending along the axial direction is prepared. The cylindrical member 1 has a hole 1a penetrating along the axial direction, and both ends are open. The tubular member 1 can be formed of plastic, paper, metal, or the like. For example, specifically, a polyethylene tube, a vinyl chloride tube, a multilayer paper tube, a steel tube, a copper tube, an aluminum tube, or the like is preferably used. Can be used.
[0018]
Further, the shape of the tubular member 1 preferably has the same cross-sectional outer shape as the cross-sectional shape of the anchor hole. However, since the cross-sectional shape of the anchor hole is usually circular, the outer shape is not used in this embodiment. The cross section of the shape (outer diameter portion) and the inner shape (inner diameter portion) is a circular cylindrical shape. However, in the present invention, the shape of the cylindrical member 1 is not limited to a cylindrical shape, and may be an elliptical cross section, or a polygonal cylindrical member having a quadrangle, a pentagon, or the like.
[0019]
As can be understood by referring also to FIG. 1 (b), the outer diameter of the cylindrical member 1 is Ds1, so that the cylindrical member 1 can be inserted into an anchor hole 2 formed in a concrete structure or the like. Assuming that the inner diameter is Ds2, the outer diameter Ds1 is slightly smaller than the inner diameter D of the anchor hole 2. When the inner diameter D of the anchor hole 2 is 10 to 100 mm, the outer diameter Ds1 of the tubular member 1 is smaller than the inner diameter D of the anchor hole by 0.5 to 10 mm.
[0020]
Further, assuming that the filling amount of the resin to be filled in the anchor hole 2 with respect to the anchor hole bottom 2a, that is, the resin filling length is La, the volume V of the filling resin in the anchor hole 2 is:
V = (π / 4) × D ² × La
It is. Therefore, the length Ls of the cylindrical member 1 is
V <(π / 4) × Ds2 2 × Ls
So that
[0021]
The length Ls of the tubular member 1 is set to various dimensions according to the anchor material used, for example, the anchor bolt.
[0022]
Next, an embodiment of the method for filling the anchor resin of the present invention will be described with reference to FIG.
[0023]
First, a cylindrical member 1 having the above configuration shown in FIG. 1 is prepared, and then, as shown in FIG. 2A, an anchor is provided in the cylindrical member 1 by using a resin injection means 3 such as a cartridge gun or an injection pump. Resin 100 is filled. At this time, it is preferable from the viewpoint of working efficiency that the inside of the tubular member 1 be filled with resin over the entire length so that the resin filling state can be visually confirmed at both ends of the tubular member 1. However, the present invention is not limited to this. For example, when the cylindrical member 1 is made of a transparent material or the like, the work by visual observation from the outer peripheral surface of the cylindrical member 1 is easy. It is also possible to fill only the area, and by measuring the weight of the tubular member 1, the filling amount of the resin in the tubular member 1 can be measured to a predetermined amount.
[0024]
As the resin filled in the tubular member 1, a resin conventionally used as an anchor resin is used, and for example, an epoxy resin is preferably used. The viscosity of the resin is preferably 1000 mPa · s or more, and the upper limit is preferably a putty (measurement with a viscometer is impossible). If the viscosity is less than 1000 mPa · s, there is a problem that the liquid drops during the injection and flows out.
[0025]
As described above, according to the present invention, the resin is filled into the cylindrical member 1 having both ends opened, so that the resin can be easily exhausted into the cylindrical member 1 when the resin is filled. In addition, the resin can be filled into the tubular member 1 reliably without bubbles, that is, by a predetermined amount in a short time. In the present embodiment, as shown in the drawing, resin is filled over the entire length of the tubular member 1.
[0026]
The cylindrical member 1 in which the predetermined amount of the resin 100 is densely filled as described above is inserted into the anchor hole 2 formed in a concrete structure or the like (FIG. 2B). The tubular member 1 has rigidity, and can be reliably inserted to the bottom 2 a of the anchor hole 2. Accordingly, one end 1b of the tubular member 1 is located at the bottom 2a of the anchor hole 2, while the other end, that is, the outer end 1c is exposed outside the anchor hole 2.
[0027]
Next, as shown in FIG. 2 (c), the pressure member 4 which is manually pressed is fitted and inserted into the hole 1a of the outer end 1c of the cylindrical member 1. For example, the piston rod serving as the pressure member 4 has an outer diameter approximately equal to the inner diameter of the hole 1a of the cylindrical member 1, and when pressed, causes the resin 100 in the cylindrical member 1 to move the resin hole 100 into the anchor hole bottom 2a. Press towards.
[0028]
Therefore, according to the present invention, the anchor resin can be reliably and easily injected into the bottom 2 a of the anchor hole 2.
[0029]
The resin 100 pressed to the anchor hole bottom 2a enters the circumferential edge of the inner end 1b of the tubular member 1 and moves the tubular member 1 rightward in FIG. It acts in the direction of pushing out from the hole 2. Of course, at the same time as pressing the pressing member 4, the operator may pull out the cylindrical member 1 to the outside by hand or using a tool.
[0030]
As shown in FIG. 2E, when the pressing member 4 is pushed in, the resin 100 in the tubular member 1 is entirely pushed out into the anchor hole 2. When the extrusion of the resin 100 from the tubular member 1 into the anchor hole 2 is completed, the pressing member 4 and the tubular member 1 are pulled out from the anchor hole 2. Accordingly, the resin 100 is filled in the anchor hole 2 by a predetermined amount with the resin injection length La.
[0031]
According to the present invention having the above structure, the pressing member 4 is pushed into the hole 1a of the tubular member 1 so that the resin is filled into the anchor hole bottom 2a. Acting on the circumferential edge, the cylindrical member 1 is pushed outward from the anchor hole 2. Therefore, as compared with the conventional resin filling method using a nozzle, the workability is extremely good, and furthermore, the resin 100 is easily and reliably inserted into the resin injection length with reference to the anchor hole bottom 2a without generating bubbles. The La region can be filled.
[0032]
In the description of the above embodiment, the resin 100 in the cylindrical member 1 was filled into the anchor hole by manually pressing the pressing member 4 such as a piston rod. The pressurizing member 4 may be pressed using a suitable pressurizing means. Alternatively, instead of the pressurizing member 4, compressed air from a compressed air source as a pressurizing means may be used. Even when the member 4 is supplied to the hole 1a of the outer end 1b of the tubular member 1, the same function and effect can be obtained.
[0033]
When the resin 100 is filled in the anchor hole 2 in a predetermined amount with the resin injection length La in this manner, then, as shown in FIG. An anchor material, for example, an anchor bolt 10 is pushed into the hole 2 and fixed.
[0034]
According to the present embodiment, the anchor resin 100 is further interposed between the outer periphery of the anchor bolt 10 and the anchor hole 2, so that a stable fixing force of the anchor bolt 10 to the anchor hole 2 can be obtained. it can.
[0035]
The anchor bolt 10 is made of metal, plastic, or fiber reinforced plastic. Further, instead of the anchor bolt 10, the anchor material 10 may be an anchor made of a reinforcing fiber bundle not impregnated with a resin, or may be impregnated with a resin, and the impregnated resin is not yet cured. An anchor made of an uncured reinforcing fiber bundle can also be used.
[0036]
Experimental example 1
In order to prove the effect of the method for filling an anchor resin constituted according to the present invention, a tubular member was produced with the following specifications, and the method of the present invention was carried out.
[0037]
Tube member 1
Material: Laminated paper tube outer diameter Ds1 20mm
Inner diameter Ds2 18mm
Length Ls 375mm
Anchor hole 2
Inner diameter D 22mm
Depth L 300mm
Resin injection length La 250mm
Anchor bolt 10
Diameter 20mm
Length 300mm
[0038]
In the present experimental example, the putty-shaped epoxy resin was filled into the cylindrical member 1 having the above-described configuration using an injection pump (trade name of “1 suction type caulking gun” manufactured by Otsuka Brush Co., Ltd.). The injection operation was easy, and the epoxy resin was densely packed in the cylindrical member 1.
[0039]
Next, the resin-filled cylindrical member 1 was inserted into the anchor hole 2, and thereafter, a rod having a diameter of 17 mm was fitted as a pressing member 4 to the outer end 1 c of the cylindrical member 1 and manually pressed.
[0040]
By manually pressing, the tubular member 1 was pushed out from the inside of the anchor hole 2.
[0041]
It was found that when the outward movement of the tubular member 1 stopped, the resin in the tubular member 1 was extruded into the anchor holes 2. Thereafter, the cylindrical member 1 and the pressing member 4 were pulled out from the inside of the anchor hole 2.
[0042]
The above-described series of operations is performed in one anchor hole 2 and is completed in 0.5 to 1 minute, which is about 3 to 5 times smaller than the conventional operation, and the workability is dramatically increased.
[0043]
Thus, the anchor bolt 10 was pushed into the anchor hole 2 filled with the resin and fixed. A stable fixing force was obtained.
[0044]
【The invention's effect】
As described above, the filling method of the anchor resin of the present invention fills a predetermined amount of the anchor resin into the cylindrical member having both ends opened, and inserts the resin-filled cylindrical member into the anchor hole. Along with applying pressure to the resin in the tubular member inserted into the anchor hole toward the bottom of the anchor hole, the tubular member is moved outward from the anchor hole, and the resin in the tubular member is removed from the inside of the tubular member. After being pushed into the anchor hole, the tubular member is removed from the anchor hole. Therefore, the present invention
(1) Since a cylindrical member having both open ends is used, it is possible to easily exhaust the resin into the cylindrical member when the resin is filled therein, and to fill the resin densely.
(2) Since a thin and long nozzle is not used for filling the resin as in the related art, the filling of the resin can be performed easily and in a short time.
(3) The tubular member can be securely inserted to the bottom of the anchor hole, and therefore, the resin can be reliably filled in the bottom of the anchor hole.
(4) The filling amount of the resin can be easily and reliably measured by visual observation in a state where the resin is filled in the cylindrical member, or by measuring the weight of the cylindrical member. It can be done reliably.
(5) Pressure is applied only to the resin in the cylindrical member from the outer end of the cylindrical member, and this resin is pushed out to the bottom of the anchor hole, so that it is easier than the conventional method of pulling out the filling nozzle by manual power. The resin can be reliably filled in the anchor bottom region without bubbles.
(6) The tubular member is removed from the anchor hole, and no unnecessary material other than the resin remains in the anchor hole.
Such an effect can be obtained.
[0045]
Further, according to the anchor material fixing method of the present invention using the anchor hole prepared according to the anchor resin filling method, a stable fixing force of the anchor material such as the anchor bolt to the structure can be obtained.
[Brief description of the drawings]
FIG. 1 (a) is a perspective view showing one embodiment of a tubular member used for a method of filling an anchor resin according to the present invention, and FIG. 1 (b) shows a tubular member inserted therein. It is sectional drawing explaining the anchor hole drilled in the concrete structure.
FIG. 2 is a view illustrating a construction step of a method for filling an anchor resin according to the present invention and a subsequent attachment step of an anchor bolt (anchor material).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylindrical member 2 Anchor hole 3 Resin injection means 4 Pressurizing member 10 Anchor bolt (anchor material)

Claims (8)

(A) filling a predetermined amount of anchor resin into a tubular member having both ends opened;
(B) inserting the tubular member filled with the resin into an anchor hole;
(C) applying pressure to the resin in the cylindrical member inserted into the anchor hole in the direction toward the bottom of the anchor hole, and moving the cylindrical member outward from the anchor hole;
(D) removing the cylindrical member from the anchor hole after the resin in the cylindrical member is extruded from the cylindrical member into the anchor hole;
A method for filling a resin for anchors, characterized in that: 2. The method according to claim 1, wherein the pressure applied to the resin in the cylindrical member is applied by a pressing member that is pressed in conformity with the hole of the cylindrical member. 2. The method according to claim 1, wherein the pressure on the resin in the cylindrical member is applied by compressed air supplied to a hole of the cylindrical member. 3. The method according to claim 1, wherein the outer and inner cross sections of the cylindrical member are circular, elliptical, or polygonal. The method according to any one of claims 1 to 4, wherein the tubular member is formed of plastic, paper, or metal. The method according to claim 1, wherein the resin is an epoxy resin. 7. The method according to claim 6, wherein the viscosity of the resin is 1000 mPa · s or more. Anchor bolts made of metal, plastic, or fiber-reinforced plastic in the anchor holes filled with the anchor resin by the method for filling anchor resin according to any one of claims 1 to 7. An anchor made by inserting an anchor made of a reinforcing fiber bundle not impregnated with a resin, or an anchor made of an uncured reinforcing fiber bundle impregnated with a resin, and fixing the anchor material. Method.

Images