JPH0414220B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an anchor used when attaching a building material to a base material, and in particular a method for constructing a so-called resin anchor that is fixed by the hardening action of a synthetic resin material, and the method therefor. The present invention relates to a heat-resistant member.

[Prior art and problems] Conventionally, when attaching various construction materials to base materials such as concrete and rock, construction is quick and easy, and uniform and stable adhesion strength can be obtained regardless of the base material or attachment location. Resin anchors are often used instead of carved anchors because of their excellent earthquake resistance and durability.

However, many resin anchors use synthetic resins such as polyester resin and epoxy resin, and in particular, in order to effectively utilize the adhesive strength of the synthetic resin, resin anchors require bolts formed on the base material during construction. It is necessary to make the hole diameter of the insertion hole larger than the outer diameter of the anchor bolt. Therefore, after construction, the synthetic resin located between the outer peripheral surface of the anchor bolt and the edge of the anchor bolt insertion hole has high heat resistance inside the base material because heat diffuses into the base material, but the synthetic resin near the surface, Particularly in areas where the synthetic resin is exposed, heat resistance is poor, and when considering the possibility of a fire,
There is a problem in that it is not appropriate to use resin anchors instead of conventional carved anchors in places where heat resistance is required.

[Object of the Invention] An object of the present invention is to provide a method for constructing an anchor and a heat-resistant member therefor, which solves such problems and enables the use of resin anchors in locations requiring heat resistance. .

[Structure of the Invention] The method for constructing an anchor according to the present invention is that when an anchor member is inserted into an insertion hole formed in a base material and fixed by the hardening action of a synthetic resin, the anchor member is made of a heat-resistant material and the outer diameter of the tip is A heat-resistant member, which has a base outer diameter approximately equal to the inner diameter of the insertion hole of the anchor member and larger than the inner diameter of the insertion hole, and has an insertion hole for the anchor member formed through the center thereof, is attached to the insertion hole anchor. inserting the tip into the member and fitting the tip between the anchor member and the insertion hole to bring the tip surface into contact with the uncured synthetic resin filled in the insertion hole;
The synthetic resin exposed in the gap is covered and sealed, and the heat-resistant member for this purpose is made of a heat-resistant material and the outer diameter of the tip is inserted into the insertion hole of the anchor member formed in the base material. It is characterized in that the outer diameter of the base portion is approximately the same and larger than the insertion hole, and the insertion hole for the anchor member is formed through the center.

[Example] The present invention will be described in detail below based on an example shown in the drawings.

FIGS. 1 to 5 show an embodiment of the anchor construction method of the present invention. First, as shown in FIG. Similar to the method for constructing an anchor, an insertion hole 2 for the anchor member is formed using a drilling tool such as a drill, and a synthetic resin 4 such as polyester and aggregate are placed inside a cylindrical glass container 3a in the insertion hole 2. 3b, and further the synthetic resin 4
A resin capsule 3 formed by filling a sealed glass tube 3c with a curing agent and a cap 3d at its mouth is inserted.

Note that the hole diameter of the insertion hole 2 is usually 10 to 10 mm smaller than the diameter of the anchor member to be fixed, since it is necessary to interpose an appropriate amount of synthetic resin between the hole wall and the outer peripheral surface of the anchor member to be fixed. Formed about 20% larger. Further, if the cap 3d is filled with foamable heat-resistant bond or the like (not shown), the heat-resistant effect is further increased.

Then, as shown in FIG. 2, the anchor member 5 is attached to a hammer drill 6 and rotated, the resin capsule 3 is broken in the insertion hole 2 and the contents are mixed, and then the hammer drill 6 is removed and the third In the state shown in the figure, before the synthetic resin 4 hardens, as shown in FIG. The outer diameter of the base 13 is approximately equal to the inner diameter of the insertion hole 2, and the insertion hole 10 of the anchor member 5 is formed in the center.
As shown in FIG. 4, a heat-resistant member 9 having a substantially inverted truncated conical shape is inserted through the insertion hole 10 into the anchor member 5 inserted into the insertion hole 2 from above, and the distal end surface is inserted downward, for example. A driving rod 1 made of reinforced synthetic resin or the like having a hole 11 opening in the
2 to insert the heat-resistant member 9 into the insertion hole 2 and the anchor member 5.
It is driven into the gap 7 formed by the outer circumferential surface 5a of the holder and is inserted.

At this time, the distal end surface of the heat-resistant member 9 is brought into contact with the synthetic resin 4 filled in the insertion hole 2, so that both are firmly fixed and can be prevented from falling out. It is preferable to adjust the length of the portion and the height of the surface of the synthetic resin 4, that is, the amount of filling, in advance.

According to this embodiment, the outer diameter of the tip 14 of the heat-resistant member 9 fitted into the gap 7 formed by the insertion hole 2 and the outer peripheral surface 5a of the anchor member 5 is approximately equal to the inner diameter of the insertion hole 2. Similarly, the outer diameter of the base 13 is larger than the inner diameter of the insertion hole 2, and the base 13 is fitted into the gap 7 and the large diameter base 13 is formed around the insertion hole 2 on the surface 1a of the base material 1. In order to reliably cover the gap 7, the synthetic resin 4a exposed in the gap 7 is quickly and completely covered and sealed.

Therefore, even if the atmosphere on the surface 1a of the base material 1 reaches several hundred degrees Celsius, the synthetic resin 4a existing near the surface 1a will not deteriorate, and the fixing strength of the anchor member 5 will not be as strong as in conventional resin anchors. It does not weaken significantly.

The heat-resistant member 9 inserted into the insertion hole 2 has a lower surface made of synthetic resin 4 filled in the insertion hole 2.
There is no need to worry about it falling off when it comes in contact with and is fixed. Further, the insertion hole 10 formed through the center of the heat-resistant member 9 is the insertion hole 10 when the anchor member 5 to be inserted is in the form of a bolt with a thread formed on the outer peripheral surface 5a as in this embodiment. When the anchor member 5 is made of reinforcing steel, a groove that fits into the thread is formed on the outer circumferential surface of the anchor member 5. It is preferable that stripes are formed (not shown).

FIG. 7 shows another embodiment of the heat-resistant member 9. In this embodiment, the base 13 of a cylindrical main body 16 having an outer diameter equal to the inner diameter of the insertion hole 2 is attached to the base material shown in FIG. 1. A flange 15 having a diameter larger than the inner diameter of the insertion hole 2 formed in the flange 1 is formed, and the forming material, method of use, and operation and effect thereof are almost the same as those of the embodiment shown in FIG. ,
Since the outer surface of the main body 16 that is inserted into the insertion hole 2 does not have a slope that widens toward the base end, the driving rod 12 used in the above embodiment is not required during construction, and the construction is easy. is easy.

[Effects of the Invention] The anchor construction method of the present invention is such that when the anchor member is inserted into the insertion hole formed in the base material and fixed by the hardening action of the synthetic resin, the anchor member protruding from the surface of the base material is fixed. The distance between the outer circumferential surface of the insertion hole and the hole edge of the insertion hole
This structure has a structure in which a heat-resistant member is inserted in between to cover and seal the exposed synthetic resin between the two, which improves the heat resistance of the resin anchor near the surface of the base material. Enables the use of resin anchors in places where In particular, since the heat-resistant member is inserted between the outer circumferential surface of the anchor member and the edge of the insertion hole, the heat-resistant effect is much greater than when the gap is simply covered with a heat-resistant member. Moreover, the construction method is also less difficult than conventional methods.

The heat-resistant member for the anchor construction method, which is another invention, is made of a heat-resistant material, and has a tip outer diameter that is approximately equal to the anchor member insertion hole, and a base outer diameter that is formed in the base material than the anchor member insertion hole. The anchor member is also formed to have a large diameter, and the insertion hole for the anchor member is formed through the center, so that it is only necessary to insert it into the insertion hole of the anchor member formed in the base material during construction. It is easy to work with, and the part of the synthetic resin filled in the insertion hole that is exposed on the surface of the base material can be quickly covered and sealed, preventing heat from reaching the synthetic resin even if the surface of the base material becomes extremely hot. It can be used in areas that require heat resistance. In addition, the tip inserted into the insertion hole is fixed to each other by the solidification of the synthetic resin filled in the insertion hole, allowing for quick installation and easy use on ceilings, etc., and prevents it from falling. There is no danger of Furthermore, the tip part is inserted into the insertion hole of the anchor member formed in the base material to close the gap between the anchor member and the insertion hole. It can also be used as is for materials. Of course, the structure is not complicated and is excellent in productivity and economy.

[Brief explanation of drawings]

Figures 1, 2, 3, 4 and 5
The figure is an explanatory diagram showing an embodiment of the anchor construction method according to the present invention, and FIGS. 6 and 7 are perspective views showing embodiments of a heat-resistant member for the anchor construction method according to the present invention. 1...Base material, 1a...Surface, 2...Insertion hole, 4
...Synthetic resin, 5...Anchor member, 5a...Outer peripheral surface, 7...Between, 9...Heat-resistant member, 10...Through hole, 13...Base. 14... Tip.

Claims (1)

[Claims] 1. When an anchor member is inserted into an insertion hole formed in a base material and fixed by the hardening action of a synthetic resin, the anchor member is made of a heat-resistant material and the outer diameter of the tip is equal to that of the insertion hole of the anchor member. A heat-resistant member having a base outer diameter approximately equal to the inner diameter and larger than the inner diameter of the insertion hole, and having an insertion hole for the anchor member formed through the center thereof, is inserted into the anchor member through the insertion hole. Inserting the distal end between the anchor member and the insertion hole, bringing the distal end surface into contact with the uncured synthetic resin filled in the insertion hole, and covering the synthetic resin exposed between the anchor member and the insertion hole; A construction method characterized by sealing. 2. It is made of a heat-resistant material, and the outer diameter of the tip is approximately equal to the insertion hole of the anchor member formed in the base material, and the outer diameter of the base is larger than the insertion hole, and the center has a hole through which the anchor member is inserted. A heat-resistant member characterized by having a hole formed therethrough.