JP2732142B2 - Lightweight cellular concrete member, method of manufacturing and mounting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a lightweight cellular concrete member such as a panel or a corner member in which a mounting anchor is buried (hereinafter, lightweight cellular concrete is referred to as ALC), and the ALC. The present invention relates to a method for manufacturing a member and a method for mounting the ALC member on a structural body.

[Prior Art] Many ALC panels have embedded mounting anchors provided with female screw holes, and externally mounting bolts are screwed into the female screw holes of the mounting anchor, thereby connecting the ALC panel to the structural frame. To be mounted on.

However, if ALC flows into the female screw hole of the mounting anchor during the manufacture of the ALC panel, it is necessary to remove the ALC that has flowed in after the manufacture of the ALC panel, which is very troublesome.

Therefore, the following device is known as a device for preventing the inflow of ALC.

(1) A porous rubber-like elastic material that does not melt due to heat accompanying autoclave curing is attached to the end surface of the mounting anchor on which the mounting bolt is screwed so as to close the female screw hole, and the mounting anchor is attached. Buried ALC panel (Japanese Utility Model Publication No. 60-179716).

(2) A mounting bolt is screwed into a plate-shaped mounting anchor, and a tip end portion of the mounting bolt is made to protrude beyond a predetermined length from the mounting anchor. ALC panel buried (Showa 62
-1993009).

[Problems to be Solved by the Invention] However, when the rubber-like elastic material is attached in the above (1), ALC may permeate into the female screw hole due to variation in the attachment. Further, when the mounting anchor is exposed by making a counterbore in the ALC panel, the rubber-like elastic material is discarded, which is wasteful. Furthermore, at the time of mounting on the structural body, it is necessary to prepare mounting bolts suitable for the ALC panel separately from the ALC panel, and it is troublesome to search for this mounting bolt at the construction site.

Further, in the screwing of the mounting bolts in the above (2), since the mounting anchors are plate-shaped, and the mounting bolts are buried in a state where the tip portions of the mounting bolts are protruded beyond the mounting anchors by a predetermined length or more. ALC adhered to the tip of the mounting bolt, and in order to prevent this, it was necessary to apply a release agent or the like to the tip.

An object of the present invention is to solve the above-described problems, to prevent ALC from infiltrating into a female-threaded long hole of a mounting anchor and to prevent ALC from attaching to a male screw portion of a mounting bolt, and to provide a structural frame. A new ALC member that can use the mounting bolt screwed to the mounting anchor as it is at the time of mounting work to the mounting anchor and can efficiently perform preparation and construction work, and a method of manufacturing and mounting the same. Is to do.

[Means for Solving the Problems] In order to achieve the above object, the present invention employs the following means.

The ALC member according to claim 1, wherein a mounting anchor having a long hole with a female thread, and a mounting bolt having substantially the entire length of a male screw portion screwed into the long hole with a female thread are embedded together. did.

In the method for manufacturing an ALC member according to claim 2, the mounting anchor having the long hole with the female thread and the mounting bolt having substantially the entire length of the male screw portion screwed into the long hole with the female thread are buried together. And a step of curing the ALC member under high pressure and high temperature steam.

According to a third aspect of the present invention, there is provided a method for manufacturing an ALC member, wherein the head of the mounting bolt is brought into contact with the screw-in side end face of the mounting anchor.

According to a fourth aspect of the present invention, there is provided a method of manufacturing an ALC member according to the second aspect, wherein the non-threaded end surface of the mounting anchor is hermetically closed so as to close the long hole with the female thread. This sealing may be performed by a method of bonding a separate member or a method of forming a mounting anchor with a bottom.

According to a fifth aspect of the present invention, in the manufacturing method of the second aspect, before forming the ALC member, the head of the mounting bolt is coated with an ALC adhesion preventing material.

According to a sixth aspect of the present invention, there is provided the method of manufacturing an ALC member according to the fifth aspect, wherein the ALC adhesion preventing material has a property of being heated and melted in a temperature range of 100 to 180 ° C.

The mounting method of an ALC member according to claim 7, wherein the mounting anchor having a female screwed long hole and the mounting bolt having substantially the entire length of the male screw portion screwed into the female screwed hole are buried together. A step of taking out the mounting bolt from a counterbore formed in the mounting bolt burying position of the ALC member, and a step of mounting the ALC member to a structural body using the mounting bolt. Including the configuration.

[Operation] According to the ALC member according to the first aspect, by taking out the mounting bolt screwed into the long hole with the female thread of the mounting anchor, it can be used for mounting the ALC member to the structural frame. . Also, ALC does not adhere to the long holes with female threads of the mounting anchors or the male threads of the mounting bolts.

According to the manufacturing method of the ALC member according to the second aspect, since substantially the entire length of the male screw portion of the mounting bolt is screwed into the female threaded slot of the mounting anchor, the AL is inserted into the female threaded slot.
Almost no C seepage or ALC adheres to the male thread of the mounting bolt.

According to the manufacturing method of the ALC member according to the third aspect, the head of the mounting bolt is brought into contact with the screw-side end face of the mounting anchor, so that ALC penetrates from the screw-side end face into the long hole with the female thread. Is even less.

According to the manufacturing method of the ALC member according to the fourth aspect, since the end surface on the anti-thread side of the mounting anchor is sealed so as to close the elongated hole with the female thread, the length with the internal thread from the end surface on the anti-thread side. Further penetration of ALC into the holes is eliminated.

According to the manufacturing method of the ALC member according to the fifth aspect, the head of the mounting bolt is coated with the ALC adhesion preventing material before the molding of the ALC member, so that the ALC does not adhere to the head.

According to the method for manufacturing an ALC member according to the sixth aspect, the ALC adhesion preventing material is heated and melted in the curing step, so that the periphery of the head of the mounting bolt is hollow.

According to the mounting method of the ALC member according to the seventh aspect, it is not necessary to separately prepare or search for the mounting bolt as in the related art.

[Examples] Hereinafter, examples embodying the present invention will be described with reference to FIGS.
This will be described with reference to FIG.

FIG. 2 shows the completed ALC panel 1, in which reinforcing bars 2, mounting anchors 3, mounting bolts 7 and the like are embedded. That is, the reinforcing bars 2 are formed in a cage shape by the horizontal bars and the vertical bars, and are buried near both sides of the ALC panel 1. The reinforcing bar 2 has an attachment anchor 3 composed of a support fitting 4 having an L-shaped cross section and a long nut 5 welded and fixed thereto.
However, the support nut 4 is fixed by welding, and the long nut 5 is AL
The C panel 1 is arranged to extend in the thickness direction. Approximately the entire length of the male screw portion 8 of the mounting bolt 7 is screwed into the long hole 6 with a female thread of the long nut 5, and the head 9 of the mounting bolt 7 is in contact with the screw-side end surface of the long nut 5. ing. The periphery of the head 9 of the mounting bolt 7 is a cavity 10 formed by heating and melting an ALC adhesion preventing material to be described later.
The thickness of the ALC between 10 and the back of the panel is typically between 2 and 12 mm. On the other hand, a lid 11 is adhered to the end face of the long nut 5 on the anti-screw-in side, and hermetically closed so as to close the long hole 6 with the female thread. The material of the lid 11 may be any material as long as ALC does not penetrate.

The ALC panel 1 can be manufactured by, for example, the following steps.

(1) The head 9 of the mounting bolt 7 is coated with an ALC anti-adhesion material 12 having the property of being heated and melted in a temperature range of 100 to 180 ° C. Examples of the material include independently foamed rubber and synthetic resin.

(2) The mounting anchor 3 is assembled, the substantially entire length of the male screw portion 8 of the mounting bolt 7 is screwed into the long hole 6 with the female thread of the long nut 5, and the head 9 of the mounting bolt 7 is screwed into the screw-in end face. And the lid 11 is adhered to the end face on the anti-screw-in side. The mounting anchor 3 is attached to the reinforcing bar 2 formed in a cage shape.
Is fixed by welding.

(3) A plurality of the reinforcing bars 2 are set side by side on a mold (not shown), and a semi-hardened state in which the reinforcing bars 2, the mounting anchors 3, the mounting bolts 7 and the like are embedded by injecting the ALC raw material slurry. ALC green cake. At this time, substantially the entire length of the male screw portion 8 of the mounting bolt 7 is screwed into the long hole 6 with the female thread of the long nut 5 as described above, and the head 9 of the mounting bolt 7 abuts on the screw-in side end surface. Also, since the end surface on the anti-screw side is closed by the lid 11, the long hole 6
ALC penetrates into the thread, and A
LC can be prevented from adhering. Also,
Since the head 9 of the mounting bolt 7 is covered with the ALC adhesion preventing material 12, ALC does not adhere to the head 9.

(4) The ALC green cake is cut into the semi-cured ALC panel 1 as shown in FIG.

(5) The ALC panel 1 is placed in an autoclave (not shown) and subjected to high-pressure and high-temperature steam curing, so that the ALC panel 1
Is fully cured. The temperature during this curing is, for example, about 180
In this case, the ALC adhesion preventing material 12 is heated and melted to form the cavity 10, and the ALC panel 1 as shown in FIG. 2 is formed. As shown by the chain line in FIG. 2, by drilling the ALC at the buried position of the mounting bolt 7 (that is, the ALC between the cavity 10 and the back of the panel) at the factory,
The counterbore 13 may be formed. This mounting bolt 7
The embedding position can be easily searched for because the tapping sound differs depending on the presence of the cavity 10.

The ALC panel 1 can be attached to a structural body by, for example, the following construction method.

(1) If the counterbore 13 is not formed in the factory, the counterbore 13 is formed at the construction site. Then, as shown in FIG. 3, the mounting bolt 7 is screwed out and taken out.

(2) As shown in FIG. 4, a lightning bolt-shaped mounting plate 14 is applied to the back of the ALC panel 1, and the mounting bolts 7 are passed through the mounting plate 14 so that the long holes 6 of the long nuts 5 with female threads are formed. Into the screw. Then, this mounting plate 14 is welded and fixed to a steel beam 15 as a structural frame by a through angle 16.
And tighten the mounting bolt 7.

According to the above mounting method, the mounting bolt 7 screwed to the mounting anchor 3 can be used as it is, and there is no need to separately prepare or search for the mounting bolt as in the related art. Construction work can be performed efficiently.

Note that the present invention is not limited to the configuration of the above-described embodiment, and can be arbitrarily changed and embodied without departing from the spirit of the present invention.

[Effects of the Invention] Since the present invention is configured as described above, it has the following excellent effects.

According to the ALC member described in claim 1, the mounting bolt screwed to the mounting anchor can be taken out and used for mounting the ALC member to the structural frame. Since there is no need to prepare or search, construction preparation and construction work can be performed efficiently. Also, since ALC is not attached to the long hole with the female screw of the mounting anchor or the male screw of the mounting bolt, there is no need to clean them.

According to the manufacturing method of the ALC member according to the second aspect, it is possible to prevent the ALC from penetrating into the long hole with the female thread and from attaching the ALC to the male screw portion of the mounting bolt.

According to the method of manufacturing the ALC member according to the third aspect, it is possible to more reliably prevent the penetration of ALC from the screw-in side end face into the long hole with the female thread.

According to the method for manufacturing an ALC member according to the fourth aspect, it is possible to more reliably prevent ALC from penetrating from the end face on the anti-screw side to the long hole with the female thread.

According to the method of manufacturing an ALC member according to the fifth aspect, it is possible to prevent ALC from adhering to the head of the mounting bolt.

According to the manufacturing method of the ALC member according to the sixth aspect, the periphery of the head of the mounting bolt can be hollowed in the curing step.

According to the ALC member mounting method according to the seventh aspect, since it is not necessary to separately prepare or search for mounting bolts as in the related art, it is possible to efficiently perform the preparation for construction and the construction work. Also, since ALC is not attached to the long hole with the female screw of the mounting anchor or the male screw of the mounting bolt, there is no need to clean them.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an ALC panel embodying the present invention after molding, FIG. 2 is a cross-sectional view of the ALC panel after curing, and FIG. 3 is a cross-sectional view of a state where mounting bolts are taken out of the ALC panel. FIG. 4 is a sectional view showing a state where the ALC panel is attached to a steel beam. 1 ... ALC panel, 3 ... Mounting anchor, 4 ... Support bracket, 5 ... Long nut, 6 ... Long hole with female thread, 7 ... Mounting bolt, 8 ... Male thread, 9 ... Head Part, 11 ... Lid, 12: ALC anti-adhesion material, 13: Counterbore, 15: Steel beam as structural frame.

Claims (7)

(57) [Claims] 1. A mounting anchor (3) having a female threaded slot (6) and a mounting bolt (7) having substantially the entire length of a male threaded portion (8) screwed into said female threaded slot (6). ) Are lightweight cellular concrete members embedded together. 2. A mounting anchor (3) having a female threaded slot (6) and a mounting bolt (7) having substantially the entire length of a male threaded portion (8) screwed into said female threaded slot (6). A) forming a lightweight cellular concrete member (1) so as to be embedded together; and a step of curing the lightweight cellular concrete member (1) under high pressure and high temperature steam. 3. A method for manufacturing a lightweight cellular concrete member according to claim 2, wherein the head (9) of the mounting bolt (7) is brought into contact with the screw-in end surface of the mounting anchor (3). 4. The method for manufacturing a lightweight cellular concrete member according to claim 2, wherein the end surface of the mounting anchor (3) on the anti-screw side is closed so as to close the long hole (6) with a female thread. 5. The lightweight cellular concrete according to claim 2, wherein the head (9) of the mounting bolt (7) is coated with a lightweight cellular concrete adhesion preventing material (12) before the lightweight cellular concrete member (1) is formed. Manufacturing method of the member. 6. The lightweight cellular concrete adhesion preventing material (12) is
The method for producing a lightweight cellular concrete member according to claim 5, which has a characteristic of being heated and melted in a temperature range of 100 to 180 ° C. 7. A mounting anchor (3) having a long slot (6) with a female thread, and a mounting bolt (7) having substantially the entire length of a male thread (8) screwed into the long slot (6) with a female thread. ) Are used to embed the lightweight bolted concrete member (1) through the counterbore (13) formed in the lightweight cellular concrete member (1) at the mounting bolt burying position. And removing the lightweight cellular concrete member (1) by using the mounting bolt (7).
Mounting a lightweight cellular concrete member, comprising the steps of: