JPH072827Y2 - Lightweight air bubble concrete panel - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a lightweight cellular concrete panel that constitutes a building wall or the like, and is particularly dry-mounted without exposing mounting hardware to the outside of the panel. The present invention relates to a lightweight cellular concrete panel that can be used.

(Prior Art) Conventionally, a device disclosed in Japanese Utility Model Publication No. 58-85008 is one of the devices relating to a lightweight cellular concrete panel that can be mounted by a dry method without exposing mounting hardware to the outside of the panel. is there. As shown in FIG. 5, this invention has a hole 1d formed in the small surface of the lightweight cellular concrete panel 1 and a metal fitting is attached to this hole.
11 is inserted and fixed to the flange surface 9 of the reinforcing steel material to support the lightweight cellular concrete panel 1, which is currently used mainly for mounting panels above and below the opening of a building. However, the hole 1d provided on the forefront surface of this lightweight cellular concrete panel is a circular hole, but its diameter is a straight hole that does not change to the inside, and the diameter does not change even at the forefront surface. .

(Problems to be solved by the invention) In a book wall constituted by using a conventional lightweight cellular concrete panel in which the hole provided in the forehead surface is a cylindrical shape whose hole diameter does not change from the back to the forehead piece, When a large external force (such as wind pressure) is applied to the panel that constitutes the book wall,
Since the panel tries to move against the mounting hardware 11 fixed to the flange surface 9 of the reinforcing steel material, a local stress acts particularly at the entrance of the hole 1d, and the panel breaks in lightweight cellular concrete. Therefore, such a conventional panel having a low mounting strength could be used in a low-rise floor with a small wind pressure, but could not be used in a high-rise floor panel with a high wind load.

The purpose of the present invention is to improve the mounting strength compared to the conventional panel,
It is to provide a lightweight cellular concrete panel that can be used as a panel for higher floors.

(Means for Solving the Problem) The lightweight cellular concrete panel of the present invention is a lightweight cellular concrete panel in which a circular hole for inserting a supporting steel material of the panel is provided in the panel edge surface in a direction perpendicular to the surface, In order to avoid a local stress applied to the panel, the diameter of the circular hole in the small portion of the panel is larger than the diameter inside the panel, and the diameter inside the panel is made constant. It is a panel.

(Function) In the lightweight cellular concrete panel of the present invention, the diameter of the hole becomes large at the small portion, and the hole at the back is a cylindrical hole whose hole diameter does not change, so it reaches into this hole at the back. If the mounting hardware is used, the portion that first comes into contact with the mounting hardware when an external force such as wind pressure is applied to the panel (that is, the portion where the local stress is concentrated) is located far away from the edge face. Therefore, the panel base material also exists in the lower portion in that portion, and the fracture strength when an external force is applied is increased accordingly.

(Example) An example of the shape of the holes in the lightweight cellular concrete panel of the present invention is shown in FIGS. 1 and 2. In this way, the hole 1c has a large diameter in the small-diameter portion, and has a columnar shape in which the hole diameter in the inner part does not change.

The formation of the circular hole in the small surface of the panel in the present invention is performed at a factory or a panel construction site. In particular, since the holes are circular, they can be easily drilled using a drill at the construction site, and the diameter of the circular holes can be increased in the panel edge portion.

Further, the number of holes provided on the front face of the panel may be one per one side of one panel or two as shown in FIG.

Next, a construction example of attaching the lightweight cellular concrete panel of the present invention as a wall will be described with reference to (1) and (2) of FIG.

The upper layer of lightweight cellular concrete panel (the lower part is shown as 1a) and the lower layer of lightweight cellular concrete panel (the upper part is shown as 1b) are the panels of the present invention. Circular holes 1c are formed at two positions symmetrical with respect to the center line.

Panel supporting steel rods 2a and 2b are fitted into the circular holes 1c, respectively, and the panel supporting steel rods are bent into an L shape at the fore edge of the panel, and the screwed end portion 2c projects from the rear surface of the panel. There is.

Further, a self-weight receiving plate 4 for mounting the lower portion 1a of the upper layer panel at the center of the fore edge is fixed to the receiving object 3 to which the beam steel frame 5a is fixed, and the lower portion of the upper layer panel is also fixed.
1a and a back surface of the upper portion 1b of the lower panel has a vertical surface 3c with which the end 2c protruding from the back surface of the panel supporting steel rods 2a and 2b is inserted into the vertical surface 3c. Hole
It has 3a and 3b.

The end portions 2c of the panel supporting steel rods 2a and 2b protruding from the rear surface of the panel are inserted into the insertion holes 3a and 3b, and are fastened by a nut 7 via a washer 6.

In order to have a structure in which a panel is attached as shown in FIG. 3 (2), that is, when the panel is installed, as shown in FIG. 3 (3), a circular hole 1c at the bottom of the panel 1 is provided. The panel supporting steel rod 2a is fitted in advance, and the rear surface of the lower portion 1a of the panel is brought into contact with the vertical surface 3c of the receiving object 3 fixed to the beam steel frame 5a from the out-of-plane direction, and at the same time, it is fitted into the loose hole of the receiving object 3. Insert the end 2c of the panel supporting steel rod 2a into the 3a, fasten it with the nut 7 through the washer 6, and place the panel lower part 1a on the weight receiving plate 4 fixed to the receiving object 3 to suspend the panel. The upper sling 8 is removed (steps from (3) in FIG. 3).

Next, the back surface of the panel upper portion 1b is brought into contact with the receiving object 3 on the upper floor from the out-of-plane direction (step from FIG. 3C), the panel upper portion 1b is raised in the in-plane direction, and after positioning (the third (Step from (3) in FIG. 3), the panel supporting steel rod 2b is fitted from above into the circular hole 1c of the panel upper portion 1b, and the end 2c is inserted into the notch 3b of the receiving object 3 through the washer 6. Fastening with the nut 7 completes the installation of the panel 1 (steps from FIG. 3 (3)).

Also, the lightweight cellular concrete panel of the present invention can be used as shown in FIG. That is, it is possible to attach the panel 1 to the reinforcing frame 9 used for the opening by using the mounting hardware 11 having a rod-shaped portion.

Further, the number of the supporting steel rods of the panel shown in FIG. 3 and the mounting hardware shown in FIG. 4 may be one or two per one side of the panel, and the number satisfying the required mounting strength may be set. .

Of course, the mounting strength is improved by changing the hole shape as in the panel of the present invention.
The same is true for books.

(Effect of the device) A circular hole provided in the small surface of the lightweight cellular concrete panel in a direction perpendicular to the surface has a diameter larger than the inside diameter of the panel in the small area, and the inside diameter of the panel changes. The non-cylindrical hole shows high resistance to the local stress applied to the panel, and the mounting strength (mounting strength due to the metal object having the panel bar-shaped part) that could only be used for a part of the lower floors until now is Improves by about 25%. Therefore, the panel of the present invention can be installed and used on the middle and high floors.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of the lightweight cellular concrete panel of the present invention, (1) is a perspective view, and (2) is a sectional view taken along the line AA ′ of (1). . FIG. 2 is a sectional view of another embodiment of the lightweight cellular concrete panel of the present invention. FIG. 3 is a view showing a mounting state using the panel of the present invention, (1) is a perspective view showing the mounting concept,
(2) is a sectional view showing a state after attachment, and (3) is an explanatory view of a construction procedure. FIG. 4 is a view showing another mounting state using the panel of the present invention, (1) is a perspective view showing the mounting concept, and (2) is a sectional view showing a state after mounting. is there. FIG. 5 is a view showing a mounting state using a conventional panel, (1) is a perspective view showing the mounting concept,
(2) is a cross-sectional view showing a state after attachment.

Claims (1)

[Scope of utility model registration request] 1. A lightweight cellular concrete panel having a circular hole for inserting a supporting steel material of the panel in a direction perpendicular to the surface of the small edge of the panel, in order to avoid local stress applied to the small portion, The lightweight cellular concrete panel is characterized in that the diameter in the small portion of the panel is larger than the diameter inside the panel, and the diameter inside the panel is constant.