JPH0784790B2 - Floor structure of lightweight cellular concrete panels - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to lightweight cellular concrete (hereinafter referred to as ALC), and more particularly to a floor structure using an ALC panel as a substrate.

(Prior Art) Conventionally, when an ALC panel is fixed to a structural frame of a building to form a floor structure, as shown in FIG.
A floor structure is adopted in which a synthetic resin emulsion is applied to the upper surface of the C panel 21 to form a base layer 22, and mortar is applied to the base layer 22 to form a mortar layer 23.

In such a floor structure, the underlayer 22 adheres the ALC panel 21 and the mortar layer 23, and prevents moisture from migrating to the ALC panel 21 side before the mortar solidifies, preventing a so-called dryout phenomenon, etc. Is exerting the action of.

(Problems to be Solved by the Invention) However, this floor structure has the following problems.

First, since the adhesion between the ALC panel 21 and the mortar layer 23 is great, if the mortar contracts during the drying process after construction,
The ALC panel 21 is affected by the contraction force and the mortar layer 23
It is easy to bend to the side, which may cause cracks in the ALC panel 21.

Secondly, since the ALC panel 21 and the mortar layer 23 are in contact with the structural body of the building in different shapes, and the ALC panel 21 and the mortar layer 23 are firmly adhered, the structure of the building When the skeleton is distorted due to an earthquake, wind pressure, or the like, the influence of the distortion may reach the ALC panel 21 and the mortar layer 23, and the vicinity of the attachment part of the ALC panel 21 to the structural skeleton may be damaged.

The object of the present invention is to solve the above problems, without causing cracks in the ALC panel in the drying process of the mortar layer, and also when the structural body is distorted due to an earthquake, wind pressure, etc. The purpose of the present invention is to provide a floor structure in which there is no risk of damage.

Structure of the Invention (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a floor structure of a lightweight cellular concrete panel in which a mortar layer is provided on a lightweight cellular concrete panel via a sheet layer, A means is adopted in which the sheet layer is made of a material that is substantially impermeable to moisture and has substantially no adhesiveness to the lightweight cellular concrete panel and the mortar layer.

(Operation) By adopting the above configuration, the sheet layer provided between the ALC panel and the mortar layer does not substantially permeate moisture from the mortar layer to the ALC panel side, and the sheet layer has the ALC panel and the mortar layer. Substantially does not adhere to
The LC panel and the mortar layer can slide sufficiently.

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, the panel used for the floor structure in the present embodiment is one in which a mortar layer 3 is provided on an ALC panel 1 with a sheet layer 2 which is substantially impermeable to water. The sheet layer 2 is a resin sheet that does not substantially permeate moisture therein into the ALC panel 1 side when the mortar layer 3 dries, and is, for example, an ABS resin sheet, a polyamide sheet,
Examples thereof include polyvinyl chloride sheets, acrylic resin sheets, and polyolefin sheets such as polyethylene.
Further, the sheet layer 2 has substantially no adhesiveness to the ALC panel 1 and the mortar layer 3, and in the case of a floor structure, there is no structural problem even if it does not have adhesiveness. Further, the thickness of the sheet layer 2 is appropriately set according to the working conditions such as the thickness of the mortar layer 3.

Next, a method of attaching such a panel to a structural frame of a building to form a floor structure will be described.

As shown in FIG. 2, a steel material 5 having a U-shaped cross section is welded onto an H-shaped steel frame body 4 as a structural body. On the steel material 5, joint rebar 6 is in the longitudinal direction (left and right direction in FIG. 2).
The end of the ALC panel 1 inserted in the is placed. The joint reinforcement 6 intersects with the upper portion of the waste plate 7 which is erected and fixed on the steel material 5 by welding.

A mounting member 8 having an L-shaped cross section is fixed on the steel frame body 4 by welding. A plate-shaped mounting plate 9 is welded and fixed to the outside of the erected portion of the mounting member 8 (on the left side in FIG. 2), and the tip of the mounting plate 9 is vertically moved to the center of the ALC panel 10 as a wall material. The joint rebar 11 embedded in the direction is fixed by welding.

Further, the outer surface of the ALC panel 10 (on the left side in FIG. 2) has a recess 1
0a is provided, a hook bolt 12 is inserted from the recess 10a through the ALC panel 10, and the hook-shaped tip portion is welded and fixed to the inner surface side (right side in FIG. 2) of the mounting member 8 and the other end. The parts are fixed by nuts 15. In this state, the recess 10a is filled with mortar 13 and the hook bolts 12 are embedded so that the recesses 10a do not protrude to the outer surface of the ALC panel 10.

The portion surrounded by the left end surface of the ALC panel 1, the steel material 5, the upper surface of the mounting member 8 and the inner surface of the ALC panel 10 is filled with mortar 14 to the same height as the upper surface of the ALC panel 1. The sheet layer 2 is coated on the mortar 14 and the ALC panel 1, and the mortar 3 is placed on the sheet layer 2.
Has been applied. In this way, the floor structure of the ALC panel 1 is formed.

The operation and effect of the floor structure of the ALC panel 1 configured as above will be described.

As shown in FIG. 2, since the sheet layer 2 which is substantially water-impermeable and has no adhesiveness is interposed between the ALC panel 1 and the mortar layer 3, the mortar layer 3 is applied after the mortar layer 3 is applied. Even if the mortar layer 3 shrinks after drying, the space between the mortar layer 3 and the sheet layer 2 and between the sheet layer 2 and the ALC panel 1
Since there is no adhesiveness between the
The C panel 1 does not bend or crack. Further, the sheet layer 2 is also interposed between the mortar 14 and the mortar layer 3 which are filled in the end portion of the ALC panel 1, and slides between the mortar layer 3 and the sheet layer 2 and between the sheet layer 2 and the mortar 14. Therefore, even if the mortar is dried and the mortar layer 3 contracts, the joint rebar 6 and the waste plate 7 in the mortar 14 are not adversely affected.

Next, in the ALC panel 1, the joint rebar 6 inside is mortar 1
It is fixed on the steel material 5 by being fixed to the heat plate 7 in the inside. On the other hand, the mortar layer 3 has its end (left end in FIG. 2) fixed to the ALC panel 10. Therefore, the steel frame body 4, which is the structural frame of the building, causes an earthquake,
When distorted by wind pressure, etc., the distortion is transmitted to the ALC panel 1 through the steel material 5, the waste plate 7, and the joint rebar 6, and to the mortar layer 3, the mounting member 8, the mounting plate 9, and the joint rebar.
11. Transmitted separately via ALC panel 10. However, as described above, the ALC panel 1 and the mortar layer 3 are not the sheet layer 2
The strain is relatively slidable via the
The mortar of the ALC panel 1, which is the attachment part of the ALC panel 1, absorbed by the relative movement of the panel 1 and the mortar layer 3.
There is no possibility that the contact portion with 14 will be damaged, and there is no possibility that the ALC panel 10 joined to the end of the mortar layer 3 will be damaged.

In addition, since the sheet layer 2 of this embodiment is substantially impermeable to water, a dry-out phenomenon is prevented when the mortar of the mortar layer 3 is dried, and the water content is ALC panel 1.
There is no transition to.

As described above, according to the floor structure of the ALC panel 1 of the present embodiment, there is no risk of cracks occurring in the ALC panel 1 during the drying process of the mortar of the mortar layer 3. Further, even when the steel frame body 4 is distorted due to an earthquake or wind pressure, there is no risk of damage in the vicinity of the mounting portion of the ALC panel 1 to the steel frame body 4.

The present invention is not limited to the above embodiment, but may be configured as follows.

(1) The mounting structure of the ALC panel 1 to the steel frame body 4 is
In addition to the mounting structure of the above embodiment, a structure such as a structure in which the joint rebar 6 and the waste plate 7 are connected in the ALC panel 1 may be adopted. Also in this structure, since the water-impermeable and non-adhesive sheet layer 2 is interposed between the ALC panel 1 and the mortar layer 3, the same operation and effect as those of the above-described embodiment can be obtained.

(2) As the sheet layer 2 used in the present invention, the sheet formed in advance in the above-mentioned embodiment is usually used. In addition to this, a coating such as a hydrocarbon coating is coated with a water-impermeable coating. It is also possible to form the sheet layer 2. Further, it is also possible to use a sheet-shaped product by applying a resin solution as a raw material of the sheet layer 2 onto the ALC panel 1 by means such as coating or spraying and drying. The so-called strippable paint corresponds to this.

Effects of the Invention According to the floor structure of the ALC panel of the present invention, there is no risk of cracks occurring in the ALC panel in the drying process of the mortar layer, and the structural body is also ALC for the structural body when it is distorted by an earthquake, wind pressure, or the like. It has an excellent effect that there is no possibility of damaging the panel mounting portion.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a joint structure between an ALC panel and a mortar layer in an embodiment of the present invention, FIG. 2 is a sectional view showing a mounting structure of an ALC panel to a structural body, and FIG. FIG. 3 is a partially cutaway perspective view showing the joint structure between the ALC panel and the mortar layer. 1 ... ALC panel, 2 ... sheet layer, 3 ... mortar layer

Claims (1)

[Claims] 1. A floor structure of a lightweight cellular concrete panel comprising a mortar layer (3) provided on a lightweight cellular concrete panel (1) via a sheet layer (2), wherein the sheet layer (2) contains substantially no moisture. A floor structure of a lightweight cellular concrete panel, which is made of a material which is impermeable and has substantially no adhesiveness to the lightweight cellular concrete panel (1) and the mortar layer (3).