JPH0452349A - Lightweight cellular concrete slab structure for wooden framework - Google Patents

Abstract

PURPOSE:To facilitate the construction work and shorten the construction period and reduce the cost of a lightweight aerated concrecte slab structure by fitting a plurality of ALC panels into a wooden framework, and supporting both end portions of the lower face of each ALC panel using support angles, and applying to the four sides of the inner periphery of the wooden framework the header face of each ALC panel which is opposite to the four sides. CONSTITUTION:A plurality of wooden girders 2 are roughly horizontally fitted between a plurality of wooden continuous struts 1. A plurality of wooden beams 3 perpendicular to the girders 2 are roughly horizontally joined to the girders 2 so as to form a rectangular wooden framework 4 having a plurality of rectangular spaces therein. A plurality of ALC panels 5 are fitted into the wooden framework 4 and both end portions of the lower face of each ALC panel 5 are supported by support angles 6. The header face of each ALC panel 5 opposite to the four sides of the inner periphery of the wooden framework 4 is applied to the four sides directly or indirectly via a filler 7.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides lightweight aerated concrete panels (hereinafter referred to as ALC This relates to a slab structure constructed using panels (referred to as panels). Note that in this specification, the term "horizontal site" refers to a vertical site such as a wall, and includes not only a completely horizontal site but also a site that is somewhat similar to the horizontal site.

[Prior Art] As shown in FIGS. 3 and 4, the floor structure of a building based on the conventional wooden frame construction method consists of wooden shafts constructed in a rectangular shape with large wooden beams 21 and small beams 22. set 23 and the wooden frame 2
3, and a plurality of wooden floorboards 25 laid on the joists 24.

In addition, as shown in FIG. 5, a combination of ALC panels with the above-mentioned floor structure includes a wooden frame 23 constructed in a rectangular shape with wooden beams 21, and a wooden frame 23 assembled on the wooden frame 23. A floor structure has also been proposed that consists of a plurality of wooden joists 24, a plurality of floorboards 25 laid on the joists 24, and an ALC panel 26 fixed to the floorboards 25. (Utility Model Application No. 61-117827).

[Problems to be solved by the invention] However, the floor structures based on the above two wooden frame construction methods have the following problems:
There were the following problems (1) and (2).

(1) Both floor structures require multiple joists 24,
Assembling them requires special skills, expertise, and a great deal of effort, which, combined with the recent labor shortage, has led to longer construction times and higher costs. Furthermore, since a large number of small pieces of wood called the joists 24 are used, fire resistance is also reduced.

(2) In either floor structure, the wooden framework 23 exclusively bears the shearing force in the horizontal plane generated by external forces such as seismic force and wind pressure applied to the building.

The floor plate 25 and the ALC panel 26 bear only the load and do not bear the shearing force in the horizontal plane. In particular, although the ALC panel 26 has a considerable in-plane shear strength, this was wasted without being effectively utilized. Therefore, to improve the performance against shear forces in the horizontal plane.

Use expensive beams 21 and 22 with large cross-sectional areas, or
It was necessary to strengthen the assembly structure of 1.22.

Therefore, the first possible solution to the above problem (1) is to convert the ALC floor slab structure used in steel-framed buildings to the floor structure of wooden buildings. That is, as shown in FIG. 6, a typical steel-framed ALC floor slab structure includes a steel frame 28 formed in a rectangular shape by steel beams 27, and a steel frame 28 placed on top of the steel frame 28. It consists of an ALC panel 26, and the ALC
Since both ends of the panel 26 are supported by the steel beams 27, no joists are required. Then, the joint reinforcing bars 30 are passed through the two mounting plates welded and fixed to the steel beam 27, and the joint reinforcing bars 30
If you fill the joint with mortar 31 so as to fill it,
Since the ALC panel 26 can be fixed, construction can be easily performed.

However, even if this steel-framed ALC floor is applied to the floor structure of a slough structure building, the above-mentioned problem M(2) will not be solved. This is because, even in this ALC floor slab structure, the steel frame 28 bears most of the shearing force in the horizontal plane generated by the external force. And A.L.C.
Since the panel 26 only had to bear the live load,
The mounting structure of the ALC panel 26 also does not effectively transmit the horizontal shear force applied to the steel frame 28 to the ALC panel 26. Therefore, it is not possible to effectively utilize the in-plane shear strength of the ALC panel 26, and the ALC
Local rupture may occur in the mounting area of the ALC panel 26 (near the mounting plate 29) before the in-plane shear strength of the panel 26 works, making it unsuitable for a floor structure that is strong against horizontal shear forces. Ta. Furthermore, since the ALC panel 26 is placed on the steel frame 28, there is also the problem that the floor surface becomes high.

The above problem also applies to horizontal parts other than floor structures, such as roofs.

The purpose of the present invention is to eliminate the need for floor joists, simplify construction, shorten the construction period, and reduce costs, and greatly improve performance against shear forces in the horizontal plane with a simple structure. To provide a novel ALC slab structure for a wooden frame capable of keeping the height of horizontal parts such as surfaces and roof surfaces low, increasing rigidity and sound insulation, and improving fire resistance.

[Means for Solving the Problems] In order to achieve the above object, the ALC slab structure for the wooden frame of the present invention is assembled in a rectangular shape with wooden beams at horizontal parts such as the roof and floor of a building. The wooden frame includes a wooden frame, a plurality of ALC panels fitted into a rectangular space on the inner periphery of the wooden frame, and support means for supporting both ends of the lower surface of these ALC panels. The edge surfaces of the ALC panel facing the four inner circumferential surfaces of the set were configured to be in contact with the four surfaces directly or indirectly through a filler.

[Function] According to this ALC slab structure for a wooden frame, multiple ALC panels are fitted into the wooden frame without the need for joists as in conventional wooden frame construction methods, and both ends of the bottom surface of these ALC panels are fitted into the wooden frame. It is constructed using a simple process of supporting the ALC panel with support ankles, and bringing the face of the ALC panel that faces the four inner surfaces of the wooden frame into contact with these four faces directly or indirectly through a filler. can do. In other words, its construction does not require special skills, expertise, or a great deal of effort.

Regarding the horizontal shearing force generated by external forces such as seismic force and wind pressure applied to the building, instead of having the burden only on the wooden frame as in the past, the ALC is fitted into the inner circumference of the wooden frame. Since the load is effectively transmitted to the panel by the surface contact, the in-plane shear strength of the ALC panel can be effectively used.

In addition, since the ALC panel is fitted into the inner circumference of the wooden frame,
The floor height can be kept low.

Furthermore, since ALC panels are used, the rigidity and sound insulation properties of the floor are increased compared to when wooden floorboards are used. In addition, since ALC panels are used, small pieces of wood such as joists are not used, and fire resistance is excellent.

[Example] Hereinafter, an example in which the present invention is embodied in an ALC slab structure for a wooden frame of a floor will be described with reference to FIGS. 1 and 2.

Between the plurality of wooden pillars 1 erected, a plurality of wooden girders 2 are assembled approximately horizontally so as to be lined up in parallel at intervals of, for example, 2.7 to 3.6 m. ing. A plurality of wooden beams 3 orthogonally intersecting with the large beams 2 are assembled approximately horizontally to these large beams 2 so as to be arranged in parallel at intervals of, for example, 1.8 m. These large beams 2 and small beams 3 constitute a rectangular wooden framework 4 having a plurality of rectangular spaces.

When viewed from each rectangular space of the wooden framework 4, a support angle 6 made of steel as a means for supporting the ALC panel 5 is attached to the small beam 3 at a slightly sunken location on the inner surface of each small beam 3.
It is disposed substantially horizontally over substantially its entire length and is bolted to the small beam 3. In each rectangular space on the inner periphery of the wooden framework 4, a plurality of ALC panels 5 are inserted,
Both ends of the lower surface of these ALC panels 5 are supported by the support angles 6. These ALC panels 5
The upper surface is the same as the upper surface of the wooden framework 4 and the road surface, or is slightly lower than the upper surface of the wooden framework 4.

ALC panels 5 facing the four inner surfaces of the wooden frame 4
The small end faces of the four faces are in contact with the four faces directly or indirectly through a filler such as mortar.

That is, the short-side small-side surfaces at both ends of each ALC panel 5 are in contact with the inner surfaces of the small beams 3, and the long-side small-side surfaces at both ends of the two most side ALC panels 5 in each rectangular space are in contact with the inner surfaces of the small beams 3. is in contact with the inner surface of the girder 2. These aspects include the following aspects.

(2) A mode in which both ends of the ALC panel 5 or the edge surfaces of both sides are in direct contact with the inner peripheral surface of the wooden framework 4.

■The edge surface of one end or edge of the ALC panel 5 is in direct contact with the inner peripheral surface of the wooden framework 4, and the edge surface of the other end or edge of the ALC panel 5 is in direct contact with the inner surface of the wooden framework 4. A mode in which the surface is indirectly contacted with the surrounding surface via a filler.

(2) As shown in FIG. 2, both ends or edge surfaces of both sides of the ALC panel 5 are in indirect contact with the inner peripheral surface of the wooden framework 4 via the filler 7.

Note that the long side face surfaces of the ALC panels 5 that do not face the inner surface of the girder 2 are in contact with each other, and the joints thereof are filled with mortar.

According to the ALC slab structure for the wooden frame 4 configured as described above, the following actions and effects are achieved.

(1) Does not require joists like traditional wooden framework construction methods,
A plurality of ALC panels 5 are fitted into the wooden framework 4, and both ends of the lower surfaces of these ALC panels 5 are supported by support angles 6.
It can be constructed by a simple process of bringing the edge faces of the C panel 5 into contact with the four faces directly or indirectly through the filler 7. In other words, its construction does not require special skills, expertise, or a great deal of effort, making it easier to construct, shorten the construction period, and reduce costs. The shearing force in the horizontal plane generated by external forces such as pressure is not borne only by the wooden frame 4 as in the past, but also by the ALC panel 5 fitted into the inner circumference of the wooden frame 4. Since the load is effectively transmitted and borne by the impact, the in-plane shear strength possessed by the ALC panel 5 is made to function effectively.

Therefore, the performance against shear forces in the horizontal plane can be greatly improved with a simple structure.

(3) Since the ALC panel 5 is fitted into the inner periphery of the wooden framework 4, the height of the floor surface can be kept low.

(4) Since the ALC panel 5 is used, the rigidity and sound insulation properties of the floor surface are increased compared to the case where wooden floorboards are used.

(5) Since the ALC panel 5 is used, small wood such as joists is not used, and fire resistance is excellent.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, and may be modified and embodied as desired without departing from the spirit of the invention, for example, as described below.

(1) The present invention can also be embodied in a horizontal location such as a roof, etc., other than on the floor.

(2> The support means for supporting both ends of the lower surface of the ALC panel is not limited to the support angle 6. For example, the inner surface of the small beam 3 may be formed with a step, and the step may be used as the support means.

[Effects of the Invention] Since the ALC slab structure for the wooden frame of the present invention is configured as described above, joists are not required, making it possible to simplify construction, shorten the construction period, and reduce costs. In addition to significantly improving the structure's performance against shear forces in the horizontal plane, it also lowers the height of horizontal parts such as floors and roofs, increases rigidity and sound insulation, and improves fire resistance. It can produce excellent effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention in an ALC floor slab structure, Fig. 2 is a sectional view of the same, Fig. 3 is a perspective view showing a floor structure based on a conventional wooden framework construction method, and Fig. 4 is a perspective view showing an embodiment of the present invention in an ALC floor slab structure. The figure is also a sectional view, and Figure 5 is a perspective view showing another conventional floor structure.
FIG. 6 is a perspective view of a conventional steel frame ALC floor slab. 2...Large beam, 3...Small beam, 4...Wooden framework, 5...ALC panel, 6...
Support angle as support means, 7... filler.

Claims (1)

[Claims] 1. A wooden frame (
4), and a plurality of lightweight aerated concrete panels (5) fitted into the rectangular space on the inner periphery of the wooden frame (4),
The lightweight foamed concrete panels (5) are provided with support means (6) for supporting both ends of the lower surfaces of the lightweight foamed concrete panels (5), and are provided with support means (6) for supporting both ends of the lower surfaces of the lightweight foamed concrete panels (5). A lightweight aerated concrete slab structure for a wooden frame, characterized in that the end faces are in contact with the four faces directly or indirectly through a filler (7).