JP2002266454A - Slab structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance maximum yield strength and ultimate yield strength by rationally transmitting horizontal force of an earthquake and wind acting on a building from a support member in a slab composed of a plurality of precast lightweight concrete panels. SOLUTION: The slab A is composed of a plurality of ALC panels 2 laid on the support member 1. The ALC panels 2 corresponding to the outside edge 3 of the slab A are fixed to the support member 1 via a transmission member 4 for dispersively transmitting the horizontal force. A cotter 7 being a joint restricting means is formed in a part or the whole of a joint part 6 formed between the adjacent ALC panels 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slab structure such as a floor or a roof constructed by using a lightweight precast concrete panel, and in particular, an outer edge of the slab acts on a support member for supporting the slab. The present invention relates to a slab structure configured to transmit a horizontal force in a dispersed manner.

[0002]

2. Description of the Related Art Precast lightweight concrete panels are excellent in heat insulation, heat resistance and sound insulation, and are widely used as flooring materials, roofing materials or wall materials. When constructing the floor surface or roof surface of a building, for example, as a floor slab or a roof slab in which a plurality of precast lightweight concrete panels whose longitudinal ends are supported by support members made of beams are laid adjacent to each other and fixed. It is formed.

In the above-mentioned slab, a large force (in-plane force, horizontal force) in the same direction as the slab surface and a force perpendicular to the slab surface (out-of-plane force) are exerted by an earthquake or wind. For example, in a floor slab, a horizontal force acts on the floor slab according to a wind pressure or an earthquake force acting on a building, and a vertical load acts on an object placed on the floor slab. For this reason, the slab is configured to exhibit sufficiently high rigidity and strength against forces acting on the slab in each direction. Techniques having various structures have been proposed as such slabs.

[0004] For example, a technique disclosed in Japanese Patent Application Laid-Open No. H11-152832 filed by the present applicant (first known example)
When a slab composed of a plurality of precast lightweight concrete panels (panels) supported at both ends by slab supports causes in-plane deformation due to an earthquake or strong wind load, the deformation between the slab supports and the panels This solves the problem that the joints between adjacent panels tend to shift in the horizontal direction due to the difference, so that stress concentrates on the fixed portion between the slab support member and the panel, thereby causing the panel base material to bear bearing. It is done for the purpose of.

[0005] For this reason, as shown in FIG.
By fixing the panel 71 to the slab support member 72 with a stopper 74 for restraining the movement in the horizontal direction, and by providing the restraint member 76 on all or part of the joints 75 between the adjacent panels 71,
The configuration is such that horizontal displacement of the panel 71 due to horizontal shearing force applied to the slab 73 can be suppressed. In particular, adjacent mutual panels 71 are configured as an integrated unit body by preventing displacement at joints 75, and the corners of this unit body are fixed to the slab support member 72 via the reinforcing plate 77. Thus, the plurality of panels 71 can be made to resist a stress as a single large surface material, and the bearing 71 can be prevented from breaking down to exert a large horizontal shear stress and a proof stress.

The technique disclosed in Japanese Patent Application Laid-Open No. 11-303275 (second known example) makes it possible to effectively function the in-plane shear strength possessed by the panel constituting the slab and to simplify the connection of each member. In addition, the slab panel is less likely to be affected by dimensional errors and mounting errors of each member, thereby ensuring the maintenance of the slab panel.

[0007] For this reason, as shown in FIG.
A plurality of panels 71 are placed on the slab support member 72 to fix them, and a panel 78 is placed on the panel 71 so as to straddle a plurality of adjacent panels 71. 78 and panel 71
Is fixed. In this technique, by fixing the panel 71 and the face material 78, joint displacement between the panels can be prevented, and large horizontal shear stress and proof stress can be exhibited.

[0008]

In the technique of the first known example, the longitudinal end portions of the individual panels are fixed to the slab support member, and joint restraints are provided at the joint portions to prevent joint displacement. A unit body in which a plurality of panels are integrated is formed, and a corner of the unit body is fixed to a slab support member via a reinforcing member. However, since only the corners are fixed to the slab support material via the reinforcing material, the mounting structure at the corners may be broken, in which case the strength is extremely reduced and the maximum proof stress is reduced. However, there is a problem that the ultimate proof strength is reduced, and as a result, the joint portion is opened, and the effect of preventing the joint displacement by the restraining material is reduced.

In the technique of the second known example, each panel is fixed to a slab support member by a stopper, and a face material placed on the panel is fixed to the panel. For this reason, the horizontal force from the slab support material is transmitted to the panel, and the horizontal force is mainly borne by the panel, and the face material is borne only by the secondary load. Since the panel base material has low shear strength and tensile strength and lacks ductility and toughness, when the horizontal force from the slab support is transmitted to the panel via the stopper,
The panel base material around the stop breaks bearing pressure, after which the proof stress decreases. Therefore, the in-plane shear strength depends on the panel,
There is a limit to increasing rigidity.

[0010] An object of the present invention is a slab constituted by a plurality of panels, wherein a horizontal force based on an earthquake or wind acting on a building is rationally transmitted from a support member.
An object of the present invention is to provide a slab structure capable of increasing the maximum proof stress and ultimate proof stress.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a typical slab structure according to the present invention has a plurality of precast lightweight concrete panels laid and fixed directly or indirectly on a support member. A structure of a slab, wherein an outer edge of the slab and a support member are connected so as to distribute and transmit a horizontal force acting on one to the other, and are fixed so as to prevent deformation of the slab. Things.

In the slab structure, the outer edge of the slab and the support member, which are constructed by laying and fixing a plurality of precast lightweight concrete panels on the support member, disperse the horizontal force acting on one side to the other. When a horizontal force acts on the building due to an earthquake or wind, the horizontal force is transmitted from the support member to the slab through the outer edge of the slab and dispersed. For this reason, the horizontal force is not concentrated and transmitted to any part of the outer edge of the slab, and the bearing crush does not occur in the precast lightweight concrete panel constituting the slab.

Further, since the slab is fixed so as to prevent the slab from being deformed, the lightweight precast concrete panel is not deformed by a horizontal force acting on the slab. Therefore, the in-plane rigidity of the slab can be increased and the in-plane strength can be increased, and the maximum strength and ultimate strength can be increased.

In another slab structure according to the present invention, the slab is constituted by a plurality of precast lightweight concrete panels laid on a support member, and the plurality of precast lightweight concrete panels corresponding to the outer edges of the slab are horizontal. A joint member fixed to a support member via a transmission member for transmitting and distributing a force, and joint restraint means being formed in a part or all of joint portions formed between adjacent precast lightweight concrete panels. is there.

In the above-mentioned slab structure, the portion corresponding to the outer edge of the slab constituted by a plurality of lightweight precast concrete panels laid on the support member is fixed to the support member via the transmission member, thereby supporting the slab. The horizontal force transmitted from the member to the slab is dispersed by the transmission member and is transmitted from the length corresponding to the outer edge of the slab. For this reason, intensive force does not act on the precast lightweight concrete panel corresponding to the outer edge of the slab, and bearing bearing failure does not occur.

Further, joints formed between adjacent precast lightweight concrete panels are partially or entirely provided with joint restraint means, so that adjacent precast lightweight concrete panels cause relative joint misalignment. And a slab in which a plurality of precast lightweight concrete panels are integrated can be constructed. Therefore, the horizontal force can be borne by the entire slab, and the in-plane rigidity can be increased and the in-plane proof stress can be increased.

The term "all joints" refers to all joints formed between the precast lightweight concrete panels constituting the slab and along the short side direction and the long side direction. A part means only the joint part of the short side direction or the long side direction of the precast lightweight concrete panel.

In the slab structure, the transmission member preferably has a lower surface contact portion that contacts the lower surface of the precast lightweight concrete panel, and a small surface contact portion that contacts the small surface of the precast lightweight concrete panel. . With this configuration of the transmission member, when transmitting the horizontal force from the support member to the lightweight precast concrete panel forming the slab, it can be distributed to the lower surface contact portion and the fore edge contact portion. Also, the compressive force of the precast lightweight concrete panel can counteract the shear deformation of the support member, and can have excellent maximum strength and ultimate strength.

In another slab structure according to the present invention, there are provided a plurality of precast lightweight concrete panels in which the slab is laid on a support member, and a plurality of structures laid adjacent to each other on the precast lightweight concrete panels. The precast lightweight concrete panel and the structural surface material are integrally fixed, and the structural surface material corresponding to the outer edge of the slab is directly or via a connecting member. It is fixed to.

In the slab structure, a plurality of structural face materials are laid adjacent to each other on the upper surface of a plurality of precast lightweight concrete panels laid on the support member, and both are integrally fixed. By fixing the structural face material corresponding to the outer edge of the slab to the support member directly or via the connecting member, the horizontal force transmitted from the support member to the slab is dispersed by the structural face material, and mainly It can be borne by the structural face material.

In the above-mentioned slab structure, the connecting member preferably has a fore-face contact portion which comes into contact with the fore-face of the lightweight precast concrete panel. In the connecting member configured as described above, when the structural face material is fixed to the supporting member, the fore-face contact portion of the connecting member contacts the fore-face of the precast lightweight concrete panel constituting the slab,
The horizontal force from the support member is transmitted to the structural face material via the connection member. Further, the horizontal force can be transmitted to the precast lightweight concrete panel via the small-face contact portion of the connecting member, or can restrain the movement of the precast lightweight concrete panel.

In addition, joints between the structural face materials are formed on all the precast lightweight concrete panels or a part of the precast lightweight concrete panels constituting the slab, and the structural faces constituting the joints are formed. Preferably, the material and the precast lightweight concrete panel corresponding to the joint are fixed to each other, and the joint formed between the plurality of precast lightweight concrete panels constituting the slab and the precast lightweight concrete are provided. In the joint part where the joint part formed between the plurality of structural face materials laid on the panel matches,
It is preferable that joint restraint means are formed at joints between the precast lightweight concrete panels.

In the above slab structure, the joint formed between the structural members placed on the plurality of precast lightweight concrete panels can be restrained by the precast lightweight concrete panels. For this reason,
A joint slab can be formed without joint displacement occurring at joints between adjacent structural face materials. Therefore, the horizontal force transmitted from the support member can be borne by the entire slab, and the in-plane stiffness can be increased and the in-plane proof strength can be increased, so that the maximum proof strength and ultimate proof strength can be improved.

Still another slab structure according to the present invention is a slab structure comprising: a plurality of structural face members on which a slab is laid on a support member; and a structural face member laid on the structural face material supported by the support member. A plurality of precast lightweight concrete panels having greater out-of-plane bending stiffness than the material, and a structural face material corresponding to an outer edge of the slab is fixed to a support member, and the precast lightweight concrete panel is supported by the support member. Alternatively, it is fixed to the structural face material.

In the slab structure, the structural face material corresponding to the outer edge of the slab is fixed to the support member, and the structural face material has an out-of-plane flexural rigidity greater than the out-of-plane flexural rigidity of the structural face material. A plurality of precast lightweight concrete panels are supported and laid on the supporting member, and the precast lightweight concrete panels are fixed to the supporting member or the structural surface material, so that the horizontal force transmitted from the supporting member is reduced. It is possible to be in a state of being dispersed by the structural surface material, and the dispersed horizontal force can be borne by the structural surface material.

In the present invention, the structural face material is fixed to a precast lightweight concrete panel having an out-of-plane flexural rigidity greater than that of the structural face material, and is integrated with the structural face material. When horizontal force is transmitted to the face material, out-of-plane buckling of the structural face material can be prevented, and the shear strength of the structural face material can be effectively exerted. Further, since the precast lightweight concrete panel having an out-of-plane bending rigidity larger than that of the structural panel bears the vertical load, the joist can be omitted and the thickness of the structural panel can be reduced.

In the above-mentioned slab structure, at the joints formed between the structural face materials constituting the slab, the vicinity of each joint of the structural face materials constituting the joint is the same precast. It is preferably fixed to the lightweight concrete panel or the same supporting member. When the structural face material is fixed to the precast lightweight concrete panel, the precast lightweight concrete panel is installed from the upper side of the precast lightweight concrete panel. It is preferable to have a fixing means capable of drawing the structural face material to the concrete panel side.

In the above-mentioned slab structure, the same precast lightweight concrete panel or the same support is used in the vicinity of the joint between adjacent structural panels among the plurality of structural panels laid on the support member. By fixing to the member,
The joints are made of precast lightweight concrete panels,
It can be restrained by a support member. For this reason, even when horizontal force is transmitted from the support member to the structural surface material, joint displacement can be prevented and the entire slab can be borne, thereby increasing in-plane rigidity and increasing in-plane proof stress. The maximum proof stress and ultimate proof stress can be increased.

When the precast lightweight concrete panel and the structural face material are fixed to each other, the precast lightweight concrete panel is installed from the upper side of the precast lightweight concrete panel. By using the fixing means capable of drawing the structural surface material to the precast lightweight concrete panel side, the structural surface material has a greater out-of-plane bending rigidity than the structural surface material. And can be integrated by pulling it down to the lower surface. For this reason, a slab structure excellent in safety and workability can be obtained as compared with a method in which the precast lightweight concrete panel and the structural surface material are fixed by the construction from the lower surface side of the slab.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the above slab structure will be described below. The slab structure according to the present invention constitutes a floor surface or a roof surface of a building, and is configured by directly or indirectly fixing a plurality of precast lightweight concrete panels to a support member configured as a building frame. ing. In particular, in the slab structure according to the present invention, when a horizontal force acting on the building due to an earthquake or wind is transmitted to the slab via the support member, it is possible to disperse and transmit the force to the slab, It is configured so that it can exhibit the internal rigidity and the large in-plane proof strength to oppose the horizontal force transmitted to the slab.

Hereinafter, the slabs constituting the floor surface will be described for the sake of simplicity, but the slabs constituting the roof surface do not substantially change.

In the present invention, when forming a slab, a plurality of precast lightweight concrete panels positioned on the outer edge of the slab are fixedly laid on a support member via a transmission member, or a plurality of precast lightweight concrete panels are laid. Laying directly on the support member and laying a plurality of structural face materials on the precast lightweight concrete panel, and laying the structural face material directly on the support member or via a connecting member, or A plurality of lightweight precast concrete panels arranged on a plurality of structural face materials directly fixed to a support member are fixedly laid on the support member.

The supporting member is disposed along the outer edge of the slab and at a position corresponding to the length of the precast lightweight concrete panel. The precast lightweight concrete panel disposed on the outer edge of the slab has a short side and a long side. It is placed on a support member. Therefore, even the long side of the precast lightweight concrete panel that matches the outer edge of the slab can be connected to the support member via the transmission member.

In the slab configured as described above, the out-of-plane force acting perpendicularly to the slab surface is borne by the precast lightweight concrete panel, and the in-plane force acting horizontally to the slab surface. (Horizontal force) is borne by the precast lightweight concrete panel when the slab is composed only of the precast lightweight concrete panel, and is mainly used for the structure when the slab is composed of the precast lightweight concrete panel and the structural panel. It is configured to be able to bear by the face material.

The precast lightweight concrete panel is mainly composed of cement and aggregate, is lightweight, and has a small burden on the skeleton. Therefore, it is advantageous to use it as a roof material or a floor material in a wooden house or a steel frame house. In particular, lightweight aerated concrete panels (A
LC panels) have a large number of air bubbles and are excellent in heat insulation, heat resistance and sound insulation, so they are widely used in residential buildings (hereinafter "ALC panels" as representative of precast lightweight concrete panels). ).

AL used as flooring or roofing material for buildings
The dimensions of the C panel are set according to the module dimensions set for the building. This dimension is generally approximately
300-900mm range, length dimension about 1800-2000mm, thickness about
It has a range of 50 to 100 mm, and from these dimensions, those having the optimal dimensions for forming a target slab are selected and used.

In the above-mentioned ALC panel, since the base material has low shear strength and tensile strength and lacks ductility and toughness, when a high surface pressure acts partially, it may cause bearing failure. Therefore, there is a problem how to transmit the dispersed force to the ALC panel. Therefore, by interposing the transmitting member between the ALC panel and the supporting member constituting the slab, the horizontal force transmitted from the supporting member is dispersed and A
It is possible to communicate to the LC panel. When the structural face material is fixed to the support member and the structural face material and the ALC panel are fixed to each other, the structural face material mainly bears the horizontal force and disperses the acting horizontal force to the ALC panel. It is possible to convey.

The transmitting member has a higher shear strength and a higher tensile strength than the ALC panel, has a material excellent in ductility and toughness, and can transmit force by connecting between the ALC panel and the supporting member. Anything is fine. Examples of such materials include iron-based metals such as steel plates and stainless steel plates, non-ferrous metals such as aluminum and copper, and synthetic resins capable of exhibiting the strength and properties described above. Can be used. For example, when the transmission member is made of a steel plate, 0.
By using a member having a thickness of about 4 mm to 6 mm, the function as a transmission member can be exhibited.

As the transmission member, a groove type (channel) capable of contacting the end portion of the ALC panel from the upper surface to the lower surface including the small surface, and a mountain shape (angle) contacting the small surface and the lower surface of the ALC panel. ) Is preferable. By using the transmission member having such a shape, the horizontal force from the support member can be dispersed by the transmission member and transmitted to the ALC panel.

A connecting member used for laying a plurality of structural surface materials on the ALC panel and fixing the structural surface materials to the support member is a horizontal force transmitted from the support member to the structural surface material. As long as it can be conveyed reliably,
It is preferable that the ALC panel has a shape capable of abutting against the fore-edge surface and transmitting forces to each other. For example, as the connection member, a Z-shaped member that contacts the upper surface and the fore-edge surface of the ALC panel can be used, and the transmission member can be used as it is.

The structural face material mainly functions as a member that bears a horizontal force when a slab is formed in combination with the ALC panel, and any material that exhibits this function can be used. . Such materials include, for example, structural plywood. In the present invention, it is not required that the structural face material bear the force in the out-of-plane direction. For this reason, the joist is omitted and the beam interval is 900 mm to 1000 m.
m, it is thinner (approximately 12 mm) than the thickness of structural plywood (approximately 24 mm
mm).

The structural face material having the above thickness has a small out-of-plane bending rigidity, and easily buckles out of the plane when a shear force acts in the in-plane direction. For this reason, in the slab in which the precast lightweight concrete panel is laid on the structural face material, the out-of-plane flexural rigidity of the precast lightweight concrete panel is made larger than the out-of-plane flexural rigidity of the structural face material. By fixing the surface material to a precast lightweight concrete panel, the two can be integrated, preventing out-of-plane buckling of the structural material and effectively functioning the shear strength of the structural material. is there.

The support member has a function of supporting a slab as a floor surface or a roof surface and transmitting a force acting on the building to the slab. The material of the support member is not particularly limited, and the support member is selectively made of wood, steel, or the like in accordance with conditions such as the material of the frame. It is preferable that the support member has a width capable of stably mounting the ALC panel and the structural face material constituting the slab, and having a sufficient margin to be fixed.

The ALC panel and the structural face material constituting the slab are supported by placing both ends in the longitudinal direction on a support member. In this slab, since the out-of-plane force is borne by the ALC panel, it is preferable that the ALC panel is configured so that the intermediate portion in the longitudinal direction can be supported by the support member. Thus, by supporting the ALC panel in three lines, the thickness of the ALC panel can be reduced.

The outer edge of the slab is formed of a plurality of ALC panels constituting the slab, the ALC panel arranged along the outer periphery of the slab among the structural face materials, the short side of the structural face material, and
Or, it is formed by a small edge on the long side. In particular, since the slab is formed with a planar shape corresponding to the shape of the target floor surface, for example, when a stair or an elevator is provided through a building in a vertical direction, a portion where the stair or the elevator is installed is provided. An outer edge is also formed at a portion facing the formed opening.

The outer edge of the slab is connected to the support member so that the horizontal force transmitted from the support member acts as a distributed load without acting as a concentrated load, and is fixed so as not to deform the slab. I have.

In order to increase the rigidity of the slab, the slab is configured to be prevented from being deformed. In order to prevent deformation of the slab, joints formed between adjacent ALC panels constituting the slab are provided with joint restraint means, and joints formed between structural face materials. Realizes constraint of the joint by fixing the structural face material and the ALC panel to each other near the joint.

The joint restraining means provided at the joint formed between the plurality of ALC panels to prevent the displacement of the joint is, for example, a hole having a predetermined depth across both the ALC panels with the joint as a center. Is formed, and a cotter having a diameter and a length substantially equal to the hole is fitted into the hole, so that the cotter can prevent relative displacement between adjacent ALC panels. Further, as another joint restraining means, a wet cotter formed by filling the hole with mortar or a plywood laid over the joint and the plywood is screwed to an ALC panel arranged on both sides of the joint is provided. There is a structure fixed by utilizing the above.

Hereinafter, a preferred embodiment of the slab structure according to the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a slab according to a first embodiment in which a plurality of ALC panels are laid on a support member. FIG. 2 is a side view for explaining the relationship between the ALC panel and the support member in the slab of the first embodiment. FIG. 3 is a diagram for explaining the arrangement of joint restraint means provided at joints formed between ALC panels. FIG.
FIG. 4 is a cross-sectional view illustrating a configuration of a transmission member that transmits a horizontal force from a support member to the ALC panel by dispersing the horizontal force. FIG. 5 is a perspective view illustrating the configuration of the transmission member used for the slab according to the first embodiment. FIG. 6 is a plan view of a slab according to a second embodiment in which a plurality of structural face materials are laid on an ALC panel. FIG. 7 shows AL in the slab of the second embodiment.
It is a figure explaining the relationship between C panel and structural surface materials. FIG. 8 is a diagram illustrating a structure for fixing the outer edge of the slab.
FIG. 9 is a diagram illustrating an example of a connection member. FIG. 10 is a view for explaining the configuration of a slab according to the third embodiment in which an ALC panel is laid on a structural surface material laid on a support member.
FIG. 11 is a view for explaining an example of the arrangement of structural plywood in a slab according to the third embodiment. FIG. 12 is a view for explaining the relationship between the structural face material and the ALC panel in the third embodiment.
FIG. 13 is a view for explaining a structure for fixing the outer edge of the slab to the support member according to the third embodiment.

First, the configuration of the slab A according to the first embodiment will be described with reference to FIGS. In the figure, a slab A is configured by laying a plurality of ALC panels 2 on a support member 1 such as a beam or a trunk which is arranged in advance corresponding to the floor of a target building. The outer edge 3 of A is fixed to the support member 1 via the transmission member 4, and further, the adjacent A
The joint 6 formed between the LC panels 2 is provided with a cotter 7 serving as joint restraining means.

Incidentally, reference numeral 8 shown in FIG. 1 denotes an opening of the slab A, which is a portion where stairs and elevators penetrating up and down the building are arranged.

The arrangement interval of the support members 1 corresponds to the length of the ALC panel 2, and both ends of the ALC panel 2 in the longitudinal direction are configured to be placed on and supported by the support member 1. I have.

In this embodiment, the support member 1 is made of a horizontal member such as a wooden beam or a trunk. But,
The support member 1 does not necessarily need to be made of wood, and in a building having a skeleton of a steel frame structure, it is possible to add a lip channel steel to an upper flange of an H-shaped steel constituting a beam to be a support member.

Further, as shown in FIG.
It is also possible to provide an intermediate beam 9 in the middle of the above and support the ALC panel 2 with three lines including the intermediate beam 9. Thus, A
When the LC panel 2 is supported in three lines, the thickness of the ALC panel 2 can be reduced when the supporting interval of the ALC panel 2 is short and the magnitude of the force acting in the out-of-plane direction is constant. .

When a plurality of ALC panels 2 are laid on the support member 1, the placed ALC panels 2 are those whose any side coincides with the outer edge 3 of the slab A, and any side of which is the outer edge 3 of the slab A. There are some that do not match. And ALC
The side of the panel 2 that coincides with the outer edge 3 of the slab A is the transmission member 4
The other side is directly fixed to the support member 1 by a fixing tool 10 such as a nail or a screw.

Therefore, the ALC panel 2 having the side coincident with the outer edge 3 of the slab A has a side coincident with the outer edge 3 (short side 2).
a, the long side 2b) is fixed to the support member 1 via the transmission member 4, but the ALC panel 2 (having the joint portion 6 formed all around) having no side coincident with the outer edge 3 is fixed. It is fixed to the support member 1 only by the tool 10.

The transmission member 4 is made of a material such as a metal or a synthetic resin as described above, and has a function of transmitting the horizontal force from the support member 1 to the slab A and limiting its shape. is not.

Therefore, as shown in FIGS. 4A and 5, the groove-shaped transmission member 4 corresponding to the thickness of the ALC panel 2 is used.
Alternatively, as shown in FIG. 4B, there is a plate-shaped transmission member 11 that is disposed between the support member 1 and the ALC panel 2 and is integrally fixed by the fixture 10. In this transmission member 11,
ALC using adhesive or ALC screw (not shown)
The panel 2 is integrated with the lower surface.

As shown in FIG. 7C, the lower surface contacting piece 12a which contacts the lower surface of the ALC panel 2 and the small face which becomes the outer edge 3 of the slab A, and the ALC exclusive screw 13 is attached to the small face. It can be configured as an angle-shaped transmission member 12 or the like composed of the fore-face contact piece 12b fixed by the above.

The transmission member 4 used in the slab A according to this embodiment will be described. As shown in FIGS. 4A and 5, the transmission member 4 includes a lower surface contact piece 4 a that contacts the lower surface of the ALC panel 2, a small face contact piece 4 b that contacts the small face of the ALC panel 2, The upper surface contact piece 4c that contacts the upper surface of the ALC panel 2 is formed in a groove shape. A hole 4d for inserting the fixing tool 10 is formed in the upper surface contact piece 4c. The ALC panel 2 is fixed to the support member 1 by driving the fixing tool 10 using the hole 4d as a guide. The horizontal force from the support member 1 is dispersed through the fixture 10, the lower surface contact piece 4a, and the small face contact piece 4b, and the force dispersed by the transmission member 4 can be transmitted to the ALC panel 2. is there.

In the transmission member 4, the distance between the outer surfaces of the lower surface contact piece 4 a and the upper surface contact piece 4 c is equal to the thickness of the ALC panel 2, or the distance between the inner surfaces is equal to the thickness of the ALC panel 2. You. For example, the distance between the outer surfaces of the transmission member 4 is A
When formed to have the same thickness as the LC panel 2, pieces 2a and 2b corresponding to the outer edge 3 of the slab A in the ALC panel 2
Need to be cut in advance. Transmission member 4
When the distance between the inner surfaces of the ALC panel 2 is formed to be equal to the thickness of the ALC panel 2, when the ALC panel 2 is laid on the support member 1, at a portion fixed to the support member 1 without the interposition of the transmission member 4, It is necessary to interpose a liner having a thickness equal to the thickness of the material of the transmission member 4 between the member 1 and the lower surface of the ALC panel 2.

The number of fixtures 10 used for fixing each side 2a, 2b of the ALC panel 2 that matches the outer edge 3 of the slab A to the support member 1 via the transmission member 4 is set in advance. For this reason, when the outer edge 3 of the slab A is fixed to the support member 1, the slab A receives the horizontal force from the support member 1 in a state of being substantially distributed load.

In particular, by attaching the groove-shaped transmission member 4 to the long side 2b of the ALC panel 2 which coincides with the outer edge 3 of the slab A, it is possible to prevent the reinforcing bar from being arranged near the long side 2b. Even if there is, it becomes possible to insert the fixture 10, and it is possible to realize high rigidity and large proof stress on the long side 2b.

A plurality of ALC panels 2 constituting slab A
The joint 6 formed between the adjacent ALC panels 2 is provided with joint restraining means. This joint part restraining means straddles two adjacent ALC panels 2 across the joint part 6, forms a hole having a predetermined depth in the thickness direction of the ALC panel 2, and forms a round bar in this hole. And a cotter 7 fitted with a pipe. A plurality of the cotters 7 are provided at predetermined intervals in the joint portion 6. When a horizontal force acts on the slab A, the cotters 7
By countering this horizontal force, it is possible to prevent the joint portion 6 from shifting.

In this embodiment, the outer diameter is about 34 mm and the length is about 40 mm.
The cotter 7 is formed using a pipe having a thickness of about 3 mm and a thickness of about 3 mm. By forming the cotters 7 at a pitch of about 600 mm, misalignment of the joints 6 is prevented and a plurality of ALC panels 2 constituting the slab A are integrated.

Incidentally, in FIG. 1, reference numeral 14 denotes columns constituting the building frame.

Next, the configuration of the slab B according to the second embodiment will be described with reference to FIGS. In the drawings, the same portions and portions having the same functions as those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the slab B, a plurality of structural face materials 21 are further laid on the plurality of ALC panels 2 laid on the support member 1, and the structural face materials 21 corresponding to the outer edges 3 of the slab B are connected. A joint 23 fixed to the support member 1 via the member 22 and formed between the adjacent structural face materials 21 and not matching the joint 6 between the ALC panels 2. AL
Restrained by C panel 2 and joints 6 of ALC panel 2
In the joint part 23 which coincides with the above, the cotter 7 is provided on the joint part 6 of the ALC panel 2 so as to be constrained, thereby achieving integration.

As described above, in order to integrate the slab B, the ALC panel 2 and the structural face material 21 are not aligned with the joints 6 and 23, and the structural face material 21 is AL.
It is fixed to the ALC panel 2 by a screw 24 dedicated to C.

That is, the structural face material 21 laid on the ALC panel 2 fixed to the support member 1 is not necessarily an ALC panel.
The width and length need not be the same as the panel 2, and the arrangement direction does not need to be the same as the ALC panel 2. As described above, by changing the size and the arrangement direction of the structural face materials 21 in a direction orthogonal to the arrangement direction of the ALC panels 2, the joint portions 6 formed between the ALC panels 2 and the structural face materials 21 are changed. It is possible to reduce the possibility that the joint portion 23 formed at the same position matches. Then, apply the structural surface material 21
By fixing the joints 23 and 6 to the C panel 2 with the screws 24, the slab B can be integrated with each other.

In the slab B, the horizontal force acting on the slab B is borne by the structural face material 21, and the out-of-plane force acting on the slab B is borne by the ALC panel 2. For this reason, the portions of the ALC panel 2 that are supported by the support members 1 (intermediate beams 9) are fixed to the support members 1 (intermediate beams 9) by fixtures 10 (see FIG. 7).

The plurality of structural face materials 21 are laid on the plurality of ALC panels 2 supported by the support member 1, and a side corresponding to the outer edge 3 of the slab B is connected to the support member 22 via the connection member 22. 1 and is fixed to the ALC panel 2 by a plurality of screws 24 having a predetermined interval at a portion along an joint 23 formed between the structural member 21 and the adjacent structural face material 21. In addition, the structural face material 21 is also provided with a plurality of screws 24 having a predetermined interval at portions other than the portion along the outer periphery.
It is fixed to the C panel 2.

As a result, the structural face material 21 is integrated with the ALC panel 2 to prevent buckling in the out-of-plane direction, so that the shear strength can function effectively. Further, the joint 23 of the structural panel 21 is formed by an A disposed below the joint 23.
Since the structural panel 21 is bridged by the LC panel 2 and fixed and restrained by the screw 24, the structural panel 21 is integrated with the adjacent structural panel 21, and the shear force can be transmitted effectively. .

In the joint 6 formed between the ALC panels 2, the structural face material 21 is fixed to the ALC panel 2 near the joint 6 by a plurality of screws 24 having a predetermined interval. In this case, the joint 6 of the ALC panel 2 is bridged by the structural face material 21 disposed on the joint 6 and is fixed and restrained by the screw 24. Therefore,
The joints 6 and 23 can be sufficiently constrained to prevent misalignment, and the slab B can be integrated.

The joint 6 of the ALC panel 2 and the structural surface material 21
When the joints 23 coincide with each other, the continuity of the slab B is cut off by the coincident joints 6 and 23. For this reason, AL
By providing the cotter 7 at the joint portion 6 of the C panel 2, the slab B can be integrated.

The structural face material 21 corresponding to the outer edge 3 of the slab B
Is connected to the support member 1 via the connection member 22. The connecting member 22 applies the horizontal force from the support member 1 to the structural face material.
The material and the shape are not limited as long as the material and the shape can be exhibited.

The connection member 22 transmits a force to the structural panel 21 laid on the upper surface of the ALC panel 2.
As shown in (a), an upright piece 22a equal in thickness to the ALC panel 2, a connecting piece 22b connected to the structural face material 21,
It is possible to use a member having a fixing piece 22c fixed to the support member 1. In the connecting member 22, the connecting piece 22b and the fixing piece 22c have substantially equal dimensions,
Moreover, the cross-sectional shape is formed in a groove shape. This connection member 22
Then, after attaching to the side of the ALC panel 2 and arranging the structural surface material 21 on the upper surface, the fixing tool 10 is driven from above the structural surface material 21 to connect the structural surface material 21 via the connection member 22. The ALC panel 2 can be fixed to the support member 1 while the ALC panel 2 is fixed to the support member 1.

Further, as shown in FIG.
It is also possible to use a connecting member 25 formed shorter than the fixing piece 25c. When this connecting member 25 is used, the connecting member 25 is attached to the side of the ALC panel 2 and fixed to the support member 1 by the fixture 10, and then the structural face material 21 is arranged on the ALC panel 2, for example, The structural face material 21 can be fixed to the support member 1 via the connection piece 25b by a screw 26 such as a self-drilling screw.

Further, the connecting member does not necessarily have to be formed in a groove shape, but may be formed in a Z shape as shown in FIGS. 9 (a) and 9 (b). Each of these connecting members 27 and 28 includes a standing piece 27a, 28a, a connecting piece 27b, 28b, and a fixing piece 27.
c and 28c.

The connecting members 22, 25, 2 configured as described above
7 and 28, the standing pieces 22a, 25a, 27a and 28a are A
It is configured as a fore-face abutment piece that abuts on the fore-face of the LC panel 2, and when a horizontal force is transmitted from the support member 1, it comes into contact with the fore-face of the ALC panel 2 to apply force to the ALC panel 2. It is possible to communicate.

In the slab B configured as described above, the horizontal force acting on the building is transmitted from the support member 1 to the structural face material 21 via the connecting member 22 and is borne by the structural face material 21. . In particular, at the joint 23 of the structural panel 21, the horizontal force is transmitted to the ALC panel 2 via the screw 24,
It is transmitted from the panel 2 to another structural panel 21 adjacent to the joint 23. As described above, the horizontal force is transmitted to the adjacent structural face material 21 via the ALC panel 2 bridged to the joint 23 of the structural face material 21, so that the burden can be effectively borne.

In the present embodiment, the structural face material 21 laid on the ALC panel 2 is fixed to the support member 1 via the connecting member 22. However, the present invention is not limited to this structure, and the structure is not limited to this. It may be fixed to the member 1.

Next, the structure of the slab C according to the third embodiment will be described with reference to FIGS. The slab C is configured such that a plurality of ALC panels 2 and 31 are further laid on a plurality of structural face materials 21 laid on the support member 1.
An intermediate beam 9 is provided at an intermediate portion of the support member 1 at a position corresponding to the width dimension of the structural face material 21. In particular, the figure
In the example of FIG. 10, the structural face materials 21 are arranged in a direction crossing the support member 1 and the intermediate beam 9, and in the example of FIG. Are arranged along. In any case, a similar slab C can be formed.

In FIG. 10, the structural face material 21 is the support member 1.
Fixtures such as nails and screws with a preset interval for
The intermediate portion is fixed to the intermediate beam 9 by a fixture 32. Therefore, the support member 1
Is transmitted to the structural face material 21 via the fixture 32 and is borne.

The joint 23 formed along the long side of the adjacent structural face material 21 is unstable as a free end because the support member 1 and the intermediate beam 9 are not disposed at the corresponding portions. Becomes Therefore, it is possible to restrain the structural panel 21 on both sides of the joint 23 by fixing it to the ALC panel 2.

The ALC panels 2 and 31 having a width different from the width of the structural face material 21 are provided on the upper surface of the structural face material 21.
Are arranged in the same direction.
And the intermediate beam 9. In particular, the ALC panels 2 and 31 have joints 23 formed between the long sides of the structural face material 21.
Are arranged so as to cross-link them, and by driving face material fixing screws 33 along both sides of the joint portion 23, the structural face material 21 is drawn toward the ALC panels 2 and 31. It is fixed.

Therefore, the structural surface material 21 and the ALC panels 2 and 31 are fixed to the support member 1 in the direction along the short side, and in the direction along the long side of the structural surface material 21 and in the joint portion 23. The periphery is an ALC panel 2 in which the joints 23 are bridged.
, The slab C is configured as an integrated one.

Further, in the example of FIG. 11, each structural face material 21 (whether or not it coincides with the outer edge 3 of the slab C) is preset for the support member 1 and the intermediate beam 9. It is firmly fixed by a fixture 32 with a space. In this example, the direction of the support member 1 and the intermediate beam 9 and the
Are parallel to the longitudinal direction, the number of joints 23 formed by the free ends of the structural face material 21 is reduced. Even in this case, it is the same as the example of FIG. 10 that the periphery of the joint portion 23 is fixed by the face material fixing screw 33 that is driven into the ALC panel 2 arranged by bridging the joint portion 23. .

The face material fixing screw 33 is driven from the upper surface side of the ALC panel 2 to penetrate the ALC panel 2,
Moreover, when the structural face material 21 located on the lower surface of the ALC panel 2 is penetrated, the structural face material 21 is drawn to the ALC panel 2 side and fixed.

As shown in FIG. 13, the face material fixing screw 33 having such a function has a screw portion 33a longer than the thickness of the structural face material 21 at the tip portion, and the screw portion has The subsequent portion has a bar-shaped portion 33b substantially equal in thickness to the ALC panel 2. With the face material fixing screw 33 configured as described above, AL
When the ALC panel 2 is penetrated while being rotated from the upper surface of the C panel 2, the screw portion 33a penetrates the structural face material 21 to function as a screw. The surface material 21 can be pulled toward the ALC panel 2 and fixed.

In the slab C configured as described above, the structural face material 21 is integrated by being attracted to and fixed to the ALC panel 2 by the face material fixing screw 33. When a horizontal force acts, it is possible to prevent buckling in an out-of-plane direction. Structural panel 21
The joint 23 formed therebetween is firmly fixed to the support member 1 and the intermediate beam 9 or is fixed to the ALC panel 2. For this reason, the joint part 23 of the slab C is restrained and integrated.

[0092]

As described above in detail, in the slab structure according to the present invention, the outer edge of the slab formed by laying and fixing a plurality of precast lightweight concrete panels on the support member and the support member, It is connected so that the horizontal force acting on one side can be distributed and transmitted to the other, so when a horizontal force acts on the building due to an earthquake or wind, this horizontal force is transmitted from the support member through the outer edge of the slab. And distributed to the slab. Therefore, the horizontal force is not transmitted to any part of the outer edge of the slab in a concentrated manner, and the precast lightweight concrete panel constituting the slab does not bear bearing pressure, and the horizontal force acting on the slab is not affected. Precast lightweight concrete panels are not deformed by force. Therefore, the in-plane rigidity and in-plane strength of the slab can be increased, and the maximum strength,
Ultimate strength can be increased.

Further, the portion corresponding to the outer edge of the slab constituted by the plurality of lightweight precast concrete panels laid on the support member is fixed to the support member via the transmission member, so that the slab is transferred from the support member to the slab. The transmitted horizontal force is dispersed by the transmission member. For this reason, bearing failure does not occur in the lightweight precast concrete panel corresponding to the outer edge of the slab.

Also, joints formed between adjacent precast lightweight concrete panels are partially or wholly provided with joint restraining means. Therefore, joints between adjacent precast lightweight concrete panels may be misaligned. And a slab in which a plurality of precast lightweight concrete panels are integrated can be constructed. Therefore, the horizontal force can be borne by the entire slab, and the in-plane rigidity can be increased and the in-plane proof stress can be increased.

Further, in the transmitting member according to the present invention, the small contact portion which comes into contact with the small edge of the precast lightweight concrete panel can resist the shear deformation of the supporting member by the compressive force of the precast lightweight concrete panel, and the maximum proof stress can be obtained. , Ultimate strength can be increased.

Further, a plurality of structural face materials are laid adjacent to each other on the upper surface of the plurality of precast lightweight concrete panels laid on the support member, and both are integrally fixed. Is fixed to the support member directly or via a connecting member, so that the horizontal force transmitted from the support member to the slab is dispersed by the structural surface material, And can be borne by precast lightweight concrete panels.

Further, a plurality of precast members having a structural surface material corresponding to the outer edge of the slab fixed to the support member and having an out-of-plane bending rigidity greater than the out-of-plane bending rigidity of the structural surface material are provided on the structural surface material. By laying the lightweight concrete panel made by supporting the supporting member and laying the precast lightweight concrete panel on the supporting member or the structural panel, the horizontal force transmitted from the supporting member is dispersed by the structural panel. In this case, the structural horizontal member can bear the dispersed horizontal force. Further, since the precast lightweight concrete panel bears the vertical load, the joist can be omitted and the thickness of the structural surface material can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a slab according to a first embodiment configured by laying a plurality of ALC panels on a support member.

FIG. 2 is a side view illustrating a relationship between an ALC panel and a support member in the slab of the first embodiment.

FIG. 3 is a diagram illustrating the arrangement of joint restraint means provided at joints formed between ALC panels.

FIG. 4 is a cross-sectional view illustrating a configuration of a transmission member that transmits a horizontal force from a support member to an ALC panel by dispersing the horizontal force.

FIG. 5 is a perspective view illustrating a configuration of a transmission member used for the slab according to the first embodiment.

FIG. 6 is a plan view of a slab according to a second embodiment in which a plurality of structural face materials are laid on an ALC panel.

FIG. 7 is a diagram illustrating a relationship between an ALC panel and a structural face material in a slab according to a second embodiment.

FIG. 8 is a diagram illustrating a structure for fixing an outer edge of a slab.

FIG. 9 is a diagram illustrating an example of a connection member.

FIG. 10: AL on a structural panel laid on a support member
It is a figure explaining composition of a slab concerning a 3rd example in which C panel was laid.

FIG. 11 is a diagram illustrating an example of the arrangement of structural plywood in a slab according to a third embodiment.

FIG. 12 is a diagram illustrating a relationship between a structural face material and an ALC panel in a third embodiment.

FIG. 13 is a view illustrating a structure for fixing an outer edge of a slab to a support member according to a third embodiment.

FIG. 14 is a diagram illustrating a first known example.

FIG. 15 is a diagram illustrating a second known example.

[Explanation of symbols]

 AC slab 1 Support member 2 ALC panel 2a Short side 2b Long side 3 Outer edge 4,11,12 Transmission member 4a Lower surface contact piece 4b Fore face contact piece 4c Upper surface contact piece 4d Hole 6 Joint 7 Cotter 8 Opening Part 9 Intermediate beam 10 Fixture 13 ALC dedicated screw 14 Pillar 21 Structural surface material 22, 25, 27, 28 Connection member 22a Standing piece 22b Connection piece 22c Fixing piece 23 Joint 24 Screw 31 ALC panel 32 Fixture 33 Face material Fixing screw 33a Screw part 33b Rod part 33c Head

Claims (10)

[Claims] 1. A slab structure having a plurality of precast lightweight concrete panels laid or fixed directly or indirectly on a support member, wherein a horizontal force acting on one of the outer edge of the slab and the support member is provided. A slab structure characterized in that it is connected so as to be able to transmit to the other in a dispersed manner and is fixed so as to prevent deformation of the slab. 2. A transmission member in which a slab is constituted by a plurality of precast lightweight concrete panels laid on a support member, and the plurality of precast lightweight concrete panels corresponding to the outer edges of the slab transmit a horizontal force in a distributed manner. A slab structure characterized in that joint restraint means are formed in a part or all of joints formed between adjacent precast lightweight concrete panels, and the joints are fixed to a support member through the joint. 3. The transmission member has a lower surface contact portion abutting on a lower surface of the precast lightweight concrete panel, and a small surface contact portion abutting on a small surface of the precast lightweight concrete panel. Item 2. A slab structure according to item 2. 4. A slab comprising a plurality of precast lightweight concrete panels laid on a support member, and a plurality of structural face members laid adjacent to each other on said precast lightweight concrete panels, The precast lightweight concrete panel and the structural face material are integrally fixed to each other, and the structural face material corresponding to the outer edge of the slab is fixed to the support member directly or via a connecting member. Slab structure. 5. The slab structure according to claim 4, wherein the connecting member has a fore-face contact portion that contacts the fore-face of the lightweight precast concrete panel. 6. Joints between structural face materials are formed on all or part of the precast lightweight concrete panels constituting the slab, and the structure constituting the joints is provided. 5. The surface material and a precast lightweight concrete panel corresponding to the joint are fixed to each other.
Or the slab structure described in 5. 7. A joint formed between a plurality of precast lightweight concrete panels constituting the slab and a joint formed between a plurality of structural face materials laid on the precast lightweight concrete panel. The slab structure according to any one of claims 4 to 6, wherein joints between the precast lightweight concrete panels are formed with joint restraining means at joints where the following conditions are satisfied. 8. A plurality of structural slabs in which a slab is laid on a support member, and an out-of-plane bending rigidity laid on the structural slab and on the support member and greater than the structural slab. A plurality of precast lightweight concrete panels are provided, and a structural surface material corresponding to the outer edge of the slab is fixed to a support member, and the precast lightweight concrete panel is fixed to the support member or the structural surface material. A slab structure characterized by the following. 9. A precast lightweight concrete panel in which joints formed between the structural face members constituting the slab are the same in the vicinity of each joint of the structural face materials constituting the joint portion. 9. The slab structure according to claim 8, wherein the slab is fixed to the same support member. 10. A fixing means for fixing the structural panel and the precast lightweight concrete panel from the upper surface side of the precast lightweight concrete panel so as to draw the structural panel to the precast lightweight concrete panel side. 9. The method according to claim 8, wherein
Or the slab structure described in 9.