JP5199855B2 - Wooden frame wall - Google Patents

Description

  The present invention relates to a structure of a frame wall made of a wood material.

  In Patent Document 1, a structural surface material capable of forming a load bearing structure is formed on the indoor side surface or the outdoor side surface of a frame body constituted by pillars and the like, and the outer peripheral edge of the structural surface material is the indoor side surface of the frame body Or, it is arranged so as to be polymerized on the outdoor side surface, and a thin holding force tape made of metal or synthetic resin is adhered to the periphery of the structural surface material, and then fastened with a nail or the like from above, a nail or It is disclosed that a frame wall having a large wall magnification is obtained by increasing the holding force of structural structural members by screws.

JP 2003-129591 A

However, when a metal is used as the holding force tape, the strength of the metal itself is reduced due to the occurrence of rust due to secular change, which may lead to a reduction in wall magnification.
In addition, when a synthetic resin is used as the holding force tape, the strength of the synthetic resin is relatively small, so the thickness of the holding force tape must be increased to satisfy the desired performance, and the wall thickness Invited to increase.

Normally, the limit performance of the holding force of the nail or screw is determined by the breaking strength of the upper and lower edges of the structural face material, but when engineered wood is used as the frame, the breaking strength of the structural face material In some cases, the breaking strength of the side surface of the engineered wood (for example, the surface orthogonal to the laminated surface) is smaller.
However, in such a case, the wall magnification is determined by the breaking strength of the side surface of the engineered wood. Therefore, in the structure described in Patent Document 1, the wall magnification of the frame wall exceeds the breaking strength of the side surface of the engineered wood. I couldn't make it bigger.

The present invention has been made to solve such a problem, and a first object is to provide a wooden frame wall that can prevent an increase in wall thickness without deterioration in performance due to secular change. And
The present invention also provides a wooden frame wall that can increase the wall magnification without being controlled by the breaking strength of the side surface of the engineered wood when engineered wood is used as the frame. Let it be the second issue.

The wooden frame wall according to the present invention includes a plurality of vertical frames that are spaced apart from each other, a lower frame that connects upper ends of the vertical frames, and lower ends of the vertical frames. A wooden structural body including a frame, a wooden structural face material disposed on the outdoor side of the frame body, and at least the upper frame and the lower surface among the outdoor side surfaces of the structural face material A carbon fiber sheet bonded to a portion overlapping the frame, the carbon fiber sheet and the structural face material, and penetrate the upper frame or the lower frame, respectively. A plurality of fixing members that are fixed to the two terminals, a measuring device that measures the moisture content of the one disposed between the two terminals, a carbon fiber sheet that is disposed on the outdoor side of the structural face material, and that corresponds to the upper frame, A lath net for electrically connecting the carbon fiber sheet corresponding to the lower frame; Attaching one terminal of the measuring device to the part of the indoor side surface of the structural face material, to which the carbon fiber sheet corresponding to the upper frame is bonded to the outdoor side surface, The other terminal of the measuring device is attached to a portion of the indoor side surface of the structural face material, to which the carbon fiber sheet corresponding to the lower frame is bonded to the outdoor side surface. .

According to this configuration, when the upper and lower edges of the structural face material are reinforced by the carbon fiber sheet and are difficult to break, the wall magnification can be increased and a metal holding force tape is used. Therefore, the strength of the holding force tape does not decrease due to aging, and the wall magnification can be increased.
Moreover, since the carbon fiber sheet has a small thickness, the wall magnification can be increased without increasing the wall thickness as compared with the conventional case.
Moreover, it is more preferable not only to use the upper and lower edges of the structural face material but also the left and right edges of the structural face material.
Moreover, according to this structure, since the moisture content of the structural surface material sandwiched between the terminal of the measuring device and the carbon fiber sheet can be measured, the water leakage test can be performed without destroying the wall. Can do.

  Preferably, at least one of the lower frame and the upper frame is made of engineered wood, and another carbon fiber sheet is bonded to the side surface of the engineered wood on the structural face material side.

By doing so, it is possible to prevent breakage (breakage) of the side surface of the engineered wood.
In addition, when engineered wood is used not only for the upper frame and the lower frame but also for the vertical frame, it is more preferable to bond another carbon fiber sheet to the side surface of the vertical frame on the structural face material side.
The engineered wood may be any material as long as it is configured by bonding and molding wood. For example, the engineered wood may be configured by stacking a plurality of thin wooden plates, or by stacking wood sections and the like. It may be a thing.

ADVANTAGE OF THE INVENTION According to this invention, a wooden frame wall which can prevent the increase in wall thickness without a performance falling by a secular change can be provided.
In addition, according to the present invention, when engineered wood is used as a frame, a wooden frame wall that can increase the wall magnification without being controlled by the breaking strength of the side surface of the engineered wood is provided. Can do.

A wooden frame wall according to an embodiment of the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted.
FIG. 1 is a perspective view in which a part of a wooden frame wall according to the first embodiment is cut away. 2A is a cross-sectional view taken along the line II in FIG. 1, and FIG. 2B is an enlarged view of a portion A in FIG.

As shown in FIGS. 1 and 2, the wooden frame wall 1 according to the first embodiment constitutes a structural wall (bearing wall) of a building constructed by a so-called wooden frame wall construction method.
The wooden frame wall 1 includes a frame 2, a structural face material 3, a carbon fiber sheet 4, waterproof paper 5, and an exterior material 6.

The frame 2 is a member that serves as a wall base, and includes a plurality of vertical frames 21 that are erected apart from each other, an upper frame 22 that connects upper ends of the plurality of vertical frames 21, and a plurality of vertical frames 21. The lower frame 23 which connects the lower end parts of each other.
The vertical frame 21, the upper frame 22, and the lower frame 23 are, for example, long wooden members that are sawn into a rectangular shape having a cross section of 2 inches × 4 inches.
The lower frame 23 is fixed by nailing on a floor member (not shown).

The structural face material 3 is made of, for example, a structural plywood, and is attached to the outdoor side of the frame body 2. The structural face material 3 is fixed to the frame body 2 by driving a nail 7 as a fixing member into a portion overlapping with the vertical frame 21, the upper frame 22, and the lower frame 23 (see FIG. 2B).
The fixing member is not limited to the nail 7 and may be a screw, for example.

The carbon fiber sheet 4 is formed by weaving a plurality of carbon fiber strands into a sheet shape. The carbon fiber sheet 4 has a function of reinforcing the breaking strength of the structural face material 3.
As shown in FIG. 1, the carbon fiber sheet 4 is a portion overlapping the upper frame 22 and the lower frame 23 among the outdoor-side surfaces of the structural face material 3, that is, the outdoor-side surface 31 of the structural face material 3. The upper edge 31a and the lower edge 31b are bonded to each other with an adhesive such as an epoxy resin, an aqueous polymer-isocyanate adhesive, or a resilcinol adhesive, for example. The carbon fiber sheet 4 may be bonded to the structural face material 3 at the site. However, if the carbon fiber sheet 4 is bonded at the factory, the adhesion performance can be stabilized.

  The waterproof paper 5 is a member that prevents the intrusion of rainwater into the structural face material 3, and is formed of, for example, a modified asphalt layer formed on one side of a nonwoven fabric. In the present embodiment, the waterproof paper 5 has a plurality of protrusions 5a on the indoor side surface. Thereby, a ventilation layer is formed between the waterproof paper 5 and the structural face material 3, and moisture that has permeated through the structural face material 3 from the indoor is released to the outdoors.

The exterior material 6 is a member constituting a so-called wet exterior, and is composed of a lath net 61 and a mortar 62 painted on the lath net 61.
As shown in FIGS. 2 (a) and 2 (b), the lath net 61 is a steel net-like member that is a core material of the mortar 62, and includes a flat surface portion 61a and a plurality of concave portions 61b. . As shown in FIG. 2B, the recess 61 b of the lath net 61 is fixed to the structural face material 3 by staples 63 that penetrate the waterproof paper 5. Further, the flat portion 61 a of the lath net 61 is in a state of floating from the waterproof paper 5 by the concave portion 61 b and is disposed at the center of the mortar 62 in the thickness direction.
In the present embodiment, the lath net having a plurality of recesses 61b is used. However, the present invention is not limited to this, and it goes without saying that a flat lath net having no recesses may be used. Yes. Further, in the present embodiment, the wet exterior is described as an example of the exterior material 6, but the present invention is not limited to this, and a dry exterior material may be used.

As shown in an enlarged view in FIG. 2 (b), the carbon fiber sheet 4 is bonded to the lower edge 31 b on the outdoor side of the structural face material 3. The structural face material 3 is fixed to the lower frame 23 by a nail 7 that penetrates the lower edge 31 b of the structural face material 3 and the carbon fiber sheet 4 and penetrates into the lower frame 23.
Similarly, as shown in FIG. 2A, the structural face material 3 is passed through the upper edge 31a of the structural face material 3 and the carbon fiber sheet 4 by the nail 7 penetrating into the upper frame 22. It is fixed to the lower frame 23.

  In the case of a general wooden frame wall, when a horizontal force is applied, the upper and lower edges of the structural face material are first broken, but according to the wooden frame wall 1 according to this embodiment, the structural frame material The upper edge 31a and the lower edge 31b of the face material 3 are reinforced by the carbon fiber sheet 4 and are not easily broken. Therefore, since the integrity of the frame body 2 and the structural face material 3 is maintained, the wall magnification of the wooden frame assembly wall 1 can be improved.

Moreover, since the structural face material 3 is reinforced with the carbon fiber sheet 4, it does not rust as in the case of using a metal holding tape. Therefore, the structural yield strength does not decrease due to aging.
Moreover, since the carbon fiber sheet 4 has a small thickness, the wall thickness can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the element same as 1st Embodiment, and the overlapping description is abbreviate | omitted.
FIG. 3 is a cross-sectional view of the wooden frame wall according to the second embodiment.

  As shown in FIG. 3, the wooden frame wall 1 </ b> A according to the second embodiment is such that the lower frame 23 is made of engineered wood and the carbon fiber sheet 4 is bonded to the side surface of the lower frame 23 on the outdoor side. This is different from the first embodiment.

The lower frame 23 is formed of a so-called engineered wood formed by joining a plurality of wooden thin plates 23a stacked in the vertical direction to each other with an adhesive.
Moreover, the carbon fiber sheet 4 is bonded to the side surface of the lower frame 23 to prevent the thin plate 23a from being peeled off.

  According to such a configuration, even when the rupture (peeling) strength of the engineered wood is smaller than the rupture strength of the structural face material 3, the engineered wood is reinforced with the carbon fiber sheet 4 to hold the nail 7. As a result, the wall magnification of the wooden frame wall 1A can be increased.

In the second embodiment, the carbon fiber sheet 4 is also bonded to the lower edge 31b on the outdoor side of the structural face material 3, but the carbon fiber sheet 4 is bonded only to the side surface on the outdoor side of the lower frame 23. Also good.
Moreover, in 2nd Embodiment, although only the lower frame 23 was comprised with engineered wood, the vertical frame 21 and the upper frame 22 (refer FIG. 2) are comprised with engineered wood, and the carbon fiber is provided in the outdoor side surface. Needless to say, the sheet may be bonded. Furthermore, if the carbon fiber sheet 4 is installed on the upper, lower, left, and right edges of the structural face material 3 on the outdoor side, the wall magnification of the wooden frame wall 1A can be further increased.

Next, a third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the element same as 1st Embodiment, and the overlapping description is abbreviate | omitted.
Fig.4 (a) is sectional drawing of the wooden frame wall which concerns on 3rd Embodiment, (b) is the B section enlarged view of (a).

  As shown in FIG. 4, in the wooden frame wall 1B according to the third embodiment, the carbon fiber sheet 4 is formed wider than the upper frame 22 or the lower frame 23, and the water content of the structural face material 3 is increased. The point which is provided with the measuring device 8 which measures a rate mainly differs from the above-described first embodiment. The wooden frame wall 1B can detect the presence or absence of water leakage inside the wall.

  The carbon fiber sheet 4 of the third embodiment is formed wider than the upper frame 22 and the lower frame 23 as shown in FIG. Therefore, the lower end portion 41 a of the carbon fiber sheet 41 corresponding to the upper frame 22 extends downward from the lower end surface of the upper frame 22. The lower end portion 42 a of the carbon fiber sheet 42 corresponding to the lower frame 23 extends upward from the upper end surface of the lower frame 23.

As shown in FIG. 4B, the staple 63 for fixing the lath net 61 penetrates the waterproof paper 5 and the carbon fiber sheet 42 and penetrates the structural face material 3. Thereby, the carbon fiber sheet 42 corresponding to the lower frame 23 and the lath net 61 are electrically connected via the staple 63. Although illustration is omitted, the carbon fiber sheet 41 and the lath net 61 corresponding to the upper frame 22 are the same.
That is, the carbon fiber sheet 41 corresponding to the upper frame 22 and the carbon fiber sheet 42 corresponding to the lower frame 23 are electrically connected via the lath net 61 and the staples 63 (to allow energization).

The measuring device 8 is a device that measures the moisture content based on the change in the electrical resistance value (or current value or voltage value) of the one disposed between the two terminals 81 and 82. The measuring device 8 is, for example, a known moisture content measuring device, stores information in which the electrical resistance value and the moisture content of the structural surface material 3 are associated in advance, and the information is based on the measured electrical resistance value. The moisture content of the structural face material 3 is measured for reference and displayed.
One terminal 81 is a portion 32a in which the carbon fiber sheet 41 corresponding to the upper frame 22 is bonded to the outdoor side surface of the indoor side 32 surface of the structural face material 3 (see FIG. 4A). Is attached.
The other terminal 82 is a portion 32b (see FIG. 4B) in which the carbon fiber sheet 42 corresponding to the lower frame 23 is bonded to the outdoor surface of the indoor surface of the structural face material 3. ).

It continues and demonstrates the effect | action of the wooden frame assembly wall 1B which concerns on 3rd Embodiment.
Since the structural face material 3 is made of a wood-based material, the electrical resistance is large in a dry state, and when it contains moisture, the electrical resistance is smaller than that at the time of drying.
For this reason, when water leakage or the like occurs in the wooden frame wall 1B and the portions 32a and 32b to which the terminals 81 and 82 are connected in the structural face material 3 become wet, the electrical resistance value measured by the measuring device 8 Is small (or the current value or the voltage value is large), the change in the moisture content of the structural face material 3 can be measured, and eventually the leakage of the wooden frame wall 1B can be inspected.

  In addition, if the terminals 81 and 82 are wired for each of the plurality of wooden frame walls 1B installed in the building and the measuring device 8 is sequentially connected to this wiring at the time of water leakage inspection, all the wooden frame walls 1B are Water leakage inspection can be performed quickly.

  The preferred embodiment of the present invention has been described above with reference to the drawings. However, the present invention is not limited to this embodiment, and can be changed as appropriate without departing from the gist of the present invention.

  For example, in the first embodiment, the carbon fiber sheet 4 is bonded only to the outdoor-side surface 31 of the structural face material 3, but if the carbon fiber sheet is also bonded to the indoor-side surface, the structural face material 3. The breaking strength of can be further improved.

It is the perspective view which notched and showed a part of wooden frame frame wall concerning 1st Embodiment. (A) is the II sectional view taken on the line of FIG. 1, (b) is the A section enlarged view of (a). It is a partially expanded sectional view of the wooden frame wall which concerns on 2nd Embodiment. (A) is sectional drawing of the wooden frame wall which concerns on 3rd Embodiment, (b) is the B section enlarged view of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wooden frame wall 2 Frame 21 Vertical frame 22 Upper frame 23 Lower frame 3 Structural face material 4 Carbon fiber sheet 5 Waterproof paper 6 Exterior material 61 Lath net 62 Mortar 7 Nail (fixing member)

Claims (2)

A wooden structure including a plurality of vertical frames standing apart from each other, an upper frame connecting upper ends of the plurality of vertical frames, and a lower frame connecting lower ends of the plurality of vertical frames. The frame of
A wooden structural face material disposed on the outdoor side of the frame;
A carbon fiber sheet bonded to at least a portion overlapping the upper frame and the lower frame in the outdoor side surface of the structural face material, and
A plurality of fixing members that penetrate the carbon fiber sheet and the structural face material and penetrate the upper frame or the lower frame, respectively, and fix the structural face material to the frame body;
A measuring device for measuring the moisture content of the one disposed between the two terminals;
A lath net disposed on the outdoor side of the structural face material and electrically connecting a carbon fiber sheet corresponding to the upper frame and a carbon fiber sheet corresponding to the lower frame;
Attaching one terminal of the measuring device to the portion of the indoor side surface of the structural face material, to which the carbon fiber sheet corresponding to the upper frame is bonded to the outdoor side surface,
The other terminal of the measuring device is attached to a portion of the indoor side surface of the structural face material, to which the carbon fiber sheet corresponding to the lower frame is bonded to the outdoor side surface. Wooden frame wall. At least one of the lower frame and the upper frame is made of engineered wood,
The wooden frame wall according to claim 1, wherein another carbon fiber sheet is bonded to a side surface of the engineered wood on the structural face material side.

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