JP2011074645A - Exterior wall structure of wooden house, exterior wall construction method, and reform method of existing exterior wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently improve earthquake-resistant performance using an exterior wall face material and to propose a technique for efficiently introducing the exterior wall face material from a standpoint of the earthquake-resistant performance in an exterior wall structure having a clay wall inside a plastered wall such as a mortar exterior wall, including a reform method for changing an existing exterior wall into the exterior wall face material. <P>SOLUTION: In the exterior wall structure 10 of a wooden house, an exterior wall face material 7A is attached with a stopper 4A to a stud 3A functioning as a member playing a role of the earthquake-resistant performance of a wooden house. For the stud 3A, the face width 3W is set larger than the depth width 3D. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an outer wall structure for forming an outer wall of a building and an outer wall construction method.

  Conventionally, a technique for improving the earthquake resistance of a building by using an outer wall surface material such as ceramic siding is known (see Patent Document 1).

  As shown in FIG. 7A, the outer wall surface material is fastened by fixing a lateral trunk edge 93 between the pillars 91 and the intermediate pillars 92 and fixing the outer wall surface material to the trunk edge 93. It is known that 90 is fixed by a stopper such as a screw 94. In addition, such a form of fastening of the outer wall surface material is also adopted in a structure that uses a ventilator edge for exhausting moisture in the room or discharging rainwater.

  Further, as shown in FIG. 7 (b), in the conventional stud 92, the sectional width 92W is about 1/3 (about one third) of the expected width 92D. In the specification disclosed in paragraph 0064 of FIG. 14 and FIG. 14, the spacing width of the stud is 30 mm and the expected width is 105 mm.

  The reason why the width is smaller than the expected width in this way is that, conventionally, the studs are used to hold the outer wall, inner wall and the groundwork. Therefore, instead of the pillar, a material thinner than the pillar is used, and the direction is to match the indoor surface and the outdoor surface of the pillar and the inter-column, that is, to make the expected width of the pillar and the inter-column equal. . That is, with respect to the studs, the found width is inevitably set smaller than the expected width.

  Further, as shown in FIG. 8 (a), in an old wooden house having a long age, a soil wall 96 in which soil is applied to the ground consisting of a penetrating and small dance inside a painted wall such as a mortar outer wall 95 (exterior). There is known a configuration in which The interior side surface of the earth wall 96 also functions as an interior wall. In the reformation of the outer wall having such a configuration, the mortar outer wall 95 is removed and, as shown in FIG. It is done to stop. Alternatively, the earth wall 96 is also removed, and a column having an expected width substantially the same as that of the column 97 is set, so that a structure equivalent to that shown in FIGS. 7A and 7B is obtained.

JP 2008-231765 A

  However, in the conventional fastening form of the outer wall surface material 90 shown in FIGS. 7A and 7B, the outer wall surface material 90 is structured to be secured only to the trunk edge 93, and directly to the stud 92. Therefore, the force applied to the trunk edge 93 is transmitted to a column with a distance when considering transmission of force to the structural frame related to the seismic performance of the building. For this reason, with respect to effectively exhibiting the seismic performance that can be exhibited by the outer wall surface material 90 against the seismic force in the horizontal plane direction and the wind pressure in the horizontal plane direction, the structure reduces the effect. It has become.

  Further, in the configuration shown in FIGS. 7A and 7B, when the outer wall surface material 90 is directly fixed not only to the trunk edge 93 but also to the stud 92, how much the earthquake resistance performance is improved. There has been no discussion as to whether it can be done.

  Further, as shown in FIG. 8B, in an old wooden house having a long building age, the outer wall material 90 is fixed only to the trunk edge 93 even in the case of the form of reform as described above. Therefore, the structure is the same as in the case of the structure of FIGS. Further, in the configuration shown in FIG. 8, when the earth wall 96 is removed to have the same structure as that shown in FIGS. 7A and 7B, not only the earth wall 96 is removed but also the interior is reworked. Become.

  Therefore, in view of the above problems, the present invention effectively realizes the improvement of the earthquake resistance performance by the outer wall surface material, and is changed to the outer wall surface material in the outer wall structure having the earth wall inside the painted wall such as a mortar outer wall. In remodeling, we propose a technique to enable effective introduction of outer wall materials from the viewpoint of seismic performance.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, as described in claim 1,
The outer wall structure of the wooden house is configured such that the outer wall material is fixed to the studs that can function as members related to the earthquake resistance of the building by a stopper.

Moreover, as described in claim 2,
At the place where the stud is arranged,
The seam portion of the outer wall surface material adjacent to the left and right is arranged,
Each said outer wall surface material is respectively fixed with respect to the said stud by the said stopper, and both outer wall materials are integrated via a stud.

Moreover, as described in claim 3,
The space between the studs is set to be larger than the expected width.

Moreover, as described in claim 4,
Providing a stud between the upper and lower beam members;
A step of fastening the trunk edge to the outside of the outer space of the stud,
Arranging an outer wall surface material on the outer side of the trunk edge, and fixing the outer wall surface material to the stud,
The space pillar is an outer wall construction method in which the finding width is set larger than the finding width.

Moreover, as described in claim 5,
A method for renovating an existing outer wall by removing the existing outer wall and installing a new outer wall material,
Removing the existing outer wall;
Arranging the studs on the outside of the inner wall;
And a step of fastening the outer wall surface material to the stud.
The said stud is made into the reforming method of the existing outer wall by which a finding width is set larger than a finding width.

  As effects of the present invention, the following effects can be obtained.

That is, in the invention according to claim 1,
The outer wall material can be directly fixed to the studs that can function as a member related to the seismic performance of the building, and the seismic performance that the outer wall material can exert is the seismic force in the horizontal plane direction and the horizontal plane outer direction. It is possible to exert effectively against the wind pressure of.

In the invention according to claim 2,
Also in the joint part (vertical joint part) of the outer wall surface material, each outer wall surface material is directly fixed to a stud that can function as a member related to the earthquake resistance performance of the building, and the outer wall surface material is integrated. Can effectively exhibit seismic performance that can be exerted against seismic force in the horizontal plane direction and wind pressure in the horizontal plane direction.

In the invention according to claim 3,
By setting the apparent width to be larger than the expected width, it is possible to increase the cross-sectional secondary moment with respect to the force in the horizontal plane direction of the outer wall surface material as compared with the reverse setting. As a result, even if a seismic force in the horizontal plane direction acts on the outer wall material, and this force acts on the stud, it becomes possible to suppress the deflection of the stud, and the stud and the outer wall material are exhibited. It is possible to effectively improve the seismic performance of the outer wall structure by the synergistic effect of the seismic performance.

In the invention according to claim 4,
The outer wall material can be directly fixed to the studs that can function as a member related to the seismic performance of the building, and the seismic performance that the outer wall material can exert is the seismic force in the horizontal plane direction and the horizontal plane outer direction. It is possible to exert effectively against the wind pressure of.

In the invention according to claim 5,
The outer wall material can be directly fixed to the studs that can function as a member related to the seismic performance of the building, and the seismic performance that the outer wall material can exert is the seismic force in the horizontal plane direction and the horizontal plane outer direction. It is possible to exert effectively against the wind pressure of.

The figure which showed the whole structure of the outer wall structure which concerns on one Embodiment of this invention. (A) is a horizontal sectional view of the outer wall structure concerning one embodiment of the present invention. (B) is a figure explaining fastening of the outer wall surface material to a stud. (A) is a front view of the outer wall structure which concerns on one Embodiment of this invention. (B) is a front view shown about the example of the conventional outer wall structure. The figure shown about the structure in the Example of this invention. The figure shown about the structure in a comparative example. The figure shown about the example which applies this invention when reforming an exterior. (A) is a figure explaining the fastening of the conventional outer wall surface material. (B) is a figure shown about the prior art structural example in which the outer wall surface material is not fastened to the stud. (A) is a figure shown about the prior art example by which a dirt wall is arrange | positioned indoors. (B) is a figure shown about the form of reform using the outer wall surface material in the composition of (a).

FIG. 1 is a diagram showing an outer wall structure 10 of a wooden house according to an embodiment of the present invention.
As shown in FIG. 1, the beam members 1A and 1B are horizontally arranged on the upper and lower sides, and columns 2A and 2B are arranged in the vertical direction between the beam members 1A and 1B. In addition, between the pillars 2A and 2B, the pillars 3A, 3B, and 3C are arranged in the vertical direction. When the configuration shown in FIG. 1 is arranged on the first floor of the building, the beam member 1B functions as a base, and the term “beam member” includes the base.

  Further, as shown in FIG. 1, a moisture-permeable waterproof sheet 5 is stretched on the outside of the beam members 1A and 1B, the pillars 2A and 2B, and the intermediate pillars 3A, 3B, and 3C described above so as to cover these members. The And the outer periphery of this moisture-permeable waterproof sheet 5 is provided with trunk edges 6,6 ... (horizontal trunk edges), and these trunk edges 6,6 ... are the pillars 2A, 2B and the intermediate pillars 3A, 3B. -It can be fixed against 3C.

  Further, as shown in FIG. 1, outer wall surface materials 7A and 7B are disposed on the outdoor side of the trunk edges 6, 6,. This outer wall surface material is fixed to the spacers 3A, 3B, and 3C. In addition, as the outer wall material, face materials such as ceramic siding, ceramic siding, metal siding, ALC plate and the like can be applied, and regarding the mechanical strength, bending strength 690N defined in JIS A5422 is applicable. The above is preferable.

  Further, as shown in FIG. 1, the upper and lower ends of the studs 3A, 3B, and 3C are fixed to the beam members 1A and 1B, respectively. As a result, the inter-columns 3A, 3B, and 3C can smoothly transmit force to the beams 1A and 1B that are structural bodies related to the earthquake resistance performance of the building. In other words, the studs 3A, 3B, and 3C contribute to the improvement of the strength of the building and can function as members that are involved in the earthquake resistance.

  Further, as shown in FIGS. 2A and 2B, the trunk edge 6 is fixed to the spacer 3 </ b> A by a stopper 8. Furthermore, the outer wall surface material 7A is fastened to the spacer 3A by the stopper 4A. The stopper 4 </ b> A passes through the trunk edge 6 and reaches the intermediate pillar 3 </ b> A, whereby the outer wall surface material 7 </ b> A is also secured to the trunk edge 6. That is, the outer wall surface material 7A is fixed to both the trunk edge 6 and the inter-column 3A. The stoppers 4A and 8 can be screw-shaped or nail-shaped.

  And in the structure shown to Fig.2 (a) (b), it becomes the structure by which outer wall surface material 7A * 7B is directly fastened with respect to the pillar 3A which can function as a member in connection with the earthquake-resistant performance of a building, By integrating the two outer wall surface materials 7A and 7B adjacent to the trunk edge 6, the seismic performance that the outer wall surface materials 7A and 7B can exhibit is achieved by the seismic force in the horizontal plane direction and the wind pressure in the horizontal plane direction. It is possible to effectively exhibit the above.

  Further, as shown in FIGS. 2 (a) and 2 (b), the inter-column 3A has a width of 3W for integrating the two adjacent outer wall surface materials 7A and 7B in the horizontal cross-sectional dimension. , Twice the sum of the required end clearance MA for attaching the outer wall materials 7A and 7B and their stoppers 4A and 4B and the required end clearance MB of the torso 6 (at least 5 mm for wood) The above dimensions are preferable. Further, the found width 3W is set to be larger than the expected width 3D, and preferably, the found width 3W is set to be four times or less of the expected width 3D. .9 times (105 mm / 27 mm = 3.88...) The width of the studs is the width of the front surface (the surface facing the outside) when the studs are viewed from the front in the outdoor side. The expected width of the studs is the width of the studs on the outdoor side. It means the depth width when viewing from the front. Further, it is necessary to fix the spacer 6 to the horizontal member such as a beam by a method in which two N75 nails are fixed with a pulling strength higher than that of the diagonal nail specification.

  Thus, by setting the expected width 3W to be larger than the expected width 3D, for example, by setting the expected width 3W to about four times the expected width 3D, in the case of the reverse setting, that is, the expected width 3D It is possible to increase the cross-sectional secondary moment with respect to the force in the horizontal plane direction of the outer wall surface material 7A as compared with the case where the width is smaller than the finding width 3W. Thereby, even when a force (seismic force) in the horizontal plane direction acts on the outer wall surface material 7A and this force acts on the inter-column 3A, it becomes possible to suppress the deflection amount of the inter-column 3A. By the synergistic effect of the seismic performance exhibited by the outer wall material 7A, the seismic performance of the outer wall structure can be effectively improved.

  Alternatively, as shown in FIGS. 2 (a) and 2 (b), in the dimension of the horizontal cross section of the inter-column 3A, the finding width 3W of the inter-column 3A is substantially the same as the finding width 2W of the column 2A. Thus, it is good also as setting the finding width 3W larger than the expected width 3D by making the finding width 3W substantially the same as the finding width 2W of the pillar 2A.

  In addition, as will be described later, when the magnification (magnification of the finding width 3W to the expected width 3D) is set to about 3.9 times, the comparative example sets the magnification to about 0.26 (2.57). It has been demonstrated that a wall strength magnification of 1.09 times is obtained. 7 (a) and 7 (b), the finding width 92W is set to be smaller than the expected width 92D. As shown in FIG. 7, by setting the apparent width 3W to be larger than the expected width 3D, the cross-sectional secondary moment with respect to the force (earthquake force) in the horizontal plane direction of the outer wall surface material 7A is shown in FIGS. It is certain that it can be secured more than the conventional one shown in FIG.

  Therefore, the lower limit of the magnification is not verified for all magnifications, but from an economic point of view, at least twice is desirable, and sufficient effect (improvement of seismic performance) can be secured. Become. In addition, the upper limit of the magnification is not particularly limited, but if the expected width 3D is too thin, the stud may be damaged due to out-of-plane buckling, and the distribution of the material used as the stud may be reduced. From the viewpoint, further, from the viewpoint of adopting a standard product, it is preferable to make it within 4 times.

  In addition, as shown in FIGS. 2A and 2B, in the present embodiment, the joint portions 9 (vertical joint portions) of the outer wall surface materials 7A and 7B adjacent to the left and right are disposed at the positions where the studs 3A are disposed. The outer wall surface materials 7A and 7B are fixed to the studs 3A by the stoppers 4A and 4B, respectively.

  Thereby, in the joint part 9 (vertical joint part) of outer wall surface material 7A * 7B, each outer wall surface material 7A * 7B is directly fastened with respect to the pillar 3A which can function as a member in connection with the earthquake resistance performance of a building. It becomes a structure and it becomes possible to exhibit the earthquake resistance which outer wall surface material 7A * 7B can exhibit effectively with respect to the seismic force of a horizontal surface direction, and the wind pressure of a horizontal surface direction.

  Further, as shown in FIGS. 2 (a) and 2 (b), the finding width 3W of the inter-column 3A is determined by the end gap distance MA and the trunk edge 6 required when the outer wall surface materials 7A and 7B and the stoppers 4A and 4B are attached. It is preferable that the dimension is not less than twice the sum of the necessary end clearance MB (at least 5 mm in the case of wood). Generally, when the outer wall surface materials 7A and 7B are inorganic materials such as siding, the necessary gap space MA is about 25 mm to 40 mm, and the organic material is about 15 mm to 30 mm. The width 3W is preferably 60 mm or more for inorganic materials and 40 mm or more for organic materials.

  The upper limit of the width 3W of the inter-column 3A is preferably within the same dimension as the width MC of the column 2A.

The above is the embodiment of the present invention.
That is, like the outer wall structure 10 shown in FIGS. 1 and 2 (a) and 2 (b), the outer wall surface material 7A is fastened by the stopper 4A to the stud 3A which can function as a member related to the earthquake resistance performance of the building. The outer wall structure 10 of the wooden house is made.

  Moreover, as an outer wall construction method shown in FIG. 1 and FIGS. 2 (a) and 2 (b), a step of providing studs 3A, 3B, and 3C between upper and lower beam members 1A and 1B, and a chamber of the studs 3A, 3B, and 3C A step of fastening the barrel edge 6 to the outside, and an outer wall surface material 7A, 7B are arranged outside the barrel edge 6, and the outer wall surface material 7A, 7B is fastened to the studs 3A, 3B, 3C. And a process.

  And as shown to FIG. 2 (a) (b), it becomes the structure by which outer wall surface material 7A is directly fastened with respect to the pillar 3A which can function as a member in connection with the earthquake resistance performance of a building, and outer wall surface material 7A becomes It is possible to effectively exhibit seismic performance that can be exhibited against seismic force in the horizontal plane direction and wind pressure in the horizontal plane direction. In the present specification, “directly fastened” refers to a state in which the stopper 4A for fastening is directly related to both the outer wall surface material 7A and the intermediate pillar 3A. In the state of FIG. 2 (b), the trunk edge 6 exists between the inter-column 3A and the outer wall surface material 7A. Even in this case, the stopper 4A is directly connected to both the outer wall surface material 7A and the inter-column 3A. It is something that is involved.

  Further, as shown in FIG. 3 (a), according to the embodiment of the present invention, at the joint portion 9 (vertical joint portion) of the outer wall surface materials 7A and 7B, the outer wall surface materials 7A and 7B are seismic performance of the building. Even if the force P in the horizontal plane direction acts due to an earthquake or the like, the two outer wall surface materials 7A and 7B are one piece. Since it becomes the structure joined by the space | interval 3A, it becomes possible to also obtain the effect which suppresses the shift | offset | difference of outer wall surface material 7A * 7B, and the effect which suppresses deformation | transformation of the space pillar 3A. Further, since the two outer wall surface materials 7A and 7B are also joined by the trunk edge 6, the effect of suppressing the displacement between the outer wall surface materials 7A and 7B and the effect of suppressing the deformation of the trunk edge 6 are also obtained. It becomes possible. Thus, according to the embodiment of the present invention, it is possible to realize a configuration in which two sidings (outer wall surface materials) are jointed by a single pillar.

  On the other hand, in the case of the conventional example shown in FIG. 3B, the two outer wall surface materials 90A and 90B are joined only by the trunk edge 93, and the studs 92 may be involved in joining. Therefore, even if the trunk edge 93 is deformed, the outer wall surface materials 90A and 90B are displaced. As described above, in the conventional example, the two sidings (outer wall surface materials) are not joined by the single inter-column and are configured to be joined only by the trunk edge. In addition, since the trunk edge 93 (horizontal trunk edge) is generally composed of a thin and thin member, it may be easily deformed when a certain force P is applied.

  From the above, according to the configuration of FIG. 3A, it is possible to improve the seismic performance as compared with the conventional configuration of FIG.

<Examples and Comparative Examples>
Next, the effect of the configuration of the present invention will be described using an example to which the configuration of the present invention is applied and a comparative example. The main conditions are as follows.

(1) Specifications Tests were performed on the specifications of the examples and comparative examples. The main specifications are described below. The outline of the specification is shown in FIGS.
-Upper beam 21: cross section 105 mm x 180 mm, length 2730 mm: tree species = Yonematsu (common specification)
・ Base 22: Cross section 105mm x 105mm, Length 2730mm: Tree species = too much (common specification)
-Distance between upper beam and foundation: 2594mm (common specification)
・ Pillar 23: Cross section 105mm x 105mm, length 2594mm: Tree species = too much (common specification)
Interstitial column 24: cross section 105 mm × 27 mm, length 2594 mm: tree species = too much (Example)
Interstitial column 25: cross section 27 mm × 105 mm, length 2594 mm: tree species = too much (comparative example)
-Fastening to the upper beam and foundation of each stud: 2 N75 nails slanting specification-455mm spacing between the pillar and the stud (common specification)
・ Trim 26: 18mm x 50mm softwood structure plywood (common specification)
・ Body edge interval: 303mm (common specification)
・ Fastening of the body edge: CN65 nail: 303 mm pitch ・ Outer wall material 27: Ceramic siding: 18 mm thick x 455 mm wide x 2730 mm long (JISA5422 product)
・ Outer wall surface fixing: Stainless steel screw: Truss head φ5.0mm, L = 50mm: 4 turns, vertical direction 303mm pitch, upper and lower end horizontal direction 150mm pitch ・ Outer wall surface material tension: 4 sheets Are arranged vertically (arranged so that the longitudinal direction of the outer wall material is vertical)

Moreover, the outline | summary of the specification of an Example and a comparative example is shown below.

Moreover, an Example is an example which assumed the structure in FIG. 1 (except a moisture waterproof sheet).
Moreover, the comparative example arrange | positions the pillar 25 from which an expected width becomes larger than a found width by changing the direction of the pillar 24 of an Example.

(2) Test conditions The evaluation test is based on the in-plane shearing of the wall in accordance with the test method described in the “Testing and Evaluation Procedures for Wooden Bearing Walls and Their Magnification” established by the Japan Housing and Wood Technology Center. The test was conducted. The width between the test specimens was 1820 mm, and the column base was fixed.

(3) Test results Table 2 shows the test results.
In addition, the reference value is a value obtained by dividing the value of the example by the comparative example, and is an index indicating how much the example has improved the seismic performance (wall strength magnification) compared to the comparative example. It is.

(4) Evaluation Evaluation was performed by obtaining “wall strength magnification”.
“Wall strength magnification” is the wall strength magnification that conforms to “Aseismic Diagnosis and Reinforcement Design of Wooden Houses” of the Building Disaster Prevention Association. Specifically, it was obtained by using the ultimate strength Pu among the four strengths (yield strength Py, ultimate strength Pu, maximum strength Pmax, yield strength at the time of specific deformation) used for wall magnification evaluation. Specifically, 0.2 × (2 μ−1) ^1/2 × Pu was calculated using Pu obtained in the experiment, and a value obtained by dividing this by the width of the test body (outer wall surface material) was “wall strength. Sampling magnification ". Here, “μ” represents a plasticity ratio and is a value obtained from the relationship between the shear deformation angle and the load in the above experiment.

  As can be seen from the reference values obtained by dividing the examples in Table 2 by comparative examples, it can be confirmed that a high wall strength magnification can be obtained by changing the method of installing the studs and fixing the outer wall material to the studs. It was. Specifically, in the wall strength magnification, an increase of about 10% was confirmed.

<Other embodiments>
As described above, according to the embodiment, high earthquake resistance (wall strength magnification) can be obtained. And the form of this Example is applicable also when reforming an outer wall structure about the existing wooden house.

  In particular, as shown in FIGS. 6A, 6B, and 6C, a configuration having an inner wall 32 such as a soil wall on the indoor side of an existing outer wall 31 composed of a coated wall such as a mortar outer wall is used as an outer wall surface material 41A. In the case of renovation (renovation) using 41B, as shown in FIG. 6 (b), the existing outer wall 31 and the existing stud 33 are removed, and the new stud 34 is found in the same manner as in the above embodiment. As shown in FIG. 6C, the body edge 35 is fixed to the intermediate pillar 34 with a stopper 36, and the outer wall surface is further fixed to the intermediate pillar 34. By fixing the materials 41 </ b> A and 41 </ b> B with the stopper 37, the same configuration as the above-described embodiment can be obtained.

  As described above, in the configuration having the inner wall 32 on the indoor side of the existing outer wall 31, the existing outer wall 31 is removed and the new outer wall surface materials 41 </ b> A and 41 </ b> B are installed. 31, a step of disposing a spacer 34 on the outdoor side of the inner wall 32, and a step of fastening outer wall surface materials 41 </ b> A and 41 </ b> B to the spacer 34, The attached width is set to be larger than the found width.

  And in the form of such reform, the outer wall structure using the outer wall materials 41A and 41B is introduced without removing the inner wall 32 constituted by the earth wall in which soil is applied to the ground consisting of perforations and small dances. can do. In this way, it is possible to renovate without removing the inner wall, so it is possible to renovate the outer wall without adding any effort to the interior, as well as reducing labor. It will be possible to renovate at low cost and shorten the renovation period.

  In the configuration shown in FIG. 6 (a), the mortar wall is mainly conceivable for the existing outer wall 31 that can be remodeled. Siding, metal plates, etc. are also conceivable.

  In the embodiment described above, as for the outer wall material, conventionally, the bending fracture load of 690 N or more according to the standard of JIS A5422 is generally regarded as the bending fracture load of 900 N or more. It is preferable.

  Similarly, with regard to a screw for fixing the outer wall surface material, a screw having a diameter of about 2.3 mm to 2.9 mm and having a length of less than 40 mm to less than 50 mm has been conventionally used. As mentioned above, it is preferable to use the thing of 50 mm or more in length.

  Similarly, the fixing of the outer wall surface material is within the 303 mm pitch in the vertical direction corresponding to the arrangement of the trunk edge, and the lateral direction is within the 150 mm pitch for those arranged in the horizontal direction at the upper and lower end portions. It is preferable to do.

  Similarly, the arrangement interval in the vertical direction of the trunk edge is preferably within 303 mm, which is generally about 450 mm.

  Similarly, it is preferable to use a longer nail, such as CN65 or CN75, for the nail for fastening the trunk edge, which is conventionally defined only as a length of 60 mm or more. .

  Similarly, it is preferable to use a structural plywood having a higher bending rigidity as a material for the trunk edge than a conventional timber such as cedar or tsugi.

  As described above, in the present invention, as shown in FIG. 2B, the finding width 3W is set to be larger than the expected width 3D in the spacer 3A. On the other hand, conventionally, generally, the interior surface and the exterior surface of the pillar and the stud are made to coincide with each other, that is, the expected width of the pillar and the stud is made the same, and a barrel edge is attached to this, and the outer wall and the inner wall are attached to the trunk edge. Therefore, with regard to the studs, the finding width is inevitably set to be smaller than the expected width.

  In addition, conventionally, regarding the setting of the width of the studs and the width of the studs, regarding the fastening of the outer wall material, the contribution to the seismic performance was not considered. By setting the expected width and directly fixing the outer wall material to the pillars, the synergistic effect of the seismic performance exhibited by the outer pillars and the outer wall material is realized, and the earthquake resistance performance of the outer wall structure is effectively improved. To do.

  The configuration of the present invention can be applied to ensure the seismic performance in the outer wall structure of a newly built wooden house, and can also be applied to the case where the seismic performance is improved by reforming an existing wooden house.

1A Beam Material 1B Beam Material 2A Column 2B Column 3A Space Column 3B Space Column 3D Expected Width 3W Expected Width 4A Stopper 4B Stopper 4W Necessary End Space 6 Body Edge 7A Outer Wall Material 7B Outer Wall Material 8 Stopper 9 Joint 10 Exterior wall structure

Claims (5)

  The outer wall structure of a wooden house, in which the outer wall material is fastened to the studs that can function as members related to the earthquake resistance of the building. At the place where the stud is arranged,
The seam portion of the outer wall surface material adjacent to the left and right is arranged,
The outer wall materials are fixed to the studs by the stoppers, so that the outer wall materials are integrated via the studs.
The outer wall structure of a wooden house according to claim 1, wherein The space between the studs is set larger than the expected width,
The outer wall structure of a wooden house according to claim 1 or 2, characterized by the above. Providing a stud between the upper and lower beam members;
A step of fastening the trunk edge to the outside of the outer space of the stud,
Arranging an outer wall surface material on the outer side of the trunk edge, and fixing the outer wall surface material to the stud,
The outer wall construction method for a wooden house, in which the space is set to have a larger width than the width of the space. A method for renovating an existing outer wall by removing the existing outer wall and installing a new outer wall material,
Removing the existing outer wall;
Arranging the studs on the outside of the inner wall;
And a step of fastening the outer wall surface material to the stud.
The said outer pillar is a renovation method of the existing outer wall in which the finding width is set larger than the finding width.

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