JP6862785B2 - Reinforcement structure of wooden structure and reinforcement method - Google Patents

Description

The present invention relates to a reinforcing structure of a wooden structure and a reinforcing method.

Traditional wooden buildings in shrines and temples are located below the upper horizontal members 8 such as through elbows arranged along the horizontal direction that intersects the vertical direction, as shown in the schematic front view of FIG. It has a lower horizontal member 4 such as a head piercing arranged along the horizontal direction, and two vertical members 10 and 10 such as two braids arranged on both sides in the horizontal direction. Further, in the space SP having a horizontally long front view surrounded by the upper horizontal member 8, the lower horizontal member 4, and the two vertical members 10 and 10, the face material 9 such as a biwa plate (in FIG. 1). The dot pattern portion) is arranged at a predetermined position in the prospective direction (the direction intersecting the vertical direction and the horizontal direction and penetrating the paper surface in FIG. 1).

Reinforcement work may be performed on such traditional wooden buildings for the purpose of improving earthquake resistance. Regarding this point, Patent Document 1 describes the upper edge portion and the lower edge portion of the birch board 9. Is disclosed to regulate the horizontal displacement of each other by engaging both the through elbow tree 8 and the head piercing 4 with an engaging portion such as a groove. As a result, the biwa plate 9 is made to bear the horizontal force at the time of an earthquake to improve the seismic resistance.

Japanese Unexamined Patent Publication No. 2005-90224

On the other hand, in traditional wooden buildings, the members facing the outside are often important cultural properties that are prohibited from contact. In this regard, the above-mentioned biwa board 9 is a member that separates the outside and the inside in the prospective direction. is there. Therefore, important cultural properties are often located on the immediate outdoor side of the biwa board 9, or the biwa board 9 itself may be an important cultural property. It is generally difficult to provide a suitable engaging portion.

In this regard, if the upper and lower parts of the appropriate reinforcing members (not shown) are fixed to both the upper horizontal member 8 and the lower horizontal member 4 from the indoor side in the prospective direction, respectively, it is important to face the biwa plate 9 and the outdoors. It is thought that the building can be reinforced without touching any cultural properties.

Further, at the time of such reinforcement, it is conceivable that the reinforcing member is further fixed to the above-mentioned two vertical members 10 and 10 in addition to the upper horizontal member 8 and the lower horizontal member 4. There is a risk of inhibiting the effective effects that 10 and 10 can exert.

For example, when the two vertical members 10 and 10 are the braids 10 and 10 as described above, the braid 10 has a plurality of members 11, 12 and 13 such as the Daito 11 and the elbow tree 12 in the vertical direction. While being stacked, they are arranged between each other and engaged with each other with appropriate play or the like via an engaging element (not shown) such as a dougong. Therefore, in the event of an earthquake, the engaging members 11, 12, and 13 are allowed to move independently of each other to some extent, and as a result, the through elbow tree 8 supported by the structure 10 and the eaves (not shown) are used. It is said that the vibration damping action is generated by the member shaking quickly.

However, if the above-mentioned reinforcing member is fixed to the assembly 10, the members 11, 12, and 13 constituting the assembly 10 become difficult to move when the horizontal force is input at the time of an earthquake, and as a result, as a result. There is a risk that the above vibration damping action cannot be exhibited.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to make it possible to arrange a reinforcing structure on a wooden structure from one side in a prospective direction such as an indoor side, and the same wooden structure. The purpose is to prevent the above-mentioned reinforcing structure from restricting the movement of vertical members such as braids held by the body.

The invention shown in claim 1 for achieving such an object
The upper cross member arranged along the lateral direction intersecting the vertical direction and the lower cross member arranged along the lateral direction while being located below the upper cross member, and the lateral direction between each other. Surrounded by two vertical members arranged along the vertical direction, the upper horizontal member, the lower horizontal member, and the two vertical members, which are located on both sides of the horizontal direction at intervals of. It is a structure that reinforces a wooden structure having a face material whose normal direction is oriented in a prospective direction intersecting the vertical direction and the lateral direction while being arranged in a space.
A wooden top receiving material arranged at a position on one side of the face material in the prospective direction and fixed to the lower surface of the upper cross member with the first penetrating material.
A wooden underlaying material arranged at a position on one side of the face material and fixed to the upper surface of the lower cross member with a second penetrating material.
A wooden reinforcing surface arranged at a position on one side of the face material, with the upper part fixed to the upper receiving material by the third penetrating material and the lower part fixed to the lower receiving material by the fourth penetrating material. With wood,
The upper receiving material, the lower receiving material, and the reinforcing face material are not fixed to the two vertical members.

According to the invention shown in claim 1, any of the three members of the upper receiving material, the lower receiving material, and the reinforcing face material of the reinforcing structure is located on one side of the facing material in the prospective direction. It is arranged in. Therefore, the reinforcing structure can be arranged on the wooden structure from one side in the prospective direction without any problem.
Further, none of these three members, the upper receiving material, the lower receiving material, and the reinforcing face material, is fixed to the two vertical members. Therefore, it is possible to prevent the reinforcing structure from restricting the movement of these two vertical members.

The invention shown in claim 2 is a reinforcing structure of the wooden structure according to claim 1.
The upper receiving material and the lower receiving material face each other with a vertical gap between them.
The upper receiving material has a dent portion dented on the other side in the prospective direction in a lower portion on the one side surface in the prospective direction.
The lower receiving material has a dent portion dented on the other side in the prospective direction on the upper portion on the one side surface in the prospective direction.
The central portion of the reinforcing face material in the vertical direction has a portion protruding from the upper portion and the lower portion to the other side in the prospective direction.
The upper portion and the lower portion of the reinforcing face material are in contact with the bottom surface of the dent portion of the upper receiving material and the bottom surface of the dent portion of the lower receiving material, respectively.
The protruding portion of the central portion of the reinforcing surface material is inserted into the gap between the upper receiving material and the lower receiving material, and the lower surface of the upper receiving material and the upper surface of the lower receiving material are inserted. It is characterized in that it is in contact with.

According to the second aspect of the present invention, the upper portion and the lower portion of the reinforcing face material are in contact with the bottom surface of the dented portion of the upper receiving material and the bottom surface of the dented portion of the lower receiving material, respectively. Therefore, the reinforcing face material is easily fixed to the upper receiving material and the lower receiving material by penetrating the third penetrating material and the fourth penetrating material into the upper part and the lower part of the reinforcing face material from one side in the above-mentioned prospective direction, respectively. It will be possible.
Further, the protruding portion of the reinforcing face material is in contact with the lower surface of the upper receiving material and the upper surface of the lower receiving material. Therefore, if the lower cross member is horizontally displaced in the lateral direction relative to the upper cross member during an earthquake, the rotational moment around the axis along the expected direction acts on the reinforcing face material. Even in such a case, the rotational moment can be effectively countered based on the above-mentioned contact. As a result, the reinforced structure can exhibit high seismic resistance.

The invention shown in claim 3 is a reinforcing structure of the wooden structure according to claim 2.
The head of the first penetrating material is located at the entrance corner of the upper end edge of the bottom surface of the dented portion of the upper receiving material.
The head of the second penetrating material is located at the entrance corner of the lower end edge of the bottom surface of the dented portion of the lower receiving material.
The head of the first penetrating material and the head of the second penetrating material are covered with the upper portion and the lower portion of the reinforcing face material from one side thereof, respectively.

According to the third aspect of the present invention, the head of the first penetrating material and the head of the second penetrating material located at each of the above-mentioned entrance corners are each of the reinforcing face material from one side in the prospective direction. Covered at the top and bottom. Therefore, it is possible to hide the traces of reinforcement by making the head invisible from one side in the prospective direction, and thereby it is possible to suppress deterioration of the appearance of the wooden structure after reinforcement.

The invention shown in claim 4 is a reinforcing structure of the wooden structure according to any one of claims 1 to 3.
The first penetrating material is penetrated upward or diagonally upward and facing the other side in the prospective direction.
The second penetrating material is characterized in that it is penetrated downward or in an oblique direction facing downward and the other side in the prospective direction.

According to the invention shown in claim 4, the first penetrating material and the second penetrating material are each penetrated in the above-mentioned directions. Therefore, the first penetrating material and the second penetrating material can be penetrated into the upper receiving material and the lower receiving material from one side in the prospective direction without any problem.

The invention shown in claim 5 is a reinforcing structure of the wooden structure according to any one of claims 1 to 4.
A plurality of the third penetrating materials penetrated in the prospective direction are arranged side by side in the lateral direction, and the positions of at least one of the third penetrating materials in the vertical direction are adjacent to each other in the lateral direction. It is deviated from the vertical position of another third penetrating material.
A plurality of the fourth penetrating materials penetrated in the prospective direction are arranged side by side in the lateral direction, and the positions of at least one of the fourth penetrating materials in the vertical direction are adjacent to each other in the lateral direction. It is characterized in that it deviates from the vertical position of another fourth penetrating material.

According to the invention of claim 5, at least one set of third intruding materials adjacent to each other in the horizontal direction are displaced from each other in the vertical direction, and similarly, at least one set of adjacent members in the horizontal direction are adjacent to each other. The fourth penetrating materials are displaced from each other in the vertical direction. Therefore, at the time of an earthquake, the horizontal force that can act on the reinforcing face material, the upper receiving material, and the lower receiving material can be dispersed in the vertical direction through the third penetrating material or the fourth penetrating material. As a result, it is possible to prevent defects such as cracks in the reinforcing surface material, the upper receiving material, and the lower receiving material, which may occur due to the horizontal force acting excessively concentrated at the same position in the vertical direction. As a result, the strength of the reinforcing structure can be increased.

The invention shown in claim 6 is a reinforcing structure of the wooden structure according to claim 5.
The wood grain of at least one of the reinforcing face material, the upper receiving material, and the lower receiving material is along the lateral direction.

According to the invention shown in claim 6, since the grain of at least one member of the reinforcing face material, the upper receiving material, and the lower receiving material is along the lateral direction, the member is placed in one of the prospective directions. It can improve the appearance when viewed from the side. However, if the grain of wood is along the horizontal direction, damage such as cracking may be promoted at the positions of the third penetrating material and the fourth penetrating material when a horizontal force is applied. In addition, the vertical positions of the third penetrating material are dispersed in the vertical direction, and the vertical positions of the fourth penetrating material are also dispersed in the vertical direction. Therefore, it is possible to prevent damage such as cracking of the reinforcing face material, the upper receiving material, and the lower receiving material while improving the appearance as described above.

The invention shown in claim 7 is a reinforcing structure of the wooden structure according to any one of claims 1 to 6.
The one-sided surface of the upper receiving member is located on the other side in the prospective direction with respect to the one- sided surface of the upper cross member at a boundary position with the one-sided surface of the upper cross member. Ori,
The one side surface of the lower cross member is located on the other side of the one side surface of the lower cross member at the boundary position with the one side surface of the lower cross member. It is a feature.

According to the invention of claim 7, the person who sees the reinforcing structure from one side in the prospective direction can feel the same depth feeling as in the case of the face material. That is, the upper receiving material and the lower receiving material related to the reinforcing structure can also appear to be retracted to the other side in the above-mentioned prospective direction from the upper horizontal member and the lower horizontal member. As a result, the upper receiving material and the lower receiving material can be visually recognized by the viewer as if they were the face materials, and as a result, the discomfort of appearance that the reinforcing structure can give can be reduced.

The invention shown in claim 8 is a reinforcing structure of the wooden structure according to claim 7.
The upper surface of the reinforcing face material is in contact with the lower surface of the upper receiving material, and the lower surface of the reinforcing surface material is in contact with the upper surface of the lower receiving material.
Whether the one side surface of the reinforcing face material is located on the one side of the one side surface of the top receiving material at the boundary position with the one side surface of the top receiving material. Or it is located at the same position in the prospective direction.
Whether the one side surface of the reinforcing face material is located on the one side of the one side surface of the under receiving material at the boundary position with the one side surface of the under receiving material. Alternatively, it is characterized in that it is located at the same position in the prospective direction.

According to the eighth aspect of the invention, when there is a restriction that the upper receiving material is retracted to the other side in the prospective direction from the upper horizontal member as in the seventh aspect, the lower surface of the upper receiving material is provided. Can be brought into contact with the upper surface of the reinforcing face material in as large an area as possible. Similarly, when there is a restriction that the lower receiving material is retracted to the other side in the prospective direction from the lower horizontal member as in claim 7, the upper surface of the lower receiving material is reinforced with an area as large as possible. It can be brought into contact with the lower surface of the face material. Therefore, if the lower cross member is horizontally displaced in the lateral direction relative to the upper cross member during an earthquake, the rotational moment around the axis along the expected direction acts on the reinforcing face material. Even in such a case, the rotational moment can be effectively countered based on the above-mentioned contact. As a result, the reinforced structure can exhibit high seismic resistance.

The invention shown in claim 9 is
The upper cross member arranged along the lateral direction intersecting the vertical direction and the lower cross member arranged along the lateral direction while being located below the upper cross member, and the lateral direction between each other. It is a method of reinforcing a wooden structure having two vertical members arranged along the vertical direction while being located on both sides in the horizontal direction at intervals of.
An upper receiving material fixing step of fixing the upper surface of the wooden upper receiving material with the first penetrating material while abutting the lower surface of the upper horizontal member from one side in the vertical direction and the prospective direction intersecting the lateral direction.
A step of fixing the lower receiving material with a second penetrating material while abutting the lower surface of the wooden lower receiving material on the upper surface of the lower cross member from the one side in the prospective direction.
While the wooden reinforcing face material is brought into contact with the upper receiving material and the lower receiving material from the one side in the prospective direction, the upper portion of the reinforcing face material is fixed to the upper receiving material with the third penetrating material. It has a reinforcing face material fixing step of fixing the lower part of the reinforcing face material to the lower receiving material with the fourth penetrating material.
In the upper receiving material fixing step, the lower receiving material fixing step, and the reinforcing face material fixing step, the upper receiving material, the lower receiving material, and the reinforcing face material are not fixed to the two vertical members. It is characterized by.

According to the invention shown in claim 9, the upper receiving material and the lower receiving material are applied to the corresponding upper horizontal member and lower horizontal member in the wooden structure from one side in the prospective direction, respectively. It is abutted and fixed, and a wooden reinforcing face material is abutted and fixed to these upper receiving material and lower receiving material from one side in the prospective direction. Therefore, the wooden structure can be reinforced promptly from the above one side.
Further, in such reinforcement, none of the upper receiving material, the lower receiving material, and the reinforcing face material is fixed to the two vertical members. Therefore, it is possible to prevent the reinforcing structure from restricting the movement of these two vertical members.

According to the present invention, the reinforcing structure can be arranged on the wooden structure from one side in the prospective direction such as the indoor side, and the reinforcing structure does not regulate the movement of vertical members such as braids of the wooden structure. Can be done.

It is a schematic front view of a traditional wooden building. It is a schematic front view of the wooden structure 1 before arranging the reinforcing structure 20 of this embodiment. It is a schematic front view which shows the reinforcement target part of the wooden structure 1 after arranging the reinforcement structure 20 of this embodiment in an enlarged manner. It is sectional drawing BB in FIG. 3A.

=== This embodiment ===
2 to 3B are explanatory views of a wooden structure 1 provided with the reinforcing structure 20 of the present embodiment. FIG. 2 is a schematic front view of the wooden structure 1 before the reinforcing structure 20 is arranged. Further, FIG. 3A is a schematic front view showing an enlarged portion of the wooden structure 1 to be reinforced after the reinforcing structure 20 is arranged, and FIG. 3B is a sectional view taken along line BB in FIG. 3A.

In the following, the three directions orthogonal to each other are referred to as "vertical direction", "horizontal direction", and "expected direction". Then, in this example, the lateral direction and the prospective direction are oriented in the horizontal direction, respectively. Further, one side in the prospective direction described in the claims corresponds to the "indoor side" of the wooden structure 1 to be reinforced, and the other side corresponds to the "outdoor side". Incidentally, FIG. 3A is a schematic front view of the reinforcing structure 20 when viewed from the indoor side in the prospective direction.

As shown in FIG. 2, the wooden structure 1 reinforced by the reinforcing structure 20 of the present embodiment forms a part of an existing wooden building. Here, the wooden structure 1 has a pair of pillars 2 and 2 in the horizontal direction, a head nuki 4 arranged in the horizontal direction, and a ground cover 6 arranged in the horizontal direction as an existing framework. And have. The pillars 2 and 2, the head nuki 4 and the ground cover 6 are connected to each other at the ends 2e, 4e and 6e by an appropriate fitting structure such as a tenon and a mortise.

Further, in this example, the braid 10 is provided on the upper surface 2es of the upper end portion 2e of each pillar 2. Then, a through elbow tree 8 is hung along the lateral direction between the two braids 10 and 10 arranged in the horizontal direction, whereby the same through elbow tree 8 is hung on the two braids 10 and 10. It is supported.

In the example of FIG. 2, the braid 10 has a dowel 11, an elbow tree 12, and a winding dowel 13 in this order from the bottom, and the members 11, 12, and 13 are adjacent to each other in the vertical direction. It is connected to the member by a dowel (not shown) with a predetermined play or the like. For example, the Daito 11 is connected to the upper end portion 2e of the pillar 2 adjacent to the lower side by a dowel with a predetermined play or the like, and the elbow tree 12 and the winding dowel 13 located above the dowel 11 have a predetermined play or the like in sequence. It is connected by a dowel. Further, the winding dougong 13 is connected to the through elbow tree 8 and the eaves (not shown) adjacent to the roll dowel 13 with a dowel with a predetermined play or the like, whereby the braid 10 supports the through elbow tree 8 and the eaves. There is. Therefore, the Daito 11, Hijiki 12, and Makito 13 that make up the structure 10 are allowed to move independently of each other to some extent during an earthquake, and as a result, the through elbows supported by the structure 10 are used. It is possible to exert a predetermined damping action in collaboration with 8 and the eaves. By the way, instead of the above-mentioned dowel, it may be connected with a tenon.

On the other hand, in the space SP having a horizontally long front view surrounded by the head nuki 4, the through elbow tree 8, and the two braids 10 and 10, the biwa plate 9 (corresponding to the face material and having a dot pattern in FIG. 2) However, the space SP is provided so as to partition the space SP into the indoor side and the outdoor side so that the normal direction of the biwa plate 9 is directed to the prospective direction. For example, the lower edge portion 9ed and the upper edge portion 9eu of the biwa plate 9 are inserted into the large inserts 4suk and 8sdk (FIG. 3B) provided in a groove shape on the upper surface 4su of the head nuki 4 and the lower surface 8sd of the through elbow tree 8, respectively. As a result, the biwa board 9 is attached to the head nuki 4 and the through elbow tree 8 with a predetermined play or the like.

In such a wooden structure 1, the portion to be reinforced in which the reinforcing structure 20 of the present embodiment is arranged is the portion of the space SP provided with the biwa plate 9, that is, the head piercing 4 (corresponding to the lower cross member). ), The through elbow tree 8 (corresponding to the upper horizontal member) and the two braids 10 and 10 (corresponding to the two vertical members). Part).

As shown in FIGS. 3A and 3B, the reinforcing structure 20 includes a wooden upper receiving member 30 fixed to the lower surface 8sd of the through elbow tree 8 by the first penetrating material 71, and the upper surface of the head penetrating 4 by the second penetrating material 72. A wooden underlaying material 40 fixed to 4su, and a wooden reinforcement in which the upper part 50u is fixed to the upper receiving material 30 by the third penetrating material 73 and the lower part 50d is fixed to the under receiving material 40 by the fourth penetrating material 74. It has a face material 50 and.

As is clear from FIG. 3B, all the members of the upper receiving material 30, the lower receiving material 40, and the reinforcing surface material 50 are arranged at a position on the indoor side of the biwa plate 9 in the prospective direction. .. Therefore, the reinforcing structure 20 can be arranged in the wooden structure 1 from the indoor side in the prospective direction without any problem. As a result, even if an important cultural property whose contact is prohibited exists at a position on the outdoor side including the position of the biwa plate 9, the reinforcing structure 20 can be arranged without any problem.

Further, none of the members of the upper receiving member 30, the lower receiving member 40, and the reinforcing face member 50 are fixed to the two braids 10 and 10 of FIG. 3A. Therefore, the movement of these two braids 10 and 10 can be prevented from being regulated by the reinforcing structure 20, whereby even after the wooden structure 1 is reinforced, the braid 10 can be passed through without any problem. It is possible to exert a predetermined damping action in collaboration with 8 and the eaves.

Here, when the upper receiving material 30, the lower receiving material 40, and the reinforcing surface material 50 are connected and integrated with each other as "the main body portion 20H of the reinforcing structure 20", as shown in FIG. 3A. The shape of each portion on both sides in the lateral direction of the main body portion 20H has a shape corresponding to the shape of the inner portion in the lateral direction in the adjacent braid 10 corresponding to the outer side in the lateral direction. Therefore, the fact that the main body portion 20H has such a shape also means that the upper receiving material 30, the lower receiving material 40, and the reinforcing face material 50 forming the main body portion 20H do not interfere with the assembly 10. It effectively contributes to the fact that the space SP having a horizontally long front view can be quickly arranged from the indoor side in the prospective direction.

Further, for each of the wood types of the upper receiving material 30, the lower receiving material 40, and the reinforcing face material 50, oak, cypress, cedar, and the like can be exemplified. Then, which kind of wood is used is appropriately determined according to the proof stress required for the reinforcing structure 20.

Hereinafter, the upper receiving material 30, the lower receiving material 40, and the reinforcing surface material 50 forming the main body portion 20H of the reinforcing structure 20 will be described.

As shown in FIG. 3B, the upper receiving material 30 has a dented portion 30h dented on the outdoor side over the entire area of the lower portion 30sid on the indoor side surface 30si (corresponding to one side surface) in the prospective direction. Have. Specifically, as shown in FIG. 3B, when the upper receiving material 30 is viewed from the side, the surface 30sx on the outdoor side in the prospective direction of the upper receiving material 30 is a flat surface over the entire surface. The thickness of the lower portion of the receiving material 30 in the prospective direction is thinner than that of the upper portion. Therefore, with respect to the indoor surface 30si in the prospective direction, the lower portion 30sid is recessed toward the outdoor side rather than the upper portion 30siu, whereby the lower portion 30sid on the indoor surface 30si of the receiving member 30 is the same. Is a dented portion 30h in the shape of a horizontally long strip in the front view (FIG. 3A).

Then, as shown in FIG. 3B, the first wood screw 71 as the first penetrating material 71 is attached to the inside corner portion 30hbc of the upper end edge of the bottom surface 30hb of the dented portion 30h in an oblique direction facing the outdoor side and upward. The tip of the shaft portion 71a of the first wood screw 71 in the screwing direction reaches the upper through elbow tree 8. Therefore, the upper support member 30 is fixed to the through elbow tree 8 so as to be relatively immovable based on the first wood screw 71.

Further, the first wood screw 71 is screwed into the corner portion 30hbc of the dent portion 30h as described above. Therefore, in the screwed-in completed state as shown in FIG. 3B, the head 71h of the first wood screw 71 is also located at the corner portion 30hbc, but here, the bottom surface 30hb of the dent portion 30h is used for reinforcement described later. The upper portion 50u of the face material 50 is in contact with the indoor side in the prospective direction. As a result, the head 71h of the first wood screw 71 is covered with the upper portion 50u of the reinforcing face material 50 from the indoor side. Therefore, the head 71h can be made invisible from the indoor side to hide the traces of the reinforcement, and thereby it is possible to suppress the deterioration of the appearance of the reinforced wooden structure 1.

In the example of FIG. 3A, four or more such first wood screws 71 are provided side by side as a plurality of examples at a predetermined pitch in the lateral direction, but the number of such first wood screws 71 is not limited to four or more.

As shown in FIG. 3B, the lower receiving material 40 has a dented portion 40h dented on the outdoor side over the entire area of the upper portion 40siu on the indoor side surface 40si in the prospective direction. Specifically, as shown in FIG. 3B, when the underlaying material 40 is viewed from the side, the surface 40sx on the outdoor side in the prospective direction of the underlaying material 40 is a flat surface over the entire surface. The thickness of the upper portion of the lower receiving material 40 in the prospective direction is thinner than that of the lower portion. Therefore, with respect to the indoor side surface 40si (corresponding to one side surface) in the prospective direction, the upper portion 40siu is retracted to the outdoor side rather than the lower portion 40sid, whereby the chamber of the lower receiving material 40 is retracted. The upper portion 40siu on the inner surface 40si is a dented portion 40h in the shape of a horizontally long strip in the front view (FIG. 3A).

Then, as shown in FIG. 3B, the second wood screw 72 as the second penetrating material 72 is provided on the outdoor side and in the diagonal direction facing downward at the entrance corner portion 40hbc of the lower end edge of the bottom surface 40hb of the dented portion 40h. The tip of the shaft portion 72a of the second wood screw 72 in the screwing direction reaches the lower head penetration 4. Therefore, the lower receiving member 40 is fixed to the head nuki 4 based on the second wood screw 72 so as to be relatively immovable.

Further, the second wood screw 72 is screwed into the corner portion 40hbc of the dent portion 40h as described above. Therefore, in the screwed-in completed state as shown in FIG. 3B, the head 72h of the second wood screw 72 is also located at the corner 40hbc, but here, the bottom surface 40hb of the dented portion 40h is for reinforcement described later. The lower portion 50d of the face material 50 is in contact with the indoor side in the prospective direction. As a result, the head 72h of the second wood screw 72 is covered with the lower portion 50d of the reinforcing face material 50 from the indoor side. Therefore, the head 72h can be made invisible from the indoor side to hide the traces of the reinforcement, and thereby it is possible to suppress the deterioration of the appearance of the reinforced wooden structure 1.

In the example of FIG. 3A, five or more such second wood screws 72 are provided side by side as a plurality of examples at a predetermined pitch in the lateral direction, but the number of such second wood screws 72 is not limited to five or more.

Here, preferably, as shown in FIG. 3B, the upper portion 30si on the indoor side surface 30si of the upper receiving member 30 corresponds to the indoor side surface 8si (corresponding to one side surface) of the through elbow tree 8 adjacent above the upper portion 30si. ) At the boundary position Pb8, it is preferable that the through elbow tree 8 is located on the outdoor side of the indoor side surface 8si, and similarly, the lower portion 40side of the underlaying material 40 on the indoor side surface 40si is also At the boundary position Pb4 with the indoor side surface 4si (corresponding to one side surface) of the head piercing 4 adjacent to the lower side thereof, it is preferable that the head piercing 4 is located on the outdoor side of the indoor side surface 4si of the head piercing 4.
Then, in this case, as shown in FIG. 3A, the person who sees the reinforcing structure 20 from the indoor side in the prospective direction can feel the same sense of depth as in the case of the biwa plate 9. That is, the upper receiving material 30 and the lower receiving material 40 related to the reinforcing structure 20 can be made to appear to be retracted to the outdoor side in the prospective direction from the through elbow tree 8 and the head nuki 4, respectively. Therefore, the viewer can visually recognize the upper receiving material 30 and the lower receiving material 40 as if they were a part of the biwa plate 9, thereby reducing the visual discomfort that the reinforcing structure 20 may give. It becomes.

As described in part with reference to FIG. 3B, the reinforcing face material 50 integrates the upper portion 50u, the lower portion 50d, and the central portion 50c located between the upper portion 50u and the lower portion 50d in the vertical direction. Have in. Further, as shown in FIG. 3A, each of the upper 50u, the central 50c, and the lower 50d in front view has a horizontally long strip shape. Further, when viewed from the lateral direction as shown in FIG. 3B, the central portion 50c has a portion 50cp protruding to the outdoor side in the prospective direction from the upper portion 50u and the lower portion 50d.
When the upper portion 50u and the lower portion 50d are in contact with the bottom surface 30hb of the dented portion 30h of the upper receiving material 30 and the bottom surface 40hb of the dented portion 40h of the lower receiving material 40, the protruding portion 50cp is above. While being inserted into the front view horizontally long strip-shaped gap GP formed between the receiving material 30 and the lower receiving material 40, it is in contact with the lower surface 30sd of the upper receiving material 30 and the upper surface 40su of the lower receiving material 40 (FIG. 3B).
Further, in such an abutting state, as shown in FIG. 3B, a third wood screw 73 is screwed into the upper portion 50u of the reinforcing face material 50 as the third penetrating material 73 from the indoor side in the prospective direction along the prospective direction. The tip of the shaft portion 73a of the third wood screw 73 in the screwing direction reaches the upper receiving member 30 adjacent to the outdoor side of the upper portion 50u.
Similarly, a fourth wood screw 74 is screwed into the lower portion 50d of the reinforcing face material 50 as a fourth penetrating material 74 from the indoor side in the prospective direction along the prospective direction, and the shaft portion of the fourth wood screw 74 is screwed in. The tip of the 74a in the screwing direction reaches the lower receiving member 40 adjacent to the outdoor side of the lower portion 50d.
Therefore, the three members of the upper receiving material 30, the reinforcing surface material 50, and the lower receiving material 40 are fixed so as not to be relatively movable with each other, whereby the three members 30, 40, 50 are horizontal to each other. Power is transmitted quickly. As a result, the three members 30, 40, and 50 can function as the main body 20H of the reinforcing structure 20 described above without any problem.

Incidentally, as shown in FIG. 3A, a plurality of the third wood screw 73 and the fourth wood screw 74 are arranged side by side in the horizontal direction on the upper portion 50u and the lower portion 50d of the reinforcing face material 50, respectively. In this example, the vertical position of at least one third wood screw 73 is deviated from the vertical position of another laterally adjacent third wood screw 73, and similarly, of at least one fourth wood screw 74. The vertical position is deviated from the vertical position of another fourth wood screw 74 adjacent to each other in the horizontal direction.
To be more precise, in this example, all the third wood screws 73, 73 ... Are arranged in a so-called staggered arrangement in which the positions of all the third wood screws 73, 73 ... Are displaced in the vertical direction with respect to the third wood screws 73 adjacent in the horizontal direction. Further, as for the fourth wood screw 74, all the fourth wood screws 74, 74 ... Are arranged in a staggered arrangement in which the positions in the vertical direction are deviated from the fourth wood screw 74 adjacent in the lateral direction.

Therefore, in the event of an earthquake, the horizontal force that can act on the reinforcing face material 50, the upper receiving material 30, and the lower receiving material 40 can be dispersed in the vertical direction via the third wood screw 73 and the fourth wood screw 74. That is, it is possible to prevent the horizontal force from acting excessively concentrated at the same position in the vertical direction. As a result, it is possible to prevent damage such as cracking of the reinforcing face material 50, the upper receiving material 30, and the lower receiving material 40.

Further, in this example, although not shown, the grain of at least one member of the reinforcing face member 50, the upper receiving member 30, and the lower receiving member 40 is along the lateral direction, and more specifically, The grain of all members 30, 40, 50 is along the lateral direction. Therefore, the appearance of the member when viewed from the indoor side in the prospective direction can be improved.
However, if the grain is along the horizontal direction, breakage such as cracking may be promoted at the positions of the third wood screw 73 and the fourth wood screw 74 when the horizontal force acts as described above. The vertical positions of the third wood screw 73 are dispersed in the vertical direction, and the vertical positions of the fourth wood screw 74 are also dispersed in the vertical direction. Therefore, it is possible to effectively suppress damage such as cracks in the reinforcing face material 50, the upper receiving material 30, and the lower receiving material 40 while improving the appearance as described above.

In the example of FIG. 3B, the head 73h of the third wood screw 73 is located on the indoor side surface 50si (corresponding to one side surface) in the upper portion 50u of the reinforcing surface material 50, and similarly. The head portion 74h of the fourth wood screw 74 is located on the indoor side surface 50si (corresponding to one side surface) in the lower portion 50d of the reinforcing surface material 50. Therefore, as shown in FIG. 3A, the heads 73h and 74h can be seen from the indoor side, which can lead to deterioration of the appearance.
However, in this regard, the area of the top surface of the head 73h of the third wood screw 73 and the area of the top surface of the head 74h of the fourth wood screw 74 are the area of the top surface of the head 71h of the first wood screw 71 and the area of the top surface of the head 71h of the first wood screw 71. It is smaller than the area of the top surface of the head 72h of the second wood screw 72. Therefore, the appearance when the reinforcing structure 20 is viewed from the indoor side is compared with the case where the wood screws of the same size as the first and second wood screws 71 and 72 are used instead of the third wood screw 73 and the fourth wood screw 74. Deterioration can be suppressed. Further, in this example, as described above, for the heads 71h and 72h of the first wood screw 71 and the second wood screw 72 having a larger top surface area, the upper portion 50u and the lower portion 50d of the reinforcing face material 50 are used. It is hidden invisible from the inside of the room in the prospective direction. Therefore, this also contributes to the suppression of deterioration of the appearance of the reinforced wooden structure 1.

On the other hand, as described above with reference to FIG. 3B, when the three members of the upper receiving material 30, the reinforcing surface material 50, and the lower receiving material 40 are connected and integrated, the central portion 50c of the reinforcing surface material 50 The portion 50 cp protruding to the outdoor side from the upper portion 50u and the lower portion 50d is inserted into the front view horizontally long band-shaped gap GP between the upper receiving material 30 and the lower receiving material 40, and the lower surface 30sd of the upper receiving material 30. And is in contact with the upper surface 40su of the lower receiving material 40.

Therefore, if, at the time of an earthquake, the head nuki 4 is horizontally displaced in the lateral direction relative to the through elbow tree 8, the rotational moment M (FIG. 3A) around the axis Cm along the expected direction is generated. Even when it acts on the reinforcing face material 50, it can effectively counter the rotational moment M based on the above contact. As a result, the reinforcing structure 20 can exhibit high seismic resistance.

Further, in such an abutting state, as shown in FIG. 3B, the outdoor side surface 50usx of the upper portion 50u of the reinforcing surface material 50 and the outdoor side surface 50dsx of the lower portion 50d are respectively of the upper receiving material 30. The bottom surface 30hb of the dent portion 30h and the bottom surface 40hb of the dent portion 40h of the lower receiving material 40 are in contact with each other, and the upper surface 50usu of the upper portion 50u and the lower surface 50dsd of the lower portion 50d are each provided with the dent portion 30h of the upper receiving material 30. It is in contact with the downward facing surface 30hsd (hereinafter, also referred to as the lower surface 30hsd) and the upward facing surface 40hsu (hereinafter, also referred to as the upper surface 40hsu) provided by the recessed portion 40h of the lower receiving member 40. Then, such contact also effectively contributes to countering the above-mentioned rotational moment M.

Here, from the viewpoint of more reliably exerting the counteraction to the rotational moment M, it is desirable that the surface 50si on the indoor side (corresponding to one surface) of the reinforcing surface material 50, as shown in FIG. 3B. ) Is located on the indoor side surface 30si of the upper receiving material 30 at the boundary position Pb30 with the upper portion 30siu, or is located on the indoor side of the upper portion 30siu, or is located at the same position in the prospective direction. Similarly, similarly, the indoor surface 50si of the reinforcing surface material 50 is closer to the indoor side than the lower portion 40side at the boundary position Pb40 with the lower portion 40sid on the indoor surface 40si of the lower receiving material 40. It is preferable that they are located or are located at the same position in the prospective direction.

If this is the case, the above-mentioned restrictions, that is, the upper receiving material 30 and the lower receiving material 40 as seen from the indoor side as shown in FIG. 3A, are intended to be made to look like a biwa plate 9. Even if there is a restriction that the upper receiving material 30 and the lower receiving material 40 are retracted to the outdoor side from the elbow tree 8 and the head piercing 4, as shown in FIG. 3B, the lower surface 30hsd and the lower side of the upper receiving material 30 are provided. The upper surface 40hsu of the receiving material 40 can be brought into contact with the upper surface 50usu of the upper portion 50u and the lower surface 50dsd of the lower portion 50d of the reinforcing surface material 50 in the largest possible area, respectively. Therefore, it is possible to more reliably counter the above-mentioned rotational moment M.

The reinforcing structure 20 is installed in the wooden structure 1 as follows, for example.

First, the upper receiving material fixing step is performed. That is, as shown in FIG. 3B, the upper receiving member 30 is fixed to the passing elbow tree 8 with the first wood screw 71 while the upper surface 30su of the upper receiving member 30 is in contact with the lower surface 8sd of the passing elbow tree 8 from the indoor side in the prospective direction. .. However, at this time, the upper receiving member 30 is not fixed to the two braids 10 and 10. Therefore, it is possible to prevent the upper receiving member 30 from restricting the movement of the braid 10.

Further, at this time, it is conceivable that the lower surface 8sd of the through elbow tree 8 is curved and deformed due to aged deterioration or the like, but in that case, the curved shape corresponding to the lower surface 8sd of the through elbow tree 8 is formed. The upper surface 30su of the upper receiving material 30 may be processed.

Next, the undercoat material fixing step is performed. That is, the lower receiving material 40 is fixed to the head nuki 4 with the second wood screw 72 while the lower surface 40sd of the under receiving material 40 is in contact with the upper surface 4su of the head nuki 4 from the indoor side. However, at this time, the underlayer 40 is not fixed to the two braids 10, 10. Therefore, it is possible to prevent the lower receiving material 40 from restricting the movement of the braid 10.

Further, at this time, as in the case of the through elbow tree 8 described above, it is conceivable that the upper surface 4su of the head nuki 4 is curved and deformed due to aged deterioration or the like. The lower surface 40sd of the underlayer 40 may be processed into a curved shape corresponding to the upper surface 4su.

Then, finally, the reinforcing face material fixing step is performed. That is, while the upper portion 50u and the lower portion 50d of the reinforcing face material 50 are in contact with the upper receiving material 30 and the lower receiving material 40 from the indoor side in the prospective direction, the upper portion 50u of the reinforcing surface material 50 is raised by the third wood screw 73. It is fixed to the receiving material 30, and the lower portion 50d of the reinforcing face material 50 is fixed to the lower receiving material 40 with the fourth wood screw 74. However, at this time, the reinforcing face material 50 is not fixed to the two braids 10, 10. Therefore, the reinforcing face material 50 can prevent the movement of the braid 10 from being restricted. With the above, the arrangement of the reinforcing structure 20 on the wooden structure 1 is completed.

Incidentally, the upper receiving material fixing step and the lower receiving material fixing step are in no particular order, that is, the lower receiving material fixing step may be performed before the upper receiving material fixing step.

=== Other embodiments ===
Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, the present invention can be changed or improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof. For example, the following modifications are possible.

In the above-described embodiment, as shown in FIGS. 3A and 3B, wood screws are shown as an example of the first to fourth penetrating materials 71 to 74. The wood screw has a head portion 71h to 74h and a shaft portion 71a to 74a, and is provided with a spiral convex portion on the outer peripheral surface of the shaft portion 71a to 74a. Absent. For example, iron round nails or Japanese nails may be used. Further, the materials of the first to fourth penetrating materials 71 to 74 are not limited to those made of iron. For example, it may be made of other metal.

In the above-described embodiment, as shown in FIG. 2, a through elbow tree 8 is shown as an example of the upper cross member 8, and a head nuki 4 is shown as an example of the lower cross member 4, but the present invention is not limited to this. For example, the lower cross member 4 may be pressed and held.

In the above-described embodiment, as shown in FIGS. 2 and 3A, two braids 10 are shown as an example of the two vertical members 10, but the present invention is not limited to this. For example, a bunch of kento, a bunch of large bottles, a crotch, etc. may be used. Further, the two vertical members 10 may be members different from each other. For example, one of the two vertical members 10 may be a braid, and the other may be a bundle of kento. Further, in the above-described embodiment, the two braids 10 and 10 are arranged on the upper surfaces 2es and 2es of the upper end portions 2e and 2e of the pillars 2 and 2, respectively, but these braids 10 and 10 are arranged in the lateral direction. It is not limited to this as long as it is located on both sides in the horizontal direction with an interval of. For example, the braids 10 and 10 may be arranged on the upper surface 4su of the head nuki 4 as a lower cross member.

In the above-described embodiment, as shown in FIGS. 2 to 3B, the biwa plate 9 is illustrated as an example of the face material 9, but the present invention is not limited to this. That is, any member may be used as long as it is a member arranged in the space SP partitioned by the upper horizontal member 8, the lower horizontal member 4, and the two vertical members 10 and 10. For example, a face material 9 such as a column where a sculpture or the like is formed may be used.

In the above-described embodiment, as shown in FIG. 3B, one side of the prospective direction described in the claim is defined as the "indoor side" and the other side is defined as the "outdoor side". Is also good. For example, one side may be "outdoor side" and the other side may be "indoor side". Then, in this case, the reinforcing structure 20 of the present invention can be quickly arranged with respect to the wooden structure 1 in which the important cultural property exists on the indoor side.

In the above-described embodiment, as shown in FIG. 3B, the first wood screw 71 as the first penetrating material is screwed into the corner portion 30hbc of the recessed portion 30h of the upper receiving material 30, so that the first wood screw 71 is screwed. It was screwed in an oblique direction facing upward and outside the room, but it is not limited to this. For example, when screwing into the above-mentioned lower surface 30hsd located at the upper part of the dented portion 30h, the first wood screw 71 may be screwed upward. Similarly, in the example of FIG. 3B, the second wood screw 72 as the second penetrating material is screwed into the entrance corner portion 40hbc of the recessed portion 40h of the lower receiving material 40, so that the second wood screw 72 is located on the outdoor side and It was screwed in an oblique direction facing downward, but it is not limited to this. For example, when screwing into the above-mentioned upper surface 40hsu located at the lower part of the dent portion 40h, the second wood screw 72 may be screwed downward.

1 wooden structure, 2 pillars, 2e ends, 2es top surface,
4 head nuki (lower cross member), 4e end,
4si Indoor side surface (one side surface), 4su upper surface, 4suk large insert,
6 Ground cover,
8 through elbows (upper cross member), 8sd lower surface, 8sdk large insert,
8si Indoor side (one side),
9 Biwa board (face material), 9ed lower edge, 9eu upper edge,
10 braids (vertical material),
11 Daito, 12 Hijiki, 13 Dougong,
20 reinforcement structure, 20H main body,
30 Top receiving material,
30h dent, 30hb bottom, 30hbc corner,
30hsd lower surface, 30sd lower surface,
30si indoor side surface (one side surface), 30sid lower part, 30siu upper part,
30su top surface,
30sx outdoor side surface,
40 Underlay material,
40h dent, 40hb bottom, 40hbc corner,
40hsu top surface, 40su top surface,
40si indoor side surface (one side surface), 40sid lower part, 40siu upper part,
40sd bottom surface,
40sx outdoor side surface,
50 Reinforcing face material,
50c central part, 50cp protruding part,
50d lower part, 50dsd lower surface, 50dsx outdoor side surface,
50u top, 50us top, 50usx outdoor side,
50si Indoor side (one side),
71 1st wood screw (1st penetrating material), 71h head, 71a shaft,
72 2nd wood screw (2nd penetrating material), 72h head, 72a shaft,
73 3rd wood screw (3rd penetrating material), 73h head, 73a shaft,
74 4th wood screw (4th penetrating material), 74h head, 74a shaft,
Pb4 boundary position, Pb8 boundary position, Pb30 boundary position, Pb40 boundary position,
SP space, GP gap, Cm axis,

Claims (9)

The upper cross member arranged along the lateral direction intersecting the vertical direction and the lower cross member arranged along the lateral direction while being located below the upper cross member, and the lateral direction between each other. Surrounded by two vertical members arranged along the vertical direction, the upper horizontal member, the lower horizontal member, and the two vertical members, which are located on both sides of the horizontal direction at intervals of. It is a structure that reinforces a wooden structure having a face material whose normal direction is oriented in a prospective direction intersecting the vertical direction and the lateral direction while being arranged in a space.
A wooden top receiving material arranged at a position on one side of the face material in the prospective direction and fixed to the lower surface of the upper cross member with the first penetrating material.
A wooden underlaying material arranged at a position on one side of the face material and fixed to the upper surface of the lower cross member with a second penetrating material.
A wooden reinforcing surface arranged at a position on one side of the face material, with the upper part fixed to the upper receiving material by the third penetrating material and the lower part fixed to the lower receiving material by the fourth penetrating material. With wood,
A reinforcing structure of a wooden structure, wherein the upper receiving material, the lower receiving material, and the reinforcing face material are not fixed to the two vertical members. A reinforced structure of the wooden structure according to claim 1.
The upper receiving material and the lower receiving material face each other with a vertical gap between them.
The upper receiving material has a dent portion dented on the other side in the prospective direction in a lower portion on the one side surface in the prospective direction.
The lower receiving material has a dent portion dented on the other side in the prospective direction on the upper portion on the one side surface in the prospective direction.
The central portion of the reinforcing face material in the vertical direction has a portion protruding from the upper portion and the lower portion to the other side in the prospective direction.
The upper portion and the lower portion of the reinforcing face material are in contact with the bottom surface of the dent portion of the upper receiving material and the bottom surface of the dent portion of the lower receiving material, respectively.
The protruding portion of the central portion of the reinforcing surface material is inserted into the gap between the upper receiving material and the lower receiving material, and the lower surface of the upper receiving material and the upper surface of the lower receiving material are inserted. Reinforcing structure of a wooden structure characterized by being in contact with. The reinforced structure of the wooden structure according to claim 2.
The head of the first penetrating material is located at the entrance corner of the upper end edge of the bottom surface of the dented portion of the upper receiving material.
The head of the second penetrating material is located at the entrance corner of the lower end edge of the bottom surface of the dented portion of the lower receiving material.
A wooden structure characterized in that the head of the first penetrating material and the head of the second penetrating material are covered by the upper portion and the lower portion of the reinforcing face material from one side thereof, respectively. Reinforced structure of the body. A reinforcing structure of the wooden structure according to any one of claims 1 to 3.
The first penetrating material is penetrated upward or diagonally upward and facing the other side in the prospective direction.
The second penetrating material is a reinforcing structure of a wooden structure, characterized in that the second penetrating material is penetrated downward or downward and in an oblique direction facing the other side in the prospective direction. A reinforcing structure of the wooden structure according to any one of claims 1 to 4.
A plurality of the third penetrating materials penetrated in the prospective direction are arranged side by side in the lateral direction, and the positions of at least one of the third penetrating materials in the vertical direction are adjacent to each other in the lateral direction. It is deviated from the vertical position of another third penetrating material.
A plurality of the fourth penetrating materials penetrated in the prospective direction are arranged side by side in the lateral direction, and the positions of at least one of the fourth penetrating materials in the vertical direction are adjacent to each other in the lateral direction. A reinforcing structure of a wooden structure, characterized in that the position of another fourth penetrating material is deviated from the vertical position. The reinforced structure of the wooden structure according to claim 5.
A reinforcing structure of a wooden structure, wherein at least one member of the reinforcing face material, the upper receiving material, and the lower receiving material has a grain of wood along the lateral direction. A reinforcing structure of the wooden structure according to any one of claims 1 to 6.
The one-sided surface of the upper receiving member is located on the other side in the prospective direction with respect to the one- sided surface of the upper cross member at a boundary position with the one-sided surface of the upper cross member. Ori,
The one side surface of the lower cross member is located on the other side of the one side surface of the lower cross member at the boundary position with the one side surface of the lower cross member. Reinforced structure of the characteristic wooden structure. The reinforced structure of the wooden structure according to claim 7.
The upper surface of the reinforcing face material is in contact with the lower surface of the upper receiving material, and the lower surface of the reinforcing surface material is in contact with the upper surface of the lower receiving material.
Whether the one side surface of the reinforcing face material is located on the one side of the one side surface of the top receiving material at the boundary position with the one side surface of the top receiving material. Or it is located at the same position in the prospective direction.
Whether the one side surface of the reinforcing face material is located on the one side of the one side surface of the under receiving material at the boundary position with the one side surface of the under receiving material. Alternatively, a reinforcing structure of a wooden structure characterized in that it is located at the same position in the prospective direction. The upper cross member arranged along the lateral direction intersecting the vertical direction and the lower cross member arranged along the lateral direction while being located below the upper cross member, and the lateral direction between each other. It is a method of reinforcing a wooden structure having two vertical members arranged along the vertical direction while being located on both sides in the horizontal direction at intervals of.
An upper receiving material fixing step of fixing the upper surface of the wooden upper receiving material with the first penetrating material while abutting the lower surface of the upper horizontal member from one side in the vertical direction and the prospective direction intersecting the lateral direction.
A step of fixing the lower receiving material with a second penetrating material while abutting the lower surface of the wooden lower receiving material on the upper surface of the lower cross member from the one side in the prospective direction.
While the wooden reinforcing face material is brought into contact with the upper receiving material and the lower receiving material from the one side in the prospective direction, the upper portion of the reinforcing face material is fixed to the upper receiving material with the third penetrating material. It has a reinforcing face material fixing step of fixing the lower part of the reinforcing face material to the lower receiving material with the fourth penetrating material.
In the upper receiving material fixing step, the lower receiving material fixing step, and the reinforcing face material fixing step, the upper receiving material, the lower receiving material, and the reinforcing face material are not fixed to the two vertical members. A method of reinforcing a wooden structure characterized by.

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