JP2019105049A - Earthquake-resistant structure of wooden house - Google Patents

Abstract

To provide an existing wooden house capable of imparting excellent earthquake resistance without requiring excessive labor and cost.SOLUTION: In an earthquake-resistant reinforcing structure in which an inner wall material of an existing wooden house is replaced with a reinforcing plate 7a from the indoor side, a part where a space between adjacent columns among a plurality of existing columns 3a, 3b, 4a is 800 mm or more is added with reinforcing studs at the prescribed position, and a space between adjacent columns is made less than 500 mm; studs 10a, 10a receiving side ends of the right and left reinforcing plates 7a, 7a are added to a part where an existing column does not exist at a connecting part continuous in the width direction of the reinforcing plate 7a; and the reinforcing plate 7a is fixed at both right and left ends thereof to one of the columns or a receiving material attached thereto, and both upper and lower ends thereof are fixed to a beam 1 and a base 2; a wall panel structure is formed in which the reinforcing plate 7a is fixed to the inner side surface of a rectangular frame.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an aseismatic reinforcing structure of a wooden house, and more particularly to an aseismic reinforcing structure in which a wall of an existing wooden house is panelized from the inside to enhance aseismic performance.

  About wooden houses by conventional construction method, what passed 25 years or more of age is said that there are many cases that earthquake resistance is insufficient when it sees from the present earthquake proofing standard. However, in order to rebuild such an old wooden house to a house with sufficient earthquake resistance, in addition to the fact that dismantling and new construction require a great deal of effort and cost, a large amount of industrial waste is generated. Become.

  On the other hand, there is also known a method of improving the earthquake resistance by remodeling the structure such as a wall to a high strength one without rebuilding the entire house, but also in such a case, almost replace the structural member of the wall supporting the load. As a result, relatively large costs and a large amount of industrial waste will be emitted. Therefore, as can be seen, for example, in Japanese Patent Application Laid-Open No. 2005-226450, at the time of renovation of a house, a plurality of cross bars are passed and fixed between a pair of pillars extending from the floor under the floor to the beams on the ceiling side, By attaching a reinforcing plate to the opening formed by the columns, there has been proposed a technique for improving the earthquake resistance with a minimum of repair work.

  Moreover, as a technology applied to the existing wooden house, Japanese Patent No. 4098334 comprises a base, a beam installed above the base, and a seismic panel (reinforcement board) installed between the beam and the base. The seismic reinforcement structure of the building where the upper end of the aseismic panel is fixed to the beam and the lower end is placed on the base with the edge cut off is proposed, with a relatively simple procedure It is easy to complete seismic reinforcement work.

  However, these techniques are methods that improve seismic resistance by fixing reinforcing plates so as to pass between two exposed pillars while removing old wall materials from the inside in existing houses. Because, in old houses, there are many cases where the distance between pillars is various sizes without complying with the prescribed standards, when using standard reinforcing plates whose vertical and horizontal sizes are determined in advance As well as taking time and effort to cut the width to fit most of them, the cut off was easy to be wasted.

  In addition, in addition to the fact that the strength of the wall is difficult to sufficiently increase, in the case of the seismic reinforcement method in which only the inner wall material of the old house is replaced with the reinforcing plate and the other structural parts such as the floor are not reinforced It is difficult to provide high earthquake resistance. Therefore, in order to realize a sufficient earthquake resistance structure, it is necessary to use an expensive reinforcing plate excellent in strength performance or an excessively thick reinforcing plate or to add a large number of reinforcing brackets, which results in labor and cost of reinforcing work. There is also a problem that

JP 2005-226450 A Patent No. 4098334

  The present invention is intended to solve the above-mentioned problems, and it is an object of the present invention to be able to impart excellent earthquake resistance to an existing wooden house without requiring excessive labor and cost.

  Therefore, in the aseismatic reinforcing structure in which the inner wall material of an existing wooden house is replaced with a predetermined reinforcing plate from the indoor side, the present invention provides an adjacent pillar among a plurality of existing pillars exposed by removing the inner wall material. Where there is an interval of 800 mm or more, reinforcement studs are added at the predetermined positions so that the distance between adjacent columns is less than 500 mm, and existing columns exist at the connection portion where the reinforcing plate is continuous in the width direction The pillars that receive the side end sides of the left and right reinforcing plates are added to the non-places, and the reinforcing plates are fixed to either the pillars or the supporting members attached thereto at the left and right end sides thereof The upper and lower end sides are fixed to a predetermined cross member, and a wall panel structure in which a reinforcing plate is fixed to the edge side is formed on an inner side surface of a frame assembled in a square. .

  As described above, by adopting a wall panel structure in which the pillars and the cross members are fixed in a frame shape on the edge side of all of the rectangular reinforcing plates in the longitudinal and lateral directions, high strength can be exhibited even with a simple configuration. Because the panel strength is greatly increased by the studs arranged at narrow intervals, excellent seismic reinforcement can be realized with less labor and cost without using expensive reinforcing plates and many reinforcing brackets, And, by adopting a method of providing a stud for receiving the connection portion of the continuous reinforcing plate, the size adjustment of the width of the reinforcing plate to be used can be minimized.

  In addition, in this aseismatic reinforcing structure, among the existing studs, those having a lateral width of less than 30 mm in a front view are provided with reinforcing columns attached to the side surfaces thereof to have a total width of 60 mm or more. In the case of constituting the existing studs in which the reinforcing plate is located at the continuous connection portion in the width direction, reinforcing pillars are attached to both the left and right sides thereof, and the total width is 90 mm or more. In this way, excellent earthquake resistance can be realized with certainty.

  Furthermore, in the above-described aseismatic reinforcing structure, a brace is disposed between the existing adjacent pillars, and a portion of the reinforcement stud that intersects with the brace is cut out and engaged with the brace. If it is characterized in that it is arranged in the above, the composite structure of braces and additional studs will be able to exhibit better seismic strength.

  Furthermore, the above-described aseismatic reinforcing structure is characterized in that the floor has an aseismic reinforcing structure formed by replacing an existing floor material with a predetermined reinforcing plate before the aseismatic reinforcing of the wall is performed. If it does, it will be easy to ensure the outstanding earthquake resistance about the whole house as a structure.

  In addition, in the above-described aseismatic reinforcing structure, the reinforcing plate is a fiber-reinforced load-bearing face material, which has been recognized as a non-combustible material or a quasi-non-combustible material. While exhibiting high earthquake resistance without requiring thickness, it is also excellent in fire protection performance.

  In this case, if the fiber reinforced load bearing surface material is characterized by being a fiber mixed slag gypsum board coated with an acrylic resin on the surface, it is further excellent in fire resistance while exhibiting excellent earthquake resistance even though it is thin. It becomes a thing.

  Alternatively, the fiber reinforced load-bearing face material is obtained by applying a fiber reinforced coating material to the surface of a predetermined plywood or / and both front and back sides, and it is relatively inexpensive. A reinforcement plate excellent in seismic performance can be provided.

  In this case, the plywood is a wood-based plywood, and the fiber reinforced coating material is a short fiber reinforced mortar paint formed by mixing incombustible short fibers. At the same time, it can provide fire resistance as well as increase the rigidity of wood based plywood.

  According to the present invention, which has a wall panel structure in which a column and a cross member are fixed to the entire edge side of the reinforcing plate in the vertical and horizontal directions, additional studs are added to the wide part of the column space. It has become possible to provide excellent shock resistance.

It is a front view showing the composition of the aseismatic reinforcing structure which is an embodiment in the present invention. It is a fragmentary perspective view which shows the detailed structure by the side of the lower end of the earthquake-resistant reinforcement structure of FIG. It is a fragmentary perspective view which shows the modification of the aseismatic reinforcing structure of FIG. It is a front view which shows the application example of the aseismatic reinforcing structure of FIG. It is a front view which shows the modification of the aseismatic reinforcing structure of FIG. It is a front view which shows the application example of the aseismatic reinforcing structure of FIG. It is a front view which shows the modification of the earthquake-resistant reinforcement structure of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present invention, the space between the pillars is not a distance based on the central position (center line) of the pillars, but refers to a portion formed between the pillars and the adjacent side faces of the pillars. Do.

  FIG. 1 is a front view showing a seismic reinforcement structure of a wooden house according to an embodiment of the present invention, and FIG. 2 is a perspective view partially showing the lower end side of the seismic reinforcement structure while enlarging it. It is. In the present embodiment, for example, in an existing wooden house requiring aseismic reinforcing work after the age of 25 years or more, when replacing an old inner wall material with a predetermined reinforcing plate from the indoor side, the reinforcing plate The wall panel structure is formed as a whole by fixing the left and right end sides thereof to any one of the columns or the support members attached thereto and fixing the upper and lower end sides to a predetermined cross member It is characterized by points.

  That is, the seismic strengthening structure of the present embodiment includes the existing foundation 1, the existing beam 2 disposed above the foundation 1, the existing columns 3a, 3b,... The old inner wall material covering the inner side surface of the outer wall consisting of the existing stud 4a, ··· and the existing outer wall material 14 (see Fig. 2) covering the outer side surface is the reinforcing plate 7a, 7a,・ It has been replaced and disposed.

  Further, the aseismatic reinforcing structure of the present invention is characterized in that there is no portion where there is a gap of 800 mm or more between pillars, and existing pillars do not exist in the connecting portion where the reinforcing plate 7a is continuous in the width direction. At the locations, pillars 10a, 10a,... Of predetermined widths for receiving the side end portions of the left and right reinforcing plates 7a, 7a are added, and the reinforcing plates 7a, 7a are respectively fixed thereto. Also, on the floor side below the wall, receiving members 12a, 12a, ... are provided on the upper surfaces of the reinforcing plates 5a, 5b, 5c formed by replacing the existing old floor plates, and each reinforcing plate The lower end side of 7a is fixed. Furthermore, the upper end side of each reinforcing plate 7 a is fixed to the beam 2.

  In this way, each reinforcing plate 7a disposed by removing the old inner wall material is fixed to a square frame composed of the left and right columns and the upper and lower cross members in all the upper, lower, left, and right edges thereof. The wall panel structure is formed by Therefore, even with such a simple configuration, it is possible to exhibit high earthquake resistance, with a resistance equal to or greater than that of the shaft set having a wall ratio of 4.0.

  In addition, as shown in FIG. 2, a reinforcing pillar 11a is attached to the side face of the existing narrow pillar 4a having a width smaller than 30 mm in a front view disposed between the pillars 3a and 3b, and the total In the present embodiment in which the outer wall supporting most of the weight of the house is reinforced, a more excellent earthquake resistance is exhibited.

  Furthermore, as the reinforcing plate 7a of the present embodiment, it is preferable to use a fiber reinforced load-bearing face material that has been certified as non-combustible material or semi-non-combustible material, and by using it, as a structure The wall is easy to exhibit excellent fire resistance in addition to excellent earthquake resistance. As the fiber reinforced bearing surface material, a fiber mixed slag gypsum board surface-coated with an acrylic resin is preferable in that it is excellent in fire resistance as well as in excellent strength. Alternatively, relatively low-cost wood-based plywood coated with a fiber-reinforced coating material excellent in flame resistance and strength with a short fiber-reinforced mortar paint or the like on the surface and / or both front and back sides of the relatively inexpensive wood-based plywood It is possible to secure earthquake resistance of a predetermined level or more at a cost.

  In addition, in this embodiment, while replacing the old floor material with the square reinforcing plates 5a, 5b and 5c in advance before the aseismic reinforcing work of the wall, a cross member serving as a receiving material on the back side of the edge of the four sides It is preferable to provide an anti-seismic reinforcing structure of the floor which is disposed and forms the same floor panel structure as described above, and by combining with the anti-seismic reinforcing structure of the wall described above, the whole house as a structure is It is possible to realize even better earthquake resistance.

  FIG. 3 is a modification of the aseismatic reinforcing structure of FIG. 2 and shows a case where the surface of the reinforcing plates 7a, 7a,... Is arranged and fixed at the same position as the surfaces of the columns 3a, 3b,. ing. In this example, in addition to the horizontally oriented receiving members 12b disposed on the lower end side of the reinforcing plate 7a, vertically oriented receiving members 13a and 13a are attached to the left and right sides of the columns 3a, 3b,. It is characterized in that the left and right ends of the reinforcing plate 7a are all fixed. Also in this case, high earthquake resistance can be exhibited while forming a wall panel structure as described above.

  FIG. 4 shows an application example of the aseismatic reinforcing structure of FIG. In this example, the pillar 3c or the pillar 3d is located on one of the left and right sides of the reinforcing plate 7a which is a standard product of 3 × 8, and the existing stud 4c is located on the other end. It is located, but because the wall to be reinforced constitutes the outer wall of the house, the intermediate column 4c, which is the connecting position of the reinforcing plates 7a and 7a in the width direction, is reinforced It is characterized in that the columns 11a and 11a are attached in a sandwich shape, and the total width thereof is 90 mm or more. Therefore, in order to exhibit the intensity | strength comparable to pillar 3a, 3b by the structure of this joining pillar, the further outstanding earthquake resistance is implement | achieved.

  Further, in the present embodiment, since there is a gap of 800 mm or more between the existing pillars 3c and 3d and the stud 4c, the pillars 10c and 10c having a width of 30 mm or more are disposed at an intermediate position thereof. The wall panel structure is further strengthened by being less than 500 mm each. In addition, in the wall body provided with the aseismatic reinforcing structure of the embodiment described above, it is assumed to achieve 4.0 or more as the wall magnification, but it is 5.0 times according to the strength of the reinforcing plate to be used The above is also feasible.

  FIG. 5 shows a modification of the aseismatic reinforcing structure of FIG. Also in this example, the reinforcing pillars 11c and 11d are attached to the left and right sides of the existing stud 4d, but since the height of the beam 2 is higher than that described above, in the reinforcing plate 7a of 3 × 8. Since the height is not sufficient, it is characterized in that a 3 × 6 reinforcement plate 7 b and a 3 × 3 reinforcement plate 7 d are used in combination in the height direction.

  Therefore, trunk joints 13 and 13, which are cross members for connection, are also provided at the connection between the reinforcing plate 7b and the reinforcing plate 7d in the longitudinal direction, and between the beam 2 which is the upper portion thereof. The studs 10h and 10h are provided. Thereby, the edge side of the longitudinal connection portion of the reinforcing plate 7b and the reinforcing plate 7d is fixed to the trunk joint 13 to form a wall panel structure by each, and the excellent strength of the entire wall is secured. ing.

  FIG. 6 shows an application example of the aseismatic reinforcing structure shown in FIG. 4 in which bracing 8 is disposed between the existing column 3c and the column 4c and between the existing column 3d and the column 4c. That is, even in the situation where the brace 8 is disposed between the existing adjacent pillars, reinforcement studs 10i and 10j are added, while the pillars 10i and 10j are braces 8 and 8 and It is characterized in that the overlapping and overlapping portions are cut out and disposed in mesh with these.

  Therefore, by the composite structure of the braces 8 and 8 and the additional studs 10i and 10j, it is possible to exhibit further superior seismic resistance. Further, in this case, it is preferable to attach a bracing joint 80 formed by bending a steel plate in an L-shape in plan view at a portion where the bracing 8 and the existing pillar are joined to reinforce the joint with the pillar, This can greatly increase the overall strength of the wall panel structure.

  FIG. 7: is a modification of the aseismatic reinforcing structure of FIG. 6, Comprising: It is a case where the brace 8 is crossed and arrange | positioned in X shape. Also in this example, reinforcement columns 10k and 10l are disposed in a state in which portions overlapping with braces 8 and 8 are cut out and engaged with these, and the large earthquake resistance is increased as described above. It has become. Furthermore, even when there is no existing bracing, it goes without saying that the reinforcement columns may be engaged and arranged while adding a new bracing during the aseismatic reinforcing work. Furthermore, as illustrated in FIG. 6 and FIG. 7, in the portion where the brace 8 is joined to the stud 4 c, the reinforcing pillar 11 c also functions as a splint of the brace 8 to further enhance the strength of the joint .

  In the above description, although the case where the wall to be reinforced is the outer wall constituting the outer peripheral part of the house has been described, it goes without saying that the present invention can be used also for the inner wall of a house interior. Also, although the case of using the screw 9 as the one for fixing each reinforcing plate has been described, a nail may be used instead of the screw 9 according to the material of the reinforcing plate to be used.

  As described above, the present invention makes it possible to impart excellent earthquake resistance to an existing wooden house without requiring excessive labor and cost.

  DESCRIPTION OF SYMBOLS 1 foundation, 2 beams, 3a, 3b, 3c, 3e, 3f pillar, 4a, 4b 4c, 4d, 10a, 10f, 10h, 10i, 10j, 10k, 10l Interposition, 8 braces, 11a, 11b, 11c, 11d Reinforcement column, 12a, 12b Support material, 5a, 5b, 5c, 7a, 7b, 7d Reinforcement plate, 8 braces, 9 screws, 13 trunk connection, 14 outer wall material, 80 brace connection fitting

Claims (8)

  In the aseismatic reinforcing structure in which the inner wall material of an existing wooden house is replaced with a predetermined reinforcing plate from the indoor side, the distance between adjacent columns among a plurality of existing pillars exposed by removing the inner wall material is 800 mm or more A vacant portion is added with a reinforcement stud at its predetermined position to make less than 500 mm between adjacent pillars, and the reinforcing plate is a connecting portion which is continuous in the width direction and is a place where there is no existing pillar. A pillar is received to receive the side ends of the left and right reinforcing plates, and the left and right ends of the reinforcing plate are fixed to any one of the pillars or a receiving material attached thereto, and the upper and lower ends are fixed. It was fixed to a predetermined cross member, and it was characterized in that a wall panel structure in which the reinforcing plate is fixed to the edge side is formed on the inner side surface of the frame assembled in a square.   Among the existing studs, those having a lateral width of less than 30 mm in a front view are provided with reinforcing columns on the side surfaces thereof to make the total width 60 mm or more, and the reinforcing wall constitutes the outer wall of a house. The existing studs in which the reinforcing plate is located at the continuous connection portion in the width direction are provided with reinforcing pillars on both left and right sides thereof, and the total width is 90 mm or more. Earthquake-proof reinforcement structure.   A brace is disposed between the existing adjacent pillars, and the reinforcement stud is disposed in a state where a portion overlapping with the brace is cut out and engaged with the brace. The seismic strengthening structure according to claim 1 or 2 characterized by things.   The seismic reinforcement according to any one of claims 1, 2 or 3, characterized in that it comprises a seismic reinforcement structure of a floor formed by replacing an existing floor material with a predetermined reinforcement plate at a stage prior to the seismic reinforcement of a wall. Construction. The said reinforcement board is a fiber reinforced load-bearing surface material, and has received recognition of non-combustible material or semi-non-combustible material, The earthquake-resistant reinforcement structure described in Claim 1, 2, 3 or 4 characterized by the above-mentioned.   The said fiber reinforced load-bearing surface material is the fiber mixing slag gypsum board surface-coated with acrylic resin, The earthquake-resistant reinforcement structure described in Claim 5 characterized by the above-mentioned.   The said fiber reinforced bearing surface material is what apply | coats a fiber reinforced coating material to the surface and / or front and back both surfaces of predetermined | prescribed plywood, The earthquake-resistant reinforcement structure described in Claim 5 characterized by the above-mentioned.   The anti-seismic reinforced structure according to claim 7, wherein the plywood is a wood-based plywood, and the fiber reinforced coating material is a short fiber reinforced mortar paint formed by mixing non-combustible short fibers.

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