JP4432845B2 - Axle structure of blow-off opening - Google Patents

Description

  The present invention relates to a frame structure in a case where a tall opening is provided in an outer wall facing the atrium space of a wooden building.

  In a wooden frame structure or a wooden structure based on this structure, if an atrium space is provided inside and a tall window across the upper and lower floors is provided on the outer wall facing the atrium space, the wind pressure acting on the window is increased. Resistance means are required. Conventionally, the following reinforcing structure has been adopted as such means.

  [A] As shown in FIG. 3, wind-resistant beams 92 are erected at an intermediate height of the window 91 to connect the column members 93 on both sides of the window. The wind resistant beam 92 has a vertically long rectangular cross section.

  [B] A plurality of through pillars extending up and down the floor are erected on the indoor side of the window. For these through pillars, 105mm square to 120mm square bars are used.

  [C] In the two-by-four method, three or four 204 materials (38mm x 89mm) and 206 materials (38mm x 140mm), which are used as wall frame materials, are joined together with nails, and this is used as a reinforcing column. Set up.

In addition, Patent Document 1 discloses a structure in which a large opening such as a carport is provided in a wooden shaft assembly, although it is not an opening facing the atrium space, and the cross-sectional shapes of the column members on both sides of the opening are defined as frontage. It is described that the rectangle is long in the direction.
Registered Utility Model No. 3072595

  The wind resistant beam used in the reinforcing structure [A] is constructed so that the weak axis direction (short side direction) in the rectangular cross section coincides with the direction of the wind pressure acting on the window, so that the strength against the wind pressure is satisfactory. It cannot be obtained and it is difficult to increase the opening area of the window. Further, since the window extending over the upper and lower floors is divided at the middle portion by the high wind-resistant beam, the continuity in the vertical direction is impaired, which is not preferable in design.

  The through column used in the reinforcing structure [B] has a small cross-sectional area as compared with the length, and therefore has a low strength against wind pressure and is likely to buckle. In order to ensure the predetermined strength, it is necessary to increase the cross-sectional area of the through pillars and increase the number of the through pillars.

  The reinforcing column used in the reinforcing structure [C] also has a small member cross section with respect to the wind pressure direction, so that a satisfactory strength cannot be obtained. Further, since the two-by-four material is a lumber, if the material length is long, the possibility of warping or twisting is high. Furthermore, even if a member is desired to be used as a finish, the material itself is inferior in texture and design, and it is difficult to produce a high-class feeling.

  The structure described in Patent Document 1 is effective for a vertical load or a horizontal load in the frontage direction, but cannot be expected to have an effective resistance against wind pressure acting in a direction perpendicular to the opening surface.

  The present invention has been made in view of the above problems, and when providing an opening such as a tall window facing the blow-off space, it has a high resistance to a large wind pressure acting on the opening. The present invention provides a shaft assembly structure that exhibits and is excellent in opening feeling and design.

To achieve the above object, framing structure of blow openings of the present invention, provided the atrium over a two-story building with a skeleton framing wooden, 2 or more levels to the outer wall facing the atrium of a framing structure when the height providing openings over the cross-section or a large cross-sectional structural laminated wood or Ranaru wind pillar in major dimension of the cross section is at least twice the minor axis dimensions, A plurality of wind-resistant columns are installed in the opening plane including both sides of the opening so that the upper and lower floors are continuous without interruption and the major axis direction of the cross section is orthogonal to the opening. The legs are fixed directly to the reinforced concrete foundation via appropriate column base hardware, while the heads of these wind-resistant columns are attached to the top of the eaves girder or the equivalent frame frame via appropriate column beam hardware. Fix it directly to the beam so that it will win the pillar. Appropriate intermediate position in the height direction of the wind pillars, characterized in that the resistance to wind pressure is connected to a horizontal direction by the pillar tether consisting of small glulam of cross section than耐風Bashira, acting on the opening surface by their wind Column And

  The wind-resistant column in the present invention is a through column continuous over two or more levels, and is erected so that the major axis direction in the rectangular cross section is perpendicular to the opening surface, that is, the direction of the wind pressure. Therefore, the wind-resistant column is used as a strong shaft against the wind pressure, and high strength is obtained. Thereby, it is possible to provide a large and open opening.

  Furthermore, since this wind-resistant column is formed by processing a laminated material, the strength is uniform as compared with conventional general lumber, and warpage and twisting are less likely to occur. In addition, even when the wind resistant beam is directed toward the indoor side or the outdoor side and finished, a beautiful and good texture can be obtained. Glued wood whose major axis direction is more than twice the minor axis direction is a material mainly used as a beam material in the so-called glulam construction method, so the factory machining also uses the conventional machining line It can be done efficiently and economically.

  The laminated material includes a structural laminated material and a building action laminated material, but the structural laminated material is used in the frame structure of the present invention. The standard for structural laminated lumber has been established as "JAS of structural laminated lumber" in 1996 Ministry of Agriculture, Forestry and Fisheries Notification No. 111. In this standard, a section having a short side of 15 cm or more and a cross-sectional area of 300 square cm or more is a “large cross-section laminated material”, a short side of the cross section is 7.5 cm or more, and a long side is 15 cm or more. Those other than cross-section laminated wood are defined as “medium cross-section laminated wood”, and those whose short side is less than 7.5 cm or whose long side is less than 15 cm are designated as “small cross-section laminated material”. A structural laminated material having a medium cross section or more can be suitably used as a pillar.

  A plurality of wind-resistant columns are erected on the opening surface including both sides of the opening according to the size of the opening. When the number of wind-resistant columns is large, these wind-resistant columns may be connected by a horizontal column connecting material at an appropriate intermediate position in the height direction. The column connecting material is preferably installed with a rectangular cross section being vertically long, but its cross-sectional dimension is much smaller than that of the wind-resistant column. The position of the column connecting member is not affected by the position of other beam members and the like, and can be set independently, so that the degree of freedom in the design of the opening is not easily limited.

  The column base of the wind-resistant column is directly fixed to the foundation via an appropriate column base hardware, and the column head of the wind resistant column is an eaves girder or an equivalent frame structure equivalent to this via the appropriate column beam hardware. It is preferably fixed directly to the top beam. Thereby, since the horizontal load by a wind pressure can be directly transmitted to a foundation and a housing uppermost part, it becomes a stable housing structure.

  According to the frame structure of the blow-off opening portion of the present invention configured as described above, the wind-resistant column that continues over two or more levels stands upright with the strong axis direction in the rectangular cross section directed to the direction of wind pressure action. As a result, a higher resistance to wind pressure can be obtained as compared with conventional shaft structures and two-bar for structures. As a result, the height and width of the opening can be increased, and the atrium space and window surface that are dynamic and full of release can be designed.

  In addition, since a wind-resistant column made of laminated material is used, it is superior in strength and dimensional stability compared to lumber, and even when the wind-resistant column is represented and finished, a beautiful and good texture can be obtained.

  Further, by utilizing the fact that the depth (probable dimension) of the wind-resistant column is larger than that of the other shaft assembly parts, it becomes possible to accommodate window-related equipment such as blinds and panel radiators within this depth dimension.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic external elevation view of a wooden building according to an embodiment of the present invention, and FIG. 2 is a partially exploded perspective view of a frame structure of a vent opening of the building as viewed from the indoor side.

  This building 1 is a two-story building, and a two-story atrium space is provided indoors, and a vertically long opening 2 is provided on the outer wall facing this atrium space. In FIG. 2, reference numeral 3 is a wind-resistant column constituting the main part of the present invention, reference numeral 4 is a foundation made of reinforced concrete, reference numeral 5 is an eaves girder arranged at the uppermost part of the frame shaft, and reference numeral 6 is an outer wall shaft. It is a torso difference to constitute.

  A total of four wind-resistant columns 3 are arranged at both sides of the opening 2 and in this example, at an intermediate position that divides the opening 2 into approximately three equal parts in the width direction. The wind-resistant column 3 is made of a laminated material having a rectangular cross section of, for example, a major axis of 360 mm and a minor axis of 120 mm, and is erected with the major axis direction of the cross section orthogonal to the opening surface. Although the cross-sectional dimension of the wind-resistant column 3 is not limited to the example, it is preferable in terms of strength that the major axis dimension is approximately twice or more, preferably 2.5 to 3.5 times the minor axis dimension.

  The wind-resistant pillar 3 is continuous with one material over two layers. The column base of the wind-resistant column 3 is fixed to the reinforced concrete foundation 4 via an appropriate column base metal 7, and the head of the column is won against the eaves girder 5 in this example via an appropriate column beam hardware 8. It is joined to become.

  Reference numeral 9 denotes a column connecting material that connects the wind-resistant columns 3 to each other in the horizontal direction. The column connecting material 9 is a member having a smaller cross-sectional dimension than the wind-resistant column 3, and in this example, a laminated material having the same section as the trunk difference 6 or a smaller section than the trunk difference 6 is used. The column connecting material 9 is joined to the side surface of the wind-resistant column 3 through an appropriate column beam hardware 10. The mounting height of the column connecting material 9 is not affected by the height of the floor set or the like provided between the upper and lower floors, and an appropriate intermediate position in the height direction of the wind-resistant column 3 can be set.

  The opening 2 configured in this way exhibits a high resistance to wind pressure acting on the opening surface because the strong axis direction of the wind-resistant column 3 is orthogonal to the opening surface. Thereby, the opening part 2 which is large and is rich in a release feeling can be designed. If the cross-sectional dimensions and arrangement intervals of the wind-resistant columns 3 are appropriately set, the height of the opening 2 can be three or more levels.

  Note that the window sash attached to the opening 2 is not shown, but can be installed on the outdoor side, the indoor side, and the depth dimension of the wind-resistant column 3. Since the wind-resistant column 3 made of laminated wood can be used for both interior and exterior, this point is also advantageous, but the surface of the wind-resistant column 3 exposed to the indoor side or the outdoor side may be covered with an appropriate finishing material. Of course it is possible.

1 is a schematic external elevation view of a wooden building according to an embodiment of the present invention. It is the partial exploded perspective view which looked at the frame structure of the atrium opening of the building from the indoor side. It is the external appearance elevation schematic of the wooden building which shows an example of the reinforcement structure of the conventional opening part.

Explanation of symbols

2 Opening 3 Wind-resistant pillar 4 Foundation 5 Eaves girder 7 Column base 8 Column beam hardware 9 Column connecting material

Claims (2)

Provided atrium into two or more stories of a building with a skeleton framing wooden, a framing structure of a case of providing the opening over the height of more than two layers to the outer wall facing the atrium,
The cross-section or larger cross-sectional structural laminated wood or Ranaru wind pillar in major dimension of the cross section is at least twice the minor axis dimension, so as to be continuous uninterrupted over the upper and lower floors, and the long axis direction of the cross section Are installed vertically in the opening surface including both sides of the opening, and the column bases of these wind-resistant columns are attached to the foundation made of reinforced concrete via appropriate column base hardware. While fixed directly, the heads of these wind-resistant columns are fixed directly to the top beam of the eaves girder or similar frame frame via appropriate column beam hardware so that the column wins, and further the wind-resistant columns The appropriate intermediate position in the height direction is connected in the horizontal direction by a column connecting material made of laminated material having a smaller cross section than the wind-resistant column,
A shaft structure of a blow-off opening portion that resists wind pressure acting on the opening surface by the wind-resistant columns. The frame structure of the blow-off opening portion according to claim 1, wherein the surface of the wind-resistant column is finished on the indoor side .

Images