JP3219953U - Building reinforcement structure - Google Patents

Abstract

The present invention provides a building reinforcement structure capable of maintaining strength over a long period of time with less construction effort and construction time. A metal column structure 10 including a plurality of vertical chord members 11 extending in a vertical direction and a plurality of diagonal members 12 spanned between the vertical chord members is provided in a wall of a wooden building. A building reinforcement structure 1 installed and used as a pillar, wherein the pillar structure 10 and the beam member 3 positioned above the pillar structure 10 are perpendicular to the top horizontal plate 19 provided at the upper end of the vertical chord member and It is connected via a connection plate 30 that abuts on the side surface. The connection plates are provided on both the outer side and the inner side of the beam member, and the beam member is clamped by inserting the long bolt 22 into the two connection plates and the beam member and tightening them with a nut. [Selection] Figure 2

Description

  The present invention relates to a building reinforcement structure.

  Conventionally, as a wall reinforcing structure in a wooden building, a structure in which a structural plywood is fixed to a column or a beam (for example, see Patent Document 1), or a structure in which a steel bracing frame is fixed to the outside of a column or a beam (for example, Patent Document 2). As another reinforcing structure, there was a structure in which a truss-like pillar structure was installed in a wall of a wooden building and used as a pillar (see, for example, Patent Document 3). The column structure was devised by the present inventor, and is made of a metal including a plurality of vertical chord members extending in the vertical direction and a plurality of diagonal members spanned between the vertical chord members. It is a structure.

JP 2011-226166 A Japanese Patent No. 3343647 Japanese Patent Laying-Open No. 2015-45190

  In the reinforcing structures such as Patent Documents 1 and 2, reinforcing members such as a structural plywood and a steel bracing frame are fixed to the surface of a wooden column or beam, and thus are easily detached from the column or beam. In addition, the reinforcement member is fixed to the surface of the wooden pillar or beam by a fixing jig such as a nail or lag screw. The frictional force with the jig may be extremely reduced. When a large earthquake occurs in such a state, there is a problem that the fixing member is easily detached from the timber and the strength as the bearing wall may be lost.

  In the reinforcing structure of Patent Document 3, the connection between the upper portion of the column structure and the beam has the following configuration. A wooden beam is cut to form a gap between the wooden beams, and a metal connecting beam provided at the upper end of the column structure is inserted into the gap, and the connecting beam and the wooden beam are connected with a long bolt and nut. Was. In this way, the wooden beam is cut to fix the column structure, so that there is a problem that requires a lot of labor and time for construction.

  Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to provide a building reinforcing structure capable of maintaining strength over a long period of time with less construction effort and construction time.

  The present invention for solving the above problems is a metal column structure comprising a plurality of vertical chord members extending in the vertical direction and a plurality of diagonal members spanned between the vertical chord members. It is a building reinforcement structure used as a pillar installed in the wall of a wooden building. The column structure and the beam member located above the column structure are connected via a connection plate that is perpendicular to a top horizontal plate provided at an upper end of the string member and abuts against a side surface of the beam member. Features.

  According to such a configuration, the column structure is fixed to the building structure via the connection plate that abuts the side surface of the beam member without cutting the beam member. Can be achieved. By fixing the connection plate to the beam member with bolts and nuts, the strength can be maintained for a long time.

  In the building reinforcement structure of the present invention, the connection plate is provided on both the outer side and the inner side of the beam member, and a long bolt is inserted through the two connection plates and the beam member to form a nut. It is preferable that the beam member is sandwiched between the connection plates by tightening. According to such a configuration, the fixing strength between the column structure and the beam member can be increased.

  In the building reinforcement structure of the present invention, the pillar structure is provided on a plurality of floors, and the connection plates are provided on both the outside and the inside of the beam member. The beam member is composed of the top horizontal plate provided at the upper end of the column structure on the lower floor, the bottom horizontal plate provided at the lower end of the column structure on the upper floor, and the two connection plates. What surrounds is preferable. According to such a configuration, the pillar structure on the upper floor and the pillar structure on the lower floor can be connected and the beam member can be fixed, so that the reinforcing strength of the building can be increased.

  According to the building reinforcement structure according to the present invention, the strength of the building can be maintained over a long period of time, and the labor and time required for construction can be reduced.

It is the perspective view which showed the building reinforcement structure which concerns on 1st embodiment of this invention. It is the side view which showed the building reinforcement structure which concerns on 1st embodiment of this invention. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is the side view which showed the connection with a vertical chord material and a diagonal material. It is the side view which showed engagement with the lower end part of a vertical chord material, and a diagonal material. FIG. It is CC sectional view taken on the line of FIG. It is sectional drawing which showed the building reinforcement structure which concerns on 2nd embodiment of this invention.

  A first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, a building reinforcement structure 1 according to the present embodiment is a structure that reinforces a wall portion of a wooden building, and is provided with a metal column structure 10 in a wall 2. The column structure 10 includes a pair of vertical chord members 11 extending in the vertical direction, a plurality of diagonal members 12 and a horizontal member 13 spanned between the vertical chord members, and serves as a pillar in the wall 2. It is used. The upper end of the column structure 10 is connected to the beam member 3, and the lower end of the column structure 10 is connected to the foundation 4. In the present embodiment, the column structures 10 are arranged in the wall 2 with a predetermined interval (for example, a pitch of approximately 3600 mm at the core of the column structures 10). In addition, the arrangement | positioning space | interval of the column structure 10 is an example, Comprising: It sets suitably according to a building.

  As shown in FIGS. 2 to 4, the string member 11 is made of H-section steel. The configuration of the vertical chord material is not limited to the H-shaped steel. For example, the back surfaces of a pair of lip groove steels may be joined to form a H-shaped section, or may be configured by a steel pipe or the like. It may be circular. The vertical chord material 11 is arranged vertically, and the pair of vertical chord materials 11, 11 are arranged in parallel to each other (see FIG. 2). The vertical chord material 11 is arranged so that the web 11a of H-shaped steel is along the longitudinal direction of the wall 2, and one flange 11b is arranged so as to face the adjacent vertical chord material 11 (FIG. 3). And FIG. 4). A base plate-like bottom horizontal plate 18 connected to the foundation 4 is welded to the lower end of the vertical chord member 11. The connection structure between the foundation 4 and the string material 11 will be described later. A top horizontal plate 19 for connecting to the beam member 3 is welded to the upper end of the vertical chord member 11. The connection structure between the beam member 3 and the string member 11 will be described later.

  As shown in FIG. 2, the diagonal member 12 and the horizontal member 13 are connecting members that connect the vertical chord members 11 and 11. The horizontal members 13 are disposed at the upper end portion and the lower end portion of the vertical chord member 11, respectively, and extend in the horizontal direction. The diagonal member 12 is disposed between the upper and lower horizontal members 13 and 13 and is disposed on the same surface as the horizontal members 13 and 13. The diagonal member 12 and the horizontal member 13 are both made of steel round pipes. The inclination angle of the diagonal member 12 is 45 ° in this embodiment. The inclination angle of the diagonal member 12 is appropriately determined according to the height dimension of the column structure 10 and the separation dimension between the vertical chord members 11 and 11, and is most preferably 45 °.

  As shown in FIGS. 2, 5, and 6, a gusset plate 15 for joining the diagonal member 12 is welded to the flanges 11 b facing each other. A plurality of gusset plates 15 are provided, and are respectively provided at the attachment positions of the diagonal members 12. Among the plurality of gusset plates 15, the gusset plate 15 disposed at the lower end includes outer circumferences of a lower end portion of the diagonal member 12 positioned at the lowermost end and one end portion (left side in FIG. 2) of the lower horizontal member 13. The surfaces are joined (see FIGS. 2 and 6). One end of the horizontal member 13 is welded to the flange 11b of one longitudinal chord member (left side in FIG. 2) 11. The other end (right side in FIG. 2) of the horizontal member 13 is directly welded only to the flange 11b of the other vertical chord member 11. Among the plurality of gusset plates 15, the gusset plate 15 arranged at the upper end includes an outer peripheral surface of the uppermost end of the diagonal member 12 and the other end (right side in FIG. 2) of the upper horizontal member 13. Are joined (see FIGS. 2 and 6). The other end of the horizontal member 13 is welded to the flange 11b of the other vertical chord member (right side in FIG. 2) 11. One end of the horizontal member 13 is directly welded to the flange 11b of one longitudinal chord member (left side in FIG. 2) 11.

  Two diagonal members 12 are joined to a gusset plate 15 provided at an intermediate portion other than the upper and lower gusset plates 15, 15. The gusset plate 15 extends along the longitudinal direction of the vertical chord member 11 and extends in the normal direction of the outer peripheral surface. The gusset plate 15 has a rectangular shape, and has a height dimension (vertical length) and a protruding dimension (horizontal length) at which the diagonal member 12 and the horizontal member 13 to be attached can be joined.

  As shown in FIG. 7, slits 16 are formed at both ends of the diagonal member 12 and the horizontal member 13 (only one end portion of the diagonal member 12 is shown in FIG. 7). The slit 16 is a portion through which the gusset plate 15 is inserted, and has a width dimension (a dimension slightly larger than the thickness dimension of the gusset plate 15) through which the gusset plate 15 can be inserted. The slits 16 are formed at two locations facing each other on the outer peripheral edge of the end of the round pipe. The slits 16 are positioned on the upper and lower sides of the outer peripheral edge in a state where the diagonal member 12 and the horizontal member 13 are attached to the gusset plate 15. The oblique member 12 and the horizontal member 13 are inserted into the gusset plate 15 by inserting the gusset plate 15 through the slits 16 and 16 and welding the portion where the inner peripheral surface of the slit 16 and the surface of the gusset plate 15 are attached to each other. It is joined. Welding is performed over the entire circumference of the inner circumferential surface of the slit 16.

  As shown in FIGS. 1, 2, and 8, a connection plate 30 is provided at a connection portion between the column structure 10 and the beam member 3. The connection plate 30 is made of an iron plate and is orthogonal to the top horizontal plate 19. The top horizontal plate 19 has a width dimension equivalent to that of the beam member 3 and is in contact with the bottom surface of the beam member 3 (see FIG. 8). The top horizontal plate 19 includes a bolt insertion hole 19a, and a long bolt 20 penetrating the beam member 3 in the vertical direction is inserted therethrough. The tip of the long bolt 20 protrudes upward from the upper surface of the beam member 3, and a nut 21 is screwed to the tip of the long bolt 20.

  The connection plate 30 is in contact with the side surface of the beam member 3, and the lower end portion of the connection plate 30 is welded to the side surface of the top horizontal plate 19. The connection plate 30 is provided on both the outside and inside of the beam member 3. A plurality of bolt insertion holes 31 (see FIG. 8) are formed in the connection plate 30. The bolt insertion holes 31 are arranged three by three vertically in two rows on the left and right as viewed from the side. A long bolt 22 that penetrates the beam member 3 in the horizontal direction is inserted into the bolt insertion hole 31. The bolt insertion hole 31 is arranged so that the long bolt 22 does not interfere with the long bolt 20. The number and position of the bolt insertion holes 31 are appropriately set according to the dimensions of the beam member 3 and the strength of the column structure 10.

  The long bolt 22 is inserted from the outside toward the inside in the order of the outer connection plate 30, the beam member 3, and the inner connection plate 30. The tip of the long bolt 22 protrudes inward from the side surface of the inner connection plate 30, and a nut 23 is screwed to the tip of the long bolt 22. By tightening the nut 23, the two connection plates 30 and 30 hold the beam member 3.

  As shown in FIGS. 1 and 2, the base 5 is notched at the connection portion between the column structure 10 and the foundation 4, and the column structure 10 is directly placed on the rising portion 6 of the foundation 4. . Specifically, the bottom horizontal plate 18 is in contact with the upper end surface of the rising portion 6. Bolt insertion holes (not shown) are formed in the bottom horizontal plate 18, and anchor bolts 24 embedded in the foundation 4 are inserted therethrough. The upper end portion of the anchor bolt 24 protrudes upward from the bottom horizontal plate 18, and the column structure 10 is fixed to the foundation 4 by screwing a nut 25 into the upper end portion. In addition, when the height adjustment of the rising part 6 is required, the column structure 10 is installed through adjustment mortar.

  According to the building reinforcing structure 1 configured as described above, the truss-like metal pillar structure 10 having a high strength is integrated into the wall 2 as a part of the structural material of the wooden building. Therefore, even if an earthquake occurs after many years have passed since completion, the column structure 10 is not easily detached from the wooden structure material, and the strength of the column structure 10 itself is high, so that the strength as a bearing wall can be maintained for a long period of time. .

  In particular, in this embodiment, the column structure 10 is fixed to the beam member 3 via the connection plate 30 that contacts the side surface of the beam member 3 without cutting the beam member 3 that has been cut in the past. Reduction of construction labor and construction time can be achieved.

  Since the connection plate 30 is fixed to the beam member 3 with the long bolts 22 and the nuts 23, the fixing strength between the column structure 10 and the beam member 3 can be increased. Further, since the beam member 3 is sandwiched between the two connection plates 30 and 30, the fixing strength between the column structure 10 and the beam member 3 can be further increased. Further, since the top horizontal plate 19 is fixed to the beam member 3 via the long bolts 20, the fixing strength between the column structure 10 and the beam member 3 can be further increased.

  Further, since the connection plate 30 abuts the side surface of the beam member 3 and is fixed by a plurality of long bolts 22 and nuts 23, the stress acting from the column structure 10 is transmitted to the beam member 3 while being dispersed. Can do.

  Further, since the diagonal member 12 and the horizontal member 13 are constituted by round pipes, stress does not act locally like square pipes or H-shaped steel, and stress acts from any direction on the outer peripheral surface. However, since the rigidity is constant, there is no portion where the plate thickness becomes thicker than necessary. Therefore, the diagonal member 12 and the horizontal member 13 can be made to the minimum necessary plate thickness, and the column structure 10 can be reduced in weight and rigidity at the same time.

  In addition, a slit 16 is formed at the end of the diagonal member 12, and the gusset plate 15 attached to the vertical chord member 11 is inserted into the slit 16 and welded, so that the welding length can be ensured. it can. Thereby, the fixing strength between the diagonal member 12 and the vertical chord member 11 can be increased.

  Next, a second embodiment of the present invention will be described in detail with reference to FIG. As shown in FIG. 9, the building reinforcement structure according to the second embodiment is provided with pillar structures 110, 10 over a plurality of levels (for example, the first floor and the second floor), and the upper and lower pillar structures 110, 10 are provided. 10 is integrated. Specifically, the upper and lower column structures 110 and 10 are connected via the connection plate 30 at the joint portion with the beam member 3.

  In the connection between the columnar structure 10 on the lower floor and the connection plate 30, the lower end portion of the connection plate 30 is welded to the side surface of the top horizontal plate 19 as in the first embodiment shown in FIG. 9. The upper end portion of the connection plate 30 protrudes upward from the upper end of the beam member 3 and is welded to the side surface of the bottom horizontal plate 118 provided at the lower end portion of the vertical chord member 111 of the columnar structure 110 on the upper floor. . The connection plate 30 is provided on both the outside and inside of the beam member 3. The long bolt 22 is inserted through the outer connection plate 30, the beam member 3, and the inner connection plate 30 in this order from the outside toward the inside. The tip of the long bolt 22 protrudes inward from the side surface of the inner connection plate 30, and a nut 23 is screwed to the tip of the long bolt 22. By tightening the nut 23, the two connection plates 30, 30 sandwich the beam member 3. Further, the bottom horizontal plate 118 and the top horizontal plate 19 of the lower floor column structure 110 are connected in a cylindrical shape by a pair of connection plates 30 and 30 and surround the beam member 3. The fixing strength between the column structures 110 and 10 and the beam member 3 is increased. Furthermore, the pair of upper and lower pillar structures 110 and 10 are connected via the connection plates 30 and 30.

  The bottom horizontal plate 118 of the columnar structure 110 on the upper floor has a width dimension equivalent to that of the beam member 3 and is placed on the upper surface of the beam member 3. The bottom horizontal plate 118 is provided with a bolt insertion hole 118a, and a long bolt 20 that penetrates the beam member 3 in the vertical direction is inserted therethrough. The front end portion of the long bolt 20 protrudes upward from the upper surface of the bolt insertion hole 118a, and the nut 21 is screwed to the front end portion of the long bolt 20. By tightening the nut 21, the beam member 3 is sandwiched between the bottom horizontal plate 118 and the top horizontal plate 19, and the upper and lower column structures 110 and 10 are connected.

  According to the building reinforcement structure having the above configuration, the upper and lower column structures 110 and 10 can be integrated, so that a large through-column having the width of the column structure 10 can be obtained. While being able to enlarge further, the rigidity of the whole building can be enlarged. In particular, in this embodiment, since the upper and lower column structures 110 and 10 are connected by both the connection plates 30 and 30 and the long bolts 20 and 20, the column structures 110 and 10 can be firmly connected.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the said embodiment, A design change is possible suitably in the range which does not deviate from the meaning of this invention. For example, in the above embodiment, the connection plate 30 is welded to the top horizontal plate 19, but is not limited to this. The connection plate 30 and the top horizontal plate 19 may be integrally formed in advance to have an L-shaped cross section or a gate-shaped cross section.

  Moreover, in the said embodiment, although the diagonal 12 is comprised with the steel round pipe, it is not limited to this, For example, if it has required rigidity, for example, H-section steel and an angle You may comprise by the shape steel of other shapes, such as a material.

  Moreover, in the said embodiment, although the lower end part of the column structure 10 is mounted in the standing part 6 of the foundation 4, it is not limited to this. The lower end portion of the column structure 10 may be directly placed on the base 5 without cutting out the base 5. According to such a structure, the effort which processes the base 5 is abbreviate | omitted.

DESCRIPTION OF SYMBOLS 1 Building reinforcement structure 3 Beam member 10 Column structure 11 Vertical chord material 12 Diagonal material 13 Horizontal material 18 Bottom horizontal plate 19 Top horizontal plate 30 Connection plate

Claims (3)

A metal column structure comprising a plurality of vertical chord members extending in the vertical direction and a plurality of diagonal members spanned between the vertical chord members is installed in the wall of a wooden building. It is a building reinforcement structure used as
The column structure and the beam member located above the column structure are connected via a connection plate that is perpendicular to the top horizontal plate provided at the upper end of the vertical chord member and contacts the side surface of the beam member. Characteristic building reinforcement structure. The connection plate is provided on both the outside and the inside of the beam member,
The building reinforcing structure according to claim 1, wherein the beam member is clamped by the connection plate by inserting a long bolt through the two connection plates and the beam member and tightening with a nut. . The pillar structure is provided on a plurality of floors,
The connection plate is provided on both the outside and the inside of the beam member,
The beam member is composed of the top horizontal plate provided at the upper end of the column structure on the lower floor, the bottom horizontal plate provided at the lower end of the column structure on the upper floor, and the two connection plates. The building reinforcement structure according to claim 1, wherein the building reinforcement structure is enclosed.

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