JP6444048B2 - Seismic reinforcement equipment for wooden buildings - Google Patents

Description

  The present invention is capable of exhibiting excellent deformation performance and improving rigidity so as to make use of the deformation performance of a wooden building, and that an excessive force is transmitted to a wooden structure material such as a small cross section. Further, the present invention relates to a seismic reinforcement device for a wooden building that can be appropriately held so that an attached design material does not fall off and can have a beautiful appearance.

  In recent years, when an existing wooden building is seismically reinforced, a technology that can be constructed only from the outside of the wooden building while leaving the vertical surface of the outer wall or the like as it is is increasing. Old wooden buildings that require seismic reinforcement are generally low in rigidity, but have excellent deformability. For this reason, in the earthquake-proof reinforcement of a wooden building, what makes use of the balance with the performance of the building itself, that is, the deformation performance of the building is preferable.

  Patent Documents 1 and 2 are known as this type of seismic reinforcement technology. Patent Document 1 “Aseismic Strengthening Structure for Wooden Houses, Seismic Strengthening Method for Wooden Houses and Seismic Strengthening Brackets” is more reinforced than conventional ones in seismic reinforcement of wooden houses by suppressing the decrease in the reinforcing effect of reinforcing members such as braces. It provides a seismic reinforcement structure and a seismic reinforcement method using a seismic reinforcement bracket capable of improving the effect, and includes a female screw shaft having a mounting screw hole and a female screw shaft formed at the base end of the female screw shaft. A seismic reinforcing metal fitting provided with a collar portion having a plurality of fixing holes around the periphery thereof. A plurality of seismic reinforcement brackets are fixed to the corners of the walls surrounded by the pillars, beams, foundations, and foundations of the wooden house by fixing anchors through fixing holes formed in the flanges of the seismic reinforcement brackets. The reinforcing plate is fastened to the tip of the female screw shaft of the plurality of seismic reinforcing metal fittings, and the brace is fastened to the tip of the female screw shaft of one of the seismic reinforcing metal fittings.

  The seismic reinforcement element is a brace whose end is fixed to the corner of the wall, and this brace is provided on the outside of the wooden house by a seismic reinforcement metal member so as to be separated from the wooden house. When seismic force is applied, tensile and compressive forces are generated in the bracing, and the bracing is deformed out of plane.

  Patent Document 2 “Reinforcement Member of Wooden Structure and Reinforcement Method Using This” provides a reinforcement member that improves seismic performance by connecting pillars such as existing or newly built wooden houses or wooden shrines and columns. It is a ladder frame that connects between the cylinders and improves the earthquake resistance performance of the wooden structure, and is arranged vertically, and two or more string members that are long in the in-plane direction of the cylinders and the cylinders; The string member includes a column coupling metal for coupling the left and right sides of the string member to the column, and a bundle member that is disposed between the string members and connects the string members to each other. A tenon for connection is provided on one side, a tenon portion to be inserted into the tenon hole is provided on the other side, and at least one of the tenon hole and the tenon portion is made of wood.

  The ladder frame is provided in the plane between the columns. In order to fix the string member of the ladder frame to the column, the connecting hardware is directly fixed to the column with a plurality of bolts. When the seismic force is applied, deformation occurs at the connecting portion between the string member and the bundle member in the plane between the columns, and the ladder frame is distorted in the plane between the columns.

JP 2010-007454 A JP 2007-138612 A

  The disclosed technique of Patent Document 1 increases the rigidity by bracing, but inhibits the deformation performance of a wooden house. For bracing, it was difficult to attach a design material to make the appearance beautiful. Since bracing deforms out of plane when subjected to an external force such as an earthquake, even if the design material can be attached, it may fall off and is unsuitable for attachment of the design material.

  For this reason, in patent document 1, only the bracing is installed outside the wooden house and the appearance of the building is not good. In particular, traditional wooden buildings are detrimental to aesthetics, making it difficult to adopt them as seismic reinforcement structures.

  In Patent Document 2, since the ladder frame is provided in the plane between the pillars, it cannot be adopted when there is a wall between the pillars. did not become. The connecting member is directly attached and fixed to the column itself, and the ladder frame is installed on the column, and a large shear force is generated at the joint portion between the connecting member and the column.

  For this reason, many bolts are required to firmly attach the connecting member to the pillar, and it is generally unsuitable as a structure for joining to a wooden pillar having a small cross section. Since the ladder frame is distorted in the plane between the columns, the attached design material tends to drop off, which is unsuitable for attaching the design material.

  The present invention was devised in view of the above-described conventional problems, and can exhibit excellent deformation performance and improve rigidity so as to make use of the deformation performance of wooden buildings, and has a small cross section. It is possible to prevent excessive force from being transmitted to wooden structural materials such as, and furthermore, it is possible to appropriately retain the attached design material so that it does not fall off and obtain a beautiful appearance An object is to provide a seismic reinforcement device for wooden structures.

The seismic reinforcement device for a wooden building according to the present invention includes two or more steel vertical members disposed along the height direction of the wooden building and spaced apart from each other in the left-right direction, and the steel Provided at both upper and lower ends of the vertical member, the steel vertical member is fixed to the structural material of the wooden building with a clearance from the vertical surface of the wooden building, and the adjacent steel vertical member. A plurality of steel transverse members arranged in the same plane as the steel vertical member, and arranged in the same plane as the steel vertical member, and arranged between the members along the left-right direction and spaced apart from each other in the vertical direction. A flat plate that is provided at both ends, and is connected to the steel vertical member by joining the steel vertical member and the steel horizontal member to each other on one of the front and back plate surfaces. A connecting member, and the flat connecting member is provided between the steel transverse member and the steel longitudinal member. An energy absorbing portion that absorbs energy by being deformed by a force transmitted between the steel horizontal member and the steel vertical member is formed, and the mounting surface of the steel vertical member to the wooden building is formed. Are connected to the steel vertical member, and are connected to the steel vertical member at a position offset in the vertical direction from the steel horizontal member, and the steel horizontal member and the steel vertical member respectively. In the overlapping direction of the flat connecting members, the thickness of the energy absorbing portion is smaller than the cross-sectional dimensions of the steel transverse member and the steel longitudinal member.

  In the flat plate-like connecting member, the vertical width dimension of the energy absorbing portion is set to the vertical width dimension of the steel transverse member, and the vertical width dimension of the connecting surface portion is along the steel vertical member. It is set to be larger than the vertical width dimension of the energy absorbing portion, and is formed in a lateral T-shape.

  The plate-like connecting member has its plate surface overlapped and joined to the end of the steel transverse member, and the steel transverse member has at least an outer periphery facing the plate surface of the plate-like connecting member. A corner portion is formed, and the corner portion is curved and formed in an arc shape in which a gap for filling a weld metal is formed between the corner portion and the flat connecting member. .

  A plurality of the energy absorbing portions are formed on the flat connecting member, and the steel transverse members are provided in parallel in upper and lower stages through the energy absorbing portions.

  In the seismic reinforcement apparatus for wooden buildings according to the present invention, it is possible to exhibit excellent deformation performance and improve rigidity so as to make use of the deformation performance of the wooden building, and to improve the rigidity, and to make a wooden structure such as a small cross section An excessive force can be suppressed from being transmitted to the material, and the attached design material can be appropriately held so as not to drop off, and a beautiful appearance can be obtained.

It is explanatory drawing explaining suitable one Embodiment of the earthquake-proof reinforcement apparatus of the wooden building which concerns on this invention. It is explanatory drawing explaining the steel vertical members and attachment members which are used for the seismic reinforcement apparatus shown in FIG. It is explanatory drawing explaining the steel horizontal member and flat plate-shaped connection member which are used for the seismic reinforcement apparatus shown in FIG. It is a front view which shows the flat connection member used for the earthquake-proof reinforcement apparatus shown in FIG. It is a principal part enlarged view which shows the junction part of the flat connection member of the seismic reinforcement apparatus shown in FIG. It is a principal part enlarged view explaining the moment which acts on the connection location periphery by the flat connection member shown in FIG. It is a principal part expanded sectional view which shows a mode that the design material was attached to the steel horizontal member shown in FIG. It is a front view which shows the other example of a flat connection member. It is a front view which shows the further another example of a flat connection member. It is a principal part enlarged view explaining the moment which acts on the connection location periphery by the flat connection member shown in FIG. It is a front view which shows the vertical surface of the wooden building before installation of the seismic reinforcement apparatus of the wooden building which concerns on this embodiment. It is explanatory drawing which shows a mode that the earthquake-proof reinforcement apparatus of the wooden building which concerns on this embodiment was installed in the vertical surface of the wooden building. It is explanatory drawing which shows a mode that the design material was given to the earthquake-proof reinforcement apparatus of the wooden building which concerns on this embodiment. It is a front view which shows the further another example of a flat connection member. It is a principal part enlarged view which shows the junction part of the flat connection member shown in FIG. 14, a steel horizontal member, and a steel vertical member. It is a front view which shows the further another example of a flat connection member. It is explanatory drawing explaining the further another example of a flat connection member. It is sectional drawing which shows the other example of a steel vertical member and a steel horizontal member.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a seismic reinforcement apparatus for wooden buildings according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an explanatory view for explaining a seismic reinforcement device for a wooden building according to the present embodiment, in which (a) is a front view, (b) is a cross-sectional view taken along line AA, and (c) is an upper surface. FIG. 4D is a cross-sectional view taken along line BB. 2A and 2B are explanatory views for explaining a steel vertical member and a mounting member used in the seismic reinforcement apparatus of FIG. 1, wherein FIG. 2A is a front view and FIG. 2B is a side view. 3A and 3B are explanatory views for explaining a steel transverse member and a flat connecting member used in the seismic reinforcement apparatus of FIG. 1, wherein FIG. 3A is a front view, FIG. 3B is a top view, and FIG. FIG. FIG. 4 is a front view showing a flat connecting member used in the seismic reinforcement apparatus of FIG. FIG. 5 is an enlarged view of a main part showing a joint portion between the flat connecting member and the steel transverse member of the seismic reinforcement apparatus shown in FIG. 1. FIG. 6 is an enlarged view of a main part for explaining the moment acting on the periphery of the connecting portion by the flat plate-like connecting member shown in FIG. FIG. 7 is an enlarged cross-sectional view showing a main part of the design material attached to the steel transverse member shown in FIG. FIG. 8 is a front view showing another example of the flat connecting member. FIG. 9 is a front view showing still another example of the flat connecting member. FIG. 10 is an enlarged view of a main part for explaining the moment acting on the periphery of the connection place by the flat connection member shown in FIG. 9. FIG. 11: is a front view which shows the vertical surface of the wooden building before installation of the earthquake-proof reinforcement apparatus of the wooden building which concerns on this embodiment. FIG. 12 is an explanatory diagram of a state in which the seismic reinforcement device for a wooden building according to the present embodiment is installed in the wooden building, where (a) is a front view, (b) is a side view, and (c) is a plan view. FIG. FIG. 13 is an explanatory diagram of a state in which a design material is applied to the seismic reinforcement device for a wooden building according to the present embodiment, where (a) is a front view, (b) is a side view, and (c) is a plan view. It is.

  As shown in FIG. 1, the seismic reinforcement device 1 for a wooden building according to the present embodiment mainly includes at least two steel vertical members 2 arranged adjacent to each other in the left-right direction and adjacent steel. A plurality of steel transverse members 3 arranged at intervals in the vertical direction between the longitudinal members 2, a flat connecting member 4 that connects the steel transverse members 3 and the steel longitudinal members 2, and The steel vertical member 2 includes an attachment member 6 that attaches and fixes both ends in the vertical length direction to the wooden building 5 (see FIG. 11 and the like).

  As shown in FIGS. 1 and 2, the steel longitudinal member 2 is formed of a light and rigid tubular material that is long in the axial direction, for example, a square steel pipe. The steel vertical member 2 is provided along the height direction of the existing wooden building 5 as understood by referring to FIG. 11 and FIG. 12. It is provided along the up-and-down direction of the wood pillar material 7. Two or more steel vertical members 2 are provided at a distance from each other in the left-right direction, facing a vertical surface from the foundation of the wooden building 5 or the base 8 to the beam member 9 or the roof. In the earthquake-proof reinforcement device 1 according to the present invention, it is preferable that the steel vertical members 2 positioned at least on the outermost row side in the left-right direction are provided along the vertical direction of the wooden column member 7.

  At both ends in the vertical length direction of the steel vertical member 2, a steel mounting member 6 is provided in order to fix the steel vertical member 2 to the wooden building 5. The attachment member 6 is formed from the steel vertical member 2 to the outside so that a gap S is provided between the steel vertical member 2 and the vertical surface of the wooden building 5 (see FIG. 12 and the like). It is formed in an external form of a size that protrudes toward the vertical surface.

  In this embodiment, the attachment member 6 has an attachment joint surface 6a having a size larger than the cross-sectional dimension of the end surface 2a at both ends in the vertical length direction of the steel vertical member 2, and the end surface 2a of the steel vertical member 6 is It is joined to the steel vertical member 2 so as to approach the end of the attachment joining surface 6a.

  The attachment member 6 is integrally joined to the steel vertical member 2 by being joined to a closing plate (not shown) provided on the end surface 2a of the steel vertical member 2 with a drill screw or the like, or directly welded to the end surface 2a. Provided. In the illustrated example, the attachment member 6 has a triangular plate member 6c spanned on each side edge of the attachment joint surfaces 6a and 6b on an L-shaped plate member having a pair of attachment joint surfaces 6a and 6b substantially orthogonal to each other. Is formed.

  The attachment member 6 is joined to the steel vertical member 2 at one attachment joint surface 6a, and joined to the wooden building 5 at the other attachment joint surface 6b. The steel vertical member 2 is joined to the one attachment joint surface 6a so as to approach the end farthest from the other attachment joint surface 6b. Since the joining position of the steel vertical member 2 is separated from the other mounting joint surface 6b joined to the wooden building 5, the mounting member 6 is connected to the vertical side of the wooden building 5 from the steel vertical member 2. It is provided to rush toward.

  The other attachment joint surface 6b of the attachment member 6 is applied so as to straddle the structural material of the wooden building 5, specifically, the wooden pillar material 7, the base 8, the foundation, the beam material 9, or the like. These are joined with a drill screw or the like. One of the attachment members 6 is formed by joining the other attachment joint surfaces 6b of the attachment members 6 provided at both ends in the vertical length direction of the steel vertical member 2 to a structural material such as the base 8 of the wooden building 5. The steel vertical member 2 joined to the attachment joint surface 6a is attached and fixed to the wooden building 5 with a gap S from the vertical surface.

  The attachment member 6 has a spacer function for forming a gap S between the steel vertical member 2 and the vertical surface of the wooden building 5, and can attach and fix the steel vertical member 2 to the wooden building 5. As long as it is not limited to the illustrated example, it may have any form / structure.

  As shown in FIGS. 1 and 3, the steel transverse member 3 is formed of a light and rigid tubular material that is long in the axial direction, for example, a square steel pipe. As can be understood by referring to FIGS. 11 and 12, the steel transverse member 3 is adjacent to one of the two or more steel longitudinal members 2 arranged along the vertical direction of the wooden column member 7. A plurality of steel longitudinal members 2 are arranged along the left-right direction and spaced apart in the vertical direction.

  The steel transverse member 3 is assembled in the same plane as the steel longitudinal member 2. Assembling in the same plane means that the steel longitudinal member 2 and the steel transverse member 3 are assembled side by side on a single assembly surface, and almost no moment is generated when they are connected together. In addition, a state in which force is transmitted smoothly mainly with axial force and shearing force.

  The flat connecting member 4 is formed of a plate material having flat front and back plate surfaces, and in order to connect the steel horizontal member 3 to the steel vertical member 2 as shown in FIGS. The lateral members 3 are provided at both ends in the left-right length direction. The flat connecting member 4 is basically between the left and right longitudinal ends of the steel transverse member 3 and the steel longitudinal member 2, and between the end of the steel transverse member 3 and the steel longitudinal member 2. It is formed in the left-right direction dimension which is stretched over and overlaps these.

  That is, one end of the flat connection member 4 in the left-right direction is overlaid on the end of the steel transverse member 3, and the other end in the left-right direction is overlaid on the steel vertical member 2. The steel vertical member 2 mounted and fixed to the wooden building 5 by the mounting member 6 has the outer surface facing the wooden building 5 as the mounting surface, and this mounting surface or the outer surface opposite to the mounting surface is The other end in the left-right direction of the flat connection member 4 is overlapped with the joint surface 2b along the mounting surface.

  In the illustrated example, the other end in the left-right direction of the flat connecting member 4 is the side where the mounting member 6 protrudes from the steel vertical member 2 with respect to the steel vertical member 2, that is, the surface facing the wooden building 5. It is superimposed on the opposite joint surface 2b. In this case, one end of the flat connecting member 4 in the left-right direction is joined to the joining surface 3 a opposite to the surface facing the wooden building 5 with respect to the steel transverse member 3.

  When the flat connection member 4 is overlapped with the surface facing the wooden building 5 of the steel vertical member 2 as the joining surface 2b, the steel horizontal member 3 also faces the wooden building. The surfaces are overlapped as the joint surface 3a.

  Therefore, the flat connecting member 4 is joined by superposing the steel vertical member 2 and the steel horizontal member 3 on one of the front and back plate surfaces. Thereby, the steel vertical member 2 and the steel horizontal member 3 are assembled | attached in the same plane.

  The flat connection member 4 is integrally provided on the steel transverse member 3 by welding and joining one end thereof in the left-right direction to the end of the steel transverse member 3 in the left-right length direction. As shown in FIG. 5, the steel transverse member 3 formed of a tubular material and overlaid with the plate surface at one end portion in the left-right direction of the flat connection member 4 has at least an outer periphery (joint surface 3 a) facing the plate surface. The corner portion 3b is formed in an arc shape in which a gap D for filling the weld metal W is formed between the corner portion 3b and the flat connecting member 4. . Thereby, high weld joint strength is securable.

  The flat connecting member 4 may be provided by butt welding to the steel transverse member 3. The flat connecting member 4 may be integrally provided on the steel transverse member 3 by joining with a drill screw or the like. Alternatively, the flat connecting member 4 may be provided integrally with the steel transverse member 3 by processing and forming the steel transverse member 3 itself.

  The flat connection member 4 is connected to the steel vertical member 2 by overlapping the connection surface portion 4a at the other end in the left-right direction with the bonding surface 2b of the steel vertical member 2 and joining them with a drill screw or the like. The position Y where the connecting surface portion 4a is joined to the joining surface 2b with a drill screw or the like is set to a position offset in the vertical direction from the steel transverse member 3.

  That is, the connection surface portion 4a of the flat connection member 4 is disposed at a position where the steel transverse member 3 (in the figure, a virtual extension portion where the steel transverse member 3 intersects the steel longitudinal member 2 is indicated by a region X). A drill screw or the like on the steel vertical member 2 that is disposed between both sides in the vertical direction and above and below the horizontal position of the steel horizontal member 3 that is spaced wider than the vertical width of the steel horizontal member 3. Are joined together.

  The flat connecting member 4 is positioned between the steel vertical member 2 to which the connecting surface portion 4a at the other end in the left-right direction is connected and the steel horizontal member 3 to which one end in the left-right direction is connected. The cross-sectional dimension is set smaller than the cross-sectional dimensions of the steel vertical member 2 and the steel horizontal member 3, and the energy is absorbed by being deformed by the force transmitted between the steel vertical member 2 and the steel horizontal member 3. An energy absorbing portion 10 is formed.

  In this embodiment, the flat connection member 4 is plate-shaped, and is formed with a smaller cross-sectional dimension than the steel vertical member 2 and the steel horizontal member 3 which are tubular materials. The energy absorbing portion 10 has a small cross-sectional dimension with respect to the steel vertical member 2 and the steel horizontal member 3, so that the elastic-plastic deformation proceeds prior to the steel vertical member 2 and the steel horizontal member 3. The energy is absorbed by plastic deformation or the like.

  As a result, as shown in FIG. 6, the axial force from the steel transverse member 3 is used around the connection portion between the steel longitudinal member 2 and the steel transverse member 3 by the flat plate-like connection member 4 including the energy absorbing portion 10. A rotational moment M is generated by the shearing force acting on the steel longitudinal member 2 or the shearing force acting on the steel transverse member 3 by the axial force from the steel longitudinal member 2, and energy is generated with respect to this rotational moment M. The absorber 10 undergoes elasto-plastic deformation (in the figure, the deformation mode is indicated by Z), and the energy absorbing action is exhibited.

  In the present embodiment, as shown in FIGS. 1, 3, 4, and 6, a horizontal T-shaped flat plate-like connecting member 4 is shown. The flat connection member 4 is set so that the vertical width dimension of the energy absorbing portion 10 substantially matches the vertical width dimension of the steel horizontal member 3, and the vertical width dimension of the connection surface portion 4a is vertical. It is set to be larger than the vertical dimension of the energy absorbing portion 10 along the member 2.

  If the flat connecting member 4 is formed in this way, regardless of the direction of the moment M, the stress can be smoothly transmitted from the steel transverse member 3 to the steel vertical member 2 via the flat connecting member 4. The energy absorbing unit 10 can be appropriately deformed to absorb energy. Further, the flat connecting member 4 and the steel vertical member 2 can be connected with a small number of drill screws or the like.

  The connection surface portion 4a is preferably formed in an outer shape that is equal to the energy absorbing portion 10 in the vertical direction, that is, is equidistant in the vertical direction around the axis in the horizontal direction of the steel transverse member 3.

  The steel transverse member 3 has a surface opposite to the side facing the wooden building 5, in this embodiment, an outwardly facing surface (joint surface 3a) on which the connection surface portion 4a of the flat connection member 4 is superimposed. 7, the design material 11 is attached with a drill screw or the like that penetrates the steel transverse member 3 formed of a tubular material in the plate thickness direction. In the mounting example shown in FIG. 13, the design material 11 is constructed by laying a series of a plurality of long and narrow timbers in the form of vertical stripes across a plurality of steel transverse members 3 arranged vertically. ing.

  FIG. 8 shows another example of the flat connecting member. The illustrated flat connecting member 12 is formed in a cross shape combining horizontal T-shapes. That is, the cross-shaped flat plate connecting member 12 includes energy absorbing portions 10 on both the left and right sides of the central connecting surface portion 12a, and is connected to the left and right steel horizontal members 3 via these energy absorbing portions 10. .

  The horizontal T-shaped flat connecting member 4 is used for the steel vertical members 2 arranged at the right end and the left end among the two steel vertical members 2 arranged at intervals in the left-right direction. Is suitable. The cross-shaped flat plate-like connecting member 12 includes a steel vertical member 2 arranged at the center and steel horizontal members arranged on the right and left sides when three steel vertical members 2 are combined into one set. It is suitable for connecting the members 2 together, and by joining the left and right steel transverse members 3 to the central steel longitudinal member 2, the number of man-hours for joining with a drill screw or the like can be reduced by half.

  FIG. 9 shows still another example of the flat connecting member. In the flat connection member 13, a plurality of energy absorbing portions 10 are integrally formed on one side of the connection surface portion 13 a, and the steel transverse members 3 are provided in parallel in upper and lower stages through the energy absorbing portions 10. That is, unlike the case where the steel transverse members 3 and the steel longitudinal members 2 disposed above and below are individually connected by the individual flat connecting members 4, a plurality of steel transverse members 3 are connected to a single member. It is used when connecting to the steel vertical member 2 with the flat connecting member 13.

  In the illustrated example, the flat connecting member 13 has two energy absorbing portions 10, and the two upper and lower steel transverse members 3 are connected to one flat connecting member 13 through these energy absorbing portions 10. Is done. The number of energy absorbing portions 10 is not limited to two, and three or more energy absorbing portions 10 may be provided on a single flat connecting member 13.

  In the flat connection member 13 according to this modification, the two energy absorbing portions 10 are integrally provided in the vertical direction, and therefore, in the vicinity of the connection portion between the steel vertical member 2 and the steel horizontal member 3, as shown in FIG. In addition, the rotational moment M generated by the shearing force from the upper steel transverse member 3 and the rotational moment M generated by the shearing force from the lower steel transverse member 3 are generated in the same direction. These rotational moments M are canceled out at the center in the vertical direction of the surface portion 13a, and are applied to the flat connecting member 13 while ensuring the connection of the two steel transverse members 3 to the steel longitudinal member 2 at a stretch. It is possible to prevent the rotational moment M from becoming excessive and to connect efficiently, and to secure a sufficient bonding strength while reducing the number of bonding steps by a drill screw or the like.

  Next, the effect | action of the earthquake-proof reinforcement apparatus 1 of the wooden building which concerns on this embodiment is demonstrated with reference to FIGS. The seismic reinforcement device 1 according to the present embodiment may be assembled in advance at a factory or the like and carried into a construction site, or may be assembled at a construction site.

  The seismic reinforcement device 1 has a plurality of steel vertical members 2 arranged at appropriate intervals in the left-right direction, and a plurality of steel horizontal members 2 spaced at appropriate intervals in the vertical direction between adjacent steel vertical members 2. The members 3 are arranged and assembled by connecting the both ends in the left-right length direction of the steel transverse member 3 and the steel longitudinal member 2 with the flat connecting members 4, 12, and 13. Then, the attachment member 6 is attached to the up-down length direction both ends of each steel vertical member 2. The attachment member 6 may be attached to the steel vertical member 2 in advance.

  Next, the seismic reinforcement device 1 is attached and fixed to the wooden building 5 with a gap S from the vertical surface by attaching the attachment member 6 to a structural material such as the base 8 of the wooden building 5. In the illustrated example, the three steel vertical members 2 are arranged in the left-right direction with respect to the large sash surface on the left side of the wooden building 5, and the seismic reinforcement device 1 is configured. A horizontal T-shaped flat connecting member shown in FIG. 4 is used to connect the steel vertical member 2 and the steel horizontal member 3 at the right and left ends. 4 is used, and the cross-shaped flat connecting member 12 shown in FIG. 8 is used for connection between the steel longitudinal member 2 and the steel transverse member 3 at the center.

  For the small sash surface on the right side of the wooden building 5, the two steel vertical members 2 are arranged side by side to constitute the seismic reinforcement device 1, and the mounting members 6 are arranged at the upper and lower ends of the wooden column 7. For the connection to the steel transverse member 3 which is fixedly mounted, a flat connection member 13 including the upper and lower energy absorbing portions 10 shown in FIG. 9 is used.

  The seismic reinforcement apparatus 1 is provided with a design material 11 so as to cover the seismic reinforcement apparatus 1 by installing it on the wooden building 5 and then attaching the seismic reinforcement apparatus 1 to the steel transverse member 3 (joint surface 3a thereof). Thereby, the earthquake-proof reinforcement apparatus 1 attached to the wooden building 5 can be concealed by the design material 11, and the external appearance of the wooden building 5 can be maintained beautifully.

  When the seismic force acts, the seismic force is input from the wooden building 5 to the seismic reinforcement device 1. The seismic force is transmitted to the steel vertical member 2 via the mounting member 6, and the force is transmitted from the steel vertical member 2 to the steel horizontal member 3 via the flat connecting members 4, 12, and 13. The reinforcing device 1 resists the transmitted seismic force.

  At this time, the connection surface portions 4a, 12a, 13a of the flat connection members 4, 12, 13 are joined to the steel vertical member 2 at the position Y offset in the vertical direction from the steel horizontal member 3, so that the steel The joint between the horizontal member extending from the horizontal member 3 to the flat connecting members 4, 12, and 13 and the steel vertical member 2 is different from rigid connection or pin connection at vertical and horizontal intersections. It is joined in an intermediate joining form between rigid joining and pin joining, and has both deformability and rigidity that can make use of the deforming performance of the wooden building 5, and these steel transverse members 3 and The steel vertical member 2 can be connected and joined, and the seismic performance of the wooden building 5 can be improved.

  Both ends of the vertical steel member 2 in the vertical length direction are attached and fixed to the structural material such as the base 8 of the wooden building 5 by the mounting member 6, and the steel is made with a gap S from the vertical surface of the wooden building 5. Since the vertical member 2 is installed, the force acting on the joint location (around the flat connecting members 4, 12, 13) between the steel vertical member 2 and the steel horizontal member 3 is directly transmitted to the wooden building 5. In this way, it is possible to suppress an excessive force from being transmitted to a structural material such as a small-sized wooden pillar 7 to which the seismic reinforcement device 1 is attached and fixed. The seismic reinforcement device 1 can be properly installed.

  Since the energy absorbing portion 10 is formed on the flat connecting members 4, 12, and 13, the energy transmitted between the steel transverse member 3 and the steel longitudinal member 2 is absorbed and the connecting surface portions 4 a, 12 a, The rotational moment M generated around 13a can be efficiently and sufficiently reduced, and deformation of the steel vertical member 2 and the steel horizontal member 3 can be suppressed. Since the deformation of the steel vertical member 2 and the steel horizontal member 3 can be suppressed, the design material 11 attached to the seismic reinforcement device 1 can be appropriately held so as not to fall off, and traditional wooden construction whatever the wooden structure 5 including the object can be maintained beautiful appearance.

  The seismic reinforcement device 1 can be easily installed by attaching and fixing the steel vertical member 2 to the structural material such as the base 8 of the wooden building 5 from the outside of the wooden building 5 with the mounting member 6. it can.

  The flat connecting members 4, 12, 13 are set with the vertical width of the energy absorbing portion 10 set to the vertical width of the steel transverse member 3, and the vertical width of the connecting surface portions 4 a, 12 a, 13 a is set to steel. Since it was formed along the vertical member 2 so as to be larger than the vertical width dimension of the energy absorbing portion 10, regardless of the direction of the rotational moment M, and from the steel horizontal member 3 to the flat connecting members 4, 12. , 13, the stress can be smoothly transmitted to the steel vertical member 2, and the energy absorbing portion 10 can be sufficiently deformed. Therefore, the steel longitudinal member 2 and the steel transverse member 3 can be reliably connected even if the number of construction steps such as drill screws is reduced.

  A corner portion 3b is formed on the steel transverse member 3 with respect to the outer periphery facing the plate surface of at least the plate-like connecting members 4, 12, and 13, and the corner portion 3b is connected to the plate-like connecting member 4, When the flat connecting members 4, 12, 13 and the steel cross member 3 are welded together, the gap D for filling the weld metal W between the plates 12, 13 is formed in an arc shape. These can be bonded with high bonding strength.

  Since a plurality of energy absorbing portions 10 are formed in the flat connection member 13 and the horizontal steel members 3 are provided in parallel in the upper and lower stages through these energy absorbing portions 10, a plurality of energy absorbing portions 10 are provided by canceling the rotational moment M. While securing the connection of the steel transverse member 3 to the steel longitudinal member 2 at a stretch, it is possible to prevent the rotational moment M applied to the flat plate-like connecting member 13 from becoming excessive, and to connect efficiently. Sufficient bonding strength can be ensured while reducing the number of bonding steps using a drill screw or the like.

  14 and 15 show still another modification of the flat connecting member. FIG. 14 is a front view of a modified example, and FIG. 15 is an enlarged view of a main part showing a connection portion between a flat connecting member, a steel horizontal member, and a steel vertical member according to the modified example. The flat connecting member 14 may be formed in an L shape.

  One bent L-shaped plate surface 14a is joined to the steel transverse member 3, and the other plate surface is overlaid on the joining surface 2b of the steel longitudinal member 2 as the connection surface portion 14b. Similarly, it is offset from the steel transverse member 3 and joined. The energy absorbing portion 10 is formed between the connecting surface portion 14b and the steel transverse member 3.

  16 and 17 show still another modified example of the flat connecting member. FIG. 16 is a front view, and the flat connecting member 15 is formed in a dogbone shape by forming a notch 15a in the middle portion in the left-right longitudinal direction of a rectangular plate material in order to set the energy absorbing portion 10. It is formed. 17A is a front view, FIG. 17B is a side view, and the flat connecting member 16 has a thin middle portion in the longitudinal direction of the rectangular plate material for setting the energy absorbing portion 10. Formed.

  In any of these flat connecting members 15, 16, the connecting portion with the steel vertical member 2 is offset so as to avoid the arrangement position of the steel horizontal member 3.

  FIG. 18 shows a modification of the steel vertical member 2 and the steel horizontal member 3. In the said embodiment, although these steel vertical members 2 and the steel horizontal members 3 were tubular materials, as shown to Fig.18 (a), even if it is channel steel, it is shown to FIG.18 (b). As such, it may be a lip channel steel.

  The above-described seismic reinforcement device for a wooden building according to the present embodiment can be applied not only to an existing wooden building but also to a new wooden building.

DESCRIPTION OF SYMBOLS 1 Seismic reinforcement apparatus of a wooden building 2 Steel vertical member 2b Joint surface 3 Steel transverse member 3a Joint surface 3b Corner part 4,12-16 Flat connection member 4a, 12a-16a Connection surface part 5 Wooden building 6 Installation Member 7 Wood pillar 8 Base 9 Beam 10 Energy absorbing part D Gap W Weld metal S Gap

Claims (4)

Two or more steel vertical members disposed along the height direction of the wooden building and spaced apart from each other in the left-right direction;
An installation member provided at both upper and lower ends of the steel vertical member, and mounting and fixing the steel vertical member to the structural material of the wooden building with a gap from the vertical surface of the wooden building;
A plurality of steel transverse members arranged in the same plane as the steel longitudinal members, arranged between the adjacent steel longitudinal members in the left-right direction and spaced apart from each other in the vertical direction;
Provided at the left and right ends of the steel transverse member, the steel longitudinal member and the steel transverse member are overlapped and joined to one of the front and back plate surfaces, and the steel transverse member is joined to the steel A flat connecting member connected to the longitudinal member,
The flat connecting member is positioned between the steel transverse member and the steel longitudinal member, and is deformed by the force transmitted between the steel transverse member and the steel longitudinal member to be energy. An energy absorbing portion to be absorbed is formed, superimposed on a joint surface along the mounting surface of the steel vertical member with respect to the wooden building, and the steel vertical member at a position offset in the vertical direction from the steel horizontal member. A connecting surface part to be joined to the member is formed,
Regarding the overlapping direction of the steel transverse member and the steel longitudinal member and the flat connecting member, the plate thickness dimension of the energy absorbing portion is larger than the cross-sectional dimensions of the steel transverse member and the steel longitudinal member, respectively. Seismic reinforcement device for wooden buildings, characterized by being small.   In the flat plate-like connecting member, the vertical width dimension of the energy absorbing portion is set to the vertical width dimension of the steel transverse member, and the vertical width dimension of the connecting surface portion is along the steel vertical member. The seismic reinforcement device for a wooden building according to claim 1, wherein the device is set to be larger than the vertical width dimension of the energy absorbing portion and is formed in a lateral T shape.   The plate-like connecting member has its plate surface overlapped and joined to the end of the steel transverse member, and the steel transverse member has at least an outer periphery facing the plate surface of the plate-like connecting member. A corner portion is formed, and the corner portion is curved and formed in an arc shape in which a gap for filling a weld metal is formed between the corner portion and the flat connecting member. The earthquake-proof reinforcement apparatus of the wooden building of Claim 1 or 2.   The flat plate-like connecting member is formed with a plurality of energy absorbing portions, and the steel transverse members are provided in parallel in upper and lower stages through the energy absorbing portions. Seismic reinforcement equipment for wooden buildings as described in the section.

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