JP2019052475A - Column base hardware for flat column or wooden load bearing wall - Google Patents

Abstract

To provide a column base hardware for a flat column or a wooden load bearing wall which can exhibit sufficient bearing force, ductility capacity and the like even for a flat column or a wooden load bearing wall that is long in a longitudinal direction of a foundation.SOLUTION: A column base hardware comprises: a lower part base plate 11 mounted on a top face of a foundation; a web plate 12 joined with a top face of the lower part base plate 11; an upper part base plate 13 which is joined with an upper part of the web plate 12 and in which a through-hole for a shaft is provided respectively at both of right and left sides in a longitudinal direction; and a shaft 14 which is inserted through the through-hole for a shaft, whose lower end portion is directly or indirectly joined with the top face of the lower part base plate 11, and in which a pin insertion hole 14a through which a drift pin is inserted is formed. The pin insertion hole 14a is formed as a loose hole having a long hole shape and the like and extending in a longitudinal direction of the shaft 14. When the drift pin is inserted, a clearance is generated between an inside surface of the pin insertion hole 14a and an outside surface of the drift pin and at least in the longitudinal direction of the shaft 14.SELECTED DRAWING: Figure 1

Description

  The present invention is a flat column or wooden bearing wall column that is fixed by anchor bolts extending from the foundation, and is fixed to the foundation with a flat column or wooden bearing wall that is long in plan view or has a rectangular cross section in the longitudinal direction of the foundation. It relates to the hardware.

  Conventionally, it is composed of a box part fixed on a foundation and a shaft part standing on the foundation as a column base or a column base metal of a wooden bearing wall, and the box part is provided on the lower surface. Anchor bolts are inserted into the shaft through holes, and nuts are screwed into the foundation to fix them to the foundation, while the shaft part is inserted into a hole provided on the bottom surface of the column, and a drift pin is driven into the column from the side of the column. By fixing, a hardware which fixes a pillar to a foundation is proposed (for example, refer to patent documents 1 and 2).

JP-A-11-148181 JP 2005-30194 A

  By the way, recently, in the field of wooden houses in urban areas, since a parking lot and a store are provided on the first floor, a plan view or a long column in the longitudinal direction of the foundation or a rectangular column with a rectangular cross section or LVL (single plate laminate) Houses with a wooden ramen structure using a wooden bearing wall (see, for example, Japanese Patent No. 3713256 and Japanese Patent Laid-Open No. 9-242222) are gaining popularity.

  In such a wooden house, it is necessary to ensure safety by achieving sufficient proof strength, toughness performance, etc. with a flat column or wooden bearing wall.

  However, the above-mentioned column base hardware of Patent Documents 1 and 2 is for a column base metal for a column having a square section for a conventional construction method, and a flat column or a wooden bearing wall having a rectangular shape in a plan view or a cross section. Therefore, there is a problem that sufficient proof stress and toughness cannot be exhibited when used on a flat pillar or a wooden bearing wall having a rectangular shape or cross section in plan view.

  Therefore, the present invention has been made paying attention to such a problem, and even if it is a flat column or a wooden bearing wall having a rectangular shape in a plan view or a cross section that is long in the longitudinal direction of the foundation, sufficient proof stress and tough performance An object of the present invention is to provide a columnar bracket or a wooden bearing wall that can exhibit the above.

In order to solve the above-mentioned problems, a flat column or a column base metal of a wooden bearing wall according to the present invention is fixed by an anchor bolt extending from a foundation, and a long column in the longitudinal direction of the foundation or a rectangular column whose cross section is rectangular A flat column for fixing a wooden bearing wall to the foundation or a column base of the wooden bearing wall, wherein bolt insertion holes for inserting the anchor bolts are formed on both sides in the longitudinal direction, and are mounted on the upper surface of the foundation. A lower base plate to be placed; a web plate having a lower end joined to the upper surface side of the lower base plate; and an upper portion of the web plate joined to the lower base plate so as to face the lower base plate. The upper base plate on which the load-bearing wall is placed and the through holes for the tensile force receiving members are provided on the left and right sides in the longitudinal direction, respectively, A compressive force receiving member provided between the base plate and the lower base plate, and a through hole for the tensile force receiving member provided in the upper base plate, and a lower end portion directly or indirectly on the upper surface of the lower base plate A tensile force receiving member having a pin insertion hole into which a drift pin for fixing to a flat column or a wooden bearing wall is formed at a portion protruding from the upper base plate. When the drift pin is inserted into the pin insertion hole, the pin insertion hole formed in the receiving member is at least between the inner surface of the pin insertion hole and the outer surface of the drift pin. A first feature is that the clearance is formed in the longitudinal direction.
Further, in the flat columnar or wooden bearing wall column base according to the present invention, a concave portion is formed in the lower portion of the compressive force receiving member, and the leg portions formed on both sides of the concave portion are joined to the upper surface of the lower base plate. This is the second feature.
In the flat columnar or wooden bearing wall column base according to the present invention, the tensile force receiving member has a lower end joined to the tension plate, and the lower end of the tension plate is the tension plate of the web plate. A third feature is that it is indirectly joined to the upper surface of the lower base plate by being joined to a fixed portion, and the tension plate is orthogonal to the longitudinal direction of the upper base plate and the lower base plate. To do.
Moreover, in the column base metal object of the flat column or the wooden bearing wall according to the present invention, the upper end of the tensile plate where the lower end of the tensile force receiving member is joined and the tensile plate fixing part of the web plate are joined. A fourth feature is that a constricted portion having a narrower width than the upper and lower portions is formed between the lower portion and the lower portion.
Further, in the column base of the flat column or wooden bearing wall according to the present invention, a shear force receiving member that receives a shearing force acting on the flat column or wooden bearing wall is provided on the upper portion of the web plate, The upper base plate is formed with a through hole for a shear force receiving member through which the shear force receiving member passes without a gap, and the through hole for the tensile force receiving member formed in the upper base plate is formed in the longitudinal direction of the foundation. A fifth feature is that it has a long hole shape extending long.
Further, the flat column or the wooden bearing wall according to the present invention is configured such that the web plate in the upper base plate is disposed on a lower end surface of the flat column or the wooden bearing wall fixed to a foundation by a column base metal of the flat column or the wooden bearing wall. The central mounting portion and the central mounting portion on the left and right sides of each of the central mounting portion are formed by forming a recess so that the lower end portion of the flat column or the wooden bearing wall does not come into contact with the upper portion of the central mounting portion. And a recess for inserting a tensile force receiving member into which the tensile force receiving member protruding from the through hole for the tensile force receiving member on both the left and right sides of the upper base plate is inserted. A pin insertion hole is formed at a position corresponding to the pin insertion hole of the tensile force receiving member on the lateral side surface of the column or the wooden bearing wall.
Further, another column base metal of the flat pillar or the wooden bearing wall according to the present invention is fixed by an anchor bolt extending from the foundation, and the planar pillar or the wooden bearing wall having a rectangular plan view or a cross section long in the longitudinal direction of the foundation. A columnar or wooden bearing wall bracket for fixing the frame to the foundation, wherein the first columnar bracket and the first columnar bracket are independently provided on the left and right sides of the first columnar bracket. A first lower base plate mounted on the upper surface of the foundation, and a lower end portion, each of which is provided with a second column base metal member provided with a bolt insertion hole through which the anchor bolt is inserted. Is joined to the upper surface side of the first lower base plate, and is joined to the upper portion of the first web plate so as to face the first lower base plate. Is placed between the first upper base plate provided with a through hole for a shear force receiving member and the first upper base plate and the first lower base plate on both sides of the first web plate. A first rib plate provided orthogonal to the first web plate; a shear force receiving member provided on an upper portion of the first upper base plate and protruding from a through hole for a shear force receiving member of the first upper base plate; The second column base metal has a bolt insertion hole through which the anchor bolt is inserted, a second lower base plate placed on the upper surface of the foundation, and a lower end portion of the upper surface of the second lower base plate. A second web plate joined to the side, and an upper part of the second web plate, facing the second lower base plate, The flat column or the wooden bearing wall is placed on the second upper base plate provided with a through hole for a tensile force receiving member, and the second upper base plate and the second lower base plate between the second upper base plate and the second lower base plate. 2 The compression force receiving member provided orthogonal to the web plate and the tensile force receiving member through hole provided in the second upper base plate are passed through, and the lower end portion is directly on the upper surface of the second lower base plate. Or, while being joined indirectly, a portion that protrudes from the second upper base plate has a tensile force receiving member formed with a pin insertion hole into which a drift pin for fixing to a flat column or a wooden bearing wall is inserted. , Provided between the first upper base plate and the first lower base plate and on the opposite side of the compressive force receiving member so as to be orthogonal to the first web plate. The pin insertion hole formed in the tensile force receiving member and having the second rib plate formed is formed in a long hole shape extending in the longitudinal direction of the tensile force receiving member.
Further, another flat column or wooden bearing wall according to the present invention may be configured such that the second column base is provided on a lower end surface of the flat column or wooden load bearing wall fixed to a foundation by a column base metal of the flat column or wooden bearing wall. A central portion is formed by forming a recess in the second upper plate of the hardware so as not to contact the lower end of the flat pillar or the wooden bearing wall above the joint between the second web plate and the second rib plate. And a central mounting portion on both the left and right end mounting portions, and the tensile force receiving member protruding from the tensile force receiving member through holes on the left and right sides of the upper base plate is inserted. A recess for inserting a tensile force receiving member is formed, and a pin insertion hole is formed on a side surface of the flat column or wooden bearing wall at a position corresponding to the pin insertion hole of the tensile force receiving member of the second column base metal Features that are To.

In the column post or the wooden column bearing hardware according to the present invention, each of the tensile force receiving members protrudes from the through hole for the tensile force receiving member formed in the upper base plate of the column base metal, and the tensile force receiving member The pin insertion hole is formed in a long hole shape that is long in the vertical direction, and the pin inserted into the pin insertion hole is positioned at a position above the long hole shape pin insertion hole of the tensile force receiving member. For example, the tensile force receiving member does not bear the compressive force when horizontal force acts on the flat column or wooden bearing wall, and the compressive force applied to the flat column or wooden bearing wall can be borne only by the compressive force receiving member. it can.
As a result, when a horizontal force or rotational force is applied to a flat column or wooden bearing wall installed on this column base metal, the tensile force is borne by the tensile force receiving member, while the compressive force is the compressive force receiving member. It is possible to provide a stress resistance mechanism with independent plastic deformation ability for each stress of “tensile force” and “compressive force”. It is possible to suppress brittle building damage due to the breakage of the horizontal pillars or the wooden bearing walls.

It is a perspective view of the column base metal fitting of the flat pillar or wooden bearing wall of Embodiment 1 which concerns on this invention. It is a front view of the column base metal fitting of the flat pillar or wooden bearing wall of Embodiment 1 which concerns on this invention. It is a side view of the column base metal object of the flat pillar or wooden bearing wall of Embodiment 1 which concerns on this invention. It is a top view of the column base metal object of the flat pillar or wooden bearing wall of Embodiment 1 which concerns on this invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is the DD sectional view taken on the line in FIG. It is the EE sectional view taken on the line in FIG. (A)-(c) It is a front view, a bottom view, and a side view of a lower part of a flat column or a wooden bearing wall that is fixed on a foundation via the column base hardware of Embodiment 1 according to the present invention. It is a front view which shows the state which fixed the flat column or the wooden load-bearing wall on the foundation using the column base metal fitting of the flat column or the wooden load-bearing wall of Embodiment 1 which concerns on this invention. It is a partial notch side view which shows the state which fixed the flat pillar or the wooden bearing wall on the foundation using the column base metal fitting of the flat pillar or the wooden bearing wall of Embodiment 1 which concerns on this invention. It is a partial notch top view which shows the state which fixed the flat pillar or the wooden bearing wall on the foundation using the column base metal fitting of the flat pillar or the wooden bearing wall of Embodiment 1 which concerns on this invention. It is a front view which shows the state which fixed the flat column or the wooden load-bearing wall on the foundation using the column base metal fitting of the flat column or the wooden load-bearing wall of Embodiment 2 which concerns on this invention. It is a partial notch side view which shows the state which fixed the flat pillar or the wooden bearing wall on the foundation using the column base metal of the flat pillar or the wooden bearing wall of Embodiment 2 which concerns on this invention. It is a front view of the column base metal object of the flat pillar or wooden bearing wall of Embodiment 2 which concerns on this invention. It is a top view of the column base metal object of the flat pillar or wooden bearing wall of Embodiment 1 which concerns on this invention. It is a side view of the column base metal object of the flat pillar or wooden bearing wall of Embodiment 1 which concerns on this invention. It is a side view of the 1st column base metal object which comprises the column base metal object of the flat pillar of Embodiment 1 which concerns on this invention, or a wooden bearing wall. It is the FF sectional view taken on the line in FIG.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a flat columnar or wooden bearing wall column base (hereinafter sometimes simply referred to as column base) may be described in detail with reference to the accompanying drawings. The first embodiment described below is merely an example of the first embodiment, and the present invention is not limited to the first embodiment described below, and can be appropriately changed within the scope of the technical idea of the present invention. .

<Configuration of column base 1>
The column base 1 according to the first embodiment is fixed by anchor bolts 3 and fastening nuts 4 extending from the foundation 2 as shown in FIGS. 11 to 13. A pillar or wooden bearing wall (hereinafter sometimes referred to as a wooden bearing wall) 5 is fixed to the foundation 2, and as shown in FIGS. 1 to 9, a lower base plate 11, a web plate 12, and an upper base plate 13, two shafts 14 and 14 that are tensile force receiving members, a tension plate 15, a compression plate 16 that is a compressive force receiving member, a rib plate 17, and a shear dowel 18 that is a shear force receiving member. It is prepared for.

(Lower base plate 11)
The lower base plate 11 is placed on the upper surface of the foundation 2 as shown in FIGS. 11 to 13, and has a width and length corresponding to the width of the foundation 2 and the length of the wooden bearing wall 5 in the longitudinal direction of the foundation 2. As shown in FIG. 5 and the like, bolt insertion holes 11a and 11a through which the anchor bolts 3 are inserted are formed on both sides in the longitudinal direction.

(Web plate 12)
The web plate 12 is formed by cutting a steel plate into a predetermined shape. As shown in FIGS. 1 and 2, the lower end and the upper end are respectively formed on the upper surface of the lower base plate 11 and the lower surface of the upper base plate 13. They are joined by welding or the like and are erected in the vertical direction, and extend in parallel with the longitudinal direction of the lower base plate 11.

  The front view of the web plate 12 is configured as shown in FIG. 1 and FIG. 2, etc., and a central bridge portion 12a that is recessed in the vertical direction in the central portion and is not welded to the upper base plate 13 and the lower base plate 11; The upper and lower end portions provided on both sides of the bridge portion 12a have a pair of leg portions 12b and 12b joined to the lower surface of the upper base plate 13 and the upper surface of the lower base plate 11 by welding or the like.

  As described above, the central bridge portion 12a is a concave portion so as not to be joined to the lower base plate 11 and the upper base plate 13, and the lower surface of the upper base plate 13 is provided with a cylindrical shear dowel 18 described later at the center. A shear dowel mounting portion 12a1 extending to the vicinity is provided.

  The pair of leg portions 12b and 12b are respectively provided on the outer sides of the leg main bodies 12b1 and 12b1 whose lower end and upper end are respectively joined to the upper surface of the lower base plate 11 and the lower surface of the upper base plate 13, and the leg main bodies 12b1 and 12b1. The lower end portion is joined to the upper surface side of the lower base plate 11, while the upper end portion is not joined to the lower surface of the upper base plate 13, and the lower portion of the tension plate 15 is It has the tension plate fixing | fixed part 12b2, 12b2 fixed.

  The leg main bodies 12b1 and 12b1 are provided by joining the rib plates 17 and 17 by welding or the like so as to be orthogonal to the leg main bodies 12b1 and 12b1, that is, orthogonal to the longitudinal direction of the lower base plate 11 and the upper base plate 13, respectively. In addition, semicircular recesses 12b1a and 12b1a are provided at the lower end of the portion where the rib plates 17 and 17 are joined.

  Further, on the outer upper part of each of the leg main bodies 12b1 and 12b1, when the shafts 14 and 14 are inclined or bent due to an earthquake or the like, the inclinations are inclined toward the center side to prevent interference with the shafts 14 and 14. Portions 12b1b and 12b1b are provided.

(Upper base plate 13)
Although the upper base plate 13 has the same length in the longitudinal direction as the lower base plate 11 as shown in FIGS. 1 and 2, etc., the width in the short direction is lower base plate as shown in FIGS. 11 is formed in a rectangular shape smaller than the width of the lower base plate 11, and the upper ends of the leg main bodies 12b1 and 12b1 of the web plate 12 joined to the upper surface of the lower base plate 11 and the upper ends of the rib plates 17 and 17 are welded to the lower surface. And provided so as to face the lower base plate 11.

  As shown in FIG. 4 and the like, the upper base plate 13 is provided with a circular shear dowel through hole 13a1 for passing the shear dowel 18 fixed to the central bridge portion 12a of the upper base plate 13 at the center in the longitudinal direction. On the other hand, shaft through-holes 13a2 and 13a2 for passing the shafts 14 and 14 are provided on the left and right sides, respectively.

  Here, since the shear dowel 18 is welded to the inner surface of the shear dowel through-hole 13a1, the shear dowel 18 has almost no gap between the shear dowel 18 and the shear dowel 18 as shown in FIG. While the outer diameter of the shear dowel 18 is set to be slightly larger than the outer diameter of the shear dowel 18 to receive the shear force acting on the wooden bearing wall 5, the shaft through holes 13 a 2 and 13 a 2 are not subjected to the shear force acting on the wooden bearing wall 5. Each of the upper base plate 13 and the lower base plate 11 is formed in a long hole shape extending in the longitudinal direction.

  Thereby, the shear force acting on the wooden bearing wall 5 is transmitted to the upper base plate 13, the web plate 12, the lower plate 11, and the like via the shear dowel 18, and can be prevented from being transmitted to the shafts 14 and 14. In particular, since the shear dowel 18 is welded to the inner surface of the shear dowel through hole 13a1, the shear force acting on the wooden bearing wall 5 can be reliably transmitted to the upper base plate 13 and the like. However, in the present invention, it is not essential that the shaft through holes 13a2 and 13a2 have a long hole shape.

  Therefore, since the shaft 14 that resists the tensile force passes through the shaft through holes 13a2 and 13a2 of the upper base plate 13 and is fixed to the tensile plate 15, the upper base plate 13 and the lower base plate 11 are deformed in the longitudinal direction. Even if it falls down accordingly, it is possible to prevent the shaft through holes 13a2 and 13a2 formed in the shape of long holes extending in the longitudinal direction of the upper base plate 13 and the lower base plate 11 from inhibiting the deformation and inclination of the shaft 14.

(Shaft 14)
As shown in FIGS. 1 and 4, the shaft 14 is passed through shaft through holes 13 a 2 and 13 a 2 provided in the upper base plate 13, and the lower end is welded to the upper surface of the lower base plate 11 via a tension plate 15. The pin insertion hole 14a into which the drift pin 6 for fixing with a wooden bearing wall is inserted is formed in the part which was indirectly joined by this and protruded from the upper base plate 13.

  Here, the pin insertion hole 14a is formed in a long hole shape extending in the longitudinal direction of each shaft 14, 14, that is, in the vertical direction. Here, the pin insertion hole 14a is shifted by 90 degrees with a predetermined interval between each shaft 14, 14. For example, five places are formed.

  The reason why the pin insertion holes 14a of the shafts 14 and 14 are formed in a long hole shape extending in the longitudinal direction of the shafts 14, 14, that is, the vertical direction, is to make the drift pin 6 resist only the pulling force mainly as described later. This is because 14, 14 bears only the pulling force (tensile force).

  Therefore, the long hole-shaped pin insertion hole 14a provided in the shafts 14 and 14 is, for example, when excessive compression force acts on the column base 1 of the first embodiment and the upper base plate 13 is plastically deformed to the maximum extent, as will be described later. However, the drift pin 6 inserted into the pin insertion hole 14a is not in contact with the lower inner surface of the pin insertion hole 14a, and the compression force is not transmitted to the tension plate 15 via the shaft 14. Keep it.

(Tensile plate 15)
As shown in FIG. 8 and the like, the tension plate 15 has a lower end portion of the shaft 14 joined to the upper end portion 15a by welding or the like, while a lower end portion 15b is joined to the tension plate fixing portion 12b2 of the web plate 12. It is indirectly joined to the upper surface of the lower base plate 11, and is joined to the tension plate fixing portion 12b2 of the web plate 12 perpendicular to the longitudinal direction of the upper base plate 13 and the lower base plate 11, as shown in FIG. ing.

  Further, as shown in FIG. 8 and the like, the tension plate 15 has an upper recess 15a1 formed at the upper end 15a where the lower end of the shaft 14 is fitted and joined by welding or the like, while the lower end 15b has a tension plate. A lower concave portion 15b1 is formed to which the fixed portion 12b2 is joined by fitting or the like.

  Here, the left and right end portions of the upper concave portion 15a1 of the tension plate 15 to which the lower end portion of the shaft 14 is joined are located between the lower end portion of the shaft 14 and the upper concave portion 15a1 of the tension plate 15 as shown in FIGS. Since the welding length is short, it is formed in a triangular shape in plan view so that the groove angle is increased to secure the welding amount and the lower end of the shaft 14 can be welded.

  The width of the upper end portion 15a of the tension plate 15 is larger than the width of the shaft through holes 13a2 and 13a2 for passing the shafts 14 and 14 of the upper base plate 13 as shown in FIGS. Yes.

  Even when a large tensile force acts on the tension plate 15 and extends, the upper end portion 15a of the tension plate 15 reaches the shaft through-hole 13a2 on the lower surface side of the upper base plate 13 before reaching the elongation at which the tension plate 15 breaks. Since it comprised so that it might contact | abut to a periphery, the collapse of the building using this column base metal 1 can be prevented.

  Furthermore, a narrow portion 15c narrower than the upper end 15a and the lower end 15b is formed between the upper end 15a of the tension plate 15 where the upper recess 15a1 is formed and the lower end 15b where the lower recess 15b1 is formed. Is formed.

  Therefore, in the tension plate 15 that supports the shaft 14 that resists the pulling force, when a large pulling force is applied, stress concentrates on the constricted portion 15c and the constricted portion 15c extends, so that the tensile plate 15 is stably plastic. Deformability can be achieved. However, as described above, before reaching the elongation at which the tension plate 15 breaks, the upper end portion 15a of the tension plate 15 is in contact with the peripheral edge of the shaft through hole 13a2 on the lower surface side of the upper base plate 13. It is necessary to design the width and length.

  In the present invention, it is not essential to provide the constricted portion 15c in the tension plate 15, but it is optional and the constricted portion 15c may not be provided. In the column base 1 of the first embodiment, the tension plate 15 is provided, and the shafts 14 and 14 are indirectly joined to the upper surface of the lower base plate 11 via the tension plate 15. The present invention is not limited to this, and it may be configured to be joined directly to the upper surface of the web plate 12 or the upper base plate 11 without using the tension plate 15.

(Compression plate 16)
1 to 3 and the like, the compression plate 16 is located between the upper base plate 13 and the lower base plate 11 and on the outermost sides on the left and right sides, that is, on the outer sides of the web plate 12 and the shafts 14 and 14. 13 is a portion that is joined to the lower surface of the lower base plate 11 by welding or the like and receives a compressive force applied to the upper base plate 13 of the column base 1. Therefore, the thickness of the compression plate 16 is configured to be larger than the thickness of the rib plate 17.

  Here, as shown in FIG. 3 and the like, the compression plate 16 is formed in an arch shape with a concave portion that is not joined to the upper base plate 13 and the lower base plate 11 at the upper and lower portions, and is formed on the upper end portion 16a. A pair of upper leg portions 16a1 and 16a1 are formed and joined to the lower surface of the upper base plate 13 by welding or the like, while a pair of lower leg portions 16b1 and 16b1 are formed on the lower end portion 16b and joined to the upper surface of the lower base plate 11. The However, in the present invention, the arch shape of the compression plate 16 is not essential and is arbitrary.

  As shown in FIG. 3 and the like, a compression plate waist portion 16c is formed between the upper leg portions 16a1, 16a1 and the lower leg portions 16b1, 16b1, and the lower leg portion is larger than the width of the compression plate waist portion 16c. The width of the space 16b3 between 16b1 and 16b1 is narrow.

  Therefore, when an excessive compressive force is applied to the upper base plate 13, the arch portion connecting the compression plate waist portion 16c and the lower leg portions 16b1 and 16b1 is crushed and plastically deformed. Therefore, the shaft 14 bearing the tensile force. , 14 can be ensured toughness without causing the wooden bearing wall 5 to break without causing an excessive tensile force.

  Further, a projecting portion 16b2 in which a part of the arch shape projects downward is provided between the center of the arch shape of the lower end portion 16b, that is, between the pair of lower leg portions 16b1 and 16b1.

  Therefore, even when an excessive compressive force is applied to the upper base plate 13 and the lower leg portions 16b1 and 16b1 are crushed and plastically deformed, the tip end portion (lower end portion) of the protruding portion 16b2 contacts the upper surface of the lower base plate 11, so that the lower end portion The excessive plastic deformation of 16b can be prevented, the excessive fall of the wooden bearing wall 5 does not occur, and the collapse of the building can be prevented.

(Rib plate 17)
The rib plate 17 is between the upper base plate 13 and the lower base plate 11 and inside the shafts 14 and 14 so as to be orthogonal to the web plate 12 as shown in FIGS. The upper base plate 13 is joined to the lower surface of the upper base plate 13 and the upper surface of the lower base plate 11 by welding or the like, and receives the compressive force applied to the upper base plate 13 of the column base 1 like the web plate 12. In addition, in the column base metal object 1 of Embodiment 1, the rib plate 17 is provided and described, but the present invention is not limited to this, and the rib plate 17 may be omitted.

(Shear dowel 18)
The shear dowel 18 receives a shearing force in the longitudinal direction of the foundation 2 acting on the wooden bearing wall 5 and is made of a round steel material or the like, as shown in FIGS. 1, 4, 5, 6, or the like. In addition, it is joined to the shear dowel mounting portion 12a1 formed at the center of the central bridge portion 12a of the web plate 11 by welding or the like, and is also formed on the inner surface of the through hole 13a1 for the shear dowel formed at the center in the longitudinal direction of the upper base plate 13. Is also welded and protrudes to the upper surface side of the upper base plate 13 and is inserted into the shear dowel insertion recess 5b1 formed at the lower end portion of the wooden bearing wall 5 without a gap as will be described later. In the column base metal 1 according to the first embodiment, the shear dowel 18 is provided. However, the present invention is not limited to this, and the shear dowel 18 may be omitted.

<Fixing of the wooden bearing wall 5 via the column base 1 of the first embodiment>
Next, a method for fixing the wooden bearing wall 5 to the foundation 2 using the column base 1 of the first embodiment configured as described above will be described.

(Wooden bearing wall 5 and its processing)
The wooden load-bearing wall 5 is a flat column or a wooden load-bearing wall 5 that has a longer dimension in the longitudinal direction than the short direction (width direction) of the foundation, and has a rectangular shape in cross-section or a solid shape. (Single plate laminate).

  And the lower end part of the wooden bearing wall 5 is processed as shown in FIGS. 10 (a) to 10 (c) so that the effect (function) of the column base 1 of the first embodiment can be surely and maximized. .

  Specifically, as shown in FIGS. 10 (a) to 10 (c), the lower end portion of the wooden bearing wall 5 fixed to the foundation 2 using this column base 1 is placed horizontally on the wooden bearing wall 5. In order to clarify the region that bears the pulling force (tensile force) and the compressive force when a force or the like is applied, the joint is joined to the lower surface of the upper base plate 13 of the leg body 12b1, 12b1 of the web plate 12 by welding or the like. A central central mounting portion placed on the upper surface of the upper base plate 13 is formed by notching the lower base portion of the wooden bearing wall 5 to the upper base plate 13 above the upper portion so as to form the recesses 5a and 5a. 5b and left and right end side placing portions 5c, 5c are provided.

  Then, a shear dowel 18 projecting from a shear dowel through-hole 13 a 1 formed at the center in the longitudinal direction of the upper base plate 13 is inserted into the center placement portion 5 b at the center of the lower end portion of the wooden bearing wall 5. Shear dowel insertion recess 5b1 is formed.

  Further, the shaft insertion in which the shafts 14 and 14 projecting from the shaft through holes 13a2 and 13a2 on the left and right sides of the upper base plate 13 are inserted into the left and right end side mounting portions 5c and 5c of the lower end of the wooden bearing wall 5 is inserted. Recesses 5c1 and 5c1 are formed. The recesses 5a and 5a provided in the wooden bearing wall 5 are such that the lower end portion of the wooden bearing wall 5 does not contact the upper base plate 13 above the joint portion of the leg main body 12b1 and 12b1 of the web plate 12 with the lower surface of the upper base plate 13. Thus, for example, it is sufficient to form the notch, so that, for example, the lateral width of the end-side mounting portions 5c, 5c is shortened by securing the lateral width of the recesses 5a, 5a longer than the case shown in FIG. The insertion recesses 5c1 and 5c1 may be formed so that all or a part of the lower end thereof covers the recesses 5a and 5a.

  Furthermore, since a plurality of drift pins 6 are used to fix the wooden bearing wall 5 and the column base 1 of the first embodiment, the drift pins 6 are located at positions corresponding to the pin insertion holes 14a of the shafts 14 and 14. A pin insertion hole 5d is formed in advance so that 6 can be inserted.

  Here, the pin insertion holes 14a of the shafts 14 and 14 are formed in a long hole shape that is long in the vertical direction, and the shafts 14 and 14 can bear only the pulling force applied to the wooden load bearing wall 5. The pin insertion hole 5d is formed at a position such that the drift pin 6 inserted into the pin insertion hole 5d of 5 is positioned above the long hole-shaped pin insertion hole 14a of the shafts 14 and 14.

(Fix wooden bearing wall 5 on column base 1)
As shown in FIGS. 11 to 13, the wooden bearing wall 5 processed as described above is installed on the column base 1 of the first embodiment fixed on the foundation 2 by the anchor bolt 3 and the fastening nut 4. 11 is a front view showing a state in which the wooden bearing wall 5 is fixed to the foundation 2 using the column base 1 of the first embodiment, FIG. 12 is a partially cutaway side view thereof, and FIG. It is a partially cutaway plan view.

  Then, as shown in FIGS. 11 to 13, the shear dowel insertion recess 5 b 1 of the center mounting portion 5 b at the lower end of the wooden bearing wall 5 is joined to the center bridge portion 12 a of the web plate 11 of the column base 1. The shear dowel 18 projecting from the through hole 13a1 for the shear dowel of the upper base plate 13 is inserted, while the shaft insertion recesses 5c1 and 5c1 of the left and right end mounting portions 5c and 5c of the wooden bearing wall 5 are inserted. The shafts 14 and 14 projecting from the shaft through holes 13a2 and 13a2 of the upper base plate 13 are inserted into the upper base plate 13.

  Next, in order to fix the wooden bearing wall 5 to the column base 1, the drift pin 6 is inserted as shown in FIG. 11 from the pin insertion holes 5 d formed in the front, rear, left and right side surfaces of the lower end of the wooden bearing wall 5 in advance. insert.

  Then, as shown in FIGS. 11 to 13, the lower end portion of the wooden bearing wall 5 placed on the upper base plate 13 of the column base 1 can be fixed to the column base 1. However, as described above, the pin insertion holes 14 a of the shafts 14 and 14 are formed in a long hole shape that is long in the vertical direction, so that the shafts 14 and 14 can bear only the pulling force applied to the wooden bearing wall 5. The drift pin 6 inserted into the pin insertion hole 5d of the wooden bearing wall 5 is inserted into a position such that the drift pin 6 is positioned above the elongated pin insertion hole 14a of the shafts 14 and 14.

  Therefore, the shafts 14 and 14 do not bear the compressive force acting on the wooden bearing wall 5 but bear the pulling force (tensile force) acting on the wooden bearing wall 5.

  On the other hand, as shown in FIG. 11 and the like, recesses 5a and 5a are formed at the lower end of the wooden bearing wall 5, and the recesses of the wooden bearing wall 5 are located above the leg main bodies 12b1 and 12b1 of the web plate 12. 5a and 5a are located.

  And since the compression plates 16 and 16 are located through the upper base plate 13 under the lower end part side mounting parts 5c and 5c of the wooden bearing wall 5, the wooden bearing wall 5 is arranged in the α direction shown in FIG. When such a force that falls in the horizontal direction acts, the compression force acting on the wooden bearing wall 5 is mainly borne by the compression plate 16 on either the left or right side (right side in FIG. 11 in FIG. 11). .

<The main effect of the column base 1 of Embodiment 1>
(1) The effect of clearly separating the couple due to the horizontal force applied to the wooden bearing wall 5 For example, considering the case of receiving a horizontal force in the direction of arrow α in FIG. , “Tensile force” in the β direction and “compressive force” in the γ direction.

  Here, the shafts 14, 14 project without being welded to the shaft through holes 13 a 2, 13 a 2 which are formed in the upper base plate 13 of the column base metal 1 and have long holes in the horizontal direction.

  Further, the pin insertion holes 14a of the shafts 14 and 14 are formed in a long hole shape that is long in the vertical direction, and the shafts 14 and 14 can bear only the pulling force applied to the wooden load bearing wall 5. The pin insertion hole 5d is formed at a position where the drift pin 6 inserted into the pin insertion hole 5d is positioned above the long pin-shaped pin insertion hole 14a of the shafts 14 and 14, and the drift pin 6 is inserted. Yes. Therefore, when receiving a horizontal force in the direction of the arrow α in FIG. 11, the shafts 14, 14 hardly bear the compressive force applied to the wooden bearing wall 5 and mainly bear the tensile force.

  Therefore, when receiving a horizontal force in the direction of the arrow α in FIG. 11, the “tensile force” in the β direction is borne by the left shaft 14 in FIG. 11, while the “compressive force” in the γ direction is in the upper part of FIG. The right compression plate 16 bears.

  As a result, when the wooden bearing wall 5 installed on the column base metal 1 receives a horizontal force in the α direction as shown in FIG. The “tensile force” and the “compressive force” in the γ direction can be clearly separated into the load on either the left or right shafts 14 and 14 and the compression plates 16 and 16, respectively. It is possible to provide a stress resistance mechanism having an independent plastic deformation ability for each stress of “compressive force”, and it is possible to suppress brittle building damage due to the destruction of the wooden bearing wall 5.

  In particular, in the first embodiment, in order to clarify the region that bears the compressive force caused by the fall of the wooden bearing wall 5, the lower surface of the upper base plate 13 in the leg main bodies 12b1 and 12b1 of the web plate 12 as shown in FIG. Is placed on the upper surface of the upper base plate 13 by forming recesses 5a and 5a in the upper base plate 13 above the joint portion to be joined by welding or the like so that the lower end portion of the wooden bearing wall 5 is not in contact with it. Since the central central mounting portion 5b and the left and right side end mounting portions 5c and 5c are provided, the “compression force” in the γ direction is not on the web plate 12 and the shafts 14 and 14, but on the FIG. Thus, the compression plate 16 can reliably receive it via the right end-side mounting portion 5c. In this respect as well, it is independent of the respective stresses of “tensile force” and “compression force”. By providing the stress resistance mechanism having a plastic deformation capacity, it can be suppressed damage to brittle building by disruption wooden bearing wall 5.

(2) Effect by Plastic Deformation of Compression Plate 16 In addition, in the column base 1 of the first embodiment, sufficient plastic deformation ability as a wall body cannot be obtained only by the amount of plastic deformation on the tension side. As shown in FIG. 3 and the like, the receiving compression plate 16 is formed in a concave arch shape whose center is not joined to the upper base plate 13 and the lower base plate 11 at both the upper and lower portions, and a pair of lower leg portions is provided at the lower end portion 16b. 16b1 and 16b1 are formed and joined to the upper surface of the lower base plate 11, and the width of the space portion 16b3 between the lower leg portions 16b1 and 16b1 is narrower than the width of the compression plate waist portion 16c.

  Therefore, when an excessive compressive force is applied to the upper base plate 13, the arch portion connecting the compression plate waist portion 16c and the lower leg portions 16b1 and 16b1 is crushed and plastically deformed. Therefore, the shaft 14 bearing the tensile force. , 14 can exhibit a sufficient plastic deformation ability without causing an excessive tensile force.

  Further, as shown in FIG. 3 and the like, a projecting portion 16b2 that projects a part of the arch shape downward is provided between the center of the arch shape of the lower end portion 16b, that is, between the pair of lower leg portions 16b1 and 16b1. Therefore, even when an excessive compressive force is applied to the upper base plate 13 and the lower leg portions 16b1 and 16b1 are crushed and plastically deformed, the tip end portion (lower end portion) of the protruding portion 16b2 contacts the upper surface of the lower base plate 11, so Excessive plastic deformation of the portion 16b can be prevented, and collapse of the building can be prevented.

(3) Effect of following the deformation of the wooden bearing wall 5 The tension plate 15 supporting the shafts 14 and 14 inserted into the wooden bearing wall 5 is parallel to the direction perpendicular to the falling direction of the wooden bearing wall 5. Accordingly, the wooden bearing wall 5 is easily deformed in the direction of falling, and the shafts 14 and 14 are easily tilted following the falling of the wooden bearing wall 5.

  Therefore, when the wooden load bearing wall 5 falls greatly in the α direction and the deformation progresses, the tension plate 15 also bends following the deformation and the shafts 14 and 14 are inclined, so that the wooden load bearing wall 5 is split. This can prevent the brittle fracture of the wooden bearing wall 5.

  In particular, in the column base 1 of the first embodiment, the shafts 14 and 14 that resist the tensile force penetrate the shaft through holes 13a2 and 13a2 provided in the upper base plate 13 and are welded through the tension plate 15 or the like. Although indirectly joined to the lower base plate 11, the shaft through holes 13a2 and 13a2 of the upper base plate 13 extend long in the longitudinal direction of the upper base plate 13 and the lower base plate 11, respectively, as shown in FIG. It is formed in a long hole shape.

  For this reason, the wooden bearing wall 5 greatly falls in the α direction and the deformation progresses. When the tension plate 15 and the shafts 14 and 14 follow the deformation, the inclination and deformation of the shafts 14 and 14 are not hindered. In this respect, it is possible to prevent the wooden bearing wall 5 from being split, and to suppress brittle fracture of the wooden bearing wall 5.

  Further, in the column base 1 of the first embodiment, when the shafts 14 and 14 are inclined on the outer upper portions of the leg main bodies 12b1 and 12b1 in the web plate 12 due to an earthquake or the like, interference with the shafts 14 and 14 is prevented. Therefore, since the inclined portions 12b1b and 12b1b that are inclined toward the center side are provided, the wooden bearing wall 5 greatly falls in the α direction and the deformation proceeds, and the shafts 14 and 14 follow the deformation. Since the shafts 14 and 14 are not hindered from being inclined or deformed, it is possible to prevent the wooden bearing wall 5 from being split even in this respect, and the brittle fracture of the wooden bearing wall 5 can be suppressed.

  Further, as shown in FIG. 4 and the like, the shaft through holes 13a2 and 13a2 of the upper base plate 13 are formed in a long hole shape extending in the longitudinal direction of the upper base plate 13 and the lower base plate 11, whereas for the shear dowel As shown in FIG. 4 and the like, the through hole 13a1 has the same or slightly outer diameter of the shear dowel 18 so that the shear dowel 18 passes through almost without gap and the shear dowel 18 receives a shearing force acting on the wooden bearing wall 5. Since it is formed large, the shear force acting on the wooden bearing wall 5 is transmitted to the upper base plate 13, the web plate 12, the lower plate 11, etc. via the shear dowel 18, and is prevented from being transmitted to the shafts 14, 14. it can.

  As a result, in the column base 1 of the first embodiment, not only the compressive force but also the shearing force is transmitted to the shafts 14 and 14 as much as possible, and only the tensile force acts, so the tensile force is applied to the shaft 14. , 14, compression force is borne by the compression plate 16, and shear force is borne by the shear dowel 18. Plastic deformation independent of the respective stresses of “tensile force”, “compression force” and “shear force”. It becomes possible to perform a stress resistance design having the capability, and it is possible to deal clearly with the brittle building damage caused by the destruction of the wooden bearing wall 5.

(4) Effect of device for preventing collapse of wooden bearing wall 5 In the column base 1 of the first embodiment, the tension plate 15 that supports the lower ends of the shafts 14 and 14 that resist the tensile force is shown in FIG. As shown in FIG. 5, since the constricted portion 15c having a narrower width than the upper end portion 15a and the lower end portion 15b is formed, the tension plate 15 that supports the shaft 14 that resists the pulling force receives a large pulling force. Since stress concentrates on the constricted portion 15c, the tension plate 15 can stably achieve the plastic deformation ability.

  In addition, as described above, the tension plate 15 is formed with the constricted portion 15c having a narrower width than the upper end portion 15a and the lower end portion 15b, and thus is easily broken at the constricted portion 15. 4, the width of the upper end portion 15a of the tension plate 15 is larger than the width of the shaft through holes 13a2 and 13a2 for passing the shafts 14 and 14 of the upper base plate 13, and is too large. The upper end portion 15a of the tension plate 15 is configured to abut on the peripheral edge of the shaft through hole 13a2 on the lower surface side of the upper base plate 13 before reaching the elongation at which the tension plate 15 is broken by a tensile force.

  Therefore, even when an excessive tensile force acts on the tension plate 15 and stress concentrates on the constricted portion 15c and the deformation progresses, the tension plate 15 is prevented from being broken, and the building using the column base 1 is collapsed. Can be prevented.

Embodiment 2.
In the first embodiment, as shown in FIGS. 1 to 13, the two shafts 14, 14 are indirectly connected to the left and right sides of one rectangular base plate 11 by welding or the like via the tension plates 15. Are joined together and protruded from the left and right sides of one upper base plate 13, and a shear dowel 18 in which the lower end portion is joined to the web plate 12 is projected by one column base 1 that protrudes from the center of the upper base plate 13. Although the two wooden bearing walls 5 have been described as being fixed to the foundation 2, in the column base 1 ′ of the second embodiment, the column base 1 1 of the first embodiment is divided into three in the longitudinal direction, and the two shafts 14. , 14 and the shear dowel 18 are configured to be independent of each other.

  FIG. 14 is a front view showing a state in which the wooden bearing wall 5 is fixed on the foundation 2 using the flat column or the wooden bearing wall column base 1 ′ according to the second embodiment of the present invention, and FIG. It is a partially cutaway side view. FIGS. 16 to 20 are a front view, a plan view, a side view, and a side view of the first column base hardware, respectively, of the column base metal 1 ′ of the flat column or the wooden bearing wall according to the second embodiment of the present invention. It is the FF sectional view taken on the line in FIG.

  As shown in FIG. 14 and FIG. 15, in the column base 1 ′ of the second embodiment, the column base 1 of the first embodiment is divided into three in the longitudinal direction, and the two shafts 14, 14, and the shear dowel 18. And the lower base plate 11, the web plate 12, and the upper base plate 13 are divided into three parts in the longitudinal direction.

  That is, in the column base metal 1 ′ of the second embodiment, the lower base plate 11 of the column base 1 of the first embodiment is divided into three in the longitudinal direction, and the first first lower base plate 11A ′ in the center and the two on the left and right sides. While dividing into two second lower base plates 11B ′ and 11B ′, the web plate 12 and the upper base plate 13 of the column base 1 of the first embodiment are similarly divided into three, and each of them has one central first web plate 12A. ', Two second web plates 12B' and 12B 'on the left and right sides, a first upper base plate 13A' in the center, and two second upper base plates 13B 'and 13B' on the left and right sides.

  In the column base 1 ′ of the second embodiment, the shear dowel 18 is formed in the same manner as in the first embodiment by using the first lower base plate 11A ′ in the center, the first web plate 12A ′, and the first upper base plate 13A ′. The first column base metal 1A ′ supported on the left, the two second lower base plates 11B ′ and 11B ′ on the left and right sides, the second web plates 12B ′ and 12B ′, and the second upper base plates 13B ′ and 13B ′. Each of the shafts 14 and 14 is configured by two second column base hardware 1B ′ and 1B ′ that support the shafts 14 and 14 as in the first embodiment.

  However, the column base 1 1 according to the second embodiment is different from the column base 1 according to the first embodiment as the first column base 1A ′ at the center and the second column bases 1B ′ and 1B ′ on the left and right sides. Since the first column base metal 1A ′ and the second column base metal 1B ′, 1B ′ are stabilized, the first column base metal 1A ′ is provided on both sides of the first web plate 12A ′. While the first rib plates 17A ′ and 17A ′ are provided, the second column base hardware 1B ′ and 1B ′ are provided with the second rib plate 17B ′ on the opposite side of the compression plate 16, respectively.

(Fixing of column base 1 'to the wooden bearing wall 5' and the wooden bearing wall 5 'of the second embodiment)
In addition, as shown in FIG. 14 etc., the wooden bearing wall 5 ′ fixed to the column base metal 1 ′ of the second embodiment is processed into a concave portion by processing the lower end portion in the same manner as the wooden bearing wall 5 of the first embodiment. By forming 5a ′ and 5a ′, a central central mounting portion 5b ′ placed on the upper surface of the first upper base plate 13A ′ of the first column base 1A ′ and the second column base 1B ′ and 1B. End side placement portions 5c 'and 5c' on both the left and right sides that are placed on the upper surfaces of the first upper base plates 13B 'and 13B' are provided.

  The central bearing portion 5b ′ at the center of the lower end of the wooden bearing wall 5 ′ protrudes from a through hole 13a1 for shear dowels formed at the center in the longitudinal direction of the upper base plate 13 of the first column base metal 1A ′. A shear dowel insertion recess 5b1 is formed into which the provided shear dowel 18 is inserted.

  On the other hand, through the end mounting portions 5c 'and 5c' on the left and right sides of the lower end of the wooden bearing wall 5 ', the shafts of the first upper base plates 13B' and 13B 'of the second column base metal 1B' and 1B 'are passed. Shaft insertion recesses 5c1 and 5c1 into which the shafts 14 and 14 protruding from the holes 13a2 and 13a2 are inserted are formed. The recesses 5a ′ and 5a ′ provided in the wooden bearing wall 5 ′ are formed on the second web plates 12B ′ and 12B ′ and the second web plates 12B ′ and 13B ′ of the second column base metal 1B ′ and 1B ′. Since it is sufficient to cut and form the lower end portion of the wooden bearing wall 5 ′ so as not to contact the upper portion of the joint portion with the rib plates 17B ′ and 17B ′, for example, the concave portion 5a ′ than the case shown in FIG. , 5a ′ is ensured to be long, so that the lateral width of the end-side mounting portions 5c ′, 5c ′ is shortened, and all or part of the lower ends of the shaft insertion recesses 5c1, 5c1 are formed into the recesses 5a ′, 5a ′. You may form in this way.

  Further, a pin insertion hole 5d is previously formed at a position corresponding to the pin insertion hole 14a of the shafts 14 and 14 in the wooden bearing wall 5 'so that the drift pin 6 can be inserted.

  As shown in FIGS. 14 and 15, the wooden bearing wall 5 ′ processed as described above is arranged such that the central mounting portion 5 b ′ at the center of the wooden bearing wall 5 ′ is the first upper base plate 13 </ b> A of the first column base metal 1 </ b> A ′. 'Mounted on the upper surface and the shear dowel 18 is inserted into the shear dowel insertion recess 5b1 of the central mount portion 5b', while the end load portions 5c 'and 5c' on both sides of the wooden bearing wall 5 'are respectively first. The shafts 14 and 14 are placed on the shaft insertion recesses 5c1 and 5c1 of the end-side placement portions 5c 'and 5c' by placing them on the upper surfaces of the first upper base plates 13B 'and 13B' of the two-pillar hardware 1B 'and 1B'. The drift pin 6 is inserted by aligning the pin insertion hole 5d of the wooden bearing wall 5 and the pin insertion holes 14a of the shafts 14 and 14 with each other.

  Therefore, in the column base metal 1 ′ of the second embodiment, when a force in the α direction acts on the wooden bearing wall 5 ′ as shown in FIG. 11, the shear dowel 18 of the first column base metal 1A ′ bears the shear force. The shafts 14 and 14 of the second column base 1B ′ and 1B ′ of either one (upper left in FIG. 14) bear the tensile force, and the second column base 1B on the other (upper right in FIG. 14). The compression plates 16 and 16 of “, 1B” bear the compression force.

<Effect of Column Base Hardware 1 'of Embodiment 2>
Therefore, in the column base 1 1 of the second embodiment, the column base 1 of the first embodiment is divided into three in the longitudinal direction so that the two shafts 14 and 14 and the shear dowel 18 are independent from each other. Since the first column base 1A ′ and the second column base 1B ′, 1B ′ are configured in the same manner as the first column base 1 according to the first embodiment, the other column bases according to the first embodiment are configured. The effects (1) to (4) obtained by the hardware 1, that is,
(1) The effect of clearly separating the couple due to the horizontal force applied to the wooden bearing wall 5 (2) The effect of plastic deformation of the compression plate 16 (3) The effect of following the deformation of the wooden bearing wall 5 (4) The wooden bearing wall 5 The effect of the effect by the device for preventing the collapse of the can be obtained.

  Further, the column base hardware 1 ′ of the second embodiment is configured by a first column base metal 1A ′ and second column base hardware 1B ′, 1B ′ obtained by dividing the column base metal 1 of the first embodiment into three in the longitudinal direction. Therefore, even when the width of the wooden bearing wall 5, that is, the length in the longitudinal direction of the foundation 2, is changed, the interval between the first column base metal 1A 'and the second column base metal 1B', 1B 'is changed. In this respect, it is superior to the column base 1 of the first embodiment that cannot cope with the change in the width of the wooden bearing wall 5.

  In the above description of the embodiment, the shafts 14 and 14 have been described as being indirectly joined to the upper surface of the lower base plate 11 via the tension plate 15, but the present invention is not limited to this, and the tension plate 15 is not limited to this. You may comprise so that it may join directly to the upper surface of the web plate 12 or the upper base plate 11 without interposing.

  Further, in the description of the above embodiment, the shafts 14 and 14 having a circular shape in plan view have been described as an example of the tensile force receiving member of the present invention. However, the tensile force receiving member of the present invention is not limited to this and is a member that receives tensile force. If so, it is of course possible to use square steel with a square in plan view or a long and narrow plate with a rectangular shape in plan view. In this case, the shaft through holes 13a2 and 13a2 which are the through holes for the tensile force receiving member provided in the upper base plate 11 are not limited to the round through holes, and the rectangular through holes or the like depending on the shape of the tensile force receiving member. Of course, a slit having a square shape or the like may be used. Similarly, as a shear force receiving member according to the present invention, the shear dowel 18 having a circular shape in plan view has been described as an example. However, the shear force receiving member according to the present invention is not limited to this. But of course. In this case as well, the shear dowel through hole 13a1 which is a shear force receiving member through hole provided in the upper base plate 11 is not limited to a round through hole depending on the shape of the shear force receiving member, but a square through hole. Alternatively, a rectangular slit may be used.

  In the description of the first and second embodiments, the pin insertion hole 14a provided in the shaft 14 has been described as a long hole shape that is long in the vertical direction. However, in the present invention, the pin insertion hole 14a is not limited to the long hole shape. When the drift pin 6 is inserted, a clearance is generated at least in the longitudinal direction of the shaft 14 between the inner surface of the pin insertion hole 14a and the outer surface of the drift pin 14, and in particular, a tensile force acts on the wooden bearing wall 5. It is sufficient that the clearance is generated at least on the lower side of the drift pin 6 when it is not, for example, a circular hole or an elliptical loose hole having an inner diameter larger than the outer diameter of the drift pin 6 may be used.

DESCRIPTION OF SYMBOLS 1 Column base 11 Lower base plate 11a Bolt insertion hole 12 Web plate 12a Central bridge part 12a1 Shear dowel attachment part 12b, 12b A pair of leg part 12b1, 12b1 Leg part main body 12b1a, 12b1a Semicircular recessed part 12b2, 12b2 Fixing of tension plate Part 12b1b, 12b1b Inclined part 13 Upper base plate 13a1 Shear dowel through hole (shear force receiving member through hole)
13a2, 13a2 Shaft through hole (Through force receiving member through hole)
14 Shaft (Tensile force receiving member)
14a Pin insertion hole 15 Tensile plate 15a Upper end 15a1 Upper recess 15b Lower end 15b1 Lower recess 15c Constriction 16 Compression plate (compression force receiving member)
16a Upper end 16a1, 16a1 Upper leg 16b Lower end 16b1, 16b1 Lower leg 16b2 Projection 16b3 Space 16c Compression plate waist 17 Rib plate 18 Shear dowel (shear force receiving member)
2 Foundation 3 Anchor Bolt 4 Fastening Nut 5 Flat Pillar or Wooden Bearing Wall 5a, 5a Recess 5b Center Placement 5b1 Shear Dowel Insertion Recess (Shear Force Receiving Member Insertion Recess)
5c, 5c End side mounting part 5c1, 5c1 Shaft insertion concave part (tensile force receiving member insertion concave part)
6 Drift pin

Claims (8)

It is fixed by anchor bolts extending from the foundation, and is a column base or a wooden column bearing base for fixing a flat column or wooden bearing wall having a rectangular shape in plan view or in a long section in the longitudinal direction of the foundation to the foundation. And
Bolt insertion holes for inserting the anchor bolts on both sides in the longitudinal direction are formed, and a lower base plate placed on the upper surface of the foundation,
A web plate having a lower end joined to the upper surface side of the lower base plate;
The flat plate or the wooden bearing wall is placed on the upper surface of the web plate and is opposed to the lower base plate. The through holes for tensile force receiving members are provided on the left and right sides of the longitudinal direction. An upper base plate provided with
A compressive force receiving member provided between the upper base plate and the lower base plate;
The lower base is directly or indirectly joined to the upper surface of the lower base plate while the lower end is directly or indirectly joined to the upper base plate. Or a tensile force receiving member formed with a pin insertion hole into which a drift pin for fixing to a wooden bearing wall is inserted,
The pin insertion hole formed in the tensile force receiving member has at least the tensile force between the inner surface of the pin insertion hole and the outer surface of the drift pin when the drift pin is inserted into the pin insertion hole. A flat columnar or wooden bearing wall column base metal, characterized in that a clearance is generated in the longitudinal direction of the receiving member. In the column pillar metal fitting of the flat pillar or wooden bearing wall of Claim 1,
A concave column is formed in a lower portion of the compressive force receiving member, and leg portions formed on both sides of the concave portion are joined to the upper surface of the lower base plate. In the column base of the flat column or the wooden bearing wall according to claim 1 or 2,
The tensile force receiving member is joined to the upper surface of the lower base plate by joining the lower end portion of the tensile plate to the tensile plate and joining the lower end portion of the tensile plate to the tensile plate fixing portion of the web plate. Has been
The columnar metal bracket of a flat column or wooden bearing wall, wherein the tension plate is orthogonal to the longitudinal direction of the upper base plate and the lower base plate. In the pillar pillar metal fitting of the flat pillar or wooden bearing wall according to claim 3,
Between the upper part where the lower end part of the tensile force receiving member of the tension plate is joined and the lower part joined to the tension plate fixing part of the web plate, the constriction part whose width is narrower than the upper part and the lower part Column pillar hardware of a flat column or wooden bearing wall, characterized in that is formed. In the pillar pillar metal fitting of the flat pillar or the wooden bearing wall according to any one of claims 1 to 4,
On the upper part of the web plate, a shear force receiving member that receives a shear force acting on a flat column or a wooden bearing wall is provided,
The upper base plate is formed with a through hole for a shear force receiving member through which the shear force receiving member passes without a gap, and the through hole for the tensile force receiving member formed in the upper base plate is formed in the longitudinal direction of the foundation. A columnar hardware of a flat column or a wooden bearing wall, characterized by having a long hole shape extending long. In the lower end surface of the flat column or wooden bearing wall fixed to the foundation by the column base of the flat column or wooden bearing wall according to any one of claims 1 to 5,
A central mounting portion and a central mounting portion are formed by forming a recess in the upper base plate so as not to contact the lower end portion of the flat column or the wooden bearing wall above the joint portion with the web plate. End-side mounting portions are provided on both the left and right sides, and the tensile force receiving member is inserted into the tensile force receiving member protruding from the through holes for the tensile force receiving member on the left and right sides of the upper base plate. A recess is formed,
On the side of the flat column or wooden bearing wall,
A flat column or wooden bearing wall, wherein a pin insertion hole is formed at a position corresponding to the pin insertion hole of the tensile force receiving member. It is fixed by anchor bolts extending from the foundation, and is a column base or a wooden column bearing base for fixing a flat column or wooden bearing wall having a rectangular shape in plan view or in a long section in the longitudinal direction of the foundation to the foundation. And
A first column base hardware, and a second column base hardware provided on each of the left and right sides of the first column base hardware independently of the first column base hardware,
The first column base hardware is
A bolt insertion hole through which the anchor bolt is inserted, and a first lower base plate placed on the upper surface of the foundation;
A first web plate having a lower end joined to the upper surface side of the first lower base plate;
The upper part of the first web plate is joined to the first lower base plate so as to face the first lower base plate. On the upper surface, the flat column or the wooden bearing wall is placed, and the through hole for the shear force receiving member is provided. A first upper base plate;
A first rib plate provided between the first upper base plate and the first lower base plate and on both sides of the first web plate so as to be orthogonal to the first web plate;
A shear force receiving member provided on an upper portion of the first upper base plate and protruding from a through hole for a shear force receiving member of the first upper base plate;
The second column base hardware is
A bolt insertion hole through which the anchor bolt is inserted, and a second lower base plate placed on the upper surface of the foundation;
A second web plate having a lower end joined to the upper surface side of the second lower base plate;
The flat plate or the wooden bearing wall is placed on the upper surface, and a through hole for a tensile force receiving member is provided on the upper surface. A second upper base plate;
A compression force receiving member provided perpendicularly to the second web plate between the second upper base plate and the second lower base plate;
The lower end of the second upper base plate is directly or indirectly joined to the upper surface of the second lower base plate and protrudes from the second upper base plate. In the part, a tensile force receiving member formed with a pin insertion hole into which a drift pin for fixing to a flat column or a wooden bearing wall is inserted;
The second rib plate provided between the first upper base plate and the first lower base plate and on the opposite side of the compressive force receiving member and orthogonal to the first web plate;
The pin insertion hole formed in the tensile force receiving member is formed in a long hole shape extending in the longitudinal direction of the tensile force receiving member. In the lower end surface of the flat column or wooden bearing wall fixed to the foundation by the column base of the flat column or wooden bearing wall according to claim 7,
A recess is formed by notching the lower end of the flat column or the wooden bearing wall above the junction between the second upper plate of the second column base metal and the second web plate and the second rib plate. The center mounting portion and the left and right end side mounting portions of the central mounting portion are provided, and the tensile force protruding from the through holes for the tensile force receiving members on the left and right sides of the upper base plate A recess for inserting a tensile force receiving member into which the receiving member is inserted is formed,
On the side of the flat column or wooden bearing wall,
A flat column or a wooden bearing wall, wherein a pin insertion hole is formed at a position corresponding to the pin insertion hole of the tensile force receiving member of the second column base metal.

Images