JP6342850B2 - Column base joint structure - Google Patents

Description

  The present invention relates to a column base joint structure, and in particular, a column base having a square cross section is joined to a horizontal member having a floor panel laid on the upper surface, and the column is erected from the upper surface of the horizontal member. It is related with the column base part junction structure for making it do.

  For example, in a building such as a wooden house building, a hole-down hardware is used as a column base joint structure for fixing the column in an upright state from horizontal members such as foundations and beams that constitute the framework structure of the building. It is known that a leg joint hardware such as a hole down hardware is disposed on the side surface of the column leg in a state of projecting outward from the side surface. Therefore, for example, there is a problem that it becomes a hindrance when attaching a misalignment, or it becomes a thermal bridge, so as a joint structure to replace this, for example, a column base metal fitting that connects a column and an anchor bolt is used. A column base joint structure has been developed that is embedded in a leg or a base (see, for example, Patent Document 1).

  In the column base part joining structure of Patent Document 1, the column base metal fitting is embedded in the base, and a cylindrical base embedded part tightly coupled to the anchor bolt and a columnar engaging part protrude below the bottom part. The base part embedded in the leg part of the pillar is formed as a separate body, and after the base is installed on the upper surface of the foundation, the engaging part of the base part protruding from the bottom part of the pillar is embedded in the base In the state where the pillar is erected from the base by fitting into the part, the connecting hole formed in the engaging part of the horn part and the connecting hole formed in the base buried part are matched to connect these The anchor bolt and the column are tightly coupled by driving a locking pin such as a drift pin into the hole.

  Moreover, in the column base part joining structure of patent document 1, the hoso part which comprises a column base metal fitting and is embed | buried under the leg part of a column drives a locking pin, such as a drift pin, from the side of a column, Since it is fixed to the leg portion, a pin hole for driving a locking pin such as a drift pin or an end portion of the driven locking pin appears on the surface of the column. For this reason, for example, in a Japanese-style room, if the surface of the pillar is a true wall structure, the pin hole for driving a locking pin such as a drift pin or the end of the driven locking pin is Appearing on the side surface of the column is visibly damaged.

  On the other hand, a column base joint structure formed by using a fastening hardware fixed to a column base via a coach screw screwed upward from the bottom of the column (for example, has been developed) , See Patent Document 2).

Japanese Patent No. 3488870 JP 2011-132778 A

  However, in the column base part joining structure using the fastening hardware described in Patent Document 2, the fastening hardware is screwed into a locking hole formed in a plate attached along the bottom surface of the pillar, It is possible to fix to the leg from the bottom side of the column without damaging the appearance and design of the column by driving a drift pin etc. from the side of the column, but on the other hand, when fastening the column to the base In addition, since it is necessary to drive a locking pin such as a drift pin from the side of the foundation toward the lower shaft of the fastening hardware inserted into the fixing hole opened on the upper surface of the foundation, for example, a working scaffold is formed. Therefore, in the state where the floor panel is temporarily laid on the top surface of the foundation, the temporarily laid floor panel gets in the way, and the locking pin is driven from the side of the foundation to perform the work of tightening the pillar to the foundation. It becomes difficult.

  In addition, when joining the end face of another base or beam, or the end face of a large draw, etc. to the side face or end face of a horizontal member such as a base or a beam in the part where the column is erected, using joint hardware Because it is difficult to attach the joint hardware to the horizontal member in advance in a pre-cut factory because of the relationship with the driving hole into which the locking pin such as the drift pin is driven, the floor panel is temporarily laid at the construction site. Prior to this, it becomes necessary to attach the joint hardware to the horizontal member, and it becomes difficult to efficiently perform the work of joining the end surfaces of other horizontal members such as a base and a beam.

  In the present invention, even when the floor panel is temporarily laid on the upper surface of the horizontal member, the column is attached from the upper surface of the horizontal member using the horizontal member or the column base hardware for fastening attached to the leg part of the column. It can be easily joined in an upright state, and even when joining the end face of another horizontal member to the side face or end face of the horizontal member in the part where the column stands, An object of the present invention is to provide a column base joint structure that can be performed well.

  The present invention is a column base joint structure for joining a column leg having a square cross-sectional shape to a horizontal member having a floor panel laid on the upper surface, and for erecting the column from the upper surface of the horizontal member. And in the notch part formed in the site | part by which the said pillar of the said floor panel erects, the horizontal member side embed | buried under the said horizontal member by rotating the said column with respect to the said horizontal member By engaging a column-side column base bracket attached to the lower end surface of the column with the column base bracket, the leg portion of the column is joined to the upper surface of the horizontal member, The material side column base has a cylindrical portion whose upper end is open to the upper surface of the horizontal member, and the cylindrical portion includes an axial notch cut in the axial direction from the opening edge, An L-shaped engagement cut made of a circumferential notch that is bent in the circumferential direction from the axial notch. The column side column base is provided integrally with a base part that contacts the opening edge of the cylindrical portion of the horizontal member side column base, and below the base part, An upper guide disk portion having an outer diameter similar to the inner diameter of the cylindrical portion of the horizontal member side column base metal and having a height similar to the height of the axial notch to the circumferential notch And a width similar to the width of the axial notch of the engagement notch provided integrally below the upper guide disk portion and the same length as the length of the circumferential notch An intermediate engagement portion having an engagement protrusion having a width and protruding from the outer peripheral surface of the upper guide disk portion by the thickness of the cylindrical portion, and integrally provided below the intermediate engagement portion And a lower guide disk portion having an outer diameter similar to the inner diameter of the cylindrical portion of the horizontal member side column base metal. And after the engaging convex portion of the intermediate engaging portion of the column side column base metal is dropped along the axial notch portion of the engagement notch of the horizontal member side column base metal The column which joins the leg part of the column to the upper surface of the horizontal member by rotating the column and engaging the engagement convex part with the circumferential notch of the engagement notch The above object is achieved by providing a leg joint structure.

  In the column base part joining structure of the present invention, a pair of the L-shaped engagement notches are provided at positions opposed to the radial direction of the cylindrical part of the horizontal member side column base metal, It is preferable that a pair of the engaging convex portions of the engaging portion is provided at positions facing the upper guide disc portion and the lower guide disc portion in the radial direction of the column side column base metal.

  Further, in the column base part joint structure of the present invention, a base part storage recess is formed on the lower end surface of the column, and the column side column base metal fitting has the base part stored in the base part storage recess. And it is preferable that it is attached to the lower end surface of the said pillar.

  Furthermore, the column base part joint structure of the present invention is configured such that the engagement convex part of the intermediate engagement part of the column side column base metal is connected to the axial notch of the engagement notch of the horizontal member side column base metal. After dropping along the notch, by rotating the column at an angle of less than 45 degrees, by engaging with the circumferential notch, any one of the columns having a square cross-sectional shape The engaging protrusions and the engaging notches are provided in a positional relationship in which the legs of the column are joined to the upper surface of the horizontal member so that the directions of the opposing sides are along the axial direction of the horizontal member. It is preferable that

  According to the column base joint structure of the present invention, even when the floor panel is temporarily laid on the upper surface of the horizontal member, the column base metal fitting for fastening is attached to the horizontal member or the column leg. Can be easily joined in a state of being erected from the upper surface of the horizontal member, and the end surface of another horizontal member is joined to the side surface or end surface of the horizontal member in the portion where the column is erected However, the joining operation can be performed efficiently.

(A)-(c) is a partial see-through | perspective schematic perspective view explaining the column base part junction structure which concerns on preferable one Embodiment of this invention. FIG. 2 is a partial perspective schematic cross-sectional view taken along the line BB in FIG. It is the schematic sectional drawing which looked at Fig.1 (a) from the A direction. It is a partial perspective schematic perspective view showing a horizontal member-side column base hardware embedded in the horizontal member and a column-side column base hardware attached to the lower end surface of the column, with a floor panel omitted. (A)-(c) is a perspective view explaining the condition which engages the engagement convex part of a column side column base metal with the engagement notch of a horizontal member side column base metal. The column side joint hardware will be described. (A) is a top view, (b) is a side view, (c) is a bottom view, and (d) is a side view of (b) seen from the left side.

  As shown in FIGS. 1A to 1C, a column base joint structure 10 according to a preferred embodiment of the present invention is a horizontal structure that forms a framework structure of a building in, for example, a wooden residential building. The column 11 is employed as a structure for fixing the column 11 to the beam 21 in a state where the column 11 is erected from the upper surface 21 a of the beam as the material 21. In the column base part joint structure 10 of the present embodiment, a column side column base 12 attached to the lower end surface 11a of the column 11 is attached to a horizontal member side column base 22 embedded in a beam 21 which is a horizontal member. The legs 11b of the pillar 11 can be easily joined to the upper surface 21a of the beam 21 by engaging the floor panels 30a, 30b temporarily laid by a stable and simple work. Moreover, in the column base part joint structure 10 of this embodiment, it is not necessary to drive a fixing pin such as a drift pin into the side surface of the beam 21 that is a horizontal member at the construction site. Even when the end surfaces of other horizontal members are joined to the side surfaces and the end surfaces of the base member 21, joint hardware (not shown) for joining these end surfaces can be attached in advance at a precut factory or the like. It is like that.

  And the column base part junction structure 10 of this embodiment is a leg of the column 11 provided with the square cross-sectional shape in the beam 21 by which the floor panel 30a was laid by the upper surface, as shown to Fig.1 (a)-(c). It is a joint structure for joining the part 11b and standing up the pillar 11 from the upper surface 21a of the beam 21, and is a notch part formed in the part where the pillar 11 of the floor panel (upper floor panel) 30a stands up. In FIG. 31, by rotating the column 11 with respect to the beam 21, the column side column base 12 attached to the lower end surface 11 a of the column 11 is engaged with the horizontal member side column base 22 embedded in the beam 21. By joining, the leg part 11b of the pillar 11 is joined to the upper surface 21a of the horizontal member 21.

  As shown in FIG. 4 and FIGS. 5A to 5C, the horizontal member side column base 22 includes a cylindrical portion 22 a having an upper end opened to the upper surface 21 a of the beam 21, and this cylindrical portion. 22a consists of an axial cutout 23a cut in the axial direction from the opening edge and a circumferential cutout 23b cut in the circumferential cut from the axial cutout 23a. An L-shaped engagement notch 23 is formed. The column-side column base 12 is a base 12a that contacts the opening edge of the cylindrical portion 22a of the horizontal member 22 and a horizontal member side integrally provided below the base 12a. An upper guide disk portion 12b having an outer diameter similar to the inner diameter of the cylindrical portion 22a of the column base 22 and having a height similar to the height h to the circumferential notch 23b of the axial notch 23a; The horizontal guide b12 has a horizontal width b1 similar to the horizontal width b1 of the axial cutout portion 23a of the engagement cutout 23 provided integrally below the upper guide disk portion 12b, and is similar to the vertical width b2 of the circumferential cutout portion 23b. An intermediate engagement portion 12c having an engagement convex portion 12d that protrudes from the outer peripheral surface of the upper guide disk portion 12b by the thickness of the cylindrical portion 22a, and a lower portion of the intermediate engagement portion 12c. A cylindrical shape of the horizontal member side column base 22 provided integrally with It is formed and a lower guide disc portion 12e having the same outer diameter and the inner diameter of the minute 22a.

  After the engaging convex portion 12d of the intermediate engaging portion 12c of the column side column base metal 12 is dropped along the axial notch 23a of the engagement notch 23 of the horizontal member side column base metal 22 (FIG. 5 ( b), see FIG. 1B), and by engaging the engaging projection 12d with the circumferential cutout 23b of the engagement cutout 23 by rotating the column 11 (FIG. 5C), In FIG. 1C, the leg portion 11 b of the column 11 is joined to the upper surface 21 a of the beam 21.

  In the present embodiment, a pair of L-shaped engagement notches 23 are provided at positions facing the radial direction of the cylindrical portion 22a of the horizontal member side column base 22 (FIGS. 4 and 5). a), and a pair of engaging convex portions 12d of the intermediate engaging portion 12c are provided at positions opposed to the radial direction of the upper guide disc portion 12b and the lower guide disc portion 12e of the column side column base 12 (see FIG. (Refer FIG.6 (b)-(d)).

  In this embodiment, as shown in FIGS. 1A to 1C and FIG. 3, the beam that is the horizontal member 21 is made of a wooden square member having a cross-sectional shape of 105 mm × 105 mm, for example. An auxiliary panel receiving member 32 made of, for example, a wooden square member having a cross-sectional shape of 60 mm × 45 mm is attached to one side surface of the beam 21 across the portion where the pillar 11 is erected, and the upper surface 32 a is beamed. It is attached in a state of being flush with the upper surface 21a of 21. Further, a panel receiving member 33 made of a wooden square member attached to the other side surface of the beam 21 and having a cross-sectional shape of 60 mm × 45 mm, for example, is arranged at a position where the upper surface 33 a is lowered by one step from the upper surface 21 a of the beam 21. Attached, in state.

  In the present embodiment, the upper floor panel 30a and the lower floor panel 30b are laid with the side edges supported by the beams 21. The upper floor panel 30a is made of a known panel member having a thickness of about 24 mm, for example, and the side edge extends to the center line in the width direction of the upper surface 21a of the beam 21 as shown in FIG. It is attached. A rectangular notch 31 extends to the upper surface 32a of the auxiliary panel receiving member 32 at the side edge of the upper floor panel 30a that is arranged so as to overlap with the attachment portion of the column 11 on the upper surface 21a of the beam 21. In this way, a notch is formed. The notch 31 has a long side portion along the axial direction of the beam 21 having a length smaller than the diagonal length of the square cross-sectional shape of the column 11, for example, about 148 mm, and the axial direction of the beam 21. The short side portion along the vertical direction is cut out so as to be a rectangular shape having a length smaller than ½ of the diagonal of the square cross-sectional shape of the pillar 11, for example, about 74 mm. .

  The lower floor panel 30b is made of a known panel member having a thickness of, for example, about 24 mm, like the upper floor panel 30a. The lower floor panel 30b is disposed at a position one step below the upper surface 21a of the beam 21 and is attached to the other side surface of the beam 21 with the side edge portion being placed on the upper surface 33a of the panel receiving member 33. It is attached. Accordingly, in the present embodiment, the lower floor panel 30b is laid at a height position that is one step lower than the upper floor panel 30a.

  And in this embodiment, it is a part where the notch part 31 of the upper floor panel 30a is arrange | positioned in the upper surface 21a of the beam 21, It is a metal horizontal member side column base preferably in the site | part in which the pillar 11 stands. The metal piece 22 is embedded and fixed in a state where the upper end of the cylindrical portion 22a is opened to the upper surface 21a of the beam 21. In the present embodiment, as shown in FIGS. 4 and 5A to 5C, the entire horizontal member side column base 22 has a thickness of, for example, about 3.2 mm, and 27. The cylindrical portion 22a has an inner diameter of about 6 mm. Moreover, the horizontal member side column base metal 22 has a length of about 90 mm, for example. The horizontal member side column base 22 is fitted in a fixing hole (not shown) having an inner diameter similar to the outer diameter of the cylindrical portion 22a, which is formed by drilling vertically downward from the upper surface 21a of the beam 21. At the same time, for example, a drift pin 34 (see FIG. 4) is driven through a driving hole (not shown) formed in the side surface of the beam 21 toward the through hole 22b formed in the peripheral surface. Etc., the opening edge at the upper end of the cylindrical portion 22a is embedded and fixed in advance in the beam 21 in a state where the opening edge portion is disposed flush with the upper surface 21a of the beam 21. The horizontal member side column base 22 has a long side portion of the notch 31 formed on the upper floor panel 30a with the central axis of the cylindrical portion 22a on the center line in the width direction of the upper surface 21a of the beam 21. It is buried and fixed in a state where it is arranged at the center of the opening side.

  In the present embodiment, a pair of L-shaped engagement notches 23 are provided on the horizontal member side column base metal 22 so as to be disposed at positions opposed to the radial direction of the cylindrical portion 22a. Each engagement notch 23 includes an axial notch 23a having a lateral width b1 of, for example, about 9 mm, which is cut downward in the axial direction from the opening edge of the upper end of the cylindrical portion 22a. It is formed including a circumferential notch 23b having a longitudinal width b2 of, for example, about 12 mm, which is bent in the circumferential direction from the lower half of the notch 23a. The axial notch 23a is formed such that the height h from the opening edge of the upper end of the cylindrical portion 22a to the circumferential notch 23b is, for example, about 14 mm. The circumferential notch 23b is 45 degrees after dropping an engaging convex portion 12d of an intermediate engaging portion 12c of a column side column base 12 to be described later along the axial notch 23a of the engaging notch 23. For example, the column 11 is formed so as to extend in the circumferential direction so that the column 11 can be rotated at an angle of 30 degrees.

  In this embodiment, as shown in FIGS. 1A to 1C, the pillar 11 is made of, for example, a wooden square member having a size of 105 mm × 105 mm. The outer periphery of the base part 12a is large enough to accommodate the base part 12a of the column-side column base metal 12 to be described later in the central part of the lower end surface 11a of the leg part 11b, which is the lower end part of the column 11. A base portion storage recess (not shown) having an inner peripheral shape similar to the shape is formed. In this embodiment, the column-side column base metal 12 is formed so that the base portion 12a, preferably the bottom surface of the base portion 12a is flush with the lower end surface of the leg portion 33a of the column 33, in the base portion receiving recess. It is attached to the lower end surface 11a of the column 11 in a state where it faces the lower end surface.

  The column-side column base metal 12 is preferably a metal hardware used by being attached to the lower end surface 11a of the column 11, and is shown in FIGS. 5 (a) to 5 (c) and FIGS. 6 (a) to 6 (c). As described above, the intermediate engaging portion including the base portion 12a, the upper guide disk portion 12b provided integrally below the base portion 12a, and the engaging convex portion 12d provided integrally below the upper guide disk portion 12b. 12c and a lower guide disk portion 12e provided integrally below the intermediate engagement portion 12c.

  In the present embodiment, the base portion 12a is a disk-shaped portion having a diameter of, for example, about 52 mm and a thickness of, for example, about 9 mm. A long screw (a countersunk wood screw) as a fixing member 14 is preferably screwed into the base portion 12a on both sides in the radial direction across the center portion from the lower surface side toward the lower end surface 11a of the column 11 (FIG. 1). (See (a) to (c)), a pair of fastening holes 13 are formed through. In the fastening hole 13, a tapered hole 13 a (see FIG. 6B) for storing the head of the long screw 14 on the lower surface side of the base portion 12 a without protruding from the lower surface of the base portion 12 a. Is formed. In a state where the base portion 12a is stored in the base portion storage recess formed in the lower end surface 11a of the column 11, the long screw 14 is screwed toward the lower end surface 11a of the column 11 through the fastening hole 13, By fastening the head of the screw 14 to the lower surface of the base portion 12a, the column-side column base 12 can be attached to the lower end surface 11a of the column 11 in a strong and stable state.

  The upper guide disk portion 12b is a portion having a disk shape that is disposed concentrically with the base portion 12a and is integrally provided below the base portion 12a. The upper guide disk portion 12b has an outer diameter, for example, about 27.2 mm, which is smaller than the diameter of the base portion 12a, similar to the inner diameter of the cylindrical portion 22a of the horizontal member side column base 22. Further, the upper guide disk portion 12b is substantially the same as the height h (for example, about 14 mm) of the axial cutout portion 23a of the engagement cutout 23 formed in the horizontal member side column base metal 22 to the circumferential cutout 23b. For example, the height (thickness) is about 15 mm.

  The intermediate engagement portion 12c is a portion having an elongated rectangular parallelepiped shape that is disposed so as to extend in the diameter direction of the upper guide disk portion 12b and is integrally provided below the upper guide disk portion 12b. . The intermediate engagement portion 12c has a lateral width similar to the lateral width b1 of the axial cutout portion 23a of the engagement cutout 23, for example, a lateral width of about 9 mm, and the circumferential cutout except for the portion of the engagement convex portion 12d. As a vertical width substantially the same as the vertical width b2 (for example, about 12 mm) of the portion 23b, a rectangular cross-sectional shape having a vertical width of, for example, about 12 mm is provided. Further, the intermediate engaging portion 12c has a length of, for example, about 33 mm, which is obtained by adding twice the thickness of the cylindrical portion 22a of the horizontal column side column base metal 22 to the length of the diameter of the upper guide disc portion 12b. It is formed to have. Accordingly, the end portions on both sides of the intermediate engagement portion 12c have a lateral width of about 9 mm, for example, similar to the lateral width b1 of the axial notch portion 23a of the engagement notch 23, and the circumferential notch portion 23b. It is substantially the same as the vertical width b2 or slightly smaller than the vertical width b2, for example, about 10 mm, and the thickness of the cylindrical portion 22a is, for example, 2 than the outer peripheral surface of the upper guide disk portion 12b. A pair of engaging convex portions 12d protruding outward by about 9 mm are provided at positions facing the radial directions of the upper guide disc portion 12b and the lower guide disc portion 12e. The outer peripheral surface of the engagement convex portion 12d is a curved surface that is curved with the same radius of curvature as the outer peripheral surface of the cylindrical portion 22a of the horizontal member side column base metal 22.

  The lower guide disc portion 12e is a portion having a disc shape that is disposed concentrically with the base portion 12a and the upper guide disc portion 12b and is provided integrally below the intermediate engagement portion 12c. The lower guide disk portion 12e has an outer diameter of about 27.2 mm, for example, similar to the inner diameter of the cylindrical portion 22a of the horizontal member side column base 22 and has a height (thickness of about 10 mm), for example. )have. The outer peripheral corner portion of the lower end portion of the lower guide disk portion 12e is chamfered into a tapered shape, whereby the column-side column base metal 12 is changed to the horizontal member side column base metal 22 and the upper end of the cylindrical portion 22a is opened. It is easy to insert through.

  The upper guide disc portion 12b and the lower guide disc portion 12e, which are provided above and below the intermediate engagement portion 12c, have outer diameters similar to the inner diameter of the cylindrical portion 22a of the horizontal member side column base metal member 22a. As a result, the engagement protrusion 12d of the intermediate engagement portion 12c is more stable along the L-shaped engagement notch 23 including the axial notch 23a and the circumferential notch 23b. It is possible to move in the state.

  And in this embodiment, as shown to Fig.1 (a)-(c), in the notch part 31 formed in the site | part in which the pillar 11 of the floor panel (upper floor panel) 30a stands, The engaging convex portion 12d of the intermediate engaging portion 12c of the column side column base 12 attached to the lower end surface 11a is embedded in the horizontal member 21 while being stabilized by the upper guide disc portion 12b and the lower guide disc portion 12e. The horizontal member embedded in the beam 21 by rotating the column 11 with respect to the beam 21 after being dropped along the axial notch 23a of the engagement notch 23 of the horizontal member 22 By engaging the column side column base 12 attached to the lower end surface 11 a of the column 11 with the side column base 22, the leg 11 b of the column 11 is temporarily laid on the upper surface 21 a of the horizontal member 21. Stable floor panels 30a and 30b The easy Do work, so that can be easily joined.

  Here, in the present embodiment, as described above, the circumferential cutout portion 23b of the engagement cutout 23 of the horizontal member side column base metal 22 is engaged with the intermediate engagement portion 12c of the column side column base metal 12. After dropping the convex portion 12d along the axial cutout portion 23a of the engagement cutout 23, the column 11 can be rotated at an angle of less than 45 degrees, for example, at an angle of 30 degrees. It is formed extending in the direction. Further, the engagement convex portion 12d of the column-side column base metal 12 and the engagement notch 23 of the horizontal member-side column base metal 22 are connected to the engagement convex portion 12d of the column-side column base metal 12 and the horizontal member-side column base. After dropping along the axial cutout portion 23a of the engagement cutout 23 of the metal piece 22, the pillar 11 is rotated at an angle of, for example, 30 degrees as an angle less than 45 degrees, so that the circumferential cutout portion 23b is rotated. By engaging, the leg 11b of the column 11 is made to be in the horizontal member 21 so that the direction of one of the opposing sides of the column 11 having a square cross-sectional shape is along the axial direction of the horizontal member 21. It is provided in a positional relationship to be joined to the upper surface.

  Thereby, in this embodiment, the notch part 31 formed in the part where the pillar 11 of the upper floor panel 30a is erected has the long side part along the axial direction of the beam 21 as described above. The length of the diagonal of the square cross section of the pillar 11 is shorter than the diagonal of the square of the square, for example, about 148 mm, and the short side along the direction perpendicular to the axial direction of the beam 21 A notch is formed so as to have a rectangular shape having a length smaller than ½, for example, about 74 mm, and the pillar 11 is formed inside the notch 31 so as to be smaller than 45 °, for example, 30 °. Even if it can only be rotated, the column 11 has a square cross-sectional shape by rotating the column 11 30 degrees so that the column-side column base 12 is reliably engaged with the horizontal member-side column base 22. Any one of 11 opposite sides Direction, so that along the axial direction of the horizontal members 21, it is possible to easily bond the leg 11b of the column 11 on the upper surface of the laterally placed material 21.

  This also prevents the notch 31 from becoming larger compared to the case where the notch is formed in the column 11 having a square cross-sectional shape so as to be rotated by 45 degrees or more, that is, 360 degrees. It becomes possible. Moreover, by this, compared with the case where a notch part is formed in the magnitude | size which can rotate 360 degree | times, the direction of the one side which the pillar 11 opposes follows the axial direction of the horizontal member 21. When the leg 11b of the column 11 is joined to the upper surface of the horizontal member 21, the width of the gap generated between the outer peripheral surface of the leg 11b of the column 11 and the inner peripheral edge of the notch 31 is kept small. Thus, it is possible to effectively reduce the labor for finishing the floor.

  The circumferential cutout portion 23b of the engagement notch 23 of the horizontal member side column base metal 22 is connected to the engagement convex portion 12d of the intermediate engagement portion 12c of the column side column base metal 12 and the axial cutout of the engagement cutout 23. After being dropped along the notch 23a, it is formed to extend in the circumferential direction so that the column 11 can be rotated at an angle of, for example, 20 to 40 degrees as an angle less than 45 degrees. Is preferred. Further, the engagement convex portion 12d of the column-side column base metal 12 and the engagement notch 23 of the horizontal member-side column base metal 22 are connected to the engagement convex portion 12d of the column-side column base metal 12 and the horizontal member-side column base. After dropping along the axial cutout portion 23a of the engagement cutout 23 of the metal piece 22, the circumferential cutout portion is obtained by rotating the column 11 at an angle of, for example, 20 to 40 degrees as an angle less than 45 degrees. By engaging with 23b, the leg 11b of the column 11 is placed on the horizontal member so that the direction of one of the opposing sides of the column 11 having a square cross-sectional shape is along the axial direction of the horizontal member 21. It is preferably provided in a positional relationship to be bonded to the upper surface of 21.

  And according to the column base part joining structure 10 of this embodiment provided with the above-mentioned structure, even when the floor panel 30a is temporarily laid on the upper surface of the horizontal member 21, the horizontal member 21 and the leg part 11b of the column 11 are attached. It is possible to easily join the column 11 in a state where the column 11 is erected from the upper surface 21a of the horizontal member 21 by using the attached column base metal members 22 and 12, and the column 11 is erected. Even when the end face of another horizontal member is joined to the side face or end face of the horizontal member 21 at the portion to be joined, the joining work can be performed efficiently.

  That is, according to the present embodiment, the horizontal member side column base metal 22 embedded in the upper surface 21a of the horizontal member 21 is formed with the L-shaped engagement notch 23 cut from the opening edge. The column side column base 12 having a cylindrical portion 22a and attached to the lower end surface 11a of the column 11 is sandwiched between the upper guide disc portion 12b and the lower guide disc portion 12e, and the cylindrical portion It has an intermediate engaging part 12c provided with an engaging convex part 12d that protrudes by the thickness of 22a, and the engaging convex part 12d of the column-side column base metal 12 is connected with the engagement cut-off of the horizontal member side column base metal 22 By dropping the column 11 with respect to the beam 21 after dropping along the axial notch 23 a of the notch 23, the column-side column base 12 is engaged with the horizontal member-side column base 22. The leg 11b of the column 11 can be joined to the upper surface 21a of the horizontal member 21. There.

  As a result, according to the present embodiment, it is not necessary to drive a fixing pin such as a drift pin into the side surface of the beam 21 which is a horizontal member at the construction site, so the floor panel 30a is temporarily laid on the upper surface of the horizontal member 21. Even in this state, the pillar 11 can be easily joined in a state of being erected from the upper surface 21a of the horizontal member 21, and the side and end surfaces of the horizontal member 21 of the part where the column 11 is erected Even when joining the end faces of other horizontal members, it becomes possible to attach joint hardware (not shown) for joining these end faces in advance in a precut factory or the like. The joining work can be efficiently performed at the construction site.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, a pair of L-shaped engagement notches and engagement protrusions of the intermediate engagement portion need to be provided at positions facing the horizontal direction of the horizontal member side column base and the column side column base. It is not always necessary, and only one place or three or more places can be provided at intervals in the circumferential direction. The column-side column base hardware does not necessarily need to be attached in a state in which the base portion is stored in the base portion storage recess formed on the lower end surface of the column, and may be attached to the flat lower end surface of the column. . The floor panel laid on the upper surface of the horizontal member does not necessarily have to be laid only on one side across the axial center line of the horizontal member, and is laid to cover the entire upper surface of the horizontal member. May be. The notch part formed in the site | part in which the pillar of a floor panel erects may be notched so that it may become a square, for example.

DESCRIPTION OF SYMBOLS 10 Column base part joining structure 11 Column 11a Lower end surface 11b Leg part 12 Column side column base metal part 12a Base part 12b Upper guide disk part 12c Intermediate engagement part 12d Engagement convex part 12e Lower guide disk part 13 Fastening hole 13a Seating part 14 Fixing member (long screw)
21 Horizontal material (beam)
21a Upper surface 22 Horizontal member side column base 22a Cylindrical portion 22b Through hole 23 Engagement notch 23a Axial notch 23b Circumferential notch 30a Upper floor panel 30b Lower floor panel 31 Notch 32 Auxiliary panel receiving material 33 Panel material 34 Drift pin

Claims (4)

It is a column base joint structure for joining a column leg having a square cross-sectional shape to a horizontal member with a floor panel laid on the upper surface, and for standing a column from the upper surface of the horizontal member,
A horizontal member side column base metal embedded in the horizontal member by rotating the column with respect to the horizontal member in a notch formed in a portion where the column of the floor panel is erected. In addition, by engaging a column side column base attached to the lower end surface of the column, the column leg is joined to the upper surface of the horizontal member,
The horizontal member side column base has a cylindrical portion whose upper end is open to the upper surface of the horizontal member, and the cylindrical portion has an axial notch cut in an axial direction from an opening edge. An L-shaped engagement notch is formed, which includes a portion and a circumferential notch that is bent in the circumferential direction from the axial notch,
The column-side column base is composed of a base part that contacts an opening edge of a cylindrical portion of the horizontal member-side column base metal, and the horizontal member-side column base provided integrally below the base part. An upper guide disk portion having an outer diameter similar to the inner diameter of the cylindrical portion of the hardware and having a height similar to the height of the axial notch portion to the circumferential notch portion, and the upper guide disk portion And a width similar to the width of the axial cutout portion of the engagement cutout, and a vertical width similar to the vertical width of the circumferential cutout, and An intermediate engagement portion having an engagement convex portion protruding from the outer peripheral surface of the upper guide disk portion by the thickness of the cylindrical portion, and the horizontal member side integrally provided below the intermediate engagement portion A lower guide disk portion having an outer diameter similar to the inner diameter of the cylindrical portion of the column base metal part,
After dropping the engaging convex part of the intermediate engaging part of the column side column base metal along the axial notch part of the engagement notch of the horizontal member side column base metal, A column base part joining structure that joins the leg part of the pillar to the upper surface of the horizontal member by engaging the engaging convex part with the circumferential notch part of the engaging notch by rotating. .   A pair of the L-shaped engagement notches are provided at positions facing the radial direction of the cylindrical portion of the horizontal member side column base metal, and the engagement convex portion of the intermediate engagement portion is The column base part joint structure according to claim 1, wherein a pair of column base part joint structures are provided at positions opposed to each other in a radial direction of the upper guide disk part and the lower guide disk part of the column side column base hardware.   A base portion storage recess is formed in the lower end surface of the column, and the column side column base metal is attached to the lower end surface of the column in a state where the base portion is stored in the base portion storage recess. The column base joint structure according to claim 1 or 2.   After dropping the engaging convex portion of the intermediate engaging portion of the column side column base metal fitting along the axial notch portion of the engagement notch of the horizontal member side column base metal plate, 45 degrees By rotating the column at an angle less than that and engaging with the circumferential cutout, the direction of one of the opposing sides of the column having a square cross-sectional shape is the horizontal member. The engagement convex part and the engagement notch are provided in a positional relationship in which the leg part of the column is joined to the upper surface of the horizontal member so as to be along the axial direction of the horizontal axis. Column base joint structure described in the item.

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