JPH094052A - Joint structure for column capital and column base, column base footing joint structure, and unit building - Google Patents

Abstract

PURPOSE: To make it possible to transmit a horizontal force more positively and safely without depending on shearing strength or bending strength of a bolt or a connecting pin or the like. CONSTITUTION: A downward fit-ion projected part 82a of a joint plate 8A is fitted in an upward fit-in recessed part 1a of a lower story column capital 13 while an upward fit-in projected part 83b of the joint plate 8A is fitted in a downward recessed part 32a of an upper story column base 32 in a projecting state respectively. Therefore, horizontal loads, such as wind load generated on an upper story column 3 are transmitted to a lower story column 3 surely and safely in the order of (the downward fit-in recessed part 32a) → the joint plate 8A (the upward fit-in projected part 83b → a support plate 81 → the downward fit-in projected part 82a) → lower story column copital 31 (the upward fit-in recessed part 31a).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between stilts for connecting upper and lower stigmas of a building to a stigma of a lower floor, and a column base indirect connection for connecting a column base and a foundation of a building. It relates to composite structures and unit buildings incorporating these joint structures.

[0002]

2. Description of the Related Art Conventionally, when a pillar of a building such as a house is placed and fixed on a foundation, the upper portion of the foundation and the pillar pedestal are fastened directly with anchor bolts and nuts ( See, for example, JP-A-62-17239). Similarly, when placing and fixing the upper-floor pillar on the lower-floor pillar of a building such as a house, directly connect the lower-floor stigma and the upper-floor pedestal with high-strength bolts or connecting pins. (See, for example, JP-A-3-158537). Bolts, connecting pins, etc. used as fixtures at such joints can generate vertical forces such as suction force due to the blowing of wind, horizontal forces such as shearing force, bending, etc. generated on the upper floors on the lower floors and foundations. Has a role of transmitting to.

[0003]

By the way, since bolts and connecting pins of this kind are made of steel having a large tensile strength, when only a function of transmitting a vertical force (suction force) is required. , The diameter can be reduced. However, since steel has relatively small bending strength and shearing strength as compared with tensile strength, it also has the function of transmitting horizontal force such as shearing force and bending to bolts and connecting pins as in the past. If required, there is a problem that the diameter cannot be reduced.
For this reason, when joining wooden columns and columns with the help of some kind of joining aid, using bolts or connecting pins, etc., between the stigmas and pedestals, use bolts or connecting pins with a large diameter. Although it must be done, the cross-section loss of the wooden pillar becomes large accordingly, and the strength of the pillar is remarkably reduced. As a result, the wood-like column may be broken at the location of the cross-section defect.
On the other hand, even when using steel-framed columns, with the spread of three-story houses, etc., from the viewpoint of strengthening the seismic structure, the conventional joint structure that relies only on the shear strength and bending strength of thick bolts and connecting pins. Is required to be reviewed.

The present invention has been made in view of the above-mentioned circumstances, and is a joint between stigmas and column bases capable of transmitting horizontal force more safely and surely without relying only on shear strength and bending strength of bolts and connecting pins. It is an object of the present invention to provide a structure and a connection structure between column bases, and a unit building incorporating these connection structures.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is directed to an upper floor pillar base which is a lower end portion of an upper floor pillar and a lower floor capital head which is an upper end portion of a lower floor pillar. A stigma between the stigmas and the pedestal, which is formed by butt-joining the butt joints with each other, wherein the lower floor stigmas are provided with upward fitting recesses with the fitting openings facing upward, while the upper floor pedestals are fitted with the fitting openings downward. And a horizontal force transmitting metal fitting for transmitting a horizontal force is interposed between the lower stigma and the upper pedestal, and the horizontal force transmitting metal fitting is placed downward. The same horizontal force transmitting hardware has a downward fitting convex portion protruding upward, an upward fitting convex portion protruding upward, and a fixture insertion hole penetrating these downward and upward fitting convex portions. Fit the downward fitting convex part of the lower fitting on the upper fitting concave part of the lower stigma above, and The fitting convex portion is fitted into the downward fitting concave portion of the upper pedestal pillar in a protruding state, and the fixing tool is inserted into the fixing tool insertion hole of the horizontal force transmitting hardware, and the fixing tool is used to make the same horizontal level. It is characterized in that the upward fitting recess of the lower stigma and the downward fitting recess of the upper pedestal are joined together via a force transmitting hardware.

Further, the invention according to claim 2 is such that each upper floor pillar base in the upper floor pillar gathering portion where a plurality of upper floor pillars gather and each lower floor pillar head in the lower floor pillar gathering portion where a plurality of lower floor pillars gather. And a stigma between the stilts, which are joined in a butt state, in which an upward fitting recess with the fitting opening facing upward is provided in each of the lower floor stigmas, while the fitting opening is provided in each of the upper floor pedestals. Is provided downwardly, and a horizontal force transmitting hardware for transmitting a horizontal force is inserted between each of the lower stigmas and each of the upper pedestals, and the horizontal force transmitting hardware is provided. Is a substrate portion, a plurality of downward fitting convex portions provided on a lower surface of the substrate portion and protruding downward corresponding to the upward fitting concave portions of the lower stigmas, and an upper surface of the substrate portion. And a plurality of upward fitting convex portions protruding upward corresponding to the downward fitting concave portions of each of the upper floor pillar bases, And a plurality of fixture insertion holes penetrating the downward and upward fitting convex portions, respectively, and the downward fitting convex portions of the same horizontal force transmitting hardware are inserted into the upward fitting concave portions of the corresponding lower floor stigmas. In addition, each of the upward fitting convex portions of the horizontal force transmitting metal fitting is fitted into the corresponding downward fitting concave portion of the upper floor column base in a protruding state, and each horizontal force transmitting metal fitting is fixed. A fixture is inserted through the tool insertion hole, and the fixture engages the upward fitting recesses of the lower stigmas with the downward fitting recesses of the upper pedestals through the same horizontal force transmitting hardware. Is characterized by.

According to a third aspect of the present invention, there is provided a stigma-columnar joint structure according to the first or second aspect, wherein the fixture is a male joint piece to a female joint piece with a predetermined insertion load. When the male joint piece is pushed in, the male joint piece is locked to the female joint piece, and both joint pieces move to a joined state, wherein the male joint piece is the lower stigma (or the upper floor). Is mounted and fixed in an upward fitting recess (or a downward fitting recess) provided in a column base), and the female joint piece is a downward fitting recess provided in the upper column base (or a lower stage stigma). Alternatively, it is mounted and fixed in an upward fitting recess).

The invention according to claim 4 is the connection structure between stigma and column bases according to claim 1 or 2, wherein the lower stigma is an upper end portion of a hollow lower stilt pillar with a lid, The upward fitting recess is formed by fixing the upper lid by immersing and fixing the upper lid in the column hollow of a predetermined size from the upper end surface of the lower floor pillar, and in the upper lid, the fixture insertion hole and the shaft of the horizontal force transmitting hardware. An upper lid bolt insertion hole having a common core is bored, the upper floor pillar pedestal is a lower end portion of a hollow upper floor pillar with a lid, and the downward fitting concave portion is formed by the lower lid and the upper floor. The lower lid has a lower-end bolt insertion hole having a common axis with the fixture insertion hole of the horizontal force-transmitting metal object, while being fixed by being immersed in the column hollow of a predetermined size from the lower end surface of the pillar. Bolts are inserted into the upper lid bolt insertion hole, the lower lid bolt insertion hole, and the fixture insertion hole, In the bolt and nut through the horizontal force transmission hardware it is characterized in that the under floor stigma and the upper floor pillar leg above is formed by bonding.

According to a fifth aspect of the present invention, the upper-floor building unit that constitutes the upper-floor portion of the unit building is placed and assembled on top of the lower-floor building unit that constitutes the lower-floor portion of the unit building. Which is a unit building, which is the lower end of the upper floor pillar incorporated in the upper floor building unit, and
The upper stigma, which is the upper end portion of the lower floor pillar incorporated in the corresponding lower floor building unit, is joined in the form of the stigma-column connection structure according to claim 1, 2, 3 or 4. I am trying.

Further, the invention according to claim 6 is a joint structure between column bases, in which the column base, which is the lower end portion of the column, is made to project onto the upper part of the foundation and the column and the foundation are joined. The upper part of the foundation is provided with an upward fitting recess with the fitting port facing upward, and the anchor bolt is projected upward from the bottom surface of the upward fitting recess, while the fitting port is provided downward in the column base. And a first anchor bolt insertion hole is formed in the upper surface of the downward fitting concave portion, and between the upper portion of the foundation and the column base, from the upper portion of the foundation. A horizontal force transmitting metal member for transmitting a horizontal force from the column base to the upper part of the foundation is inserted into the column base, and the horizontal force transmitting metal unit is a downward fitting convex portion projecting downward and upward. The upward fitting protrusions that project toward and the downward and upward fitting protrusions And a second anchor bolt insertion hole, and the downward fitting convex portion of the horizontal force transmitting hardware is fitted into the upward fitting concave portion of the upper portion of the foundation in a protruding state, and the horizontal force transmitting hardware is The upward fitting convex portion is fitted into the downward fitting concave portion of the column base in a protruding state, and the second anchor bolt insertion hole of the same horizontal force transmitting metal fitting and the first anchor bolt of the downward fitting concave portion. The anchor bolt is inserted into the insertion hole, and the anchor bolt is used to join the upper part of the foundation and the downward fitting recess of the column base through the same horizontal force transmitting hardware.

According to a seventh aspect of the present invention, each of the column bases in the column collecting portion in which a plurality of columns are gathered is made to abut on the upper part of the foundation, and the plurality of columns are joined to the foundation. A structure for joining between bases of column bases, wherein each column base is provided with a downward fitting recess with a fitting port facing downward, and a first anchor bolt insertion hole is formed in the upper surface of each downward fitting recess. , On the upper part of the foundation, corresponding to each of the downward fitting recesses, a plurality of upward fitting recesses with the fitting openings facing upward are provided, and the anchor bolt is projected upward from the bottom surface of each upward fitting recess, And, between the upper part of the foundation and the plurality of column bases, horizontal force transmitting hardware for transmitting horizontal force from the upper part of the foundation to each column base and from each of the column bases to the upper part of the foundation is inserted. The horizontal force transmitting hardware is provided on the base plate and the lower surface of the base plate. A plurality of downward fitting convex portions protruding downward corresponding to the upward fitting convex portions of the upper part of the foundation, and downward fitting concave portions of the column bases provided on the upper surface of the base plate portion. Corresponding to the plurality of upward fitting protrusions protruding upward, and a plurality of second anchor bolt insertion holes penetrating the corresponding downward and upward fitting protrusions,
The downward fitting convex portions of the same horizontal force transmitting metal fitting are fitted in the corresponding upward fitting concave portions of the upper part of the foundation in a protruding state, and the upward fitting convex portions of the same horizontal force transmitting metal fitting correspond to each other. It is fitted in the downward fitting recess of the column base in a protruding state, and
Anchor bolts are inserted through the second anchor bolt insertion holes of the same horizontal force transmission hardware and the first anchor bolt insertion holes of each of the downward fitting recesses described above, and the anchor bolts are inserted by the respective anchor bolts through the same horizontal force transmission hardware. It is characterized in that the upper part of the foundation is joined to the downward fitting concave portion of each of the column bases.

The invention according to claim 8 is a unit building in which a building unit constituting a part of a unit building is installed and fixed on an upper part of a foundation, and is a lower end portion of a pillar incorporated in the building unit. It is characterized in that the column base and the foundation are joined in the form of the column base foundation joint structure according to claim 6 or 7.

[0013]

In the structure of the present invention, the downward fitting convex portion of the horizontal force transmitting hardware is fitted into the upward fitting concave portion of the lower stigma in a protruding state, and the upward fitting convex portion of the horizontal force transmitting hardware is also provided. Is fitted into the downward fitting recess of the upper pedestal in a protruding state. Then, while maintaining this fitted state, a fixing tool is inserted into the fixing tool insertion hole of the same horizontal force transmitting metal fitting, and by the fixing tool, the lower floor stigma and the upper floor pedestal are connected via the same horizontal force transmitting hardware. Are joined. According to the configuration of the present invention, the downward fitting concave portion of the upper column base and the upward fitting convex portion of the horizontal force transmitting hardware engage with each other against the action of horizontal force such as shearing force or bending. Have a relationship. Similarly, the upward fitting concave portion of the lower stigma and the downward fitting convex portion of the horizontal force transmitting hardware are in a relationship of engaging with each other against the action of horizontal force. Therefore, the upper-floor column and the lower-floor column are in a relationship of engaging with each other via the horizontal force transmitting hardware with respect to the horizontal force. Therefore, the horizontal load such as wind load generated on the upper floor pillar is the upper floor column base (downward fitting concave portion) → horizontal force transfer hardware (upward fitting convex portion → downward fitting convex portion 8) → lower floor capital head. It is reliably and safely transmitted to the lower floor pillars in the order of (upward fitting recess).

Further, if a plurality of downward fitting convex portions and upward fitting convex portions are provided on the base plate portion as in the horizontal force transmitting hardware according to the second aspect of the present invention, the multi-pillar head poly-pillars arranged close to each other are provided. Can join legs together. At this time, not only between the stigmas and the pedestals but also between the stigmas and the pedestals are joined to each other by the substrate part, so not only the horizontal force is transmitted between the upper and lower columns, but also between the columns on the same floor. Transfer power. That is, the horizontal force generated in any one or a plurality of upper floor pillars or lower floor pillars can be dispersed and transmitted to the remaining upper floor pillars and lower floor pillars, so that the structure can be further strengthened.

The structure of the present invention can be suitably applied not only to the connection between the stigma and the column base, but also to the connection between the column bases. Also,
The present invention is also useful as a joint structure between an upper floor building unit and a lower floor building unit in a unit building. In this case, if the engaging type fixing tool is used as the fixing tool, the on-site construction can be speeded up and the on-site construction man-hour can be reduced.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. ◇ First Embodiment FIG. 1 is a perspective view showing the overall structure of a unit building incorporating a stigma-column-base connection structure and a column-base connection structure, which is the first embodiment of the present invention, and FIG. 2 is the same unit. It is a perspective view showing a frame structure of a building unit which constitutes a building. First, the overall configuration of the unit building of this example will be briefly described with reference to FIG. In order to increase the industrial production rate of a building, a unit building is a building of a type in which one building is divided into several units in advance to be factory-produced, and these are constructed / assembled at a construction site. As shown in FIG. 1, the unit building of this example relates to a three-story house, and the assembling is firstly a first-floor building that constitutes the first-floor part of the house above the foundations 1, 1, ... Units 2A, 2A, ...
Installed and connected to each other, then each installed 1
The second-floor building units 2B, 2B, ..., which form the second-floor portion of the house, are installed and connected to each other on top of the second-floor building units 2A, 2A ,. , ..., the third-floor building units 2C, 2C, ... constituting the third-floor portion of the house are installed and connected to each other, and then the respective third-floor building units 2 installed
A roof unit or roof panel (not shown) is installed on the upper part of C, 2C, ... And these roof units or roof panels are connected to each other. The first-floor building unit 2A, the second-floor building unit 2B, and the third-floor building unit 2C
Since all have substantially the same configuration, hereinafter, when these are collectively referred to, they are simply referred to as building units 2.

The building unit 2 of this example relates to a steel frame type rigid frame structure, and as shown in FIG. 2, the columns 3, 3, ... Of the covered rectangular steel pipes arranged at the four corners, the columns 3 and 3. Groove steel ceiling girders 4, 4, ... and floor girders 5, 5, ... connecting the upper and lower ends
And the floor panel of ALC plate (cellular concrete plate) 6.
6 ..., and a plurality of ceiling girders 7, 7, ... Interposed between the ceiling girders 4, 4 facing each other on the girder side constitute a box-shaped skeleton of a transportable size. In addition, a wall panel (not shown) and a ceiling surface material are attached by using a fixture such as a bolt or a tapping screw.

Next, with reference to FIG. 3 to FIG. 11, a stigma-column-base connection structure and a column-base connection structure in the unit building of this example will be described. The connection between the stigma and the column base in this example is used to fix the upper-floor building unit to the upper part of the lower-floor building unit.
It is used to fix the first-floor building unit 2A to the upper part of the foundation 1. The upper floor building unit is the second floor building unit 2B for the first floor building unit 2A, the third floor building unit 2C for the second floor building unit 2B, and the lower floor building unit is the first floor for the second floor building unit 2B. The building unit 2A is a second-floor building unit 2B with respect to the third-floor building unit 2C.

Connection structure between one stigma and one column base FIG. 3 is a sectional view showing a connection structure between one stigma and one column base in the unit building of this example, and FIG. It is an exploded perspective view which shows a construction procedure, and as shown in these figures, in the lower stigma 31, the upper lid 311 of the thick steel plate is located at a position where the upper lid 311 of the thick steel plate is recessed into the pipe by a predetermined dimension from the upper end surface of the steel pipe column 3. It has been fixed in advance by arc welding in the factory, whereby the upward fitting concave portion 31a for fitting the downward fitting convex plate portion 82a of the joining plate 8A described later is formed with the fitting port facing upward. ing. An upper lid bolt insertion hole 312 is formed in the center of the upper lid 311, and an upper lid bolt insertion hole 31 is formed on the lower surface of the upper lid 311.
A back nut 91 having the same axis as that of No. 2 is previously welded at the factory. On the other hand, the lower lid 321 of the thick steel plate is fixed to the upper floor column base 32 by arc welding at the factory in advance at a position where the lower lid 321 of the thick steel plate is recessed into the pipe by a predetermined dimension from the lower end face of the steel pipe column 3. A downward fitting concave portion 32b for fitting an upward fitting convex plate portion 83b, which will be described later, with the fitting opening facing downward is formed. A lower lid bolt insertion hole 322 having a common axis with the upper lid bolt insertion hole 312 is formed in the center of the lower lid 321. Between the lower stigma 31 and the upper pedestal 32, the upper and lower columns 3,3
A joint plate (also referred to as a horizontal force transmission plate) 8A for one stigma and one pedestal for transmitting a horizontal force to each other is inserted.

This joint plate 8A for one stigma and one pedestal
Is fixed to the support plate portion 81 by welding to the lower surface of the support plate portion 81, and is fixed to the upper surface of the support plate portion 81 by welding, and the downward fitting convex plate portion 82a protruding downward.
An upward fitting convex plate portion 83b protruding upward, a downward fitting convex plate portion 82a and an upward fitting convex plate portion 83b.
And a bolt insertion hole 84 penetrating therethrough, and the area / shape of the support plate portion 81 is substantially equal to the outer peripheral area / shape of the cross section of the pillar 3,
On the other hand, the downward fitting convex plate portion 82a and the upward fitting convex plate portion 8
The area and shape of 3b are set substantially equal to the inner peripheral area and shape of the cross section of the pillar 3, and the thickness of the downward fitting convex plate portion 82a and the upward fitting convex plate portion 83b is the same as the upward fitting concave portion 31a.
And the depth of the downward fitting recess 32b is set to be substantially equal. Therefore, the downward fitting convex plate portion 82a of the joining plate 8A is provided in the upward fitting concave portion 31a of the lower stigma 31,
The upward fitting convex plate portion 83b of the joining plate 8A is fitted in the downward fitting concave portion 32b of the upper floor column base 32 in a protruding state, and the upper lid bolt insertion hole 312 and the lower lid bolt insertion hole 322 are formed. A double-screw bolt 92 made of high-tensile steel is inserted into the bolt insertion hole 84 of the joining plate 8A, and the double-screw bolt 92 is inserted into the back nut 91 and the nut 93.
Tighten with and through the joint plate 8A, the lower stigma 3
1 and the upper floor column base 32 are joined.

In order to realize a one-to-one-column-to-one-column connection structure in a unit building, as shown in FIG. 5, first, in the upward fitting concave portion 31a of the lower-floor stake 31 of the lower-floor building unit which has been completely installed. Both screw bolts 92 are mounted so as to project upward. The mounting is performed by screwing the lower end thread portion of the both screw bolts 92 into the back nut 91 from the front surface side of the upper lid 311 via the upper lid bolt insertion hole 312. Next, in the joint plate 8A of this example, first, the both screw bolts 92 are inserted into the bolt insertion holes 84 of the joint plate 8A, and then the downward fitting convex plate portion 82a of the joint plate 8A is attached to the lower stigma 31. It is fitted into the upward fitting concave portion 31a and is attached to the lower stigma 31. The joining plate 8A thus attached to the stigmas 31 of the lower floor is the supporting plate portion 8
The peripheral end edge of No. 1 comes into contact with the upper end surface flesh of the lower stigma 31, and the upward fitting convex plate portion 83b projects upward from the upper end surface of the lower stigma 31. Next, the upper-floor building unit is hoisted by a crane to align the upper-floor column base 32 of the unit corner with the corresponding lower-floor stigma 31, and then the lower lid of the downward fitting recess 32b (lower lid 321) is first set. Both screw bolts 92 projecting upward from the lower stigma 31 are inserted into the bolt insertion holes 322 and guided into the upper pedestal 3, and then the downward fitting recess 32b is formed on the joining plate 8A.
To the upper fitting convex plate portion 83b, and the upper floor column base 32
Buttocks the lower stigma 31. After that, a rod-shaped bolt tightening tool 94 was put into the pillar through a tool insertion hole (not shown) provided on the upper end surface (upper lid) of the upper floor pillar 3, and was held at the tip of this bolt tightening tool 94. By applying the nut 93 to the tip of the upper end screw part of the screw bolts 92 inserted in the upper pillar 3, and rotating the bolt tightening tool 94, the nut 93 held by the bolt tightening tool 94 is removed. Screw bolt 9
It is screwed to the upper end screw part of 2. As a result, the back nut 91
The screw bolts 92 are tightened from above and below by the nut 93 and the nut 93, and the upper floor column base 32 and the lower floor column head 31 are joined.
In this way, the upper-floor building unit is placed and fixed on the upper part of the corresponding lower-floor building unit.

According to the above-mentioned one-to-one-column-to-one-column connection structure, the downward fitting concave portion 32b of the upper floor column base 32 and the connection plate 8A.
The upward fitting convex plate portion 83b is in a relationship of engaging with each other against the action of horizontal force such as shearing force or bending. Similarly, the upward fitting concave portion 31a of the lower stigma 31 and the downward fitting convex plate portion 82a of the joining plate 8A are in a relationship of engaging with each other against the action of horizontal force.
Therefore, the upper floor pillar 3 and the lower floor pillar 3 are in a relationship of engaging with each other with respect to a horizontal force via the joint plate 8A. Therefore, the horizontal load such as the wind load generated on the upper floor pillar 3 is not affected by the upper floor pillar base 32 (the downward fitting concave portion 32).
b)-> joining plate 8A (upward fitting convex plate portion 83b-> supporting plate portion 81-downward fitting convex plate portion 82a) -lower floor stigma 31
It is reliably and safely transmitted to the lower floor pillar 3 in the order of (upward fitting recess 31a). Since the double screw bolt 92 is made of steel having high tensile strength, the function of transmitting the vertical force between the stigmas and column bases is not impaired even if the diameter of the shaft portion is reduced.

1-column base foundation joint structure FIG. 4 is a cross-sectional view showing the 1-column base foundation joint structure in the unit building of this example, and FIG. 6 shows the construction procedure of the same 1-column base foundation joint structure. FIG. 3 is an exploded perspective view showing the first-floor building unit 2 in this example as shown in these drawings.
The connection between the column base 32 of the A column 3 and the concrete foundation 1 is also performed via the joint plate 8A having the same configuration as that in FIG. On the upper surface of the foundation 1 of this example, at a location where the columns 3, 3, ... Of the first-floor building units 2A, 2A ,. Steel plate upward fitting concave plates 33c, 33c, ...
Are arranged. Each upward fitting concave plate 33c is
A rectangular bottom plate portion 331 and four side plate portions 332 that are bent from the respective edge portions of the bottom plate portion 331 and stand upright at the same height.
, 332, ..., The upper end surface of each side plate portion 332 is aligned with the upper surface of the foundation 1, and the bottom plate portion 331 is exposed upward, and is embedded in concrete. An anchor bolt insertion hole 333 is formed in the center of each bottom plate portion 331, and the anchor bolt 95 is inserted therethrough. The anchor bolt 95 is embedded in the concrete of the foundation 1 with its upper half protruding upward while being inserted into the anchor bolt insertion hole 333. On the other hand, each column base 32 in the first-floor building unit 2A is provided with a downward fitting concave portion 32b having a size capable of fitting with the upward fitting convex plate portion 83b of the joining plate 8A. The downward fitting concave portion 32b has substantially the same configuration as that of the upper floor column base (FIGS. 3 and 5), and therefore, the same reference numerals are given and the description thereof will be omitted. The construction procedure of this one-column-base-base connection structure is substantially the same as that of the one-pillar-one-column-base connection structure described above, and therefore the description thereof is also omitted.

According to the above-mentioned connection structure between the one-column bases, the downward fitting concave portion 3 of the column base 32 in the first-floor building unit 2A.
2b and the upward fitting convex plate portion 83b of the joining plate 8A are in a relationship of engaging with each other against the action of horizontal force. Similarly, the upward fitting concave plate 33 of the foundation 1
c and the downward fitting convex plate portion 82a of the joining plate 8A,
They are in a relationship of engaging with each other against the action of horizontal force. Therefore, the pillar 3 and the foundation 1 of the first-floor building unit 2A are subjected to horizontal force via the joint plate 8A,
They are in a relationship of engaging with each other. Therefore, the horizontal load generated in the first-floor building unit 2A is the column base 32 (downward fitting concave portion 32b) → the joining plate 8A (upward fitting convex plate portion 83b → support plate portion 81 → downward fitting convex plate portion 82).
a) → The base 1 (upward fitting concave plate 33c) is securely transmitted to the base 1 in this order.

Four-storied head-to-four-column connection structure FIG. 7 is a sectional view showing the four-to-four-head-to-four-column connection structure in the unit building of this example, and FIG. It is an exploded perspective view showing a construction procedure. As shown in these drawings, in this example, the upper floor pillars 3, 3,
Each upper-floor column base 3 in the upper-floor column gathering section 3B in which four ...
2 and lower floor pillar assembly section 3A where four lower floor pillars 3, 3, ...
In the case of joining the lower stigmas 31 of the above in a state of abutting each other, four joining plates 8A (FIG. 3) are inserted between the lower gathering section 3A and the upper gathering section 3B. Instead, a single joining plate 8B having a size (spread) of four joining plates 8A is inserted.

Joining plate 8B for the four stigmas and four pedestals
Are four downward fitting convex plate portions 82a, 82a, ...
The upward fitting convex plate portions 83b, 83b, ... And the upper and lower surfaces of one support plate portion 85 (having an area equivalent to the cross-sectional area of the four stigmas and four pedestals) correspond to the arrangement of the four stigmas and four pedestals. Then, they are arranged in two rows and two columns and fixed by welding. The joining plate 8B has a corresponding downward fitting convex plate portion 82.
bolt insertion hole 8 penetrating a and the upward fitting convex plate portion 83b
Four holes 4, 84, ... Are provided. In the joining plate 8B having the above-described configuration, each downward fitting convex plate portion 82a is in the upward fitting concave portion 31a of the corresponding lower floor stigma 31, and each upward fitting convex plate portion 83b is in the corresponding upper floor pillar pedestal 32. The upper lid bolt insertion holes 312, 31 are fitted in the downward fitting recessed portions 32b in a protruding state, respectively.
, ..., the lower lid bolt insertion holes 322, 322, ... and the bolt insertion holes 84, 84, ... are inserted with both screw bolts 92, 92, ... made of high tensile steel, and these both screw bolts 92 are inserted. ... and nuts 93, 93, ...
Tighten with, and 4 stigmas 3 through the joint plate 8B
, And the four pillar legs 32, 32, ... Are joined.

According to the above-described four-column / four-column connection structure, since the support plate portion 85 connects not only the stigmas, but also the stigmas and the pedestals, the horizontal between the upper and lower columns. Not only the forces are transmitted, but also the horizontal forces are transmitted between columns on the same floor. That is, the horizontal force generated in any one or a plurality of upper floor pillars 3 or lower floor pillars 3 is applied to the remaining upper floor pillars 3 and lower floor pillars 3
Since it can be dispersed and transmitted to the structure, the structure can be further strengthened.

Joint structure between four- column bases FIG. 8 is a sectional view showing a joint structure between four-column bases applied to the unit building of this example, and FIG. 10 is a sectional view showing the joint structure between four-column bases. It is an exploded perspective view which shows a construction procedure, and as shown in these drawings, in this example, each column base 32 of the column collecting portion 3C in which four columns 3 of the first-floor building unit 2A gather.
The connection between the concrete foundation 1 and the concrete foundation 1 is also performed through the joint plate 8B having the same configuration as that in FIG. According to this joint structure between four column bases, the support plate portion 85 joins the column bases not only between the column bases, but not only the horizontal force is transmitted between the column bases. Horizontal forces are transmitted between the pillars on the first floor. That is, the horizontal force generated in any one of the pillars 3 can be dispersed and transmitted to the remaining pillars 3 and the foundation 1, so that the structure can be further strengthened.

Second Embodiment FIG. 13 is a perspective view showing the overall construction of a unit building incorporating a stigma-column-base connection structure according to a second embodiment of the present invention, and FIGS. 14 and 15 show the unit building. FIG. 16 is a cross-sectional view showing the construction procedure of the stigma-to-post connection structure, and FIG. 16 is a cross-sectional view showing the stigma-to-post connection structure. The unit building in this example relates to a wooden three-story house,
Building units 2D on each floor that make up this unit building,
2E and 2F are, as shown in FIG. 13, 3 of the floor panel 60.
Mainly a wooden wall type structure in which wall panels 70, 70, ... Stand upright along one side edge, and at the four corners, lumber or engineering wood (accumulated Wood pillars 300, 300, ... Are incorporated.

Next, with reference to FIG. 14 to FIG. 16, a connection structure between stigmas and column bases in the unit building of this example will be described. In this example, the connection between the stigmas and the pedestal of the upper-floor building unit and the lower-floor building unit is replaced with the above-mentioned double-screw bolts (FIG. 3), and the engagement type fixture 4 as shown in FIG. 16 is used.
00 is used. This engagement type fixture 400 is composed of a male joint piece 410 and a female joint piece 420. When the male joint piece 410 is pushed into the female joint piece 420 with a predetermined insertion load, both joint pieces 410, 420 are separated. It is a joining mechanism. Speaking in order from the tip side, the male joint piece 410 has a tapered head portion 411 and a concave step portion (locked portion) 4.
12, the pin portion 413, and the male screw portion 414 are roughly configured and mounted and fixed to the lower stigma 331 at the construction site. On the other hand, the female joint piece 420 includes a bifurcated locking member 421 made of spring steel and a male screw portion 422 for fixing the locking member 421, and is attached to the upper floor column base 332 in advance at the factory. Fixed.

The lower stigma 331 has an upper lid 5 made of steel plate.
A sill metal 510 including 11 and a square tube portion 512 is covered from the factory stage. This stigma 510 has a function of being fixed to the lower stigma 331 by a fixture 513 to reinforce the lower stigma 331 of wood, and also has a joining plate 8C (having substantially the same configuration as the joining plate 8A (FIG. 3)). It has an upward fitting recess 510a for fitting, and a back nut 514 for screwing the male joint piece 410 on the back surface of the upward fitting recess 510a (the back surface of the upper lid 511).
Are fixed by welding. Upward fitting recess 510a
Is formed by immersing the upper lid 511 into the rectangular tube portion 512 by a predetermined size. The upper lid 511 has an insertion hole (not shown) for inserting the male screw portion 414 of the male joint piece 410 into the back nut 514. And the shaft center are common.

The upper floor column base 332 has a steel plate lower lid 611.
A pedestal metal fitting 610 composed of a square tube portion 612 and a square tube portion 612 is covered from the factory stage. This column base metal fitting 610 is a fixture 61.
In addition to having a function of being fixed to the upper floor column base 332 by 3 to reinforce the wooden upper floor column base 332, it has a downward fitting concave portion 610b for fitting the joint plate 8C, and a downward fitting concave portion 610b of the downward fitting concave portion 610b. On the back side, a mounting portion 614 for screwing and storing the female joint piece 420 from the factory stage.
Is provided. The downward fitting recess 610b is provided on the lower lid 6
11 is formed by immersing the rectangular tube portion 612 in a predetermined dimension.

In order to realize the one-to-one-column-to-one-column connection structure in the unit building of this example, first, as shown in FIGS. 14 and 15, first, the lower-floor stake 331 of the lower-floor building unit whose installation has been completed is installed. On the back nut 514 of the stigma 510,
The male joint piece 410 previously inserted through the joining plate 8C is screwed. At the same time as this screwing operation, the downward fitting convex plate portion 82c of the joining plate 8C is fitted into the upward fitting concave portion 510a. Next, the upper-floor building unit is lifted up by a crane, and the upper-floor building unit is lowered onto the upper part of the lower-floor building unit with the upper-floor column base 332 of the unit corner aligned with the corresponding lower-floor stigma 331. go. By this hanging operation, the taper-shaped head portion 411 of the male joint piece 410 has a bifurcated locking member 421 of the female joint piece 420 with a desired insertion load.
Press. Thereby, the female joint piece 420
The locking member 421 is expanded and the tapered leading end 411 of the male joint piece 410 is pushed into the locking member 421. And the male joint piece 41
When 0 is pushed into the concave step portion 412, the locking member 421 is closed again, and both joint pieces 410, 4
20 is joined. In this way, the upper-floor building unit is placed and fixed on the upper part of the corresponding lower-floor building unit.

According to the connection structure between stigmas and pedestals of this example, the downward fitting concave portion 610b of the upper floor column base 332 and the upward fitting convex plate portion 83c of the joining plate 8C are subjected to horizontal force such as shearing force or bending. To the action of the lower stigma 3
The upward fitting concave portion 331a of 31 and the downward fitting convex plate portion 82c of the joining plate 8C are locked to each other against the action of horizontal force. Therefore, upper pillar 300 and lower pillar 3
00 has a relationship of being locked to each other with respect to a horizontal force via the joint plate 8C. therefore,
A horizontal load such as a wind load generated on the upper-floor column 300 is applied to the upper-floor column base 332 (downward fitting recess 610b) → the joining plate 8
C (upward fitting convex plate portion 83c → supporting plate portion 81c → downward fitting convex plate portion 82c) → lower floor stigma 331 (upward fitting concave portion 510a) is transmitted securely and safely to the lower floor pillar 300. In addition, the pin 413 of the male joint piece 410
Is made of steel with high tensile strength, so even if the diameter of the shaft is reduced, the function of transmitting the vertical force between the stigmas and pedestals is not impaired. In addition, since the engaging type fixing device is used as the fixing device, the load of the joining work is significantly reduced.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like that do not depart from the gist of the present invention. Is also included in the present invention. For example, in the above-described embodiment, the case where the joint plate has the support plate portion has been described, but in the case of the joint plate 8A for one stigma and one column base, the support plate portion 81c may be omitted. Further, in the above-described embodiment, the joining plates 8A and 4 for one stigma and one pedestal are used.
Although the joint plate 8B for the stigma and the four pedestals has been described, the joint plate 8C for the two stigmas and the two pedestals and the joint plate 8 for the three stigmas and three pedestals are not limited thereto.
D is also possible. Further, the upward fitting convex plate portion (downward fitting convex plate portion) that constitutes the joining plate is not limited to a rectangular shape, and if a notch is appropriately provided as shown in FIG. 12, the upper lid 311 ( Weld bead M formed when the lower lid 321) is fixed in the hollow of the stigma (column base) by arc welding.
Can be avoided. For example, in the joint plate 8E shown in FIG. 7A, the upward fitting convex plate portion 83c (downward fitting convex plate portion) is provided in order to avoid the welding beads M formed at the four corners of the upper lid 311 (lower lid 321). Notches are provided in the four corners of the. Further, in the joining plate 8F shown in FIG. 7B, the upward fitting convex plate portion 83d (downward fitting convex plate portion) is provided in order to avoid the welding bead M formed on the side portion of the upper lid 311 (lower lid 321). Is provided with a notch on the side. Further, in the above-described second embodiment, only the connection between one stigma and one pedestal is described, but it goes without saying that the invention can also be applied to the connection between multiple stigmas and multiple pedestals.

[0036]

As described above, according to the configuration of the present invention, the downward fitting concave portion of the upper column base and the upward fitting convex portion of the horizontal force transmitting hardware are subjected to horizontal force such as shearing force or bending. , The upper fitting recesses of the lower stigmas and the lower fitting projections of the horizontal force-transmitting hardware are locked to each other in response to the action of horizontal force. Therefore, in the end, the upper floor pillar and the lower floor pillar are in a relationship of engaging with each other via the horizontal force transmitting hardware with respect to the horizontal force. Therefore, the horizontal load such as wind load generated on the upper floor pillar is applied to the upper floor column base (downward fitting concave portion) → upward fitting convex portion → downward fitting convex portion 8 → lower floor capital (upward fitting concave portion). Will be transmitted to the pillars on the lower floor in the order of. Since the double screw bolt 92 is made of steel having high tensile strength, the function of transmitting the vertical force between the stigmas and column bases is not impaired even if the diameter of the shaft portion is reduced.

Further, as in the horizontal force transmitting hardware according to the second aspect of the present invention, if the substrate portion is provided with a plurality of downward fitting convex portions and upward fitting convex portions, the multi-pillar head poly-pillars arranged close to each other. Can join legs together. At this time, not only between the stigmas and the pedestals but also between the stigmas and the pedestals are joined to each other by the substrate part, so not only the horizontal force is transmitted between the upper and lower columns, but also between the columns on the same floor. Transfer power. That is, the horizontal force generated in any one or a plurality of upper floor pillars or lower floor pillars can be dispersed and transmitted to the remaining upper floor pillars and lower floor pillars, so that the structure can be further strengthened.

The structure of the present invention can be suitably applied not only to the connection between the stigma and the column base, but also to the connection between the column bases. Also,
The present invention is also useful as a joint structure between an upper floor building unit and a lower floor building unit in a unit building. In this case, if the engaging type fixing tool is used as the fixing tool, the on-site construction can be speeded up and the on-site construction man-hour can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a unit building incorporating a stigma-column-base connection structure and a column-base connection structure according to the first embodiment of the present invention.

FIG. 2 is a perspective view showing a skeleton structure of a building unit constituting the unit building.

FIG. 3 is a cross-sectional view showing a connection structure between one stigma and one pedestal applied to the unit building.

FIG. 4 is a cross-sectional view showing a joint structure between one column bases applied to the unit building.

FIG. 5 is an exploded perspective view showing a construction procedure of the joint structure of one stigma and one pedestal.

FIG. 6 is an exploded perspective view showing a construction procedure of the first column base joint structure.

FIG. 7 is a cross-sectional view showing a joint structure between four stigmas and four pedestals applied to the unit building.

FIG. 8 is a cross-sectional view showing a joint structure between four column bases applied to the unit building.

FIG. 9 is an exploded perspective view showing a construction procedure of the joint structure of four stigmas and four pedestals.

FIG. 10 is an exploded perspective view showing a construction procedure of the joint structure between the four column bases.

FIG. 11 (a) is a perspective view showing a structure of a joint plate used in a two-story head / two-column base joint structure and a two-column base foundation joint structure applied to the same unit building; and FIG.
[Fig. 3] is a perspective view showing a configuration of a joint plate used for a three-pillar three-column base connection structure and a three-column base foundation connection structure applied to the same unit building.

FIG. 12 is a perspective view showing a configuration of a joining plate according to a modified example of the same embodiment.

FIG. 13 is a perspective view showing an overall configuration of a unit building that incorporates a stigma-columnar connection structure according to a second embodiment of the present invention.

FIG. 14 is a cross-sectional view showing a construction procedure of a stigma-columnar joint structure adopted in the same unit building.

FIG. 15 is a cross-sectional view showing a construction procedure of a stigma-column-base connection structure adopted in the same unit building.

FIG. 16 is a cross-sectional view showing a joint structure between stigmas and pedestals.

[Explanation of symbols]

1 Foundation 2 Building unit (lower floor building unit, upper floor building unit) 2A, 2D 1st floor building unit (lower floor building unit) 2B, 2E 2nd floor building unit (upper and lower floor building unit) 2C, 2F 3rd floor building unit ( Upper building unit) 3,300 columns, lower columns, upper columns 3B Upper column aggregates 3A Lower column aggregates 3C Column aggregates 31,331 Lower stigma 32 Upper column pedestals, column bases 31a, 510a Upward fitting recess 32b, 610a Downward fitting recess 33c Upward fitting recess plate (upward fitting recess) 311, 511 Upper lid 321, 611 Lower lid 312 Upper lid bolt insertion hole 322 Lower lid bolt insertion hole (First anchor bolt insertion Hole) 8A, 8B, 8C Joining plate (horizontal force transmitting hardware) 81, 85, 81c Support plate part (substrate part) 82a, 82c Downward fitting convex plate part (bottom) Fitting convex portion) 83b, 83c Upward fitting convex plate portion (upward fitting convex portion) 84 Bolt insertion hole (fixing tool insertion hole, second anchor bolt insertion hole) 91 Back nut (nut, fixing tool) 92 Double screw bolt (fixing tool) 93 Nut (fixing tool) 95 Anchor bolt 410 Male joint piece 420 Female joint piece 400 Engagement-type fixing tool

Claims (8)

[Claims] 1. A connection structure between stigmas and column bases, which is formed by joining upper column pedestals, which are the lower ends of upper columns, and lower column stigmas, which are the upper ends of lower columns, in a butted state. The lower floor stigma is provided with an upward fitting recess with the fitting opening facing upward, while the upper floor pedestal is provided with a downward fitting recess with the fitting opening facing downward, and the lower stigma and the upper floor. A horizontal force transmitting metal member for transmitting a horizontal force is inserted between the column base and the horizontal force transmitting metal member, and the horizontal force transmitting metal member has a downward fitting convex portion protruding downward and an upward protruding portion protruding upward. It has a fitting convex part and a fixture insertion hole that penetrates these downward and upward fitting convex parts, and the downward fitting convex part of the same horizontal force transmitting hardware is inserted into the upward fitting concave part of the lower stigma. While fitting with, the upward fitting convex portion of the same horizontal force transmitting hardware is fitted into the downward fitting concave portion of the upper floor column base in a protruding state, One is to insert a fixing tool into a fixing tool insertion hole of the same horizontal force transmitting metal fitting, and by the fixing tool, an upward fitting concave portion of a lower stigma and an downward fitting concave portion of an upper tier pillar base via the same horizontal force transmitting metal fitting. A joint structure between stigmas and pedestals, which is characterized by joining and. 2. The upper-stage pillar bases in the upper-stage pillar gathering section in which a plurality of upper-floor pillars gather and the lower-stage stigmas in the lower-level pillar gathering section in which a plurality of lower-floor pillars gather are joined in a butt state. In the joint structure between stigmas and pedestals, each of the lower stigmas is provided with an upward fitting recess with the fitting opening facing upward, while each of the upper floor pedestals is fitted downward with the fitting opening facing downward. A concave portion is provided, and a horizontal force transmitting metal member for transmitting a horizontal force is interposed between each lower stigma and each upper pedestal, and the horizontal force transmitting metal member includes a substrate portion and a substrate. A plurality of downward fitting protrusions that are provided on the lower surface of the base and project downwards corresponding to the upward fitting recesses of the lower floor stigmas, and the upper floors of the upper floor A plurality of upward fitting convex portions protruding upward corresponding to the downward fitting concave portions of the column base;
It has a plurality of fixture insertion holes penetrating through the corresponding downward and upward fitting convex portions, and each downward fitting convex portion of the same horizontal force transmitting hardware is inserted into the upward fitting concave portion of the corresponding lower floor stake. While fitting in the state, the respective upward fitting convex portions of the horizontal force transmitting hardware are fitted in the downward fitting concave portions of the corresponding upper floor pillar bases in a protruding state, and A fixing tool is inserted through the fixing tool insertion hole, and the upward fitting recess of each of the lower floor stigmas and the downward fitting recess of each of the upper floor pedestals are joined by the fixing tool through the same horizontal force transmitting hardware. A joint structure between stigmas and pedestals, which is characterized in that 3. The fixing device, when the male joint piece is pushed into the female joint piece with a predetermined insertion load,
An engagement type fixture in which a male joint piece is locked to a female joint piece so that both joint pieces move to a joined state, wherein the male joint piece is attached to the lower stigma (or the upper pedestal). The female joint piece is fixedly mounted in the upward fitting recess (or the downward fitting recess) provided, and the female joint piece is provided in the downward fitting recess (or the upward fitting) provided in the upper column pedestal (or the lower stigma). The connection structure between stigmas and pedestals according to claim 1 or 2, wherein the stigma is connected to and fixed to a dent (). 4. The lower floor stigma is the upper end of a hollow lower floor pillar with a lid, and the upper fitting recess is such that the upper lid is recessed into the column hollow of a predetermined size than the upper end surface of the lower floor pillar. In addition, the upper lid is formed with an upper lid bolt insertion hole having a common axis with the fixture insertion hole of the horizontal force transmission hardware, and the upper column base is a hollow with a lid. The lower end of the upper floor of
The downward fitting recess is formed such that the lower lid is fixed by being inserted into the hollow of a column having a predetermined size from the lower end surface of the upper floor pillar, and the fixture for inserting the horizontal force transmitting metal article is inserted into the lower lid. A lower lid bolt insertion hole having a common axis with the hole is formed, and a bolt is inserted into the upper lid bolt insertion hole, the lower lid bolt insertion hole, and the fixture insertion hole, and the bolt and the nut. 3. The connection structure between stigma and column bases according to claim 1 or 2, wherein the lower stigma and the upper pedestal are joined via the horizontal force transmitting hardware. 5. A unit building in which an upper-floor building unit that constitutes an upper-floor portion of a unit building is placed and assembled on an upper portion of a lower-floor building unit that constitutes a lower-floor portion of the unit building. Claims 1, 2 and 3, in which an upper-floor column base, which is a lower end of an upper-floor column incorporated in a story building unit, and an upper-stage capital, which is an upper end of a lower-floor column incorporated in a corresponding lower-floor building unit. A unit building characterized by being joined in the form of a stigma-column connection structure as described in 3 or 4. 6. A column base inter-base joining structure in which a column base, which is a lower end portion of a column, is joined to an upper portion of a foundation so that the column and the foundation are joined together. Is provided with an upward fitting concave portion with the fitting opening facing upward, and an anchor bolt is projected upward from the bottom surface of the upward fitting concave portion, while a downward fitting concave portion with the fitting opening facing downward is provided on the column base. At the same time, a first anchor bolt insertion hole is formed in the upper surface of the downward fitting recess,
And, a horizontal force transmitting metal member for transmitting a horizontal force is interposed between the upper part of the foundation and the column base, and the horizontal force transmitting metal member has a downward fitting convex portion protruding downward. An upward fitting convex portion protruding upward and a second anchor bolt insertion hole penetrating the downward and upward fitting convex portions are provided, and the downward fitting convex portion of the horizontal force transmitting hardware is It fits into the upward fitting recess of the upper part of the foundation in a protruding state, and the upward fitting convex portion of the same horizontal force-transmitting hardware is fitted into the downward fitting concave portion of the column base in a protruding state, and is also horizontal. The anchor bolt is inserted into the second anchor bolt insertion hole of the force transmission hardware and the first anchor bolt insertion hole of the downward fitting recess, and the upper portion of the foundation is inserted by the anchor bolt through the horizontal force transmission hardware. And a downward fitting recess of the column base are joined together. Joint structure between pillar bases. 7. A column base inter-base connection structure in which a plurality of column bases in a column gathering portion where a plurality of columns are gathered are abutted against an upper portion of a foundation to join the plurality of columns to the foundation. While providing a downward fitting concave portion with the fitting opening facing downward in each of the column bases, and forming a first anchor bolt insertion hole in the upper surface of each downward fitting concave portion, while the first anchor bolt insertion hole is formed in the upper portion of the foundation, Corresponding to each downward fitting recess, a plurality of upward fitting recesses with the fitting ports facing upward are provided, and an anchor bolt is projected upward from the bottom surface of each upward fitting recess, and the upper part of the foundation and a plurality of A horizontal force transmitting hardware for transmitting a horizontal force between the column base, the horizontal force transmitting hardware being provided on the base plate and the lower surface of the base plate, and each of the upward facing parts of the base. Multiple downward fittings that project downwards corresponding to the fitting projections Section, a plurality of upward fitting convex portions provided on the upper surface of the base plate portion and protruding upward corresponding to the downward fitting concave portions of the respective column bases, and corresponding downward and upward fitting convex portions. And a plurality of second anchor bolt insertion holes each penetrating through, and each downward fitting convex portion of the same horizontal force transmitting metal fitting is fitted into a corresponding upward fitting concave portion of the upper portion of the foundation in a protruding state. , Each of the upward fitting convex portions of the same horizontal force transmitting metal fitting is fitted into the downward fitting concave portion of the corresponding column base in a protruding state, and
Anchor bolts are inserted through the second anchor bolt insertion holes of the same horizontal force transmission hardware and the first anchor bolt insertion holes of each of the downward fitting recesses, and the anchor bolts are inserted by the respective anchor bolts through the same horizontal force transmission hardware. A connection structure between column bases, characterized in that the upper part of the foundation and the downward fitting recesses of the respective column bases are joined. 8. A unit building in which a building unit constituting a part of a unit building is installed and fixed on an upper portion of a foundation, and a column base, which is a lower end portion of a column incorporated in the building unit, and a foundation are claimed. Item 6. A unit building characterized by being joined in the form of a column base foundation joint structure according to item 6 or 7.