JP2003328446A - Connection structure of column and unit building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the diameter of a connection bolt small compared with a hanging bolt when screwing the hanging bolt to a lower post and connecting the upper and lower columns with the connection bolt. <P>SOLUTION: In a connection structure of a column 23, nuts 32, 33 forming upper and lower two stages are provided at the top of the lower column 23. The screw diameter of the upper nut 32 is made larger than the screw diameter of the lower nut 33 and the upper nut 32 is used for screwing with the hanging bolt 34 and the lower nut 33 is used for screwing with the connection bolt 35. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a column joint structure and a unit building.

[0002]

2. Description of the Related Art In a unit building in which upper and lower building units are joined, a nut is attached to the top of the pillar of the lower floor building unit when the bottom of the pillar of the upper floor building unit is connected to the top of the pillar of the lower floor building unit. And a connection bolt inserted into the bottom of the pillar of the upper-floor building unit is screwed to the nut (Patent 2775582).

[0003]

When transporting or installing a building unit, it is conceivable that the above-mentioned nut provided on the top of the pillar may also be used for screwing a lifting bolt.

At this time, the thread diameter of the hoisting bolt is large enough to withstand the heavy lifting of the building unit, and the thread diameter of the nut used for screwing the hoisting bolt is also large.

On the other hand, a small screw diameter is sufficient for the connecting bolt in terms of strength. However, when the nut for the above-mentioned lifting bolt is also used for screwing the connecting bolt, it is necessary to make the thread diameter of the connecting bolt the same as the thread diameter of the lifting bolt. Become. In such a case, the screw diameter of the connecting bolt becomes large, which causes a problem in the maneuverability and tightening workability of the connecting bolt that must be screwed inside the hollow column. U

An object of the present invention is to screw a hoisting bolt to a lower pillar and to connect the upper and lower pillars with a connecting bolt so that the diameter of the connecting bolt can be made smaller than that of the hoisting bolt. Especially.

[0007]

According to a first aspect of the present invention, there is provided a column-joining structure in which a bottom portion of an upper hollow column is connected to a top portion of a lower hollow column. An eggplant nut is provided, the screw diameter of the upper nut is made larger than the screw diameter of the lower nut, the upper nut is screwed on to the lifting bolt, and the lower nut is screwed on to the connecting bolt.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, a guide portion is provided on the top of the lower column, and an engaging portion that engages with the guide portion is provided on the bottom of the upper column. It will be.

According to the invention of claim 3, in a unit building in which upper and lower building units are joined, the bottom of the hollow pillar of the upper floor building unit is connected to the top of the hollow pillar of the lower floor building unit. It is configured to use the column-joint structure according to Item 1 or 2.

[0010]

According to the invention of claim 1, the following effects are obtained. At the top of the lower column, a large diameter upper nut for the lifting bolt and a small diameter lower nut for the connecting bolt, which are in two steps, were provided. Therefore, it is possible to use a bolt having a large diameter capable of withstanding the heavy lifting of the building unit as a lifting bolt, and a bolt having a small diameter commensurate with the required strength as a connecting bolt. As a result, the maneuverability and tightening workability of the connecting bolt, which must be screwed inside the hollow column, can be improved.

When the connecting bolt is screwed into the small diameter lower nut, the large diameter upper nut serves as a guide, so that the connecting bolt can be easily guided to the small diameter lower nut and the manipulability of the connecting bolt can be improved.

According to the invention of claim 2, there is the following effect. By engaging the engaging portion at the bottom of the upper pillar with the guide portion at the top of the lower pillar, the upper and lower pillars can be easily positioned, and lateral displacement of the upper and lower pillars after connection can be prevented.

According to the invention of claim 3, there is the following action. It is possible to easily join the upper and lower building units by realizing the above items 1 to 3 between the upper and lower columns of the upper and lower building units that form the unit building and are connected to each other.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing upper and lower building units forming a part of a unit building, and FIG. 2 is a schematic view showing a connecting process of upper and lower pillars.

As shown in FIG. 1, the building units 20A and 20B constituting the unit building 10 include four shaped steel floor girders 21 connected in a rectangular shape and four shaped steel members connected in a rectangular shape. A box-shaped frame structure including a ceiling girder 22 made of steel, and four square steel pipe hollow columns 23 connecting the corners of the floor frame formed by the floor girder 21 and the corners of the ceiling frame formed by the ceiling girder 22. Composed as a body.

A floor girder 24 is bridged between the floor girders 21 facing each other, and a floor covering (not shown) is laid on the floor girder 24 via a floor joist 25. Further, a ceiling joist 26 is bridged between opposing ceiling girders 22, and a ceiling surface material (not shown) is attached under the ceiling joist 26.

The building units 20A and 20B are vertically stacked at the construction site to construct a two-story building or a building with more than two floors. In this embodiment, the upper-floor building unit 20B is stacked on the lower-floor building unit 20A to construct the two-story unit building 10.

Pillars 23 constituting the lower floor building unit 20A
As shown in FIG. 2, an upper end face plate 31 is fixed to the top of the plate by welding or the like. On the lower surface of the upper end face plate 31, upper and lower nuts 32 and 33 are coaxially fixed to each other on the center axis of the pillar 23 by welding or the like, and the screw diameter of the upper nut 32 is smaller than that of the lower nut 33. Larger and upper nut 32
Is used for screwing the lifting bolt 34, which is an eyebolt, and the lower nut 33 is used for screwing the connecting bolt 35.
The upper end plate 31 is provided with insertion holes 36 for the lifting bolts 34 and the connection bolts 35 coaxially with the nuts 32 and 33. Further, a tapered guide portion 37 is formed on the upper surface of the upper end face plate 31 so as to project coaxially with the insertion hole 36.

Pillars 23 constituting the upper floor building unit 20B
As shown in FIG. 2, a lower end face plate 41 is fixed to the bottom of the plate by welding or the like. The lower end face plate 41 is provided with a circular engagement hole 42 (engagement portion) centered on the center axis of the column 23. The engaging hole 42 of this lower end face plate 41 provided in the pillar 23 of the upper floor building unit 20B engages with the guide portion 37 of the upper end face plate 31 provided in the pillar 23 on the side of the lower floor building unit 20A, and the upper and lower buildings. Pillars 23 and 23 of the units 20A and 20B
And the building units 20A and 20B after connection are prevented from being laterally displaced from each other.

Therefore, the unit building 10 is constructed as follows. (1) A lifting bolt 34 is screwed onto an upper nut 32 of an upper end face plate 31 provided on the top of the pillar 23 of the lower-floor building unit 20A (FIG. 2 (A)), and a lifting device such as a crane is attached to the lifting bolt. The lower-floor building unit 20A is lifted by being connected to 34, and the lower-floor building unit 20A is installed at a predetermined position such as the foundation of a construction site.

(2) The upper floor building unit 20B is hung in the same manner as the lower floor building unit 20A described in (1) above, and the engaging hole 42 of the lower end face plate 41 provided at the bottom of the pillar 23 of the upper floor building unit 20B is formed. , The pillar 2 of the upper and lower building units 20A and 20B so as to be engaged with the tapered guide portion 37 of the upper end face plate 31 provided on the top of the pillar 23 of the lower floor building unit 20A.
3 and 23 are coaxially positioned (FIG. 2 (B)).

(3) At the tip of a long bolt fastening tool (not shown), the connecting bolt 35 and washer 35A temporarily fixed by a magnet or the like are inserted into the pillar 23 of the upper floor building unit 20B, and this connection is made. Bolt 35 for lower floor building unit 20A
It is screwed to the lower nut 33 of the upper end face plate 31 provided on the top of the pillar 23. The connecting bolt 35 is screwed to the lower nut 33 on the lower floor building unit 20A side with the washer 35A being applied to the lower end face plate 41 of the upper floor building unit 20B (FIG. 2 (C)), and the lower floor building unit. Connect the bottom of the pillar 23 of the upper building unit 20B to the top of the pillar 23 of 20A,
As a result, the lower-floor building unit 20A and the upper-floor building unit 20B are joined.

According to this embodiment, there are the following effects. On the top of the pillar 23 of the lower-floor building unit 20A, a large-diameter upper nut 32 for the hoisting bolt 34, which is in two steps up and down.
And a small diameter lower nut 33 for the connecting bolt 35. Therefore, it is possible to use, as the lifting bolts 34, those having a large diameter capable of withstanding the heavy lifting of the building units 20A and 20B, and the connecting bolts 35 having a small diameter commensurate with the required strength. As a result, the maneuverability and tightening workability of the connecting bolt 35, which must be screwed inside the hollow column 23, can be improved.

When the connecting bolt is screwed into the small diameter lower nut 33, the large diameter upper nut 32 serves as a guide, and the connecting bolt is easily guided to the small diameter lower nut 33 so that the connecting bolt can be easily handled. Can be improved.

The engaging hole 42 at the bottom of the pillar 23 of the upper floor building unit 20B is formed in the tapered guide portion 37 at the top of the lower pillar.
By engaging with, the upper and lower columns 23 can be easily positioned, and lateral displacement of the upper and lower columns 23 after connection can be prevented.

The above-mentioned (1) to (3) are realized between the upper and lower pillars 23 of the upper and lower building units 20A and 20B which form the unit building 10 and are connected to each other.
A and 20B can be easily joined.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the gist of the present invention. Etc. are included in the present invention. For example, the pillar joint structure of the present invention is applicable not only to unit buildings but also to general buildings.

[0028]

As described above, according to the present invention, when the hoisting bolt is screwed to the lower pillar and the upper and lower pillars are connected by the connecting bolt, the connecting bolt is more advantageous than the hoisting bolt. Can be made smaller in diameter.

[Brief description of drawings]

FIG. 1 is a perspective view showing upper and lower building units forming part of a unit building.

FIG. 2 is a schematic diagram showing a step of connecting upper and lower pillars.

[Explanation of symbols]

10 unit building 20A lower floor building unit 20B Upper floor building unit 23 pillars 31 Top plate 32 Upper nut 33 Lower nut 34 Lifting bolt 35 Connection bolt 37 Guide 41 Bottom plate 42 Engagement hole (engagement part)

Claims (3)

[Claims] 1. In a column joining structure in which a bottom of an upper hollow pillar is connected to a top of a lower hollow pillar, a nut having two upper and lower stages is provided on the top of the lower pillar, and a screw diameter of the upper nut is set. A column joining structure characterized in that the diameter of the screw is larger than that of the lower nut, the upper nut is used for screwing a lifting bolt, and the lower nut is used for screwing a connecting bolt. 2. The column joining structure according to claim 1, wherein a guide portion is provided on a top portion of the lower pillar, and an engaging portion that engages with the guide portion is provided on a bottom portion of the upper pillar. 3. In a unit building in which upper and lower building units are joined, in connecting the top of the hollow pillar of the lower floor building unit to the bottom of the hollow pillar of the upper floor building unit, the method according to claim 1 or 2. A unit building that uses the joint structure of the pillars described.