JPH102019A - Fixing structure of column and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the confirmability of fixation of a column to a lower structure by preliminarily mounting a screw-like fastening tool to be inserted into the column of a building unit onto the column head in the state where it is protruded from the column head prior to screwing operation. SOLUTION: Then the column 14 of an upper floor building unit 11B is fixed to a lower floor building unit 11A, the unit 11B is lifted down onto the unit 11A. A fastening hole on the column leg 14B of the column 14 of the unit 11B is inserted while it is guided by the tapered guide part 21C of the screw-like receiving tool 21 of the unit 11A to load the unit 11B onto the unit 11A. Further, a screw-like fastening tool 22 arranged on the column head 14A of the column 14 of the unit 11B is inserted into the column 14 from the column head 14A by a fastening tool 31, and the screw-like fastening tool 22 is screwed to the screw-like receiving tool 21 to fix the column 14 of the unit 11B to the unit 11A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column fixing structure in a unit building and a method thereof.

[0002]

2. Description of the Related Art In a unit building, Japanese Patent Laid-Open No.
As described in Japanese Patent Publication No. 35, a factory-produced building unit is transported to a construction site, a lower-floor building unit is mounted on a foundation pre-installed at the construction site, and an upper-floor building is mounted on the lower-floor building unit. The unit will be mounted, and roof components will be mounted on the upper floor building unit.

However, in the prior art, after the lower-floor building unit is mounted on the foundation, the pillars of the lower-floor building unit are fixed to anchor bolts (screw-shaped receiving members) provided on the foundation, or After mounting the upper-floor building unit on the building unit, the bolts or nuts (screw-shaped support) provided on the lower-floor building unit with the pillars of the upper-floor building unit
Need to be fixed.

At this time, in the prior art, a fastening tool that can be inserted into the column is used, a screw-shaped fastener made of a nut or a bolt held at the tip of the fastening tool is inserted into the column, and the fastening tool is rotated. In particular, the screw fastener is screwed into the screw receiver.

[0005]

However, in the prior art, a portion for fixing a pillar of a building unit to a lower structure (a foundation or a lower-floor building unit) is located inside the pillar, and whether or not the portion is fixed is checked from the outside. There are difficulties to do.

[0006] The above-mentioned fastening tools must be transported from the factory to the building site together with the building unit and used, then collected and returned to the factory, and the number of fastening tools used must be reduced as much as possible. desired.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the confirmability of fixing a column of a building unit to a lower structure without increasing the number of fastening tools used.

[0008]

According to the first aspect of the present invention, a building unit is mounted on a lower structure, and a screw fastener inserted into a pillar of the building unit is provided on the lower structure. In a column fixing structure for screwing a certain screw-shaped receiving member to fix a column of a building unit to a lower structure, the screw-shaped fastener may be protruded from the capital prior to the screwing operation. It is intended to be attached to.

According to a second aspect of the present invention, in the first aspect of the present invention, a fastening tool for screwing the screw-shaped fastener includes a fastening member, and the fastening member is held by the fastening tool. And a connecting portion connected to the screw-shaped fastener, and a fragile portion that is broken by a constant torque between the held portion and the connecting portion.

According to a third aspect of the present invention, there is provided a screw-type receiving device in which a building unit is mounted on a lower structure and a screw-like fastener inserted into a pillar of the building unit is provided on the lower structure. In the method of fixing a pillar by screwing operation and fixing a column of a building unit to a lower structure, the screw-shaped fastener is attached to the column capital in a state of projecting from the capital in advance before the screwing operation. The threaded fastener is inserted into the pillar from the capital by means of a fastening tool, screwed into the threaded receiver, and the pillar of the building unit is fixed to the lower structure.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the fastening tool further includes a fastening member that engages with the threaded fastener and breaks at a constant torque. When the fastening tool reaches a certain torque in the process of screwing the screw fastener into the screw receiver, the fastening member is broken.

According to the first and third aspects of the present invention, the following operations are provided. The screw fastener is previously attached to the capital of the building unit in a protruding state. Therefore, as long as the screw fasteners protrude from the capital, it is not possible to seat the upper-floor building unit or the roof component on the building unit, and the construction cannot proceed. That is, at the stage of mounting the upper-floor building unit or the roof component on the building unit, it is always possible to confirm that the pillar of the building unit has been fixed to the lower structure.

[0013] The above confirmation is based on the fact that the screw fasteners provided in advance on the column heads of the columns themselves form protrusions, without the fact that a tool to be fastened to all the columns is preliminarily inserted in a protruding manner. Done by Therefore, it is not necessary to set the fastening tools on all the columns of the building unit in advance, and the number of fastening tools to be used can be reduced, and the cost for collecting the fastening tools can be reduced.

According to the present invention, the following effects are obtained. When the fastening tool reaches a certain torque in the process of screwing the screw fastener into the screw receiver via the fastening member,
The fastening member breaks. Thereby, even though the fastening tool is operated from outside the column, the screw-shaped fastener is screwed to the screw-shaped receiving member with a desired torque, so that the column of the building unit can be securely fixed to the lower structure. .

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing a process of installing a unit building, FIG. 2 is a schematic diagram showing a building unit, FIG.
FIG. 4 is a schematic diagram showing a column fixing structure, and FIG. 4 is a schematic diagram showing a column fixing procedure.

As shown in FIG. 1, the unit building 10 transports a plurality of factory-produced building units 11 to a construction site, and provides a foundation 12 in advance at the construction site.
The building unit 11 is constructed by lifting and installing the building unit 11 on the foundation 12.

At this time, as shown in FIG. 2, the building unit 11 is connected to four section steel floor beams 13 on the production line of the factory.
And four square steel pipe columns 14 and four shaped steel ceiling beams 15
And a floor surface material, a ceiling surface material, a wall surface material, a window, and the like are attached to the skeleton structure.

However, the pillars 14 of the building unit 11 are provided in the lower structure (lower floor building unit 1) as shown in the following (1) to (4).
1A or fixed to the base 12). In addition, the following (1) ~
(4) describes the case where the pillar 14 of the upper floor building unit 11B is fixed to the lower floor building unit 11A,
The same applies to the case where the pillar 14 of the lower-floor building unit 11A is fixed to the foundation 12.

(1) In the lower-floor building unit 11A fixed to the foundation 12, the screw-shaped receiving member 2
1 is provided (FIG. 4A). The screw receiver 21 is
Male screw portion 21 which has a bolt shape and is screwed to capital 14A
A and a male screw portion 21B to which the screw fastener 22 is screwed.
And a tapered guide portion 21C.

The upper-floor building unit 11B is suspended by a crane or the like, and the fastening holes 14C provided in the column bases 14B of the pillars 14 in the upper-floor building unit 11B are screwed into the above-mentioned screw-like holes provided in the lower-floor building unit 11A. The upper-floor building unit 11B is mounted on the lower-floor building unit 11A while being guided and inserted into the guide portion 21C of the receiver 21 (FIG. 3).
(A), FIG. 4 (A)).

(2) Pillar 1 in the upper floor building unit 11B
The threaded fastener 22 is set on the fourth capital 14A in advance at the factory production stage. The screw-shaped fastener 22 has a nut shape, and has a male screw portion 22A screwed to the capital 14A,
A female screw portion 22B screwed to the screw-shaped receiving member 21 is provided, and a washer 23 is provided at a lower end portion. At this time,
The upper end of the screw-shaped fastener 22 is screwed to the capital 14A so as to protrude from the capital 14A of the pillar 14 (FIG. 3).
(A), FIG. 4 (B)).

(3) Threaded fastener 2 by the fastening tool 31
2 is inserted into the pillar from the capital 14A of the pillar 14, the screw-like fastener 22 is screwed into the screw-like receiving member 21, and the pillar 14 (the pillar 14B) of the upper-floor building unit 11B is attached to the lower-floor building unit 11
The column A is fixed to the column 14 (the column capital 14A) (FIGS. 3B and 4C).

At this time, the fastening tool 31 is provided so that the fastening member 32 can be attached and detached and exchanged. The fastening member 32 includes a square rod-shaped held portion 32A that is engaged and held in the front end square hole-shaped holding portion 31A of the fastening tool 31, and a female screw portion 22B of the screw-shaped fastener 22.
And a flanged connecting portion 32B which is screwed to the connecting portion, and a constricted weak portion 32C which is broken by a constant torque between the held portion 32A and the connecting portion 32B. The held portion 32A of the fastening member 32 is held by the square hole-shaped holding portion 31A of the fastening tool 31 by a locking pin or a magnetic force. Thereby, when the above-mentioned fastening tool 31 reaches a certain torque in the process of screwing the screw fastener 22 to the screw receiver 21, the fastening member 32 is broken at the weak portion 32 </ b> C, and the screw fastener 22 is The screw can be screwed into the screw-shaped receiving member 21 with a predetermined torque (FIGS. 3C and 4D).

(4) The fastening tool 31 is pulled out of the column together with the held portion 32A of the fastening member 32. The fastening member 32
The held portion 32A of the fastening tool 31 is
When the screw fastener 22 of the above (3) is screwed into the screw receiver 21 when fixedly held by a fixing pin or the like, the fragile portion 32C of the fastening member 32 is , The fastening tool 31 cannot be pulled out of the column.

Hereinafter, the operation of the present embodiment will be described. The screw fastener 22 is attached to the capital of the building unit 11 in a protruding state in advance. Therefore, as long as the screw fastener 22 projects from the capital 14A, the building unit 11
The upper-floor building unit 11B and the roof component cannot be seated and mounted on the floor, and the construction cannot be advanced. That is, at the stage of mounting the upper-floor building unit 11B and the roof component on the building unit 11, it is always possible to confirm that the columns of the building unit 11 have been fixed to the lower structure.

The above confirmation is based on the fact that the tool to be fastened to all of the columns 14 is inserted in a protruding manner in advance, but the screw-like fasteners 22 previously provided on the column head 14A of each column 14 are not used.
This is done by forming a protrusion. Therefore, the fastening tool 31 is connected to all the columns 14 of the building unit 11.
Need not be set in advance, the number of fastening tools 31 used can be reduced, and the collection cost of the fastening tools 31 can be reduced.

When the fastening tool 31 reaches a certain torque in the process of screwing the screw fastener 22 into the screw receiver 21 via the fastening member 32, the fastening member 32 breaks. Thereby, even though the fastening tool 31 is operated from outside the column, the screw-shaped fastener 22 is screwed into the screw-shaped receiving member 21 with a desired torque, and the column 14 of the building unit 11 is securely placed on the lower floor. Can be fixed to a structure.

The embodiment of the present invention has been described in detail 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 within a range not departing from the gist of the present invention. The present invention is also included in the present invention.

[0029]

As described above, according to the present invention, it is possible to improve the confirmation that the pillar of the building unit is fixed to the lower structure without increasing the number of fastening tools used.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an installation process of a unit building.

FIG. 2 is a schematic diagram showing a building unit.

FIG. 3 is a schematic view showing a column fixing structure.

FIG. 4 is a schematic view showing a procedure for fixing a pillar.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Unit building 11, 11A, 11B Building unit 14 Column 21 Screw-shaped receiver 22 Screw-shaped fastener 31 Fastening tool 32 Fastening member 32A Held part 32B Connection part 32C Weak part

Claims (4)

[Claims] 1. A building unit is mounted on a lower structure, and a screw fastener inserted into a pillar of the building unit is screwed into a screw receiver provided on the lower structure to operate the building unit. A column fixing structure for fixing a column to a lower structure, wherein the screw-like fastener is attached to the column capital in a state where the screw-shaped fastener is projected from the column capital in advance before the screwing operation. Construction. 2. A fastening tool for screwing the screw fastener, comprising a fastening member, wherein the fastening member is held by the fastening tool, a connection part connected to the screw fastener, and 2. A fragile portion which is broken by a constant torque between the holding portion and the connecting portion.
The fixed structure of the pillar described. 3. A building unit is mounted on a lower structure, and a screw fastener inserted into a pillar of the building unit is screwed into a screw receiver provided on the lower structure to operate the building unit. In the method for fixing a column to a lower structure, the screw-shaped fastener is attached to the column head in a state where the screw-shaped fastener is projected from the column head in advance before the screwing operation, and the screw-shaped fastener is fastened. A method for fixing a pillar, comprising inserting the pillar of the building unit to the lower structure by inserting the pillar into the pillar from the capital by means of a tool, screwing into the screw-shaped receiving member, and securing the pillar of the building unit to the lower structure. 4. A fastening tool having a fastening member that engages with the threaded fastener and breaks at a constant torque as the fastening tool, and the fastening tool screws the threaded fastener into a threaded receiving member. 4. The method according to claim 3, wherein the fastening member is broken when a predetermined torque is reached during the process.