JPH06288006A - Column base metal fitting - Google Patents

Abstract

PURPOSE:To increase the supporting strength, by forming fitting holes for a column base on the base plate and placing a connection plate to fix the column base on the surface of the base plate. CONSTITUTION:A fitting hole 12 forming a square ring-shape is made in the center of the upper face of a base plate 11 and an inner connection plate 13 is provided as a unit along the full inner periphery of the fitting hole 12. And an outer connection plate 15 is provided as a unit along the full outer periphery of the fitting hole 12 to form a column base metal fitting 1. Next, the lower end of a column base B is forced to pass through between the inner connection plate 13 of the column base metal fitting 1 and the outer connection plate 15 to fit in the fitting hole 12 and fixed on a metal fitting 1 by a bolt E screwed in the screw hole 14 of the inner connection plate 13 through the bolt insertion hole 16 of the outer connection plate 15 and the hole B1 of the column base B. Next, the column base B is erected on the foundation concrete A and the base plate 11 is fixed by the anchor bolts C and nuts D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column base metal piece used when a column base is installed on a foundation concrete.

[0002]

2. Description of the Related Art In general, a column pedestal is composed of a base plate and a connecting plate which is erected on the upper surface of the base plate. The legs are connected and fixed (see JP-A-56-64050).

[0003]

In the conventional column pedestal, the connecting plate receives the bending moment acting on the pedestal, but since the connecting plate is erected on the base plate,
Relatively high strength against tensile and compression, but low flexural strength. Therefore, there has been a problem that the supporting strength for the bending moment acting on the column base is low.

[0004]

The present invention has been made in order to solve the above problems and includes a base plate,
In a pillar pedestal equipped with a connecting plate that is erected on the upper surface of the base plate and to which the pillar pedestal is fixed, a fitting hole into which the pillar pedestal is fitted is formed in the base plate.

In this case, the fitting hole is preferably formed as a through hole that penetrates the base plate. Further, it is desirable that the connecting plate be erected along the entire circumference of the fitting hole.

[0006]

When the column base is fixed to the connecting plate, the column base is fitted into the fitting hole. Therefore, a part of the bending moment acting on the column base is supported by the base plate, and the supporting strength against the bending moment is improved.

In this case, if the fitting hole is formed by penetrating the base plate, the fitting length between the base plate and the column base becomes long, and the supporting strength against the bending moment is improved accordingly. Further, when the connecting plate is formed along the entire circumference of the fitting hole, the portion adjacent to the bending moment acts as a so-called reinforcing rib, so that the supporting strength against the bending moment is increased. improves.

[0008]

Embodiments of the present invention will now be described with reference to FIGS.
Will be described with reference to. 1 and 2 are views showing a state in which a column base B made of a hollow rectangular steel frame is installed on a foundation concrete A via a column base metal fitting 1 according to the present invention. The pedestal metal fitting 1 is cast from cast steel and has a square base plate 11.
A square annular fitting hole 12 is formed in the center of the upper surface of the base plate 11. This fitting hole 12
Is for fitting the lower end portion of the column base B, and its cross-sectional shape is formed to be substantially the same as the cross-sectional shape of the column base B. The base plate 11 is fixed on the foundation concrete A by a nut D screwed to the anchor bolt C.

An inner connecting plate (connecting plate) 13 is integrally erected on the upper surface of the base plate 11 along the entire inner circumference of the fitting hole 12. A screw hole 14 is formed in the inner connecting plate 13. In addition, on the upper surface of the base plate 11,
An outer connecting plate (connecting plate) 15 is erected integrally along the entire outer circumference of the fitting hole 12. A bolt insertion hole 16 is formed in the outer connecting plate 15 at a position facing the screw hole 14.

When the column base B is installed on the foundation concrete A by using the column base metal 1 having the above-mentioned structure, the column base metal 1 is fixed to the lower end of the column base B in advance. When fixing this,
A bolt E in which the lower end of the column base B is fitted into the fitting hole 12 through the space between the inner connecting plate 13 and the outer connecting plate 15 and screwed into the screw hole 14 through the bolt insertion hole 16 and the hole B _{1 of the} column base B. Fixed by. Then, the column base B is erected on the foundation concrete A, and the base plate 11 is fixed to the anchor bolt C.
And fix with nut D.

In the above-described column base metal fitting 1, the fitting hole 12
Since the column base B is fitted to the base plate 11, the base plate 11 supports a part of the bending moment acting on the column base B. Therefore, the supporting strength against the bending moment is improved.

Further, in this pillar pedestal 1, since the connecting plates 13 (15) form an annular shape and are continuously connected,
When a bending moment acts on one side of the connecting plate 13 (15), the adjacent side extending in the direction orthogonal to this acts as a reinforcing rib on the one side. Therefore, the supporting strength against the bending moment can be further improved.

Next, another embodiment of the present invention will be described. The same parts as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted. The pedestal metal fitting 2 shown in FIG. 3 has the fitting hole 22 formed as a through hole. Fitting hole 2
Since 2 penetrates the base plate 11, there is no connecting plate corresponding to the inner connecting plate 13 of the above embodiment, and the outer connecting plate 1
Only the connecting plate 25 corresponding to 5 is formed.

In this embodiment, the metal plate P is interposed between the base concrete A and the column base metal fitting 2. This is because the lower end surface of the column base B is connected to the base concrete via the plate P. It is made to abut against A so that the compressive load acting on the column base B is supported by the foundation concrete A together with the connecting plate 25.

Since the fitting hole 22 penetrates through the base plate 11 in the pillar base metal fitting 2, the fitting hole 22 and the pillar base B fit in the fitting hole 22 more than the blind base metal fitting 1 described above. The joint length can be increased. Therefore, the supporting strength against the bending moment can be further improved.

Further, the nut F is screwed to the bolt E for fixing the column base B to the connecting plate 25. When screwing the nut F, the nut F is screwed inward from the lower end opening of the fitting hole 22. The nut F can be screwed by inserting a hand, and the work efficiency is improved.

The column base metal fitting 3 shown in FIG. 4 corresponds to the case where H-shaped steel is used as the column base, and the fitting hole 3
2 has a "H" -shaped cross section, and a connecting plate 35 is provided upright along the entire outer circumference thereof.

The pedestal metal fitting 4 shown in FIG. 5 shows a modification of the pedestal metal fitting 3 shown in FIG.
On the upper surface of the, two connecting plates 45A, 45A facing the outer surfaces of both side plate portions of the H-shaped steel and two connecting plates 45B, 45B facing both sides of the central plate portion of the H-shaped steel are erected, respectively. .

A pedestal metal piece 5 shown in FIG. 6 shows another modification of the pedestal metal piece 3 shown in FIG. 4, in which the upper surface of the base plate 11 has inner surfaces on one end side of both side plate portions of the H-shaped steel and A connecting plate 55A facing one surface of the central plate portion, and a connecting plate 55B facing the other inner surface of both side plate portions of the H-shaped steel and the other surface of the central plate portion are respectively provided upright.

The present invention is not limited to the above embodiments, but can be modified as appropriate without departing from the spirit of the invention. For example, in the above embodiment, the column bases made of square steel or H-shaped steel are connected and fixed, but columnar bases of other shapes, for example, circular may be connected. In that case, it goes without saying that the cross-sectional shape of the fitting hole should be the same as the cross-sectional shape of the column base.

[0021]

As described above, according to the pole pedestal of the present invention, since the base plate is formed with the fitting hole into which the column pedestal is fitted, the support strength against the bending moment of the column pedestal is improved. The effect that can be obtained is obtained.
Also, if the fitting hole is a through hole, the supporting strength can be further improved, and if the connecting plate and column base are fixed with bolts and nuts, the tightening work efficiency is improved. Can be made. Further, the support strength can be further improved by erected the connecting plate along the entire circumference of the fitting hole.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line XX of FIG. 2, showing a state where a column base is installed on a foundation concrete using a column base metal fitting as an embodiment of the present invention.
FIG.

FIG. 2 is a plan view of the embodiment shown in FIG.

FIG. 3 is a sectional view similar to FIG. 1, showing another embodiment of the present invention.

FIG. 4 is a plan sectional view showing another embodiment of the present invention.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 A Foundation concrete B Column base 1 Column base hardware 2 Column base hardware 3 Column base hardware 4 Column base hardware 5 Column base hardware 11 Base plate 12 Fitting hole 13 Inner connecting plate (connecting plate) 15 Outer connecting plate (connecting plate) 22 Fitting Joint hole 25 Connection plate 32 Fitting hole 35 Connection plate 45A Connection plate 45B Connection plate 55A Connection plate 55B Connection plate

Claims (3)

[Claims] 1. A pillar pedestal having a base plate and a connecting plate which is erected on the upper surface of the base plate and to which the pillar pedestal is fixed, wherein a fitting hole into which the pillar pedestal is fitted is formed in the base plate. Column base metal fittings characterized by that. 2. The column base metal fitting according to claim 1, wherein the fitting hole is formed so as to penetrate the base plate. 3. The pillar pedestal according to claim 1, wherein the connecting plate is provided upright along the entire circumference of the fitting hole.