JP2552356Y2 - Pillar hardware - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column base fitting for connecting a steel column and a foundation concrete.

[0002]

2. Description of the Related Art In order to erect a steel column used for steel frame construction and steel-framed reinforced concrete construction on a base reinforced concrete, first, a column base metal is fixed on the base reinforced concrete, and a steel column is erected on the column base metal. However, conventional column base hardware has been joined to a steel column by welding.

[0003]

The above-mentioned conventional column base hardware is joined to a steel column by welding, that is, it involves severe work of welding, and due to the shortage of welding workers in recent years, the construction period has been delayed and the quality has been reduced. Could cause instability. Therefore, an object of the present invention is to provide a column base metal fitting which can eliminate a welding work with a steel column and can secure the same strength as joining by welding.

[0004]

According to the present invention, a plurality of projections are erected so as to face all side surfaces of a lower portion of a steel column, and a plurality of projections are provided on each surface of the projections in a lateral direction and a vertical direction. Also, a plurality of bolt holes are formed, and a plurality of anchor bolt holes through which a plurality of anchor bolts erected from the foundation concrete are respectively inserted are formed outside the protruding portion to support at least a part of the bottom surface of the steel column. The above object has been achieved by forming a receiving seat at the projecting portion.

[0005]

The above-mentioned column base metal can be bolted to the steel column, so that welding work between the column and the steel column can be eliminated, and the same strength as that obtained by welding can be secured.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and 2 show a column base hardware 1 according to a first embodiment of the present invention.
A rectangular cylindrical projecting portion 1a is erected so as to face the lower inner surface of the rectangular tubular steel column 2 to be erected.
Four bolt holes 1b are formed on each side of a, and 16 bolt holes 1b are formed, and a receiving seat 1c for supporting the bottom surface of the steel column 2 is provided all around the outer surface of the protruding portion 1a. This embodiment is configured as described above. An anchor bolt 4 is erected from a foundation reinforced concrete 3 and a foundation concrete 3
A rear-filled mortar 5 is cast on the mortar 5, and the column base 1 is placed on the rear-fill mortar 5.
With bolts. Thereafter, the steel column 2 is placed on the column base metal 1 with the gap adjusting plate 6 interposed between two adjacent sides of the four sides of the rectangular cylindrical steel column 2, and the column base metal 1 and the steel column 2 are connected to each other. Are fastened by bolts 7. With this, the erecting operation of the steel column 2 is completed, and the steel column 2 can be erected without performing the welding operation. In this embodiment, since the column base metal fitting 1 is provided with the seat 1c for supporting the bottom surface of the steel column 2, the steel column 2 can be easily positioned in the axial direction. Cast steel, forged steel, or spheroidal graphite cast iron can be used as the material of the column base metal 1.

Next, FIGS. 3 and 4 show a second embodiment of the present invention.
A protruding portion 1a having a substantially H-shaped cross section is used so as to face the inner surfaces of both side plates 8a, 8a of the H-shaped steel 8 and one side surface of the middle plate 8b. Twelve bolt holes 1b are formed in the protruding portion 1a, and a receiving seat 1c is provided at a position supporting the bottom surfaces of both side plates 8a, 8a of the H-shaped steel. In order to use the column base metal 1, notches 8 c are provided on both lower sides of the middle plate 8 b of the H-shaped steel, and the H-shaped steel 8 is connected to the column base metal 1 by interposing the gap adjusting plate 6 on one side plate 8 a of the H-shaped steel. The column base metal 1 and the H-section steel 8 are fastened by bolts 7.

Next, FIGS. 5 and 6 show a third embodiment of the present invention. This column base 1 is used for erecting a rectangular cylindrical steel column as in the first embodiment. And a receiving seat 1c for supporting the bottom surface of the steel column only at three places on the outer surface of the protruding portion 1a. With this configuration, the same effect as in the first embodiment can be obtained. In each of the above embodiments, the bolt hole 1b is provided with a screw. However, a similar effect can be obtained by using a bolt through hole without a screw and fastening with a nut.

[0009]

According to the present invention, there is provided a column base metal fitting which can eliminate welding work and can secure the same strength as joining by welding.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows AA in FIG.

FIG. 3 is a front view of a second embodiment.

FIG. 4 is a view taken in the direction of arrows BB in FIG. 3;

FIG. 5 is a front view of a third embodiment.

FIG. 6 is a plan view of the same.

[Explanation of symbols]

1 ... pillar base metal 1a ... protruding part 1
b ... bolt hole 1c ... receptacle 2 ... square tubular steel column 3
… Basic reinforced concrete 4… Anchor bolts 5… Mortar mortar 6
... Gap adjusting plate 7 ... Bolt 8 ... H-shaped steel 8
a: Side plate 8b: Middle plate 8c: Notch

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shigeru Hirakawa 1-9-1, Kitahama-ku, Wakamatsu-ku, Kitakyushu-shi, Fukuoka Hitachi Metals Co., Ltd. Wakamatsu Plant (72) Inventor Kuniaki Sato 1-2-1, Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Yuhiro Idono 1-7-2 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Toshio Saeki Tobita 2-chome 19, Chofu-shi, Tokyo No. 1 Kashima Construction Co., Ltd.Technical Research Institute (72) Inventor Akio Tomita 1-7 Motomoto Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Yoshihiro Nakamura 1-Chome Moto-Akasaka, Minato-ku, Tokyo No.2, 7 Kashima Construction Co., Ltd. (56) Reference Reference

Claims (3)

(57) [Scope of request for utility model registration] 1. A column base metal fitting for joining a steel column and a foundation concrete, wherein protruding portions are erected so as to face all lower side surfaces of the steel column, and a lateral direction is formed on each surface of the protruding portion. More than one
Also forms a plurality of bolt holes in the vertical direction, the bottom surface of the steel columns
Forming a seat for supporting at least a part of the protrusion,
A plurality of anchors erected from the foundation concrete
Front of multiple anchor bolt holes through which the
A column base hardware formed outside the projection . 2. The lower side surfaces of said steel column are opposed to each other.
One of the side surfaces to be
A gap adjusting plate is interposed between
The column base metal fitting according to claim 1, 3. The column base metal according to claim 1, wherein the metal base is formed of cast steel, forged steel, or spheroidal graphite cast iron.