JPH07292684A - Column base fixture and mounting structure therefor - Google Patents

Abstract

PURPOSE:To make it possible to erect an anchor bolt easily at a position in conformity with an accurately determined position of a steel base column, and facilitate level adjustment of the anchor bolt, and what is more, to fix the bolt with high strength. CONSTITUTION:This metal fitting comprises a template 7, which is provided with a positioning plate 5, which is installed to a PC board 4 with high positioning accuracy, and four anchor bolts 6 mounted vertically to the positioning plate 5 and a support frame 12 which is installed on the positioning plate 5 and supports vertically the anchor bolts 6 and an insertion hole which relates each of the anchor bolts each other. The positioning plate 5 is formed substantially on the central part in such a fashion that it may have a first confirmation opening 8 of a post core O which is an intersection point of linear marks S and T and a positioning angle 5A with the linear marks S and T. A support frame 12 has a substantially horizontal top 12A where the anchor bolts 6 are vertically installed to the top 12A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column base fixing metal fitting and its mounting structure, and more particularly to a column base fixing metal fitting used for installing a base plate such as a steel column base on a foundation and its mounting. It is about structure.

[0002]

2. Description of the Related Art Generally, an anchor bolt is buried in a predetermined position of a foundation leaving only an upper end portion, and a base plate of a column base is fixed by two or more anchor bolts. That is, a plurality of attachment holes for anchor bolts are formed at predetermined positions in the base plate, and the base plate is fixed by inserting the anchor bolts into these attachment holes and screwing nuts.

By the way, since the anchor bolt bears a tensile force and a shearing force as a medium for transmitting the stress of the column base, and at the same time it is necessary for positioning at the time of erection, its installation accuracy is strictly required. Conventionally, as a method of installing steel columns, etc., after installing underground metal fittings for driving concrete into concrete, reinforcing bar, etc., after welding and fixing templates, anchor bolts, etc. to these corresponding to the mounting position of the steel column Assembling the formwork of the foundation and driving concrete for the foundation.

[0004]

However, in the conventional mounting of steel columns, the metal objects such as the bar and the reinforcing bar are welded to each other while adjusting the template level.
Furthermore, because the anchor bolts and other parts are welded to the template, the position and level of the template, etc., shift during each welding operation, and it is not possible to ensure the preset standards for the template, etc. There has been a problem that a defect such as a defective level occurs on the reference surface of the column base.

Also, during these operations, the reference position of the column core marked with ground ink on the installation surface becomes unclear, making it difficult to align the anchor bolts, etc. There was even a risk of distorting or damaging the bar arrangement. Further, since these operations are performed on the discarded concrete, there is a problem that the level of the discarded concrete is irregular and it is difficult to level the grounding surface.

Therefore, an object of the present invention is to easily set up an anchor bolt at a position corresponding to accurate positioning of a steel column base, and also to easily adjust the level of the anchor bolt, and also to provide high strength. An object of the present invention is to provide a column base fixing bracket that can be fixed and a column base mounting structure.

[0007]

DISCLOSURE OF THE INVENTION The present invention, when driving concrete into a foundation to which a steel column base or the like is attached,
In a column base fixing metal fitting arranged on a foundation installation surface, a positioning plate which is positioned and installed by at least two or more linear marks passing through a column core of the column base formed on the installation surface, and the positioning plate Anchor bolts installed upright on the positioning plate, a support frame provided on the positioning plate for uprightly supporting the anchor bolts, and a plurality of anchor bolts installed above the positioning plate for accumulating the anchor bolts. The positioning plate is formed so as to have a first confirmation opening of a column core which is an intersection of the linear marks and an alignment corner portion with the linear marks at substantially the center. The support frame has a substantially horizontal upper surface, and a mounting hole is formed in the upper surface so that the anchor bolt can be screwed above and below the mounting hole. By providing a column base fixing member characterized by comprising attached erected by nuts, in which to achieve the above objects.

[0008]

In the column base fixing metal fitting according to the present invention, when the positioning plate is arranged on the foundation installation surface, the corners of the positioning plate are accurately lined while confirming the position of the column core through the first confirmation opening. It can be fitted to the shape mark. Also, since the anchor plate can be accurately erected by the support plate having a horizontal upper surface and can be interlocked with each other by the template, the upper end of the anchor bolt is consequently positioned exactly at the position of the mounting hole of the base plate of the column base, The entire lower end is embedded in the foundation.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a column base fixing metal fitting and its mounting structure according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an exploded perspective view of a column base mounting structure in which the column base fixing bracket according to the present embodiment is used. FIG. 2 is a partial cross-sectional view of a column base mounting structure. 3 (A) and 3 (B) are a plan view and a side view of the positioning plate of the column base fixing bracket of FIG. FIG. 4 is a side view of another positioning plate according to the embodiment.

As shown in FIGS. 1 to 3, a column base fixing member 1 according to the present embodiment has a prestressed concrete plate (hereinafter referred to as a PC plate) when driving concrete into which a steel column base 2 is attached. It is a pedestal fixing metal fitting that can be arranged on four surfaces (foundation installation surface).

The column base fixing member 1 has two orthogonal linear marks S and T passing through the column core O of the column base 2 formed on the PC board 4.
A positioning plate 5 which is positioned and installed by the positioning plate 5, four anchor bolts 6, 6 ... which are installed upright on the positioning plate 5, and a support frame which is provided on the positioning plate 5 to vertically support the anchor bolt 6. 12
And a template 7 provided with an insertion hole provided above the positioning plate 5 for accumulating the anchor bolts 6 with each other.
And the positioning plate 5 has a first confirmation opening 8 of the column core O, which is an intersection of the linear marks S and T, and an alignment corner portion 5A with the linear marks S and T, which is substantially at the center. The support frame 12 is formed and has a substantially horizontal upper surface 12
Nuts 15 and 16 which have A and which have the attachment hole 13 in the upper surface 12A, and screw the anchor bolt 6 in above and below the attachment hole 13.
It is installed upright by.

First, the column base fixing member 1 of this embodiment will be further described. As shown in FIGS. 1 and 2, a positioning plate 5 is provided.
Is formed in a rectangular shape, and further a rectangular first confirmation opening 8 is formed in the central portion. Further, a mounting hole 10 is provided near each corner 5A of the positioning plate 5, a hole-in anchor 11 is inserted into the mounting hole 10, and the positioning plate 5 is positioned and fixed to the PC plate 4 by the hole-in anchor 11. It is like this. The mounting hole 10 is for the PC board 4
When the corners 5A are aligned with the linear marks S and T formed on the surface, the linear marks S and T are formed at positions where they pass.

As shown in FIGS. 2 and 3, casing-shaped anchor bolt support frames 12 are welded and fixed to four positions of the positioning plate 5 except for each corner 5A. Attachment holes 13 and 14 for the anchor bolt 6 are formed in the upper surface 12A and the lower surface 12B of the support frame 12, and the anchor bolt 6 is vertically attached by the upper and lower nuts 15 and 16 and the washer 17 in a level adjustable state. In this case, the upper surface 12A of the support frame 12 has a high level of horizontality, and the upper surface 12A of the support frame 12 is located at a position 50 degrees higher than
It is desirable to have a height of -100 mm. Within such a range, the level of the anchor bolt 6 can be sufficiently adjusted, and the upper and lower nuts 15 and 16 of the anchor bolt 6 can be adjusted.
The vertical accuracy due to is sufficiently achieved. The anchor bolt 6 has a notch 18 formed in the positioning plate 5 at a standing position so that the anchor bolt 6 can contact the surface of the PC plate 4.

A template 7 is provided above each of the upright anchor bolts 6, and the template 7 is formed in a rectangular shape. In the template 7, insertion holes for anchor bolts are formed at positions corresponding to the mounting holes 13 and 14 of the support frame 12 of the positioning plate 5, and a rectangular second confirmation opening 9 is formed substantially in the center. Therefore,
The template 7 has each anchor bolt 6 through the insertion hole,
6 ... Accumulates each other to prevent misalignment and maintain verticality.

Next, the assembly of the column base mounting structure according to the present embodiment will be described. The column base fixing metal fitting 1 according to the present embodiment may be assembled almost completely up to the template and installed on the PC board 4. However, here, the assembling of an ordinary column base mounting structure will be described.

First, orthogonal linear marks S and T passing through the column core O at the position where the column base 2 is attached to the surface of the PC plate 4 are formed in advance as column core ink. Each corner 5 of the positioning plate 5
A is aligned with the linear marks S and T, and the positioning plate 5 is accurately and easily installed on the PC board 4. In this state, the hole-in anchor 11 is inserted into the mounting hole 10 of the positioning plate 5, and the positioning plate 5 is positioned on the PC board 4 by the hole-in anchor 11. Also in this case, it is possible to position while checking the linear marks S and T in the mounting hole 10. Since the fixing of the hole-in anchor 11 to the PC plate 4 with the nut may require fine adjustment, it may be completely fixed after the template 7 is attached.

Next, the upper and lower nuts 1 are attached to the support frame 12.
Anchor bolt 6 is attached while adjusting the level with Nos. 5 and 16. In this case, since the upper surface of the support frame 12 has a high degree of horizontality, the anchor bolt 6 can be made to stand at a correct position and with a high degree of verticality. Then, the template 7 is attached to each anchor bolt 6, and the upper end of the anchor bolt 6 is positioned more accurately.

When the concrete of the foundation 3 is driven in in such a state, the inside of the support frame 12 is also completely filled with the concrete, and the anchor bolts 6 are almost completely fixed. Therefore, after the concrete of the foundation 3 is driven in, the base plate 22 of the column base 2 can be attached to the anchor bolts 6, 6 ... Protruding accurately from the top end of the foundation 3. To attach the base plate 22, first, as shown in FIG. 2, the anchor bolt 6 is inserted into the attachment hole 23 of the base plate, and the installation position of the anchor bolt 3 is adjusted in consideration of a slight error so that the attachment hole 23 has a biased insertion hole. After mounting the metal fitting 24, it is fixed with the double nuts 25, 25.

Therefore, in the column base mounting structure of this embodiment,
As a result of accurately positioning the positioning plate 5 on the foundation mounting surface, the anchor bolt 6 and the base plate 2 of the steel column base
The positioning of the anchor bolt 6 becomes extremely easy, the self-standing of the anchor bolt 6 is accurately maintained by the support frame 12 and the template 7, and the level adjustment of the anchor bolt 6 can be ensured.

In this embodiment, the support frame 26 shown in FIG. 4 may be used. A part 26A of the bottom part and a part 26B of the side part of the support frame 26 are notched. In this case, the notch 26A and the notch 26B facilitate the attachment of the lower nut 16 when attaching the anchor bolt 6, and also facilitate the filling of the basic concrete. Further, in the present embodiment, the foundation 3 is cast on the PC board 4, but the present invention is not limited to this, and the foundation 3 can be cast on concrete for example. In this case, even if the level of the discarded concrete is irregular and it is difficult to level the grounding surface, it is possible to sufficiently deal with it.

[0021]

In the column base fixing bracket and the column base mounting structure according to the present invention, the anchor bolt can be easily erected at a position corresponding to the accurate positioning of the steel column base, and the level of the anchor bolt can be set. It can be easily adjusted and can be fixed with high strength.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a column base mounting structure using a column base fixing bracket according to the present embodiment.

FIG. 2 is a partial cross-sectional view of a column base mounting structure according to the present embodiment.

3A and 3B are a plan view and a side view of a positioning plate of the column base fixing member of FIG. 1.

FIG. 4 is a side view of another positioning plate according to the present embodiment.

[Explanation of symbols]

 1 column base fixing bracket 2 base plate 4 PC plate 5 positioning plate 5A corner of positioning plate 6 anchor bolt 7 template 8 first confirmation opening 9 second confirmation opening 12, 26 support frame 12A support frame upper surface 13, 14 mounting hole 15, 16 upper and lower nuts

Claims (3)

[Claims] 1. A pillar base fixing metal fitting, which is arranged on a foundation installation surface when driving concrete into which a steel pillar pillar is attached, passes through a pillar core of the pillar base formed on the installation surface. A positioning plate that is positioned and installed by at least two or more linear marks, a plurality of anchor bolts that are installed upright on the positioning plate, and an upright support of the anchor bolts that are provided on the positioning plate. It comprises a support frame and a template provided above the positioning plate and having an insertion hole for accumulating the plurality of anchor bolts with each other, and the positioning plate has a column core which is an intersection of the linear marks at substantially the center. The support frame is formed to have a corner for alignment with the first confirmation opening and the linear mark. A top surface having a column base fixing bracket that has a mounting hole on the upper surface, characterized by comprising attached erected by nuts screwed to the anchor bolt on the top and bottom of the mounting hole. 2. The template has a second confirmation opening, which can confirm the column core, through the first confirmation opening of the positioning plate, at substantially the center.
The column base fixing bracket described. 3. The positioning plate of the column base fixing bracket according to claim 1 or 2 is installed at a predetermined position on the foundation installation surface by the linear mark, and the upper end of the anchor bolt is left. A column pedestal mounting structure characterized by being made by driving the above-mentioned basic concrete into place.