JPH08120684A - Construction of anchor frame - Google Patents

Abstract

PURPOSE: To eliminate the remaining concrete to be casted and back filling and dispensing with grouting to reduce a cost and to facilitate execution by mounting a top board to the upper end so as to make the level of the upper surface flush with the floor surface of footing concrete, and mounting a column base plate on the top bard to weld. CONSTITUTION: A top board 6 is flush with footing concrete 4 and floor surface 5 and is mounted to the upper end of an anchor frame main body 1. The top board 6 and anchor bolts 2 are welded to connect and, a column base plate 8 and a column 7 on the top board 6 are welded to connect. By the constitution, restrictions for conventional bolt connection are canceled, installation tolerances of the anchor frame main body 1 can be easily absorbed, and horizontal force can be smoothly transferred. The remaining concrete to be casted and back filling work can be eliminated and, grouting is dispensed with to reduce the cost. Execution work of installation can be easily carried out by making the top board 6 flush with the floor surface 5 of the footing concrete 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an anchor frame for installing columns constituting a building.

[0002]

2. Description of the Related Art The structure of a conventional anchor frame of this type is, for example, as shown in FIG. In FIG. 2, 11 is an anchor frame main body, 12 is an anchor bolt, 13 is a truss material, 14 is basic concrete in which the anchor frame main body 11 is embedded, 15 is a floor surface of the concrete 14, 16 is a building. Pillar, 17
Is a column base plate, and 18 is a fastening nut.

That is, the pillar base plate 17 is fastened by the fastening nut 18 to the anchor bolt 12 installed in the anchor frame body 11.

[0004]

As described above, in the prior art, since the column base plate 17 is fastened to the anchor bolt 12, it is necessary to leave the base concrete 14 at that portion. There was a problem that In addition, sufficient care must be taken to prevent the anchor frame body 11 from moving during concrete pouring, and since the anchor bolt 12 cannot bear a horizontal force, that is, between the anchor bolt and the anchor bolt hole. Since there is clearance, there is a problem in that an extra step such as having to fix the standing bar to the pillar 16 is required.

The present invention is intended to solve the above problems. That is, the present invention does not need to leave unfilled or backfilled foundation concrete and grout,
Another object of the present invention is to provide an anchor frame capable of absorbing installation error of the anchor frame body and smoothly transmitting horizontal force.

[0006]

In order to achieve the above object, the present invention has a top plate provided at the upper end of an anchor frame body, and the level of the top surface of the top plate is the floor surface of basic concrete. At the same level as the above, and the pillar base plate is mounted on the top plate by welding.

[0007]

According to the present invention, there is a top plate provided at the upper end of the anchor frame body, and the level of the top surface of the top plate is the same level as the floor surface of the foundation concrete,
Moreover, since the pillar base plate is locally welded on the top plate, the construction when installing the pillars constituting the building is easy, and the connection between the pillar base plate and the top plate is not a bolt, but welding. Therefore, it becomes easy to absorb an installation error when the anchor frame main body is moved when pouring concrete.

[0008]

1 shows an embodiment of the present invention. In FIG. 1, 1 is an anchor frame body, 2 is an anchor bolt, 3 is a truss material, 4 is foundation concrete that has been cast, 5 is the floor surface thereof, and 6 is provided at the upper end of the anchor frame body 1. A steel top plate, 7 are steel columns constituting a building, and 8 is a steel column base plate on which the columns 7 are welded.

That is, the top plate 6 is at the same level as the floor surface 5 of the foundation concrete 4, is welded to the anchor bolts 2, and also fixes the column base plate 8 by welding. The pillar 7 and the pillar base plate 8 are also welded and joined.

In the anchor frame constructed as shown in FIG. 1, a top plate 6 provided at the same level as the floor surface 5 of the foundation concrete 4 is provided at the upper end of the anchor frame body 1, and the top plate 6 is provided. Since the anchor bolt 2 and the anchor bolt 2 are welded together, and the pillar base plate 8 and the pillar 7 which are the upper members of the top plate 6 are also welded together, there are various restrictions in the conventional bolt connection. It was resolved.

That is, the installation error of the anchor frame body 1 can be easily absorbed, and the horizontal force can be transmitted smoothly. In addition, there is no need to leave unfilled concrete and backfilling work, and there is no need for grout, leading to cost reduction. Overall, the top plate 6 is the basic concrete 4
Since it is on the same level as the floor surface 5, the construction work becomes easy.

[0012]

As described above, according to the present invention,
Having a top plate provided on the upper end of the anchor frame body,
And, when the level of the top surface of the top plate is at the same level as the floor surface of the basic concrete, and the pillar base plate is mounted on the top plate and locally welded, the pillars constituting the building are installed. The construction of the pillar base plate and the top plate is made by welding instead of bolts, so that it is easy to absorb the installation error such as the movement of the anchor frame main body during concrete placing, The horizontal force can be transmitted smoothly, and the work of leaving unfilled concrete and backfilling is eliminated and the need for grout is eliminated, leading to cost reduction.

[Brief description of drawings]

FIG. 1 is a partial sectional front view showing an embodiment of the present invention.

FIG. 2 is a partially sectional front view showing an example of a conventional technique.

[Explanation of symbols]

 1 Anchor frame body 4 Foundation concrete 5 Floor surface 6 Top plate 7 Pillar 8 Pillar base plate

Claims (2)

[Claims] 1. A top plate provided at the upper end of the anchor frame main body, and the level of the top surface of the top plate is at the same level as the floor surface of the foundation concrete, and the pillar base plate is the top plate. Anchor frame structure characterized by being welded onto a plate. 2. The structure of the anchor frame according to claim 1, wherein the pillar is mounted on the pillar base plate by welding.