JPH07197657A - Method and equipment for pressing concrete into steel-pipe column - Google Patents

Abstract

PURPOSE:To prevent the leaving of pipes filled with concrete on the surface of a column after concrete is pressed into the steel-pipe column, and to shorten the labour hour of steel frame machining. CONSTITUTION:A reinforcing material 3 is welded to the inwall surface of a column surrounding a concrete press-in port 2 formed to the steel-pipe column 1, stud bolts 1A are bored to the external surface of the column, and a slide valve 4 with a parting plate 7 opening and closing grease nipples 8 and the press-in port 2 through the stud bolts 1A is mounted. Concrete is pressed in and filled into the steel-pipe column 1 from the press-in port 2 through the parting plate 7, the concrete press-in port 2 is closed by the parting plate 7, pressed-in concrete is cured, and the slide valve 4 is removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for press-fitting and filling concrete into a steel pipe column.

[0002]

2. Description of the Related Art Conventionally, when concrete is pressed into a steel pipe column by using a concrete pump car, an elbow pipe b is embedded in the steel pipe column a, and a pin valve c is attached to the portion of the pipe projecting from the column surface to form a concrete pipe. d
Was connected. (See Figure 7)

[0003]

In the above-mentioned prior art, after the concrete is hardened, the pipe filled with concrete remains on the pillar surface even if the pin valve is removed. Further, since the elbow pipe is incorporated in the steel pipe column, a lot of work is required for processing. The present invention has been proposed in view of the problems of the prior art, the purpose of the purpose, after press-fitting concrete into the steel pipe column, without leaving a pipe clogged with concrete on the surface of the column, Another object of the present invention is to provide a method and an apparatus for press-fitting concrete into a steel pipe column in which the time and effort required for steel frame processing are simplified.

[0004]

In order to achieve the above-mentioned object, according to the method of concrete press-fitting for a steel pipe column according to the present invention, a reinforcing material is welded to the inner wall surface of the column surrounding the concrete press-in port provided in the steel pipe column. In addition, a stud bolt is protrudingly provided on the outer surface of the pillar, and a slide valve having a partition plate that opens and closes the grease nipple and the pressure inlet is attached through the stud bolt, and the slide valve is opened through the partition plate. The concrete is press-fitted and filled into the steel pipe column from the press-fitting port, the press-fitting of the concrete is completed, the press-fitting port is closed through the partition plate, and after the concrete is hardened, the slide valve is removed. It is a thing.

In order to achieve the above method, in the concrete press fitting apparatus for steel pipe columns according to claim 2, a reinforcing material is welded to the inner wall surface of the column surrounding the concrete pressure inlet provided in the steel pipe column, and the outer wall surface of the column is welded. A stud bolt is projected, and a slide valve with a grease nipple and an opening / closing partition plate is attached to the concrete press-fitting through the stud bolt, and the concrete valve insertion pipe communicating with the concrete pressure inlet is attached to the slide valve. Wearing pipe is projected.

[0006]

According to the present invention, as described above, a slide valve having a partition plate for opening and closing a concrete pressure inlet provided in a steel pipe column is attached via a stud bolt projecting on the outer periphery of the pressure inlet, After the concrete press-fitting to the pillar is completed, the concrete press-in port is closed by the partition plate,
By stopping the outflow of concrete and removing the slide valve after the concrete has hardened, the concrete is partitioned on the surface of the steel pipe column, and the concrete pressure inlet is closed,
The cutting process is unnecessary, and the work of attaching the concrete press-fitting member to the steel pipe column of the slide valve is simplified.

Further, since the reinforcing material is welded to the inner wall surface of the column surrounding the concrete pressure inlet of the steel pipe column, the reinforcement welding for closing the concrete pressure insertion hole is not necessary.

[0008]

The present invention will be described below with reference to the illustrated embodiments. Reference numeral 1 is a steel pipe column, 2 is a concrete pressure inlet provided on the column surface, a reinforcing material 3 is welded to the inner wall surface of the column surrounding the pressure inlet 2, and a stud bolt 1A is projectingly provided on the outer surface of the column. The slide valve 4 is attached via the stud bolt 1A.

The slide valve 4 is composed of a back plate 5 in contact with the surface of the pillar 1, a front plate 6, and a partition plate 7 slidably interposed between the front and back plates. The front plate 6 is joined by stud bolts 1A and bolts 1B protruding from the back plate 5. In the figure, 5a is formed in the back plate 5, a through hole that matches the concrete injection port 2, and 6a is provided in the front plate 6 and communicates with the pressure inlet 2.
It is also a pipe for connecting concrete pipes.

Further, the partition plate 7 is provided with a through hole 7a at a portion corresponding to the concrete pressure inlet 2, and the partition plate 7
The concrete pressure inlet 2 is opened and closed in accordance with the sliding. In the figure, 7b is a rib of the partition plate 7.
Further, the front plate 6 is provided with a grease nipple 8 for improving the sliding of the partition plate 7.

Since the illustrated embodiment is constructed as described above, the partition plate 7 of the slide valve 4 is slid to open the concrete pressure inlet 2 of the steel pipe column 1 and the pipe 6
Steel pipe column 1 via concrete press fitting pipe connected to a
Concrete is press-fitted into the concrete, and after completion of the press-fitting of the concrete, the partition plate 7 is slid to slide the concrete press-fit 2
Is closed to stop the concrete from flowing out, and the slide valve 4 is removed after the concrete is hardened. After the removal, the concrete does not have a projecting portion on the surface of the steel pipe column 1 and thus the finishing work of the concrete press-fitting port 2 is unnecessary, and it is reinforced by the reinforcing material 3 on the inner surface of the steel pipe column 1 and the reinforcing welding for closing the hole is unnecessary.

Further, the grease nipple 8 improves the sliding of the partition plate 7.

[0013]

As described above, according to the present invention, a partition plate provided on a slide valve provided at a concrete pressure inlet of a steel pipe column is configured to open and close the same pressure inlet, so that the concrete pressure can be injected. After the completion, by closing the concrete inlet with the partition plate and removing the slide valve after hardening of the poured concrete, no protrusions remain on the column surface, and there is no need to finish the concrete tube press-fitting part of the steel pipe column. Becomes Further, the slide valve can be diverted, the slide valve can be disassembled, the inside can be cleaned as necessary, and the grease nipple provided on the slide valve improves sliding of the partition plate.

Further, it suffices to attach a press-fitting hole and a stud bolt to the steel pipe column, which facilitates the work of steel frame processing.

[Brief description of drawings]

FIG. 1 is an elevational view showing a state where a slide valve is attached to a steel pipe column.

FIG. 2 is a plan sectional view of FIG.

3A and 3B are a partial plan sectional view and an elevation view of a steel pipe column.

4A and 4B are a plan sectional view and an elevation view of a back plate of a slide valve.

5A and 5B are a plan sectional view and an elevation view of a partition plate in a slide valve.

6A and 6B are a plan sectional view and an elevation view of a front plate of a slide valve.

FIG. 7 is a vertical cross-sectional side view showing a conventional method for press-fitting concrete into a steel pipe column.

[Explanation of symbols]

 1 Steel Pipe Column 1A Stud Bolt 1B Bolt 2 Concrete Inlet 3 Reinforcing Material 4 Slide Valve 5 Back Plate 5a Through Hole 6 Front Plate 6a Pipe 7 Partition Plate 7a Through Hole 7b Rib 8 Grease Nipple

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuneyasu Tsuruta 83-11 Otawa, Fujioka-machi, Shimotsuga-gun, Tochigi Nawa Tochigi Plant

Claims (2)

[Claims] 1. A reinforcing material is welded to an inner wall surface of a pillar surrounding a concrete pressure inlet provided in a steel pipe pillar, and a stud bolt is projected on the outer surface of the pillar, and a grease nipple is provided through the stud bolt. And a slide valve having a partition plate for opening and closing the pressure inlet is attached, concrete is press-fitted and filled into the steel pipe column from the pressure inlet opened through the partition plate, and the press-fitting of the concrete is completed. A method for press-fitting concrete into a steel pipe column, comprising closing the press-in port via the partition plate, removing the slide valve after hardening the concrete. 2. A reinforcing material is welded to the inner wall surface of the pillar surrounding the concrete pressure inlet provided in the steel pipe pillar, and a stud bolt is projectingly provided on the outer wall surface of the pillar, and a grease nipple is inserted through the stud bolt. And a slide valve equipped with the concrete pressure inlet opening and closing partition plate,
A concrete pipe press-fitting device for a steel pipe column, wherein a pipe for inserting concrete pipe which communicates with the concrete press-in port is projectingly provided on the slide valve.