JPH04277239A - Lift-up works by means of multi-ply steel pipe concrete column - Google Patents

Abstract

PURPOSE:To construct a building which is high in structural strength and excellent in earthquake resistance, quickly and at low cost. CONSTITUTION:The inner steel pipe column 1 of a steel pipe concrete column is built in at the specified position of a building to be constructed. Each slab 3 which is tentatively assembled, is lifted up with the inner steel pipe column 1 used as a support, so that each outer steel pipe column 4 is thereby installed at the outside of the inner steel pipe column 1 every floor. Concrete 5 is then filled in the inside of the outer pipe column 4.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift-up construction method using multiple steel pipe concrete columns.

0002

[Prior Art] Conventionally, there has been a method of lifting up a slab assembled on the ground using columns.

However, the conventional lift-up construction method described above has problems such as earthquake resistance because the slab is not sufficiently supported by the pillars of the building.

0004

[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to construct a building with high structural strength and excellent earthquake resistance. The purpose of this invention is to provide a lift-up construction method using multiple steel pipe concrete columns that can be used.

[0005]

[Means for Solving the Problems] The lift-up construction method using multiple steel pipe concrete columns of the present invention involves erecting inner steel pipe columns at predetermined column positions of a building to be constructed, and using the inner steel pipe columns as supports to assemble the ground. The slab is lifted up, an outer steel pipe column is attached to the outside of the inner steel pipe column for each floor, and the inside of the outer steel pipe column is filled with concrete.

The inside of the inner steel pipe column is either filled with concrete or made hollow.

[0007] For example, a multi-tubular steel pipe beam may be attached to the slab, in which an inner steel pipe beam attached to sandwich the inner steel pipe column is surrounded by an outer steel pipe beam.

[0008] After the lift-up, the inner steel pipe beam and the outer steel pipe beam may be filled with concrete or may be selectively made hollow.

[0009] It is also possible to construct the inner steel pipe columns in multiple layers and make some or all of the steel pipes hollow.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes an inner steel pipe column, which is installed at all column positions in a building. The inner steel pipe column 1 has a height (length) equal to the story of the building. Subsequently, concrete 2 is press-fitted into the interior of the inner steel pipe column 1 to improve its axial strength.

Next, the slabs 3 corresponding to the floors of the building are assembled into the ground and lifted up one after another as shown in FIG. The erection of the slab 3 may be carried out concurrently with or before the erection of the inner steel pipe columns 1 and the filling of the concrete 2.

After each slab 3 is lifted up to a predetermined position, as shown in FIG.
Install the outer steel pipe column 4. The outer steel pipe columns 4 are installed on each floor. Subsequently, the space between the outer steel pipe column 4 and the inner steel pipe column 1 is filled with concrete 5.

Note that the inner steel pipe column 1 and the outer steel pipe column 4
is not limited to round steel pipes, but may also be square steel pipes. Further, if the axial force of the inner steel pipe column 1 is sufficient to withstand the lift-up, filling of the inner steel pipe column 1 with concrete 2 may be omitted and the column may be made hollow to reduce weight.

Furthermore, in order to assemble the beam integrally with the slab 3 and lift it up, as shown in FIGS. 4 and 5, the lower side of the slab 3 should be An inner steel pipe beam 6 is placed at the inner steel pipe beam 6, and an outer steel pipe beam 7 is attached around the inner steel pipe beam 6.

The above-mentioned inner steel pipe beam 6 and outer steel pipe column 7 may be attached to the underside of the slab 3 when the slab 3 is assembled into the ground, or may be mounted after lifting up the slab 3. good. As shown in FIG. 6, all or part of the inside of the inner steel pipe beam 6 and the outer steel pipe beam 7 is filled with concrete 8.

FIG. 7 shows another embodiment in which steel pipe beams are joined in a cross shape, and a joining plate 9 is installed at the joint.
is provided, and the inner steel pipe column 1 is inserted into the opening made in the joint plate 9, and then lifted up.

[0017]

[Effect of the invention] Inner steel pipe columns are erected at predetermined pillar positions of the building to be constructed, the inner steel pipe columns are used as supports, the assembled slab is lifted up, and the outside of the inner steel pipe columns is placed outside the inner steel pipe columns for each floor. Since the steel pipe columns are attached and the inside of the outer steel pipe columns is filled with concrete, a building with high structural strength and excellent earthquake resistance can be constructed.

[Brief explanation of the drawing]

FIG. 1 is a work explanatory diagram showing the erection of an inner steel pipe column and the filling of concrete.

FIG. 2 is an explanatory diagram of slab lift-up work.

FIG. 3 is an explanatory diagram showing the installation of an outer steel pipe column and concrete filling work.

FIG. 4 is an explanatory diagram of a lift-up method in which steel pipe beams are attached to a slab.

FIG. 5 is a sectional view taken along line E in FIG. 4;

FIG. 6 is a sectional view showing the installation of the outer steel pipe column and the concrete filling operation.

FIG. 7 is a plan cross-sectional view of beams joined in a cross shape.

[Explanation of symbols]

1 Inner steel pipe column 2 Concrete 3 Slab 4 Outer steel pipe column 5 Concrete 6 Inner steel pipe beam 7 Outside steel pipe beam 8 Concrete 9 Joint plate

Claims (6)

[Claims] [Claim 1] Inner steel pipe columns are erected at predetermined pillar positions of the building to be constructed, the inner steel pipe columns are used as supports, the assembled slab is lifted up, and the outer steel pipe columns are installed on the outside of the inner steel pipe columns for each floor. A lift-up construction method using multiple steel pipe concrete columns, which is characterized by installing steel pipe columns and filling the inside of the outer steel pipe columns with concrete. 2. The lift-up method using multiple steel pipe concrete columns according to claim 1, wherein the inside of the inner steel pipe column is filled with concrete. 3. The lift-up method using multiple steel pipe concrete columns according to claim 1 or 2, wherein an inner steel pipe beam and an outer steel pipe beam are attached to the slab. 4. The lift-up method using multiple steel pipe concrete columns according to claim 3, characterized in that inner steel pipe beams are installed to sandwich the inner steel pipe column from both sides. 5. The lift-up construction method using multiple steel pipe concrete columns according to claim 3 or 4, wherein the inside of the inner steel pipe beam and the outer steel pipe beam are filled with concrete after the lift-up. 6. The multiple steel pipe concrete column according to any one of claims 1 to 5, characterized in that the inner steel pipe column is constructed in multiple layers, and a part or all of the inner steel pipes are hollow. Lift up method.