JPH0598712A - Form structure of column for unit building - Google Patents

Abstract

PURPOSE:To enhance construction performances of forms for columns by providing forms in a plurality of gaps between columns around an intercolumn region of adjacent building units and connecting the forms by joint members. CONSTITUTION:A column unit 13 is disposed in an intercolumn region of an inner unit and outer unit which are adjacent to each other and a steel pipe 41 is penetrated through the central portion of the lateral section of the unit 13. And column reinforcing bars 42 are arranged around the pipe 41 and auxiliary forms 43 of steel plate are disposed in a plurality of gaps between columns around the intercolumn region. Next, the forms 43 faced with each other are connected by joint bars 44 and the bars 44 are welded to reinforcing ribs 45 of steel bar which are welded to the forms 43. Consequently, the quality is improved and construction schedule and cost can be greatly reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillar formwork structure for a unit building suitable for constructing a high-rise unit building having a reinforced concrete structure or a steel frame reinforced concrete structure.

[0002]

2. Description of the Related Art Conventionally, as a unit building having a reinforcing bar or a steel frame reinforced concrete structure, there is one described in JP-B-55-14217. This unit building is constructed by repeating the steps of suspending and installing reinforcing bars in the region between the side walls of adjacently arranged building units and then placing concrete in the region between the side walls over each floor.

[0003]

However, in the prior art, it is necessary to effectively dispose the concrete wall in terms of structural strength, which becomes a plan constraint for the internal space of the building.

Therefore, when constructing a unit building having a reinforced concrete structure or a steel frame reinforced concrete structure, concrete columns or concrete beams are laid in the inter-column area or the inter-beam area of adjacent building units in order to increase the degree of freedom in planning the internal space of the building. , It is conceivable to secure the structural strength with these concrete columns and beams.

At this time, in order to construct a waste formwork for placing concrete in the inter-pillar region of adjacent building units, it is conceivable to install the formwork in a plurality of post gaps around the inter-pillar region. ..

However, the lateral pressure W applied to the formwork when placing a concrete column is, for example, a placing height of 3.7 m and a placing speed.
At 10 m / hr or less, W = 6.77 t / m ² , and reinforcement against this lateral pressure is required. However, the general formwork reinforcement method is
It seems that the outer periphery of the mold is surrounded and held by the clamp means, and there are the following problems.

It is necessary to secure an installation space for the clamp means around the pillar, which is a constraint on the construction procedure. The number of construction man-hours at the site increases, the factory production range decreases, and productivity is impeded.

According to the present invention, when concrete columns are cast in the inter-column region of adjacent building units to construct a unit building having a reinforcing bar or a steel frame reinforced concrete structure, the workability of the column formwork is improved and the productivity is improved. The purpose is to do.

[0009]

The present invention according to claim 1 is constructed by horizontally and vertically arranging building units composed of a box-shaped frame structure in which columns, floor beams and ceiling beams are joined. A pillar for a unit building in which a formwork is installed in a plurality of pillar gaps around an inter-pillar area of an adjacent building unit, and the formwork forms a waste formwork for placing concrete in the inter-pillar area. A formwork structure, in which a plurality of formwork around the inter-column region is
It is designed to be connected to each other with a joint material.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, the joint material constitutes a column bar.

[0011]

According to the present invention, there are the following actions. An integral part is made by connecting a plurality of formwork with a joining material. The lateral pressure applied to the formwork when placing concrete columns is supported by the tensile strength of the joint material.

By simply setting the above-mentioned integrated formwork in the inter-column region, it is not necessary to reinforce the formwork on site and it is not necessary to secure a space for reinforcement around the columns. There are no restrictions on the construction procedure and the workability is good.

[0013] Formwork reinforcement can be produced in a factory and productivity can be improved. By using the column rebar as a joint material that connects a plurality of forms, the form and the column rebar can be joined at the factory. Therefore, as compared with the case where the column reinforcement is set in a narrow space in the column form, the column reinforcement is set surely and easily at a predetermined position in the formwork, and the column reinforcement is set around the predetermined position. Stable cover thickness can be secured and workability and productivity can be improved.

Therefore, according to the present invention, due to each of the above items (1) to (3), when constructing a high-rise unit building, the quality can be improved and the construction period and the construction cost can be greatly reduced.

[0015]

EXAMPLE FIG. 1 is a schematic diagram showing a construction procedure of a high-rise unit building, FIG. 2 is a schematic diagram showing an inner unit, FIG. 3 is a schematic diagram showing an outer unit, FIG. 4 is a schematic diagram showing a column unit, and FIG. Is a schematic diagram showing a girder unit, FIG. 6 is a schematic diagram showing a column-beam joining unit, and FIG. 7 is a plan view showing a unit arrangement state of a high-rise unit building.

The unit building 10 is shown in FIGS. 1 (A) to 1 (E).
As shown in the figure, on the foundation, as a plurality of building units,
The inner unit 11 forming the interior space of the building and the outer unit 12 forming the outer peripheral portion of the building are adjacently arranged in the horizontal and vertical directions. And the unit building 10
As described later in detail, the adjacent inner units 1
1. The column unit 13 arranged in the inter-column region of the outer unit 12, the girder unit 14 arranged in the inter-beam region, the column unit 13 and the girder unit 14.
By placing concrete on each of the beam-column joining units 15 arranged in the intersecting region, the RC rigid frame including the concrete columns 13A and the concrete columns 14A is configured.

The inner unit 11 is shown in FIG.
As shown in (E), four steel plate columns 21 and four steel plate floor beams 2 joined to the lower ends of the columns 21 by bolts 22.
3 and 4 which are joined to the upper ends of the pillars 21 by bolts 4
It is a box-shaped frame body configured by including a steel plate ceiling beam 25 of a book. In addition, the inner unit 11 is carried into the construction site after the floor slab 26, the floor base 27, the ceiling joist 28, the ceiling board 29, the interior of the water supply / drainage, the photothermal wiring, the piping communication equipment, etc. are applied in the factory. Installed.

The outer unit 12 is, as shown in FIG.
It is a skeleton body having a steel plate column 31 and a steel plate beam 32, and is exteriorized such as an outer wall 33 and an opening 34 in a factory, and then carried into a construction site and installed.

Here, the columns 21 and 31 of the inner unit 11 and the outer unit 12 are formed by L-shaped cross-section members which are concave with respect to the inter-column region. Both ends of the L-shaped cross sections of the columns 21 and 31 are provided with bending engaging portions 21A that can engage with both-end bending engaging portions 43A of an auxiliary mold 43 of the column unit 13 described later.

The column unit 13 is shown in FIG.
As shown in (B), a pipe 41 made of steel pipe that penetrates through the central portion of the cross section is provided, and column reinforcements 42 that allow concrete to be placed are provided around the pipe 41. Also,
The column unit 13 includes the adjacent inner units 11 and
The outer unit 12 is provided with a steel plate auxiliary mold 43 installed in a plurality of pillar gaps around the inter-columnar region, and the opposing auxiliary molds 43, 43 are connected to each other by a splice 44. The joint bar 44 is welded to a steel bar reinforcing rib 45 which is welded to each auxiliary form 43.

Here, the column arrangement 42 of the column unit 13
Is a column main bar 46 extending in the column longitudinal direction, a reinforcing bar 47 arranged so as to surround each column main bar 46, and the above-mentioned joint bar 4.
4 and. The auxiliary mold 43 is provided with bending engaging portions 43A at both ends so that it can be engaged with the bending engaging portions 21A of the columns 21 and 31.

That is, in the unit building 10, the pillar 2 of the inner unit 11 and the outer unit 12 which are adjacent to each other.
1, 31 and the auxiliary formwork 43 installed in the space between the columns form a scrap formwork for placing the concrete column 13A on the column unit 13.

The girder unit 14 is shown in FIG.
As shown in (B), it is provided with a beam reinforcement 51 capable of placing concrete. Further, the girder unit 14 includes steel plate auxiliary molds 52 and 53 installed in a plurality of beam gaps around the inter-beam regions of the adjacent inner unit 11 and outer unit 12, and the auxiliary molds on the opposite side surfaces are opposed to each other. 5
The two and 52 are connected to each other by a conduit pipe 54, and the auxiliary formwork 53 on the bottom surface is supported by the splice lines 55 of the beam arrangement 51. The auxiliary formwork 52 is the floor beam 2 of the upper floor inner unit 11.
3 and the ceiling beam 25 of the lower inner unit 11 are installed in the beam gap, and the auxiliary formwork 53 is installed in the beam gap of the ceiling beams 25 of the left and right inner units 11. In addition, line pipe 5
4. The joint line 55 is welded to each auxiliary formwork 52, 53.

Here, the beam reinforcement 5 of the girder unit 14
1 is a beam main bar 56 extending in the beam longitudinal direction and each beam main bar 56
It is composed of a reinforcing bar 57 that surrounds the above and the above-mentioned connecting bar 55. The auxiliary form 52 has a bent portion 52A on the ceiling beam 25 of the lower inner unit 11 at the lower end, and a bent portion 52B that supports the floor beam 23 of the upper inner unit 11 at the upper end. Also, the auxiliary formwork 5
3 is provided with bending engaging portions 53A at both ends, and can be engaged with the bending engaging portions 25A of the ceiling beam 25.

That is, in the unit building 10, the floor beams 2 of the inner unit 11 and the outer unit 12 which are adjacent to each other.
3, the ceiling beam 25, the beam 32, and the auxiliary formwork 52, 53 installed in the beam gap constitute a scrap formwork for placing the concrete beam 14A on the girder unit 14. ..

The column-beam joining unit 15 is shown in FIG.
As shown in (B), a steel pipe intermediate pipe 61 that penetrates through the central portion of the cross section is provided, and a column reinforcement 62 and a beam reinforcement 63 that allow concrete to be placed are provided.

Here, the column reinforcement 6 of the column-beam joining unit 15
2 is a column main bar 64 extending in the column longitudinal direction, and each column main bar 64
And a reinforcing bar 65 arranged so as to surround the. The beam reinforcement 63 of the beam-column joining unit 15 is composed of a beam main reinforcement 66 extending in the beam longitudinal direction and a reinforcing reinforcement 67 arranged so as to surround each beam main reinforcement 66.

The inner units 11, which are vertically adjacent to each other,
When the column unit 13 of the outer unit 12 is joined by the beam-column joining unit 15, the pipes 41 of the column units 13 on the upper and lower floors are mutually connected via the pipe 61 of the column-beam joining unit 15 as shown in FIG. 4C. Can communicate. At this time, the upper ends of the pipes 41 and 61 are straight, whereas the lower ends of the pipes 41 and 61 are in the receiving portion 68.
As will be described later, the pipe 41, 61 is less likely to adhere and remain with the concrete to be pumped in the pipe 41, 61,
In addition to the straight shape of the upper end portion of 61, the lower end portion of the pipes 41 and 61 that are easily fitted to the upper end portions of the pipes 41 and 61 on the lower floor side are provided.

The construction method of the unit building 10 will be described below. (1) An inner unit 1 in which a plurality of inner units 11 and outer units 12 are suspended on a foundation to form one layer
1. The outer unit 12 is horizontally adjacently arranged (see FIG. 1A and FIG. 7).

(2) The column unit 13 is arranged so as to be inserted into the inter-column region of the columns 21 and 31 formed of the L-shaped cross-section members of the inner unit 11 and the outer unit 12 which are arranged adjacent to each other (see FIG. 1B). ).

(3) Ceiling beam 2 of inner unit 11 and outer unit 12 in which girder units 14 are arranged adjacent to each other
5 and 32 are arranged in the inter-beam region (see FIG. 1C).

(4) The column-beam joining unit 15 is arranged in the intersection region of the column unit 13 and the girder unit 14.
At this time, the pipe 61 lower end receiving portion 68 of the column-beam joining unit 15 is fitted into the upper straight portion of the pipe 41 of the column unit 13. In addition, the column main bar 46 of the column unit 13 and the column main bar 64 of the column-beam joining unit 15 are welded,
Beam main bar 5 of girder unit 14 joined with a special joint
6 and the beam main reinforcement 66 of the beam-column joining unit 15 are welded and joined by a special joint.

(5) Inner unit 1 constituting the upper layer
1. The outer unit 12 is arranged adjacent to the upper part of the inner unit 11 and the outer unit 12 which are lower layers of the above (1).

(6) Inner units 11 arranged adjacent to each other,
The pillars 21 and 31 of the outer unit 12 and the ceiling beam 2 on the lower floor
5 and 32 and upper floor floor beams 23 and 32 are scrap frames, and auxiliary molds 43, 52 and 53 provided in the column unit 13 and the girder unit 14 are scrap frames, and a column unit for one layer 13 and the girder unit 14 are poured with concrete to form concrete columns 13A and concrete beams 14A. At this time, the pipe 41 of the column unit 13 on the upper and lower floors is connected to the column-beam joining unit 15 of (4) above.
Are connected to each other through a pipe 61 of the pipe, and the concrete is the pipe 41 of the column unit 13 in the lowermost layer.
It is filled from the lower part and is placed around the pipe 41 of the column unit 13 which is the placement floor this time, the girder unit 14, and the beam-column joining unit 15 (see FIG. 1D).

The duct 69 is connected to the conduit pipe 54 provided in the girder unit 14 before or after the concrete pouring in (6) above (see FIG. 1E).

(7) The above steps (1) to (6) are repeated for each floor of the unit building 10. In addition, in the unit building 10, the inner unit 11 and the outer unit 1 that are adjacent to each other
It is not necessary to arrange the column units 13 in all the inter-pillar regions of No. 2, and the column units 13 may not be arranged in some of the inter-pillar regions (inter-pillar 21 inter-regions shown by broken lines in FIG. 7). .. In that case, at the stage of securing the structural strength of each floor by completing the concrete pouring on each floor,
The pillar 21 of the column unit 13 can be removed to obtain a large living room space or the like. The pillar 21 can be removed by removing the bolts 22 and 24 from the joint between the floor beam 23 and the ceiling beam 25.

In addition, in the unit building 10, it is not essential to place concrete for each floor, and the column unit 13 and the girder unit 14 for a plurality of floors (all floors may be used). , It is also possible to place concrete at once.

Next, the operation of this embodiment will be described. One in which a plurality of auxiliary molds 43 are connected by a splice 44 is an integral part. The lateral pressure applied to the auxiliary form 43 at the time of placing a concrete column is supported by the tensile strength of the joint bar 44.

By only setting the column unit 13 which constitutes the above-mentioned integrated mold form in the inter-pillar region, it is not necessary to reinforce the auxiliary formwork 43 on site, and the pillar 21 can be formed.
Since there is no need to secure a space for reinforcement around it, there are no restrictions on the construction procedure and workability is good.

The reinforcement of the auxiliary mold 43 can be produced at the factory and the productivity can be improved. By using the columnar bar 42 as the connecting bar 44 that connects the plurality of auxiliary frame 43, the auxiliary frame 43 and the columnar bar 4
2 can be joined at the factory. Therefore, as compared with the case where the column reinforcement 42 is set in a narrow space in the column form, the column reinforcement 42 is reliably and easily set at a predetermined position in the auxiliary form 43, and A predetermined cover thickness can be stably secured around 42, and workability and productivity can be improved.

Therefore, according to the present invention, in each of the above-mentioned items (1) to (3), when the high-rise unit building 10 is constructed, the quality can be improved and the construction period and the construction cost can be greatly shortened.

In the practice of the present invention, the unit building 10 does not necessarily use the beam-column joint unit 15. When the column-beam joining unit 15 is not used, the structure shown in FIG.
As shown in (D), the column reinforcements 42 of the column unit 13 are provided with the column reinforcements 71 that are joined to the column reinforcements 46 of the column units 13 that intersect with each other, and the beam reinforcements 56 of the girder unit 14 that intersect with each other. Beam main bar 72 to be joined
And will be equipped.

[0043]

As described above, according to the present invention, in constructing a unit building having a reinforcing bar or a steel reinforced concrete structure by placing concrete columns in the inter-column region of adjacent building units, the workability of the column formwork is improved. Can be improved and productivity can be improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a construction procedure of a high-rise unit building.

FIG. 2 is a schematic diagram showing an inner unit.

FIG. 3 is a schematic diagram showing an outer unit.

FIG. 4 is a schematic view showing a column unit.

FIG. 5 is a schematic view showing a girder unit.

FIG. 6 is a schematic view showing a beam-column joining unit.

FIG. 7 is a plan view showing a unit arrangement state of a high-rise unit building.

[Explanation of symbols]

 10 Unit Building 11 Inner Unit (Building Unit) 12 Outer Unit (Building Unit) 21, 31 Column 23 Floor Beam 25 Ceiling Beam 32 Beam 42 Column Reinforcement 43 Auxiliary Formwork (Form Frame) 44 Joint Bar (Joining Material)

Claims (2)

[Claims] 1. A building unit comprising a box-shaped frame structure in which columns, floor beams, and ceiling beams are joined is horizontally and vertically arranged adjacent to each other. A pillar formwork structure for a unit building, in which a formwork is installed in a pillar gap, and the formwork constitutes a waste formwork for placing concrete in the pillar-to-column area, and a plurality of molds around the pillar-to-column area are provided. A pillar formwork structure for unit buildings in which the formwork of is connected to each other with a joining material. 2. The pillar formwork structure for a unit building according to claim 1, wherein the joint material constitutes a pillar reinforcement.