JP7410697B2 - Construction method - Google Patents

Description

The present invention relates to a construction method for constructing a frame consisting of columns and beams.

On the outer periphery of the building during construction work, after erecting the outer peripheral columns, a frame is constructed in which multiple outer peripheral columns are connected by outer peripheral beams by joining outer peripheral beams on the left and right sides of the outer peripheral columns. To prevent welding sparks, bolts, etc. from scattering, a scattering prevention film such as a vertical net is attached to the outside of the frame to prevent scattering.

Japanese Patent Application Publication No. 2000-160827

However, it cannot be said that welding sparks, bolts, etc. will not be scattered even when joining the outer peripheral beams on the left and right sides of the outer peripheral column. Incidentally, Patent Document 1 discloses a construction method using a steel frame erection scaffold that also serves as curing and performs scattering curing by being supported by two adjacent outer peripheral columns. There is no description of the relationship between the timing and the timing of joining the outer peripheral beams on the left and right sides of the outer peripheral column.

The present invention has been made in view of the above-mentioned circumstances, and its main object is to provide a construction method that can reliably protect the joint portion between the outer peripheral column and the outer peripheral beam from scattering.

The first characteristic configuration of the present invention is that after the outer peripheral column is erected, and before the outer peripheral beams are connected to the left and right sides of the outer peripheral column, the outer side of the joint portion between the outer peripheral column and the left and right outer peripheral beams is A column-side curing unit having a width in the left and right direction sufficient to cover the column is attached to the outer circumferential column and supported by the outer circumferential column ,
Beam-side curing units arranged on the left and right sides of the column-side curing unit and attached to the outer peripheral beam are provided,
The column-side curing unit is provided with a working floor, and the beam-side curing unit is not provided with a working floor,
The present invention is characterized in that a scattering prevention film is provided that closes the space between the pillar-side curing unit and the beam-side curing unit .

According to this configuration, the column-side curing unit can be supported by the outer circumferential column at a timing before the outer circumferential beams are connected to the left and right sides of the outer circumferential column, and the scattering curing of the joint portion between the outer circumferential column and the left and right outer circumferential beams is ensured. can be done. Moreover, the width of the column side curing unit in the left and right direction is just enough to cover the joint area between one outer peripheral column and the left and right outer peripheral beams, so the column side curing unit can be downsized and installed. Work efficiency can also be improved.
Furthermore, according to this configuration, by providing a beam side curing unit in addition to the column side curing unit, scattering curing can also be performed on the outer peripheral beam. Since the column-side curing unit is equipped with a work floor, the work floor can be used to perform welding of the upper and lower outer peripheral columns, and a column stage dedicated to welding can be made unnecessary. Since the beam side curing unit is not equipped with a work floor, it can be made into a smaller and lighter unit with a smaller amount of protrusion from the outer periphery of the building, and the workability of the installation work can be improved. Then, by closing the gap between the column-side curing unit and the beam-side curing unit, which have different protruding amounts from the building's outer periphery, with the scattering prevention film, scattering curing on the building's outer periphery can be performed more reliably.

A second feature of the present invention is that the width of the pillar-side curing unit in the left-right direction is set symmetrically with respect to the outer peripheral pillar.

According to this configuration, the width of the column side curing unit in the left and right direction is set symmetrically around the outer circumferential column to which it is attached, so that it can be attached to one outer circumferential column in a well-balanced manner. The joint part can be well protected against scattering.

Plan view showing the outer periphery of the building under construction (a) Cross-sectional view taken along the line IIa-IIa in Figure 1, (b) Cross-sectional view taken along the IIb-IIb line in Figure 1 Floor plan showing construction method A perspective view schematically showing the construction method

Embodiments of the construction method according to the present invention will be described based on the drawings.
As shown in FIG. 1, this construction method includes a pillar-side curing unit 10 that is placed outside (neighboring land side) of building B under construction and attached to the outer peripheral pillar 1, and a pillar-side curing unit 10 on the left and right sides of the pillar-side curing unit 10. This construction method uses a beam-side curing unit 20 arranged and attached to the outer peripheral beam 2 to construct the frame of the building B while preventing welding sparks, bolts, etc. from scattering to neighboring areas.

In the illustrated example, the outer peripheral column 1 is configured as a column member extending over multiple levels (three layers in this example) from a square steel pipe, and the outer peripheral beam 2 is configured from H-shaped steel. The frame of the building B is constructed by connecting the outer circumferential beam 2 to a beam bracket 1D made of H-shaped steel integrally formed on the side surface of the joint part of each floor of the outer circumferential column 1 extending over a plurality of floors. The joint portion between the beam bracket 1D of the outer circumferential column 1 and the outer circumferential beam 2 becomes the joint portion 3 between the outer circumferential column 1 and the outer circumferential beam 2.
Below, the construction procedures of the column side curing unit 10, the beam side curing unit 20, and the construction method will be explained.

First, the column side curing unit 10 and the beam side curing unit 20 will be explained.
As shown in FIGS. 1 to 4, the pillar side curing unit 10 is designed to cover the outside of the peripheral pillar 1 for multiple floors (in this example, three floors) corresponding to the height dimension of the peripheral pillar 1. It has a height dimension (see FIG. 2), and a width L in the left-right direction (see FIG. 3(a)) that is sufficient to cover the outside of the joint part 3 between the outer peripheral column 1 and the left and right outer peripheral beams 2. Constructed as a vertically elongated unit.

As shown in FIG. 3(a), the width L in the left-right direction of the pillar-side curing unit 10 is such that when the pillar-side curing unit 10 is attached to the outer peripheral pillar 1, both left and right ends of the pillar-side curing unit 10 are It is set to be disposed on the outer side of the left and right joint parts 3 by a predetermined dimension La in the left and right direction. For example, the predetermined dimension La can be set in consideration of the extra width to more reliably prevent scattering from the joint part 3 to the adjacent land, the work space for performing the joining work of the joint part 3, etc. .

In the illustrated example, the width L in the left-right direction of the column-side curing unit 10 is set to be symmetrical about the outer circumferential column 1, corresponding to the fact that the distance from the outer circumferential column 1 of the left and right joint parts 3 is the same. be done. In addition, when the separation dimensions of the left and right joint parts 3 from the outer peripheral column 1 are different, the left and right joint parts 3 can be set asymmetrically in accordance with the separation dimensions of both the joint parts 3.

As shown in FIGS. 1 and 4, the pillar-side curing unit 10 includes a back-side covering portion 10A that extends in the left-right direction along the outer peripheral surface of the building B, and a back-side covering portion 10A extending from both left and right ends of the back-side covering portion 10A to the building B. It is configured to integrally include left and right side side covering portions 10B extending laterally. The back side covering portion 10A and the left and right side side covering portions 10B cover the entire area of the back side and both left and right side surfaces of the column side unit frame 11, which has a work floor 16 and is assembled into a substantially vertically rectangular parallelepiped shape, with a vertical net or the like. It is constructed by being covered with a scattering prevention film 12 made of a sheet or the like.

As shown in FIGS. 2 and 4, the work floors 16 are provided at a plurality of height positions of the column-side unit frame 11 at pitches corresponding to the floor heights of the building B. By providing the work floor 16 on the column side unit frame 11, the work floor 16 can be used to perform welding of the upper and lower outer peripheral columns 1, thereby eliminating the need for a column stage etc. exclusively for welding. can.

As shown in FIGS. 1, 2, and 4, the column side unit frame 11 includes, for example, a vertical frame 13 made of a highly rigid beam frame, vertical members 14A made of a single pipe, etc., and horizontal members (including handrails). ) 14B, a work floor installation bracket 15, a work floor 16 made of a scaffold board, a pillar connection bracket 17, etc. are assembled. The vertical frame 13 is constructed by connecting a plurality of vertically arranged single pipes arranged in parallel using a plurality of horizontally arranged connecting members or the like.

A plurality of vertical frames 13 (four in this example) are arranged at intervals in the left-right direction on the back side of the column-side unit frame 11, and as shown in FIG. A plurality of work floor installation brackets 15 are attached to each other at intervals in the vertical direction so as to protrude toward the building B side. Then, the work floor 16 is installed across a plurality of work floor installation brackets 15 arranged at the same position in the vertical direction.

Also, as shown in FIGS. 1 and 4, a plurality of column connection brackets 17 protrude toward the building B side at intervals in the vertical direction from each of the two vertical frames 13 on the center side in the left and right direction. Can be installed with. Then, the tips of a pair (two in this example) of pillar connection brackets 17 arranged at the same height in each of a plurality of locations in the vertical direction extend laterally from both left and right sides of the outer peripheral pillar 1. It is fixed to each of the protruding parts 1A of steel or the like to be attached by fixing means such as bolts. In this way, the pillar-side curing unit 10 is attached to the outer peripheral pillar 1 using a plurality of sets of pillar connection brackets 17 at different height positions.

As shown in FIG. 1, the beam side curing unit 20 has a height dimension (not shown) equivalent to that of the column side curing unit 10, and is a pair of pillars that are attached to the adjacent outer peripheral pillars 1 singly or in plurality. It is configured as a vertically long unit having a width in the left-right direction that is sufficient to cover the space between the side curing units 10.

The beam-side curing unit 20 is configured to include a back-side covering portion 20A extending in the left-right direction along the outer peripheral surface of the building B. The backside covering portion 20A is constructed by covering the entire backside of the beam side unit frame 21 assembled in a substantially I-shape in plan view with a scattering prevention film 22 made of a vertical net, sheet, or the like. Since the beam side curing unit 20 is not provided with a work floor, it can be made into a smaller and lighter unit with a smaller amount of protrusion from the outer peripheral surface of the building B, and the workability of the installation work can be improved. .

The beam-side unit frame 21 is constructed by assembling, for example, a vertical frame 23 made of a highly rigid beam frame, a cross member 24 made of a single pipe, etc., a beam connection bracket 25, and the like. The vertical frame 23 is also constructed by connecting a plurality of vertically arranged single pipes arranged in parallel with a plurality of horizontally arranged connecting members or the like.

A plurality of vertical frames 23 (three in this example) are arranged on the back side of the beam-side unit frame 21 at intervals in the left-right direction, and each of the plurality of vertical frames 23 is arranged at intervals in the vertical direction. A plurality of beam connection brackets 25 are attached with gaps. Then, the tips of a set (three in this example) of beam connection brackets 25 arranged at the same position in the vertical direction are attached to the attached parts 2A of steel materials etc. provided on the upper surface of the outer circumferential beam 2 of each floor. They are each fixed with fixing means such as bolts. In this way, the beam-side curing unit 20 is attached to the outer circumferential beam 2 of each floor using a plurality of sets of beam connection brackets 25 at different height positions.

Next, the construction order of the construction method performed using the column side curing unit 10 and the beam side curing unit 20 configured as described above will be explained.

First, the outer peripheral column 1 is erected, and then, as shown in FIG. 4 and FIG. It is attached to the pillar 1 and supported by the outer peripheral pillar 1.

Specifically, as shown in FIG. 3(a), the column-side curing unit 10 is lifted up to the vicinity of the outer peripheral column 1 using a crane or the like, and in that state, the plurality of sets of column-connecting brackets 17 of the column-side curing unit 10 are The tip portions are fixed to each of the attachment portions 1A on both sides of the outer peripheral column 1 using fixing means such as bolts. Further, at a plurality of positions in the vertical direction of the column side curing unit 10, the vertical frame 13 on both ends in the left and right direction, and the upper surface part of the beam bracket 1D fixed by welding or the like to both the left and right sides of the outer peripheral column 1. A connecting material 19 made of a single pipe or the like is attached over the area.
In this way, before the outer peripheral beams 2 are joined to the left and right sides of the outer peripheral column 1, the column side curing unit 10 covers the outside of the joint part 3 between the outer peripheral column 1 and the left and right outer peripheral beams 2. Perform scattering curing to the adjacent land.

Then, in this state, as shown in FIG. 3(b), the outer circumferential beams 2 of each floor are joined to the left and right beam brackets 1D of each floor of the outer circumferential column 1, and the left and right outer circumferential beams 2 are connected to the outer circumferential column 1. . Although not shown in the drawings, for example, a splice plate is placed between the beam bracket 1D and the outer beam 2 with the end surfaces of the beam bracket 1D and the outer beam 2 abutting each other, and the splice plate is connected to the beam bracket 1D. By fixing to each of the outer circumferential beams 2 with fixing means such as bolts, the outer circumferential beams 2 can be connected to the beam brackets 1D of the outer circumferential columns 1.
During this joining work, the column-side curing unit 10 covers the outside of the joint part 3 between the outer peripheral column 1 and the left and right outer peripheral beams 2, thereby reliably preventing bolts etc. from scattering to the adjacent land. be able to.

After connecting the left and right outer peripheral beams 2 to the outer peripheral column 1, as shown in FIG. is changed to the outer peripheral beam 2 on the outer side in the left-right direction. By doing so, the installation state of the pillar-side curing unit 10 can be further stabilized.

As shown in FIG. 1, the beam side curing units 20 are arranged on the left and right sides of the column side curing unit 10, and the beam side curing units 20 are attached to the outer peripheral beam 2 and supported by the outer peripheral beam 2. Specifically, the beam side curing unit 20 is lifted up near the outer peripheral beam 2 by a crane or the like, and in that state, the tips of the plurality of beam connection brackets 25 of the beam side curing unit 20 are connected to the outer peripheral beam 2 of each floor. It is fixed to the attachment site 2A on the upper surface using fixing means such as bolts. Further, a scattering prevention film 30 made of a vertical net, sheet, etc. is applied over the column side curing unit 10 and the beam side curing unit 20 in a state where the gap between the column side curing unit 10 and the beam side curing unit 20 is closed. will be installed to complete the scattering protection on the outer periphery of Building B on the construction work floor.

Thereafter, as the erection work progresses to the upper floors, the column side curing unit 10 and the beam side curing unit 20 are moved (climbed) to the upper floors in the order described above, and the scattered curing on the building work floor is carried out on the pillars. The frame of the building B is completed while appropriately using the side curing unit 10 and the beam side curing unit 20.

[Another embodiment]
Other embodiments of the present invention will be described. Note that the configurations of each embodiment described below are not limited to being applied individually, but can also be applied in combination with the configurations of other embodiments.

In the above-mentioned embodiment, the left and right side side covering portions 10B were provided in response to the provision of the work floor 16 in the column side curing unit 10, but when the work bed 16 is not provided, the side surface side covering portions 10B are provided. The covering portion 10B can be omitted.

1 Peripheral column 2 Peripheral beam 3 Joint part 10 Column side curing unit 20 Beam side curing unit 30 Scattering prevention film

Claims (2)

After the outer peripheral column is erected, and before the outer peripheral beams are connected to the left and right sides of the outer peripheral column, the width in the left and right direction is set to cover the outside of the joint area between the outer peripheral column and the left and right outer peripheral beams. A column-side curing unit having a structure is attached to the outer circumferential column and supported by the outer circumferential column ,
Beam-side curing units arranged on the left and right sides of the column-side curing unit and attached to the outer peripheral beam are provided,
The column-side curing unit is provided with a working floor, and the beam-side curing unit is not provided with a working floor,
A construction method comprising: a scattering prevention film that closes a space between the column-side curing unit and the beam-side curing unit . 2. The construction method according to claim 1, wherein the width of the pillar-side curing unit in the left-right direction is set symmetrically with respect to the outer peripheral pillar.

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