JP2015145566A - Construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure structure safety compatibly with shortening a construction period by performing integral construction of a structure, facilities and finishing for completing work from disassembly to new installation within an extremely short period by constituting a column as a precast concrete column and constituting a floor as a floor unit to be defined as a beam in addition to simplifying a joint part by double bonding the beams to one column, and by rationally bonding the floor unit to the column.SOLUTION: Two floor units 2 with a frame material of a beam are connected to one precast concrete column 1. The floor unit includes an underfloor facility, an illumination, finishing and a ceiling hanging material.

Description

  The present invention relates to a building construction method that enables integrated construction of structures, facilities, and finishes, for example, when a school is to be rebuilt, from dismantling to new construction in a very short period of time.

The following patent documents are related to a method of joining a reinforced concrete (RC) column and a double beam for the purpose of simplifying the joining of the column and the beam and saving labor.
JP-A-63-251542 Japanese Utility Model Publication No. 4-134303

  Patent Document 1 is characterized in that a column is sandwiched between beam members positioned facing each other in the width direction of the beam steel frame.

  In Patent Document 2, the SRC column or the joint between the RC column and the steel beam is configured so that the concrete can be placed easily and the concrete can be stored well. The double beam is joined to the column in a state where an SRC (steel reinforced concrete) column B is sandwiched between the two channel steels.

  And the joining method of these patent documents 1 and patent documents 2 embeds a stat bolt and a gusset plate in a pillar, and embeds a stat bolt attached to a beam in a pillar. In both cases, the pillar is intended for cast-in-place concrete, which is effective for saving on-site work.

  As in Patent Document 1 and Patent Document 2, simply shortening the joint portion by simply joining the beam to one column in a double manner does not shorten the construction period. Moreover, in patent document 1 and patent document 2, a pillar is built with cast-in-place concrete, and the technique of simplifying a process by using a pillar as precast concrete is not incorporated.

  The object of the present invention is to eliminate the inconvenience of the conventional example, and to simplify the joint by joining the beam double to one column. In addition, the column is a precast concrete column, and the floor is By constructing it as a beam floor unit and rationally connecting this floor unit to a pillar, it is possible to integrate the structure, equipment, and finish for dismantling to new installation in an extremely short period of time. The object is to provide a construction method that can ensure both safety and shorten the construction period.

  In order to achieve the above object, the gist of the present invention according to claim 1 is to connect two floor units whose frame members are beams to one precast concrete column.

  According to the first aspect of the present invention, a span beam and a beam beam are assembled in a frame shape as a floor unit, and the floor unit is hung on a precast concrete column installed in the field. The unit is stable because it is installed across four pillars.

  Further, if the column span is 3.0 m, the floor unit has a width of 2.4 m and can be transported by being stacked in a truck.

  In construction, cast-in-place concrete is only slab topcon, and on-site installation is only bolted at the beam-column joint, so it is not affected by the weather. In addition, it is possible to manufacture products other than slabs at prefabricated factories and steel frame hubs without complicated arrangements, and ensuring quality is easy.

  The gist of the present invention described in claim 2 is that the floor unit includes underfloor equipment, lighting, finishing, and ceiling suspension.

  According to the present invention of claim 2, the floor unit is installed in advance under floor equipment, lighting, finishing, ceiling suspension, and this floor unit is hung on a precast concrete pillar installed in the field, Contributes to speed.

  The gist of the present invention described in claim 3 is that the frame member is a steel beam and is connected by a connection block installed at a precast concrete column end.

  According to the third aspect of the present invention, the steel beam in the span direction and the steel beam in the row direction are assembled on the frame as a floor unit, the deck plate on the frame, the equipment / lighting in the unit, and the ceiling below in advance. Install and hang this floor unit on precast concrete pillars installed in the field.

  A joint block will be installed in the place between the floor units on the pillar. The floor unit and the joint block are joined by high tension bolts. A precast concrete column is installed on it, and threaded column reinforcement is joined and integrated with these steel frames and nuts.

  The gist of the present invention described in claim 4 is that the frame member is a steel beam, and is bolted to a plate protruding from the column.

  According to the fourth aspect of the present invention, the steel beam of the span method and the steel beam of the girder method are assembled as a unit on the frame, and the deck plate, the equipment / lighting in the unit, and the ceiling below are installed in advance. Then, this floor unit is joined with a high tension bolt to a reinforcing plate that is embedded in a precast concrete column installed in the field and jumps out in advance. The stress of the beam in the span direction is transmitted to the column by the torsional resistance of the box composed of the vertical and horizontal reinforcing plates that bounce off. Precast concrete columns can be manufactured and installed in multiple layers.

  The gist of the present invention described in claim 5 is that the frame material in the span direction is a steel beam, and the frame material in the beam direction is a reinforced concrete beam.

  According to this invention of Claim 5, the floor unit which integrated the frame material which is a steel frame beam of a span direction, and the frame material which is a reinforced concrete precast beam (Pca beam) of a girder direction was arrange | positioned between the columns of a precast. Therefore, the stress of the beam in the span direction is transmitted to the column using the torsional resistance of the Pca beam in the row direction and the frictional resistance between the Pca beam and the column.

The joint between the precast pillar and the floor unit is a joint between the precast members, for example,
An integrated joining method using PC steel wire or the like becomes possible. Precast concrete pillars can be manufactured and installed in multiple layers, and because the beam direction is Pca beams, they can also be used as finishing members and do not require fireproof coating.

  As described above, the building construction method of the present invention is a structure and facility for performing from dismantling to new installation in a very short period of time by reasonably joining the floor unit containing facilities, finishing and flooring to the pillar. The integrated construction of finishing is possible, and it is possible to ensure both structural safety and shorten the construction period.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal side view showing a first embodiment of a building construction method of the present invention, FIG. 2 is a floor plan view of the same, FIG. 3 is a front elevation view of the same, 1 in FIG. 1 is a precast concrete column, and 2 is a floor unit. .

  The present invention connects two floor units 2 whose frame material is a beam to one precast concrete column 1, and in this embodiment, the beam as a frame material is a steel frame both in the span direction and in the crosswise direction. It was assumed that it was a large beam 3 (H-500 × 200).

  The floor unit 2 incorporates a suspension material 4 for finishing the ceiling in the beam frame of the steel beam 3 framed in this way, and further includes equipment 5 such as piping, lighting 6, and in some cases a ceiling 7 as a finish. And integrated. An arrow α indicates the deck plate laying direction.

  For example, if the column span is 3.0 m, the floor unit 2 is 2.4 m in width (in the direction of the line), and can be transported by being stacked in a truck. It can be transported. As a result, field work is reduced as much as possible. (Floor unit width 2.5m or less)

  A connecting block 9 made of steel is installed at the upper end of the precast concrete column 1, and the steel beam 3 is bolted to the connecting block 9 with a high tension bolt (HTB) 10 and joined. In the figure, reference numeral 12 denotes a gusset plate for fastening the connection block 9 and the steel beam 3.

  The connection block 9 is a combination of a flange and a web, and is fastened by a screw rebar 11 protruding from the upper end of the precast concrete column 1, and the floor unit 2 is thus connected to one precast concrete via the connection block 9. Two are connected to the pillar 1 and are installed across four pillars.

  After the floor unit 2 is installed, a partition wall 26 is installed between the precast concrete pillars 1 (see FIG. 1), a deck plate 8 is laid as a flooring material, slab reinforcement is laid, and slab top is cast as cast-in-place concrete. A deck plate slab 13 is constructed by placing a kon.

  As a finish, a sash 21 is attached and an exterior 22 is applied.

  In this embodiment, it is a multi-story construction method and each pillar division, and the building completed in this way is a general earthquake-resistant structure (no seismic isolation), cast-in-place concrete is only slab top-container, field installation is column beam joint It is possible to perform installations that are not affected by the weather by simply tightening the bolts, and without troublesome bar arrangements, it is possible to manufacture parts other than slabs at prefabricated factories and steel hubs, ensuring quality.

  In the connection block 9, the horizontal plate of the flange web performs fixing to the concrete to the precast concrete column 1, and the vertical plate further plays a role of increasing torsional resistance.

  Regarding the deck plate 8 as a flooring material, in addition to the case where the deck plate 8 is laid in the field as described above, the floor unit 2 can be incorporated in advance when the floor unit 2 is manufactured at the factory.

  In that case, laying only the deck plate 8 and carrying it to the site, then placing slab reinforcement and slab concrete, or incorporating the flooring after placing concrete as a PC slab in advance at the factory Alternatively, it is possible to select variously by incorporating a half PC floor board as a compromise and completing it on site.

  FIGS. 7-12 shows 2nd Embodiment of this invention, The precast concrete pillar 1 is the thing of the length for several floors (1-3 floors), and pillar advance installation is possible.

  The precast concrete column 1 was provided with a beam-to-column joint 14, and a plate formed by a horizontal reinforcing plate 15 and a vertical reinforcing plate 16 jumped out from the beam-to-beam joint 14.

  The floor unit 2 is joined to a plate jumped out from the precast concrete pillar 1 by bolting with a high tension bolt (HTB) 10. If necessary, the cut plate assembly material 18 may be added, and the reinforcing plate 17 may be added. The cut plate assembly material 18 is obtained by reinforcing a corresponding portion by welding using a thick plate when the cross-sectional performance is insufficient with normal H-shaped steel, and the reinforcing plate 17 smoothly transmits the beam stress in the direction of the beam to the column. Is.

  Similar to the connection block 9 of the first embodiment, the horizontal plate fixes the precast concrete pillar 1 to the concrete, and the vertical plate further increases the torsional resistance.

  Other processes, (1) pillar installation, (2) floor unit installation, (3) partition wall installation, (4) deck plate installation, (5) slab reinforcement installation, (6) floor top control installation, The same as in the first embodiment.

  As in the first embodiment, the building completed in this way has a general seismic structure (no seismic isolation), cast-in-place concrete is only slab topcon, and installation is only bolted at the column beam joint. Construction that is not influenced by the weather is possible, and there is no complicated arrangement of bars. Other than slabs can be manufactured at prefabricated factories and steel hubs, ensuring quality.

  FIGS. 13 to 18 show a third embodiment of the present invention. The frame material constituting the floor unit 2 is that the frame material in the span direction is a steel beam 3 as described in the first and second embodiments. Although it is the same as that of the embodiment, the frame material in the column direction is assumed to be the precast concrete girder 20.

  Similar to the second embodiment, the precast concrete pillar 1 has a length corresponding to a plurality of floors (for the first to third floors) and can be installed in advance.

  FIG. 16 to FIG. 18 show details of the beam-column joint. The steel beam 3 as a frame material constituting the floor unit 2 is inserted into the reinforcing bar 23 at the end of the precast concrete beam 20 and is arranged in a row. The precast concrete girder 20 in the direction is crimped with a PC steel wire 24 that crosses over one end of the precast concrete column 1.

  In the figure, reference numeral 25 denotes a high-strength mortar for joining the precast concrete column 1 and the precast concrete girder 20.

  As for the construction, (1) precast concrete pillar 1 (for the first to third floors) is installed, and (2) floor unit 2 is installed.

  (3) Perform PC grout and crimping, then (4) partition wall installation, (5) deck plate installation, (6) slab reinforcement installation, (7) floor top control installation, the first embodiment, The same as in the first embodiment.

  Thus, in this embodiment, the completed building is of a general seismic structure (no seismic isolation), has a length that can be installed in advance of the pillar (for the first to third floors), The beam in the girder direction is PC-bonded at the site, and the stress of the S-beam is transmitted to the column by the torsion of the orthogonal beam (PC-bonded beam) (transmitted by the frictional force of the crimping surface).

  Cast-in-place concrete can only be manufactured at slab topcons, and other than slabs can be manufactured at prefabricated factories and steel hubs, ensuring quality.

It is a vertical side view which shows 1st Embodiment of the building construction method of this invention. It is a floor plan which shows 1st Embodiment of the building construction method of this invention. It is a vertical front view which shows 1st Embodiment of the building construction method of this invention. It is a top view which shows the detail of the column beam junction which shows 1st Embodiment of the building construction method of this invention. It is a side view which shows the detail of the column beam junction which shows 1st Embodiment of the building construction method of this invention. It is a front view which shows the detail of the column beam junction which shows 1st Embodiment of the building construction method of this invention. It is a vertical side view which shows 2nd Embodiment of the building construction method of this invention. It is a floor plan which shows 2nd Embodiment of the building construction method of this invention. It is a vertical front view which shows 2nd Embodiment of the building construction method of this invention. It is a top view which shows the detail of the column beam junction which shows 2nd Embodiment of the building construction method of this invention. It is a side view which shows the detail of the column beam junction which shows 2nd Embodiment of the building construction method of this invention. It is a front view which shows the detail of the column beam junction which shows 2nd Embodiment of the building construction method of this invention. It is a vertical side view which shows 3rd Embodiment of the building construction method of this invention. It is a floor plan which shows 3rd Embodiment of the building construction method of this invention. It is a vertical front view which shows 3rd Embodiment of the building construction method of this invention. It is a top view which shows the detail of the column beam junction which shows 3rd Embodiment of the building construction method of this invention. It is a side view which shows the detail of the column beam junction which shows 3rd Embodiment of the building construction method of this invention. It is a front view which shows the detail of the column beam junction which shows 3rd Embodiment of the building construction method of this invention.

DESCRIPTION OF SYMBOLS 1 ... Precast concrete pillar 2 ... Floor unit 3 ... Steel beam 4 ... Hanging material 5 ... Equipment 6 ... Lighting 7 ... Ceiling 8 ... Deck plate 9 ... Connection part block 10 ... High tension bolt 11 ... Screw reinforcement 12 ... Gusset plate 13 ... Deck plate slab 14 ... Column beam joint 15 ... Horizontal reinforcement plate 16 ... Vertical reinforcement plate 17 ... Reinforcement plate 18 ... Cut plate assembly material 20 ... Precast concrete large beam 21 ... Sash 22 ... Exterior 23 ... Reinforcement 24 ... PC steel wire 25 ... High-strength mortar 26 ... partition wall

Claims (5)

  A construction method characterized by connecting two floor units whose frame material is a beam to one precast concrete column.   The building construction method according to claim 1, wherein the floor unit includes underfloor equipment, lighting, finishing, and a ceiling suspension material.   The building construction method according to claim 1, wherein the frame member is a steel beam and is connected by a connection block installed at a precast concrete column end.   The building construction method according to claim 1, wherein the frame material is a steel beam and is bolted to a plate jumped out from a precast concrete column.   The building construction method according to claim 1, wherein the frame material in the span direction is a steel frame beam, and the frame material in the beam direction is a precast concrete beam.

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