JP2711031B2 - Construction method of steel frame structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a steel frame structure.

[0002]

2. Description of the Related Art In a conventional construction method of a building having a steel frame structure, columns, beams,
A single member of a small beam is manufactured in a factory, and the single member is first constructed on a plurality of columns by a crane installed at a work site, then a beam is erected between the columns, and then a beam between the opposing beams. After erection of a steel beam for a column with a small beam installed in it, erect it to adjust the verticality of the column, and then weld or screw together the joints of each single member To build a steel frame structure. Next, lay the deck plate for the slab on the beam / beam, arrange the reinforcing bars and pipes on the spot welded deck plate,
Construction of a steel frame structure by casting slab concrete. After the completion of the frame construction work, interior and exterior work, facility work, and the like are performed to construct a building with a steel frame structure.

[0003]

In order to construct a structural frame of a building with a steel frame structure by the above-mentioned conventional construction method, a single member of a column, a beam and a small beam constituting the steel frame structure is constructed on a construction floor. After the erecting is completed, the pillars are erected after the erecting is completed, and the single members are permanently joined by welding or screwing to construct a steel frame structure. Next, lay the deck plate for the slab on the beam / beam, arrange the reinforcing bars and pipes on the spot welded deck plate,
A large number of working steps are required to construct a steel frame structure by casting slab concrete. The construction floor is usually outdoors, and steel work is a high-place work with poor scaffolding. Therefore, there is a problem in that the work is delayed due to weather conditions and safety is secured by the high-place work. Furthermore, there is a problem that it is not suitable for automatic construction of a steel frame structure.

Accordingly, the present invention has been proposed in view of the above-mentioned problems of the prior art. The object of the present invention is to reduce the number of work steps at a construction site by unitizing the steel frame structure. It is an object of the present invention to provide a construction method of a steel frame structure that is capable of eliminating high-place work associated with steel frame work and is suitable for automated construction.

[0005]

In order to achieve the above object, according to the construction method of a steel frame structure according to the present invention, divided columns having a shape obtained by vertically dividing a column into four are arranged at four corners. A divided beam having a shape in which the longitudinal direction of the beam is vertically divided into two equal parts is erected around the circumference of the divided columns, a small beam is erected between the opposing divided beams, and a deck plate for slab is divided between the divided beams and the divided beams. Laying between small beams creates a table-shaped internal structural unit. A portal-shaped outer peripheral structure constructed by constructing an internal steel frame structure by sequentially transporting and linking a large number of units created in this way to the construction floor, and further constructing a dividing beam between one pair of dividing columns The units are connected so as to surround the outer periphery of the inner steel frame structure to form an outer steel frame structure, and then the four connected divided columns are welded to integrate the columns, and the slab deck plate This is to construct a steel frame structure by placing slab concrete with reinforcement and piping on top.

[0006] As a method of integrating the four divided columns, stud bolts are planted at predetermined intervals on the inner surface of the divided columns, and concrete is poured into the interior of the columns connecting the four divided columns. There is something to do.

[0007]

According to the above-mentioned construction method, a large number of table-shaped internal structure units are cut into one layer and vertically cut to the plane dimension of each span in the X and Y directions, and the internal structure units are sequentially transferred to the construction floor. And constructing the inner steel frame structure by connecting and connecting the outer peripheral frame unit of one layer and the gate-shaped outer structure unit having a dimension of one span so as to surround the outer periphery of the inner steel frame structure. The process of building the structure and the welding of the four divided columns that have been joined together to integrate the columns make it possible to unitize the construction of the steel frame structure, reduce the number of work steps at the construction site, and Automated construction becomes possible.

Further, as a method of integrating the four divided columns of the present invention, stud bolts are planted at predetermined intervals on the inner surface of the divided columns, and concrete is struck inside the columns connecting the four divided columns. With this arrangement, the divided columns are integrated via stud bolts fixed to the concrete. Thus, concrete can be put inside the pillar surrounded by the four divided pillars, and the pillar becomes a high strength steel reinforced concrete pillar.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Divided pillars 3a each having a shape obtained by vertically dividing the rectangular pillar 3 into four equal parts are arranged at four corners, and divided beams 4a each having a shape obtained by vertically dividing the longitudinal direction of the beam 4 into two equal parts are erected around the circumference of the divided pillars 3a. , A small beam 5 is erected between the divided beams 4a facing each other, and a deck plate 6 for slab is laid between the divided beam 4a and the small beams 5 so as to cover one layer of the steel frame structure in the X and Y directions. A table-shaped internal structural unit 1 (see FIG. 2), which is vertically cut to a plane dimension of each span, is assembled into an assembly yard b at a construction site.
To form a ground. Next, the grounded internal structural unit 1 is
It is transported to the construction floor by the lifting elevator c provided at the construction site, and further transported to a predetermined position by the horizontal transport means, and the internal structural units 1 are successively connected to construct an internal steel frame structure (see FIG. 1). . In the steel frame structure thus constructed, four divided columns 3a constitute a hollow steel column.

A single-span, one-span, portal-shaped outer peripheral structural unit 2 (see FIG. 3) constructed by arranging a divided beam 4a between a pair of divided columns 3a is assembled at an assembly yard b at a construction site. And the outer peripheral structural unit 2 is lifted by the elevator c.
, Or directly to the outer surface of the skeleton by another lifting machine, and connected to the internal steel frame already constructed to surround the outer periphery of the internal steel frame structure, thereby constructing the outer steel frame structure.

After the steel frame frame structure having a plurality of floors is prepared as described above, the four divided columns 3a constituting the hollow steel column at each position are welded to each other as described above to integrate the columns 3 together. At the same time, the slab concrete 10 was cast on the deck plate 6 for slab by arranging reinforcements 9 and piping (not shown), thereby constructing a steel frame structure frame a (see FIG. 4). In addition, concrete is cast in the hollow part formed by one or two divided columns 3a on the outer peripheral part of the skeleton similarly to the hollow part of the four divided columns. After that, the interior frame work and the facility work are constructed to construct a steel frame structure. Also, in the assembly yard b, the equipment piping and ceiling base, etc., may be attached to the internal structure unit 1, and the outer wall panel 8, etc. may be attached to the outer structure unit 2.

FIGS. 5 to 7 are enlarged views of a main part before concrete is poured into an inner pillar composed of four divided pillars 3a.
A ring plate 3b for beam joining, a diamond plate 3c for preventing deformation of the divided columns, and a stat bolt 4b are provided to integrally connect the three divided columns 3a, and a joint between the divided columns 3a is welded. It is a weld 7. FIG. 8 is a plan sectional view of a column in which four divided columns 3a are integrated with concrete, where 3d is a stud bolt and 12 is concrete. FIG. 9 is a plan cross-sectional view of a column 3 in which the inside of the column 3 surrounded by four divided columns 3a is made of reinforced concrete, and 11 is a column reinforcing bar.

[0013]

As described above, according to the present invention, a table-type internal structural unit which is vertically cut into one plane and one plane in each of the X and Y directions is sequentially conveyed and connected to a construction floor, thereby forming an internal steel frame. A step of constructing a ramen structure, and a step of constructing an outer peripheral steel frame structure by connecting a gate-shaped outer peripheral structural unit of one layer and a dimension of one span so as to surround the outer periphery of the inner steel frame structure; Welding of the four divided pillars and integrating the pillars enables unitization of the steel frame structure and unitization of the steel frame structure to reduce outdoor work processes at the construction site By eliminating high-altitude work associated with steel work, delays in processes due to weather conditions are reduced, and unsafe problems associated with high-altitude work are eliminated. In addition, it enables the automatic construction of a steel frame structure. Further, as a method of integrating the four divided columns of the present invention, a predetermined number of stud bolts are planted on the inner surface of the divided column, and concrete is cast inside the column formed by connecting the four divided columns. Then, the stud bolts are fixed to the concrete, and the divided columns are integrated via the stud bolts fixed to the concrete, thereby reducing the on-site welding work of the columns. Further, the inside of the pillar surrounded by the four divided pillars of the present invention is reinforced with reinforced concrete to form a steel reinforced concrete pillar, thereby increasing the strength of the steel frame structural frame.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a construction method of a steel frame structure according to the present invention.

FIG. 2 is a perspective view of an internal structural unit constituting the steel frame structure of FIG. 1;

FIG. 3 is a layout view of each unit constituting a steel frame unit frame, and a perspective view of a corner unit, an outer peripheral intermediate unit, and an intermediate unit.

FIG. 4 is a plan view showing a steel frame structure frame constructed with the members shown in FIGS. 2 and 3;

FIG. 5 is a plan view showing a main part of an inner pillar portion of FIG. 4;

FIG. 6 is a longitudinal sectional view of an inner pillar portion of FIG. 5;

FIG. 7 is a plan sectional view of an intermediate portion of the internal pillar of FIG. 5;

FIG. 8 is a plan sectional view of a column in which divided columns are integrated with concrete.

FIG. 9 is a plan sectional view of a column in which the inside of a divided column is made of reinforced concrete.

[Explanation of symbols]

 a Steel frame structure frame c Lifting elevator 1 Internal structural unit 2 External structural unit 3 Pillar 3a Split pillar 4 Beam 4a Split beam 12 Concrete

Claims (2)

(57) [Claims] 1. A divided column having a shape obtained by vertically dividing a column into four equal parts is disposed at four corners, and a divided beam having a shape obtained by vertically dividing a longitudinal direction of a beam into two equal parts is erected around the circumference of the divided columns. A step of laying a beam between the divided beams facing each other, laying a slab deck plate between the divided beams and the small beams to create a table-shaped internal structural unit, and A step of constructing an internal steel frame structure by sequentially transporting and linking the same, and a portal-shaped outer structural unit constructed by laying a split beam between two split columns to surround the outer circumference of the internal steel frame structure. To build an outer steel frame structure by connecting them together, and to weld the four divided columns together to integrate the columns, and to arrange reinforcing bars and pipes on the deck plate for slabs to make slab concrete. And the process of casting A method for constructing a steel frame structure with a steel frame structure. 2. In order to integrate the four divided columns, stud bolts are planted at predetermined intervals on the inner surface of the divided columns, and concrete is poured into the interior of the columns connecting the four divided columns. The method for constructing a steel frame structure according to claim 1, wherein: