JPH059975A - Construction method of steel frame structure - Google Patents

Abstract

(57) [Summary] [Purpose] By reducing the number of outdoor work steps at the construction site and eliminating high-altitude work associated with steel work by unitizing construction of the steel frame frame structure. Furthermore, the construction method of the steel frame rigid frame structure suitable for automated construction is provided. [Structure] A table-shaped internal structure unit 1 cut vertically into plane dimensions of one span each in the X and Y directions for one layer
And the step of constructing an internal steel-framed rigid frame structure by sequentially connecting them to the construction floor, and connecting the portal-shaped peripheral structure unit 2 of a single-span and one-span dimension so as to surround the outer circumference of the internal steel-framed rigid frame structure. And the step of constructing the outer peripheral steel frame structure, and welding the four divided columns 3a connected to each other
The steel frame frame structure a is constructed by integrating the above.

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 rigid frame structure.

[0002]

2. Description of the Related Art In the conventional method of constructing a building with a steel frame structure, the columns, beams, etc. that make up the steel frame structure are
A single member of a beam is manufactured in a factory, and a plurality of columns are first erected by a lifting machine with the same member installed at the work site, then beams are erected between the columns, and then between the beams facing each other. After erection of a beam on the column and erection of the steel frame for one column of the column, erection is performed to adjust the verticality of the column, and the joints of each single member are permanently joined by welding or screwing. Build a steel frame structure. Next, lay a deck plate for slabs on the beams and crossbeams, arrange bars and pipes on the spot-welded deck plate,
A steel frame frame structure is constructed by placing slab concrete. After the building work is completed, interior / exterior work, facility work, etc. are performed to build a building with a steel frame structure.

[0003]

SUMMARY OF THE INVENTION In order to construct a structural frame of a steel-framed structure by the above-mentioned conventional construction method, a single member of a pillar, a beam, and a girder constituting the steel-framed structure is constructed on the construction floor. After erection by temporarily joining one by one and erection of columns after erection is completed, the above single members are permanently joined by welding or screwing to construct a steel frame rigid frame structure. Next, lay a deck plate for slabs on the beams and crossbeams, arrange bars and pipes on the spot-welded deck plate,
Numerous work steps are required to construct a steel frame rigid frame structure by casting slab concrete. The construction floor is usually outdoors and the steel frame work is a work at a high place with a poor footing. Therefore, there are problems of delay in the process due to weather conditions and ensuring safety due to work at a high place. Furthermore, there is a problem that it is not suitable for automated construction of steel frame structure.

Therefore, the present invention has been proposed in view of the problems of the above-mentioned prior art, and the purpose thereof is to reduce the work process at the construction site by unitizing the construction of the steel frame frame structure, The point is to provide a method for constructing a steel-framed ramen structure building 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-mentioned object, according to the method for constructing a steel-framed ramen structure building according to the present invention, divided pillars each having a vertically divided quarter are arranged at four corners. Then, a split beam having a shape obtained by vertically dividing the longitudinal direction of the beam into two equal parts is erected on four circumferences between the split columns, and a beam is installed between the split beams facing each other, and a slab deck plate is provided between the split beam and the split beam. Laying between the beams to create a table-shaped internal structural unit. An internal steel frame structure is constructed by sequentially transporting and connecting a number of units created in this way to the construction floor, and further, a gate-shaped outer peripheral structure constructed by erection of split beams between one and two split columns. The unit is connected so as to surround the outer circumference of the inner steel frame structure to construct the outer steel frame structure, and then the four divided columns that are connected are welded to integrate the columns and the deck plate for the slab. A steel-framed ramen structure building is constructed by laying slab concrete with reinforcing bars and piping on top.

As a method of integrating the four divided pillars, stat bolts are planted on the inner surface of the divided pillars at predetermined intervals, and concrete is placed inside the pillars connecting the four divided pillars. There is something to do.

[0007]

In the above construction method, a step of creating a large number of table-shaped internal structural units vertically cut to the plane dimension of each span in the X and Y directions for one layer, and transferring the internal structural units sequentially to the construction floor And a step of constructing an internal steel frame structure by connecting them, and a portal-shaped external structural unit having a size of one span and one span is connected so as to surround the external periphery of the internal steel frame structure. The process of constructing the structure and the welding of the four divided columns that are connected together to integrate the columns enable the unitized construction of the steel frame frame structure, reducing the work process at the construction site, and Enables automated construction.

Further, as a method of integrating the four divided pillars of the present invention, stat bolts are planted on the inner surface of the divided pillar at a predetermined interval, and concrete is poured into the inside of the pillar formed by connecting the four divided pillars. By installing it, the split pillars are integrated through stat bolts that are fixed to the concrete. In this way, when concrete is put out inside the pillar surrounded by the four divided pillars, a steel-framed reinforced concrete pillar with high strength is obtained.

[0009]

Embodiments of the present invention will be described below with reference to FIGS. The divided pillars 3a having a shape obtained by vertically dividing the square pillar 3 into four equal parts are arranged at the four corners, and the divided beams 4a having a shape obtained by dividing the longitudinal direction of the beam 4 into two equal parts are vertically installed around the four divided pillars 3a. , A beam 5 is installed between the divided beams 4a which face each other, and a slab deck plate 6 is laid between the divided beam 4a and the beam 5, so that one layer of the steel frame structure and in the X and Y directions can be provided. The table-shaped internal structural unit 1 (see FIG. 2) vertically cut to the plane dimension of each span is installed in the assembly yard b at the construction site.
To assemble with. Next, the internal structural unit 1 that has been erected,
It is transported to the construction floor by the lifting elevator c provided at the construction site, further transported to a predetermined position by the horizontal transport means, and the internal structural units 1 are connected one after another to construct an internal steel frame rigid frame structure (see FIG. 1). . In the steel-framed rigid frame structure constructed in this manner, the four divided columns 3a constitute a hollow steel-framed column.

Further, a gate-shaped outer peripheral structural unit 2 (see FIG. 3) of one layer and having one span dimension constructed by erection of divided beams 4a between one pair of divided pillars 3a is erected at an assembly yard b at a construction site. Then, the same peripheral structure unit 2 is lifted by the elevator c
The outer steel frame frame structure is constructed by connecting the inner steel frame frame to the outer surface of the frame directly by another lifting machine, and connecting it to the already constructed inner frame frame so as to surround the outer periphery of the inner frame frame.

After the multi-story steel frame structure is created as described above, the four divided columns 3a forming the hollow steel column at each position are welded to each other and the columns 3 are integrated as described above. At the same time, the reinforcing bar 9 and piping (not shown) were placed on the deck plate 6 for slabs, and the slab concrete 10 was placed therein to construct the steel-framed rigid frame structure a (see FIG. 4). Note that concrete is also placed in the hollow portion formed by one or two divided pillars 3a on the outer peripheral portion of the skeleton as in the hollow portion of the four divided pillars. After this, interior construction work and facility construction work are performed to construct a steel-framed ramen structure building. Further, in the assembly yard b, facility piping, a ceiling substrate, etc. may be attached to the internal structural unit 1, and the outer wall panel 8 etc. may be attached to the peripheral structural unit 2.

FIGS. 5 to 7 are enlarged views of a main part before placing concrete on the inner pillar composed of the four divided pillars 3a.
A ring plate 3b for beam joining, a diamond plate 3c for preventing deformation of the divided pillars, and a stat bolt 4b are provided to integrally connect the three divided pillars 3a, and the joint portion of each divided pillar 3a is welded. It is a welded part 7. FIG. 8 is a plan sectional view of a pillar in which four divided pillars 3a are integrated with concrete. 3d is a stat 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 reinforced concrete, and 11 is a column reinforcing bar.

[0013]

As described above, according to the present invention, the table-shaped internal structural units vertically cut into the plane dimension of one span in each of the X and Y directions for one layer are sequentially conveyed and connected to the construction floor to form the internal steel frame. Connecting the step of constructing a rigid frame structure and the step of constructing an outer peripheral steel frame structure by connecting a portal-shaped outer peripheral structure unit having a size of one span and a span so as to surround the outer periphery of the internal steel frame structure We made it possible to unitize the structure of the steel frame structure by welding the four divided columns that were made into one unit, and reduce the outdoor work process at the construction site by unitizing the structure of the steel frame structure. And, by eliminating the work at heights associated with the steel frame work, the delay in the process due to the weather conditions is reduced, and the unsafety problem associated with work at heights is solved. Moreover, it enables automated construction of steel-framed ramen structures. Further, as a method of integrating the four divided pillars of the present invention, a predetermined number of stat bolts are planted on the inner surface of the divided pillar, and concrete is placed inside the pillar formed by connecting the four divided pillars. Then, by fixing the stat bolts to the concrete and integrating the divided pillars through the stat bolts fixed to the concrete, the field welding work of the pillars can be reduced. 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-framed reinforced concrete pillar, so that the steel frame frame structure can have a high yield strength.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a method for constructing a steel-framed ramen structure building according to the present invention.

FIG. 2 is a perspective view of an internal structural unit forming the steel frame rigid structure body of FIG.

[Fig. 3] Fig. 3 is a layout view of each unit constituting the steel frame rigid structure body, 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 rigid structure body constructed by the members of FIGS. 2 and 3;

5 is a plan view showing a main part of an internal column portion of FIG. 4. FIG.

FIG. 6 is a vertical cross-sectional view of the inner column portion of FIG.

7 is a plan sectional view of an intermediate portion of the inner column of FIG.

FIG. 8 is a plan sectional view of a pillar in which a divided pillar is integrated with concrete.

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

[Explanation of symbols]

a Steel frame structure frame c Lift elevator 1 Internal structure unit 2 External structure unit Three pillars 3a Dividing pillar 4 beams 4a split beam 12 concrete

Claims (2)

[Claims] 1. A vertical dividing column is divided into four equal parts, and dividing columns are arranged at four corners, and a longitudinal beam is divided into two equal dividing beams. A step of constructing a table-shaped internal structural unit by installing a beam between the divided beams facing each other and laying a deck plate for a slab between the divided beam and the beam, and a plurality of created internal structural units on the construction floor. A step of constructing an internal steel frame structure by sequentially transporting and connecting to each other, and a gate-shaped peripheral structure unit constructed by constructing a split beam between a pair of split pillars surrounds the outer periphery of the internal steel frame structure. And the process of constructing the outer peripheral steel frame structure by welding, and connecting the four divided columns that have been joined together to integrate the columns, and at the same time, arrange the bars and pipes on the deck plate for slabs to make slab concrete. And the process of placing A method for constructing a steel-framed ramen structure, characterized by constructing a steel-framed frame structure with. 2. In order to integrate the four divided pillars, stat bolts are planted at predetermined intervals on the inner surface of the divided pillars, and concrete is placed inside the pillars connecting the four divided pillars. The method for constructing a steel-framed ramen structure building according to claim 1.