JPH10169066A - Construction method for steel framed building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the executing ability of a steel framed building by making a support member required till now unnecessary in the case where a deck plate is notched around a column. SOLUTION: In a construction method for a steel framed building, steel column material and steel beam material are assembled to form a steel frame, and a deck plate is spreadly provided to form a separation floor. In this case, a column material 12 is divided every floor, and the upper and lower end parts of each column material 12 are severally provided with flange-shaped base plates 15a, 15b which project outward from the periphery of the column, and the column 12 and a beam 13 are connected through the base plate 15, and on the other hand, the deck plate is supported by a base plate 15b on the lower end side of the column.

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-framed building, and more particularly to a structure for supporting a deck plate at a pillar portion.

[0002]

2. Description of the Related Art Deck plates are generally used to form floors in steel structures. Such a plate is generally used as a discarded formwork of a reinforced concrete slab or as a floor structural material alone, and also for constructing a composite structure with a reinforced concrete slab. Can be shortened. At the time of construction, a panel-shaped plate formed into a predetermined size is bridged between beams, and the plates are joined and laid on the entire surface of each floor.

[0003]

However, when a deck plate is used in a conventional steel structure, the workability of the pillar portion is not always satisfactory.
This is because, when the deck plates are laid on the beam, the pillar portions are not covered by the plate ends 3 as shown in FIG.
This is because a and 3b are cut out, but it is necessary to attach the members 5 and 6 that support these notches.

[0004] That conventional steel structure is generally larger than column width W ₁ in Ryohaba W ₀ as shown in FIG. For this reason,
The plates 3 and 4 which are to be placed on the pillar positions cannot support all the ends only by the beams 2, and the supporting members 5 and 6 (for example, angle materials) need to be newly provided for the portions around the pillars which are separated from the beams. Become. In particular, the standard size of the deck plate is usually used, whereas the span of the beam (distance between columns) varies depending on the building, so it is not uncommon for the seam S of the plate to come exactly at the column position, In such a case, it is necessary to provide members 5 and 6 capable of obtaining sufficient supporting strength similar to a beam.

[0005] Moreover, such joints between columns and beams depend on the scale of the building, but if the total number of floors is large, the number of joints is considerable. In addition, since the mounting work needs to be performed before laying the deck plate that also serves as a work floor at the time of construction, there is a risk of a crash or the like during the work on a high floor.

[0006] Recently, steel frames are increasingly used not only in high-rise buildings but also in middle- and low-rise buildings. In addition to the stable properties of steel materials and the excellent characteristics of lightweight and tough steel structures, the steel frame structure is a type of prefabricated type that assembles factory-produced materials at the site. This is because the construction cost can be reduced. Therefore, if the burden of the on-site work can be further reduced, it is considered that the merit of such a steel structure can be increased and the demand thereof can be further increased.

Accordingly, an object of the present invention is to eliminate the need for a support member for a deck plate around a pillar, and to further improve the workability of a steel structure building.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned objects and to solve the problems, the present invention combines a steel column and a steel beam to form a steel frame, and lays a deck plate on the frame. In the method of constructing a steel-framed building that forms a boundary floor, the column material is provided separately for each floor, and the upper and lower ends of each column material have a flange-like shape projecting outward from the column peripheral surface. A base plate is provided, and the column and the beam are connected by the base plate, and the deck plate is supported by a base plate at the lower end of the column.

[0009]

In the method of constructing a steel-frame building according to the present invention, the pillars are divided into floors, flange-like base plates are provided at the upper and lower ends of each pillar, and the pillars and the beams are connected by the plates. And using the base plate at the bottom of the pillar,
Also supports the deck plate. Therefore, according to the present structure, it is not necessary to newly provide a member such as an angle member around the pillar to support the deck plate, and the work process is omitted, and the workability of the steel frame building (reduction of labor, shortening of construction period, etc.) ) Can be improved.

The specific shape of the base plate will be exemplified later, but any shape may be used as long as it can connect the beam and the column and has a projecting area and strength capable of supporting the deck plate. The floor may be in any form as long as it is a steel-frame construction method using a deck plate. For example, when the deck plate is used as a disposal form of a reinforced concrete slab, when used alone as a floor structural material, when constructing a composite structure with a reinforced concrete slab,
It can be applied to any of them.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 5 show an example of a method for constructing a steel building according to the present invention. As shown in the figure, in this method, a steel frame 11 is formed by combining steel columns 12 and beams 13, and a deck plate (not shown) is laid on the frame 11 to construct a floor. Things
The pillars 12 are provided separately for each floor A to C as shown in FIG. Flange-shaped base plates 15 to 17 are provided at both upper and lower ends of each pillar 12, and the pillar 12 and the beam 13 are connected by the plates to form the building frame 11.

Further, a square steel pipe is used for the column member 12 and an H-shaped steel is used for the beam member 13, and the widths W ₂ and W ₃ of the column 12 and the beam 13 are set to be substantially the same. Further, two pillars 12a and 12b are joined by braces 14a to 14d or a horizontal member 14e, and are preliminarily integrated to form a wall-type structure 20,2.
1 are arranged at appropriate intervals on each floor, thereby increasing the frame strength and rigidity of the entire building.

[0013] The deck plate is installed by bridging between beams as usual, and the plates are joined and laid out according to an appropriate assignment. However, in this method, even if the deck plate is cut off around the pillar, the notch can be placed on the base plate 15b to 17b on the lower end side of the pillar shown in FIGS. It is not necessary to provide a supporting member such as an angle member.

The shape of the base plate is appropriately changed according to the construction site (beam structure), for example, the periphery of the building (FIG. 2), the corner of the building (FIG. 3), and the position inside the building (FIG. 4). Is possible. Also, in the illustrated examples, the corners of the plate projecting from the beam were cut, but as described above, the base plate has a projecting area and strength capable of connecting the beam and the column and supporting the deck plate. Any shape may be used, for example, a square or a rectangle (reference numeral 18 in FIG. 6) as shown in FIG. 6, or another shape. Further, the method of joining the column and the beam is based on the bolt D in the present embodiment, but it is also possible to use welding, rivets or the like, and there is no particular limitation.

FIG. 5 shows an example of a floor and wall structure formed using such a steel frame 11. As shown in the figure, the floor can have a composite slab structure in which a reinforcing bar 25 is arranged on the deck plate 10 and concrete 26 is poured. For example, a cushion floor 27 is stretched as a floor finish material.

On the other hand, as the outer wall material, an existing extruded cement plate 30 (for example, manufactured by Mitsubishi Materials Corporation) can be used. This is because the outer wall material 30 has a hollow portion 30a inside the material, is lightweight, has good sound insulation and heat insulation properties, and has excellent durability. In addition, since various designs are provided, it is possible to produce various appearance designs of the building. Further, by spraying the hard urethane foam 31 on the inner surface of the outer wall material 30, the heat insulation of the outer wall can be further enhanced. For example, a plaster board 32 can be used as the interior material, and the interior wall surface may be finished with a vinyl cloth 33 or the like. still,
The columns 12 and the beams 13 are sprayed with rock wool 34 to prevent internal dew condensation, thereby covering them.

According to the present construction method, since there is no need to attach and support the support members around the pillar, which has been required conventionally, the number of work steps on site is reduced, and labor can be reduced and the construction period can be shortened.
In addition, workability when casting concrete on the deck plate is improved. By placing the base plate (15-18) around the pillar (between the pillar and deck plate)
This is because there is no possibility that concrete will leak to the lower floor during construction.

Further, in the above-described embodiment, since a unique steel frame structure including the wall-type structure 20 is employed, the rigidity of the building is high and the wind resistance and the earthquake resistance are excellent. For example, in the case of a low-rise building of about 3 to 7 stories, sufficient strength can be ensured. Further, since the members to be used (the columns 12, the beams 13, the wall-type structures 20, and the like) can be standardized and factory-produced, the cost can be reduced. Further, since the pillar and the beam can be completely accommodated in the wall with the same width, the pillar does not protrude into the room unlike a conventional steel structure, so that the indoor space can be widely used. Therefore, this method is suitable for constructing an apartment house such as an apartment or a condominium. The method is applicable to various buildings such as individual houses (for example, multiple-family houses), office buildings, and commercial buildings, in addition to apartment houses.

[0019]

As described above, according to the method for constructing a steel-framed building according to the present invention, it is possible to eliminate the need for a support member for the deck plate around the pillar, thereby improving the workability of the steel-framed building. Becomes

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a construction method (building frame) of a steel-frame building according to the present invention.

FIG. 2 is a perspective view showing an example of the present construction method (column-beam joint).

FIG. 3 is a perspective view showing another example of a column-beam joint according to the present method.

FIG. 4 is a perspective view showing still another example of the column-beam joint according to the present method.

FIG. 5 is a perspective sectional view showing an example of a floor and an outer wall structure of a building constructed by the present method.

FIG. 6 is a perspective view showing still another example of a column-beam joint (base plate).

FIG. 7 is a perspective view illustrating a column-beam joint in a conventional steel structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Deck plate 11 Steel frame 12 Column 13 Beam 14a, 14b, 14c, 14d Brace 14e Horizontal member 15-18 Base plate 20, 21 Wall structure 25 Reinforcing steel 26 Concrete 27 Cushion floor 30 Extrusion-formed cement board (outer wall material) 31 Hard urethane foam 32 Plaster board (interior material) 33 Vinyl cloth 34 Rock wool D bolt

Claims (1)

[Claims] 1. A method for constructing a steel frame building in which a steel frame is formed by combining steel columns and steel beams, and a deck plate is laid on the frame to form a floor. While being provided separately for each floor, a flange-shaped base plate that protrudes outward from the pillar peripheral surface is provided at both upper and lower ends of each pillar, and the pillar and the beam are connected by the base plate. A method of constructing a steel-framed building, wherein the deck plate is supported by a base plate on a lower end side.