JPS6263731A - Construction method of multi-staired building body by reinforced concrete flat slab structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for constructing the frame of a multi-story building with a steel reinforced concrete flat slab structure.

(Prior Art) Conventionally, there has been a tosslab structure made only of reinforced concrete as a structure for constructing a large space without a beam, but there are not many examples of this structure. The reason for this is that it has low rigidity against horizontal forces and is not sticky, so it usually needs to be used in conjunction with other earthquake-resistant elements. Furthermore, in order to prevent the floor slab from falling, and to smoothen the transmission of stress between the floor slab and columns, attach a column capital (dollag haunch) or support plate to the root of the floor slab and columns. It is normal to attach large corbels to the slab itself (te~zotoslab).

Therefore, it was not possible to obtain a completely flat space with the conventional flat slab structure using only reinforced concrete.Also, when building multiple floors, the cross section of the reinforced concrete columns would be large and large. In terms of space, this is actually a disadvantage, and in the end it is only suitable for one-story or several-story buildings.

(Problems to be Solved by the Invention) The present invention was made for the purpose of solving the above-mentioned problems of the conventional art. The purpose of this study is to provide a method for constructing the framework of multi-story buildings.

(Means for solving the problem) As a means for solving the problem, the present invention provides the following:
H-beams having a predetermined length are welded perpendicularly to the steel column in both orthogonal directions for each floor of a steel column having a length of a story or several stories, and a beam is provided. After erecting steel columns at predetermined intervals, the beams are horizontally connected with H-shaped steel beams, and then reinforced concrete is cast in place to cover the beams and the H-shaped steel beams. The gist is that the slab was poured.

(Example) Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in the drawings.

First, as shown in Fig. 1, H-beams having a predetermined length for each floor of a square steel pipe column 1 are installed in both orthogonal directions as steel columns having a length of 1 to 3 floors (1 section), and A beam (hereinafter referred to as a beam) is welded vertically to column 1.

2. Then, the rectangular steel pipe columns 1 on which the above-mentioned lifting beams 2 are arranged are erected at predetermined intervals. Next, as shown in Fig. 2, the opposing support beams 2 are
(See FIG. 3), the splint 4 is connected to the high-strength bolt 5. In addition, the vertical connection of the square steel pipe column 1 is carried out at the base part 8 by the pace grating 6 and the anchor port 7 at the lowest layer, as shown in FIGS. 4(a) and 4(b).
In the intermediate layer, as shown in FIG. Incidentally, each time the connection between the H-shaped steel beams 3 at each node of the square steel pipe columns 1 connected in the vertical direction is completed, and before connecting the square steel tube columns 1 at the next node, distortions, etc. are corrected. After connecting the square steel pipe columns 1 to the desired floor, as shown in FIGS.
1. Stara! 12 is arranged, and the inter-pillar zone part 13
[Slab reinforcement] 4. After arranging the formwork supporting metal fittings 15 and the waste formwork/ceiling finishing ground/channel 17 with built-in heat insulating material 16 such as rock wool, cast-in-place concrete is poured and the floor is finished. A slab 18 is formed. Then, a flat floor slab 18 is formed for each floor in the same manner as described above to construct the frame of a multi-story building of desired floors.

At this time, by using the waste molding/ceiling finishing base/senel 17 for the inter-column band portion 13, it is possible to make the inter-column band portion 13 of the floor slab 18 lighter and thinner.

In addition, as shown in FIG. 7, by placing flint 19 between the orthogonal corrugated beams 2, a steel frame consisting of square steel pipe columns 1, corrugated beams 2, and H-shaped steel beams 3 can be constructed. Planar rigidity and the role of the floor slab 18 as a dowel can be further strengthened.

Furthermore, as shown in FIG.
A fireproof structure can also be provided by attaching a fireproof covering material 20 such as LC plate or Keikal plate.

In the above embodiment, the square steel pipe column 1 was used as the steel column, but as shown in FIGS. 9(a), (b), and (c), K,
Round steel pipe 21. H-shaped steel 22 and H-shaped steel cross assembly type 2
It is also possible to use 3 etc.

(Effect of the invention) As explained above, according to the construction method of the present invention,
The 7-lacto slab structure with a built-in steel frame made of H-beams has high structural rigidity and tenacity, and can form completely flat slabs without column heads or support plates, making it possible to form only slabs and columns without beam shapes. It is possible to construct multi-storey buildings consisting of.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view showing a composite steel frame member consisting of square steel pipe columns and corrugated beams constructed by the construction method of the present invention; Fig. 3 is a perspective view of the H-beam used in this construction method, and Fig. 4 (a) is a square steel pipe column constructed by the same construction method. 4(B) is a cross-sectional view of the column base, FIG. 4(C) is a schematic diagram showing the upper and lower joints of the same square steel pipe column,
Figure 5 is a vertical cross-sectional view showing a floor slab constructed using the same construction method, Figure 6 is a perspective view showing the main parts of the frame structure constructed using the same construction method, and Figure 7 is a square steel pipe constructed using the same construction method. Figure 8 is a cross-sectional view showing the state in which firewood has been installed on columns and corrugated beams, Figure 8 is a cross-sectional view showing the state in which fire-resistant covering material has been attached to square steel pipe columns constructed using the same construction method, and Figure 9 ( stomach)
, (b), and (c) are all cross-sectional views showing steel columns according to other embodiments. 1... Square #4 pipe column, 2... Extruded beam, 3... H-shaped steel beam, 18... Floor slab agent Patent attorney Minoru Yamashita, son 4 Figure 5

Claims (2)

[Claims] (1) For each floor of a steel column with a length of one or several floors, a beam is arranged by welding H-beams with a predetermined length in both orthogonal directions and perpendicular to the steel column. After the steel columns on which the beams are installed are erected at predetermined intervals, the distance between the beams is
A frame of a multi-story building with a steel reinforced concrete flat slab structure, characterized in that the beams are horizontally connected by a shaped steel beam, and then a cast-in-place reinforced concrete flat slab is poured to cover the beam and the H-shaped steel beam. Construction method. (2) The method for constructing a frame of a multi-story building with a steel reinforced concrete flat slab structure according to claim 1, wherein the steel column is a square steel pipe column.