JPH01226950A - Construction structure of panel zone - Google Patents

Abstract

PURPOSE:To contrive a stiffener not to be projected to the external section of a column, and simplify a mechanism, by providing the inner peripheral surface of a steel pipe with the stiffener, and by connecting a beam directly to the outer peripheral surface of the steel pipe confronted with the position of the set stiffener. CONSTITUTION:A steel pipe column 1 is set in the shape of the steel pipes 2, 2 of cross-sectional areas formed in the shapes of square shells which are vertically connected to each other, and near the connecting section 2a of the steel pipes 2, 2, a panel zone 3 is set. The panel zone 3 is provided with the stiffeners 5, 5 of square plates, and each stiffener 5 is set in a shape welded, on the inner peripheral surface 2b of the steel pipe 2. Through the central section of each stiffener 5, a circular concrete-passing hole 5a is penetration- bored, and to the outer peripheral surface 2c of the steel pipe 2 in accordance with the positions of the arranged stiffeners 5, 5, a beam 6 consisting of the shape steel of the cross-sectional area of H-type and the like is directly connected.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a method for constructing a panel zone connecting a column and a beam in a steel pipe column (including a steel pipe filled with concrete mortar). .

(b), Prior Art Conventionally, in panel zones, stiffeners have been provided inside and outside of steel pipes for the purpose of smooth stress transmission between connected beams. This stiffener is installed on the outer periphery of the steel pipe depending on its installation mode, and there are two types: an outer stiffener type that penetrates the steel pipe itself through the panel zone, and an inner stiffener type that is installed so that the steel pipe is divided.

(C)9 Problems to be Solved by the Invention However, in the case of the outer stiffener type, the stiffener protrudes greatly outside the column, resulting in a disadvantageous appearance, whereas in the case of the inner stiffener type, the stiffener protrudes outside the column. On the other hand, since the stiffener separates the m-tube, there is a drawback that the structure of the panel zone portion becomes complicated.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, the present invention aims to provide a panel zone construction structure that has a simple structure in which the stiffener does not protrude outside the column.

(d) Means for solving the zero problem, that is, the present invention provides a stiffener (5) on the inner peripheral surface (2b) of the steel pipe.
, 5), and the beam (6) is provided with the stiffeners (5, 5).
W4 pipe outer peripheral surface (2c) facing the installed position of 5)
be configured by connecting directly to

Note that numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings. The following r (el
The same applies to the column ``, action''.

(e) 0 effect With the above-described configuration, the beam (6) is directly connected to the steel pipe (2) penetrating the panel zone (3), and the stiffener (5) is connected to the rll\R inner peripheral surface (2b). It acts as if it were only provided.

(f), Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a sectional view showing an embodiment of the construction structure of a panel zone according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a sectional view taken along line I-1 in FIG. 2.

rl! As shown in FIGS. 1 and 2, the pipe column 1 is provided with steel pipes 2.2 each having a cylindrical shape with a square cross section connected in the vertical direction in FIG. A panel zone 3 is provided near the connecting portion 2a of 2.2. As shown in FIG. 2, the panel zone 3 is provided with square plate-shaped stiffeners 5.5.
is provided so as to be welded to the inner peripheral surface 2b of the steel pipe 2. A circular concrete flow hole 5a is drilled through the center of each stiffener in FIG.
．． As shown in FIGS. 1 and 3, a round beam 6 made of H-shaped section steel or the like is directly connected to the outer circumferential surface 2c of the steel pipe 2 corresponding to the position where the steel pipe 2 is provided. A slab 7 of the upper floor is constructed on the upper part of the beam 6 in FIG. It is being

Since the steel pipe column 1 has the above-mentioned configuration, when constructing the steel pipe column 1, first, the inner circumferential surface 2b of the portion corresponding to the panel zone 3 near the connecting portion 2a of the steel pipe 2 is coated with a As shown in FIG. 2, two stiffeners 5.5 each having a concrete flow hole 5a formed therein are welded and installed. The stiffener 5 may be formed by cutting a single steel plate, or may be formed by connecting a plurality of divided plates by welding or the like. When the stiffener 5 is formed from a divided plate, the shape of the concrete flow hole 5a can be changed to a rectangular shape or the like as shown in the imaginary line in FIG.
It should be possible to form it without wasting materials (if the stiffener 5 is cut out from a single board, the board in the concrete distribution hole 5a portion will be discarded as waste material, so there will be no wastage of materials) .

In this way, when the stiffener 5.5 is installed, #
! The pipe 2 is installed at the position where the steel pipe column 1 is to be constructed, and in that state, the beam 6 is directly connected to the steel pipe outer circumferential portion 2C opposite to the position where the stiffener 5.5 is provided, and the upper connection portion of the steel pipe 2 is Connect a new steel pipe 2 to 2a. Furthermore, when concrete and mortar is filled and placed inside the steel pipe 2 as necessary, the placed concrete and mortar will be filled in the steel pipe 2.2 through the concrete distribution hole 5a in good condition, and the steel pipe column will be filled with concrete and mortar. 1 will be constructed. Further, a fireproof coating 9 is provided around the beam 6 and the steel pipe column 1, and a slab 7 constituting the upper floor is placed above the beam 6.

Co., Ltd.0 Effects of the Invention As explained above, according to the present invention, the inner peripheral surface of the steel pipe 2
A stiffener 5.5 is provided on b, and the beam 6 is placed on the steel pipe outer peripheral surface 2C facing the position where the stiffener 5.5 is installed.
Since the stiffener 5 is directly connected to the steel pipe column 1,
It is possible to provide a panel zone construction structure that not only does not protrude to the outer periphery, but also does not have the steel pipe 2 divided by the stiffener 5, has a simple structure, and has a good appearance.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the construction structure of a panel zone according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a cross-sectional view taken along the line II-N of FIG. 2. 2...Steel pipe 2b...Inner circumferential surface 2c...Outer circumferential surface 3...Panel zone 5...Stiffener 6...Beam Applicant Mitsui Construction Co., Ltd. Agent Patent attorney phase 1) Shinji (and 2 others)

Claims (1)

[Scope of Claims] A construction structure of a panel zone, in which a stiffener is provided on the inner circumferential surface of a steel pipe, and a beam is directly connected to the outer circumferential surface of the steel pipe opposite to the position where the stiffener is installed.