JPH01226945A - Joint structure of column and beam - Google Patents

Abstract

PURPOSE:To facilitate the mutual core match of steel pipe columns and reduce projections to the side of a room interior by arranging the lower stiffener and the upper stiffener of a panel zone respectively to be projected to a pipe internal-section and a pipe external-section, and by connecting beams via the stiffeners. CONSTITUTION:Internal stiffeners 7 as the lower stiffeners of a panel zone 6 are arranged so that main bodies 7c may be projected to the internal sections of steel pipes 9, and external stiffeners 11 as the upper stiffeners are arranged so that main bodies 11c may be projected to the external sections of the steel pipes 9 on the outer peripheral sections of the steel pipes 9. Via the internal stiffeners 7 and the external stiffeners 11, beams 3 are connected.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is applicable to connecting steel beams to steel pipe columns (including steel pipe concrete columns filled with concrete and mortar inside) in panel zones. Regarding the column and beam connection structure used.

(b), Prior Art FIGS. 3 and 4 are plan views of panel zones showing a conventional column-beam connection structure.

Conventionally, the connection of columns and beams in the panel zone was performed using (1) the third
As shown in FIG. A through stiffener structure is known in which the stiffener 5 is formed in a divided manner. In order to properly connect the stiffeners 2.5 to the beams 3, two stiffeners 2.5 are usually installed per -panel zone in a direction perpendicular to the plane of FIGS. 3 and 4.

(C)0 Problem to be Solved by the Invention Although the external stiffener structure of (1) has a simple structure, it has the disadvantage that the stiffener 2 is thick (overhangs) outside the steel pipe column, that is, on the indoor side. The through stiffener structure of 2) is the stiffener 5.
does not protrude significantly outside the steel pipe column 1, but since the two stiffeners 5 (upper and lower) per panel zone penetrate the 111'l column 1, it is difficult to align the steel pipe columns 1.1 above and below the stiffeners 5. However, there is a drawback that the filling properties of concrete and mortar are deteriorated by the stiffener 5 protruding inside the W4 pipe column 1.

In order to eliminate the above-mentioned drawbacks, the present invention provides a column-beam connection structure that has good concrete/mortar filling properties, allows easy alignment of steel pipe columns, and has little overhang toward the indoor side. The purpose is to

(d) Means for solving the problem, that is, the present invention uses an inner stiffener (7) as the lower stiffener of the panel zone (6), and a main body (7c) made of steel v: (
9) The outer stiffener (11) is installed as an upper stiffener, and the main body (11) is installed in a protruding manner inside the steel pipe (9).
11c) is installed in a protruding form on the outside of the steel pipe (9), and connected to the beam (3) via an inner stiffener (7) and an outer stiffener (11).

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

(e) 0 effect With the above configuration, in the present invention, the lower stiffener that is likely to be seen from the indoor side is the inner stiffener (7) that does not protrude to the outside of the steel pipe (9), and can be incorporated into the slab (12). The upper stiffener with high stiffness acts as an outer stiffener (11) that takes into account the filling properties of concrete and mortar.

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

FIG. 1 is a sectional view of a panel zone showing an embodiment of a column-beam connection structure according to the present invention, and FIG. 2 is a plan view of the panel zone.

As shown in Fig. 1, two square cylindrical steel pipes 9.9 are installed at the joint between the w4 pipe column 1 and the beam 3, the so-called panel zone 6, with their ends connected. An inner stiffener 7 is connected as a lower stiffener to the upper end of the #I pipe 9 in the lower part of the figure. As shown in FIG. 2, the inner stiffener 7 has a main body 7c formed entirely in a square plate shape, and a circular concrete flow hole 7a is formed in the center of the main body 7c in FIG. has been done.

Most of the stiffener body 7c of the inner stiffener 7 is a steel pipe 9.
It has a so-called through-stiffener structure in which only its outer edge 7b protrudes outward from the outer periphery 9a of the steel pipe 9, and the beam 3 is formed on the outer edge 7b. A beam material 10 such as H-shaped steel is welded. Furthermore, an outer stiffener 11 as an upper stiffener is connected to m'l'9 at the upper part of FIG. 1 in a form that fits and engages the outer periphery of the steel pipe 9. It has a main body 11C formed in a hexagonal plate shape. Connecting portions 11b to the beams 3 are formed on the outer edge portion 11a of the main body 11c, and the beams 3 are connected to each of the connecting portions 11b in the same manner as the inner stiffener 7.

Since the panel zone 6 etc. have the above configuration, when constructing the steel pipe columns 1 and beams 3, first attach the inner stiffener 7 to the steel pipe 9 in the lower part of FIG. installed in the construction position and then on top of it another steel pipe 9
are connected with the outer stiffener 11 attached. Then, a panel zone 6 consisting of the inner stiffener 7 and the outer stiffener 11 is formed near the joint of the mutually connected steel pipes 9.9, so that the beam 3 is connected to the inner stiffener 7 and the outer stiffener 11, respectively. do.

In this state, concrete mortar (in this specification, "concrete mortar" means "concrete" or "mortar") is placed inside the connected steel pipe 9.9.
The construction of steel pipe column 1 is completed by pouring and pouring. Also, beam 3
Above, a slab 12 is constructed with an outer stiffener 11 incorporated into the slab 12.

(g) 0 Effects of the Invention As explained above, according to the present invention, the inner stiffener 7 is used as the lower stiffener of the panel zone 6, and the main body 7c
is installed in a protruding form inside the steel pipe 9, an outer stiffener 11 is installed as an upper stiffener, and a main body 7C is installed on the outer periphery of the yI pipe 9.
are installed in a manner that protrudes from the steel pipe 9, and are connected to the beam 3 via the inner stiffener 7 and outer stiffener 11, so there is a possibility that the steel pipe 9 will normally be incorporated into the slab 12 and become invisible from the outside. Only the upper stiffener, which is a portion with a high degree of stiffness, is the outer stiffener 11, and the lower stiffener, which is likely to be visible from the outside, is the inner stiffener 7, which is protruded from the inside of the III tube 9. As a result, the protrusion of the stiffener from the indoor side can be significantly reduced compared to the external stiffener structure shown in Fig. 3, and can be suppressed to the same extent as the conventional through-stiffener structure shown in Fig. 4. . Since the steel pipe 9.9 is also connected only through one inner stiffener 7, the steel pt! ! :9.9 alignment is also easier compared to the through stiffener structure. In addition, the inner stiffener 7
Since there is only one stiffener, when pouring concrete or mortar inside the steel pipe 9, the filling performance can be greatly improved compared to a through-stiffener structure in which the two inner stiffeners 5 are provided in an overlapping manner. becomes possible.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a panel zone showing an embodiment of the column-beam connection structure according to the present invention, Fig. 2 is a plan view of the panel zone, and Figs. 3 and 4 are conventional column-beam connection structures. It is a top view of a panel zone showing. 3...Beam 6...Panel zone 7...Inner stiffener 7c, llc...Body 9...Steel pipe 11...Outer stiffener application Person Mitsui Construction Co., Ltd. agent Patent attorney Phase 1) Shinji (and 2 others) Figure 2

Claims (1)

[Claims] Inner screw as bottom stiffener in panel zone Tifuna is installed with the main body protruding inside the steel pipe, Outer stiffener, steel as upper stiffener The main body is installed on the outer periphery of the pipe so that it protrudes outside the steel pipe, These internal stiffeners and external stiffeners A column-beam connection structure constructed by connecting beams.