JPH08291556A - Column-beam joining part structure - Google Patents

Abstract

PURPOSE: To prevent disruption of concrete by restraining deformation of T flanges and a column steel frame when split T metallic materials are used in a column-beam joining part where a column is made of steel frame reinforced concrete. CONSTITUTION: A restraining plate 2 having an opening 21 in a central part is arranged in a height of T flanges 11 of split T metallic materials l around a column steel frame 4. The T flanges 11 of the split T metallic materials l are positioned on the inner peripheral side of the opening 21 of the restraining plate 2, and the T flanges 11 are restrained from the periphery by an inner peripheral surface of the opening 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column-beam joint structure in which a beam steel frame is joined to a column steel frame by using a split T metal member and the column is a steel reinforced concrete structure.

[0002]

2. Description of the Related Art Joining a beam steel frame and a column steel frame using a split T metal object is a split T
It is performed by stacking the metal tea web on the beam steel flange and the tee flange on the pillar steel frame and bolting them. Since the tensile force from the beam steel frame is transmitted to the column steel frame through the bolts that penetrate the tee flange, the tee flange and the flange of the column steel frame form a curved surface as shown in FIG. 6 as the tensile force increases. External deformation is likely to occur.

Therefore, when the column is made of steel reinforced concrete, the deformation of the tee flange causes the concrete covering the tee flange to be destroyed as shown in FIG. 7, so that the column is made of a steel reinforced concrete structure. Cannot use split T hardware.

From the above background, the present invention proposes a joint structure for preventing the destruction of concrete due to the deformation of the tee flange and the column steel frame flange.

[0005]

According to the present invention, a restraint plate having an opening at the center is arranged at the height of a tee flange of a split T metal object around a column steel frame, and the tie flange of the split T metal object is formed by the restraint plate. By preventing the deformation of the flange of the column steel frame, the destruction of the concrete around the tee flange is prevented.

The restraint plate is embedded in the concrete of the pillar, and the inner peripheral surface of the opening is located on the outer peripheral side of the tee flange of the split T metal piece so that the tee flange and the pillar steel frame flange to which it is joined are formed on the tee web. It is restrained from being pulled and deformed. By restraining the deformation of the tee flange and the pillar steel frame flange, the destruction of the concrete around the tee flange due to the deformation is prevented. Since the safety against the destruction of the joint concrete can be obtained, it is possible to use the split T metal object in the joint between the steel reinforced concrete column and the beam steel frame.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention, as shown in FIGS.
The column steel frame 4 and the column steel frame 4 are joined using the split T hardware 1 that is bolted to each, and the restraint plate 2 restrains the deformation of the tee flange 11 of the split T hardware 1 and the accompanying destruction of concrete around the tee flange 11. It is a joint structure between a steel-framed reinforced concrete column and a beam steel frame 3.

In the split T hardware 1, the tee web 12 is overlapped with the flange 31 of the beam steel frame 3, and the tee flange 11 is overlapped with the flange 41 and the web 42 of the column steel frame 4, respectively. It is joined to 4.

As shown in FIG. 4, the restraint plate 2 has an opening 21 at the center thereof through which the column steel frame 4 is inserted, and the column steel frame 4 and the tee flange 11 of the split T-shaped metal 1 are on a plane, the inner peripheral side of the opening 21. Located in. As shown in the figure, when the column main bar 6 interferes with the restraint plate 2, a through hole 22 through which the column main bar 6 is inserted is opened around the opening 21, but the through hole 22 is not necessary if there is no interference. When the restraint plate 2 is assembled with the column main bars 6,
It is preliminarily fixed to the column main bars 6 to the extent that it does not move when pouring concrete.

As shown in FIG. 2, the restraint plate 2 has a height of the tee flange 11 of the split T-shaped metal 1 around the pillar steel frame 4, that is, at least the upper side of the upper flange 31 of the beam steel frame 3 and the lower flange 31. It is arranged on the lower side, and the inner peripheral surface of the opening 21 is located around the tee flange 11. In the embodiment, since the constraining plate 2 has the through holes 22 and the outer circumference has an area enough to cover the cross section of the column, the disposing position of the constraining plate 2 is limited to the upper side and the lower side of the beam steel frame 3. The restraint plate 2 may be arranged above and below the tee web 12 of each split T hardware 1 as long as the size of the restraint plate 2 is such that collision with the web 32 of the beam steel frame 3 does not pose a problem.

The constraining plate 2 is embedded in the concrete of the pillar to be cast later, so that the inner peripheral surface of the opening 21 constrains the tee flange 11 of the split T hardware 1 from the surroundings. The tee flange 11 and the flange 41 of the pillar steel frame 4 to which the tee flange 11 is joined are restrained by the restraint plate 2 so that they are stable against deformation even when a tensile force is applied from the tee web 12 as shown in FIG. The concrete around the tee flange 11 is also stable against partial damage.

[0012]

EFFECTS OF THE INVENTION A restraint plate having an opening in the center is arranged at the height of the tee flange of the split T metal object around the pillar steel frame, and the restraint plate deforms the tee flange of the split T metal object and the flange of the pillar steel frame. Because of the constraining structure, it is possible to prevent partial destruction of the concrete around the tee flange, and it is possible to use split T hardware at the joint between the steel frame reinforced concrete column and the beam steel frame.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state of assembling a restraint plate, a split T hardware, a beam steel frame and a column steel frame.

FIG. 2 is an elevation view showing a column-beam joint portion.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a perspective view showing a restraint plate.

FIG. 5 is an elevational view showing the relationship between the restraint plate and the split T metal piece.

FIG. 6 is an elevational view showing how the tee flange and the column steel frame flange of the split T metal piece are deformed.

FIG. 7 is an elevational view showing how concrete is destroyed due to deformation of a tee flange.

[Explanation of symbols]

1 ... Split T hardware, 11 ... Tee flange, 12 ...
… Tea web, 2… Restraint plate, 21 …… Opening, 22
…… Through hole, 3 …… Beam steel, 31 …… Flange, 32 …… Web, 4 …… Column steel, 41 …… Flange, 42 …… Web,
5 ... Bolt, 6 ... Main pillar.

Claims (1)

[Claims] 1. A joint structure of a steel reinforced concrete column and a beam steel frame, in which a beam steel frame and a column steel frame are joined together by using split T metal parts that are bolted to each other, and a split T metal object around the column steel frame is provided. A restraint plate having an opening at the center is arranged at the height of the tee flange, and the tee flange of the split T metal object is positioned on the inner peripheral side of the opening of the restraint plate and is restrained from the periphery by the inner peripheral surface of the opening. Column / beam joint structure.