JPH0525854A - Joint structure of column and beam - Google Patents

Abstract

PURPOSE:To construct a joint of high structural reliability, with high accuracy of construction and improved efficiency in operation between SRC column and great steel-framed beams. CONSTITUTION:A joint structure consists of a SRC column A in which a steel tubular column 1 is incorporated projectionally from the upper and lower ends and a sprice sleeve 4 is buried in the upper and lower end body 2 and a steel framed large beam B in which a column-crossing PC units C having buried coupler steel tubes 5 and vertical bars 6 piercing the peripheral side are provided on both ends. The coupler steel tubes 5 of the PC units C in the beam B are fitted into the projected-ends of the column 1 in the upper and lower-stair SRC columns, and mortar is packed into the joints between the SRC columns A and the steel framed large beams B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam-column joint structure in a composite structure composed of SRC columns and steel beams.

[0002]

2. Description of the Related Art Conventionally, when joining columns and beams of this type, complicated column-beam joints are machined and joined by high-strength bolts, welding, and the like, and jointed reinforcing bars are laid and joint concrete is placed. Was.

[0003]

The above-mentioned conventional structure requires a great deal of time and labor for constructing the beam-column joint portion, and the reinforcing bars are arranged in a complicated manner at the beam-column joint portion, which significantly impairs workability and requires much labor and labor. There is a problem that it takes time and it is difficult to ensure the accuracy of the joint portion. The present invention has been proposed in view of the problems of the above-mentioned prior art, and it is an object of the present invention to provide a joint structure between an SRC column and a steel frame beam that improves workability and ensures construction accuracy.

[0004]

In order to achieve the above-mentioned object, a beam-column joining structure according to the present invention is constructed such that a steel pipe column is built in such that it projects from the upper and lower end portions, and a splice sleeve is provided on the upper and lower end body. The SRC column in which is embedded, and the column-beam crossing PC unit in which the joint steel pipe is embedded and the longitudinal bars penetrate the outer periphery of the joint steel pipe are steel girders arranged at both ends of the beam steel frame. While fitting the joint steel pipe of the two-column cross beam PC unit in above into the projecting end portion of the steel pipe column in the SRC column in the upper and lower floors, the vertical projecting end portions of the vertical bars in the cross PC unit are connected to the SRC column in the upper and lower floors. It is fitted in a splice sleeve, and mortar is fitted in the joint between each SRC column and the beam-column crossing unit.

[0005]

According to the present invention, as described above, the buried joint steel pipes in the column beam crossing PC unit arranged at both ends of the steel frame girder are connected to the projecting ends of the steel pipe columns built in the SRC columns on the upper and lower floors. By fitting, the steel beams of the SRC columns on the upper and lower floors can be easily and reliably joined to the predetermined positions. At the same time, by fitting the protruding end of the vertical bar penetrating the cross PC unit into a splice sleeve embedded in the concrete frame of the upper and lower SRC columns, the reinforcing bars of the cross PC unit and the upper and lower SRC columns are It is joined.

Further, the steel pipe column built in the SRC column and the joint steel pipe of the beam-column crossing PC unit serve as a guide member when mounting the steel beam, and at the same time reinforce and stiffen the beam-column joint. Is.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An illustrated embodiment in which the present invention is applied to the construction of a composite structure having a frame structure in which SRC columns and steel beams are used together will be described below. A is an SRC column, and the steel pipe column 1 is built in the concrete frame 2 so as to project from the upper and lower ends of the frame 2, and the column main bar 3 is attached to the upper and lower ends of the frame 2.
A splice sleeve 4 for connection is embedded.

[0008] B is a steel frame girder, and the column-beam crossing PC at both ends
The unit C is disposed, the joint steel pipe 5 is embedded in the center of the concrete frame in the unit C, the longitudinal bars 6 are vertically penetrated, and the steel beam-joining beam steel frame 7 is projected from the outer periphery of the concrete frame. There is. Next, the skeleton construction using the pillars and beams will be described.

Along the SRC pillar A at a predetermined interval A ₁ ,
A ₂ , A ₃ ... A _n-1 , A _n , ... (See FIG. 2) In order to simplify the description in the figure, the A
Only _n-1 , A _n are shown. Next, the steel beam G
(Refer to FIG. 3), the joint steel pipes 5 in the column-beam crossover PC unit C at both ends of the steel beam B are connected to the upper end projections of the steel pipe columns 1 in the SRC columns A _n-1 and A _n . And the lower end protruding portion of the vertical streak 6 is attached to each S
Insert the RC columns A _n-1 and A _{n into} the splice sleeve 4,
An intermediate steel beam B ′ is interposed between the steel beam G and the steel beams B attached to the SRC columns A _{n + 1} and A _{n + 2} in the same manner as described above, and the steel beams B ′ are connected to the column beams. It is fastened to the steel beam-joining beam steel frame 7 of the crossover PC unit C via the high-strength bolt 8 (see FIG. 4). This bolt fastening work is performed by a robot.

[0010] Then each SRC Columns A _n-1, A _n on the upper floor of SRC Columns A _'n-1, A' Kenkomi the _n, the lower end projection of steel column 1 in the upper floor pillar steel beam The column beam crossing PC unit C in B is fitted into the joint steel pipe 5 of the PC unit C, and the upper end protruding portion of the vertical line 6 in the PC unit C is located on the upper floor SR
To insert the C pillar _{A 'n-1, A'} n splice sleeve 4 of the injection is performed mortar grout g by robot at the junction of the (see FIG. 5) and then the upper and lower stories each SRC Columns and Steel girders B. (See FIG. 6) Then, the PC is placed on the steel beam B.
Laying the floor D, setting the PC curtain wall E (see FIG. 7), and setting the floor mortar F by the robot (see FIG. 8).
To fill. (See Figure 9)

[0011]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the SRC precast concrete column with the steel tube column and the steel girder can be omitted by omitting the work such as formwork and reinforced concrete work. It can be joined with high precision by chemical construction, and it has been considered extremely difficult to use S.
This is the one that enables the PC construction of the RC structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing a frame structure having a beam-column joint structure according to the present invention.

FIG. 2 is a vertical sectional view showing a pillar erection process.

FIG. 3 is a vertical sectional view showing a steel frame girder mounting step.

FIG. 4 is a vertical cross-sectional view showing a high-strength bolt tightening process of a steel frame girder.

FIG. 5 is a vertical cross-sectional view showing the upper floor pillar erection process.

FIG. 6 is a vertical cross-sectional view showing a step of injecting mortar into a beam-column joint.

FIG. 7 is a vertical sectional view showing a PC floor laying step.

FIG. 8 is a vertical sectional view showing a PC curtain wall mounting step.

FIG. 9 is a vertical sectional view showing a bed mortar filling step.

[Explanation of symbols]

 A SRC column B Steel frame large beam C Column beam crossing PC unit 1 Steel pipe column 2 Concrete frame 3 Column main bar 4 Splice sleeve 5 Joint steel pipe 6 Longitudinal bar 7 Steel beam connecting beam steel frame

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Satoshi Kobayakawa 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd.

Claims (1)

Claim: What is claimed is: 1. A steel pipe column is built in so as to project from the upper and lower ends, and an SRC column in which a splice sleeve is embedded in the upper and lower end skeletons, and a joint steel pipe are embedded in the joint. A column-beam crossover PC unit having vertical bars penetrating the outer circumference of a steel pipe is composed of steel beam girders arranged at both ends of a beam steel frame. While being fitted to the projecting end of the steel pipe column in, the vertical projecting ends of the vertical streaks in the intersecting PC unit are fitted to the splice sleeves of the SRC columns on the upper and lower floors,
A joint structure of column and beam, wherein mortar is filled in a joint portion between each of the SRC columns and the column-beam crossing unit.