JPH04106240A - Joint structure of concrete post in steel pipe - Google Patents

Abstract

PURPOSE:To securely transfer a shearing force from a beam to concrete, by jointing a cylindrical member, having the same external diameter as upper and lower steel pipe posts and a thick thickness, at the fitting part of the beam and filling concrete within the inside. CONSTITUTION:A cylindrical member 2 with the same external diameter as a steel pipe post and a thick thickness is jointed at the fitting part to beams of upper and lower steel pipe posts 1a, 1b with round or square forms. Next, concrete 3 is stuffed in the steel pipe to form a concrete post with a steel pipe. In this way, the shearing force from the beam 5 is securely transferred to the concrete 3.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a joint structure between a steel pipe concrete column and a beam.

(Prior Art) Conventionally, methods for joining a beam to a steel pipe concrete column include a method of attaching a stiffener ring to the outside of the column for reinforcement, a method of providing a diaphragm inside the steel pipe, and the like.

However, installing a stiffener ring on the outside of a steel pipe concrete column for reinforcement may not ensure sufficient transmission of beam shear force to the concrete, or the stiffener ring protruding to the outside of the steel pipe column may impede installation of the external wall. It was accompanied by a problem.

Furthermore, the method of providing a diaphragm inside the steel pipe has been accompanied by problems such as difficulty in filling the steel pipe with concrete.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and connects a steel pipe concrete column and a beam by ensuring sufficient transmission of beam shear force to the concrete and making it easy to fill concrete into the m-pipe. The purpose is to provide structure.

(Means for Solving the Problems) In order to achieve the above objects, the present invention provides: 1. A joint cylinder interposed between upper and lower steel pipe columns, and a joint cylinder that is aligned with the outer surface of the pipe column. This proposes a joint structure between a steel pipe concrete column and a beam, which consists of the outer surface of the steel pipe column, the inner surface of the joint cylinder located inward from the inner surface of the steel pipe column, and concrete filled in the steel pipe column or the joint cylinder. .

(Function) (1) Since the joint structure of the present invention is located inward from the inner surface of the joint cylinder or the inner surface of the steel pipe column, the shear force from the beam is sufficiently transmitted to the concrete.

(2) In the joint structure of the present invention, the inner diameter of the inner surface of the joint cylinder is not significantly reduced, so that it does not interfere with concrete filling.

(3) In the joint structure of the present invention, in particular, the outer surface of the joint cylinder is matched with the outer surface of the steel pipe column, so that attachment of the outer wall is not hindered.

(Example) The joint structure of a steel pipe concrete column and a beam according to the present invention will be described below according to an example shown in the drawings.

FIG. 1 shows a joint structure of the present invention, which has a rectangular shape,
It has a joint cylinder (2) interposed between upper and lower round steel pipe columns (1a) (lb).

The outer surface of the joint cylinder (2) is connected to the upper and lower steel pipe columns (Ia) (lb
) is matched with the outer surface of

On the other hand, the inner surface of the joint cylinder (2) is the upper and lower steel pipe columns (la) (1
Be located inward from the inner surface of b).

The upper and lower steel pipe columns (la) (lb) and the joint cylinder (2) are filled with concrete (3).

In the above state, the shear force from the beam (5) is applied to the joint cylinder (2).
It is transmitted to

However, the inner surface of the joint cylinder (2) is the upper and lower steel pipe columns (Ia).
Since it is located inward from the inner surface of (Ib), shear force is reliably transmitted from the joint cylinder (2) to the concrete (3).

FIG. 2 shows another joint structure of the present invention, in which reinforcing bars (6) of different diameters are welded and fixed to the inner surface of the joint cylinder (2).

This makes the transmission of shear force from the joint cylinder (2) to the concrete (3) more reliable.

FIG. 3 shows another joint structure of the present invention, in which a stud (7) is welded and fixed to the inner surface of the joint cylinder (2) to ensure the transmission of shear force.

(Effects of the Invention) The embodiments of the steel pipe concrete column and beam joint structure of the present invention are as described above, and the effects thereof are listed below.

(1) Since the joint structure of the present invention is located inward from the inner surface of the joint cylinder or the inner surface of the steel pipe column, the shear force from the beam is sufficiently transmitted to the concrete.

(2) In the joint structure of the present invention, the inner diameter of the inner surface of the joint cylinder is not significantly reduced, so that it does not interfere with cosiclete filling.

(3) The joint structure of the present invention is particularly suitable for the outer surface of the joint cylinder! Since it matches the outer surface of the steel pipe column, installation of the outer wall is not obstructed.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional front view of the main part of the joint structure of the present invention; FIGS. 2 and 3 are cross-sectional front views of the main part of the same and other joint structures; Concrete 5: Beam 6: Different diameter reinforcing bar 7: Stat applicant Daiwa House Industry Co., Ltd.

Claims (1)

[Claims] 1. A joint cylinder interposed between the upper and lower steel pipe columns, an outer surface of the joint cylinder that matches the outer surface of the steel pipe column, and an inner surface of the joint cylinder that is located inward from the inner surface of the steel pipe column. and concrete filled in the steel pipe column or joint cylinder, a joint structure of a steel pipe concrete column and a beam.