JPH03183836A - Fitting for joining column and beam - Google Patents

Abstract

PURPOSE:To reduce number of bolts and make construction work easier by providing a protruding belt laterally on the outer periphery of a square-tube- shaped body, providing a tapped hole and longitudinal groove on part of or total of the four side surfaces, and providing a rib on the inner periphery of the body, surrounding the tapped hole. CONSTITUTION:A protruding belt 3 is provided laterally around the outer periphery of a square-tube-shaped body 2 in such a manner that said belt is protruded from the outer periphery. Then tapped holes 4 are formed through total of or part of four surfaces of the body 2. And ribs 5 are provided on the inner surface of the body 2 where the holes 4 are formed. Longitudinal grooves 9 are formed on the total of or part of four surfaces of the body 2 along the center line of each surface. Further, the upper and lower parts of the body 2 of a joining fitting 1 are inserted into butting parts of upper and lower column 7, 7 of a square pipe. And lateral grooves 6b on the surfaces of end plates 6a are engaged with the protruding belt 3 of the fitting 1 and bolts 8 are screwed into the tapped holes 4 of the fitting 1 through holes of the plate 6 and column 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a column-beam joining fitting for joining a column and a beam.

(Prior art) As a conventional column-beam joint fitting, Japanese Patent Publication No. 49-48217,
Utility Model No. 54-50407, Utility Model No. 57-150108
No., Utility Model Application Publication No. 57-150106, etc. are well known.

However, these joint fittings have a structure in which not only tensile force but also shear force is applied to the bolts used to join the beams, which imposes a heavy burden on the bolts, resulting in an increase in the number of bolts.

(Problems to be Solved by the Invention) It is an object of the present invention to provide a column-beam joining fitting that solves the above-mentioned conventional problems, requires fewer bolts, and is easy to construct.

(Means for Solving the Problems) In order to achieve the above-mentioned objects, the present invention includes: (1) a rectangular cylindrical main body; a projecting band protruding laterally surrounding the entire circumference of the main body; The present invention proposes a column-beam joint that includes screw holes and vertical grooves provided on all or part of four surfaces, and a rear portion that projects from the inner circumferential surface of the main body at the position of the screw holes.

(Function) (+) Since the joining fitting of the present invention has a protruding band, the shearing force from the beam is borne by the projecting band, and the shearing force is not transmitted to the bolt.

(2) Since the joining fitting of the present invention can be attached to a beam, especially at the projecting band, construction becomes easy.

(Example) The column-beam joint fitting of the present invention will be described below according to an example shown in the drawings.

FIGS. 1 and 2 show a 0-column beam joint according to the present invention, and the joint (1) has a rectangular main body (2).

The outer peripheral surface of the main body (2) is provided with a projecting band (3) that laterally surrounds the entire circumference and projects.

On the other hand, screws/holes (4) may be provided on all or part of the four sides of the main body (2).

A rib (5) is provided protruding from the inner peripheral surface of the main body (2) at the position of the screw hole (4).

In other words, in order to ensure strength in the screw and hole (4),
(5) is provided, and as a result, the wall thickness of the main body (2) other than the rib (5) does not need to be particularly thick compared to the wall thickness of the column (7).

On the other hand, vertical grooves (9) are provided in the center line portions of all or some of the four sides of the main body (2).

The functions of the joining metal fitting (1) shown in the above embodiment are as follows.

In other words, as shown in Figure 2, the upper and lower pillars (7) of the square pipe (
7) Fit the upper and lower parts of the main body (2) of the joining fitting (+) onto the matching parts.

At the time of this fitting, the center of the main body (2) should be placed so that the welding heat on the inner surface of the pillar (7) (the raised material on the joining line when the pillar (7) was manufactured from a steel plate) does not interfere with the main body (2). A vertical groove (9) is provided in the line portion.

As a result, the upper and lower pillars (7) (7) are smoothly fitted up to the protrusion (3) of the joining fitting (+).

Next, connect the beam (6〉) to which the end plate (6a) has been explosively welded with the joining fitting (1).
) close to the side.

Next, connect the horizontal groove (6h) on the end surface of the end plate (6a) with the joining metal fitting (1).
) 0 ridge (3).

In other words, during the construction work, the beam (6) is connected to the joining metal fitting (+).
It can be locked in.

Next, the bolt (8) is passed through the hole in the end plate (6a) and the hole in the column (7) and screwed into the screw hole (4) of the joining fitting (1>).

As a result! f! :(1+) will be joined to the joining fitting (1) by the bolt (8).

In the joined state, bending moment and shear force are transmitted from the beam (6).

This bending moment will be borne by Pol I-(8) as a tensile force.

On the other hand, regarding the shear force, from the end plate (6a) to the joining metal fitting (1)
It is transmitted to the ridge (3) and is borne by this.

(Effects of the Invention) The embodiments of the column-beam joining fittings of the present invention are as described above, and the effects thereof are listed below.

(1) Since the joint fitting of the present invention particularly has a protruding band, the shearing force from the beam is borne by this band, and the shearing force is not transmitted to the bolt.

(2) Since the joining fitting of the present invention can lock the throat particularly at the projecting band, construction is facilitated.

[Brief explanation of drawings]

Figure 1 shows the joint fitting of the present invention. 4 Perspective view Figure 2 is a vertical cross-sectional front view of the t'' hole portion of the joining fitting in the same state of use as above 1: Joining fitting 2: Main body 3: Projection band 4: Screw hole 5: Rib 6: Beam: End plate: Horizontal groove 7: Column 8: Porto 9: Vertical groove

Claims (1)

[Claims] 1. A rectangular cylindrical main body, a protruding band extending laterally around the entire circumference of the main body, and screw holes and vertical grooves provided in all or part of the four surfaces of the main body; A column-beam joint fitting consisting of a rib protruding from the inner peripheral surface of the main body at the location of the screw hole.