JPH04124339A - Column/beam joining method of wedge ring fitting-on type - Google Patents

Abstract

PURPOSE:To joint the beam bracket metals of columns and the joining metal fittings of beams firmly to each other by fixing the beam joining metal fittings at the end sections of the beams, to provide the upper and lower sections of the beam joining metal fittings with wedge-shaped external surfaces, and by fitting metal wedge rings on the wedge-shaped external surfaces, to be heated and to be cooled. CONSTITUTION:The external surfaces of beam bracket metals 5 fixed on columns 4, are fitted with beam joining metal fittings 2 of plurality of beams 1, and the upper and lower sections of the beam joining metal fittings 2 are provided with divided truncated cone wedge-shaped external surfaces 3. Then, on the wedge-shaped external surfaces 3, metallic wedge rings 7 in a heating and diameter-widening state are fitted, and the rings 7 are cooled to be diameter-shrunk and to be pressure-welded. As a result, the beam bracket metals 5 and the beam joining metal fittings 5 of the beams fixed on the columns 4 can be joined to each other easily, quickly, and firmly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a column-beam joining method for joining a pillar and a beam in a building by fitting a mock ring into the joint.

[Conventional technology]

Conventionally, the methods of joining columns and beams are (1) Special public relations system of 1974-
As disclosed in Publication No. 3288, a capital block is interposed between the upper and lower columns, and they are connected by a large number of bolts, and a plurality of joint plates are installed between the joint beam of the column capital block and the end of the beam. (2) As published in Japanese Utility Model Publication No. 51-48414, the entire circumference of the end of the column is fixed by welding to the upper and lower parts of the joint. , and a joining method is known in which the entire circumference of the end of the beam is fixed to the side part of the joined body by welding.

[Problem to be solved by the invention]

In the case of the connection method (1) above, the column capital block and the upper and lower columns are connected with a large number of bolts at the construction site,
In addition, since the joint beams of the column capital blocks and the beams are connected using multiple joint plates and a large number of bolts, assembly and construction time is long. Since it is necessary to drill a large number of bolt insertion holes in the flange, there is a problem that processing is complicated and costs are high.

In addition, in the case of the joining method (2) above, welding equipment is brought to the construction site and the entire circumference of the end of the column is fixed to the joint by welding, and the entire circumference of the end of the beam is fixed to the joint by welding. Since the beam is fixed by welding, assembly takes a long time, and the beam must be held in a predetermined position when the beam is fixed to the joint by welding, making the assembly complicated.

It is an object of the present invention to provide a column-beam joining method that can advantageously solve the above-mentioned problems.

[Means to solve the problem]

In order to achieve the above object, in the wedge ring fitting type column beam joining method of the first invention, a beam joining fitting 2 having an arcuate cross section is fixed to the end of the beam 1, and the beam joining fitting 2 is fixed to the end of the beam 1. A split truncated cone-shaped dendritic outer surface 3 whose diameter decreases toward the vertical edge of the beam joint metal fitting 2 is provided at the upper and lower parts, and the beam joint metal fittings 2 of the plurality of beams 1 are fixed to the column 4. A wedge-shaped inner surface 6 in the shape of a truncated cone is provided on the upper and lower dendritic outer surfaces 3 of each beam joint 2, respectively, so as to be in contact with the outer surface of the beam holder 5. A metal imitation ring 7 having a diameter expanded by heating is fitted, and then the wedge ring 7 is reduced in diameter by cooling and is pressed against the dendritic outer surface 3.

In addition, in the model ring fitting type column-beam joining method of the second invention, a beam-joining fitting 2 having an arcuate cross section is fixed to the end of the beam 1, and the beam-joining fitting 2 has upper and lower portions attached to the beam. A split truncated cone-shaped dendritic outer surface 3 whose diameter decreases toward the vertical edge of the joint 2 is provided, and the beam joint 2 of the plurality of beams 1 is attached to the beam holder 5 fixed to the column 4. A frusto-conical wedge-shaped inner surface 8 and a dendritic outer surface 9 are provided on the upper and lower dendritic outer surfaces 3 of each beam joint metal fitting 2, which are in contact with the outer surface, respectively, and have a frusto-conical shape that decreases in diameter toward the edge of the beam joint metal fitting 2. A hard metal proofing ring 1o is press-fitted with a soft metal inner ring 1o having a truncated conical wedge-shaped inner surface 11 on the tree-like outer surface 9 of the inner ring 10. 12
are fitted in a state in which the diameter is enlarged by heating, and then the dummy ring 12 is reduced in diameter by cooling and is pressed into contact with the inner ring 10.

(Example) Next, the present invention will be explained in detail using illustrated examples.

7 and 8 show a beam 13 with a beam joining fitting used in an embodiment of the present invention, in which a steel beam is attached to the center of the outer surface of the steel beam joining fitting 2 having an arcuate cross section. Connecting protrusions 14 are integrally arranged, and the ends of the steel beams 1 having a hollow cross section are fitted into the tips of the protrusions 14 and fixed by welding, and are attached to the upper and lower parts of the beam joining fittings 2. , the beam joint fitting 2 is provided with a split frusto-conical tree-like outer surface 3 whose diameter decreases toward the upper and lower edges.

FIG. 9 shows a metal imitation ring 7 used in the embodiment of the first invention, in which a truncated conical wedge-shaped inner surface having the same slope as the dendritic outer surface 3 is provided inside the steel circular ring 15. 6, and an annular stopper 16 that protrudes toward the inside of the ring is integrally connected to the small diameter end of the wedge-shaped inner surface of the circular ring 15.

FIG. 10 shows a soft metal inner ring 10 used in the embodiment of the second invention, in which a truncated cone having the same slope as the wedge-shaped outer surface 3 is provided inside a soft metal circular ring 17 made of mild steel. A wedge-shaped inner surface 8 is provided, and a frusto-conical wedge-shaped outer surface 9 of the same slope as the wedge-shaped inner surface 8 is provided on the outside of the circular ring 17.

FIG. 11 shows a hard metal circular ring 2 used in the embodiment of the second invention, in which a wedge-shaped outer surface 9 of the inner ring 10 and a wedge-shaped outer surface 9 of the inner ring 10 are arranged on the inside of a hard metal circular ring 18 made of a tensile tension tone. A wedge-shaped inner surface 11 in the shape of a truncated cone having the same slope is provided, and an annular stopper 19 that projects toward the inside of the ring is integrally connected to the small-diameter end of the wedge-shaped inner surface of the circular ring 18 .

FIG. 12 shows a steel column 2o with a beam holder used in an embodiment of the present invention, and shows a lower steel pipe column 4A.
A steel lower beam bracket 23 having a beam joining bracket supporting protrusion 22 at its upper end is fixed by welding, and an intermediate beam bracket 24 made of a steel cylindrical body is attached to the upper part of the lower beam bracket 23 at the lower end thereof. are fitted and fixed by welding, a steel upper beam holder 25 is fitted to the upper end of the intermediate beam holder 24 and fixed by welding, and an upper steel pipe column is attached to the upper part of the upper beam holder 25. The lower ends of 4B are fixed by welding, and the lower beam bracket 23, the intermediate beam bracket 24, and the upper beam bracket 25 are fixed to each other by welding.
The beam holder 5 is constituted by the above.

Next, a description will be given of an example of the method for joining columns and beams by inserting a seal ring according to the first invention.

First, as shown in FIGS. 1 and 2, a plurality of beams 13 with beam joining fittings (four in the case shown) are arranged radially around the beam holder 5 of the steel column 20 with beam holder fittings. Beam joining metal fittings 2 in the beams 13 arranged and each having beam joining metal fittings
is brought into contact with the circumferential surface of the beam holder 5, and the lower end of each beam joint 2 is placed on the beam holder 5 supporting protrusion 22 at the bottom of the beam holder 5.

Next, the metal wedge ring 7, which has been inserted into the pillar 4 in advance, is heated by high-frequency induction heating to expand its diameter, and then the metal wedge ring 7, which has been inserted into the pillar 4 in advance, is heated and expanded in diameter. A metal cutting ring 7 whose diameter has been expanded by heating is fitted to the lower wedge-shaped outer surface 3, and then the metal imitation ring 7 is cooled by natural cooling or water cooling to reduce its diameter and each Each beam joining fitting 2 is fixed to the beam receiving fitting 5 by the metal wedge ring 7 which is pressed against the wedge-shaped outer surface 3.

5 and 6 show an embodiment of the second invention, in which a soft metal inner ring 1o and a hard metal wedge ring 12 are inserted into the pillar 4 in advance, and as shown in FIG. ,
A soft metal inner ring 10 is fitted to the upper and lower wedge-shaped outer surfaces 3 of each beam joint fitting 2, and then the hard metal wedge ring 12 is heated by high frequency induction heating to expand its diameter. Hard metal wedge ring 1 with expanded diameter
2 is fitted onto the wedge-shaped outer surface 9 of the soft metal inner ring 10 as shown in FIG.
is reduced in diameter by being cooled by natural cooling or water cooling, and is pressed against the soft metal inner ring 10, and the soft metal inner ring 0 is pressed against the wedge-shaped outer surface 3 of each beam joint fitting 2. , each beam joining fitting 2 is fixed to the beam receiving fitting 5, but the other configurations are the same as in the embodiment of the first invention.

When carrying out the present invention, a shape memory alloy may be used for the metal cut ring 7 and the hard metal cut ring 12. Further, the heating temperature of the stem ring 7°12 is set to, for example, 300 to 400°C.

〔Effect of the invention〕

Since this invention is configured as described above, it produces the effects described below.

A plurality of beam joint fittings 2 fixed to the ends of a plurality of beams 1,
A metal imitation ring 7 whose diameter has been expanded by heating is fitted onto the upper and lower wedge-shaped outer surfaces 3 of each beam joining metal fitting 2 in contact with the outer surface of the beam holder 5 fixed to the pillar 4, and then cooled. ,
Alternatively, by performing a simple operation of fitting a hard metal wedge ring 12 whose diameter has been expanded by heating to the soft metal inner ring 10 fitted to each of the wedge-shaped outer surfaces 3, and then cooling it, the pillar 4 can be The fixed beam receiving metal fitting 5 and the beam joining metal fittings 2 at the ends of the plurality of beams 1 can be easily and quickly and firmly joined.

Further, in the case of the second invention, since the soft metal inner ring 10 is interposed between the wedge-shaped outer surface 3 at the upper and lower parts of each beam joint fitting 2 and the hard metal wedge ring 12, the wedge-shaped outer surface 3 It is possible to improve the adhesion of the fitting portion with the hard metal wedge ring 12.

[Brief explanation of drawings]

1 to 4 show an embodiment of the first invention, and FIG. 1 is a longitudinal sectional front view showing a state in which a plurality of beam joining fittings are in contact with a beam receiving fitting fixed to a column; 2 is a sectional view taken along the line A-A in FIG.
It is a sectional view taken along the B line. 5 and 6 show an embodiment of the second invention, in which FIG. 5 is a longitudinal sectional front view without showing the state in which the inner ring is fitted to the wedge-shaped outer surface of each beam joint fitting, and FIG. is a longitudinal sectional front view, not showing the state in which the columns and beams have been joined. Fig. 7 is a plan view of a beam with a joint fitting used in an embodiment of the present invention, Fig. 8 is a sectional view taken along the line CC in Fig. 7, and Fig. 9 is a metal model used in an embodiment of the first invention. FIG. 10 is a partially vertical front view showing a soft metal inner ring used in an embodiment of the second invention, and FIG. 11 is a partially longitudinal front view showing a hard metal inner ring used in an embodiment of the second invention. Partial longitudinal sectional front view showing the manufactured wedge ring, No. 1
FIG. 2 is a longitudinal sectional front view of a steel column with a beam holder used in an embodiment of the present invention. In the figure, 1 is a beam, 2 is a beam joint fitting, 3 is a wedge-shaped outer surface,
4 is a column, 5 is a beam bracket, 6 is a wedge-shaped inner surface, 7 is a metal wedge ring, 8 is a wedge-shaped inner surface, 9 is a wedge-shaped outer surface, 10 is a soft metal inner ring, 11 is a wedge-shaped inner surface, and j2 is made of a hard metal. The wedge ring, 1B and 19 are stoppers, and 2 is a protrusion for supporting the beam joint metal fitting. -” Figure 7 Figure 8 Figure 9 Figure 12

Claims (2)

[Claims] (1) Beam joint fitting 2 having an arc-shaped cross section at the end of the beam 1
is fixed, and a split frusto-conical wedge-shaped outer surface 3 whose diameter decreases toward the vertical edge of the beam joint 2 is provided at the upper and lower parts of the beam joint 2. The beam joint fittings 2 are brought into contact with the outer surface of the beam support fittings 5 fixed to the pillars 4, and the wedge-shaped outer surfaces 3 of the upper and lower parts of each beam joint fitting 2 are provided with a cut-out whose diameter decreases toward the edge of the beam joint fittings. A metal wedge ring 7 having a wedge-shaped inner surface 6 having a conical shape is fitted in a state in which the diameter is expanded by heating, and then the wedge ring 7 is reduced in diameter by cooling and is pressed against the wedge-shaped outer surface 3. Ring-fitting column-beam connection method. (2) Beam joint fitting 2 having an arc-shaped cross section at the end of the beam 1
is fixed, and a split frusto-conical wedge-shaped outer surface 3 whose diameter decreases toward the vertical edge of the beam joint 2 is provided at the upper and lower parts of the beam joint 2. The beam joint fittings 2 are brought into contact with the outer surface of the beam receiving metal fittings 5 fixed to the pillars 4, and the wedge-shaped outer surfaces 3 of the upper and lower parts of each beam joint fitting 2 are provided with a cutout whose diameter decreases toward the end edge of the beam joint fittings. A soft metal inner ring 10 having a conical wedge-shaped inner surface 8 and a wedge-shaped outer surface 9 is press-fitted into the inner ring 10.
A hard metal wedge ring 12 having a wedge-shaped inner surface 11 in the shape of a truncated cone that decreases in diameter toward the end edge of the beam joint fitting is fitted onto the wedge-shaped outer surface 9 of the The diameter of the wedge ring 12 is reduced by cooling to form the inner ring 1.
A wedge ring fitting type column and beam joining method that is pressure-welded to 0.