JPH04343936A - Column/beam joint system - Google Patents

Abstract

PURPOSE:To obtain a joining structure which offers high joining strength and less numbers of parts and bolting processes in joining a steel pipe column and a H-type steel. CONSTITUTION:Diaphragms 3, 3 are welded to both ends of a joining cylinder 2 and fastened to a column mainframe 1, and brackets 4 each of which consists of two upper and lower horizontal plates 5, 6 are protruded on the sides of both diaphragms 3, 3. The flanges 13, 13 of a beam 7 are inserted in between the horizontal plates 5, 6 and joined with bolts 18.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for joining a column mainly made of square steel pipes and a beam made of H-beam steel.

0002

[Prior Art] Conventionally, as a means of joining a steel pipe column and a beam made of H-beam steel, a bracket having the same cross section as the beam is welded to the outer surface of the joint of the steel pipe column in advance, and the flanges and webs of these brackets and the beam are welded together. The two are bolted together using a joining plate passed between them.

0003

[Problems to be Solved by the Invention] In the conventional joining device described above, first, the bracket is directly welded to the outer surface of the column, so if a column with a thin wall is used, there is a risk of buckling or deformation. . Therefore, it is necessary to use a material with a large wall thickness and high strength, which increases the weight of the entire column, making it difficult to handle, and also has the disadvantage of increasing material cost. Furthermore, at least three joining plates are required to connect the bracket and the flanges and webs of the beam, and bolts must be tightened at both ends of the joining plates, which increases the number of parts and reduces the number of man-hours. There are many drawbacks.

In addition, since the bolting work of the joining plate is performed while holding the beam suspended by a crane or the like at the same height as the bracket, the work must be performed in an unstable condition. The drawback was that the workability was very poor.

[0005] The present invention has been made with the object of overcoming these conventional drawbacks in connection using brackets.

[0006]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a structure in which a joining cylinder is attached to the end of a steel pipe column main body, and a diaphragm is installed at each end of the joining cylinder. The diaphragm is welded to the end of the column main body, and a pair of brackets each having two upper and lower horizontal plates are integrally protruded in the same direction from the outer periphery of each diaphragm. The upper and lower flange ends of the beam made of shaped steel are inserted into the slits between the horizontal plates of each diaphragm, and fixed with bolts inserted through the horizontal plates and the flanges. .

[0007] In the above, it is conceivable to connect a vertical plate between the upper and lower brackets, overlap the vertical plate and the web of the beam, and join these vertical plates and webs to each other.

Furthermore, the third invention of this application is characterized in that, of the upper and lower horizontal plates of each bracket, the lower horizontal plate has an end protruding in the horizontal direction.

[0009]

[Operation] Since the flange of the beam is inserted between the horizontal plates of the bracket and directly connected with bolts, no special joining plate is required and the number of bolts can be reduced. Since the horizontal plate and the beam are joined by two-sided friction on both sides of the flanges of the beam, the number of bolts can be further reduced. In addition, since the bracket is integrally attached to the diaphragm at the end of the joining cylinder, the load from the beam will be transmitted to this diaphragm via the bracket, making it difficult to use when using thin-walled steel pipes. However, there is no risk of buckling or deformation.

0010

[Example] In the drawings showing an example of the present invention, 1.
Reference numeral 1 denotes a pair of upper and lower column bodies made of shaped steel pipes, and 2 denotes a single-length joining cylinder made of shaped steel pipes having the same cross section as the column bodies 1 and 1. A pair of rectangular diaphragms 3 slightly larger than the joining cylinder 2 are installed at both upper and lower ends of the joining cylinder 2.
, 3 are welded together. A circular hole 10 is formed in the center of these diaphragms 3, 3 as shown in FIG. Brackets 4, 4 of the present invention are welded at one end to the end faces of the diaphragms 3, 3 on the side where they are joined to the beam 7, so as to project horizontally outward.

These brackets 4, 4 are bifurcated when viewed from the side, with two upper and lower horizontal plates 5, 6 protruding in the direction of the beam 7 from the ends on the welding side to the diaphragms 3, 3. Each horizontal plate 5, 6 has two bolt holes 8, 8 formed at its tip. Further, the upper horizontal plate of each bracket 4, 4 has both ends in the left and right direction cut off over a certain length from the tip, so that the lower horizontal plate 5 is relatively lower than the upper horizontal plate 5. It is designed to protrude outward 9,9.

Reference numeral 11 denotes one vertical plate that is attached between the upper and lower horizontal plates 5 and 6 of the brackets 4 and 4, which are opposed to each other, and whose upper end is welded to the center of the lower surface of the lower horizontal plate 6 of the upper bracket 4. , the lower end is welded and fixed to the center of the upper surface of the horizontal plate 5 on the upper part of the lower bracket 4. Further, the end of the vertical plate 11 on the joining cylinder 2 side is welded to the joining cylinder 2, and two upper and lower bolt holes 12, 12 are formed in the other end. Moreover, both upper and lower ends of this vertical plate 11 are cut off over a certain length from the tip thereof.

The beam 7 is made of an H-shaped steel whose flanges 13, 13 are arranged vertically parallel to each other, and the flanges 13, 13
The horizontal plates 5, 6 of the brackets 4, 4 are attached to the tips of the brackets 4, 4.
A bolt hole 14 corresponding to the bolt hole 8 of the vertical plate 11 is formed at the tip of the web 15.
Bolt holes 16, 16 corresponding to 2 are formed. Furthermore, both upper and lower ends of the web 15 are cut out over a certain length from the tip, so that a gap 17 is formed between the flanges 13 and the flanges 13, which is large enough to fit the horizontal plates 5 and 6 of the brackets 4 and 4.
is formed.

In the above configuration, first, the tips of the flanges 13, 13 of the beam 7 suspended by a crane or the like are placed on the protrusion 9 of the lower horizontal plate 6 that protrudes from the upper horizontal plate 5 of each bracket 4, 4. By sliding horizontally in this state, the flanges 13, 13 are installed in predetermined positions, and the web 15 of the beam 7 is superimposed on one side of the vertical plate 11. As a result, the ends of the beams 7 are supported by the horizontal plates 6 on the lower side of each bracket 4, 4, so in this state, the bolt holes 8 of the horizontal plates 5, 6 and the flanges 13, 1
4, insert the bolts 18 into these horizontal plates 5,
6 and flanges 13, 13 are fixed, bolts 19 are inserted into the bolt holes 12, 16 of the web 15 and the vertical plate 11, these are fixed, and the beam 7 is joined.

[0015]

[Effects of the Invention] As described above, in this invention, the flange of the beam is inserted between the horizontal joint plates of the bracket and directly connected with bolts, so there is no need for a special joint plate, and the number of bolts can be reduced. You'll end up needing less. Therefore, the number of parts is reduced, and the number of man-hours required for bolt tightening can also be reduced. At that time, the bolt tightening work can be performed with the end of the beam placed on the horizontal plate below the bracket, which has the effect of greatly improving workability. Moreover, since the joining plate and the beam are joined by two-sided friction on both sides of the flanges of the beam, the frictional force is large, and the number of bolts can be further reduced.

In addition, since the bracket is integrally attached to the diaphragm at the end of the joining cylinder, the load from the beam is transmitted to this diaphragm via the bracket, and the load is transferred to the column body etc. Even when using thin-walled steel pipes, there is no fear of buckling or deformation, and it is possible to obtain a column that is overall lightweight and inexpensive.

Furthermore, in the third invention of this application, a beam suspended by a crane or the like is placed on the protrusion of the horizontal plate on the lower side of each bracket, and the beam is slid horizontally to a predetermined position. Since it can be installed at any position, it is possible to easily align the bolt holes.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a column and beam joint showing an embodiment of the present invention.

FIG. 2 is a side view of the bonded state.

FIG. 3 is a cross-sectional view of a main part showing a state in the middle of a method of installing a beam on a bracket.

[Explanation of symbols]

1 Pillar body 2　Cylinder for joining 3 Diaphragm 4 Bracket 5 Horizontal plate 6 Horizontal plate 7 Beam 9 Protruding part 11 Vertical plate 13 Flange 15 Web

Claims (3)

[Claims] Claim 1: A joint cylinder is attached to the end of a column body made of steel pipe, in which a diaphragm is welded to each end of the joint cylinder, and the joint cylinder is attached to the end of the column body through the diaphragm. At the same time, a pair of brackets with two upper and lower horizontal plates are integrally protruded from the outer periphery of each diaphragm in the same direction, and the upper and lower flange ends of the beam made of H-shaped steel are connected to the upper and lower flange ends of each diaphragm, respectively. A column/beam joining device characterized by being inserted into a slit between horizontal plates and fixed with bolts inserted through the horizontal plates and flanges. 2. The vertical plate according to claim 1, wherein a vertical plate is integrally attached between the upper and lower brackets, and the vertical plate and the web of the beam are overlapped with each other, so that these vertical plates and the web are also joined to each other. Column/beam joining equipment. 3. The column-beam joining device according to claim 1, wherein the lower horizontal plate of the upper and lower horizontal plates of each bracket has an end projecting in the horizontal direction.