JPH0519401U - Joint structure of columns and beams - Google Patents

Abstract

(57) [Summary] [Purpose] A field work can be simplified to save labor, a highly reliable joint structure can be formed, and each component can be efficiently transported. [Structure] Left screw hole 31A pre-screwed on a joint surface of a joint box 30 which constitutes a part of a rectangular steel pipe column 10.
The left nut 40A is screwed onto the outer circumference, and the joining nut 40 is screwed with the right screw 40B on the inner circumference. The bolt holes 21A are screwed into the end plate 21 attached to the end of the beam 20 And the beam 20 is joined to the rectangular steel pipe column 10 by the bolt 50 via the right screw 40B of the joining nut 40.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint structure of columns and beams in a steel structure building, and more particularly to a joint structure in which a beam made of H-shaped steel is joined to a rectangular steel tube column.

[0002]

[Prior Art]

 As shown in FIG. 6, the conventional technique for joining a beam made of H-shaped steel or the like to a rectangular steel tube column is to join the diaphragms 2 and 2 with the diaphragms 2 and 2 interposed in the rectangular steel tube column 1 as shown in FIG. The beam 3 made of H-shaped steel is connected and joined to the brackets 7 and 7 by the bolts 5 and the nuts 6 via the reinforcing plates 4 and 4. That is, the diaphragms 2 and 2 are attached to the upper and lower sides of a rectangular tube body 2'which is cut to a size corresponding to the heights of the upper and lower flanges of the beam 3, and a predetermined rectangular steel tube is welded to the upper and lower sides of the rectangular tube body 2'to manufacture a rectangular steel tube column 1. Then, after that, on the diaphragms 2 and 2 of the rectangular steel pipe pillar 1, a joining bracket 7 in which a predetermined bolt hole 4A is machined into an H-shaped steel having the same cross-sectional shape as the beam 3 is cut into a short steel pipe. A rectangular steel tube column 1 capable of joining the beam 3 is manufactured by joining, and in parallel with this, an H-shaped steel is cut into a predetermined dimension, and a predetermined bolt hole 3A or the like is processed in this to form the beam 3 Was manufactured separately. At the site, the square steel pipe columns 1 and beams 3 manufactured in the factory were assembled by connecting them with a reinforcing plate 4, bolts 5 and nuts 6.

Further, as shown in FIG. 7, a rectangular steel tube column 1 and a beam 3 which have been processed by cutting an H-shaped steel into a predetermined size in the past have been processed by cutting a rectangular steel pipe into a predetermined size. After they were delivered to the site, they were assembled by welding them together.

[0004]

[Problems to be solved by the device]

 However, in the former beam joining technique of the related art, since the square steel pipe column 1 is transported by a truck or the like with the joining bracket 4 attached, the joining bracket 7 becomes an obstacle and bulky, and the number of points to be transported at one time is reduced. Therefore, there is a problem that the transport efficiency is reduced and the joining bracket 7 is damaged during the transport. Furthermore, the number of parts required for joining is large, such as the joining bracket 7, the joining bolt 5, the reinforcing plate 4 and the like, and there is also a problem that the work in the field is increased accordingly.

On the other hand, the latter technique of the related art directly welds a square steel tubular column and a beam made of H-shaped steel at a high place in the field, and thus requires careful welding work to obtain a predetermined welding strength. However, this welding work is not always reliable because it is easily affected by the weather, especially humidity.

Therefore, an object of the present invention is to provide a pillar structure capable of simplifying on-site work and saving labor, forming a highly reliable joint structure, and efficiently transporting each constituent member. And to provide a beam joint structure.

[Means for Solving the Problems]

 According to the present invention, in a column-beam joining structure for joining a beam to a joint box forming a part of a column, a left screw hole is pre-screwed on the joint surface of the joint box, and a left screw is provided on the outer circumference. Screw the joint nuts with the right-hand screws on the circumference, and bolt the bolts pre-threaded to the end plate attached to the end of the steel beam and the screw holes of the joint nuts to the pillars. The above object has been achieved by providing a column-beam joint structure formed by bolting steel beams together.

[0007]

[Action]

 According to the present invention, after the joining nut is screwed into the left screw hole that is pre-screwed on the joining surface of the joint box of the pillar, the end plate at the end of the steel beam is brought into contact with the joint box to join the joining nut. The column and beam can be joined simply by screwing the right screw and the bolt into the bolt hole.

[0008]

【Example】

 The present invention will be described below based on the embodiments shown in FIGS. In each figure, FIG. 1 is a cross-sectional view showing an essential part of an embodiment of a column-beam joint structure of the present invention, and FIG. 2 is an exploded perspective view of the column-beam joint structure shown in FIG. 3 is a cross-sectional view showing the end plate attached to the end of the beam and a positioning member, FIG. 4 is a front view showing the beam with the end plate shown in FIG. 3, and FIG. 5 is the joining nut shown in FIG. It is a perspective view.

As shown in FIGS. 1 and 2, the joint structure of the pillar and the beam according to the present embodiment includes a beam 20 made of H-shaped steel in a joint box 30 which constitutes a part of the pillar (square steel pipe pillar) 10. It is configured by bolting via an end plate 21 attached to the end. To describe this structure in more detail, in the prismatic steel pipe column 10, the prismatic steel pipe 10A and the prismatic steel pipe 10B are connected via a joint box 30. The joint box 30 is provided with a main body 31 having a substantially square cross section along the shape of the rectangular steel pipe column 10, and reinforcing diaphragms 32, 32 welded to the upper and lower openings of the main body 31. It is formed in a box shape, and is configured to weld the square steel pipe 10A and the square steel pipe 10B to the diaphragms 32, 32. Further, the beam 20 is configured such that an end plate 21 shown in FIG. 3 is welded to an end portion thereof as shown in FIG. 4, and the end plate 21 is joined to the joint box 30 as described above. ing.

Further, three left screw holes 31A are longitudinally threaded in two rows in the lateral direction on each joint surface of the joint box 30, and a joint nut 40 is screwed into these left screw holes 31A. Is configured to. As shown in FIG. 5, the joint nut 40 has a left screw 40A screwed on the outer peripheral surface having a reduced diameter, and a right screw 40B screwed on the inner peripheral surface. It is formed so as to be screwed into the screw hole 31A. Then, with the joining nut 40 screwed into the joint box 30, the bolt 50 is screwed into the right screw 40B of the joining nut 40 through the bolt hole 21A of the end plate 21 to join the beam 20 to the joint box 30. Is configured.

Further, a fitting portion 33 which is fitted into the opening of the rectangular steel pipe 10A or 10B is attached to the diaphragm 32, and the rectangular steel pipe 10A or 10B is fitted into the fitting portion 33 as shown in FIG. As shown in FIG. 2, the two 10A and 30 are welded together to form the square steel pipe column 10. On the other hand, the end plate 21 is formed in such a size that its upper end projects from the joint surface of the joint box 30, and the positioning plate 22 is attached to this upper end. Then, bolt holes 21B and 22A are formed on the left and right of the upper end of the end plate 21 and the positioning plate 22, respectively, and the two holes 21 and 22 are fastened together by bolts 24 and nuts 25.

Therefore, in order to obtain the joint structure of the present embodiment, first, the joint nut 40 is screwed into the left screw hole 31 A of the main body 31 of the joint box 30, and then the diaphragms 32 1 and 32 are welded together. 30 is produced, and then the joint box 30 is welded to the square steel pipes 10A and 10B to produce the square steel pipe column 10. The beam 20 is also manufactured in parallel with this. The square steel tube column 10 and the beam 20 thus manufactured are carried into the site, the square steel tube column 10 is constructed, and then the beam 20 is lifted at a proper time so that the positioning plate 22 of the end plate 21 is attached to the joint box 30. The beam 20 is positioned by engaging with the upper end and aligning the bolt hole 21A of the end plate 21 with the position of the right screw 40B of the joining nut 40 on the joining surface. After that, the beam 20 can be joined to the square steel pipe column 10 only by tightening the bolt 50 into the bolt hole 21A positioned. At this time, since the joint nut 40 is screwed into the joint box 30 by the left screw 40A, when the bolt 50 is strongly screwed, the joint nut 40 is screwed into the joint box 30 more and more strongly, and the square steel pipe column 10 and the beam. The joint with 20 can be made more reliable.

As described above, according to the present embodiment, since the square steel pipe column 10 does not have the protruding portion (joint bracket) as in the conventional case, the square steel pipe column 10 is efficiently manufactured without causing damage to the square steel pipe column 10 by a truck or the like. It is possible to carry out the work efficiently, and since it is not necessary to perform welding work when joining the beam 20 without using members such as joining bolts and reinforcing plates, it is possible to simplify on-site work. Moreover, high quality joining can be performed.

It should be noted that the present invention is not limited to the above-described embodiment in any way, and in a column-beam joining structure for joining a beam to a joint box forming a part of the column, the joint surface of the join box is The left nut is screwed in advance to the left screw hole on the outer circumference, and the joining nut with the right screw is screwed on the inner circumference is screwed into the end plate attached to the end of the steel frame beam. The present invention includes all pillar-to-beam joint structures formed by bolting the above-mentioned steel frame beam to the above-mentioned pillar through the bolt holes screwed together and the screw holes of the above-mentioned joint nut.

[0015]

[Effect of the device]

 The joint structure of a pillar and a beam of the present invention can simplify on-site work and save labor, form a highly reliable joint structure, and efficiently transport each component. is there.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of an embodiment of a column-beam joint structure of the present invention.

FIG. 2 is an exploded perspective view of the column-beam joint structure shown in FIG.

FIG. 3 is a cross-sectional view showing an end plate attached to an end portion of a beam and a positioning member.

FIG. 4 is a front view showing a beam to which the end plate shown in FIG. 3 is attached.

5 is a perspective view showing the joining nut shown in FIG. 1. FIG.

FIG. 6 is a cross-sectional view showing an example of a conventional column-beam joint structure.

FIG. 7 is a cross-sectional view showing another example of a conventional column-beam joint structure.

[Explanation of symbols]

 10 Rectangular Steel Column 20 Beam 21 End Plate 21A Bolt Hole 30 Joint Box 31A Left Screw Hole 40 Joint Nut 40A Left Screw 40B Right Screw 50 Bolt

Claims (1)

[Scope of utility model registration request] 1. In a column-beam joining structure for joining a beam to a joint box forming a part of the column, a left screw hole is preliminarily screwed on the joint surface of the joint box, and a left screw is provided on the outer circumference. The right nut is screwed into the inner circumference, and the joint nuts are screwed together.The bolts are screwed into the end plate attached to the end of the steel beam in advance, and the screw holes of the joint nuts are used to connect the pillars A column-beam connection structure that is formed by bolting the above steel beams together.