JPH0715182B2 - Joining equipment for steel structural members for construction - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for joining steel structural members for construction such as columns and beams.

[Prior Art] A conventional example of this type of joining method will be described with reference to FIG.

The figure shows a joint state between a pillar 21 and a beam 22 (H-shaped steel) which are steel structural members for construction.

In joining the beam 22 to the column 21 of the structural steel structural member for construction, which comprises the core part 25 consisting of the diaphragm 23 arranged vertically and the panel zone 24 welded between them, it is formed in the core part 25 of the column 21. Bracket 26 (H
Shaped steel) is welded 27 in advance, the beam 22 to be joined is butted against the bracket 26, and the upper and lower flange portions 28 of both are provided with attachment plates 29, respectively, and the attachment plates are attached by bolts 30 and nuts 31. The columns 21 and the beams 22 were joined by tightening, and attachment plates 33 were respectively arranged on the front and back of both webs 32 and tightened by bolts 34.

[Problems to be Solved by the Invention] In such a joining method, [1] it is an irrational joining method in which one beam is cut into three to make left and right brackets, and they are connected, Since the bracket is welded to the core portion at the factory and then the pillar is transported to the site, it becomes an obstacle to the transportation work and increases the weight.

[2] The welding work is difficult because the bracket interferes with the welding of the columns.

[3] Since bolt holes for joining are drilled in the upper and lower flange portions of the bracket and the beam, respectively, only 80% to 90% of the strength of the base material cross section is lost due to a chipped cross section.

[4] Since the joining bolts are attached to both the base materials to be joined, the bolts are used twice as much as the required yield strength.

[5] Since the joining method is friction joining that makes full use of the tension of the high-strength bolt, the proof stress of the high-strength bolt is not fully utilized.

There was a problem such as.

The present invention has been made in view of such problems of the conventional technique, and an object thereof is to eliminate a bracket for beam joining and use a joining base material welded to the beam. By screwing the bolts stored in this into the diaphragm of the core part, the weight of the pillar during transportation is reduced, the weakening of the strength of each joint is prevented, and the joining work is facilitated. It is intended to provide a joining device.

[Means for Solving the Problems] In order to achieve the above object, in the joining apparatus for building steel structural members of the present invention, a core portion including diaphragms arranged above and below and a panel zone welded therebetween is provided. In a structure in which a beam is joined to a column of a structural steel structural member for construction, a female screw hole is formed in the diaphragm, a gusset plate for web joining is welded to the panel zone, and the female screw hole of the diaphragm is screwed. The storage substrates for storing the bolts are arranged above and below, and the joining base material, which is connected between them with the beam joining web, is welded to the ends of the beams.

It is also optimal that the storage board has a bolt storage hole and a hole for embedding a nut and a wedge washer that traverses the hole.

[Operation] The beam is brought close to the column, and first, the beam-bonding web and the gusset plate are overlapped with each other to temporarily tighten them.

Next, after inserting the bolt stored in the storage board into the female screw hole of the diaphragm to join the storage board and the diaphragm,
The beam bonding web and the gusset plate are finally tightened to completely bond the beam to the column.

[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 to 5.

In the figure, 1 is a column steel tube that constitutes a column of a structural steel structural member, and 2 is a core portion in which diaphragms 3 are arranged vertically and a panel zone 5 is welded by a backing plate 4 therebetween.

The diaphragm 3 is provided with a female screw hole 7 into which a bolt described later is screwed, and a backing plate 8 for welding and joining the core portion 2 to the pillar steel pipe 1 is attached to the groove 6. ing. A gusset plate 9 is welded to the panel zone 5 for joining with a web described later.

Reference numeral 10 denotes a storage board for storing a bolt 11 screwed into the female screw hole 7 of the diaphragm 3, and the storage board 10 is arranged vertically, and the webs 12 for beam connection are connected between them. A joint base material 13 composed of the storage substrate 10 and the web 12 has one end welded to the end of the beam (H-shaped steel) 14, and the beam joint web 12 is superposed on the gusset plate 9. It is fixedly connected by the bolt 15.

A bolt storage hole 16 is formed in the storage substrate 10 of the bonding base material 13 at a position facing the female screw hole 7 of the diaphragm 3, and a nut 17 and a wedge washer embedded in the hole 16 are formed.
A buried hole 19 for 18 is formed so as to cross the hole 16.

The inner peripheral shape of the wedge washer 18 is an elliptical shape that is slightly longer in the vertical direction in order to sufficiently perform the wedge action.
Reference numeral 20 is a wrench engraving for rotating the bolt 11.

In the embodiment of the present invention having the above-mentioned configuration, a core 2 including the diaphragm 3 having the female screw hole 7 and the panel zone 5 to which the web joining gusset plate 9 is welded is prepared in advance, Column steel pipes 1 are welded above and below the core 2 to form steel structure columns.

At the end of the beam 14, a bolt storage hole 16 is oriented at a position facing the female screw hole 7 of the diaphragm 3, and a bonding base material 13 is welded in a direction so that the beam bonding web 12 can be superposed on the gusset plate 9. deep.

The beam is brought close to the column, and first, the beam joining web 12 and the gusset plate 9 are superposed and temporarily fastened to each other with a bolt 15.

Next, the bolt 11 is advanced toward the female screw hole 7 of the diaphragm 3 with a spanner while lightly pressing the nut 17 embedded in the hole 16 by hand. When the tip of the bolt 11 reaches the entrance of the female screw hole 7, the nut 17 is released to release the nut 17. When the bolt 11 is subsequently rotated, when the screw groove of the bolt and the screw groove of the female screw hole 7 are aligned, the bolt 11 slightly moves into the female screw hole 7, so that the nut is
When the nut 17 is in contact with the embedding hole 19, the nut 17 is somewhat restrained. At this point, the wedge washer 18 is pushed in to completely fix the nut 17 to the storage board 10. Then, the bolt 11 is rotated so that the bolt is screwed to a predetermined position in the female screw hole 7.

When the beam 14 is joined by the bolt 11, the beam-column joining is completed by finally tightening the bolt 15 for joining the beam-joining web 12 and the gusset plate 9.

It should be noted that after the joining is completed, an adhesive may be injected between the wedge washer 18 and the bolt 11 in order to prevent the bolt 11 from loosening.

[Advantages of the Invention] In the present invention, in a structure in which a beam is joined to a column of a steel structural member for construction having a core portion composed of diaphragms arranged above and below and a panel zone welded therebetween, A gusset plate for web joining was welded to the panel zone while screw holes were formed, and storage boards for storing bolts to be screwed into the female thread holes of the diaphragm were arranged vertically, and the webs for beam joining were connected between them. Since the joining base material is welded to the end of the beam, it is not necessary to weld the bracket to the core as in the conventional example, the weight of the core is reduced, the pillars are easy to transport, and the pillars are welded above and below the core. The welding work of the column steel pipe becomes extremely easy. Also, since the beam and column are joined by bolts, the work is easy and the joint portion of the beam and column is shortened.
The fireproof coating and base material can be easily attached before building the steel frame, and the construction period can be shortened. Further, since the bonding base material is directly welded to the beam to be bonded, there is no need to cut one beam into three and connect them to make left and right brackets as in the conventional case. It is also strong enough.

Further, when the storage board has a bolt storage hole and a hole for embedding a nut and a wedge washer that traverses the hole, the thread groove of the bolt and the thread groove of the internal thread hole of the diaphragm can be matched very easily. Thus, the bolt can be smoothly screwed into the female screw hole, and the beam can be completely joined by the bolt.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment using the device according to the present invention, FIG. 2 is a sectional view of a main part thereof, FIG. 3 is a plan view of a bonding base material, FIG. 4 is a side view thereof, and FIG. FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a side view of a conventional example. 1 ... Column steel pipe, 2 ... Core part, 3 ... Diaphragm,
5 ... panel zone, 7 ... female screw hole, 9 ... web joining gusset plate substrate, 10 ... storage substrate, 11 ... bolt, 12 ... beam joining web, 13 ... joining base material, 14 ......
Beam, 16 ...... bolt storage hole, 17 ...... nut, 18 ...... wedge washer, 19 ...... embedded hole.

Claims (2)

[Claims] 1. A method of joining a beam to a column of a steel structural member for construction comprising a core portion comprising diaphragms arranged vertically and a panel zone welded between the diaphragms, wherein a female screw hole is formed in the diaphragm. A gusset plate for web joining is welded to the panel zone, and a storage substrate storing the bolts screwed into the female screw holes of the diaphragm is arranged vertically and a joining base material is connected between them with a beam joining web. An apparatus for joining steel structural members for construction, which is welded to the ends of beams. 2. The joining apparatus for steel structural members for a building according to claim 1, wherein said storage substrate has a bolt storage hole and a hole for embedding a nut and a wedge washer which traverses the hole.