JPH06101270A - Method of combination construction of post and girder - Google Patents

Abstract

PURPOSE:To attain the reduction of material cost and carriage generated by a structurally projected gusset plate, and to increase the quantity of transport to quantity more than before and simplify a routing. CONSTITUTION:The gusset plate 1A of a post 2 and the ends of the webs 3a of girders 3 are superposed. and temporary bolts 8 are inserted into mutual hoop holes at the superposed positions, thus holding the girders 3 to the post 2. The ends of the webs 3a of the girders 3 and the ends of flanges are welded to the gusset plate 1A of the post 2 and a diaphragm section 2b under the holding state respectively. Hoop reinforcements can be inserted in place of the temporary bolts 8 of the hoop holes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column-to-beam coupling method for directly coupling a beam to a column when constructing a steel structure.

[0002]

2. Description of the Related Art When constructing a conventional steel structure,
For the bracket end welded to the joint of the column at the factory, a method of bolting the beam etc. is widely adopted at the assembly site, considering the earthquake resistance, while obtaining great strength in the column and joint, The beam is divided into three sections to change the cross section and reduce the weight of the steel material.

On the other hand, recently, there is no difference in workability and quality between factory welding and on-site welding, that weight can be reduced without using bolts and rivets, and workability is good. For the reason, the so-called in-situ welding method in which the beam is directly connected to the column has attracted attention.

FIG. 2 is a conceptual diagram showing a conventional example of such a column-beam coupling method, in which 1 is a flange 2 of a column 2 such as SRC.
a) a gusset plate projecting from the beam attachment corresponding part in a. The web 3a end of the beam 3 such as S or SRC is fitted to the gusset plate 1, and the beam is attached to the gusset plate 1 by a high-strength bolt 4. Web of 3
a is bonded and held. Further, the flange 3b end of the beam 3 is welded to the column 2 at the diaphragm portion 2b.
In addition, 6 is a hoop hole for inserting a hoop muscle in a beam-column joint provided in the base of the gusset plate 1. Further, 7 is a concrete surface to be placed.

[0005]

However, in the conventional field welding method, the gusset plate 1 needs to be provided with a hoop hole 6 and a bolt hole (not shown) into which the high-strength bolt 4 is inserted. From relatively large beam 3
It has to be projected to the side, so that it becomes a pillar with a large projecting ledge, which still restricts the transportation amount, does not reduce the weight, and material cost and transportation cost reduction is still insufficient. There were problems such as being there.

The present invention has been made by paying attention to the conventional problems as described above. The strength and the quality are improved, the size of the cross section of the column is suppressed, the weight is reduced and the transport amount is increased. Further, it is an object of the present invention to provide a method for connecting columns and beams using columns that can reduce material costs and transportation costs.

[0007]

According to the method for connecting a pillar and a beam according to the present invention, a web end of the beam is aligned with a gusset plate provided at a portion corresponding to the beam attachment of the pillar, and the gusset plate and the web end are provided. Insert a temporary bolt into the hoop hole, held the beam against the column, after welding the web end and the flange end of the beam to the gusset plate and the diaphragm portion of the column in this holding state, Instead of the temporary bolt, a hoop muscle can be inserted into the hoop hole.

[0008]

The hoop hole according to the present invention is used to temporarily hold the web end of the beam on the column with a temporary bolt. After the web end is directly welded to the gusset plate, the temporary bolt is removed to insert a hoop streak. By doing so, the cross section of the column can be downsized, the weight of the column such as SRC can be reduced, and the desired bonding strength can be obtained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1A denotes a short gusset plate projecting at a beam mounting corresponding portion of a pillar flange 2a of a pillar 2 such as an SRC.
Hoop holes (not shown) that overlap with the hoop holes (not shown), into which temporary bolts 8 described later are inserted, which are provided at the ends of the webs 3a of the RC beams 3, are provided. Reference numeral 8 is a temporary bolt temporarily inserted into each of the hoop holes.

Next, a procedure for connecting the column 2 and the beam 3 will be described. First, the beam 3 is pulled up between the columns 2 by a crane or the like, the end of the web 3a of the beam 3 is overlapped with the gusset plate 1A, and the temporary bolts 8 are inserted in the hoop holes.
Plug in. Thereby, the beam 3 is held by the pillar 2.

Next, in this holding state, the gusset plate 1A and the web 3a are welded, and the flange 3b of the beam 3 is welded to the diaphragm portion 2b of the column 2. By doing so, the beam 3 is completely fixed and held on the column 2.
Further, in such a joint structure of the column 2 and the beam 3, the temporary bolt 8 is not necessary, so this is taken out from the hoop hole, and the hoop reinforcement for concrete placement is inserted into this hoop hole. This makes it possible to prepare for the next step such as concrete pouring.

Thus, the beam 3 is temporarily installed on the pillar 2 by inserting the temporary bolt 8 into the hoop hole which also serves as the temporary bolt hole, and after the beam web 3a is welded to the gusset plate 1A, the temporary bolt is not removed. However, the beam 3 can be reliably attached to the column 2 by a simple operation of inserting the hoop muscle instead of this.

The web 3a is a gusset plate 1A.
Since it is welded, the original cross section can be used when the design is changed, and since the gusset plate 1A can be suppressed to the necessary minimum, the protrusion from the column 2 is reduced, and the loading efficiency during lateral holding and transportation is improved. It does not go up, the pillar is not twisted, and it is economical.

[0014]

As described above, according to the present invention, the web ends of the beams are aligned with the gusset plates provided at the beam attachment corresponding portions of the columns, and the gusset plates and the hoop holes provided at the web ends are provided. Insert a temporary bolt to hold the beam to the column, and in this holding state, weld the web end and the flange end of the beam to the gusset plate and the diaphragm part of the column, respectively, and then to the hoop hole. Since it is possible to insert a hoop streak instead of a temporary bolt, it is possible to facilitate and speed up the work of joining columns and beams, mainly for web welding, and also ensure sufficient joining strength, as well as the protrusion of columns. Since it can be kept as small as possible, it is possible to increase the number of vehicles to be installed, etc.
Economic effects can be obtained by facilitating the handling and transportation of pillars and reducing transportation costs.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a method of connecting a column and a beam according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a conventional method of connecting columns and beams.

[Explanation of symbols]

 1A Gusset plate 2 Pillar 2b Diaphragm part 3 Beam 3a Web 3b Flange 8 Temporary bolt

Claims (1)

[Claims] 1. A web end of a beam is aligned with a gusset plate provided at a beam attachment-corresponding portion of a column, and temporary bolts are inserted into hoop holes provided at the gusset plate and the web end. After holding the beam and welding the web end and flange end of the beam to the gusset plate and the diaphragm part of the column, respectively, in this holding state, it is possible to insert a hoop streak into the hoop hole instead of the temporary bolt. The method of joining the pillars and beams.