JPH0532561Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial Application Field" The present invention relates to a joint structure between square steel pipe columns and steel beams in buildings such as houses.

"Prior Art" Various techniques have been proposed to date for joining square steel pipe columns and I-shaped steel beams. For example, 2
When constructing a multi-story house, beams are attached to columns at a height corresponding to the ceiling of the first floor, but the technique for attaching beams is to attach brackets to the sides of the columns in advance at a factory, etc. A known method is to erect a column and then fix a beam to the bracket by welding or the like. However, according to this method, the pillars are as long as two stories, which not only requires transportation means commensurate with this length, but also has the problem of poor transportation efficiency as the brackets get in the way. be.

Therefore, in an attempt to solve this problem, we connected the upper and lower columns that make up the upper and lower floors using joint boxes, and fixed the mounting plates attached to the beams to the sides of the joint boxes to connect the columns and beams. A method for joining these has been developed (Japanese Patent Publication No. 61-58620).

In the case of such a structure, since no bracket is used, there are no protruding parts, and there are advantages such as improved transportation efficiency.

``Problems that the invention attempts to solve'' By the way, with any of the above structures, the aim is to reduce costs by promoting factory production of building parts, but they require brackets and thick walls. The current situation is that it is still structurally complex, such as requiring an intro box, and that sufficient cost reductions have not been achieved. In addition, particularly in the case of the method using a joint box, there is a problem that the workability is poor because it is necessary to weld and connect the two upper and lower columns via the joint box at the construction site.

Therefore, with this invention, both the work of connecting the upper and lower columns and the work of connecting the beams to the pillars can be done extremely easily by bolting, improving the workability, and creating a structure suitable for factory production. The purpose of this project is to provide a column-to-beam joint structure that is easy to reduce costs.

``Means for Solving Problems'' The column-to-beam joint structure according to the present invention consists of a joint end with a bolt insertion hole between upper and lower square steel pipe columns that are butt-joined in the axial direction, and a joint end with a bolt insertion hole between the upper and lower square steel pipe columns. A column-to-beam joint structure in which the joint ends of the steel beams with bolt insertion holes are joined from the sides to the joints of the steel beams, and are bolted to the upper and lower rectangular steel pipe columns through tap plates with screw holes. The bolts include two bolts: a temporary bolt and a connecting bolt.
The bolt insertion holes of the upper and lower square steel pipe columns are respectively provided in the side walls of the square steel pipe columns, and the tap plate is screwed into the screw hole of the tap plate from the bolt insertion hole of the upper and lower square steel pipe columns. The head of the temporary fixing bolt is located in the bolt insertion hole of the square steel pipe column, and the connecting bolt is fixed by the bolt insertion hole of the steel beam and the square steel pipe column. It is characterized by passing through the bolt insertion hole of the pillar and being screwed into the screw hole of the tap plate.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Figures 1 and 2 are longitudinal and cross-sectional views of the main parts showing the joint structure of columns and beams. In these figures, symbols 1 and 2 are a pair of upper and lower rectangular steel pipe columns with a rectangular cross section. , numerals 3 and 4 are I-shaped steel beams that are respectively joined from the sides to the joining portions where these square steel pipe columns 1 and 2 are butt-jointed in the axial direction.

The above-mentioned upper and lower square steel pipe columns (hereinafter abbreviated as columns)
The end faces of the portions 1 and 2 that abut each other are both open, and rectangular plate-shaped diaphragms 5 and 6 are fixed to the interior thereof by welding, respectively. A plurality of bolt insertion holes 7 and 8 are regularly provided in the side wall portions of the respective open ends of each column 1 and 2, penetrating both the inside and the outside of the side wall portions. As shown in FIG. 3, each open end is configured to be used as a joint end 1A, 2A with a bolt insertion hole, respectively. In this embodiment, the bolt insertion holes 7 and 8 are four bolt insertion holes 7 located at the four corners of a rectangle with respect to one side wall surface of the column, and one bolt insertion hole 8 located at the center thereof. A total of five bolt insertion holes are considered as one set, and they are provided on the four side wall surfaces of the column.
Furthermore, the bolt insertion hole 8 located in the center of each bolt insertion hole composing the set is arranged so that the head portion of the temporary bolt 13 (to be described later) is sunk into its own bolt insertion hole 8. It is formed into a tapered hole that expands toward the surface of the column.

On the other hand, the code 9 is the joint end 1A of the upper and lower pillars 1 and 2,
It is a tap plate with screw holes 10 and 11 that extends inside the tap plate 2A, and is formed in the shape of a rectangular thick plate as a whole. The screw holes 10 and 11 of this tap plate 9 are also formed into a set of five screw holes so as to correspond to the bolt insertion holes 7 and 8, and the tap plate 9 is connected to the connecting end 1A as shown in FIG. , 2A, it is set so as to match with each bolt insertion hole 7, 8 of the pair of both joint ends 1A, 2A.

The bolts used for fastening the upper and lower columns 1, 2 and the beams 3, 4 and screwed into each screw hole of the tap plate 9 are composed of two types: temporary bolts 13 and coupling bolts 14. In the embodiment, a so-called flathead bolt with a flat head is used as the temporary fixing bolt 13, and the upper and lower columns 1,
The bolts are screwed into the corresponding screw holes 11 of each tap plate 9 from the respective bolt insertion holes 8 of 2. A general bolt is used as the fastening bolt 14, and is screwed into the screw hole 11 of the tap plate 9 through the bolt insertion hole 16 provided in the end plate 15 at the joint end of the beam and the bolt insertion hole 7 of the column. There is. In addition, regarding the side part of the column where the beams 3 and 4 are not joined, the end plate 1 of the beam is connected as shown in FIG.
A joining plate 18 with a plurality of bolt insertion holes 17 having the same size and the same number and arrangement as the bolt insertion holes 16 of the end plate 15 is used, and is bolted by the joining bolts 14. It is composed of

Next, an example of joining the columns 1 and 2 and the beams 3 and 4 will be explained.

First, before butting together the joint ends 1A, 2A of the upper and lower columns 1, 2,
For example, within the joint end of either one of the pillars 1
Insert one end side of each of the four tap plates 9 into the joint end 1A of the tap plate 9, pass the temporary fixing bolt 13 through the bolt insertion hole 8 of the joint end 1A, and screw it into the screw hole 11 of the tap plate 9. 9 are temporarily fixed. Next, the joint end 1A of column 1 and the joint end 2A of column 2.
In this state, the remaining temporary fixing bolt 13 is passed through the bolt insertion hole 8 of the joint end 2A of the column 2 and screwed into the screw hole 11 of the tap plate 9, thereby temporarily connecting the columns 1 and 2. When the columns 1 and 2 are temporarily connected by the tap plate 9 and the temporary fixing bolt 13, the remaining bolt insertion holes 7 of the joint ends 1A and 2A and the remaining screw holes 10 of the tap plate 9 are connected.
are in agreement with each other. It is of course possible to perform this temporary connection work by suspending the pillar 2 with the pillar 1 erected in advance, but from the viewpoint of workability and safety, it is best to perform this work at or near the construction site. It is convenient to perform this with the columns 1 and 2 placed horizontally.

Once columns 1 and 2 are temporarily connected in this way, they are erected at the desired location, and then beams 3 and 4 are lifted simultaneously or separately and are brought into contact with the sides of the joints of columns 1 and 2, respectively. While positioning, as shown in FIG. 2, the required number of connecting bolts 14 are passed through the bolt insertion holes 16 of the beam and the bolt insertion holes 7 of the column, and are sequentially screwed into the screw holes 10 of the tap plate 9 for temporary tightening. At this time, the joint plate 18 is applied to each of the side parts (in the embodiment, two places) where the beams 3 and 4 are not joined, and the joint bolts 14 are sequentially screwed into the screw holes 10 of the tap plate 9 and temporarily tightened. This work of attaching the joint plate 18 may be performed before the pillar is erected. After completing the temporary tightening in this way, tighten each of the connecting bolts 14 to the specified torque, then the upper and lower columns 1]
2 and the beams 3 and 4 are integrally and firmly joined.

As can be understood from the above work procedure, the upper and lower columns 1 and 2 can be easily temporarily connected by bolting via the tap plate 9 without welding at the construction site. Connecting beams to pillars can be done by simply screwing in bolts. That is, the tap plate 9 and the temporary bolt 13
By first temporarily connecting the columns 1 and 2, it is possible to make the bolt insertion holes 7 of the columns 1 and 2 and the screw holes 10 of the tap plate 9 coincide with each other at the same time as the temporary connection. As a result, when connecting the beams 3 and 4, the connecting bolt 14
It is sufficient to simply pass the bolt through the bolt insertion hole 16 of the beam and the bolt insertion hole 7 of the column in this order and screw it into the screw hole 10 of the tap plate. At this time, since the head of each temporary bolt 13 does not protrude from the side surface of the column, these temporary bolts 13 do not interfere with the end plate 15 that constitutes the joint end of the beam. The columns and beams are joined together in a uniform state, resulting in good stress transmission between the columns and beams.

In addition, in the example, the case where the number of beams connected to the column is two was explained, but for example, the number of beams connected to the column is four.
In the case of a book, as shown in Fig. 4, the number of tap plates 9 required to connect the beams is naturally four, and in that case, as in the example shown in Fig. 2, adjacent tap plates It is desirable that both sides of each tap plate 9 be tapered by about 45 degrees as shown in the illustrated example so that the tap plates 9 do not interfere with each other and can be stably accommodated on the inner wall of the joint end of the pillar. In addition, in the example, an example was shown in which an I-beam steel beam was used as the beam, but it is of course possible to use a rectangular or cylindrical beam as long as the beam has an end plate with a bolt insertion hole. It is.

"Effects of the Invention" As explained above, the present invention has a joint end with a bolt insertion hole between upper and lower square steel pipe columns that are butt-joined in the axial direction, and a side surface of the joint between these upper and lower square steel pipe columns. A column-to-beam joint structure in which a joint end with a bolt insertion hole of an I-shaped steel beam to be joined is bolted to an upper and lower square steel pipe column through a tap plate with a screw hole extending between the upper and lower square steel pipe columns,
The bolts are of two types, temporary bolts and joint bolts, the bolt insertion holes of the upper and lower square steel pipe columns are provided in the side walls of the square steel pipe columns, and the tap plate is inserted into the bolt insertion holes of the upper and lower square steel pipe columns. The joint bolts are fixed by temporary bolts screwed into the screw holes of the tap plate, and the heads of the temporary bolts are located in the bolt insertion holes of the square steel pipe columns. Since the configuration is such that the bolts pass through the bolt insertion holes and the bolt insertion holes of the square steel pipe column and are screwed into the screw holes of the tap plate, the remaining bolts of the upper and lower columns can be temporarily connected by the tap plate and temporary bolts at the same time. Both the insertion holes and the remaining screw holes of the tap plate can be matched with each other. As a result, not only does it become unnecessary to weld columns together, but also when connecting beams, all you have to do is screw in the connecting bolts.
Moreover, by screwing in the connecting bolt in this way,
Since the beams can be connected to the columns and the columns can be easily connected to each other at the same time, work efficiency can be improved accordingly. In addition, since the configuration is such that only a tap plate with a relatively simple shape is used as a separate component, it is suitable for factory production, and it is easy to reduce costs, thereby producing various excellent effects.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, where Figure 1 is a longitudinal cross-sectional view of the main part, Figure 2 is a cross-sectional view of the main part, Figure 3 is a perspective view, and Figure 4 is a cross-sectional view of the main part. FIG. 3 is a cross-sectional view showing another embodiment of the present invention. 1, 2... Square steel pipe column (column), 1A, 2A...
Joint end, 3, 4... Steel beam, 7, 8, 16... Bolt insertion hole, 9... Tap plate, 10, 11...
...screw hole, 13...temporary fixing bolt, 14...coupling bolt.

Claims (1)

[Scope of utility model registration request] A joint end with a bolt insertion hole between upper and lower square steel pipe columns that are butt-joined in the axial direction, and a joint end with a bolt insertion hole of a steel beam that is joined from the side to the joint between these upper and lower square steel pipe columns. This is a joint structure in which columns and beams are connected by bolts through tap plates with screw holes extending between the upper and lower rectangular steel pipe columns. Bolt insertion holes of the square steel pipe columns are respectively provided in the side walls of the square steel pipe columns, and the tap plate is fixed by the temporary fixing bolts screwed into the screw holes of the tap plate from the bolt insertion holes of the upper and lower square steel pipe columns. The head of the temporary bolt is located in the bolt insertion hole of the square steel pipe column, and the connecting bolt passes through the bolt insertion hole of the steel beam and the bolt insertion hole of the square steel pipe column. Column and beam joint structure characterized by screwing into the screw hole of the tap plate.