JPS61179935A - Pillar and beam connection structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a column-to-beam joint structure in a steel frame structure.

[Conventional technology]

Conventionally, in a steel frame structure, there is a structure described in Japanese Utility Model Publication No. 48-20897, for example, as a structure in which a steel column and a steel beam can be easily joined by bolt connection using joint members. In that case, approximately T
Steel beams with engineered cross sections are joined via joint members with shaped cross sections. The joining method is to bring the flange of the steel column and the flange of the joint member into contact and connect them with bolts, and then connect the web of the joint member and the web of the steel beam with bolts through a joint plate with bolt holes. ing.

(Problems to be Solved by the Invention) However, in the above joint structure, the steel column has an H-shaped cross section, and the bolt joint with the joint member can be performed by bolts and nuts passing through the flanges of both. When a steel column is hollow, such as a steel column with a hollow rectangular cross section, it is difficult to use a nut, and steel columns with an H-shaped cross section have a large difference in cross-sectional performance between the strong axis and weak axis directions, so the joining method and It also has the disadvantage of being limited in direction.

This invention makes it possible to connect a steel column with a hollow rectangular cross section and a steel column with a shaped cross section with bolts using a simple structure.
It was devised to provide sufficient strength to the joints.

[Means for solving problems]

The column-to-beam joint structure of the present invention is used to join a steel column with a hollow rectangular cross section, such as a square steel pipe, and a steel beam with a shaped cross section, such as an H-section steel, and uses T-section steel as the joint member. A reinforcing member with an L-shaped cross section provided with a screw hole is arranged on the inner surface of the steel column, and with the flange surface of the joint member aligned with the steel column, a bolt passing through these is inserted into the screw hole of the reinforcing member. Connect the joint member to the steel column by screwing it in.

The web of the joint member and the web of the steel beam can be joined via a joint plate.

〔Example〕

Next, the illustrated embodiment will be described.

Figures 1 to 3 show an exploded view of the joining process.
In the figure, 1 is a steel column with a hollow rectangular cross section made of square steel pipes, 2 is a steel beam made of H-beams, 3 is a joint member made of T-beams cut to predetermined dimensions, and 4 and 5 are the upper floors, respectively. and shows the vertical place on the lower floor.

As shown in Fig. 2, the inner surface of the steel column 1 has a
A reinforcing member 12 having an L-shaped cross section is arranged, and this reinforcing member 12 is provided with a screw hole 8e for screwing a bolt 8c. Note that this reinforcing member 12 can also be fixed to the inner surface of the steel column 1 in advance by welding or the like.

In assembling, the joint member 3 is first attached to the column 1 using the bolt 8c. Numerals 8a and 8b are bolt holes for this purpose, and the flange surface of the joint member 3 along the vertical direction is brought into contact with the outer surface of the column 1, and the bolt 8c is inserted into the bolt hole 8a through the washer 8d.

8b and into the screw hole 8e of the reinforcing member 12, the joint member 3 is joined to the column 1.

Further, on the upper part of the joint member 3, there is a beam support member 7 attached perpendicularly to both the flange surface and the web surface.
After the pillar 1 is erected, the upper flange of the beam 2 is placed on the beam support member 7 for temporary support.

Next, with the self-weight of the beam 2 held by the beam support member 7,
The beam 2 is joined to the joint member 3. This connection is performed using a joint plate 6 fixed to the web of the beam 2 by bolts 9C and nuts 9e passing through bolt holes 9a and 9b.

Thereafter, the battledore sheet metal parts of the vertical places 4 and 5 on the upper and lower floors are joined to the joint member 3 with bolts 10c and llc. This connection utilizes the bolt holes 10a and lla at the upper and lower ends of the joint member 3 and the bolt holes iob and ub in the battledore sheet metal.

FIGS. 4(a), (b), (c), and (d) show an example of the joint member 3 used in this invention.
A T-beam is cut to a predetermined length, and a bolt hole 8a is formed in the flange part that will be joined to the outer surface of the steel column 1, a bolt hole 9a is made in the middle of the web part that contacts the joining flange 6, and above and below it. Bolt holes 10a and ILa for attaching the vertical places 4 and 5 are drilled.

Moreover, the beam support member 7 is fixed to the upper part of the joint member 3 as described above.

Figure 5 (a), (b), (c), ('d)
shows another example of the joint member 3, in which the beam height of the steel beams 2 to be joined is small, there is no upper floor, and a vertical place is attached only to the lower side.

〔Effect of the invention〕

■ By screwing a bolt into the screw hole of a reinforcing member with an L-shaped cross section placed on the inner surface of a steel column, it becomes possible to bolt a joint member made of T-shaped steel to a steel column, even on a steel column with a hollow rectangular cross section. Furthermore, unlike the case of H-shaped cross-section columns, the joining direction is not limited.

■ Since a reinforcing member is inserted into the joint between the column and the joint member, the joint can have sufficient strength even if the wall thickness of the steel column is small.

■ The connection between columns and joint members, and the connections between joint members and beams and places are very simple structures, which can reduce production costs.

■ By using a web joint type beam, the beam load is smoothly transmitted to the columns, resulting in high structural reliability.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the invention, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4(a). (b), (c), and (d) are the plan view, front view, left side view, right side view, and fifth joint member, respectively.
Figures (a), (b), (c), and (d) are a plan view, a front view, a left side view, and a right side view showing other examples of the joint member, respectively. 1... Steel column, 2... Steel beam 3...
・Joint member, 4, 5...Vertical place 6
...Joint plate, 7...Beam support is member 8a
, 8b, 9a, 9b, 10a, 10b, lla,
11b=Bolt holes 8c, 9c, 10c, 1lc-bolts, 8d, 9d...Washers 9e...Nuts 12...Reinforcement members, 8e...Screw holes. Figure 1 Figure 4 (a) Figure 4 (C) Figure 4 (b) Figure 4 (d) Figure 5
Diagram (a)

Claims (1)

[Claims] (1) A reinforcing member with an L-shaped cross section with screw holes is arranged on the inner surface of the steel column with a hollow rectangular cross section, and the flange surface of the joint member made of T-shaped steel is aligned with the outer surface of the steel column, and the joint member and the steel frame Connecting the joint member to the steel column by screwing a bolt that passes through the column into the screw hole of the reinforcing member,
and a column-to-beam joint structure in which the web surface of the joint member and the web surface of a steel beam having an I-shaped cross section are joined via a joint plate, and the steel beam is joined to the joint member.