JPS59224740A - Method and metal fittings for connecting pillar and beam - 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 The present invention relates to a method of joining a steel frame column having a box-shaped or round cross-sectional shape to a steel beam having a ""-shaped cross-sectional shape, and a joining hardware.

As an example of the conventional method of joining the shank and 11 type beams, the method 1 shown in FIG. 1 is used at Box sha. In the figure, 1 is a steel column with a box-shaped cross section, and 2 is a steel beam with an H-shaped cross section. In the case of this Fig. 1, the column 1 is cut at the joining position of the upper and lower flanges 2a of the beam 2, and the horizontal supplementary plate 3 is
The upper and lower flanges 2a of the short beam 2 are welded to each side of the horizontal supplementary plate 3 at the factory, and the web 21 is also welded at the factory. After transporting it to the site and placing it in place, pillar 1
A long beam 2 is spanned between the short beams 2 welded together, and the joints are connected to splice sprays i to 4 and bolts 5 by J.

However, with this conventional method, is it possible to cut the first part horizontally?
The rigid plate 3 must be inserted into the cut point and welded, and the λ0-shaped beam 2 must be welded to the column 1 by providing a scallop 2G@ on its edge, which reduces the number of processing steps. In addition to the large number of parts and the increased cost, there was also the disadvantage that cutting and welding the steel frame was not desirable in terms of the precision of the steel frame.

The present invention has been made to overcome the above-mentioned drawbacks.
By using special joining hardware, it is possible to simply and easily join the pillar and the 1" beam with less man-hours without cutting the shaft and the beam, and it also reduces costs. The purpose is to further increase the accuracy J5 and strength of the steel structure.

The present invention will be explained in detail below with reference to FIGS. 2 to 8. In the figure, the same reference numerals as the above-mentioned reference numerals indicate equivalent parts.

A is a joining hardware of the present invention, and as shown in detail in FIG. As shown in FIG. 2(a), the flange portions 7 that move backward are provided at an angle of 45° with respect to the joint surface. A horizontal overhanging plate 8 is provided protruding from the flange 2a of the beam 2, and a hole 9 is provided in the horizontal overhanging plate 8 to the pole 1 for joining with the flange 2a of the beam 2. The portion 7 is also provided with a bolt hole 10 for connection with an adjacent joining hardware.

The height of the base plate 6 of this joining hardware A in the vertical direction is
The height may be smaller than the height of the flange portions 7 on both sides, and may be the same as the surface of the horizontally extending plate 8 in some cases. Therefore, the upper and lower edges of the base plate 6 are recessed from the flange portion 7.

Further, the planar shape of the horizontally extending plate 8 is such that the central portion 8a protrudes along the flange 2a of the beam 2, and both side edges 8b are the ends of the flange portion 7, as shown in FIG. 2(a). -), and the shape is widened by about 45 degrees with respect to the axis of the beam 2.

Further, it is preferable that the connecting portion 11 between the horizontally extending plate 8, the base plate 6, and the flange portion 7 has a curved surface to prevent concentration of stress. Reference numeral 12 in FIG. 4 is a pedestal for making the seating surface of the bolt hole 10 flat.

In addition, B shown in FIGS. 3 and 5 indicates the beam 2 to be joined.
This shows the joining hardware to be joined to the wall of Column 1 which does not have a
It has the same structure as the joining hardware A described above, except for the horizontally extending plate 8. That is, the same symbol as the above-mentioned - symbol indicates the same thing. And horizontally extending plate 8' of this joining hardware B
When compared with the horizontally extending plate 8 of hardware A, the central protruding portion 8a
There is no bolt hole 9, and there is no bolt hole 9.

The above-mentioned joining hardware A and B are integrally formed by casting, die forging, or a combination of rolling and welding.

Moreover, FIGS. 6 to 8 show the case where the cross-sectional shape of the pillar 1 is round, and in this case, the joining hardware A' and B' are different from the aforementioned joining hardware Δ and B. The difference is that the 1 and 6 parts are curved, and the other parts have the same structure. Therefore, corresponding parts are given the same reference numerals and their explanation will be omitted.

Next, a method for joining a box column and a beam according to the present invention will be explained with reference to FIGS. 2 and 3.

In other words, first, at the lower end of the beam joint position of box column 1,
Attach the joining hardware Δ or B that supports the lower surface of the beam 2, and connect the flange parts 7 together with high-strength bolts 13,
Build pillar 1 in this state. Next, the beam 2 is placed on the horizontally extending plate 8 of the lower joining hardware A, and then the upper joining hardware A is placed on the upper flange 2a of the beam 2. At the same time, the flange portions 7 of the upper joining hardware A or B placed around the pillar 1 are connected to high cavities 1 to 1.
3, and then the horizontally extending plates 8 of the upper and lower joining metal fittings A and the upper and lower flanges 2a of the beam 2 are connected with high-strength bolts 13 (including the nuts 1 and washers).

Note that, if necessary, the connecting plate 14 may be fixed to the end of the web 21) of the beam 2 with high-strength bolts 13, and the edge of this connecting plate 14 and the wall surface of the column 1 may be welded. .

FIG. 2 shows an embodiment in which beams 2 are joined to the box pillar 1 from each of the four sides, and the joining hardware used in this case is approximately Δ.

On the other hand, Fig. 3 shows an example in which the beam 2 is connected to the box column 1 from only two directions, and in this case, the joining hardware B is used for the part where the beam 2 is not present. .

Even when this joining hardware B is used, it is the same to connect the adjacent 7 flange portions 7 with bolts.

Fig. 6 shows an example of joining the pillar 1 and the beam 2 when the pillar 1 is round.
Except for using the joining hardware A', B' shown in FIG.

Since the present invention is as described above, special joining hardware A,
By using A', B, and B', you can easily and easily connect the pillars 1 and 1 without cutting the pillars 1 and 2.
” can be joined with the shape beam 2 with a small number of man-hours. Therefore, according to the present invention, it is possible to significantly improve work efficiency and reduce costs. Furthermore, according to the present invention, since there is no need to cut the shells and beams short, it is possible to improve the quality of the steel structure. Joining hardware A of the civil engineering invention
, A', as shown in the plan view of the horizontally extending plate 8, the area is large and the flange portions 7 of the connecting metal fittings that cover the adjacent parts are connected by high-strength bolts 13, so that there is The rigidity of the joints is increased, and the rigidity in the horizontal direction in particular is significantly increased.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of the conventional method of joining box columns and beams, FIG. 2(a) is a plan view showing the joining method of the present invention, and FIG.
b) is an elevational view thereof, FIG. 3(a) is a plan view showing a modification of the joint according to the present invention, FIG. 3(b) is an elevational view thereof, and FIG. 4 is a joint hardware of the present invention. Fig. 5 is a perspective view of the joining hardware used in the part without beams, Fig. 6 (a) shows the joint part in the case of a round column; ) is an elevational view thereof, FIG. 7 is a perspective view of the joining hardware shown in FIG. 6, and FIG. 8 is a perspective view of the joining hardware used for the part without a beam. 1...Column 2...1'' shape 3...
・Horizontal stiffening plate 4... Splice plate 5...
・Pol 1-6... Base plate 7... 7 lunge part 8... Horizontal overhang plate 9.10
... Pole 1 to hole 11 ... Connection part 12 ... Pedestal 13 ... High-strength bolt 14 ... Connection plates A, B, A', B' ... Hardware for joining. Figure 2 Figure 3 (a) (b) Figure 6 (a) (b)

Claims (1)

[Claims] 1. When joining a beam with an H-shaped cross section to a steel column, seven flange portions are provided on each of the left and right sides of the base plate that connects to the wall surface of the column, and the flange portions on both sides and the base plate are A horizontal protrusion is provided on the back of the beam that overlaps with the 7 flange of the beam, and this horizontal protrusion plate is provided with bolt holes for joining with the flange of the beam, and is also adjacent to the flanges on both sides. The joining hardware with bolt holes for connection with the joining hardware is installed above and below the beam joining position of the column, and the 7 lunges of the beam are inserted between the horizontal extension plates of these upper and lower joining hardware. Connect the horizontally extending plate with bolts, and then attach the adjacent joining hardware 7.
A method of joining pillars and beams, which is characterized by bolting and overlapping the lunge parts. 2. Provide flanges on both the left and right sides of the base plate that connects with the wall of the column, and provide horizontal extension plates protruding from the flange parts on both sides and the back of the base plate to overlap with the 7 langes of the beams. Pol 1 for joining the flange of the beam to the board
A metal fitting for joining a pillar and a beam, which is provided with a hole in the flange part and also has one hole in the flanges on both sides for connection with the adjacent metal fitting.