JPS5924722Y2 - joining metal fittings - Google Patents

Description

[Detailed description of the invention] This invention relates to a joining fitting used when adding a second floor to a lightweight steel frame one-story house.

Conventionally, as shown in FIG. 1, when adding a second floor 2 to a lightweight steel frame one-story house 1, the columns and beams that form the frame of the building are joined in the following manner.

In other words, as shown in Figure 2, the existing lightweight steel frame Heike 1
The frame consists of a pair of two culverts 4 (one not shown) made of approximately I-shaped steel, arranged perpendicular to each other, on the upper part of two adjacent sides of a first-floor column 3 made of closed-top square shaped steel. It is fixed with bolts 6 via an end plate 5 welded to the end face in advance.

To assemble the second floor frame on top of this, first fix the U-shaped second floor column support 7 to the upper end surface of the first floor column 3 with bolts 8, and then insert the square steel second floor column 9 into the recess on its lower surface. The second floor column holder 7 is fitted and erected on the upper end surface of the first floor column 3.

Thereafter, a pair of two underdrains 11 (one not shown), each made of section steel and having an end plate 10 welded to its end face, are placed on the upper surfaces of the two underdrains 4, with the two underdrains 11 being orthogonally arranged to each other. and each end plate 1
0 to the lower part of the two adjacent sides of the second floor column 9, and the lower part of the end plate 10 is fixed to the second floor column support 7 along with the second floor column 9 with bolts 12, and the end plate 1
The upper part of 0 is fixed to the second floor column 9 with bolts 13.

Note that the lower flange 11a of the second culvert 11 and the upper flange 4a of the first culvert 4 are bolts 14 and nuts 1, respectively.
5 (shown in Figure 3).

However, since the second floor column holder 7 merely connects the first floor column 3 and the second floor column 9, there was a problem in that the joint strength between the first floor column 3 and the second floor column 9 was weak.

Therefore, the purpose of this invention is to provide a joining fitting that can improve the joining strength between the first floor column and the second floor column.

An embodiment of this invention will be described with reference to FIGS. 4 to 6.

That is, as shown in FIG. 4, this joining fitting has a pair of upper vertical pieces 25, 25 and a pair of lower vertical pieces 26, 2 on the upper and lower surfaces of the prismatic body 24 adjacent to each other 211!
6 are protruded orthogonally to each other, and a flange fitting slit 27 is formed between these upper and lower vertical pieces 25 and 26, and a bolt insertion hole 28 is provided in each of the upper and lower vertical pieces 25 and 26. ing.

As shown in FIG. 5 and FIG.
On a lightweight steel-framed one-story house in which a pair of first-floor beams 4 are orthogonally connected to the upper part of the two orthogonal sides of the story column 3, a second-story column 9 is placed on the first-floor column 3, and a pair of first-story beams 4 are placed on the first-floor culvert 4. second floor beam 1
1 is used when expanding the second floor by placing the second floor beams 11 respectively in the flange fitting slits 27 and 27 of the joint fittings 17, as shown in Fig. 6. The lower flange 11a and the upper flange 4a of the first floor beam 4 are fitted together, and the upper vertical piece 2 is assembled as shown in FIG.
5゜25, respectively) 10. Fix it to the lower part of the two adjacent sides of the second floor column 9 with bolts 29 and nuts 30 through 10, and lower vertical pieces 26 and 26 through end plates 5 and 5, respectively. It is fixed to the upper part of two adjacent sides of the first floor column 3 using bolts 29 and nuts 30.

In this way, this joining metal fitting 17 has a fitting slit 27.
With the upper flange 4a of the first floor beam 4 and the lower flange 11a of the second floor beam 11 fitted together, the upper vertical piece 25 is fixed to the second floor column 9, and the lower vertical piece 26 is attached to the first floor column 3. Since it can be fixed, the vertical load acting on the connection between the first floor column 3 and the second floor column 9 can be shared and supported by the first floor beam 4 and the second floor beam 11, and the first floor column 3 and the second floor column 9 It is possible to increase the bonding strength of

In addition, in order to reinforce the joint on the protruding corner side of the second floor column 9 and the first floor column 3, another joint fitting 17' (shown in FIG. 5) having the same configuration as the above-mentioned joining fitting 17 is prepared. The upper vertical piece is fixed to the second floor column 9, and the lower vertical piece is fixed to the second floor column 9.
Just fix it to the floor pillar 3.

The joining fittings 16 shown in FIGS. 7 and 8 are used to join the first floor beam 4 and the second floor beam 11, as shown in FIG. It has an approximately hat shape with outer flanges 19 and 20, and triangular reinforcing ribs 21 are arranged on the outer surfaces of the outer flanges 19 and 20.
Bolt insertion holes 22 are formed on both sides of 1.

The connection between the second floor beam 11 and the first floor beam 4 using the joining fittings 16 is achieved by placing a pair of joining fittings 16 on both sides of the second floor beam 11 and the first floor beam 4, as shown in FIGS. Shape fitting piece 18
While fitting and gripping the lower flange 11a of the second floor beam 11 and the upper flange 4a of the first floor beam 4, the outer flange 19,
20 to the webs of the second floor beam 11 and the first floor beam 4, respectively.
Bolt insertion holes (not shown) provided in b and 4b are respectively penetrated and nuts (not shown) are fastened.

If this joining fitting 16 is used, the lower flange 11a of the second floor beam 11 and the upper flange 4a of the first floor beam 4 can be fitted and held over a wide area by the U-shaped fitting pieces 18 of both joining fittings 16. Even if a large load is applied to the floor beam 11 and the first floor beam 4, local deformation will not occur in the beams 11 and 4.

As described above, according to the joint fitting of this invention, by fitting the upper flange of the 1st floor beam and the lower flange of the 2nd floor beam into the fitting slit, it acts on the joint between the 1st floor column and the 2nd floor column. Since the vertical load can be shared and supported by the first and second floor beams, it is possible to increase the joint strength between the first and second floor columns.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional building, Fig. 2 is an enlarged perspective view of its main parts, Fig. 3 is a sectional view thereof, Fig. 4 is a perspective view of an embodiment of this invention, and Fig. 5 is its use. Sectional view showing the state, No. 6
7 is a front view showing a joint fitting for connecting beams, FIG. 8 is a side view thereof, and FIG. 9 is a perspective view showing its usage state. 3...1st floor column, 4...1st floor beam, 4a.
...Top flange, 5.10...End plate, 9...2nd floor column, 11...2
Floor beam, 11 a...Lower flange, 17...
...Joining metal fitting, 24...Prismatic body, 25.
... Upper vertical piece, 26... Lower vertical piece,
27...Slit for flange fitting.

Claims (1)

[Scope of utility model registration request] The square steel first floor column and each end plate are attached to the above 1.
A pair of first-story steel beams with upper flanges are arranged perpendicularly to each other and facing the upper portions of two adjacent side surfaces of the story columns, a second-story square steel beam placed on the first-story columns, and their respective lower parts. A pair of two-story steel beams, each end plate of which is placed orthogonally to the lower part of two adjacent sides of the second-story column with the flanges placed on the upper flanges of both of the first-story steel beams. A joining fitting in which a pair of upper vertical pieces and a pair of lower vertical pieces are respectively orthogonally protruded from the upper and lower sides of the columnar body, and a slit for flange fitting is formed between these upper and lower vertical pieces, With the sheath-shaped upper and lower flanges fitted into each of these flange fitting slits,
The upper vertical piece is fixed to the two adjacent sides of the second-story column through the end plate of the second-story steel beam, and the lower side vertical piece is attached to the first-story column through the end plate of the first-story steel beam. Jointing metal fittings fixed to two adjacent sides of.