JPS6114917B2 - - Google Patents

Description

Detailed Description of the Invention The present invention provides a method for joining the end of a beam made of I-shaped steel with bolts in contact with a side plate provided on the side of another beam, a side of a support, etc. The present invention relates to a method of manufacturing a beam with end plates provided with end plates.

Conventionally, in order to attach an end plate to the end of a beam made of I-shaped steel, for example, as shown in FIG. The piece 7a is placed along the edge 12a of the upper chord 1a so that its outer end slightly protrudes from the edge 12a of the upper chord 1a, and the lower joining piece 10a is attached to the end surface 9a of the lower chord 2a, and its outer end is attached to the edge of the lower chord 2a. Part 13
After the upper end 5a of the end plate 11a is aligned with the outer end of the upper joint piece 7a, and the lower end 8a of the end plate 11a is
are respectively joined to the protruding outer ends of the lower joint piece 10a to determine the mounting position of the end plate 11a, and in this state, the upper end 5a of the end plate 11a is connected to the outer end of the upper joint piece 7a and the upper chord member. 1a
and the end plate 11a.
The lower end 8a of the outer end of the lower joint piece 10a and the lower chord member 2
The end plate 11a was attached to the end portion 4a of the beam member 3a by welding and integrating the end plate 11a with the end edge portion 13a of the beam member 3a.

Therefore, when attaching a plate to the end of a beam, it is troublesome to position the end plate through the upper and lower joint pieces, and when welding, it is difficult to position the plate through the upper and lower joint pieces. Because the welding work must be done while supporting the end plates, the welding process is time-consuming and costly. Because they are bonded together, they have low strength and cannot withstand large loads.

In view of these conventional drawbacks, an object of the present invention is to form an upper joint piece and a lower joint piece on the end plate by integrally bending them, thereby improving the positioning and alignment during the installation of the end plate. To provide a method for manufacturing a beam with end plates that simplifies welding work and promotes cost reduction, while also having high attachment strength of the end plates and capable of withstanding a large load.

The feature of the manufacturing method of the beam with end plate of the present invention is that the end portion 4 of the beam material 3 is made of a cross-sectional I-shaped steel, with the upper chord material 1 on the upper edge and the lower chord material 2 on the lower edge. , a horizontal upper joint piece 7 that joins to the end back surface 6 of the upper chord member 1 at a slightly lower position on the upper end 5 side, and a horizontal upper joint piece 7 that joins to the end surface 9 of the lower chord member 2 at a slightly upper position on the lower end 8 side. A first step of fitting and positioning the substantially U-shaped end plate 11 formed integrally with the lower joint piece 10; Also, the end plate 1
1 to the end edges 13 of the lower chord material 2, respectively.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 and 2. Reference numeral 3 denotes a beam material;
It is made of I-shaped steel in cross section, with a horizontal upper chord member 1 at the upper edge of the web portion and a horizontal lower chord member 2 at the lower edge of the web portion. Reference numeral 11 denotes an end plate to be attached to the end 4 of the beam 3, and a horizontal upper joint piece 7 to be joined to the back surface 6 of the end of the upper chord member 1 is located at a slightly lower position on one side of the upper end 5 of the end plate 11. , lower end 8
A horizontal lower joint piece 10 that is joined to the end surface 9 of the lower chord member 2 is integrally bent at a slightly upper position.

An end plate 1 is attached to the end 4 of the beam 3.
To install beam 3, as shown in Figure 2,
, the upper joint piece 7 of the end plate 11 is attached to the end back surface 6 of the upper chord member 1, and the end plate 1
The lower joining pieces 10 of 1 are joined to the end surface 9 of the lower chord member 2, and the end plate 11 is fitted, and in this state, the upper end 5 of the end plate 11 is connected to the edge portion 12 of the upper chord member 1, In addition, the lower end 8 of the end plate 11
The mounting position of the end plate 11 is determined by moving the end plate 11 toward and away from the end edge 13 of the lower chord member 2, the upper joint piece 7, and the lower joint piece 10 as guides. Next, once the mounting position of the end plate 11 is determined in this way, the upper end 5 of the end plate 11 is attached to the edge 12 of the upper chord member 1, and the end plate 11 is
1 are welded 14 to the end edges 13 of the lower chord material 2, respectively.

In this way, the present invention positions the end plate to be attached to the end of the beam by using the upper joint piece and the lower joint piece, which are integrally bent on the end plate, as guides. Positioning when installing the plate can be done with a single touch, and there is no need to support the end plate while welding, which simplifies the positioning and welding work of the end plate and greatly contributes to lower manufacturing costs. .

In addition, the end plate welded to the end of the beam material is reinforced at its upper and lower ends by the upper joint piece and the lower joint piece that are bent integrally with the end plate, and the upper and lower joint pieces Since it is stably supported by the joint piece, the mounting strength of the end plate is also greatly improved.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the beam and the end plate, Figure 2 is a side view showing how the end plate is attached, and Figure 3 is a side view of a conventional example showing how the end plate is attached. It is. 1... Upper chord material, 2... Lower chord material, 3... Beam material, 4... End part, 5... Upper end, 6... End back surface, 7... Upper joint piece,
8... Lower end, 9... End surface, 10... Lower joint piece, 1
1... End plate, 12, 13... End edge, 14...
welding.

Claims (1)

[Claims] 1 At the end 4 of a beam 3 made of cross-sectional I-shaped steel with the upper chord 1 stretched on the upper edge and the lower chord 2 stretched on the lower edge, the back side of the end of the upper chord 1 is placed at a slightly lower position on one side of the upper end 5. A substantially U-shaped end is formed by integrally bending a horizontal upper joining piece 7 to be joined to the lower end 8 and a lower joining piece 10 to be joined to the end surface 9 of the lower chord member 2 at a slightly upper position on one side of the lower end 8. A first step of fitting and positioning the end plate 11, the upper end 5 of the end plate 11 is connected to the edge 12 of the upper chord member 1, and the lower end 8 of the end plate 11 is connected to the end edge of the lower chord member 2. 1. A method for manufacturing a beam with end plates, characterized by comprising a second step of welding to each end plate.