JPH1058192A - Welding joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding joint that facilitates welding of an end plate to the part of a column, a beam, etc., for joining to other member. SOLUTION: This welding joint 11 which is applied to the rear side of a connecting part 3a in the manner of projecting from that part 3a to the end plate 5 side and which receives a weld metal between the connecting part 3a and the end plate 5, at the time of welding the end plate 5 to the part 3a of a column, a beam 3, etc., for connecting with other member is provided integrally with the end tab 13 that bends nearly perpendicularly upward from the end in the width direction along that of the connecting part 3a. The size in the width direction of the welding joint 11 that is defined as less than that of the end late 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welded joint used for welding an end plate to a connection portion between a pillar or a beam of a house and another member.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, when a beam 3 is connected to a connecting portion 2 (connection) of a pillar 1 of a house, the connecting portion 2 made of H-shaped steel and the end of the beam 3 are connected to each other. End plates 4 and 5 are welded to each other, and the end plates 4 and 5 are connected to each other by bolts 6 and nuts (not shown). Hereinafter, a procedure of welding the end plate 5 to the horizontal flange 3a of the beam 3 will be described with reference to FIGS.

The flange 3a has an inclined surface 3 at its front end.
b, and the width of the flange 3 a is set smaller than the width of the end plate 5. At the time of welding, a welding joint 7 (backing metal for welding) wider than the end plate 5 is applied to the lower surface side of the flange 3a, and this welding joint 7 is
a and slightly project from the end plate 5 to the end plate 5 side, and with a predetermined distance L (see FIG. 7) between the flange 3 a and the end plate 5, the welding joint 7 is connected to the lower surface of the flange 3 a and the end plate 5. Are assembled and welded to the rear surface 5a.

Subsequently, a first end tab 8 having the same inclined surface 8a as the inclined surface 3b is assembled and welded to the upper surface of the welding joint 7 on the outer side of the widthwise end of the flange 3a. The second end tab 9 is attached to the end plate 5 such that the rear surface 9a is substantially flush with the rear surface 5a of the end plate 5 and the rear surface 9a is in contact with the weld joint 7 at the upper end of the side end surface of the end plate 5. Assembled and welded.

[0005] Thereafter, the welding is performed by filling the groove 10 formed by the flange 3a, the end plate 5, the welding joint 7 and the end tabs 8 and 9 with a welding metal by arc welding or the like. The reason why the width of the welding joint 7 is set to be wider than the width of the end plate 5 and the end tabs 8 and 9 are used at the end in the width direction of the welding joint 7 is that the groove 10 is formed from the widthwise end of the groove 10 at the time of the main welding. While preventing the overflow of the weld metal to the outside, the weld metal is sufficiently filled also in the vicinity of the width direction ends of the end plate 5 and the flange 3a,
This is to ensure welding strength.

After the main welding, in order to prevent the welding joint 7 and the end tabs 8 and 9 from interfering with other members, as shown in FIG.
Then, the protrusions of the end tabs 8 and 9 are cut and removed.

[0007]

However, in the method of welding the end plate 5 described above, it takes time and effort to assemble and weld the end tabs 8 and 9, and when the welding positions of the end tabs 8 and 9 are shifted, the main welding is performed. Disadvantages such as a decrease in the strength of the steel sheet. In addition, after the main welding, not only additional work is required to cut off the protruding portions of the welding joint 7 and the end tabs 8 and 9, but also two kinds of members of the welding joint 7 and the end tabs 8 and 9 are used for assisting welding. Therefore, there is a problem that the number of parts increases and management of these members becomes complicated.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a welded joint capable of easily welding a connection portion with another member such as a column or a beam and an end plate. I do. Therefore, the welding joint of the present invention is applied to the back surface side of the connection portion so as to protrude from the connection portion to the end plate side when welding the end plate to the connection portion with another member in the column or the beam. In a welded joint that receives a weld metal between the connection portion and the end plate, the welded joint integrally has an end tab portion that bends substantially vertically upward from a widthwise end thereof along a widthwise end of the connection portion. The width dimension of the weld joint is equal to or smaller than the width dimension of the end plate.

When an end plate is welded to a connecting portion such as a column or a beam using the welding joint, first, the welding joint is applied to the back surface of the connecting portion and slightly protrudes toward the end plate. In this state, the welding joint is assembled and welded to the connection portion and the end plate, respectively. At this time, the end tab, which is bent substantially vertically upward from the widthwise end of the welded joint, comes into contact with the widthwise end of the connecting portion while sandwiching the widthwise end of the connecting portion from the outside.

Subsequently, the welding is performed by filling a groove formed by the connecting portion, the end plate, the welded joint, and the end tab portion of the welded joint with a weld metal. In this case, the end tab portion prevents the weld metal from overflowing from the width direction end of the weld joint. Since the width dimension of the weld joint is equal to or smaller than the width dimension of the end plate, the weld joint does not protrude outward in the width direction of the end plate, and therefore, it is not necessary to cut off the weld joint after the main welding. .

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a welded joint 11 (backing metal for welding) of the present embodiment is made of a metal such as steel, and has a horizontally extending welded joint body 12 and both end portions in the width direction of the welded joint body 12. And an end tab 13 that is bent at a right angle from the end. The end tab 13 is bent perpendicularly upward at a right angle to the welded joint body 12.

The amount P of protrusion of the end tab portion 13 from the upper surface of the welded joint body 12 is set to be equal to the thickness T of the flange 3a (see FIG. 3) of the beam 3. The width dimension B1 of the welded joint body 12 is set to be equal to the widthwise dimension B2 of the flange 3a (see FIG. 2), and the overall widthwise dimension B3 of the welded joint 11 including the end tab 13 is equal to the end. It is set smaller than the width dimension B4 of the plate 5. Since the beams 3 and the end plates 5 shown in FIGS. 2 and 3 have the same configuration as that of the conventional example, the same portions are denoted by the same reference numerals.

The end plate 5 is provided with a plurality of bolt holes 5b for bolt connection with a column side end plate (not shown), while the upper end and the lower end of the front end of the vertical portion 3b of the beam 3 are formed at the end. And weld joint 11 up and down 1
For example, an arc-shaped notch 3c is formed so as to be able to follow each back surface side of the pair of flanges 3a.

When the end plate 5 is welded to the upper flange 3a (the connection with the column) using the welding joint 11, first, the welding joint body 12 is applied to the lower surface (back surface) of the flange 3a. The front portion of the welded joint 11 is projected toward the end plate 5 with the end tab portion 13 abutting on the side end surface of the flange 3a. Then, for example, the welding joint body 12 of the welding joint 11 is assembled and welded to the lower surface of the flange 3a and the rear surface 5a of the end plate 5 at positions indicated by hatchings C and D in FIG. In this case, the upper surfaces of the flange 3a, the end tab portion 13, and the end plate 5 are substantially flush.

Subsequently, the welding is performed by filling the groove 3 formed by the flange 3a, the end plate 5, the welding joint body 12 and the end tab portion 13 with a welding metal by arc welding or the like. Since both end portions of the groove 14 in the width direction are closed by the end tab portions 13, the weld metal does not leak outside from both end portions of the groove 14 in the width direction, and the width dimension B3 of the weld joint 11 is an end plate. Since it is smaller than the width dimension B4 of No. 5, it is not necessary to cut off the width direction end of the welded joint 11 after the main welding. After welding one flange 3a of the beam 3 to the end plate 5,
Similarly, the other flange 3a is also welded to the end plate 5.

Table 1 below shows an example of conditions for the main welding and examples of materials of the beam 3, the end plate 5, and the weld metal.

[0017]

[Table 1]

As described in the column of rod-handling method in Table 1, the welding torch 15 shown in FIG.
The welding of the first layer is performed by moving the groove 14 in FIG. 4 from the left end to the right end as shown by the arrow, and then, the moving direction of the welding torch 15 is reversed, and the right end of the groove 14 is moved. When welding the second layer by moving from the part to the left end, after starting the arc at the left end of the groove 14, the welding torch 15 is stopped at that position for about 0.5 seconds, Of the welding joint 11 at the start end of the main welding.
This has the advantage that the main welding can be performed uniformly at each part of the welded joint 11. On the other hand, if the welding torch 15 is immediately started to move rightward in the groove 14 after the arc start at the left end of the groove 14, there is a possibility that insufficient penetration of the weld metal occurs at the start end, which is not preferable. .

In the above embodiment, the flange 3a of the beam 3
Although the case where the end plate 5 is welded is described above, the same welding joint 11 is also used when the end plate is welded to the connection portion on the column side or when the end plate is welded to a member such as a beam connection. Can be used.

[0020]

As described above, when the end plate is welded to a connection portion of a column or a beam with another member, the welding joint of the present invention is provided on the back side of the connection portion from the connection portion to the end plate side. In a welded joint which is applied so as to protrude and receives a weld metal between the connecting portion and the end plate, the welded joint is bent substantially vertically upward from a widthwise end thereof along a widthwise end of the connecting portion. Since the end tab part is integrally formed and the width dimension of the weld joint is set to be equal to or less than the width dimension of the end plate, the weld joint is temporarily fixed to the connection part and the end plate by welding or the like. After that, when performing welding by filling a weld metal into the groove formed by the connection portion, the end plate, the welded joint and the end tab portion of the welded joint, Since the end tab portion prevents the weld metal from overflowing from the width direction end of the welded joint, the main welding can be performed smoothly, and the widthwise dimension of the welded joint is in the width direction of the end plate. Since it is smaller than the dimensions, the welded joint does not protrude outward in the width direction of the end plate, and therefore, it is not necessary to cut off the welded joint after the main welding, and the advantage that the labor required for welding the end plate is reduced. is there.

Further, since the end tab portion is formed integrally with the welded joint, the time and effort of assembling the end tab separately from the welded joint and temporarily fixing the same by welding or the like are unnecessary, and the end tab is temporarily fixed independently. Unlike the case, in the present invention, the positional displacement of the end tab portion with respect to the weld joint does not occur, so that there is an advantage that the accuracy of the main welding is increased.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a welded joint according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the welding joint is assembled and welded to a beam and an end plate.

FIG. 3 is a vertical sectional view taken along the line II-II of FIG. 2;

FIG. 4 is a perspective view showing a state in which an end plate is fully welded to a beam using the welding joint.

FIG. 5 is a perspective view showing a connection portion between a pillar and a beam of a house.

FIG. 6 is a perspective view showing a state where an end plate is welded to a beam using a conventional welding joint.

FIG. 7 is a partial plan view corresponding to FIG. 6;

[Explanation of symbols]

 3 Beam 3a Flange (Connection) 11 Weld Joint 13 End Tab

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Norio Mizutani 1-1-88, Oyodonaka, Kita-ku, Osaka City Inside Sekisui House Co., Ltd. (72) Inventor Masato Kudo 1-188, Oyodonaka, Kita-ku, Osaka City No. Sekisui House Co., Ltd.

Claims (1)

[Claims] 1. When welding an end plate to a connection portion of a column or a beam to another member, the end plate is applied to the back surface of the connection portion so as to protrude from the connection portion toward the end plate. A weld joint for receiving a weld metal between end plates, wherein the weld joint integrally has an end tab portion that is bent substantially vertically upward from a width direction end thereof along a width direction end of the connection portion. A widthwise dimension of the welded joint is equal to or smaller than a widthwise dimension of the end plate.