JP3168839U - Welding backing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new welding backing metal which makes temporary fixing installation work extremely easy when a diaphragm is obliquely abutted and welded to a column column end. SOLUTION: When a flat plate-shaped diaphragm 20 is butt-welded to an end portion of a column column 10 processed obliquely in the longitudinal direction so as to close the column column column 10, the inner surface of the column column 10 end portion is previously welded. The welding backing metal 100 installed along the column column 10 is tapered so that the diaphragm 20 is in close contact with the contact surface of the backing metal body protruding from the end of the column column 10. As a result, the cutting work after the temporary fixing installation is not required, so that the temporary fixing installation work is extremely easy when the diaphragm is diagonally abutted and welded to the column column end. [Selection diagram] Fig. 2

Description

  The present invention relates to a welding backing metal used when welding column columns and diaphragms constituting steel structures such as buildings, factories, and warehouses, and is particularly suitable for cases in which the column column ends are cut obliquely. It relates to a welding backing metal.

  Conventionally, a round steel pipe or a square steel pipe has been used for a column pillar constituting a steel structure such as a building, a factory, or a warehouse. Many of these column pillars are divided into column pillars and beam joint members for each floor, and a diaphragm is butt welded to the end of the column pillar, and a beam joint member is butt welded to the diaphragm. .

  When the diaphragm is butt-welded to the column column end in this way, a belt-like welding backing metal is installed along the inner side of the column column end, and the welding backing metal is installed from the outside of the column column. It is common to weld.

  Examples of conventional welding backing metal suitable for such applications include those disclosed in Patent Documents 1 and 2 below. That is, the backing metal disclosed in Patent Document 1 is provided with a plurality of notch grooves in the direction perpendicular to the longitudinal direction on the inner surface corresponding to the bent portion of the strip-shaped metal plate body. Then, the metal plate body can be easily bent into a shape along the inner surface of the corner portion of the rectangular column column by bending the metal plate body at that portion so that the plurality of cutout grooves are located inside. ing.

  On the other hand, the welded backing metal plate of the square column column disclosed in Patent Document 2 is formed with a group of grooves arranged in parallel at portions to be applied to the inner curved surface portion of each corner portion of the square column column. Yes. And the shape of these grooves is a shape in which both side surfaces of 50% or more of the depth are parallel, the remaining thickness is 1.5 to 2.5 mm, the number of grooves in a group is 4 or more, The width is 4 mm or less and the groove pitch is 2.75 mm or more, so that the operator can bend without using a jig and does not come off when robot welding is performed. Yes.

Japanese Utility Model Publication No. 63-157497 JP 2003-1544489 A

By the way, when combining diagonally tilted beam members on the end of a column pillar that is erected vertically, such as a gable roof or a steel frame of a single-flow roof, the end of the column pillar is inclined with respect to its longitudinal direction. It is necessary to butt-weld in a state where the diaphragm is inclined and the diaphragm is inclined.
However, in order to perform butt welding in such a form, a dedicated backing metal that matches the end of the column pillar is prepared in advance, and in order to ensure an accurate route gap with respect to the diaphragm surface, After temporarily installing the gold main body, it is necessary to cut the upper side corner and the lower side corner of the back main body, which requires a lot of labor and time for the temporary fixing installation work. .

  Therefore, the present invention has been devised to solve these problems. The purpose of the present invention is to provide a new structure that makes it very easy to install temporarily when a diaphragm is obliquely butted against the column column end. The purpose is to provide a welding backing.

In order to solve the above problems, the first device is
When a flat diaphragm is butt-welded to the end of a column pillar that is processed obliquely with respect to the longitudinal direction, welding that is continuously installed in advance along the inner surface of the column pillar end. A backing metal for welding, characterized in that a taper process is applied so that the diaphragm comes into close contact with a contact surface of a backing metal body protruding from an end of the column pillar. .

  According to the welding backing metal of the present invention having such a configuration, when the diaphragm is obliquely butted against the column column end, the work of cutting the upper side corner and the lower side corner of the backing body is performed. Is not necessary, so that temporary fixing installation work and the like are extremely easy.

  A second invention is a welding backing metal according to the first invention, wherein the backing metal body has a rectangular shape. According to such a configuration, the backing metal main body can be installed without a gap along the inner peripheral surface of the column pillar end portion having the rectangular cross section which is most frequently used at present.

  A third invention is a welding backing metal according to the second invention, wherein the backing metal body is composed of four corner backing metal members. According to such a configuration, an annular welding backing metal can be easily formed by combining four corner backing metal members.

  According to a fourth aspect of the present invention, in the second aspect, the backing metal body includes four corner backing metal members and a connecting backing metal member for connecting the corner backing metal members. It is a backing metal for welding characterized by comprising. According to such a configuration, it is possible to easily cope with column pillars of various sizes only by adjusting the length and number of the connecting backing metal members.

  A fifth invention is a welding backing metal according to the second invention, wherein the backing metal body is composed of four backing metal members constituting each side. According to such a configuration, it is not necessary to perform a bending process or the like at the corners of the column pillars, so that it can be created more easily and at a lower cost.

  A sixth device is the welding device according to any one of the first to fifth devices, wherein the inclination angle of the contact surface of the backing metal body is the same as the inclination angle of the column column end. This is a backing money. According to such a configuration, a uniform route gap (route interval) can be formed between the column column end portion and the diaphragm.

  According to the present invention, when the diaphragm is obliquely abutted and welded to the column column end, the work of cutting the upper side corner and the lower side corner of the backing metal main body becomes unnecessary, so that temporary fixing installation work and the like can be performed. It becomes extremely easy.

It is a side view which shows the beam junction part of the column pillar which comprises a steel frame structure. FIG. 2 is a partially enlarged longitudinal sectional view showing a part A in FIG. 1. It is a longitudinal cross-sectional view which shows the positional relationship example of the backing metal 100 for welding which concerns on this invention, the column pillar 10, and the 1st diaphragm 20. FIG. It is a perspective view which shows one Embodiment of the backing metal 100 for welding which concerns on this invention. It is a perspective view which shows one Embodiment of the backing metal member 110 for a corner | angular part which comprises the backing metal 100 for welding which concerns on this invention. It is a perspective view which shows other embodiment of the backing metal 100 for welding which concerns on this invention. It is a perspective view which shows other embodiment of the backing metal 100 for welding which concerns on this invention.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a beam joint portion of a column pillar constituting a steel structure. In the figure, reference numeral 10 denotes a column column made of a steel pipe (rectangular steel pipe) having a rectangular cross section, and a first diaphragm 20 having a flat plate shape and a beam joint at the upper end (top) thereof. The member 30 and the second diaphragm 40 are sequentially butt welded. This beam joining member 30 is formed in a rectangular section having substantially the same size as that of the column pillar 10, and beam members 50, 50 made of H steel or the like are formed on each side of the column pillar 10 that stands vertically. In contrast, they are connected (welded) at an angle (in the example of the figure, one on the opposite surface, two in total).

  FIG. 2 is a partially enlarged cross-sectional view showing a portion A in FIG. As shown in the drawing, the upper end portion (top portion) of the column column 10 is inclined so as to cut the opening in the left-right diagonal direction in the figure with respect to the longitudinal direction. The first diaphragm 20 is butt-welded through the welding backing metal 100 according to the present invention. The first diaphragm 20 and the beam joining member 30, and the beam joining member 30 and the second diaphragm 40, which are not shown in FIG. 2, are also brought into contact with each other via the welding backing metal 100 according to the present invention. Welded.

  The welding backing metal 100 is formed in a rectangular shape as shown in FIG. 3, and, as shown in FIG. 4, the end of the column column 10 is projected so as to protrude from the end of the column column 10 that opens obliquely. It is installed (welded) along the inner peripheral surface of the part. The welding backing metal 100 is tapered so that the diaphragm 20 comes into close contact with at least the diaphragm 20 side contact surface 102 of the backing metal body 101 protruding from the end of the column column 10. The inclination angle of the abutment surface 102 of the backing metal body 101 is the same as the inclination angle of the column column 10 end, and when the diaphragm 20 is placed, the column column 10 end and the diaphragm 20 are separated from each other. Parallel to each other, that is, the route gap (route interval) between the column column 10 end and the diaphragm 20 is uniform (for example, about 6 to 7 mm) over the entire circumference.

  As shown in FIG. 4, a backing metal body 101 constituting the welding backing metal 100 is composed of four corner backing metal members 110, 110, 110, 110. The corner backing metal member 110 is composed of a plate material (steel material) 111 formed in a U shape as shown in FIG. Note that the width t1 of the left portion 111a of the plate member 111 is formed wider than the width t2 of the right portion 111b. Moreover, this board | plate material 111 can be easily produced by well-known methods, such as laser fusing and press punching, using a normal steel plate for backing metal.

  In addition, a plurality of slits 112 are formed in parallel in the bent portion of the plate material 111 so as to cross the bent portion. 5 (B), the slits 112, 112,... Are turned inward, and the bent portion is bent at an angle of 90 °. Then, as shown in FIG. The contact surface 102 is formed by cutting (cutting surface) into a tapered shape so that the upper surface 1a of the portion 111a is flush with the upper surface 1b of the narrow right portion 111b.

  The corner backing metal members 110, 110, 110, 110 formed in this way are assembled (welded) into a rectangular shape as shown in FIGS. Such a rectangular welding backing metal 100 can be easily created.

  Then, the welding backing metal 100 having such a configuration is installed at the end of the column column 10 as shown in FIG. 4, and a route gap formed between the end of the column column 10 and the diaphragm 20 is welded. The diaphragm 20 can be reliably butt-welded to the end of the column column 10. The method for installing the welding backing metal 100 on the end of the column column 10 is not particularly limited. However, welding is performed as shown in the figure, or projections are provided on the peripheral surface of the column 10 to provide an end of the column column 10. You may install so that it may be hooked in the opening part. Further, as described above, it is desirable that a predetermined groove is formed in advance at the end of the column pillar 10 in order to ensure welding with the diaphragm 20.

  According to the welding backing metal 100 of the present invention having such a configuration, when the diaphragm 20 is obliquely abutted and welded to the end of the column column 10, the upper side corners and the lower side corners of the backing metal body 101 are welded. Since the work of cutting the parts is not necessary, the temporary fixing installation work and the like become extremely easy. Further, by making the backing metal body 101 rectangular, it is possible to install the backing metal body 101 without any gap along the inner peripheral surface of the column end portion having the rectangular cross section which is most often used at present.

  In addition, by forming this backing body 101 by combining four corner backing members 110, 110, 110, 110, a rectangular welding backing 100 can be accurately and easily formed. can do.

  Here, the welding backing metal 100 according to the present invention is not limited to the configuration shown in the above embodiment, and may be configured as shown in FIGS. 6 and 7, for example. That is, first, the welding backing metal 100 shown in FIG. 6 includes the above-described four corner backing metal members 110, 110, 110, 110 and the corner backing metal members 110, 110, 110, 110 is constituted by four connecting backing metal members 120a, 120a, 120b, 120b.

  Of the four connecting backing metal members 120a, 120a, 120b, and 120b, the pair of connecting backing metal members 120a and 120a that connect the tapered surfaces of the corner backing metal member 110 are for corner portions. The shape is similar to the cross section of the left portion (tapered surface side) 111a of the backing metal member 110, and the tapered surfaces of adjacent corner backing metal members 110 are connected in a flush manner. On the other hand, the connecting backing metal members 120b and 120b are also similar in shape to the cross section of the right portion 111b of the corner backing metal member 110, and face between the upper surfaces 1b of the adjacent corner backing metal members 110. Are connected to one.

  Therefore, according to the configuration as shown in FIG. 6, it is possible to easily cope with the column pillars 10 of various sizes only by adjusting the length and number of the connecting backing metal members 120a, 120a, 120b, 120b. be able to.

  Next, a welding backing metal 100 shown in FIG. 7 is configured by forming a rectangular backing metal body 101 from four backing metal members 130, 130, 140, and 140 that constitute each side. Of these four backing metal members 130, 130, 140, 140, the backing metal members 130, 130 correspond to the upper side and the lower side of the end of the column pillar 10 that opens obliquely, and the backing metal members 140, 140. Corresponds to the inclined side between the upper side and the lower side. The upper surfaces of the backing metal members 130 and 130 corresponding to the upper and lower sides of the column pillar 10 end are tapered so as to be continuous with and flush with the upper surfaces of the backing metal members 140 and 140. is there.

  According to such a configuration, since the bending process at the corners of the column pillar 10 is not required, the welding backing metal 100 can be created more easily and at a low cost. In addition, when performing R processing to the corner | angular part of this backing metal 100 for welding, both ends of the backing metal members 130 and 130 will be cut into a curved surface shape, but this R processing is a backing metal member. Since there is a limit due to the plate thickness of 130, 130, it is suitable for the column pillar 10 having a relatively small radius of curvature inside the corner (for example, 10 mm or less). On the other hand, when using the corner backing metal member 110 formed by bending the plate material 111 as shown in the embodiment, the curvature radius can be freely adjusted, so the curvature radius inside the corner is compared. It is suitable for a large column pillar 10 (for example, 10 mm or more).

  In each of the above-described embodiments, since the column column 10 is generally of a cross-sectional shape, the welding backing metal 100 according to the present invention is also shown as a rectangular example, but this shape is limited to a rectangular shape. Of course, various changes are made in accordance with the cross-sectional shape of the column pillar 10 to be applied. That is, for example, if the column column 10 is a circular cross section (round steel pipe), the welding backing metal 100 to be applied is elliptical, and if the column pillar 10 is a polygonal cross section, the welding backing metal 100 to be applied is this. It becomes a polygon shape to match.

DESCRIPTION OF SYMBOLS 100 Backing metal for welding 101 Backing main body 102 Contact surface 110 Backing metal member for corner part 111 Plate material 120a, 120b Backing metal member for connection 130, 140 Backing metal member 10 Column pillar 20, 40 Diaphragm 30 Beam Joining member 50 Beam material

Claims (6)

When a flat diaphragm is butt-welded to the end of a column pillar that is processed obliquely with respect to the longitudinal direction, welding that is continuously installed in advance along the inner surface of the column pillar end. A stipend money,
A backing metal for welding, wherein a taper process is applied to a contact surface of a backing metal main body protruding from the column end so that the diaphragm comes into close contact. In the welding backing metal according to claim 1,
A backing metal for welding, wherein the backing metal body has a rectangular shape. In the backing metal for welding according to claim 2,
A backing metal for welding, wherein the backing metal body is composed of four corner backing metal members. In the backing metal for welding according to claim 2,
The welding backing metal, wherein the backing metal body is composed of four corner backing metal members and connecting backing metal members for connecting the corner backing metal members. . In the backing metal for welding according to claim 2,
A backing metal for welding, wherein the backing metal body is composed of four backing metal members constituting each side. In the welding backing metal according to any one of claims 1 to 5,
The welding backing metal according to claim 1, wherein an inclination angle of a contact surface of the backing metal body is the same as an inclination angle of the column end portion.

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