JP4398782B2 - Manufacturing method of building steel structure - Google Patents

Description

The present invention, in the beam-column joints of building steel structure, the pillar short member and the panel portion composed of the diaphragm member or building steel structure using a technique for joining the columns and beams to dice part of the RHS It relates to the production method.

In the conventional technique, the beam-column joint portion of the building steel structure is formed by performing welding 6 between the diaphragm member 1 made of a thin steel plate and the column 2 such as a short square steel pipe, as shown in FIG. In many cases, a dice is formed, the dice and the H-shaped steel beam flange 4 are welded and joined, and the dice and the column 5 are welded and joined. One side this prior art, as shown in FIG. 2, the weld 6 and dice the diaphragm member 1 and H-beam welding 7 of the flange 4 of the short pillar 2 and the diaphragm member 1 of dice using a backing metal 10 It is carried out by welding. In the conventional welding method between the diaphragm member 1 and the beam flange 4, after the groove processing of the end portion of the flange 4 to be joined, the production of the backing metal 10 and the temporary welding 8 for attaching the backing metal are performed. The main welding 7 is performed. In addition, the welding of the diaphragm member 1 and the short column 2 or 5 is also performed after the grooved end of the short column 2 or 5 is to be joined, and then the production of the backing plate 10 and the temporary welding 8 for mounting the backing plate 8. The main welding 6 between the diaphragm member 1 and the short column 2 or 5 is performed.

Furthermore, in Japanese Patent Laid-Open No. 2001-259830 (Patent Document 1) , as shown in the example of FIG. 3, overlay welding 14 was performed by applying a non-consumable copper metal 12 to the back surface of the end portion of the weld joint member 13. After that, groove processing is performed at a position of 13C including the built-up portion 14 to obtain a groove 15 including the member 13 and the built-up portion 14 as shown in FIG. 5, as shown in FIG. In addition, the joint welding 17 is performed by a one-side welding method in which the members 16 and 13 are welded from one side without using a consumable backing metal or backing material, and the thickness of the member at the end of the welded joint member exceeds the plate thickness 18 There are technical ways to achieve a thickness of 19.

Moreover, in Unexamined-Japanese-Patent No. 2003-260591 (patent document 2) , as shown in the example of FIG. 4, the thin steel plate 25 about 3 mm thick is applied to the back surface of the edge part of the welded joint member 13, and overlay welding 14 is carried out. After performing the groove processing, the groove processing is performed only at the end portion of the member 13 at the position of 13C to obtain the groove 15 including the member 13 and the built-up portion 14 as shown in FIG. As shown, the joint welding 17 is performed by a one-side welding method in which the members 16 and 13 are welded from one side without using a consumable backing metal or backing material, and the thickness 18 of the member at the end of the welded joint member is set. There is a technical way to achieve a throat thickness of 19 over.

Moreover, as shown in FIG. 7, the method of attaching the inner diaphragm member 1 to the position of the same height as an H-shaped steel beam flange on the inner surface side of the square steel pipe column 5 may be used. However, in this case, it is necessary to weld joining the inner diaphragm member 1 and the cutting position after dividing cut RHS 5 near the inner diaphragm member 1.

Further, as disclosed in Japanese Patent Application Laid-Open No. 6-240744 (Patent Document 3) , a rectangular steel pipe is formed by passing a H-shaped steel beam through a square steel pipe column and simultaneously welding in parallel with the H-shaped steel beam flange. The column / beam joint structure that penetrates the column is disclosed.
JP 2001-259830 A JP 2003260591 A JP-A-6-240744

In the case of using a square steel pipe, most of the conventional building steel beam-column joints are manufactured with the dice shown in FIG. 1, and as shown in FIGS. 1 and 2, the diaphragm member 1, the column short member 2, and the back There are a lot of members such as the gold 10 and the end tab, and the weld 6 makes a round around the short column member 2 and the welding amount is large. For this reason, there is a problem that the cost for manufacturing the parts is increased, and the diaphragm member is bent after the dice are manufactured, so that a so-called umbrella folding phenomenon occurs, and a difference between the diaphragm member and the beam flange is likely to occur. Thus, when the diaphragm member protrudes from the column, it is necessary to make the outer wall outside the diaphragm member , so that the construction is poor and the living space is narrowed. There is a problem that the material used for the diaphragm member increases. In addition, attaching the backing metal 10 to the inner periphery of the end of the short column 2 and performing the temporary welding 8 requires labor and cost. Further, since the welding 6 between the short column 2 and the diaphragm member 1 is performed over the entire circumference, not only the welding residual stress increases because of the large amount of welding, but also when the backing metal 10 is used, the gap between the members 4 and 5 is increased. The notch is made, stress concentration occurs, and the strength is weakened.

As shown in FIG. 2, the scallop 11 is conventionally used. However, since the diaphragm member 1 protrudes outside the column 5, the scallop processing is troublesome. Even if the scallop 11 is omitted, since the plate thickness of the diaphragm member 1 is larger than the plate thickness of the beam flange 4, there is a face that makes it difficult to groove the beam flange 4.

  Further, as shown in FIG. 2, the scallop 11 is conventionally used. However, when the scallop is present, when the beam is subjected to a bending moment, the scallop 11 is a space portion and inhibits the transmission of the bending moment. Yes. In addition, since the inside of the dice is conventionally a space surrounded by a thin square steel pipe wall, it is difficult to transmit the bending moment applied to the beam through the web to the column.

In addition, the beam usually protrudes from the column in 2 to 4 directions. However, the beam is not necessarily the same, and if there is a difference in the cause, a new diaphragm member is provided at the beam flange position. However, there is a problem that the labor of steel frame increases greatly.

Furthermore, in general, the weld heat-affected zone is likely to be brittle. Conventionally, when two welds are close to each other, the two heat-affected zones are overlapped with each other so that the heat-affected zones are overlapped and the brittleness is not further promoted. It is usual to keep the heat affected zone away from each other so as not to overlap. In particular, there is a problem if a portion where the effects of welding heat by both welds overlap is exposed on the outer surface. As shown in FIG. 2, the welded portion 6 between the column 5 and the diaphragm member 1 is close to the welded portion 7 between the beam 4 and the diaphragm member 1, and a common weld heat affected zone sandwiched between both welded portions is generated on the outer surface. There is a phenomenon that the heat-affected zone is more fragile than a single heat-affected zone. Due to such a phenomenon, there arises a problem that the brittle fracture strength / fatigue strength and plastic deformation performance of the beam-column joint are lowered.

  Conventionally, building steel frames are assembled in a factory by attaching a dice and a short beam or bracket to produce a panel zone, connecting columns to the panel zone by welding, and usually producing it for the length of the third floor of the building. After the column with panel zone is upright on site, the short beams are connected by bolting with long beams. This conventional construction method takes a laborious process of originally cutting and welding a long rectangular steel pipe or the like. Accordingly, cutting accuracy and welding distortion become problems.

On the other hand, in the inner diaphragm type column beam joint shown in FIG. 7, it is necessary to weld and join the inner diaphragm member 1 located at a position away from the end of the square steel pipe column to the inner surface of the square steel pipe in a state where the inside is not clearly visible. In this case, it is difficult to weld the inner surface, and it is difficult to align the height positions of the inner diaphragm member 1 and the H-shaped steel beam flange on the outer side of the square steel pipe column 5, and there is a problem that deviation is likely to occur. In that case, there is a problem that stress is hardly transmitted from the beam flange to the inner diaphragm member, and the strength of the column beam connection portion is likely to be lowered.

Further, as disclosed in Japanese Patent Application Laid-Open No. Hei 6-240744 , a column in which an H-shaped steel beam is passed through a rectangular steel tube column and at the same time a through plate welded in parallel with the H-shaped steel beam flange is passed through the rectangular steel tube column. -Although the beam joint structure has been disclosed, there are many through-holes and penetrating materials to the columns, and there is a problem that not only material costs but also hole processing and welding construction costs are higher than conventional methods. Furthermore, there is a stress concentration at the joining end portion of the through plate and the flange plate, and the strength tends to be weakened.

  Further, as shown in FIG. 20, there is stress concentration on the beam end side surface 21, and the fracture position of the beam is often in this portion, which lowers the beam strength.

The present invention prevents the thermal distortion and thermal strain embrittlement of the beam-to-column joint of the building steel structure, simplifies scalloping and welding groove processing, saves labor, reduces stress concentration, and An object of the present invention is to improve the strength and plastic deformation performance and reduce the manufacturing cost.

As a result of various studies to solve such various problems, the dice constituted by the members 1 and 2 shown in FIG. 1 eliminates the overhang of the diaphragm member from the pillar, and as shown in FIG. the welding portion 6 of the diaphragm member 1 has been found possible to integrate the two welds in close proximity to the weld 7 of the beam 4 and the diaphragm member 1. It was also found that the plate thickness of the diaphragm member is greatly increased, or that a stiffener is provided between the diaphragm members on the extended line of the beam web, so that the beam web bears a part of the bending moment applied to the beam flange. .

Accordingly, the manufacturing method of the building steel structure according to claim 1 includes a column member made of a square steel pipe and a panel member made of two upper and lower diaphragm members , a beam member made of H-shaped steel , and a square steel pipe. in the fabrication process of building steel structure that forms a beam-column joints by welding a Hashiracho member made, a part or entire outer peripheral edge portion of at least one of said diaphragm member of the pillar short member Near the surface and inside the inner surface, at the end of the column short member, an outer peripheral end located near the inner surface of the column short member of the diaphragm member, and an end of the column long member When welding the flange end of the beam member, the outer peripheral end of the diaphragm member to be welded, the end of the column length member, and the flange end of the beam member are grooved and welded together. The weld metal part between the end of the column short member and the end of the column long member is between the end of the column short member and the outer peripheral end of the diaphragm member to be welded to each other. By being connected to the weld metal part and being connected to the weld metal part between the end of the column short member and the flange end of the beam member to be welded to each other, it is possible to form a multilayer One weld metal part is formed.

The method for manufacturing a building steel structure according to claim 2 is a method comprising: a column member made of a square steel pipe and a panel member made of two upper and lower diaphragm members; a beam member made of H-shaped steel; and a column made of a square steel pipe. In a manufacturing method of a building steel structure in which a column beam joint is formed by welding and joining a long member, a part or the entire circumference of at least one of the outer peripheral ends of the diaphragm member is formed on the column short member and the column length. An end portion of the column short member and an end portion of the column length member are positioned near the outer surface of the member, and on the outer peripheral end portion of the diaphragm member positioned near the outer surface of the column short member. And welding the flange end of the beam member to the end of the column short member to be welded, the end of the column long member, and the flange end of the beam member, and welding them together Said da The weld metal between the outer peripheral end of the diaphragm member and the flange end of the beam member is welded between the outer peripheral end of the diaphragm member and the end of the column short member to be welded to each other. Are connected to the weld metal portion between the outer peripheral end portion of the diaphragm member and the end portion of the column length member which are welded to each other, and are connected to the weld metal portion of the multi-layer pile. One weld metal part is formed.

The manufacturing method of the building steel structure according to claim 3 includes a column member made of a square steel pipe and a panel member made of two upper and lower diaphragm members, a beam member made of H-shaped steel, and a column made of a square steel pipe. In a manufacturing method of a building steel structure in which a column beam joint is formed by welding and joining a long member, a part or the entire circumference of at least one of the outer peripheral ends of the diaphragm member is formed on the column short member and the column length. An end portion of the column short member and an end portion of the column length member are positioned near the outer surface of the member, and on the outer peripheral end portion of the diaphragm member positioned near the outer surface of the column short member. When welding the flange end of the beam member, groove processing is performed on the flange end of the beam member to be welded, and the upper and lower sides of the outer peripheral end of the diaphragm member to be welded are also processed. The outer circumferential end of the diaphragm member is welded to the welded metal portion between the outer circumferential end of the diaphragm member and the flange end of the beam member that are grooved and welded to each other. And connected to the weld metal part between the outer peripheral end part of the diaphragm member and the end part of the column long member to be welded to each other. Thus, one weld metal portion of a multilayer is formed from these weld metal portions .
In this case, the welding groove processing of the column long tube member end and the column short tube member can be omitted, and there is an effect of reducing the probability of the occurrence of the lamellar tear of the diaphragm member.

According to a fourth aspect of the present invention, there is provided a method for manufacturing an architectural steel structure according to any one of the first to third aspects, wherein the thickness of the diaphragm member is increased, and the height position and orientation are adjusted. The flanges of two or more different beam members are welded and joined within the plate thickness of the diaphragm member . The novelty of the present invention is that, in addition to the novelty of any one of claims 1 to 3, two or more flanges of beams having different ridges and orientations are welded to one diaphragm member. There is .

The manufacturing method of a building steel structure according to claim 5 is the invention according to any one of claims 1 to 3, wherein the thickness is equal to or greater than a thickness of the web of the beam member and 8 minutes of the beam length. A stiffener having a height of 1 (12.5%) or more is attached to a position of the diaphragm member on an extension of the web of the beam member, and the stiffener and the web of the beam member are welded to each other. To do.
In addition to the novelty of the invention described in any one of claims 1 to 3, the novelty of the present invention is equal to or more than the thickness of the beam web on the extension of the beam web and 8 minutes of the beam seizure. By welding and joining the stiffener having a height of 1 (12.5%) or more and the beam web, the moment applied to the beam is effectively borne not only on the beam flange but also on the beam web. The higher the stiffener height, the more effective, but a range of 15% to 30% of the beam is preferably economical and effective for reducing the beam.

According to a sixth aspect of the present invention, there is provided a method for producing an architectural steel structure according to any one of the first to fifth aspects, wherein the amount of chemical component of sulfur in the diaphragm member is 0.004% or less. It is characterized by that. The novelty of the present invention is mainly to make the amount of sulfur chemical component of the diaphragm member 0.004% or less in addition to the novelty of the invention described in any one of claims 1 to 6. .

The architectural steel structure manufacturing method according to claim 7 is the invention according to any one of claims 1 to 6, wherein the column short member, the column long member, the beam member, and the diaphragm member. After the weld overlay is applied to the back surface of the end of one member or a plurality of members, welding groove processing is performed on the front side to manufacture the column beam joint . In addition to the novelty of the invention according to any one of claims 1 to 7 , the novelty of the present invention is to perform welding groove processing after constructing a weld overlay on the back of the end of the member, The purpose is to produce a beam-column joint.

The manufacturing method of a building steel structure according to claim 8 is the invention according to any one of claims 1 to 7, wherein the end of the column short member of the flange end of the beam member or the After the joint is welded to the outer peripheral end portion of the diaphragm member, it is connected to the flange end joint weld portion of the beam member and is welded to any one of the side surface, the upper surface, and the lower surface of the flange. In addition to the novelty of the invention described in any one of claims 1 to 7 , the novelty of the present invention is overlay welding on the side surface, top surface, or back surface of the flange.

In the invention according to any one of claims 1 to 3, since the diaphragm member does not protrude beyond the outer diameter of the column, the amount of protrusion of the diaphragm member from the outer surface of the column, that is, the welding bending deformation of the "collar" There is no so-called umbrella-folding phenomenon, there is an effect that the outer wall of the building is well-balanced and the indoor space is increased by the amount of overhang of the diaphragm member .

At least the column length member welded part and the beam end welded part are welded separately, and the two parts are connected and integrated, and the diaphragm member overhanging part by welding between the two pillars / diaphragm members and the diaphragm member / beam end welds. It is possible to prevent thermal strain embrittlement. The material used for the diaphragm member is reduced as compared with the prior art, thus saving resources. Also, at least the column length member welded portion and the beam end welded portion are individually welded, and the two are connected and integrated, so that the transmission of stress between the column and the beam becomes smooth. Further, the integration reduces the welding amount and improves the welding efficiency.

Furthermore, in invention of Claim 3, the diaphragm member edge part by welding and joining a column short member and a column long member on both sides of the outer periphery edge part of a diaphragm member by sandwiching a diaphragm member It has the effect of making it difficult for lamellar tears to occur. In addition, since the diaphragm member and the beam can be welded to the column short member while visually confirming the mounting position close to each other, the diaphragm member and the beam are connected to each other than the case of the normal inner diaphragm system as shown in FIG. There is an advantage that the height deviation is less likely to occur.

In the invention according to the fourth aspect, in addition to the effect of the invention according to any one of the first to third aspects, the number of diaphragm members can be reduced, so that the diaphragm member is attached to the column by welding. The amount can be reduced, which helps to reduce the production cost and shorten the construction period.

In the invention according to claim 5, in addition to the effect of the invention according to any one of claims 1 to 3, in order to load the bending moment of the beam also on the H-shaped steel beam web, Can be reduced, reducing the material weight and cost of the beam.

In the invention according to claim 6, in addition to the effect of the invention according to any one of claims 1 to 5, there is an effect that the lamellar tear at the end of the diaphragm is less likely to occur, and the column beam is highly reliable. A joint can be provided.

In the invention according to claim 7, in addition to the effects of the invention according to claims 1 to 6, the thickness of the column member end / beam member end or diaphragm member end can be increased by overlay welding, By increasing it, it is possible to reduce the stress concentration at these ends and greatly improve the strength of the beam-column joint.

In the invention according to the eighth aspect , in addition to the effects of the inventions according to the first to seventh aspects, the stress concentration on the side surface of the beam end can be reduced. Even if the column member end / beam member end or diaphragm member end is reinforced by overlay welding, the failure occurrence portion of the column beam joint is often the beam end. In order to improve such a situation, it is necessary to reinforce the beam end portion from the side surface, the upper surface, and the back surface, and this method has an advantage that the strength of the column beam joint portion is further improved.

The embodiment about the manufacturing method of a building steel frame structure is described.

A first embodiment of the present invention will be described. FIG. 8 shows that the diaphragm member 1 does not substantially protrude from the outer surface of the column 5 because part or all of the outer peripheral end member end portion of the diaphragm member 1 is positioned in the vicinity of the outer surface of the column short member and the column long member. Thus, the column short member 2 and the diaphragm member 1 of the column beam joint portion are welded and joined 6 to produce a panel member, that is, a dice, and the dice and the beam end are joined by welding 7. The state of the method of welding and joining the column length member 2 from the state where the dice and the beam are joined is shown. In this case, the backing metal 10 is used for both the column and the beam, and the temporary welding 8 is also performed. The dimension that the diaphragm member 1 protrudes to the outer surface of the column is about 5 mm at most. In this case, the weld 17 of the beam end member 4 and the column long member end weld are connected to each other, and the number of weld layers of the welds 17 and 6 is 4 in total in order to ensure the toughness and tensile strength of the weld metal. Usually it is more than a layer. Moreover, although the backing metal is attached in this Embodiment , it is also possible to construct each member by back wave welding. Further, as shown in FIG. 10, the diaphragm member 1, the column long member 5, and the column short are arranged so that a part or the entire circumference of the outer peripheral end portion of the diaphragm member is located in the vicinity of the inner surface of the column short member and the column long member. Without groove processing one or two of the members 2, for example, as shown in FIG. 10, the groove is taken in the diaphragm member 1 and the column long member 5 without taking the groove in the column short member 2, Each member is welded and joined, and at least the column length member weld metal part and the beam end weld metal part of the column beam joint part are connected to produce a single weld metal part of a multi-layer pile to produce a steel structure. The method is shown.

A second embodiment of the present invention will be described. FIG. 13 shows the beam-column joint portion when the plate thickness of the diaphragm member 1 is increased and the outer peripheral end of the diaphragm member 1 is brought to the outer surface position of the square steel pipe 5 and the backing metal 10 is used for welding joining. FIG. 6 is a cross-sectional view showing an example in which the diaphragm member 1 is made thicker than usual and the diaphragm member 1 and the beam web 9 are directly connected by welding 9W. FIG. 14 includes the structure of claim 7, but the plate thickness of the diaphragm member 1 is increased, the outer peripheral end of the diaphragm member 1 is brought to the outer surface position of the square steel pipe 5, and overlay welding is performed on the rear surface of the member. is a cross-sectional view of the beam-column joints when carrying out the joint after the construction, also in this case, direct connection and a diaphragm member 1 and the beam web 9 by welding 9W the thickness of the diaphragm member 1 is made larger than normal An example will be shown. FIG. 13 and FIG. 14 are examples in which the upper diaphragm member is thickened, but normally the plate thickness of the upper and lower diaphragm members is increased. The greater the plate thickness increase of the diaphragm member, the more effective the portion that bears the moment from the beam web, and the more effective the moment from the beam web when the beam is 12.5% or more. It has been clarified that a range of 15% to 30% of the beam can be economically effective for reducing the beam.

A third embodiment of the present invention will be described. FIG. 15 shows that the plate thickness of the lower diaphragm member 1 is increased more than usual and the outer peripheral end of the diaphragm member 1 is installed at the outer surface position of the square steel pipe 5 so that two or more beam flanges 4 having different ridges and directions are provided. A cross-sectional view of a column beam joint when attached to the diaphragm member 1 and using a backing metal 10 for welding joining is shown, and two beam flanges 4 are attached to one lower diaphragm member. Although attached to the welding location to the pillars, in addition to the two diaphragm member is about to be required four locations, it is reduced to two locations halves in this embodiment.

A fourth embodiment of the present invention will be described. FIG. 16 shows that the plate thickness of the lower diaphragm member 1 is increased more than usual, and the outer peripheral end of the diaphragm member 1 is installed at the outer surface position of the square steel pipe 5, and beams 3 having different ridges and directions are respectively connected to the diaphragm member 1. A cross-sectional view of the column beam joint portion when the welding is applied by applying the weld overlay 14 to the back surfaces of the columns 2 and 5 and the beam flange 4 member is shown, and two beam flanges 4 are attached to one lower diaphragm member 1. Are usually attached, and normally, in addition to the two diaphragm members , four welding points are required for attachment to the pillar, but in this embodiment , the number of welding points is reduced to two half. is doing.

A fifth embodiment of the present invention will be described. FIG. 17 shows a case where a stiffener 22 having a height equal to or greater than the thickness of the beam web 9 and equal to or higher than one-eighth (12.5%) of the beam web is welded to the diaphragm member 1 on the extension of the beam web 9. Further, a sectional view in which the stiffener 22 and the beam web 9 are welded and joined 24 is shown. It has been clarified that the moment from the beam web can be effectively borne when the stiffener height is 12.5% or more of the beam, but if desired, the range of 15% to 30% of the beam is desired. It is economical and effective for reducing the beam. The weld joint 24 between the stiffener 22 and the beam web 9 is performed by joining the stiffener 22 and the column short member 2 by butt welding or groove welding, and then performing the beam web 9 and welding 9W. The present embodiment also includes the configuration of claim 7.

A sixth embodiment of the present invention will be described. FIG. 10 shows that the entire periphery of the outer peripheral end of the diaphragm member 1 is positioned in the vicinity of the inner surfaces of the column short member 2 and the column long member 5, and the outer peripheral end of the diaphragm member 1 is subjected to one-side groove processing, A panel member, that is, a die, is manufactured by welding the column short member 2 and the diaphragm member 1 of the column beam joint so that the diaphragm member 1 does not protrude from the outer surface of the column, and the die and the beam end are welded together. And a state of a method of welding and joining the column length members 5 from a state where the dice and the beam are joined. In this case, the backing metal 10 is used for both the column and the beam, and the temporary welding 8 is also performed. Similarly, FIG. 11 shows a case in which welding is performed on the rear surface of the end portion of the member and joint welding is performed, and an embodiment of the invention according to claim 7 is also shown.

A seventh embodiment of the present invention will be described. 12, substantially the entire circumference of the outer peripheral edge of the diaphragm member 1 is so positioned near the outer surface of the pillar short member 2 and the Hashiracho member 5, on both sides ie K-groove processed on the outer peripheral edge portion of the diaphragm member 1 The diaphragm member 1 is prevented from projecting to the outer surface of the column, and the column short member 2 and the diaphragm member 1 of the column beam joint are welded and joined to produce a panel member, that is, a dice. The state where the end is joined by welding 7 is shown, and further, the state of the method of welding and joining the column length member 5 from the state where the dice and the beam are joined is shown. In this case, overlay welding is carried out on the back surface of both ends of the columns and beams. Although a backing metal may be used instead of the overlay welding, the present embodiment is an example in which the overlay welding is performed, and therefore FIG. 12 shows an embodiment including the configuration of claim 7 . Show.

The eighth embodiment of the present invention will be described. In current SN400C and SN490C of JIS G3136, the sulfur content of the steel sheet is regulated to 0.008% or less in order to prevent lamellar tear. However, as a result of the investigation, it has been clarified that it is desirable to limit it to 0.004% or less in order to sufficiently prevent lamellar tears. It is an object of the present invention to provide a method for producing an architectural steel frame structure characterized in that the amount of chemical component of sulfur in a diaphragm member is 0.004% or less.

A ninth embodiment of the present invention will be described. In the invention described in claim 7, as shown in FIG. 9, the ends of the beam flanges 4, by applying a respective overlay welding to the rear surface of the end portion of the end and Hashiracho member 5 pillars short member 2 After performing the groove processing, the end portion of the diaphragm member 1 and the end portion of the column short member 5 which are not groove processed are welded, and the end surface of the diaphragm member 1 and the end portion of the beam flange 4 are welded and joined. Next, a case is shown in which the end of the diaphragm member 1 that has not been grooved and the end of the column length member 5 are welded together and integrated with the end welding of the beam 4.

A tenth embodiment of the present invention will be described. As shown in FIG. 11, the entire circumference of the outer peripheral end of the diaphragm member 1 is positioned in the vicinity of the inner surface of the column short member and the column long member, and the outer peripheral end of the diaphragm member is subjected to one-side groove processing, The diaphragm member 1 is prevented from projecting to the outer surface of the column, and overlay welding is performed on the back surfaces of the end of the beam flange 4, the end of the column short member 5, and the end of the column long member 5, respectively. After carrying out the pre-processing, the column short member 2 and the diaphragm member 1 of the beam-column joint are welded and joined to produce a panel member, that is, a die, and the die and the beam end are joined by welding 7, Furthermore, the state of the method of welding and joining the column length member 2 from the state in which the dice and the beam are joined is shown.

An eleventh embodiment of the present invention will be described. In FIG. 18, after the beam flange end joint welding 7 or 17 according to the first to seventh aspects of the invention, it is connected to the welded portion of the beam flange end joint and subjected to overlay welding 20 on the side surface of the flange. The method of manufacturing is shown. Appropriate dimensions for the build-up are a width flange thickness, a length of 20 to 200 mm, and a height of 3 to 10 mm. In order to alleviate stress concentration, it is desirable to gradually increase the build-up height toward the beam end.

A twelfth embodiment of the present invention will be described. In FIG. 19, after the beam flange end joint welding 7 or 17 according to the invention of claims 1 to 7, it is connected to the beam flange end joint weld and is welded to the upper surface of the flange in the axial direction of the beam. The method of manufacturing a steel structure by doing is shown. The overlay dimensions are suitably 10-30 mm in width, 20-200 mm in length, and 3-10 mm in height. In order to alleviate stress concentration, it is desirable to gently finish the build-up weld end on the center side of the beam to be tapered.

A thirteenth embodiment of the present invention will be described. In FIG. 20, after the beam flange end joint welding 7 or 17 according to the invention of claims 1 to 7, it is connected to the beam flange end joint weld and is welded to the upper surface of the flange in the axial direction of the beam. 20 shows a method for manufacturing a steel structure. As for the build-up dimensions, the width is suitably about the width of the beam flange, the length of 20 to 200 mm, and the height of 3 to 10 mm. In order to alleviate stress concentration, it is desirable to gently finish the build-up weld end on the center side of the beam to be tapered.

A fourteenth embodiment of the present invention will be described. 21, after the beam flange end joint weld 7 or 17 according to the invention of claims 1 to 7, the beam flange end joint weld is connected to the beam flange end joint weld and widened in the axial direction of the beam and on the side surface of the beam. A method of manufacturing a steel structure by overlay welding 20 on the side will be described. As for the build-up dimensions, the width is suitably about the width of the beam flange, the length of 20 to 200 mm, and the height of 3 to 10 mm. In order to alleviate stress concentration, it is desirable to gently finish the build-up weld end on the center side of the beam to be tapered.

It is an example of the three-dimensional figure of the conventional architectural steel-column-beam joint part . It is sectional drawing of the square steel pipe, diaphragm member, and beam flange junction part of the conventional building steel column-beam junction part . 1 is an example of a cross-sectional view in which build-up welding is performed by applying a water-cooled or non-water-cooled copper metal plate to an end of a member . 1 is an example of a cross-sectional view in which build-up welding is performed by applying a thin steel plate to a member end . FIG . 6 is a cross-sectional view of a state in which build-up welding is performed on the end portion of the member 13 and the member end portion and the build-up weld portion 14 are both grooved . It is sectional drawing of the state which carried out the overlay welding 14 and the groove processing to the edge part of the member 13, and applied to the other party member 16 of a joint, and implemented joint welding . It is sectional drawing which shows the construction condition of the inner diaphragm member with which the square steel pipe column was loaded . It is sectional drawing of the column beam junction part using backing metal when the outer peripheral end of a diaphragm member has come to the square steel pipe outer surface position . It is sectional drawing of the column beam junction part of the build-up welding construction in the case where the outer peripheral end of the diaphragm member has come to the square steel pipe outer surface position . It is sectional drawing of the column beam joint part using backing metal when the outer peripheral end of a diaphragm member has come to the square steel pipe inner surface position . It is sectional drawing of the column beam joining of the build-up welding construction when the outer peripheral end of the diaphragm member is brought to the square steel pipe inner surface position . The diaphragm member outer peripheral edge to fit the pillar outer surface, the cross section of the beam-column joints of the back surface was overlay welded construction without oblique grooving pillars and beams end the diaphragm member outer peripheral end with K beveling FIG . It is sectional drawing of the column beam joint part using a backing metal when the plate | board thickness of a diaphragm member is increased and the outer peripheral end of this diaphragm member has come to the square steel pipe outer surface position . It is sectional drawing of the column beam junction part of the build-up welding construction when the plate | board thickness of a diaphragm member is increased and the outer peripheral end of the diaphragm member is brought to the square steel pipe outer surface position . When the plate thickness of the diaphragm member is increased, the outer peripheral end of the diaphragm member is installed at the outer surface position of the square steel pipe, and a beam of a backing metal using a backing metal when a beam having a different direction and direction is attached to the diaphragm member . It is sectional drawing. The beam 3 indicated by a broken line is in a direction perpendicular to the solid beam. The thickness of the diaphragm member is increased, and the outer peripheral end of the diaphragm member installed in RHS outer surface position, sex and directions different beams and pillars Joints of the deposition welding of the case attached to the diaphragm member It is sectional drawing. The beam 3 indicated by a broken line is in a direction perpendicular to the solid beam. A stiffener with a height equal to or greater than the thickness of the beam web and one-eighth (12.5%) of the beam height is attached to the diaphragm member on the extension of the beam web, and the stiffener and the beam web are welded to each other. FIG . It is a top view of a column beam junction part at the time of carrying out overlay welding to a beam end side . It is a top view of a column beam junction part at the time of implementing overlay welding thinly to the axial direction of a beam on the beam end part upper surface . It is a top view of a column beam junction part at the time of performing overlay welding widely on the beam end part upper surface in the axial direction of a beam . It is a top view of a column beam joint part when overlay welding is carried out long in the axial direction of the beam and long near the side surface of the beam on the upper surface of the beam end .

1 Diaphragm member of the steel beam-column joint. In the present invention, a through plate that crosses not only a square steel pipe but also an H-shaped steel at a right angle is referred to as a diaphragm member .
A short column between two diaphragm members is called a column short member, and is usually a square steel pipe or an H-shaped steel. A member composed of 1 and 2 is called a dice.
3 H-shaped steel beam 3A Low-profile H-shaped steel beam 4 H-shaped steel beam flange 4A H-shaped steel beam flange, that is, a height of 5 Square steel pipes or those used for panel members of H-shaped steel columns are called column short members What is used for the column shaft member is called a column length member.
6 Welding of column and diaphragm member 7 Welding of beam flange and diaphragm member 8 Temporary or assembly welding 9 H-shaped steel beam web 9w H-shaped steel beam web mounting welding 10 Back metal 11 Scallop 12 Non-consumable type Copper etc.)
12P Protrusion of non-consumable metallurgy (copper etc.) 13 Flange or pillar member 13C Groove cutting position 14 of member 13 Overlay welding 15 constructed on the back of member Opening including overlay weld 14 and base metal Front surface 16 Mating member 17 Joint weld 18 Plate thickness or thickness 19 of member 13 Effective throat thickness of welded portion of members 16 and 13 Overlay welding of flange side surface, top surface or back surface 21 Beam stress concentration portion 22 Stiffener 23 Stiffener Mounting welding to diaphragm member 24 Weld joint 25 between stiffener and column short member

Claims (8)

A column beam joint is formed by welding a beam member made of H-shaped steel and a column long member made of a square steel pipe to a panel member made up of a short column member made of a square steel pipe and two upper and lower diaphragm members. In the manufacturing method of building steel structure
And a part or entire outer peripheral edge portion of at least one of the diaphragm member at the inner vicinity of the surface of the pillar short member is positioned from the inner surface on the inside,
When welding the outer peripheral end of the diaphragm member near the inner surface of the column short member, the end of the column long member, and the flange end of the beam member to the end of the column short member. , Groove processing is performed on the outer peripheral end of the diaphragm member to be welded, the end of the column length member, and the flange end of the beam member;
The weld metal part between the end of the column short member and the end of the column long member welded to each other includes the end of the column short member to be welded to each other and the outer peripheral end of the diaphragm member. And connected to the weld metal part between the end of the column short member and the flange end of the beam member to be welded to each other. A method for producing an architectural steel structure, wherein one weld metal part of a multi-layer is formed. A column beam joint is formed by welding a beam member made of H-shaped steel and a column long member made of a square steel pipe to a panel member made up of a short column member made of a square steel pipe and two upper and lower diaphragm members. In the manufacturing method of building steel structure
Even without least not a part or entire outer peripheral edge portion of one of said diaphragm member is positioned near the outer surface of said post short member and the pillar length member,
The end of the column short member, the end of the column long member, and the flange end of the beam member at the outer peripheral end located near the outer surface of the column short member and the column long member of the diaphragm member And welding the end of the column short member to be welded, the end of the column long member, and the flange end of the beam member,
The weld metal part between the outer peripheral end part of the diaphragm member and the flange end part of the beam member welded to each other, the outer peripheral end part of the diaphragm member and the end part of the column short member to be welded to each other The weld metal parts are connected to the weld metal parts between the outer peripheral end parts of the diaphragm members and the end parts of the column length members that are welded to each other. A method for producing an architectural steel structure characterized in that one weld metal part of a multilayer is formed . A column beam joint is formed by welding a beam member made of H-shaped steel and a column long member made of a square steel pipe to a panel member made up of a short column member made of a square steel pipe and two upper and lower diaphragm members. In the manufacturing method of building steel structure
A part or the entire circumference of the outer peripheral end of at least one of the diaphragm members is positioned near the outer surface of the column short member and the column long member ;
The end of the column short member, the end of the column long member, and the flange end of the beam member at the outer peripheral end located near the outer surface of the column short member and the column long member of the diaphragm member When performing welding on the flange end of the beam member to be welded, and performing groove processing on each of the upper and lower sides of the outer peripheral end of the diaphragm member to be welded,
The weld metal part between the outer peripheral end part of the diaphragm member and the flange end part of the beam member welded to each other, the outer peripheral end part of the diaphragm member and the end part of the column short member to be welded to each other The weld metal parts are connected to the weld metal parts between the outer peripheral end parts of the diaphragm members and the end parts of the column length members that are welded to each other. A method for producing an architectural steel structure characterized in that one weld metal part of a multilayer is formed . The plate thickness of the diaphragm member is increased, and the flanges of two or more beam members having different height positions and orientations are welded to each other within the plate thickness of the diaphragm member. 4. A method for producing an architectural steel structure according to any one of 3 above . A stiffener having a height equal to or greater than the thickness of the beam of the beam member and a height of 1/8 (12.5%) or more of the beam is attached to a position on the extension of the web of the beam member of the diaphragm member, The method for producing a building steel structure according to any one of claims 1 to 3, wherein the stiffener and the web of the beam member are welded together. The method for producing a building steel structure according to any one of claims 1 to 5, wherein the amount of chemical component of sulfur in the diaphragm member is 0.004% or less. The welded groove processing is performed on the front side after constructing a weld overlay on the back of the end of one member or a plurality of members of the column short member, the column long member, the beam member, or the diaphragm member , and the column beam The method of manufacturing a building steel structure according to any one of claims 1 to 6, wherein a joint portion is manufactured. After joint welding to the outer peripheral edge of the end portion or said diaphragm member of the pillar short member of the flange end of the beam member, the side surface of the flange and connecting the flange end joint weld part of the beams members, top, bottom surface The build-up steel structure manufacturing method according to any one of claims 1 to 7 , wherein overlay welding is performed on any of the above .

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