TWI516662B - Methods of making steel bones - Google Patents

Description

Steel bone structure manufacturing method

According to the present invention, in a large-thickness and large-diameter beam-column joint portion of a steel skeleton structure, a projection is provided at a portion of a peripheral end portion of the inner partition, and a tapered surface is provided on the entire outer circumference of the projection. The inner partition plate and the steel beam having the inclined tapered surface are provided, and the steel pipe column through hole is directly joined by welding.

In the conventional technique, the joint of the beam-column joint of the steel-frame structure of the building, as shown in Fig. 1, is often melted between the partition plate 1 made of a steel sheet and the short-angled steel pipe 2. The braid 6 is formed by welding 6, and the braid-shaped cube is welded and welded to the H-shaped steel beam flange 4, and then the braid-shaped cube is welded and welded to the angled steel pipe column 5. This prior art is shown in Fig. 2, the weld 6 between the angled steel pipe 2 of the braided cube and the partition 1, and the partition 1 between the braided cube and the H-shaped steel flange 4. The fusion welding 7 uses a back abutting plate 10 to perform one-side welding. In the conventional welding method in which the partition plate 1 and the steel beam flange 4 are joined together, the tapered end surface is processed by the predetermined end portion of the flange 4, and then the back surface abutment plate 10 is produced and The pre-weld welding 8 for mounting the back abutment plate 10 is performed before the actual welding 7 is performed. Further, the welding of the separator 1 and the angled steel pipe column 2 or 5 is also performed after the tapered tapered surface processing is performed on the predetermined end portion of the angular steel pipe column 2 or 5, and the back abutment plate 10 is fabricated and used to mount the back surface. The pre-weld welding 8 required for the panel 10 is then applied, and then the formal welding 6 of the separator 1 and the angled steel tubular column 2 or 5 is carried out.

In the beam-column joint where the column surface plate is a thick plate of more than 25 mm, as shown in the cross-sectional view of the column of Fig. 4, the steel pipe column 5A and the separator 1A are often used by electrothermal slag welding. Fusion welding method. In terms of the status quo, this method is the most efficient. If the thickness of the steel pipe column is 25 mm or less, an angular steel pipe which is formed by rolling or punching is often used, and usually, instead of using the electric hot-melt welding method, a carbon dioxide arc welding method is used.

The method of joining the inner partition plate and the steel beam disclosed in Japanese Laid-Open Patent Publication No. 08-158476 is characterized in that a bolt through hole is formed in the angled steel pipe column, and the inner partition plate is installed inside the joint portion of the H steel structure. The inner baffle is machined by the female thread, and the high tension bolt is first threaded through the bolt hole installed on the end plate of the end of the steel beam, screwed into the female thread, and the nut is used from the end plate side. The high tension bolts are locked and the steel beams are fixedly joined. In addition, a method of inserting a partition or a metal fitting into a steel pipe column by providing a slit in a steel pipe cylinder or a steel pipe corner portion is also disclosed.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 08-158476

[Patent Document 2] Japanese Laid-Open Patent Publication No. 07-229243

[Patent Document 3] Japanese Laid-Open Patent Publication No. 2002-146921

[Patent Document 4] Japanese Laid-Open Patent Publication No. 3-228938

[Patent Document 5] Japanese Laid-Open Patent Publication No. 2007-002658

[Patent Document 6] Japanese Laid-Open Patent Publication No. 4-289348

[Patent Document 7] Japanese Laid-Open Patent Publication No. 2005-264710

In the conventional building steel beam-column joints, almost all of the braid-shaped cubes shown in Fig. 1 are produced, and the partition plate 1, the angled steel pipe 2, and the back surface are similarly formed as shown in Fig. 1 and Fig. 2 A large number of members, such as the plate 10 and the arc runner, are welded around the angled steel pipe 2 by the fusion welding 6, so that the amount of welding is large. Therefore, not only is the production cost of the parts high, but after the braided cubes are produced, the partition protruding from the angled steel pipe column is easily bent to cause a so-called "folding phenomenon", which may easily cause the partition 1 to be generated. The problem of misalignment with the joint between the steel beam flanges 4. Therefore, if the partition protrudes from the steel pipe column, the outer wall must be made outside the partition, not only the construction cooperation will be deteriorated, but also the living space will be small. In addition, problems such as an increase in the use material of the separator may also occur. Further, in order to attach the back abutment plate 10 to the inner periphery of the end portion of the angled steel pipe 2, the work of the pre-weld welding 8 is also labor-intensive and costly. Further, the welding 6 of the angled steel pipe 2 and the separator 1 is carried out throughout the entire circumference, and since the amount of welding is large, the residual stress of the welding becomes large, and not only the case, but once the back abutment plate 10 is used, the member 4 is used. There is a gap between 5 and 5, and stress concentration occurs, and as a result, the strength is weakened.

Moreover, as shown in FIG. 2, in the past, a fan-shaped notch 11 is used. However, since the existence of the partition 1 is present, the processing of the sector-shaped notch 11 becomes laborious and time consuming. Even if the scalloped notch 11 is omitted, since the thickness of the partition 1 is larger than the thickness of the steel beam flange 4, there is a problem that it is difficult to apply the tapered surface of the steel beam flange 4.

In addition, in general, the heat-affected portion of the fusion welding has a property of being easily embrittled. In the past, when the two welded portions are in close proximity, the heat-affected portions generated by the two welded portions overlap each other and more To promote embrittlement, in order to avoid this problem, it is common practice to keep the two welded parts as far as possible so that the heat-affected parts do not overlap each other. In particular, it is a problem that the portion where the heat welding effects of the two welded portions are overlapped with each other is exposed on the outer surface. As shown in Fig. 2, the welded portion 6 of the steel pipe column 5 and the separator 1 is close to the welded portion 7 of the steel beam flange 4 and the partition 1, if it is common to the two welded portions. When the heat-affected portion of the fusion welding is located on the outer surface, the heat-affected portion may be more susceptible to embrittlement than when it is only affected by a single heat-affected portion. Because of this phenomenon, the brittle fracture strength, fatigue strength, and plastic deformation property of the beam-column joint portion are lowered.

In the past, the assembly of steel slabs was carried out by installing short beams in a scorpion cube to produce a panel area (ie, a beam-column joint area). The panel area was joined to the steel tube column by fusion welding, usually In the length of the three floors of the building, the steel pipe columns with the panel area are erected at the construction site, and the short beams are joined by bolts. This kind of conventional method is equipped with a short-beam steel pipe column. Although the short beam is only a short beam of one meter, it is protruded from the factory because it protrudes from the 2 to 4 directions orthogonal to the steel pipe column. The transportation efficiency to the site is very poor, and the manpower and time and cost of using steel bolts to join each other at the construction site are much greater than the use of fusion welding, which is one of the problems.

On the other hand, in the beam-column joint portion of the inner partition type shown in Fig. 3, the inner partition plate 1A located at a position away from the end portion of the angular steel pipe column must be in a state where the inside cannot be clearly seen. The weld is welded to the inner side of the angled steel pipe. In this case, it is difficult to carry out the welding of the inner side, and it is difficult to set the height to the height of the H-shaped steel beam flange on the outer side of the angled steel pipe column 5. They are aligned with each other, so there is a problem that stress is not easily transmitted from the flange of the steel beam to the inner partition, and thus the strength of the joint of the beam and column is easily lowered. Of course, in the inner partition type, since the inner partition is welded to the inner side surface of the angled steel pipe, the angular steel pipe must be cut alongside the inner partition. In addition, after the cutting operation, it is necessary to re-align the welding by the welding, which is very time consuming and labor intensive.

Moreover, the conventional practice is to first make a small assembly project of a braid-shaped cube from a short pipe of a partition plate and an angular steel pipe; then, install the H-shaped steel beam into the assembly process of the braid-shaped cube; This scorpion cube has been mounted on the structure behind the H-shaped steel beam, and a large assembly project of the angled steel pipe column is installed. In this conventional method, the angled steel pipe column must be cut off after each floor, and then welded and welded together. Therefore, there is a problem that it is complicated and time-consuming and complicated to manufacture.

Further, in the technique disclosed in Japanese Laid-Open Patent Publication No. 08-158476, since the bolt holes are passed through the angled steel pipe column, the strength of the angled steel pipe is lowered, and in order to compensate for such a decrease in strength, it is necessary to use an angular shape having a considerable thickness. Steel pipe column. The angled steel pipe column must be cut off after each floor and then re-melted and welded together. Furthermore, according to this method, very large end plates must be used.

The technique disclosed in Japanese Laid-Open Patent Publication No. 07-229243 is a method in which an inner separator is joined to a four-sided box-shaped steel pipe column by electrothermal slag welding, and after a steel pipe column axial groove is provided on a steel pipe column, The slit is welded to the inner partition in the longitudinal direction. These construction methods use the inner partition plate disposed inside the steel pipe column. In the electric heat slag welding method, even if the back abutment plate is used, the inner partition plate greatly abuts from the inner side surface of the steel pipe column and the back side abutment plate. Back. This inner partition does not have protrusions at its ends. This electrothermal slag welding method is carried out using a large input heat energy of 500 to 1000 KJ/cm. Not only the toughness and ductility of the steel pipe column and the separator are greatly reduced, but also sandwiched between the steel beam flange and the partition. The column steel pipe between the plates also receives the residual stress of the welding from the thickness direction and the stress from the structure, and there is a problem that cracks are easily caused.

The technique disclosed in Japanese Laid-Open Patent Publication No. 2002-146921 is to provide an elongated quadrangular slit on four faces of a steel pipe column, and fuse the end portion of the inner baffle to the slit to form a welded portion having a T-shaped cross section. Department method. In this case, no protrusion is formed on the outer peripheral portion of the inner partition. This is because the inner partition having the projections cannot be inserted into the steel pipe column in the closed steel pipe column. In this case, the welding is performed in the entire slit, so if the thickness of the steel pipe column or the thickness of the inner separator is large, there is a problem that the amount of welding is increased.

The technique disclosed in Japanese Laid-Open Patent Publication No. Hei No. 3-228938 is a method of providing a transverse slit at a corner portion of an angled steel pipe column, and a method of welding the edge end portion of the horizontal reinforcing plate to the transverse slit by using a back abutting plate. . With this configuration, as shown in Fig. 2 of the patent specification, the horizontal reinforcing plate must be divided, and the inside of the steel pipe column is hollow, so that there is a disadvantage in that it cannot be obtained from the steel beam shaft. The shear force in the direction is fully withstood by the horizontal reinforcing plate. In addition, another problem is that it is difficult to mount the back abutment plate into a closed long steel tubular column.

The technique disclosed in Japanese Laid-Open Patent Publication No. 2007-002658 is to provide a transverse slit around the entire circumference, that is, a fine groove on the inner side of the angular steel pipe, and the inside of the narrow groove is also the inside of the angular steel pipe column. The method of the inner partition. In this method, the welding system between the angled steel pipe column and the inner partition surrounds the periphery, and therefore, the thicker the thickness (thickness) of the steel pipe column and the thickness (thickness) of the steel beam flange, the section of the fine groove As the area becomes larger, there is a problem that the amount of fusion welding becomes too large, and there is a problem that the welding efficiency is lowered. Since the welding is performed on the entire inner circumference of the steel pipe column, fusion welding shrinkage occurs in the column axis direction, and the deflection and direction between the steel pipe column shafts after cutting must be correctly corrected.

In the technique disclosed in Japanese Laid-Open Patent Publication No. Hei-4-289348, the steel pipe column to which it is applied is an angled steel pipe, and a four-sided box-shaped steel pipe is not conceivable. This method is to open four through-holes in the longitudinal direction of each cylinder surface of the angled steel pipe cylinder, that is, the longitudinal slit in the direction of the column axis, and divide the metal fitting into 4 without using the partition plate. A rib portion is attached to the end surface of the metal fitting, and the rib portion is inserted into the longitudinal slit, and a method of welding and welding the steel tube column together is performed. This method has the following problems. that is,

(1) If the longitudinal slit is only a single slit, the welded portion at the end of the slit will become sharp, and it is easy to form a defect during welding.

(2) Not only the number of longitudinal slits is large, but also the number of screw fixing holes is required, so the cost of the opening is high.

(3) Metal parts with complicated shapes are divided metal parts, and eight metal fittings are required for one beam-column joint. Therefore, the cost is higher than that of the monolithic separator of the separator.

(4) It is necessary to use a fixing screw for a metal fitting. The through hole for mounting the screw is a cross-sectional defect for the steel pipe column. When fixing the lock screw, it is necessary to prevent rainwater from entering the rainwater.

(5) The metal fitting body is a bevel material having a 45° direction with respect to the beam axis direction, and it is difficult to obtain sufficient endurance against the load in the beam axis direction.

(6) Because there are many metal fittings, screws, many openings, etc., the number of parts is large, the shape is complicated, the assembly is difficult, and the cost is higher than that of the partition. It is difficult to apply to thick steel pipe columns with a thickness of more than 25mm.

In the technique disclosed in Japanese Laid-Open Patent Publication No. 2005-264710, the steel pipe column to which it is applied is an angular steel pipe, and is not intended to be a four-sided box shape. It is a method of locally providing a transverse slit, that is, a groove, through the cylindrical column of the steel pipe, and providing the inner partition on the inner side of the groove, that is, inside the angular steel pipe column. In this method, the fusion welding between the angled steel pipe column and the inner partition plate is only partial fusion welding, but the object to be welded is the thickness of the steel pipe column (thickness) and the thickness of the steel beam flange (plate thickness). As the size increases, the cross-sectional area of the groove becomes larger, and there is a problem that the amount of fusion welding becomes drastically large, and there is a problem that the welding efficiency is lowered.

〔purpose〕

The object of the present invention is to provide a method for manufacturing a steel bone structure, which can prevent the cross-section of the beam-column joint of the large-diameter and large-thickness steel skeleton structure from being cut off for each floor. The thermal deformation and thermal deformation embrittlement of the plate can prevent the welding crack caused by the welding between the inner baffle and the flange of the beam, and the welding taper surface of the steel pipe column and the baffle can be simplified. Reduce the amount of welding to improve the welding efficiency, install a baffle with a protruding cone around the entire circumference to reduce the cost of manufacturing the steel pipe column, you can omit the scalloping process and the back abutment plate, so that the beam end welding It is labor-saving and can alleviate the stress concentration, thereby further improving the strength and plastic deformation performance of the joint.

Various studies have been conducted on these topics. As a result, the hazelnut-shaped cube 2 composed of the members 1 and 2 shown in Figs. 1 and 2 is partially removed from the portion of the steel pipe column, and is changed to, for example, this The method of providing a groove 27 penetrating through the steel pipe column surface plate 5F as shown in Fig. 4 of the specification, and then welding the inner partition plate 1A and the groove 27 is disclosed in Japanese Laid-Open Patent Publication No. 2007-002658 It has also been prompted. However, according to this method, a large welded portion must be utilized for the steel pipe column and the inner partition plate of the thick plate. Therefore, the inventors have found a Transcend is: the four-sided box-shaped steel pipe column does not have to be cut for each floor, but the length on the cylinder surface corresponding to the position of the steel beam is slightly larger than the cross-sectional shape of the steel beam flange (steel pipe) a through hole having a diameter of 4/5 or more of the column diameter, and a partition plate 1 having a projection having a tapered surface at the outer peripheral portion is welded through the hole in the welded portion 6 between the steel pipe column 5 and the inner partition plate 1 However, if the steel beam flange 4 is welded and welded at the through-hole welding portion, it can be solved.

However, the inner partition plate having the protrusion cannot be inserted in the closed angled steel pipe column, so if it is a four-sided box-shaped steel pipe column (four-sided box-shaped column) which is assembled by welding four steel plates by welding. In this case, the inner partition having the projections can be inserted into the transverse through-holes of the local length before the welding assembly, and the four-sided steel sheets can be assembled, and then the steel pipe columns can be longitudinally oriented in the column axis direction. After the seam welding, the inner partition plate and the steel pipe column through hole are welded.

The "inner partition" in the present invention is defined as a partition in which the four corners of the outer shape of the partition are smaller than the inner diameter of the steel pipe column in a place other than the through hole. Therefore, in the present invention, the straight portion (side) of the end portion of the inner partition plate has a protrusion, but the inner portion of the steel pipe column through hole is also referred to as an inner partition.

Therefore, the construction steel skeleton structure of the invention of claim 1 is composed of the following constituent elements in the case of welding a four-sided box-shaped (four-sided box-shaped) steel pipe column having a rectangular cross section.

According to a first aspect of the present invention, at least a steel plate having a steel plate flange to which a steel beam flange is attached is a steel plate having a thickness of 25 mm or more, that is, a surface plate and a fusion welding. Before assembling a 4-sided box-shaped (4-sided box-shaped) steel pipe column having a quadrangular cross section, a through hole is formed in the horizontal direction, and the length of the through hole is a length of 4/5 or less of the steel pipe diameter and is a steel beam flange The length above the width, the shape is a circular, elliptical or dumbbell shape.

The reason why the thickness of the cylindrical surface of the steel pipe is selected to be 25 mm or more is because if the thickness is 25 mm or less, it is difficult to perform welding by a general carbon dioxide arc welding method. The reason why the shape of the outer side surface of the end portion of the through hole is a long hole having an arc portion at the end shown in FIG. 6 or a dumbbell shape as shown in FIG. 7 is because the penetration welding of the end portion can be made more. It is easy, and when the through hole is opened, the joint between the two end portions can be easily cut off by using a drilling machine to open the holes at both ends and then using a torch cutting method or the like. .

In particular, when the end portion of the through hole is opened in a circular arc shape, the joint portion between the two drill holes can be easily cut.

The reason why the through hole is formed is to weld the separator and the steel pipe column from the outer surface of the steel pipe column to the entire thickness of the steel pipe column surface plate, and it is not easy to withstand the thickness direction of the surface plate. The strength can prevent the welding crack of the surface plate of the steel pipe column.

The reason why the length of the through hole is selected to be 4/5 or less of the column diameter of the steel pipe is because if it is longer than this length, the end portion of the steel pipe column of the through hole in the radial direction may have a back surface abutting. The plate abuts against the column longitudinal joint and collides with the through hole, and the amount of fusion welding also increases to reduce the effect. Further, the reason why the length of the through hole is selected to be longer than the flange width of the steel beam is to securely transfer the stress of the steel beam to the inner partition in order to secure the cross-sectional area of the steel beam flange.

According to a second aspect of the present invention, a projection is provided on an outer peripheral end surface of a single-plate inner partition adjacent to an inner wall of a steel pipe column, and an outward tapered surface is provided around the projection, and four sides are assembled. Before or after the box-shaped steel pipe column, part or all of the protrusion having the tapered surface is inserted into the through hole.

The reason why such a projection having a tapered surface is provided is that the space in the through hole can be reduced as compared with the case where the projection is not provided, so that the amount of fusion between the column steel pipe and the separator can be reduced. The tapered tapered surface having the inclined tapered surface can be easily combined by the penetration welding between the projection of the partition and the through hole as compared with the case without the inclined tapered surface. In addition, the tapered tapered surface of the protrusion allows the protrusion to be easily inserted into the through hole when assembling the steel pipe column. The cross-sectional area of the portion of the projection that is inserted into the through hole is generally set to be smaller than the cross section of the through hole in order to be inserted into the through hole. Further, the length of the through hole is usually selected to be larger than the length of the bottom of the protrusion by 0 to 10 mm in order to minimize the amount of fusion welding.

According to a third aspect of the present invention, the four-sided box-shaped steel pipe column is produced by welding four steel plates, and the steel pipe column is welded and assembled by attaching the back abutment plate to the steel pipe column. The longitudinal direction of the side is then welded and welded from the outer side of the steel pipe column.

According to a fourth aspect of the present invention, the through hole and the separator are welded at least from the outer side surface of the four-sided box-shaped steel pipe column, whereby the thickness of the H-shaped steel beam flange is made larger. The longitudinal cross-sectional shape and the cross-sectional shape of the penetration welded portion between the large-thickness inner partition and the four-sided box-shaped through-hole are W-shaped. The shape of the penetration welded portion of the cross section in the through hole is a W-shaped shape in which the central portion is raised upward because it is a baffle protrusion having an outward tapered surface.

According to a fifth aspect of the present invention, the angled steel pipe column including the through hole and the welded portion of the partition having the protrusion and the H-shaped steel beam flange are welded and welded. An H-shaped steel beam flange is attached to the welded portion of the through hole and the partition having the projection, and the excess deposition amount of the fusion welding is applied to the base material of the steel pipe column.

According to a sixth aspect of the present invention, the four-sided box-shaped steel pipe column is composed of four steel plates, and the four-sided box-shaped steel pipe column is assembled. Therefore, at least the welding must be performed from the outside. Before the assembly of the steel pipe column is completed, the inside is not sealed, and at least a part of the inside of the steel pipe can be welded inside. When the inner partition plate is inserted into the column, the joint between the steel pipe column and the partition plate can be from the inner side. Welding is performed.

If the tapered surface of the outer peripheral end of the inner partition is formed to be large, the tapered surface extends to the inside of the steel pipe column, and the inner side of the steel pipe column is compared with the case where the inclined tapered surface is not provided. The fusion welding performed can be achieved with a small amount of fusion welding.

Regardless of the size of the tapered surface of the outer peripheral end of the partition, as long as the inner partition and the inner side of the steel pipe column are welded, the welded cross-sectional area between the inner partition and the inner side of the steel pipe column increases, and the inner partition The stress concentration between the plate and the inner side of the steel pipe column can be reduced, so that the strength of the joint between the inner baffle and the steel pipe column can be improved.

If the components of the invention of claim 1 of the present invention are compared with the results of the prior art documents (1 to 7), they are as shown in the following table. The symbol in the table, x indicates a case where the constituent elements of the present invention do not match; Δ indicates a case where the constituent elements of the present invention are not described in the prior art document; and ○ indicates a case where the constituent elements of the present invention are identical.

The present invention has been developed in accordance with the prior art document 2, and has been developed in order to solve the problem. Prior to comparing the constituent elements of the invention of the present invention, the prior art document 2 does not include or describe c, d, e, g, h, i, j, k, l, m, n in the constituent elements of the present case. p. In addition, if any of the other prior art documents are compared with the constituent elements of the invention of the present invention, the same constituent elements are also less than half. In particular, the "construction of the entire outer peripheral tapered surface of the projections at the end of the inner partition" and the "the joint of the steel pipe column and the separator can be welded from the inner side" are the inventions of the present invention. The unique constituent elements.

Further, even if the respective constituent elements are known constituent elements, the composite configuration in the case where such a large number of constituent elements are combined can exhibit novelty that is difficult for the practitioner to think. In particular, the four-sided box-shaped steel pipe column having a thickness of 25 mm or more for the object of the present invention exhibits many novelties as shown in the above table.

The invention of claim 1 of the present invention is directed to a four-sided box-shaped (box-shaped) steel pipe column having a steel plate thickness of 25 mm or more, and its novelty lies mainly in the following points.

(1) When assembling a 4-sided box-shaped steel pipe column, an inner partition having a tapered tapered surface on the outer circumference of the outer side of the steel pipe column is provided, and the steel pipe column is pre-assembled to the steel pipe column before assembly of the steel pipe column. Inside.

(2) welding the through hole on the cylindrical surface of the box-shaped steel pipe to the protrusion of the inner partition, which is not the entire outer circumference of the cylindrical surface of the box-shaped steel pipe, but is localized in the lateral direction and the horizontal direction. A through hole is formed in the ground; the protrusion is disposed on the inner partition and has an outward tapered surface on the entire outer circumference. Therefore, in this case, it is not necessary to perform a welding operation for the through hole of the outer circumference of the entire cylindrical surface including the corner portion of the steel pipe column.

(3) The end portion of the through hole formed in the box-shaped steel pipe column is a circular arc shape or an elliptical arc shape. Therefore, the planar shape of the through hole is a long hole or a dumbbell shape.

(4) The length of the through hole of the box-shaped steel pipe column is greater than or equal to the width of the steel beam flange, and is usually 1/2 of the steel pipe diameter, but the maximum is 4/5 of the steel pipe diameter.

(5) The projections at the end of the partition are implemented: the entire outer circumference and the tapered portions of the both sides and the outer sides have an outward slope, so that the entire outer circumference of the protrusion can be easily penetrated from the outside of the steel pipe column. Fusion welding. If the tapered end faces having the outward inclination are not formed at both end portions of the projections, the penetration welding at the end portions of the through holes and the bottom portion may become defective, which causes a great problem. Although the conventional welding system has a tapered surface in the direction of the welding line, the present invention is characterized in that the entire outer circumference of the protrusion is processed in the direction of the long-axis welding line of the protrusion and the direction perpendicular thereto. Outside the tapered surface. It is extremely difficult to infiltrate the fusion solder between the through hole of the steel pipe column having a thickness of 25 mm or more and the protruding end of the separator end in the direction of the axial direction, which is extremely difficult. It is difficult to make the end portion of the long-axis direction of the end portion of the spacer into an outward tapered surface, which is very important for infiltrating the fusion solder into the bottom of the through-hole of the entire steel tube column. This practice is not mentioned at all in other literature.

(6) In the box-shaped steel pipe column, such a large input heat energy of up to 500-1000 KJ/cm like electrothermal slag welding is not required, and the method of the present invention is generally used for welding carbon dioxide gas in general. For low input heat energy of 15 to 40 KJ/cm, it is possible to reduce the welding amount by about 75% and the welding input heat energy of 1/10 or less compared with the electric heating slag welding method, and it is possible to perform the welding speed of 10 times or more. Efficient construction. Moreover, the method of the present invention does not have the concern of welding cracks.

(7) The H-shaped steel beam is fusion-welded and overlapped on the welded portion provided with the entire outer circumference of the inclined tapered surface and the welded portion of the steel pipe column through-hole, and the inner partition and the angled steel pipe column are welded The welded portion with the flange of the steel beam is integrated by multi-layer welding.

At the same time, the invention of the present invention having such novelty, if the conventional angled steel pipe column is used for the four-sided box-shaped steel pipe column, in particular, there are various obstacles in the construction efficiency surface, especially in the fusion welding. Both the amount and the heat input of fusion welding have obstacles, so it is not easy to think from the conventional invention. In particular, it is not easy to think about the fact that the amount of fusion welding is greatly reduced and the high efficiency can be ensured by using small input heat energy. In the present invention, it is possible to assemble a separator (a non-divided single-piece separator) having a projection having a tapered surface over the entire periphery, which is easy to weld and includes both end portions, and is simply assembled. This view of the thick steel plate steel pipe to the predetermined inner diameter is not seen in other patent applications.

The invention of claim 2 of the present invention is configured such that the thickness of the inner partition plate is selected to be larger than the thickness of the steel beam flange and the short diameter of the through hole, as shown in Fig. 17, and the through hole is The width of the steel pipe column axis (ie, the short diameter width) is selected to be less than the thickness of the steel beam flange plate, and at least the inner surface of the steel pipe column on the mounting side of the steel beam flange and the partition plate are welded and welded from the steel pipe The outer side of the column is welded to the through hole and the partition. The reason why the thickness of the separator plate is selected to be larger than the thickness of the steel beam flange is because it must have endurance to withstand the force from the steel beam flange, and even if there is a difference between the steel beam flange and the inner partition Offset misalignment also allows the steel beam flange to remain received in the plane of the partition. It is indispensable to carry out the welding of the through hole and the partition from the outer side surface of the steel pipe column, but the reason why the width of the through hole is selected to be smaller than the thickness of the steel beam flange is to reduce the penetration. The reason for the amount of fusion of the holes. If the width of the through hole is selected to be smaller than the thickness of the steel beam flange, the sectional area of the thickness of the steel beam flange cannot be ensured. Therefore, the insufficient amount is at least in the assembled steel pipe column. Previously, the inner surface of the steel pipe column on the mounting side of the steel beam flange and the partition plate were welded from the inner side surface of the steel pipe column, so that the sectional area of the plate thickness portion of the insufficient steel beam flange could be compensated. It is common practice to join the fusion weld applied from the inner side to the fusion weld applied from the outer side to form a fully infiltrated weld. Usually, the inner welding is first applied by bottom welding, and then the outer welding is performed. However, the first layer of the welded welding applied from the outside can be sufficiently infiltrated by the large current. And then penetrate the welded portion that reaches the inside. As long as the safety of the welded joint of the through hole and the separator can be confirmed, it is also possible to adopt an incomplete penetration welding in which the welding performed from the inner side surface and the welding performed from the outer side surface are not connected together. .

The invention of claim 3 of the present invention is characterized in that, in the invention described in claim 1 or 2, the reinforcing plate is attached to the side of the narrow portion of the welded portion of the steel beam flange and the partition plate. And at least the steel beam axial end of the reinforcing plate is completely permeable welded to the steel beam flange and the partition. The purpose of this method is to compensate for the fact that when the welded portion between the steel web end web and the steel pipe column is hollow in the interior of the steel pipe column, the steel web end web cannot bear the flexural stress; The reason for the stress concentration on the side of the flange end of the steel beam; or the reason for reducing the height of the steel beam in order to reinforce the flange end of the steel beam. The reason why the reinforcing plate is mounted on the side of the narrow portion of the welded portion of the steel beam flange and the partition is because it is easy to perform ultrasonic flaw detection from the side where the width of the welded portion is large. The reason for the inspection.

According to the invention of claim 1, the object is a 4-sided box-shaped (4-sided box-shaped) steel pipe column having a quadrangular cross section, which is characterized in that it has an outward tapered tapered surface formed on the entire outer circumference of the projection. The raised single-plate inner partition is assembled into a through hole previously provided on the cylindrical surface of the steel pipe. If it is a stamped angled steel pipe column or a rolled steel plate angled steel pipe column, it is impossible to assemble the inner partition having the protrusion around the steel pipe column in advance. Therefore, by assembling the projection having the tapered surface in the through hole previously provided on the cylindrical surface of the steel pipe in this manner, the amount of welding can be greatly reduced. When the thickness of the surface plate of the steel pipe column is more than 25 mm, the cross-sectional area of the welded portion is only about 1/2 compared with the commonly used electrothermal slag welding method, and the welding length is a single surface of the cylindrical surface of the steel pipe. In other words, it is only the width of the flange of the steel beam, so the circumferential welding length of the steel pipe column is, on average, only about 1/2. Therefore, in this case, the amount of fusion welding needs only about 1/4. In other words, according to the integration and the entire continuous steel pipe column without cutting the angled steel pipe column, since the steel pipe column cutting operation is not necessary, the welding amount of the steel pipe column is reduced by 75% compared with the electric heating slag welding method. The degree of welding can improve the welding efficiency. It can be omitted: the side back abutting plate which is provided on the inner side of the inner partition of the electric slag welding method and which has a large inclined taper surface and can withstand large input heat energy. Moreover, in the electrothermal slag welding method, the opening operation of the welding start portion and the welding end portion, the installation and removal of the arc runner plate must be performed, and the input heat energy of the fusion welding is 500 to 1000 KJ/cm, relatively According to the method of the present invention, carbon dioxide gas welding is performed, and only a low input heat of 15 to 45 KJ/cm (usually 15 to 40 KJ/cm) is required, so that it is no longer necessary to be placed in the separator and Deterioration of ductility and toughness of steel pipe column flanges between steel beam flanges, and cracking phenomena such as weld cracks. Moreover, in the case of the conventional straddle type separator, the entire circumference must be welded at the upper and lower sides of the separator, and the additional welding height applied to the separator must be 1/4 of the thickness of the steel sheet. Therefore, in comparison with the straddle type separator method, the present invention only needs to perform about half of the welding length by a single welding wire, and the welding amount is reduced to about 1/4.

According to the invention of claim 1 of the present invention, it is not necessary to cut the steel pipe column for each floor. Compared with the practice of cutting the steel pipe column and cutting the steel pipe column for each floor, it is no longer necessary to assemble the steel pipe column of each layer again, and the length of the steel pipe column is not cut. And the problem of welding deformation, so the assembly accuracy in the length of the steel pipe column and in the direction of the steel beam is better.

According to the invention of claim 1 of the present invention, the partition does not protrude further outward than the outer side surface of the steel pipe column, so that the so-called "the outer edge of the cross-shaped partition is bent into an umbrella shape. The umbrella phenomenon is better when the outer wall of the building is installed, and the length of this part can be converted into an increase in the indoor space of the building because there is no more protruding portion of the partition. Length, this is also one of its effects. At least the steel pipe long pipe member welding portion and the steel beam end welding portion are separately welded, and then the two are connected to be integrated, so that the conventional steel pipe column and the partition plate can be prevented. The welding and the thermal deformation embrittlement of the baffle protrusion caused by the welding of the separator and the steel beam end. The material used for the separator is also reduced by 20 to 50% compared with the conventional method, which saves resources. Further, the welding between the inner partition plate and the angled steel pipe column, and the welding of the angled steel pipe column end including the through-hole welded portion are separately welded, and then the two are connected and integrated. As a result, the transmission of stress between the steel pipe column and the steel beam is smoother. Further, since the position of the inner partition plate can be clearly confirmed by the welding position of the through hole, there is no problem that the inner partition plate and the steel beam flange are displaced from each other. Moreover, since the inner partition does not penetrate the angled steel pipe column, there is no problem that the welding crack of the inner partition occurs.

According to the invention of claim 1 of the present invention, in contrast to the invention disclosed in Japanese Laid-Open Patent Publication No. 2002-146921, although it is also provided with a slit, a steel pipe column composed of such a thick steel plate having a four-sided box shape is formed. In this case, the cross section in the slit is large, and the end portion of the separator does not have a projection, so that the amount of fusion welding required is twice that of the present invention. According to the present invention, the end portion of the partition has a projection, and the entire outer circumference of the projection is formed with an outward tapered surface, and the projection of the end portion of the partition is inserted into the through hole for penetration welding, thereby penetrating the steel pipe column. Since the shape of the penetration welded portion between the hole and the separator is W-shaped, the cross-sectional area of the through hole of the present invention is smaller than that of the simple through hole, and the amount of fusion welding is also smaller. Further, the projection having the outwardly inclined tapered surface around the entire circumference, the inclined tapered surface processing performed at both end portions in the longitudinal direction of the projection not only prevents the defect at the bottom of the inclined tapered surface, but also makes the steel pipe The welding of the through-column of the column is easier, and the welding amount thereof is compared with the electrothermal slag welding method, which can bring about a large effect of reducing the welding amount by about 75%.

According to the invention of claim 2, the plate thickness of the separator is of course a thickness greater than the thickness of the steel beam flange, but the width of the through hole is selected to be less than the thickness of the steel plate flange, and At least the welding between the inner surface of the steel pipe column on the mounting side of the steel beam flange and the partition plate, and the welding between the through hole and the partition plate from the outer side surface of the steel pipe column to distinguish the inner and outer portions of the steel pipe column The side is welded, so the advantage is that the overall amount of fusion is less than that of welding from a single side of the outside of the steel column.

According to the invention of claim 3 of the present invention, as long as the reinforcing plate is attached to the end of the steel beam on the side of the weld bead of the welded portion of the partition plate and the steel beam flange, the end of the steel beam can be The web can not be reinforced by the bending strength component, and can also positively strengthen the end of the steel beam, so it can increase the safety against the damage of the end of the steel beam. Depending on the situation, sometimes the steel beam can be reduced. Size to reduce the weight of the steel. If the weight of the steel is reduced, it will not only reduce the cost, but also reduce the emission of carbon dioxide gas, which is also beneficial to the environment. In addition, the method of installing the reinforcing plate on the beam end portion of the welded portion of the steel beam flange which is narrower in the width of the bead can be mounted on the side of the wider bead width than the reinforcing plate. In the case of the inspection, it is easier to carry out inspections such as ultrasonic flaw detection.

[Example 1]

In the invention described in claim 1 of the present invention, the drawings 11 to 14 show the state of the embodiment of the present invention. Fig. 11 is an explanatory view showing the state of preparation of the four-sided box-shaped steel sheet before assembling the four-sided box-shaped steel pipe column, and the through hole is opened in advance on the steel pipe steel plate. Fig. 12 is a view showing an initial assembly state in which the separator is assembled to both surfaces of the steel sheet for a four-sided box-shaped steel pipe, and a projection having a tapered surface around the entire end portion of the separator is inserted into the through hole, The positioning is helpful. Fig. 13 is a view showing the intermediate assembly state in which the partition plate is assembled to the three sides of the steel plate for the four-sided box-shaped steel pipe; and Fig. 14 shows the intermediate assembly of the four sides of the steel plate for assembling the four-sided box-shaped steel pipe. Condition, then, when the corner portion of the steel pipe with the tapered surface is welded to the axial direction of the steel pipe column, the steel pipe is completed except for the welding work of the through hole, as long as the through hole is attached to the entire circumference. The box-shaped steel pipe column is completed by welding the inner partition of the inclined tapered surface.

Fig. 8 is a view showing a method of producing a steel skeleton structure characterized by forming a shape of a projection portion 1B having a tapered surface and forming a quadrangular pyramid, an elliptical cone, or a flat shape of the top of the projections. However, Fig. 8 shows an example in which the tip end of the projection 1B is formed into a flat quadrangular pyramid shape. Fig. 8(A) shows a case where the root width of the quadrangular pyramid is selected to be the same width as the width of the spacer 1A; and Fig. 8(B) shows that the root width of the quadrangular pyramid is selected to be smaller than the width of the spacer 1A. Happening. In the case of Fig. 8(A), as shown in Fig. 10(A), when welding the steel pipe column flange 5F and the separator 1A, it is necessary to use the back abutment plate 10 to prevent penetration welding. Drop it down. In the case of Fig. 8(B), since the shoulder portion is provided, it is not necessary to use the back abutment plate. Further, the inclination angle of the quadrangular pyramid and the elliptical cone, that is, the angle θ of the inclined cone surface on the quadrangular pyramid and the elliptical cone, the standard is 35°, but an angle other than this angle may be used. This projection has a certain angle throughout the entire circumference, that is, has a tapered surface over the entire circumference. In the present invention, as shown in Fig. 9, even at the end portion of the projection in the longitudinal direction, there is an outward inclination, that is, a tapered surface, even at this end, welding is performed. It also ensures sufficient penetration welding.

In the present invention, generally, a portion where no protrusion is provided, that is, a portion parallel to the inner side surface of the steel pipe column, is formed at the outer peripheral end portion of the inner partition plate, and the inner partition plate can be stably set in the steel pipe. The inner side of the column. A gap of 0.5 to 4 mm is usually reserved between the portion of the outer peripheral end of the inner partition which is not provided with the projection and the inner side of the steel pipe column. This is to facilitate the penetration welding of the bottom portion of the through hole and the projection, and to facilitate the insertion of the inner partition when it is inserted into the inner side surface of the steel pipe column. Further, the length of the through hole is generally set to be about 0 to 10 mm larger than the length of the bottom of the projection in order to minimize the amount of fusion welding.

[Embodiment 2]

In the invention according to claim 1 of the present invention, the purpose of stably welding the outer surface of the steel pipe column is as shown in an example of Fig. 10(A), and the back surface abutting plate 10 can be provided. In the inner part of the through hole. Further, as long as the back surface abutment plate 10 is attached in advance, it may be used as a guide member or a stopper member when the partition plate 1A is provided to the through hole.

[Example 3]

Although the invention has been described with respect to an angled steel pipe, it can also be adapted to a circular steel pipe. For example, if the circumference of the circular steel pipe is divided and assembled into an angular steel pipe, the same applies to the case of the angular steel pipe. In this case, the outer peripheral welding of the circular steel pipe is divided into two halves at least in the axial direction of the welded joint, the planar shape of the inner partition is circular, and the planar shape of the end portion of the steel beam is formed into a circular arc shape.

[Example 4]

In the inventions described in claims 1 to 3 of the present invention, as shown in FIG. 20, when the inner separator 1A and the steel pipe column 5 are welded, or the welded portion 22 is overlapped. In the case of performing full penetration welding of the H-shaped steel beam flange 4 above, the end surface 14 of the predetermined joint of the inner partition or the back surface 14 of the joint end of the H-shaped steel beam is previously implemented. The method of surfacing is also effective. When the surfacing is performed on the side surface of the end portion of the separator 1A in advance, the effect of increasing the thickness of the plate at the end portion of the separator can be expected. Therefore, a separator having a thin steel plate thickness can be selected, which is one of the effects. That is, in the case where the surfacing is performed on both ends of the inner partition 1A, the thickness of the inner steel plate 1A can be reduced by 10 to 20 mm as compared with the case where the surfacing is not performed.

[Example 5]

In the inventions of claims 1 to 3 of the present invention, as shown in Fig. 21, after welding the flange end of the steel beam to the steel pipe column, the joint is welded to the flange end of the steel beam. In the case where the surfacing 21 is performed on the side of the steel beam flange, the stress concentration factor at the end of the steel beam can be alleviated, and the rigidity of the end portion of the steel beam can be improved. The size of such a weld overlay is such that the thickness of the steel pipe flange is such that the length is 20 to 200 mm and the height is 3 to 10 mm. In order to alleviate the stress concentration, it is best to start the surfacing from the steel beam end and then gradually increase the height of the surfacing.

[Embodiment 6]

In the inventions described in claims 1 to 3 of the present invention, the proposed technical solution is such that, as shown in Figs. 15 and 19, the back end plate is not provided at the end portion 4 of the steel beam flange and The scalloped notch is formed by superposing the end portion 4 of the steel beam flange on the welded portion 22 of the steel pipe column 5 and the partition plate 1A to perform complete penetration welding, and the steel bone structure as a feature thereof .

[Embodiment 7]

According to the invention of claim 3, in the sixteenth aspect, both ends of the reinforcing plate in the axial direction of the steel beam are subjected to oblique taper processing, and the two end portions are respectively on the side of the steel pipe column and Full penetration welding is performed on the flange side of the steel beam. This fully infiltrated welding system has the function of approximating the stress in the direction of the steel beam axis of the steel beam flange to the reinforcing plate. And the profile factor of the end of the steel beam can be increased. Moreover, the width of the reinforcing plate 28 is about 10 mm or more backward from the side end of the steel beam when the partition plate and the steel beam flange are welded in the factory, and is kept downward without the bracket. In the case where the posture is welded in the field, when the separator and the steel beam flange are welded, the side end of the steel beam extends outward by about 10 mm or more. As a result, the fillet welding of the steel beam flange 4 and the reinforcing plate 28 can be easily performed and the corners of the end portions of the steel beam are not melted. This fillet welding is mainly to prevent the reinforcing plate from being frustrated. The thickness of the separator in the case where the reinforcing plate is attached increases the thickness of the reinforcing plate, and the reinforcing plate 28 must be in the same plane of the separator 1A.

[Embodiment 8]

The method for producing a steel skeleton structure according to the invention of claims 1 to 3 of the present invention, characterized in that the partition portion in the direction in which the steel beam shaft is aligned and the welded portion on the side surface of the steel pipe column flange The sum of the longitudinal sectional areas is equal to or greater than the sum of the steel beam flanges and the cross-sectional area in the in-line direction (=1.7321) or more.

[Embodiment 9]

According to the inventions of claims 1 to 3 of the present invention, as shown in Fig. 18, it is shown that the angled steel pipe column 5 does not cut the steel pipe column for each floor of the building, but is produced. A continuous column in which the lengths of two to four floor portions are continuous, and a through hole corresponding to a steel beam flange cross-sectional shape or larger is formed in the steel beam flange mounting position of the angled steel pipe 5, and the through hole is formed in the through hole At position 27, the inner partition plate 1A is disposed inside the angled steel pipe column 5, and the angled steel pipe column 5 and the inner partition plate 1A are welded and welded by welding the through holes 22 from the outer side surface of the angled steel pipe column 5. Then, the angled steel pipe column 5 including the through-hole welded portion 22 and the H-shaped steel beam flange 4 are welded and joined to form a steel skeleton structure. The fusion welded portion 17 may be welded using the back abutment plate 10 or may be welded without using a back abutment plate or an arc runner. As shown in Fig. 18, the shape of the inner partition plate is a shape in which the corner portion of the square shape is cut by a truncated angle, but a shape in which the inner side surface of the angled steel pipe column is fitted may be employed. The thickness of the steel plate of the partition plate is such that the center of the steel beam flange and the inner partition plate are not staggered, and when the through-hole welding is performed from the outer side surface of the steel pipe column, the molten metal is not dropped to the steel pipe column. For the inner side, the thickness of the steel sheet of the partition is usually 5 to 15 mm larger than that of the steel beam flange. Further, as shown in Fig. 8, a projection 1B is provided at the center of the thickness of the inner partition plate 1A, and the through hole 24 opened in the cylindrical surface of the steel pipe is used as a guide member, and the inner partition plate is angled. It is helpful to insert the inside of the steel pipe column 5 or to fix it. Further, in the fusion welding of the through holes 22, even if the steel beam is only in one direction, in order to withstand the stress applied from the steel beam, the through holes are usually welded to the four faces of the box-shaped steel pipe column 5. twenty two. In the case where only one steel beam is placed on the steel pipe column 5, at least the through hole is required to be provided on the cylindrical surface of the steel pipe on which the steel beam is mounted, and is located on the cylinder surface opposite to the cylindrical surface on which the steel beam is mounted. The welding can be omitted. The cylindrical surface on the side of the cylindrical surface on which the steel beam is mounted is not a through hole, but can be welded or partially welded between the inner side surface of the steel pipe column and the partition. Infiltration welding.

[Embodiment 10]

In the method for producing a steel skeleton according to the embodiment of the first aspect of the present invention, the thickness of the separator may be selected to be larger than the projection having the tapered surface as shown in the lower partition 1A of Fig. 8. The width of the root portion and the width of the through hole are provided at the root portion of the protruding portion having the inclined tapered surface, and the steel pipe column and the partition are performed in the manner shown in the upper portion of FIG. 10(B) or FIG. When the plate is welded, the weld metal is not allowed to fall. In this case, it is the same as shown in Fig. 10(A), Fig. 15 or Fig. 20, and is not required for the inner partition. Use the back abutment plate or perform surfacing.

[Example 11]

In the inventions of claims 1 to 3 of the present invention, as shown in Fig. 20, the surfacing 14 is used instead of the both ends of the inner partition 1A, and the upper side as shown in Fig. 15 can be used. In the inner partition plate and the method shown in Fig. 16, the back surface abutment plate 10 is preliminarily mounted by the pre-weld welding 8 on both ends of the inner partition plate 1A, and the inner partition plate 1A and the inner partition plate 1A can be stably performed. A good method of welding the through holes of the angled steel pipe column 5 is one of the application examples of the present invention. In this case, in the case where such a back abutment plate 10 is used, it is possible to stably perform the through-hole welding without increasing the thickness of the inner partition plate as compared with the case where the back surface abutment plate 10 is not used. twenty two.

[Embodiment 12]

In the invention according to the first to third aspects of the present invention, the four-sided box-shaped welded longitudinal joint is such that the back abutment plate for the vertical joint is not passed through as shown in Figs. 12 to 14 The partition plate penetrates and the back surface abutment plate is not provided between the partition plates. However, as shown in Fig. 22, the inner partition plate may be passed through and the back surface abutment plate may be provided on the back surface of the welded longitudinal joint 37. In this case, the corners of the inner partition must be cut off from the back against the board. The construction of the vertical joint welding 37 for the four-sided box-shaped assembly can be smoothly performed in one go by inserting the back abutment plate 10 through the partition plate 1A. Further, the fact that the back abutment plate 10 does not penetrate the partition plate 1A has the advantage that the groove through-hole 27 of the portion where the steel beam flange is joined is closer to the side surface of the steel pipe column.

[Industrial availability]

In general, for the welding of box-shaped steel pipe columns of thick steel plates with a thickness of more than 25 mm, because of the large amount of welding, the current mainstream is electrothermal slag welding using large input heat. However, this method causes problems such as deterioration of the base material and cracking due to large input heat energy; and the arrangement of the start portion (starting end portion) and the end portion (terminal portion) of the fusion welding and the afterthought It takes a lot of time to organize the work. However, according to the present invention, since the welding input heat energy is low, the material deterioration is small, the amount of fusion welding can be reduced by 75%, and the arrangement of the start portion (starting end portion) and the end portion (terminal portion) and the finishing work afterwards are almost performed. None, so it is very efficient and has great value.

1. . . Partition of steel beam and column joints

1A. . . Inner partition of the joint of the steel beam and column of the building

1B. . . a protrusion provided at the end of the inner partition

1C. . . Inclined taper surface of the protrusion at the end of the inner partition

2. . . An angular steel tube between the partitions or a short tube of a four-sided box-shaped steel tube; a member composed of 1 and 2 is called a braid-shaped cube

3. . . H-shaped steel beam

4. . . H-shaped steel beam flange

5. . . Steel pipe column composed of angled steel pipe or 4-sided box-shaped steel pipe

5A. . . 4-sided box-shaped steel pipe

5B. . . 4-sided box steel pipe

5F. . . Steel pipe column flange or surface plate

6. . . Angled steel pipe or welded joint of 4-sided box-shaped steel pipe and partition

7. . . Welding section of steel beam flange and partition

8. . . Pre-weld or assembly weld

9. . . H-shaped steel beam web

10. . . Back abutment plate

11. . . Sector gap

13. . . Flange or angled steel pipe or four-sided box-shaped steel pipe

14. . . Performing a build-up on the back or surface or side of the component or a primer welding from the back of the component

15. . . L-shaped tapered surface

15A. . . I tapered surface

16. . . Component of the other party

17. . . Joint welding section

18. . . The thickness or flesh thickness of the member 13

19. . . The substantial thickness of the welded portion of members 16 and 13

20. . . Surfacing on the side, top or back of the flange

twenty one. . . Steel beam stress concentration section

twenty two. . . Steel pipe column formed by angled steel pipe or 4-sided box-shaped steel pipe and through hole or groove welded portion of inner partition plate

twenty three. . . Welding section between angled steel pipe or 4-sided box-shaped steel pipe and H-shaped steel beam web

twenty four. . . a through hole in the center of the inner partition

27. . . Through hole (groove) formed by fitting a steel beam flange shape on an angled steel pipe or a 4-sided box-shaped steel pipe surface

28. . . Reinforcing plate

28L. . . Reinforcement plate length

29. . . Steel pipe column flange (or surface plate) sandwiched between the inner baffle and the welded portion of the beam flange

30. . . Through hole width (gap)

31. . . Narrow width (gap) of the through hole

32. . . Welded portion of box-shaped steel pipe through hole (groove)

33. . . Welding section of the inner side of the steel pipe column and the inner partition

34. . . Welding end of steel beam end and steel pipe column

35. . . Full penetration welding of the reinforcing plate and the steel beam flange

36. . . Full penetration welding of the welded plate and the welded section of the steel pipe column

37. . . Steel pipe column longitudinal joint

Fig. 1 is an example of a perspective view of a conventional steel-beam-column joint of a building.

Fig. 2 is a cross-sectional view showing a joint portion of an angular steel pipe, a partition plate, and a flange of a conventional steel skeleton-pillar joint portion.

Fig. 3 is a cross-sectional view showing the construction condition of the inner partition loaded inside the angled steel pipe column.

Fig. 4 is a cross-sectional view showing a four-sided box-shaped steel pipe subjected to the conventional electrothermal slag welding method.

Fig. 5 is a longitudinal sectional view showing a four-sided box-shaped steel pipe which has been subjected to the conventional electrothermal slag welding method.

Fig. 6 is an external view showing a through hole having a circular arc-shaped end portion similar to the cross-sectional shape of the steel beam flange on the panel of the four-sided box-shaped steel pipe.

Fig. 7 is an external view showing a dumbbell-shaped through hole similar to the cross-sectional shape of the steel beam flange on the panel of the four-sided box-shaped steel pipe.

Fig. 8 is an explanatory view showing a projection having a tapered surface at the end of the inner partition. Fig. 8(A) shows a case where the root width of the projection is equal to the thickness of the separator, and Fig. 8(B) shows a case where the root width of the projection is smaller than the thickness of the separator and has a flat portion around the root of the projection.

Fig. 9 is a central cross-sectional view of the through hole in a state in which the inner partition end is inserted into the through-hole of the steel pipe column flange and the inner partition is installed in the four-sided box-shaped steel pipe.

Fig. 10 is an explanatory view showing an installation state of a projection having a tapered surface at the end of the inner partition. Fig. 10(A) shows a case where the root width of the projection is equal to the thickness of the separator, and Fig. 10(B) shows a case where the root width of the projection is smaller than the thickness of the separator and has a flat portion around the root of the projection.

Fig. 11 is an explanatory view showing the preparation state of the four-sided box-shaped steel sheet before assembly, and a through hole is formed in advance on the steel column steel sheet.

Fig. 12 is a view showing an initial assembly state in which the partition plate is assembled to both sides of the four-sided box-shaped steel sheet; the projections attached to the end portions of the partition plate contribute to the positioning of the partition plate.

Fig. 13 is a view showing the intermediate assembly state in which the partition plate is assembled to the three sides of the four-sided box-shaped steel sheet.

Fig. 14 is a view showing an intermediate assembly state in which the partition plate is assembled to the four sides of the four-sided box-shaped steel sheet.

Fig. 15 shows a part of the through hole in which the partition plate is assembled to the four-sided box-shaped steel pipe column, and the entire outer peripheral peripherally provided partition plate and the steel pipe column are welded, and then the stacked portion is already stacked on the welded portion. After the welded steel beam ends are aligned, the welding of the steel beam flanges is superimposed.

The 16th figure is to weld the inner partition plate and the angled steel pipe column in the through hole, so that the reinforcing plate is completely penetrated and welded on the inner side of the steel beam flange, and is superposed on the through hole welding portion for welding, and the steel beam web is welded. A cross-sectional view of fillet welding to an angled steel pipe column.

Figure 17 shows that the width of the through hole is set to be less than the thickness of the flange of the steel beam, and at least the inner surface of the steel pipe column and the partition and the outer side of the steel pipe column and the partition are welded to the flange side of the steel beam. Sectional view.

Figure 18 shows that the inner baffle and the angled steel pipe column are welded in the through hole, the steel girder flange is overlapped in the through hole welding portion for welding, and the steel girder web is fillet welded to the angled steel pipe column. Above the cross section above.

Fig. 19 is a longitudinal sectional view showing a state in which the welding is performed on the back surface of the steel beam flange by the beam-column joint portion in which the inner partition plate and the steel beam flange are directly connected.

Figure 20 shows the pre-welding of the beam-column joints where the inner baffle and the steel girder flange are directly joined, before the joint welding of the inner side of the inner baffle and the back of the steel girder flange. Longitudinal section view.

Fig. 21 is a view showing a beam-column joint portion in the case where the surfacing is performed on the side of the beam end portion.

Fig. 22 is a view showing a state in which the back surface of the four-sided box-shaped welded longitudinal joint abuts against the corner of the partition.

Fig. 23 is a schematic cross-sectional view showing the shape of the penetration welded portion between the through-hole of the steel pipe column and the projection provided on the outer peripheral portion of the end surface of the inner partition. Fig. 23(A) shows the shape of the penetration welded portion in the longitudinal section of the projection. Fig. 23(B) shows the shape of the penetration welded portion of the cross section of the projection.

1A. . . Inner partition

4. . . Steel beam flange

5. . . Steel pipe column

14. . . Surfacing

twenty two. . . Welding department

34. . . Welding end of steel beam end and steel pipe column

Claims (3)

A method for manufacturing a steel skeleton structure is characterized in that, in the case where a four-sided box-shaped steel pipe column having a square cross section and a steel plate thickness of 25 mm or more is welded and assembled, the four-sided box shape is used. The steel pipe column is not cut off for each floor, but is opened in the horizontal direction on the steel plate of the steel pipe cylinder at a predetermined position of the four-sided box-shaped steel pipe column for mounting the steel beam flange. The through hole has a length equal to or greater than the flange width of the steel beam and is a length of 4/5 or less of the diameter of the steel pipe, and the end portion has a circular or dumbbell shape, and the inner partition is adjacent to the inner wall of the steel pipe column. A protrusion is provided at an outer peripheral end portion, and an outward oblique taper surface is formed on the entire periphery of the protrusion including the both end portions of the protrusion, and a part or all of the protrusion having the tapered surface is formed on the four sides The box-shaped steel pipe column is inserted into the through hole before being welded and assembled by four steel plates, and the inner partition plate and the angle having the thickness of the H-shaped steel beam flange plate and the plate diameter of the through hole are smaller than the short diameter. Permeation of the through hole of the steel pipe column The welding is performed such that the longitudinal section and the cross-sectional shape of the penetration-welded portion are W-shaped, and at least the outer side surface is welded, and then the angled steel pipe column and the H-shaped steel beam including the welded portion are further welded. The flange is welded and welded. The method for producing a steel skeleton structure according to claim 1, wherein the thickness of the separator is selected as a thickness of the steel beam flange and a thickness of the through hole shorter than the short diameter, and the through hole The short-diameter width is selected to be the width below the thickness of the steel beam flange plate, at least the inner plane of the steel pipe column on the flange side of the steel beam is welded to the partition plate, and the through hole is formed from the outer side surface of the steel pipe column. The separator is welded. The method for producing a steel skeleton structure according to the first or second aspect of the invention, wherein the steel beam on the side of the weld bead having a narrow bead width in the welded portion of the partition plate and the steel beam flange At the end, the reinforcing plate is installed, at least the steel pipe column side end portion of the reinforcing plate in the axial direction of the steel beam and the partition and the steel beam axial direction end portion of the reinforcing plate are completely completed. Infiltration welding.