WO2003072885A1

WO2003072885A1 - Column-to-beam connection part integration work method for structural steelwork

Info

Publication number: WO2003072885A1
Application number: PCT/JP2003/002329
Authority: WO
Inventors: Masayoshi Uhida; Shunji Iwago; Tadao Nakagomi
Original assignee: Masayoshi Uhida; Shunji Iwago; Tadao Nakagomi
Priority date: 2002-02-28
Filing date: 2003-02-28
Publication date: 2003-09-04
Also published as: JP2003253758A; JP3676310B2

Abstract

A column-to-beam connection part integration work method for a structural steelwork capable of solving such problems with a conventional column-to-beam connection part of a construction structural steelwork that, though a block for the column-to-beam connection part is manufactured in combination of steel pipes with diaphragms, various problems occurred such that a structure is complicated, a stress is concentrated, a strain occurs, and a man-hour for production is increased, and though a method to integrate the block with cast steel is planned to improve these problems, a structure is complicated, manufacture is not easy, and application to beams with different sizes is not easy, comprising the steps of forming a welded rectangular parallelepiped (23) into an integral block with rolled steel, forged steel, or cast steel, optimizing the manufacture of the block for each size, and integrally forming a column (5) and a block (23) and a beam (4) and the welded parts (24) and (25) of the block (23), whereby the stress concentration, occurrence of strain, brittleness of heat affected part can be eliminated, and the amount of use material and the man-hour for manufacture can be reduced.

Description

Description Technical method for integrating beam-column joints of steel structures

The present invention produces a building steel structure by integrating a rolled steel plate with a forged steel plate without assembling a dice portion from a thin steel plate or the like by welding at a beam-to-column joint of the building steel structure. It is about methods. Background art

In the conventional technology, as shown in FIG. 1, a column-beam joint of a building steel structure is formed by applying a weld 6 between a diaphragm 1 made of a thin steel plate and a short rectangular steel pipe 2 to form a die. In many cases, the mouth and the H-shaped steel beam flange 4 are welded and joined 7, and the dice and the square steel pipe column 5 are often welded and joined. In this conventional technique, as shown in Fig. 2, welding 6 between the rectangular steel pipe 2 of the die and the diaphragm 1 and welding 7 of the diaphragm 1 of the die opening and the H-shaped steel flange 4 are performed by using a backing metal 10. It is performed by one side welding. In the conventional welding method of the diaphragm 1 and the beam flange 4, the groove 4 is formed at the end of the flange 4 to be joined, and then the backing metal 10 is manufactured and the tacking welding 8 for mounting the backing metal is performed. The main welding 7 has been carried out. Also, for welding the diaphragm 1 and the square steel pipe 2 or 5, beveling of the joint end of the square steel pipe 2 or 5 is performed, and then the backing metal 10 is manufactured and the backing metal is temporarily attached. 8 and the main welding 6 between the diaphragm 1 and the square steel pipe 2 or 5 was performed.

Further, as shown in Fig. 3, a non-consumable copper abutment 12 is applied to the back surface of the end of the welded joint member 13 to perform a build-up welding 14 and then a beveling process is performed to 13 C At the position of, beveling including the overlay 14 is obtained, and as shown in FIG. 5, a groove 15 including the member 13 and the overlay 14 is obtained. Without using backing metal or backing material of the type, joint welding 17 is performed by one-side welding method in which members 16 and 13 are welded from one side, and the plate thickness 18 at the end of the welded joint member is reduced. There is a way to get a thickness of over 19.

In addition, as shown in FIG. 4, a non-consumable copper abutment 12 having a projection 12 P on the back surface of the end of the welded joint member 13 is applied to the welded joint member 13, and after performing the overlay welding 14, the groove is formed. At the 13C position, only the end of the member 13 was grooved to obtain a groove 15 including the member 13 and the overlay 14 as shown in Fig. 5. As shown in the figure, without using consumable backing metal or backing material, joint welding 17 was performed by one-side welding method in which members 16 and 13 were welded from one side, and the members at the end of the welded joint member were There is a way to get a throat thickness of 19 over a plate thickness of 18.

On the other hand, as shown in FIG. 7, a cylinder body or dice 20 integrated with steel and having a concrete filling hole 21 and an auxiliary plate 22 is disclosed in Japanese Patent Application Laid-Open No. 2000-144493. (Japanese Patent Application No. 10-31 2771).

However, most of the conventional building steel beam-column joints are made of dice as shown in Fig. 1. In Fig. 1, diaphragm 1 · square steel pipe 2 · backing metal 10 ■ There are many members such as end tabs and welding 6 Circles around the square steel pipe 2 and has a large amount of welding. As a result, the cost of parts production increases, and after the dice is manufactured, the diaphragm bends, as shown in Fig. 34, causing the so-called umbrella breaking phenomenon, and the misalignment between the diaphragm and the beam flange tends to occur. is there. Also, it is troublesome and costly to attach the backing metal 10 to the inner periphery of the end of the rectangular steel pipe 2 and perform the tack welding 8. In addition, since the welding 6 of the square steel pipe 2 and the diaphragm 1 is performed over the entire circumference, the welding amount is large, so not only the welding residual stress is increased, but also if the backing metal 10 is used, the members 4 and 5 are connected to each other. Notches are formed between the parts, resulting in stress concentration and weakening of the strength Becomes

Further, as shown in FIG. 7, the dice 20 integrally molded from the conventional steel sheet has a relatively simple structure as compared with the conventional welding structure shown in FIG. 1, and has an advantage that the structural resistance is improved. is there. However, the structure shown in FIG. 7 requires two reinforcing plates 22 vertically and a total of four reinforcing plates 22, and the space 22 A formed by the reinforcing plates 22 extends inside. And requires three spaces per body. Such a space 22 A requires a complicated core during fabrication, which leads to an increase in man-hours for manufactur- ing cores and man-hours for construction, which is a factor of cost increase. Also, as shown in Fig. 7, when the beam, that is, the height of the beam to be joined to the dice is much lower than the dice, that is, the height, the horizontal position of the internal reinforcing plate and the horizontal position of the beam flange are matched. Although it is set, the horizontal position of this internal reinforcing plate needs to be manufactured in consideration of the height of the beam, and when there are various beam heights, it is difficult to manufacture and the beam height is limited. A similar problem exists when the internal reinforcing plate is omitted or replaced with a rib at one corner.

Furthermore, in general, the heat-affected zone of the weld is easily brittle.Conventionally, when two welds are close to each other, the two heat-affected zones overlap to prevent further embrittlement due to overlapping of the heat-affected zones. It is customary to keep the heat affected zone away from the heat affected zone. In particular, there is a problem if the portions where the welding heat effects of both welds overlap are exposed on the outer surface. In the above-mentioned Japanese Patent Application Laid-Open No. 2000-1444491, there is no description about the proximity of the welded portion. However, as shown in FIG. However, when a common welding heat affected zone 35 is formed on the outer surface near the weld 25 between the beam 4 and the integrated die 23 and sandwiched between the two welds, the heat affected zone becomes a single There is a problem that it is more fragile than the heat-affected zone.

Conventionally, building steel frames are assembled in a factory by installing dice and short beams to form a panel zone, and connecting columns to the panel zone by welding. The product is manufactured to a length of three stories, and the columns with panel zones are erected at the construction site, and then the short beams are connected by bolts using long beams. In this conventional method, the columns with beams have a short length of about 1 meter, but extend in four directions perpendicular to the columns, so the efficiency of transportation from the factory to the site is poor, and the beams at the construction site The problem is that joining with a large number of bolts requires more man-hours and costs than welding.

Therefore, an object of the present invention is to use a rolled steel / forged steel / steel, simplify the structure of a steel joint, relieve stress concentration, improve strength, and reduce manufacturing costs. . Disclosure of the invention

As a result of various researches to solve these problems, it was determined that it would be better to integrate the dice part instead of the psycho mouth composed of members 1 and 2 shown in Fig. 1. In order to solve the problem of integrated dice shown in Fig. 7, as a result of various studies, the reinforcement plate was omitted to make it solid, and the problem of overlapping of the heat affected zone shown in Fig. It has been found that this can be achieved by integrating the beam welds. When the dice are made solid, since only thick parts can be manufactured with 錡 steel, it is meaningless to make a cavity in the axis as the size of the dice becomes smaller. When solid, it was found that thick rolled and forged steel materials could be manufactured.

Therefore, in the present invention (the invention according to claim 1), in a building steel frame structure, the configuration of the invention is as follows. First, a die is manufactured by subjecting rolled steel to hot working, mechanical working, or welding working. A rectangular parallelepiped, or a solid rectangular parallelepiped manufactured by forging, or a solid rectangular parallelepiped manufactured by forging. The following configuration is a beam that joins the vertical overall length, that is, the height, of the rectangular parallelepiped to the rectangular parallelepiped. Height of the rectangular parallelepiped, and That is, the length of the horizontal side is made equal to the outer dimension of the column to be joined to the rectangular parallelepiped, that is, the length of the horizontal side, and the welded portion of the beam and the column to be joined to the rectangular parallelepiped is integrated by overlapping. According to these structures, the beam and the side surface of the rectangular parallelepiped, and the column and the upper and lower ends of the rectangular parallelepiped are welded to each other to produce a steel structure. That is, the present invention (the invention according to claim 1) is to make the height of a steel solid rectangular parallelepiped equal to the height of a beam to be joined to the rectangular parallelepiped in an architectural steel structure, and to increase the upper end of the rectangular parallelepiped. And, the outer dimensions of the lower end are made equal to the outer dimensions of the column to be joined to the rectangular parallelepiped, and the beam and the side of the rectangular parallelepiped and the column and the column are joined so that the welded portion between the beam and the column to be joined to the rectangular parallelepiped is integrated. This is a method of integrating column and beam joints of a steel structure, which is characterized in that a steel structure is manufactured by welding and joining a vertical end face of a rectangular parallelepiped.

The novelty of the present invention is that the dimensions of the rectangular parallelepiped are made equal to the dimensions of the columns and beams as a solid rectangular parallelepiped, and the two welds of the column and beam members to be joined are overlapped and integrated. To make it happen.

The rectangular parallelepiped here means a hexahedron whose all six sides are rectangular, a hexahedron whose upper and lower surfaces are square and the other side is rectangular, a cube (regular hexahedron), and an oblique body whose one or more sides are not parallel to other sides including. The term “equivalent” as used herein does not mean that they are the same, and is regarded as equivalent even if the dimensions of the rectangular parallelepiped are different from the dimensions of the beam or column to such an extent that the welded portion between the column and the beam can be integrated. Normally, deviations of about 1/4 to 1 Z2 of the column or beam thickness are considered equivalent. The same applies to the following inventions.

Next, the invention according to claim 2 will be described.

In the invention of claim 1, it is suitable to be applied when the length of the horizontal side of the dice (rectangular parallelepiped) is relatively small, approximately 250 mm or less. However, if the length of the horizontal side of the syco mouth is further increased, the solid part increases, the weight increases, and the cost increases. Therefore, if a space is provided to penetrate along the central axis, the weight of the dice can be reduced, but the diameter of this through hole is made too large. It was found that the in-flange strength of the solid part became weaker than that of the beam flange than that of the column. Therefore, if the minimum width of the solid partial cross section of the upper end face or lower end face of the rectangular parallelepiped is set to be 25% or more of the beam flange width or 25% or more of one side of the rectangular parallelepiped, respectively, It has been found that weight can be effectively reduced without compromising strength. However, when the reinforcing plate shown in Fig. 7 is used, as described above, ease of manufacture, cost, and flexibility of the position of the beam flange are not sufficient, and inconvenience occurs when applied to a structure. On the other hand, if it is a columnar space such as a cylinder, it can be easily manufactured by hot working such as mechanical gas cutting of rolled steel.製作 Can be easily and inexpensively manufactured without using a fabrication method. The novelty of the present invention resides in that in addition to the novelty of the invention according to claim 1, a substantially uniform cylindrical space is provided in the vertical center axis of the rectangular parallelepiped.

Therefore, in the invention according to claim 2, in the architectural steel structure, the first configuration to be investigated is a solid rectangular parallelepiped manufactured by rolling, rolling, or hot working a rolled steel, or A solid rectangular parallelepiped manufactured by forging, or a solid rectangular solid manufactured by forging. In the second configuration, the total length of the rectangular parallelepiped in the vertical direction is made equal to that of the beam joined to the rectangular parallelepiped. In the third configuration, the outer dimensions of the upper end and the lower end of the rectangular parallelepiped, that is, the lengths of the sides are equal to the outer dimensions of the pillars joined to the rectangular parallelepiped, that is, the lengths of the sides. As a fourth configuration, the minimum width of the solid partial cross section at the upper end face or lower end face of the rectangular parallelepiped is 25% or more of the beam flange width, or the rectangular parallelepiped of the rectangular parallelepiped, respectively. More than 25% of one side, Further, as a fifth configuration, a method of manufacturing a steel structure by making a welded portion of a beam and a column to be joined to the rectangular parallelepiped overlap with each other is adopted. With these configurations, the beam and the rectangular parallelepiped are formed. In this method, a steel structure is manufactured by welding the side surfaces and the upper and lower ends of the column and the rectangular parallelepiped. That is, the present invention (the invention according to claim 2) is the invention according to claim 1, wherein a space penetrating in the vertical direction along the vertical center axis of the rectangular parallelepiped is provided in the rectangular parallelepiped, and A column of a steel structure, characterized in that the minimum width of the solid part cross section at the end face or the bottom face is at least 25% of the beam flange width or at least 25% of one side of the rectangular parallelepiped, respectively. This is an integrated beam joint construction method.

It should be noted that dice (a rectangular parallelepiped) provided with a space penetrating in the vertical direction are also a part of the present invention, including a die formed by welding or a thick pipe.

Next, the invention according to claim 3 will be described.

In the invention of claim 1, it is suitable to be applied when the length of the horizontal side of the dice (rectangular parallelepiped) is relatively small, about 25 O mm or less. However, when the length of the horizontal side of the dice is further increased, the volume of the solid portion is increased, the weight is increased, and the material cost is increased. Therefore, as described above, a method of providing a space penetrating in the vertical direction on the vertical center axis of the rectangular parallelepiped is also effective. However, the vertical intermediate portion of the solid rectangular parallelepiped is thinner than the upper and lower portions of the solid rectangular parallelepiped. This can reduce the increase in weight. However, it has been found that if the intermediate portion is made too thin, the bending strength of the intermediate portion becomes weaker than that of the beam, as compared with the beam. Using the second moment of area at, it was found that it is important that the second moment of area of the dice be larger than the second moment of area of the upper or lower column near the dice. The novelty of the present invention resides in that, in addition to the novelty of the invention according to claim 1, the intermediate portion of the rectangular parallelepiped is made narrow while securing the second moment of area of the column adjacent above and below.

Therefore, in the invention according to claim 3, in the building steel structure, the first configuration of the invention is a solid rectangular parallelepiped manufactured by rolling or rolling a rolled steel, or a forged die. A solid cuboid manufactured by the following method, or a solid cuboid manufactured by the And the outer dimensions of the upper and lower ends of the rectangular parallelepiped, that is, the lengths of the sides, are equal to the outer dimensions of the columns that are bonded to the rectangular parallelepiped, that is, the lengths of the sides. Then, in the third configuration, the vertical intermediate portion of the solid rectangular parallelepiped is made thinner than the upper and lower portions, and as a fourth configuration, the upper section for joining the second moment of area of the intermediate portion to the solid rectangular parallelepiped A method of manufacturing a steel structure by setting the cross section of the column or lower column to be equal to or more than the second moment, and as a fifth configuration, by making the welded portion of the beam and the column joined to the rectangular parallelepiped overlap each other. According to these configurations, the beam and the side surface of the rectangular parallelepiped and the pillar and the upper and lower ends of the rectangular parallelepiped are welded to each other to produce a steel structure.

That is, the present invention (the invention according to claim 3) is the invention according to claim 1, wherein the intermediate portion in the lead E direction of the solid rectangular parallelepiped is thinner than the upper and lower portions and the second moment of area of the intermediate portion is reduced. A method of integrating a column-beam joint of a steel structure, wherein the rectangular column is manufactured so as to have a second moment or more in cross section of an upper column or a lower column joined to the solid rectangular parallelepiped.

Next, the invention according to claim 4 will be described.

In the inventions according to Claims 1, 2, and 3, it is appropriate to apply when the length of the horizontal side of the dice is approximately 350 mm or less. However, if the length of the horizontal side of the mouth is further increased, even if a space is provided in the vertical direction of the solid rectangular parallelepiped forming the dice, or even if the intermediate portion is narrowed, the volume of the solid portion is reduced. As the weight increases, the material cost increases. On the other hand, there is a method of hollowing the inside of the rectangular parallelepiped as shown in FIG. 7, but it is not easy to manufacture the side wall of the rectangular parallelepiped to a thickness of about 40 mm or less by a forging method. It is difficult to further reduce the weight of a simple cavity that leaves the entire circumference of the side wall, and it is still difficult to manufacture by rolling or forging.

Therefore, the material of the rectangular parallelepiped forming the dice is made of stainless steel, and the thickness of the rectangular parallelepiped side wall is made as small as possible economically so that the cross-sectional area of the side wall is reduced. Within the range where the cross-sectional area of the column joined adjacent to the cuboid is secured, that is, within the range where the moment of inertia of the column is secured, a plurality of slit-shaped horizontal walls are formed on the side wall. A cylindrical space is formed in the upper and lower portions of the rectangular parallelepiped, through which a through hole is made, and which penetrates vertically through the vertical center axis of the rectangular parallelepiped, and a minimum cross-sectional width of a solid portion of an upper end surface or a lower end surface of the rectangular parallelepiped If each of them is 25% or more of the beam flange width, the solid volume of the rectangular parallelepiped can be minimized and the weight can be reduced. The method according to claim 1 is applied to the rectangular parallelepiped having the minimum solid part volume. That is, the height of the solid rectangular parallelepiped made of steel is made equal to the height of the beam joined to the rectangular parallelepiped, and the outer dimensions of the upper end and the lower end of the rectangular parallelepiped are made equal to the outer dimensions of the columns joined to the rectangular parallelepiped. A method of manufacturing a steel structure by welding and joining the beam and the side surface of the rectangular parallelepiped and the column to the vertical end surface of the rectangular parallelepiped so that the welded portion of the beam and the column joined to the rectangular parallelepiped is integrated. .

Therefore, in the invention according to claim 4, the first configuration of the invention is characterized in that a space penetrating vertically in the vertical center axis of a rectangular parallelepiped manufactured by a structure is provided, and a solid upper end surface or a lower end surface of the rectangular parallelepiped is provided. The minimum width of the partial cross section is to be 25% or more of the beam flange width or 25% or more of one side of the rectangular parallelepiped, respectively. Providing a penetrating space, and manufacturing the rectangular parallelepiped so that the second moment of area of the intermediate portion of the rectangular parallelepiped is equal to or more than the second moment of cross section of the upper column or the lower column joined to the rectangular parallelepiped; In the configuration of 3, the vertical length of the rectangular parallelepiped is made equal to that of the beam to be joined to the rectangular parallelepiped, and the outer dimensions of the upper end and the lower end of the rectangular parallelepiped are equal to the outer dimensions of the column to be joined to the rectangular parallelepiped. Equally, welding of beam and column to be joined to the rectangular parallelepiped According to the present invention, the beam and the side surface of the rectangular parallelepiped and the column and the upper and lower ends of the rectangular parallelepiped are welded to each other to form a steel structure. Is the way. The novelty of the present invention is not only the novelty of claims 1 and 2, but also A space penetrating in the horizontal direction is provided on the side surface of the body, and the rectangular solid is formed so that the second moment of area of the middle part of the rectangular parallelepiped becomes equal to or larger than the sectional moment of the upper column or lower pillar joined to the rectangular solid. It is to produce.

That is, the present invention (the invention according to claim 4) is the invention according to claim 1, wherein a space penetrating in the vertical direction is provided on the vertical center axis of the rectangular parallelepiped manufactured by the structure, and The minimum width of the solid cross section of the end face or the lower end face shall be 25% or more of the beam flange width or 25% or more of one side of the rectangular parallelepiped, respectively, and shall be horizontally penetrated into the side face of the rectangular parallelepiped. A space is provided, and the rectangular parallelepiped is manufactured so that the cross-sectional second moment of the intermediate portion of the rectangular parallelepiped is equal to or larger than the cross-sectional secondary moment of the upper column or the lower column that is joined to the rectangular parallelepiped. A method for integrating a column-beam joint of a steel structure, wherein the column and the vertical end face of the rectangular parallelepiped are welded to each other so that welding is integrated.

Next, the invention according to claim 5 will be described.

Conventionally, in assembling building steel frames, columns with short beams, called brackets, are inefficient because they are overhanged by the brackets and transported from the factory to the site. The problem is that it requires more man-hours and costs than welding. To solve this problem, a short beam or bracket is not attached to the rectangular parallelepiped, but the rectangular parallelepiped and the column are welded in a factory to produce a column / rectangular structure, and the column rectangular parallelepiped structure is mounted in the factory. If it is conveyed to a construction site, it is erected, and the rectangular parallelepipeds of the columnar cuboid structure are welded to each other with a single beam, so that port bonding between the beams can be omitted at the construction site. However, it is difficult to temporarily assemble the rectangular parallelepiped and the beam of the columnar rectangular parallelepiped structure as they are.

Therefore, as a result of various studies, the inventions according to claims 1, 2, 3, and 4 have been carried out in order to further improve the production efficiency compared to the conventional construction method. Column and beam structure by welding and joining a rectangular parallelepiped and a column A small plate having a hole for port fastening for temporarily assembling a beam is attached to the side surface of the rectangular parallelepiped of the columnar rectangular structure by welding, and then the rectangular parallelepiped structure with the small plate is attached. To the construction site and erect it, and then temporarily attach the H-shaped steel beam of the beam to a small plate with bolts, etc. to temporarily assemble the columnar cuboid structure and the beam, and finally weld the cuboid and the beam Invented to join.

According to the invention according to claim 5, a first configuration of the invention is to attach a small plate having a hole for bolting to a side surface of a rectangular parallelepiped by welding, and a second configuration is configured by claims 1, 2, and 3. , Or 4 is to weld and join the integrated rectangular parallelepiped and the column, and a third configuration is to temporarily fix the small plate and the beam web with a bolt thereafter. The method according to the above, wherein the rectangular parallelepiped and the beam are welded to each other to produce a steel structure. The novelty of the present invention is that, in addition to the novelty of claims 1, 2, 3, or 4, a column rectangular parallelepiped structure of an integrated rectangular parallelepiped and a column is manufactured before beam attachment, and the It is to manufacture a steel frame structure by connecting a columnar cuboid structure and a beam at a construction site via a small plate having holes. .

That is, in the present invention (the invention according to claim 5), according to the invention described in claim 1, 2, 3, or 4, a small plate having a hole for bolting is attached to a side surface of a rectangular parallelepiped by welding. After welding the rectangular parallelepiped and the column, in the steel frame assembly, the small plate and the beam are temporarily fixed by a port, and the rectangular parallelepiped and the beam are welded and joined, wherein the column and the beam are joined. It is an integrated construction method. Next, the invention according to claim 6 will be described.

In the method of the invention described in claim 1, 2, 3, 4, or 5, the external shapes of the rectangular parallelepiped and the column are all rectangular. However, in these inventions, the outer shapes of the rectangular parallelepiped and the column are not limited to the square. When the rectangular parallelepiped is a quadrangle, the column can be applied to a cylinder or an H-shaped steel. On the other hand, when the rectangular parallelepiped is changed to a cylindrical shape, the present invention can also be applied to a column having a cylindrical shape or an H-shaped steel. In these cases, the effect of the invention is that the rectangular parallelepiped and the column are rectangular steel pipes. Is the same as Further, the shape of the beam end is also processed according to the shape of the side surface of the rectangular parallelepiped, so that the joint can be easily welded to the rectangular parallelepiped. Also, integrated welding of columns and beams can be easily performed in the same manner.

As described above, according to the present invention, the conventional siko mouth made of welded steel, which has been complicated and requires a lot of man-hours, is integrated with rolled steel, forged steel, or steel, and the shiko mouth, which is the connection point of the column and beam, is simplified. As a result, the amount of welding work was reduced by half, and the effects of reducing welding residual stress and distortion, reducing the number of manufacturing steps, reducing the management work involved in manufacturing, and improving manufacturing accuracy were greatly recognized. In the past, separate welding was performed while the welds between the column and the dice and between the beam and the dice were close to each other. However, in the present invention, the welds of the column and the beam joints are integrated to integrate the respective welds. Prevents embrittlement due to overlap of the weld heat affected zone between the welds, reduces dice size by reducing dice size, reduces manufacturing man-hours, and can be used for beam-to-column joints with different beams or columns. Now it can be easily applied.

Each of the inventions according to claims 1 to 4 maximizes the effects of the above invention depending on the size of the psycho-mouth opening and the form of the material. When assembling, the above effects are maximized by using integrated dice and integrated welding. '' Brief description of the drawings

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

Fig. 2 is a cross-sectional view showing a conventional square steel pipe-diaphragm joint of a building steel column-beam joint.

FIG. 3 is a cross-sectional view showing a state in which a water-cooled or water-cooled copper metal plate is applied to the end of the member, and a build-up welding is performed.

FIG. 4 is a cross-sectional view showing a state in which a copper pad with a water-cooled or water-cooled projection is applied to the end of the member, and overlay welding is performed.

Fig. 5 shows the case where the build-up welding is performed on the end of the member, and the end of the member and the build-up weld are both opened. It is sectional drawing which shows the state which pre-processed.

FIG. 6 is a cross-sectional view showing a state in which overlay welding and beveling have been performed on the ends of the member, the mating member has been applied, and joint welding has been performed.

FIG. 7 is a diagram showing a dice having two reinforcing plates attached and a through hole provided in the center axis.

FIG. 8 is a perspective view showing a state where a beam and a column are joined to a solid psycho mouth. FIG. 9 is a perspective view showing a state where a beam and a column are joined to a solid dice. FIG. It is sectional drawing which shows the state which joined the beam and the column to the dice.

FIG. 11 is a cross-sectional view showing a state in which a low-height beam is joined to a solid die.

FIG. 12 is a perspective view showing a state in which beams and columns are joined to a solid die provided with a cylindrical space penetrating in the vertical direction.

FIG. 13 is a cross-sectional view showing a state in which beams and columns are joined to a solid die provided with a cylindrical space penetrating in the vertical direction.

FIG. 14 is a perspective view showing a solid psycho opening cut out of a thick rolled steel plate.

Fig. 15 is a perspective view showing a solid psychoportion cut out from a rolled bar. Fig. 16 is a perspective view showing a beam and a column joined to a psychoportion where the upper and lower middle portions of a solid rectangular parallelepiped are narrowed. It is.

FIG. 17 is a cross-sectional view showing a state in which a beam and a pillar are joined to a psychoportion in which the upper and lower middle portions of a solid rectangular parallelepiped are made thinner.

Figure 18 is a cross-sectional view of a case where pillars and beams are welded and joined to a psycho-port integrated with a rolled steel plate, forged steel or steel, leaving the end material. Fig. 19 is a cross-sectional view of a case in which a column and a beam are subjected to conventional welding with a conventional backing metal on a die integrated with a rolled steel plate, forged steel or steel, and the welded portion is integrated.

Figure 20 shows a column and a beam welded to a rolled steel plate, a forged steel or a steel die, and if there is a gap between the outer surface of the die and the beam or the column surface, the joint weld is integrated. FIG. 4 is a cross-sectional view of the case where the structure is formed.

FIG. 21 is a cross-sectional view of a case in which a column and a beam subjected to backfacing welding are welded to a die integrated with a rolled steel plate, a forged steel or a steel plate, and a joint welded portion is integrated.

Figure 22 shows a welded column and beam with backfacing welded to a rolled steel plate, forged steel or steel rolled dice, and there is a gap between the outer surface of the psycho opening and the beam or column surface FIG. 4 is a cross-sectional view of a case where a joint weld is integrated.

FIG. 23 is a plan view showing the relationship between the solid width and the beam width in the case where a through hole is formed in the center of the integrated psychoportion along the axis thereof and the beam is welded and joined. FIG. 24 is a diagram illustrating an example of a siko mouth made of steel with a space left in the center and side surfaces of the shiko mouth.

Figure 25 is an external view of a side plate of the integrated psychoportion with a small plate with holes for bolts attached.

FIG. 26 is a perspective view showing a state in which an integrated die attached with a small plate and a column are welded at a factory to produce a columnar cuboid structure.

Figure 27 is an external view of a steel frame structure constructed by joining a rectangular parallelepiped structure and a beam at a construction site by omitting Porto joining.

FIG. 28 is a perspective view of a bolt-joined state in which H-shaped steel beams are joined to each other. FIG. 29 is a sectional view of a connection portion in a state where a welded portion of a column and a beam is welded and joined to a solid integrated die.

Figure 30 shows a solid dice with a cylindrical space penetrating in the vertical direction. FIG. 4 is a sectional view of a connection part in a state where a weld and a beam are welded and joined together.

Fig. 31 is a sectional view of a joint in a state in which a column and a beam are welded to a solid integrated die having a narrowed intermediate portion, and a welded portion is integrated and welded.

Figure 32 is a cross-sectional view of a joint in a state where pillars and beams are welded to an integrated psycho-opening made of steel with a space in the center and sides, and welded parts are integrated.

Fig. 33 shows that a temporary assembly plate is attached to the side surface of a rectangular parallelepiped with a cylindrical space penetrating in the vertical direction, and a column is welded to the rectangular parallelepiped. Then, a beam is welded and joined to the rectangular parallelepiped. It is a connection part sectional view in the state where a welding part was integrated.

FIG. 34 is a cross-sectional view of the joint in a state in which the dice having the umbrella broken diaphragm and the beam flange are misaligned.

Figure 35 is a perspective view of a cylindrical (cylindrical) dice with a beam welded to it. BEST MODE FOR CARRYING OUT THE INVENTION

[Example 1]

An embodiment of the invention according to claim 1 will be described.

FIG. 8 is a perspective view of a state in which a beam 4 and a column 5 are welded to a solid cuboid 23 made of steel by welding 25 and 21, respectively. Height 23 A is equal to the height 4 A of the beam joined to the rectangular parallelepiped 23, and the outer dimensions 23 3 B of the upper end and lower end of the rectangular parallelepiped 23 are joined to the pillar 5 to be coupled to the rectangular solid 23. As shown in Fig. 19 or Fig. 21, as shown in Fig. 19 or Fig. 21, the joints 24 and 25 of the column 5 and the beam 4 to be joined to the rectangular parallelepiped 23 are integrated so that they are integrated. In this method, a beam 4 and the side surface of the rectangular parallelepiped and a column 5 and an end surface of the rectangular parallelepiped are welded to each other to produce a steel structure.

[Example 2] Another example of the embodiment of the invention according to claim 1 will be described.

Figures 9 and 10 show solid cuboids 23 manufactured by hot working or machining of rolled steel, or solid cuboids 23 manufactured by forging, or solids manufactured by mirroring. H-shaped steel beam flange 4 is welded to a rectangular parallelepiped 23 by a conventional method with a backing metal 25, and then a column 5 that is superimposed on the weld 25 and a rectangular steel pipe is cut is welded 24. Are shown in a perspective view and a sectional view, respectively. FIG. 19 shows the overlapping state of the welding 24 of the column 5 and the welding 25 of the beam flange 4, that is, the integrated state of the welded portions. As can be seen from Fig. 19, the weld heat affected zone of the column 5 and the weld heat affected zone of the beam 4 do not overlap on the outer surface of the psycho-port (cuboid) 23. As shown in Fig. 21, such a construction method is performed by overlay welding 14 on the back surface of the end of column 5 or overlay welding 14 on the back surface and side surface of the flange end of beam 4 and then joint welding, respectively. It is also applicable when doing 24 and 25. FIG. 29 is a cross-sectional view showing a state where the work according to the present invention is performed after the overlay welding is performed on the back surface of the column and the end of the beam.

[Example 3]

As an example of the embodiment of the invention according to claim 1, FIG. 11 is a cross-sectional view in which a beam 3A having a small height and a beam 3A having a small height are joined to a solid psycho-opening. As can be seen from Fig. 11, the low beam 3A can be welded to any height of the dice without any problem on the strength of the dice, so that the degree of freedom in the design and application of the building steel frame increases.

[Example 4]

As another example of the embodiment of the invention according to claim 1, a column and a beam are welded to a rolled steel, a forged steel, or a copper die, and a gap between the outer surface of the die and the beam or the column surface is formed. In some cases, as shown in Fig. 20 and Fig. 22, in the case of beam connection, the deviation a, ie, 31 is less than 25% + 7 mm of the thickness of the beam flange, and in the case of column connection, the deviation b That is, 31 A is 25% of the column thickness + 7 mm or less is desirable. If the deviations a and b exceed these values, the welded portion becomes too large due to the integration of the welded portion, resulting in an increase in welding residual stress, an increase in the amount of welding, and an increase in manufacturing cost. Therefore, the vertical total length 23 A of the rectangular parallelepiped port shown in Fig. 8 is obtained by adding 50% of the flange plate thickness + 14 mm to the height 3 A of the beam 3 joined to the rectangular parallelepiped 23. Less than the length is desirable. In addition, the outer dimensions of the upper and lower ends of the rectangular parallelepiped die, that is, the length 23 B of the side of the die, is the length obtained by adding 50% of the column plate thickness + 14 mm to the length 5 A of the column side. The following is desirable. As described above, if the columns and beams have the predetermined dimensions, the length of the horizontal and vertical sides of the rectangular parallelepiped can be minimized by integrating the welded portions, thereby reducing the manufacturing cost of the rectangular parallelepiped and reducing the steel frame. Ease of fabrication of the structure is increased.

[Example 5]

Further, as another example of the embodiment of the invention according to claim 1, as a method of extracting a solid rectangular parallelepiped from rolled steel, gas cutting and laser cutting from a thick rolled steel sheet shown in FIG. Saw cutting is possible. In addition, as shown in Fig. 15, a solid rectangular parallelepiped can also be obtained by manufacturing a long rod or band by rolling and cutting it by gas cutting, laser cutting, saw cutting, etc. according to cutting line 28. Can be In this way, cuboid dice can be easily and inexpensively obtained from rolled steel by mass production.

[Example 6]

Further, as an embodiment of the invention according to claim 1, the rectangular parallelepiped is obtained from forged steel formed into a predetermined shape by forging a rectangular parallelepiped taken from rolled steel.

[Example 7]

An embodiment of the invention according to claim 2 will be described.

FIG. 12 is a perspective view showing a state in which the beam 3 and the column 5 are joined to a solid die 23 provided with a cylindrical space 26 penetrating in the vertical direction at the center axis position. Figure 1 In 2, the dice 23 shall be a solid cuboid manufactured by hot working or machining of rolled steel, a solid cuboid manufactured by forging, or a solid cuboid manufactured by forging, The vertical overall length 23 A of the rectangular parallelepiped is made equal to the height 4 A of the beam to be joined to the rectangular parallelepiped, and the outer dimensions of the upper end and the lower end of the rectangular parallelepiped 23, that is, the side length 23 B is defined as the rectangular parallelepiped. A cylindrical space 26 penetrating in the vertical direction is provided on the vertical center axis of the rectangular parallelepiped 23, having the same external dimensions as the column 5, that is, the length of the side 5A. As shown in Fig. 3, the minimum widths c and d of the solid section at the upper end face or the lower end face of the rectangular parallelepiped 23 are respectively 25% or more of the beam flange width e, that is, c ≥ 0.25 e, d ≥ As shown in FIGS. 19 and 20, the weld between the beam flange 4 and the column 5 joined to the rectangular parallelepiped 23 is set to 0.25 e. In this method, the beam flange 4 and the side surface of the rectangular parallelepiped and the column 5 and the upper and lower ends of the rectangular parallelepiped are welded to each other so as to form a steel structure shown in FIG. Similarly, as shown in Figs. 21 and 22, when the weld is welded to the back of the column end and when the weld is welded to the back and side of the end of the beam flange, the beam joined to the rectangular parallelepiped 23 is formed. This is a method of manufacturing a steel structure shown in FIG. 30 by making the welded portions of a beam and a column overlap, and welding and joining the beam and the side surface of the rectangular parallelepiped, and the column and the upper and lower ends of the rectangular parallelepiped [Eighth Embodiment]

Another example of the embodiment of the invention according to claim 2 will be described. In the space vertically penetrating in FIG. 13, the columnar shape can be not only circular but also elliptical or polygonal. Further, the volume and weight of the dice can be further reduced by making the pillar-shaped one into a medium bulge. It is self-evident that these columnar spaces can be used to fill concrete and other columns.

[Example 9]

An embodiment of the invention according to claim 3 will be described.

FIGS. 16 and 17 respectively show the middle part 3 in the vertical direction of the solid rectangular solid 23. A perspective view and a cross-sectional view of a state where a beam 3 and a column 5 are welded and joined using a backing metal 10 to a solid die 23 in which 0 is thinner than the upper and lower portions are shown. In the method according to the present invention, in FIGS. 16 and 17, the dice 23 are solid cuboids manufactured by hot working or machining of rolled steel, or solid cuboids manufactured by forging, Or, it is a solid cuboid manufactured by construction, and the total length 23 A in the vertical direction of the cuboid 23 is made equal to the height 4 A of the beam to be joined to the cuboid 23, and the cuboid 23 is formed. The outer dimension of the upper end and the lower end, that is, the length of the side 23 B, is equal to the outer dimension of the column 5 that joins the rectangular parallelepiped 23, that is, the length of the side 5 A, and the vertical middle part 3 of the solid rectangular parallelepiped 23 0 is made thinner than the upper and lower parts so that the second moment of area of the intermediate part 30 is greater than or equal to the second moment of cross section of the upper column 5 or the lower column 5 joined to the solid rectangular solid 23. Further, as shown in FIG. 19 or FIG. 20, the beam flange 4 and the column 5 to be joined to the rectangular parallelepiped 23 are melted. Parts are integrated so that overlap each other to produce a steel structure product. Similarly, as shown in FIG. 31, the method according to the present invention also applies to the case where the build-up welding 14 is performed on the back surface of the column end and the case where the build-up welding 14 is performed on the back surface and the side surface of the beam flange end 4. Can be applied. As described above, in the case of overlay welding, since the cross-sectional area of the weld increases, there is an advantage that the strength of the integrated weld is further improved. If the beam flange 4 is attached to the dice 23 by welding, regardless of the presence or absence of overlay on the back and side surfaces of the beam flange 4, the web 9 is welded to the rectangular parallelepiped 23 before welding 25. Porto joining facilitates beam-column assembly.

[Example 10]

An embodiment of the invention according to claim 4 will be described.

Fig. 24 shows an example of a die made of steel with a space between the upper and lower centers and side surfaces of a steel die (cuboid) 36. In FIG. 24, a space 26 penetrating in the vertical direction is provided in the vertical center axis of the rectangular parallelepiped 36 manufactured by the structure, and as shown in FIG. 23, the upper end face or the lower end of the rectangular parallelepiped 23 is formed. The solid part cross-section minimum width c or d of the surface was more than 25 ° / ₀ of the beam flange width e to be joined, respectively, and penetrated horizontally into the side surface of the rectangular parallelepiped 36 in FIG. 24. A space 37A is provided, and the rectangular parallelepiped 36 is manufactured so that the cross-sectional secondary moment of the rectangular parallelepiped intermediate portion 37 is equal to or larger than the cross-sectional secondary moment of the upper or lower pillar joining the rectangular parallelepiped 36. The vertical length of the rectangular parallelepiped 36 is made equal to the height of the beam joined to the rectangular parallelepiped, and the outer dimensions of the upper and lower ends of the rectangular parallelepiped, that is, the lengths of the horizontal sides, are joined to the rectangular parallelepiped. And the welded portion of the beam flange 4 and the column 5 to be joined to the rectangular parallelepiped 23 are overlapped and integrated as shown in Fig. 19 and Fig. 20. According to the present invention, the beam flange 4 and the side surfaces of the rectangular parallelepiped 36 have the above configurations, and tt 5 and the rectangular upper and lower ends is engaged welding contact is a method of fabricating a steel structure. Similarly, as shown in FIG. 32, the method according to the present invention is also applicable to the case where the build-up welding 14 is performed on the back surface of the column end and the case where the build-up welding 14 is performed on the back surface and the side surface of the end portion 4 of the beam flange. Applicable. In Figure 32, when welding the beam flange 4 to the dice 23, regardless of the presence or absence of overlaying on the back and side surfaces of the beam flange 4, the web 9 is laid in a rectangular parallelepiped 2 before welding 25 is performed. Welding or bolting with 3 or 36 facilitates beam-column assembly.

[Example 11]

An embodiment of the invention according to claim 5 will be described.

At the factory, as shown in Fig. 25, first, a small plate 38 having a bolt fastening hole 39 for temporarily assembling the beam is attached to the rectangular parallelepiped 23 by welding, and as shown in Fig. 26, The integrated rectangular parallelepiped 23 according to the present invention and the column 5 are welded and joined 24 to produce a column rectangular parallelepiped structure 44, and the column rectangular parallelepiped structure 44 with the small plates 38 is transported to a construction site. After standing upright as shown in Fig. 7, the beam H-shaped steel web 9 of the beam is temporarily fixed to the small plate 38 with bolts 40 etc. as shown in Fig. 33. A temporary assembly of beam 3 was performed, and finally a rectangular parallelepiped 2 3 Beam 3 is welded, and a steel structure is installed as shown in Figure 27. Either the step of attaching the small plate 38 having the bolt holes 39 to the side surface of the rectangular parallelepiped 23 by welding or the step of welding and joining the rectangular parallelepiped 23 to the column 5 may be performed first.

[Example 12]

An embodiment of the invention according to claim 6 will be described.

FIG. 35 shows, as an example, a case where the integrated dice 23 is formed in a columnar shape and a columnar space 26 is provided in the vertical central axis direction. The welds between the beam flange 4 and the integrated dice 23 are integrated as shown in FIGS. 19, 20, 21 or 22. Industrial applicability

As described above, the method of integrating a beam-column joint of a steel structure according to the present invention can be widely applied to the manufacture of a building steel structure.

Claims

The scope of the claims

1. In a building steel structure, the height of the solid rectangular parallelepiped made of steel is made equal to the height of the beam to be joined to the rectangular parallelepiped, and the outer dimensions of the upper and lower ends of the rectangular parallelepiped are the outer dimensions of the columns to be joined to the rectangular parallelepiped. The beam is welded to the side of the rectangular parallelepiped and the column and the vertical end face of the rectangular parallelepiped so that the welded portion of the beam and the column to be joined to the rectangular parallelepiped are integrated so as to have the same dimensions, thereby producing a steel structure. how to

2. In the invention according to claim 1, a space that penetrates in the vertical direction along the vertical center axis of the rectangular parallelepiped is provided in the rectangular parallelepiped, and a minimum width of a solid part cross-section of an upper end surface or a lower end surface of the rectangular parallelepiped is respectively set. A method of manufacturing a steel structure so that it is at least 25% of the beam flange width or at least 25% of one side of the rectangular parallelepiped.

3. In the invention according to claim 1, a cross section of an upper column or a lower column that has a vertical intermediate portion of the solid rectangular parallelepiped thinner than the upper and lower portions and a cross section of the intermediate portion that joins a second moment to the solid rectangular parallelepiped. A method for manufacturing a steel structure, wherein the rectangular parallelepiped is manufactured so as to have a second moment or more.

4. The invention according to claim 1, wherein a space is provided in the vertical center axis of the rectangular parallelepiped manufactured by the structure so as to penetrate vertically and vertically, and a minimum width of a solid part cross section of an upper end face or a lower end face of the rectangular parallelepiped is provided. Is not less than 25% of the beam flange width or not less than 25% of one side of the rectangular parallelepiped, and a space penetrating in the horizontal direction is provided on the side surface of the rectangular parallelepiped. The rectangular parallelepiped is manufactured so that the cross section of the upper column or the lower column connecting the secondary moment to the rectangular parallelepiped is equal to or more than the secondary moment, and the beam, the rectangular parallelepiped side surface and the column, and the rectangular parallelepiped vertical end surface are formed. Is a method of manufacturing a steel frame structure by welding and joining them so that the welds are integrated.

5. In the invention as set forth in claim 1, 2, 3 or 4, After attaching a small plate having holes to the side surface of the rectangular parallelepiped by welding and welding and joining the rectangular parallelepiped and the column, in the steel frame assembly, the small plate and the beam are temporarily fixed with a port, and the rectangular parallelepiped and the beam are welded. A method of manufacturing a steel structure by joining.

6. In the invention described in claim 1, 2, 3, 4, or 5, a steel structure is manufactured in which the rectangular parallelepiped is a square or a cylinder, and the column is a square, a cylinder, or an H-shaped steel. Method.