Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
  • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
  • E04B1/2403—Connection details of the elongated load-supporting parts
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
  • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
  • E04B1/2403—Connection details of the elongated load-supporting parts
  • E04B2001/2445—Load-supporting elements with reinforcement at the connection point other than the connector
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
  • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
  • E04B1/2403—Connection details of the elongated load-supporting parts
  • E04B2001/2454—Connections between open and closed section profiles

Definitions

• the present invention relates to a method of directly connecting a beam and a weir diaphragm by groove welding at a beam-to-column joint of a building steel structure.
• the joint is welded 6 by applying a thin steel plate diaphragm 1 and a short square steel pipe 2 as shown in FIG.
• the die and the H-shaped steel flange 4 are joined by welding 7 and the die and the square steel pipe column 5 are joined by welding.
• the die 6 is welded with the square steel pipe 2 and the diaphragm 1 6 and the die 1 is welded with the diaphragm 1 and H-shaped steel flange 4.
• a non-consumable copper plating 12 is applied to the back surface of the end of the welded joint member 13 for overlay welding 14 and then a groove is formed.
• the beveling process is carried out including the buildup portion 14 at a position of 13 C to obtain a groove 15 including the member 13 and the buildup portion 14 as shown in FIG. 5 as shown in FIG.
• the joint welding 17 is performed by the one-side welding method in which the members 16 and 13 are welded on one side, without using a consumable back metal or backing material, and the plate thickness of the member of the welded joint member exceeds 18 There is a way of technology to gain 19 thick.
• a thin steel plate 28 with a thickness of about 3 mm is applied to the back surface of the end of the welded joint member 13 and welding 14 is performed. After that, only the end of the member 13 is grooved at the position of 13C, and the groove 15 including the member 13 and the build-up portion 14 is obtained as shown in FIG. As you can see, the consumable backing metal and backing material There is a method of technology that performs joint welding 17 by one side welding method in which members 16 and 13 are welded from one side without using, and obtains a throat thickness 19 exceeding 18 thickness of members at the end of the welded joint member.
• a method may be used in which the 4 inner diaphragm is attached to the inner surface side of the square steel pipe column 5 at the same height as the H-shaped steel beam flange.
• a bolt through hole is formed in a square steel pipe column, and an inner diaphragm is attached to the inside of the H steel structure connection, and a female screw is processed on the inner diaphragm.
• a method of joining the inner diaphragm and the beam is characterized by inserting a high strength bolt into the female screw through the bolt hole of the end plate attached to the beam end and tightening the nut on the end plate side to fixate the beam. It is disclosed.
• Patent Document 1 Japanese Patent Application No. 2000- 202582
• Patent Document 2 Japanese Patent Application 2002- 061326
• Patent Document 3 Japanese Patent Application No. 06-331303
• the weld heat affected zone tends to be brittle, and conventionally, when two welds are close to each other, the heat affected zones by both welds overlap and the brittleness is not further promoted.
• FIG. 2 when the weld portion 6 between the column 5 and the diaphragm 1 is close to the weld portion 7 between the beam 4 and the diaphragm 1 and a common welding heat affected zone formed between the welds is formed on the outer surface.
• the heat-affected zone is more fragile than a single heat-affected zone. Due to such a phenomenon, the problem of brittle fracture strength 'fatigue strength and plastic deformation performance of the beam-to-column joint arises.
• a beamed column has a length of about 1 meter, but it may extend in two or four directions perpendicular to the column but at a construction site where the efficiency of transporting the factory power is also poor. There is a problem that it takes more time and money to weld using multiple bolts between beams.
• the inner diaphragm 1 at a position away from the end of the square steel pipe column is welded to the inner surface of the square steel pipe without visible inside.
• it becomes difficult to weld the inner surface and it is difficult to align the height position with the H-shaped steel beam flange on the outer side of square steel pipe column 5 beam flange force.
• the strength of the joint tends to decrease.
• this inner diaphragm method in order to weld the inner diaphragm to the inner surface of the square steel pipe, it is necessary to cut the square steel pipe in the vicinity of the inner diaphragm. In addition, the subsequent butt welding by cutting is required, and the number of man-hours will be large.
• the present invention prevents thermal strain 'heat strain embrittlement of beam-to-column joint of building steel structure and prevents' scalloping' ⁇ Simplifies and saves labor of weld groove machining and relieves stress concentration, and the connection
• the objective is to improve the strength and plastic deformation performance of the part and to install diaphragms that can be used to cut the columns on each floor, thereby reducing the cost of manufacturing the columns.
• the cross section of the beam flange having a cross section corresponding to the cross section of the beam flange is connected to the beam flange mounting position of the square steel pipe without cutting the square steel pipe column for each floor.
• a second configuration of the invention is to install an inner diaphragm inside the square steel pipe at the position of the through hole and perform groove welding from the outer surface of the square steel pipe column, and the square steel pipe column and the inner diaphragm
• the third configuration of the invention is to weld and join a square steel pipe column including the groove weld and a H-shaped steel beam after groove welding.
• the novelty of the present invention is groove-welding a square steel pipe column and an inner diaphragm, and welding and joining a square steel pipe column and an H-shaped steel beam including the groove welding, the inner diaphragm and the square steel pipe column and a beam flange. Is to weld together the welds in the multi-layer welding.
• the method for producing a steel frame structure according to the second aspect comprises stiffeners above and below the thickness of the beam web.
• the third structure is to insert the welded inner diaphragm and the stiffener into the end opening of the square steel pipe column and place it in a predetermined position.
• a fourth configuration is to groove weld the stiffener and the square steel pipe column
• a fifth configuration is to weld and connect the groove weld and the beam web.
• the novelty of the present invention is that, in addition to the novelty of claim 1, a stiffener is provided on the beam web extension by welding between upper and lower diffusers, and further, the stiffener is welded to a square steel pipe column and groove. Also, the end opening force of the square steel tubular column is also inserted into the column and installed at a predetermined position.
• the beam flange end joint welding is performed in addition to the configuration according to claim 1, 2 or 3, in the method for manufacturing a steel frame structure. It is connected to the part and welded on the side, top or bottom of the flange.
• the novelty of the present invention is to weld on the side, top or back of the flange.
• the diaphragm does not extend beyond the outer diameter of the column, it is good for manufacturing the building outer wall where there is no so-called umbrella breakage phenomenon, and for the overhang of the diaphragm. There is an effect that the indoor space of the building increases.
• the moment applied to the beam can be applied not only to the beam flange but also to the beam web, thereby increasing the safety of the beam-to-beam joint and reducing the beam length. It has the effect of being able to
• the inner diaphragm and the stiffener are welded together in advance, so that the inner diaphragm can be easily installed at a predetermined position in the square steel pipe.
• the inner diaphragm joint end surface or the back surface of the joint end portion of the H-shaped steel beam is welded in advance by welding.
• the strength of the beam-to-column connection can be significantly improved.
• stress concentration on the side surface of the beam end can be reduced by taking advantage of the effects of the first, second or third aspect.
• Column member end Even if the beam member end or the diaphragm member end is reinforced by build-up welding, the failure occurrence location of the beam-to-column joint often becomes the beam end. In order to improve such a situation, it is necessary to reinforce the beam end with side, top and back forces, and this method has the advantage of further improving the strength of the beam-to-column connection.
• FIG. 8 shows a state in which the through hole 27 is opened on the side surface of the square steel pipe according to the beam flange shape without cutting and separating the square steel pipe pillar 5 at the beam-to-column joint.
• 12 shows the inner diaphragm 1A and the square steel pipe 5 in the through hole 27.
• a groove welding 22 is performed, and further, a beam flange 4 is overlapped on the groove welding portion 22 and welding 17 is performed, and a cross-sectional view in which the beam web 9 is welded to the square steel pipe column 5 is shown.
• FIG. 13 is a top view of FIG.
• the square steel pipe column 5 is a cross-section of the beam flange at the beam flange mounting position of the square steel pipe 5 by passing through two to four floors of cutting the column every floor of the building.
• a square steel pipe is formed by welding the outer diaphragm 1 A of the square steel pipe column 5 to the inside of the square steel pipe column 5 by performing an external force and groove welding 22 of the square steel pipe column 5 by opening a corresponding through hole.
• a method of manufacturing a steel frame structure by welding and joining together the column 5 and the inner diaphragm 1A by welding, and then welding together the square steel pipe column 5 including the groove weld 22 and the H-shaped steel beam flange 4 It shows.
• welds 17 are welded using backing metal 10 and temporary attachment 8.
• the shape of the inner diaphragm may be a snap cut so that the corner of the square is cut out to match the shape of the inner surface of the square steel pipe column. Its thickness is usually about 5-15 mm larger than the beam flange.
• a through hole 24 is provided at the center of the inner diaphragm 1A, which is useful for inserting the inner diaphragm into the inside of the square steel pipe column 5.
• groove welding 22 is usually performed on the four sides of the side surface of square steel pipe column 5 in order to receive stress that exerts force even if the beam has only one direction.
• the stiffener 25 having a thickness equal to or greater than the thickness of the beam web 9 is extended to the upper and lower diaphragms 1A.
• a method of manufacturing a steel frame structure is characterized in that groove welding 5 W is performed, and further, the beam web 9 is fillet welded to the groove welding portion 5 W.
• Groove welding 5 W between the stiffener 25 and the square steel pipe column 5 performs groove welding not only on the beam attachment side but also on the other side of the column 5 without beams.
• the fillet weld 23 can also be performed by butt welding.
• the stiffener 25 is attached only to the extension of the web of one of the beams even when the beams are joined to the square steel pipe column in the perpendicular direction.
• FIG. 14 a through hole corresponding to the beam flange cross-sectional shape is opened at the beam flange mounting position of the square steel pipe 5 so that the square steel pipe column 5 is not cut for each floor of the building.
• a method of manufacturing a steel frame structure by welding 17 a square steel pipe column 5 including the part 22 and the H-shaped steel beam 4 by welding 17 is shown.
• Welded part 17 is welded using overlay welding 14 and temporary attachment 8.
• the shape of the inner diaphragm may be a snap cut so that the corner of the quadrilateral is cut out to match the shape of the inner surface of the force square steel pipe column 5.
• the thickness of the inner diaphragm 1A can be reduced by about 10 to 20 mm as compared with the case where the end portions are not welded.
• backing metal 10 is formed on both sides of the end of inner diaphragm 1A.
• the method of attaching by temporary attachment 8 is also a good method for stably performing groove welding between the inner diaphragm 1A and the square steel pipe 5, and is one of the application examples of the present invention.
• the groove welding 22 can be stably performed without increasing the thickness of the inner diaphragm, as compared with the case where the backing metal 10 is not attached.
• a method of attaching the same backing metal 10 to the groove weld side of the stiffener 1 of Fig. 17 and attaching it to the end of the stiffener 1 by tack welding 8 is also one of the application examples of the present invention, if necessary. .
• FIG. 20 After the beam flange end joint welding 7 or 17 according to the invention of claim 1, 2 or 3, it is connected to the beam flange end joint weld and is elongated in the axial direction of the beam on the upper surface of the flange
• We will show how to make a steel frame structure by overlay welding 20. It is appropriate for the buildup dimensions to be 10 to 30 mm wide, 20 to 200 mm long, and 3 to 10 mm high. In order to reduce stress concentration, it is desirable to gently finish and taper the weld end on the center side of the beam.
• FIG. 21 After the beam flange end joint welding 7 or 17 according to the invention of claim 1, 2 or 3, the beam flange end joint is connected to the weld portion and the upper surface of the flange is wide in the axial direction of the beam.
• a beam flange width, a length of 20 to 200 mm and a height of 3 to 10 mm are appropriate.
• FIG. 22 After the beam flange end joint welding 7 or 17 according to the invention of claim 1, 2 or 3, it is connected to the beam flange end joint weld and the upper surface of the flange is wide in the axial direction of the beam, the method of manufacturing a steel frame structure by long-time welding on the side of the beam is shown. It is appropriate for the buildup dimension to be about 20 to 200 mm in length and 3 to 10 mm in height about the beam flange width. In order to reduce stress concentration, it is desirable to gently finish and taper the build-up weld end on the beam center side.
• FIG. 1 An example of a three-dimensional view of a conventional architectural steel beam-to-column joint
• FIG. 2 Cross section of conventional steel tube beam-to-column joint with square steel tube, diaphragm and beam-flange joint
• FIG. 3 An example of a cross-sectional view in which a water-cooled or non-water-cooled copper patch is applied to the end of the member and overlay welding is performed.
• FIG. 4 A thin steel plate is applied to the end of the member with a force S, and an example of a cross-sectional view of overlay welding
• FIG. 5 A cross-sectional view of a state in which welding is performed on the end of the member 13 and the end of the member and the weld 14 are grooved together.
• FIG. 6 A cross-sectional view of a state in which joint welding has been carried out by applying build-up welding 14 and groove welding to the end of the member 13 and applying it to the mating member 16 of the joint.
• FIG. 8 External view of the through-hole opened on the side of the square steel pipe to resemble the cross section of the beam flange
• Figure 12 A sectional view in which the inner diaphragm and the square steel pipe column are groove-welded, the beam flange is overlapped with the groove weld using a backing metal, and the beam web is fillet welded to the square steel pipe column.
• FIG. 13 Cross-sectional top view in which inner diaphragm and square steel pipe column are groove-welded, beam flanges are stacked on groove welds and welded, and beam web is fillet welded to square steel pipe column.
• FIG. 14 Longitudinal cross-sectional view of the case where weld welding is applied to the back surface of the beam flange at the beam-to-column connection where the inner diaphragm is directly connected to the beam flange
• FIG. 15 Longitudinal sectional view of the case where overlay welding is applied to both the end of the inner diaphragm and the back surface of the beam flange at the beam-to-column joint directly connected to the inner diaphragm and the beam flange.
• FIG. 16 Groove welding of inner diaphragm and stiffener and square steel pipe column, overlapping of beam flange on groove joint and welding, beam welding is fillet welded to square steel pipe column, cross section top view
• FIG. 17 Groove weld the inner diaphragm and stiffener to the square steel pipe column, weld the beam flange to the back side by overlay welding on the back of the groove weld, and weld the beam web to the square steel pipe column.
• FIG. 18 Longitudinal sectional view of a case where the back metal is attached to the end of the inner diaphragm and the back surface of the beam flange is welded at the joint of the inner diaphragm and the beam flange directly connected.
• Non-consumable holding plate such as copper

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Joining Of Building Structures In Genera (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

ID=34863480

Family Applications (1)

Country Status (2)

Cited By (1)

Families Citing this family (3)

Citations (5)

Family Cites Families (3)

• 2004
  • 2004-05-10 JP JP2004139297A patent/JP4571432B2/ja not_active Expired - Lifetime
• 2005
  • 2005-02-17 WO PCT/JP2005/002501 patent/WO2005078201A1/ja not_active Ceased

Patent Citations (5)

Also Published As

Similar Documents

Legal Events