WO2020039510A1 - Column-beam joint structure and method for manufacturing h-section steel for beam in column-beam joint structure - Google Patents

Column-beam joint structure and method for manufacturing h-section steel for beam in column-beam joint structure Download PDF

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Publication number
WO2020039510A1
WO2020039510A1 PCT/JP2018/030878 JP2018030878W WO2020039510A1 WO 2020039510 A1 WO2020039510 A1 WO 2020039510A1 JP 2018030878 W JP2018030878 W JP 2018030878W WO 2020039510 A1 WO2020039510 A1 WO 2020039510A1
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WIPO (PCT)
Prior art keywords
plate
column
web plate
flange
web
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Application number
PCT/JP2018/030878
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French (fr)
Japanese (ja)
Inventor
敏雄 藤岡
Original Assignee
Ｓｄｒテクノロジー株式会社
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Priority to PCT/JP2018/030878 priority Critical patent/WO2020039510A1/en
Publication of WO2020039510A1 publication Critical patent/WO2020039510A1/en

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    • 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

Definitions

  • the present invention relates to a beam-column joint structure of a steel structure having a column and a beam for setting a yield point at a portion of the beam away from the column, and a method of manufacturing an H-beam for a beam having the beam-column joint structure.
  • Patent Document 1 discloses a beam-column joint structure in which a notch is provided in a beam flange plate
  • Patent Document 2 discloses a beam-joint structure in which a notch is formed in a reinforcing plate at a position away from a column. Have been proposed respectively.
  • Such a beam-column joint structure prevents a ductile or brittle fracture from occurring at a beam-column joint due to the external force when a large external force due to an earthquake or the like is applied.
  • the present invention has been made in view of the above-mentioned points, and an object of the present invention is to ensure a welded portion strength at an end portion of a beam without having to greatly increase the width of a flange plate and to increase a column cross section. It is possible to economically design it, and it is possible to prevent ductile and brittle fracture from occurring at the beam-column joint due to seismic force, and to maintain the desired bending strength of the beam.
  • An object of the present invention is to provide a method of manufacturing an H-shaped steel for a beam having a joint structure and a beam-column joint structure.
  • the present invention is a column-beam joint structure in which a column having a column surface extending in the vertical direction and a beam extending in the horizontal direction are joined to each other at the column surface of the column and one end in the longitudinal direction of the beam.
  • One end of the beam comprises upper and lower flange plates, and a web plate joined to the facing surfaces of the upper and lower flange plates, each of the upper and lower flange plates having one end in the longitudinal direction.
  • a flange plate swelling portion provided integrally with the flange plate swelling portion, and at least one notch provided at both edges in the width direction at positions distant from the flange plate swelling portion in the longitudinal direction.
  • Each of the flange plates is joined to the column surface of the column at one end together with the flange plate bulging portion, and the web plate is provided integrally at one end portion in the longitudinal direction. And comprises a detecting section, the web plate is bonded to the cylindrical surface of the column at one end thereof with the web plate bulging portion.
  • each of the upper and lower flange plates at one end of the beam is joined to the column surface of the column at one end thereof together with the flange plate bulging portion, and the web at one end of the beam is formed.
  • the plate is joined to the column surface of the column at one end together with the bulge portion of the web plate, so that it is possible to secure the weld strength at one end of the beam without having to greatly increase the width of the flange plate, and It is not necessary to increase the size, economic design becomes possible, and it is possible to prevent ductile and brittle fracture from occurring at the beam-column joint due to seismic force, and to maintain the desired bending strength of the beam. .
  • the flange plate bulging portions are provided on surfaces of the upper and lower flange plates facing each other, and the web plate bulging portions are provided on both surfaces of one end of the web plate. Have been.
  • At least one notch of each of the upper and lower flange plates is provided at the same position in the longitudinal direction of both edges of the upper and lower flange plates in a preferred example.
  • the method of manufacturing an H-beam for a beam having a beam-column joint structure includes the steps of: forming upper and lower flange plates having surfaces facing each other; and a web plate bonded to the facing surfaces of the upper and lower flange plates.
  • a first step of preparing an H-beam material for the provided beam and a second step of forming a flange plate bulge by rolling each of the facing surfaces of the upper and lower flange plates of the H-beam material.
  • the flange plate bulging portion, the notch, and the web plate bulging portion are formed by rolling, it is possible to efficiently manufacture an H-beam for a beam having a beam-column joint structure.
  • the method of the present invention repeats the second, third and fourth steps in order to gradually form the flange plate bulge, the notch and the web plate bulge by rolling.
  • ADVANTAGE OF THE INVENTION it is possible to secure the weld strength at the end of the beam without having to widen the width of the flange plate greatly, without having to enlarge the column section, economical design is possible, and furthermore, due to seismic force, Manufacture of a beam-column joint structure capable of preventing ductile fracture and brittle fracture from occurring at a beam-column joint and maintaining a desired bending strength of the beam and an H-beam steel for the beam having the beam-column joint structure A method can be provided.
  • FIG. 1 is an explanatory side view of a preferred embodiment of the present invention.
  • FIG. 2 is an explanatory sectional view taken along the line II-II shown in FIG.
  • FIG. 3 is an explanatory side view of one end of the beam of the specific example shown in FIG.
  • FIG. 4 is an explanatory sectional view taken along the line IV-IV of one end of the beam shown in FIG.
  • FIG. 5 is an explanatory plan view of one end of the beam shown in FIG.
  • FIG. 6 is an explanatory perspective view of one end of the beam shown in FIG.
  • FIG. 7 is a perspective explanatory view of a steel plate which is a material used for manufacturing a flange plate at one end of a beam according to the present invention.
  • FIG. 1 is an explanatory side view of a preferred embodiment of the present invention.
  • FIG. 2 is an explanatory sectional view taken along the line II-II shown in FIG.
  • FIG. 3 is an explanatory side view of one end of the
  • FIG. 8 is an explanatory view of a manufacturing stage in a rolling mill in a manufacturing process of the flange plate of the present invention.
  • FIG. 9A is an explanatory view of a flange plate material manufactured by a rolling mill in the flange plate manufacturing process of the present invention
  • FIG. 9B is an explanatory view of a flange plate manufactured from the flange plate material. is there.
  • FIG. 10A is a side view of the flange plate material shown in FIG. 9A
  • FIG. 10B is a side view of the flange plate shown in FIG. 9A.
  • FIG. 11A is an explanatory view of a web plate material manufactured by a rolling mill in a web plate manufacturing process of the present invention
  • FIG. 11A is an explanatory view of a web plate material manufactured by a rolling mill in a web plate manufacturing process of the present invention
  • FIG. 11B is an explanatory view of a flange plate manufactured from the web plate material. is there.
  • FIG. 12 is an explanatory view of another manufacturing method of the flange plate of the present invention.
  • FIG. 13 is an explanatory perspective view of an H-shaped steel, which is a material used for manufacturing one end of a beam according to the present invention.
  • FIG. 14 is an explanatory diagram of a manufacturing stage in a rolling mill in a manufacturing process using the H-section steel material shown in FIG. 13 at one end of the beam of the present invention.
  • FIG. 15 is an explanatory view of another stage of the rolling mill in the manufacturing process using the H-section steel material shown in FIG. 13 at one end of the beam of the present invention.
  • FIG. 16 is an explanatory diagram of a material at one end of a beam manufactured by the rolling mill shown in FIGS. 14 and 15.
  • FIG. 17 is an explanatory view of another rolling mill used for manufacturing one end of the beam of the present invention using the material of the H-section steel shown in FIG. 13.
  • FIG. 18 is an explanatory front view of still another rolling mill used for manufacturing one end of the beam of the present invention using the material of the H-section steel shown in FIG. 13.
  • FIG. 19 is an operation explanatory view of another rolling mill in FIG. 18 using a cross section taken along line XIX-XIX shown in FIG.
  • FIG. 20 is an operation explanatory view of another rolling mill in FIG. 18 using a cross section taken along line XIX-XIX shown in FIG.
  • FIG. 20 is an operation explanatory view of another rolling mill in FIG. 18 using a cross section taken along line XIX-XIX shown in FIG.
  • FIG. 21 is an explanatory front view of still another rolling mill used for manufacturing one end of the beam of the present invention using the material of the H-section steel shown in FIG. 13.
  • FIG. 22 is an explanatory front view of still another rolling mill used for manufacturing one end of the beam of the present invention using the H-section steel material shown in FIG. 13.
  • a beam-column joint structure 1 includes a square pillar 3 having a pillar surface 2 extending in a vertical direction V and a beam 4 extending in a horizontal direction H. And one end 5 of the beam 4 in the longitudinal direction A in the horizontal direction H are joined to each other by welding.
  • the beam 4 is connected to the one end 5 at one end 7 in the longitudinal direction A via a connection mechanism 6 in addition to the one end 5 and extends in the horizontal direction H.
  • One end is connected to the other end (not shown) in the direction A via a connection mechanism equivalent to the connection mechanism 6 and has the same other end (not shown) as the one end 5.
  • the other end is similar to the column-beam joint structure 1 at the other end (not shown) adjacent to the column 3. It is joined with a beam-column joint structure.
  • One end 5 of the beam 4 has upper and lower flange plates 11 and 12 and a web plate 14 joined to the mutually facing surfaces 13 of the flange plates 11 and 12.
  • Each of the flange plates 11 and 12 is integrally provided on one end 21 in the longitudinal direction A and on the surface 13 of one edge 22 of the one end 21 in the longitudinal direction A, and has a horizontal direction H A flange plate bulging portion 23 extending in the width direction B perpendicular to the direction A, and a crescent shape formed on both edges in the width direction B of the one end portion 21 at a position separated from the flange plate bulging portion 23 in the longitudinal direction A.
  • the other end 27 in the longitudinal direction A is integrally connected to the other end in the longitudinal direction A at one end in the longitudinal direction A, and is formed at the other end 27 and the other end 27 which are narrower than the one end 21.
  • a plurality of bolt holes 28 are provided.
  • Each of Jipureto 11 and 12 are joined by welding to cylindrical surface 2 of the column 3 at one end 21 with a flange plate bulged portion 23.
  • the web plate 14 having a width in the vertical direction V extending in the longitudinal direction A with the same width and having both surfaces 32 formed of a vertical surface is integrally provided on both surfaces 32 at one end portion 31 in the longitudinal direction A. And a plurality of bolt holes 35 formed in the other end portion 34 in the longitudinal direction A, and the web plate 14 has a web plate bulging portion 33 extending in the vertical direction V. At the one end 31 together with 33, it is joined to the column surface 2 of the column 3 by welding.
  • the main body 8 includes upper and lower flange plates 41 and 42 having the same width as the other end portions 27 of the flange plates 11 and 12 in the width direction B, and surfaces 43 and 44 of the flange plates 41 and 42 facing each other. It has a web plate 45 that is joined and has the same width as the web plate 14 in the vertical direction V.
  • the connecting mechanism 6 extends over the other end 27 of the flange plate 11 and one end 51 of the flange plate 41 in the longitudinal direction A in the longitudinal direction A, and is provided on the upper surface of the other end 27 and one end 51 of the flange plate 11.
  • the splice plate 53 is in contact with and is attached via the bolt-nut 52 and the bolt hole 28, and the other end 27 of the flange plate 11 and one end 51 of the flange plate 41 in the longitudinal direction A.
  • the width direction B the other end 34 of the web plate 14 and the one end 54 of the web plate 45 in the longitudinal direction A are interposed, and the bolts are brought into contact with the lower surfaces of the other end 27 and the one end 51 of the flange plate 11.
  • the flange plate 12 straddles the one end 61 of the flange plate 12 in the longitudinal direction A in the longitudinal direction A and contacts the lower surface of the other end 27 and the one end 61 of the flange plate 12 via the bolt-nut 62 and the bolt hole 28.
  • the other end 34 of the web plate 14, and the one end 54 of the web plate 45 in the longitudinal direction A.
  • a pair of bolts and nuts 71 and bolt holes 35 are attached to contact the respective side surfaces of the other end portion 34 of the web plate 14 with the respective side surfaces of the one end portion 54 of the web plate 45 via the bolt-nut 71 and the bolt hole 35.
  • a splice plate 72 is attached to contact the respective side surfaces of the other end portion 34 of the web plate 14 with the respective side surfaces of the one end portion 54 of the web plate 45 via the bolt-nut 71 and the bolt hole 35.
  • a splice plate 72 is attached to contact the respective side surfaces of the other end portion 34 of the web plate 14 with the respective side surfaces of the one end portion 54 of the web plate 45 via the bolt-nut 71 and the bolt hole 35.
  • each of the upper and lower flange plates 11 and 12 at one end 5 of the beam 4 is welded to the column surface 2 of the column 3 at one end 21 thereof together with the flange plate bulging portion 23.
  • the web plate 14 at one end 5 of the beam 4 is welded to the column face 2 of the column 3 at one end 31 thereof together with the web plate bulging portion 33 by welding, so that the flange plates 11 and 12 It is possible to secure the strength of the welded portion at one end 5 of the beam 4 without having to greatly increase the width in the width direction B, and it is not necessary to increase the cross section of the rectangular column, thereby enabling economical design.
  • each of the two ends 12 is formed at both edges in the width direction B of the one end 21 at a position apart from the flange plate bulging portion 23 in the longitudinal direction A. Is provided with cutouts 24 and 25, ductile fracture or brittleness occurs at the joint between each end 21 of each of the flange plates 11 and 12 and the column surface 2 of the column 3 due to the seismic force. Breakage can be prevented, and the desired bending strength of the beam 4 can be maintained.
  • a long rectangular steel plate 81 shown in FIG. 7 which is a material of the flange plates 11 and 12 is prepared, and the steel plate 81 is rotated in the R1 direction about an axis 83 of a rolling mill 82 shown in FIG.
  • the direction C see FIG. 12
  • One end portion 91, notches 92 and 93, intermediate portion 94 and other end portion 95 are formed by pressing the annular surfaces 96 and 97 of the pair of rollers 84 and 85 against the outer edges 98 and 99 of the steel plate 81 in the width direction B. As described above, the pair of rollers 84 and 85 are moved away from and close to each other in the width direction B, while the rollers 87 and 88 pass through portions other than the intermediate portion 101 of the steel plate 81 in the longitudinal direction A between the pair of rollers 87 and 88.
  • the roller 88 is moved closer in the thickness direction T, which is a direction orthogonal to the longitudinal direction A, so that the cylindrical surfaces 102 and 103 of the pair of rollers 87 and 88 respectively become the surfaces 104 and 105 of the steel plate 81, respectively.
  • T thickness direction
  • the roller 88 is separated from the roller 87 in the thickness direction T so that the cylindrical surfaces 102 and 103 of the pair of rollers 87 and 88 are made of steel, respectively.
  • FIGS. 9 and 10B are pressed against the surfaces 104 and 105, respectively, of the flange 81, and the flange plate material 111 shown in FIGS. Press cutting or laser cutting is performed at the center 112 in the direction A to form two flange plates 113 shown in FIGS. 9 and 10B. Each of the two flange plates 113 is used as the flange plate 11 or 12 at one end 5 of the beam 4.
  • a long rectangular steel plate similar to the steel plate 81 shown in FIG. 7 is prepared as a material of the web plate 14, and the long rectangular steel plate is made into a pair of rolling mills 82 shown in FIG. Of the pair of rollers 84 and 85 and the pair of rollers 87 and 88.
  • the position of the pair of rollers 84 and 85 in the width direction B is kept constant, and the pair of rollers 84 and 85 While maintaining the pressing contact of the annular surfaces 96 and 97 of 85 to both edges in the width direction B of the steel plate as the material of the web plate 14, portions other than the middle portion in the longitudinal direction of the steel plate as the material of the web plate 14
  • the rollers 87 and 88 are brought closer to each other in the thickness direction T, and the cylindrical surfaces 102 and No.
  • the flange plate 113 and the web plate 124 formed as described above are welded to each other and assembled as one end 5 of the beam 4.
  • each of the annular surfaces 131 and 132 has a shape corresponding to the shape of the surfaces 135 and 136 on both edges of the flange plate material 111 shown in FIG.
  • a long rectangular steel plate shown in FIG. 1 is repeatedly passed in the direction C.
  • the pair of rollers 133 and 134 are rotated about the axis 83 in the R1 direction, and are mutually moved in the width direction B. Is to be approached.
  • the above-described method of manufacturing the one end 5 of the beam 4 is such that the flange plate 113 and the web plate 124 are separately formed, and the individually formed flange plate 113 and web plate 124 are welded to each other.
  • the H-shaped steel 143 as the H-shaped steel material for the beam 4 including the pair of flange plates 141 and the web plate 142 shown in FIG. Of the beam 4 may be prepared from the H-shaped steel 143.
  • variable width rolling mill 151 When manufacturing the one end 5 of the beam 4 from the H-section steel 143, for example, a variable width rolling mill 151 as shown in FIGS. 14 and 15 is used.
  • the variable width rolling mill 151 includes a vertical roll 155 having a cylindrical outer peripheral surface 153 that is in pressure contact with the outer surface 152 of one flange plate 141 and rotating in the R1 direction about an axis 154, and the other flange plate 141.
  • a vertical roll 165 having a cylindrical outer peripheral surface 163 that is in pressure contact with the outer surface 162 and rotating in the R1 direction about an axis 164, and one of the flange plates 141 divided in the width direction B by a web plate 142 of one flange plate 141.
  • a horizontal roll 176 that has an annular side surface 172 that presses and contacts the inner surface 171 and a cylindrical outer peripheral surface 174 that presses and contacts one side surface 173 of the web plate 142, and that rotates in the R2 direction about an axis 175; In the width direction B by the web plate 142 of the flange plate 141 of FIG. It has an annular side surface 182 that presses and contacts one of the divided inner surfaces 181 and a cylindrical outer peripheral surface 184 that presses and contacts one side surface 173 of the web plate 142, and is coaxial with the axis 175 of the horizontal roll 176.
  • a horizontal roll 186 that rotates in the R2 direction together with the horizontal roll 176 around the center 185; and an annular side surface 192 and a web plate that press and contact the other inner surface 191 that is divided in the width direction B by the web plate 142 of one flange plate 141.
  • a horizontal roll 196 that has a cylindrical outer peripheral surface 194 that presses and contacts the other side surface 193 of the 142 and rotates in the R2 direction about the axis 195 and the web plate 142 of the other flange plate 141.
  • the horizontal rolls 176 and 186 have an annular side surface 172 and an annular side surface 182 in the width direction D of the web plate 142, and a distance L2 (L1>) smaller than the distance L1. L2), the horizontal rolls 196 and 206 are also arranged side by side so that the position can be changed in the width direction D.
  • the flat rolls 176 and 186 and the horizontal rolls 196 and 206 are juxtaposed so that the position can be changed in the thickness direction T so that they can approach and separate from each other in the thickness direction T.
  • the vertical rolls 155 and 165 are interposed between the horizontal rolls 176 and 186 and the horizontal rolls 196 and 206.
  • the H-shaped steel 143 is repeatedly inserted, and in each of the repeated insertions, when the H-shaped steel 143 passes through a portion other than the intermediate portion 211 in the longitudinal direction A, as shown in FIG.
  • the horizontal rolls 176 and 186 and the horizontal rolls 196 are arranged such that the distance between the annular side surface 182 and the annular side surface 182 in the width direction D is equal to the distance between the annular side surface 192 and the annular side surface 202 in the width direction D.
  • the horizontal rolls 176 and 186 and the horizontal rolls 196 and 206 are moved closer to each other in the thickness direction T, and when the H-shaped steel 143 passes through the intermediate portion 211 in the longitudinal direction A, as shown in FIG.
  • the horizontal rolls 176 and 186 and the horizontal rolls are arranged such that the interval in the width direction D between the annular side surface 172 and the annular side surface 182 and the interval in the width direction D between the annular side surface 192 and the annular side surface 202 are respectively equal to the interval L2.
  • the horizontal rolls 176 and 186 and the horizontal rolls 196 and 206 are moved so that each of the horizontal rolls 196 and 206 approaches each other in the width direction D and the gap in the thickness direction T between the outer peripheral surfaces 174 and 184 and the outer peripheral surfaces 194 and 204 increases.
  • the bulging portions corresponding to the flange plate bulging portions 23 are separated from each other in the thickness direction T. 12 to form the people each of inner surfaces 171, 181 and 191 and 201.
  • the bulging portion 213 corresponding to the web plate bulging portion 33 is separated from the flange plates 141 in the width direction D by a rolling mill equivalent to the rolling mill 82 shown in FIG.
  • Each of the side faces 173 and 193 is formed in advance at the center of the side face.
  • both edges 215 of the flange plates 141 of the pair of rollers 84 and 85 shown in FIG. And 216 are repeatedly rolled by press contact to form portions corresponding to the one end 21, the notches 24 and 25, the intermediate portion 26, and the other end 27, respectively, and the H-shape in which such portions are formed.
  • One end 5 of beam 4 can be obtained by cutting steel 143 from its center 217 in the longitudinal direction A.
  • each of the bulging portions 212 expands toward the web plate 142, but the horizontal roll 176, the horizontal roll 186, and the horizontal roll Instead of the 196 and the horizontal roll 206, for example, as shown in FIG.
  • a frusto-conical outer peripheral surface 221 that is in pressure contact with one inner surface 171 of one flange plate 141
  • an inclined surface having a frusto-conical outer peripheral surface 222 that comes into pressure contact with one side surface 173 of the web plate 142 and rotates in the R3 direction about an axis 223 that intersects the inner surface 171 and the side surface 173 at an angle of 90 °.
  • Roll 224 and frusto-conical outer peripheral surface 2 in pressure contact with one inner surface 181 of the other flange plate 141 1 and a frusto-conical outer peripheral surface 232 that presses against one side surface 173 of the web plate 142, and rotates in the R3 direction about an axis 233 that intersects the inner surface 181 and the side surface 173 at an angle of 90 °.
  • An inclined roll 244 that rotates in the R3 direction about an axis 243 that intersects the 191 and the side surface 193 at an angle of 90 °, and a frusto-conical outer peripheral surface that presses and contacts the other inner surface 201 of the other flange plate 141. 251 and the frusto-conical outer peripheral surface 25 that is in pressure contact with the other side surface 193 of the web plate 142. And an inclined roll 254 that rotates in the R3 direction about an axis 253 that intersects the inner surface 201 and the side surface 193 at an angle of 90 ° with respect to the inner surface 201 and the side surface 193, and the inclined roll 224 is orthogonal to the axis 223.
  • the inclined roll 234 is orthogonal to the axis 233 and in the direction F intersecting with the inner surface 181 and the side surface 173 at an angle of 90 °.
  • the inclined roll 244 is orthogonal to the axis 243 and intersects the inner surface 191 and the side surface 193 at an angle of 90 °, and the inclined roll 254 is orthogonal to the axis 253 and the inner surface 201 and the side surface.
  • a variable width rolling mill 256 which is movable in a direction H intersecting at an angle of 90 ° with respect to 193, an H-shape is used.
  • the inclined roll 224 is cut by the one flange plate 141 on the inner surface 171 by the truncated conical outer peripheral surface 221 and the web plate 142 by the side surface 173.
  • the inner roll 234 is moved in the direction E toward the inner surface 171 and the side surface 173 so as to be rolled on the frustoconical outer peripheral surface 222, respectively, and the other flange plate 141 on the inner surface 181 is moved by the frustoconical outer peripheral surface 231.
  • the web plate 142 on the side surface 173 is moved toward the inner surface 181 and the side surface 173 in the direction F so that the web plate 142 is rolled on the frustoconical outer peripheral surface 232, and the inclined roll 244 is moved to the one flange on the inner surface 191.
  • the plate 141 has a frustoconical outer peripheral surface 241 and the web plate 142 on the side surface 193 has a frustoconical outer peripheral surface 242.
  • the plate 142 is moved in the direction H toward the inner surface 201 and the side surface 193 so as to be rolled on the frustoconical outer peripheral surface 252, respectively.
  • the inclined roll 224 is moved in the direction E
  • the inclined roll 234 is moved in the direction F
  • the inclined roll 244 is moved in the direction G
  • the inclined roll 254 is moved in the direction H in the opposite direction.
  • each of the flange plates 141 of the pair of rollers 84 and 85 shown in FIG. By repeatedly performing rolling by pressing and contacting both edges 215 and 216, portions corresponding to one end portion 21, notches 24 and 25, intermediate portion 26 and other end portion 27 are formed, and such a portion is formed.
  • One end 5 of the beam 4 can be obtained by cutting the formed H-shaped steel 143 from the center 217 in the longitudinal direction A, and an edger roll machine 266 having a hole-type variable depth mechanism shown in FIG. In the H-section steel 143 shown in FIG.
  • a bulging portion 212 corresponding to the flange plate bulging portion 23 and a web In addition to the bulging portion 213 corresponding to the web plate bulging portion 33 on each of the side surfaces 173 and 193 of the plate 142, one end portion 21, the notches 24 and 25, the middle portion 26 and the other end portion are provided on each of the flange plates 141. You may form the site
  • the edger roll machine 266 includes a rotating shaft 272 that is rotated in the R2 direction about an axis 271, and respective edges 215 of a pair of flange plates 141 of the H-shaped steel 143 that are fixed to the rotating shaft 272.
  • a pair of flanged horizontal rolls 274 having a cylindrical outer peripheral surface 273 that comes into pressure contact with the annular side surface 275 and the web plate 142 that come into pressure contact with one inner surface 171 and 181 of one and the other flange plate 141.
  • a pair of web restraining ring rolls 277 each having a cylindrical outer peripheral surface 276 that is in pressure contact with one side face 173, and an axis eccentric with respect to the axis 271 between each of the rotating shaft 272 and the web restraining ring roll 277.
  • the inner circumferential surface 279 is arranged with a core 278 and is formed on the annular inner circumferential surface 279 via a cylindrical inner circumferential bearing.
  • the web restraining ring roll 277 rotates around the shaft 278 on the annular outer circumferential surface 280 via a cylindrical outer circumferential bearing, while being mounted on the rolling shaft 272 so as to be rotatable about the shaft 271.
  • the other pair of flange edging horizontal rolls 294 having a cylindrical outer peripheral surface 293 that comes into pressure contact with each of the respective edges 216 of the flange plate 141, and the other inner surfaces 191 and 201 of one and the other flange plates 141 are pressed.
  • the cylindrical outer peripheral surface 296 that is in pressure contact with the annular side surface 295 that comes into contact with the other side surface 193 of the web plate 142 is respectively formed.
  • a pair of web constraining ring rolls 297, and an axis 298 eccentric to the axis 291 between the rotating shaft 292 and the web constraining ring roll 297 Is mounted on the rotating shaft 292 via a cylindrical inner peripheral bearing so as to be rotatable about the axis 291, while the annular outer peripheral surface 300 is provided with a web restraining ring roll via a cylindrical outer peripheral bearing.
  • 297 is a pair of eccentric intermediate ring rolls 301 mounted so as to be rotatable about an axis 298, and an eccentric position (not shown) for setting the respective eccentric positions of the pair of eccentric intermediate ring rolls 281 and 301.
  • one of the horizontal rolls 274 for flange edging and one of the web restraining ring rolls 277 are provided with a web plate.
  • 142 are attached to the rotating shaft 272 so as to approach and separate from each other in the width direction D, and the other horizontal roll 294 for flange edging and the other web restraining ring roll 297 also approach each other in the width direction D of the web plate 142. , Which are detachably mounted on the rotating shaft 292.
  • the edger roll machine 266 rotates the rotating shafts 272 and 292 in the R2 direction to rotate the pair of flange edging horizontal rolls 274 and the pair of web restraining ring rolls 277 and the pair of flange edging horizontal rolls 294 and the pair of web restraining rings.
  • the H-section steel 143 inserted between the roll 297 and the roll 297 is moved in the direction C while being rolled, and this rolling movement causes a pair of web restraining ring rolls 277 and a pair of
  • the web restraining ring roll 297 forms bulging portions 212 on the inner surfaces 171 and 191 of one flange plate 141 and the inner surfaces 181 and 201 of the other flange plate 141 and, if necessary, one and the other side surfaces 173 and 173 of the web plate 142.
  • one end 21 is formed by rolling a pair of flange edging horizontal rolls 274 and 294 at the eccentric position set by the eccentric position setting device on both edges 215 and 216 of the one and other flange plates 141. Portions corresponding to the notches 24 and 25, the intermediate portion 26, and the other end portion 27 are formed in the one and other flange plates 141, respectively.
  • a horizontal roll 312 that rotates in the R2 direction about the axis 311 and presses and contacts each of the edges 215 of the pair of flange plates 141, and rotates in the R2 direction about the axis 321.
  • a horizontal roll 322 that presses and contacts each of the edges 216 of the pair of flange plates 141, and a cylindrical outer peripheral surface 332 that rotates in the R2 direction about the axis 331 and presses and contacts one side surface 173 of the web plate 142.
  • the other pair of web local rolling rolls 333 each having a cylindrical outer peripheral surface 342 that rotates in the R2 direction about the axis 341 and presses and contacts the other side surface 193 of the web plate 142.
  • the bulging portion 213 corresponding to the web plate bulging portion 33 is independently formed by rolling the web plate 142 in cooperation with the pair of web local rolling rolls 343 and the side surface 173 of the web plate 142 of the H-section steel 143. And 193.
  • a vertical roll 155 having a cylindrical outer peripheral surface 153 which comes into press contact with the outer surface 152 of the above-mentioned one flange plate 141 and rotates in the R1 direction about an axis 154 and the other flange.
  • a vertical roll 165 having a cylindrical outer peripheral surface 163 that is in pressure contact with the outer surface 162 of the plate 141 and rotating in the R1 direction about the axis 164, one side rotates in the R1 direction about the axis 351 and one side.
  • Flange local rolling roll 352 that presses and contacts one inner surface 171 of the flange plate 141
  • Flange local rolling roll that rotates in the R1 direction about the axis 361 and presses and contacts the other inner surface 191 of one flange plate 141.
  • a flange local rolling roll 372 that presses and contacts one inner surface 181 of the plate 141; a flange local rolling roll 382 that rotates in the R1 direction about the axis 381 and presses and contacts the other inner surface 201 of the other flange plate 141;
  • the swelling portion 212 corresponding to the flange plate swelling portion 23 by the rolling of the other flange plate 141 in cooperation with the inner surfaces 171 and 191 and the inner surfaces 181 and 201 of the flange plate 141 of the H-section steel 143 alone, respectively. It may be formed.
  • the one end 5 of the beam 4 of the present invention may be formed not only by rolling but also by casting or cutting.

Abstract

One end section 5 of a beam 4 is equipped with upper and lower flange plates 11 and 12 and a web plate 14 that is joined to mutually opposing surfaces 13 of the flange plates 11 and 12, wherein each of the flange plates 11 and 12 is equipped with a flange-plate bulging section 23 extending in a width direction B that is orthogonal to a longitudinal direction A, that is to say, a horizontal direction H, and the web plate 14 is equipped with a web-plate bulging section 33 that extends in a vertical direction V.

Description

柱梁接合構造及び柱梁接合構造の梁用のＨ形鋼の製造方法Beam-to-column joint structure and method of manufacturing H-beam for beam of beam-to-column joint structure
　本発明は、柱から離れた梁の部位に降伏点を設定する柱及び梁を有する鋼構造物の柱梁接合構造及び柱梁接合構造の梁用のＨ形鋼の製造方法に関する。 The present invention relates to a beam-column joint structure of a steel structure having a column and a beam for setting a yield point at a portion of the beam away from the column, and a method of manufacturing an H-beam for a beam having the beam-column joint structure.
　柱梁接合部から離れた部位に降伏点を設定するいわゆるＲＢＳ工法（Ｒｅｄｕｃｅｄ　Ｂｅａｍ　Ｓｅｃｔｉｏｎ　Ｃｏｎｎｅｃｔｉｏｎｓ）が適用された柱梁接合構造が提案されている。 柱 A beam-to-column joint structure to which a so-called RBS method (Reduced Beam Section Connections) for setting a yield point at a site away from a beam-column joint has been proposed.
　特許文献１には、梁フランジプレートに切欠きを設けてなる柱梁接合構造が、また、特許文献２には、補強プレートに柱から離れた位置に切欠きが形成されている柱梁接合構造が夫々提案されている。 Patent Document 1 discloses a beam-column joint structure in which a notch is provided in a beam flange plate, and Patent Document 2 discloses a beam-joint structure in which a notch is formed in a reinforcing plate at a position away from a column. Have been proposed respectively.
特開２００６－００２５０５号公報JP 2006-002505 A 特開２００２－０８８９１２号公報JP-A-2002-088912
　斯かる柱梁接合構造は、地震等による大きい外力が与えられた際に、当該外力に起因して柱梁接合部で延性破断や脆性破壊が生じることを防止するようになっている。 Such a beam-column joint structure prevents a ductile or brittle fracture from occurring at a beam-column joint due to the external force when a large external force due to an earthquake or the like is applied.
　しかしながら、特許文献における柱梁接合構造では、柱面での梁フランジプレートの破断を防止するため、梁幅をより広くして許容値を確保する必要がある。この結果、柱幅をより広げる必要が生じて、経済設計が困難になるという更なる改善の余地がある。 However, in the beam-column joint structure disclosed in the patent document, it is necessary to secure a permissible value by widening the beam width in order to prevent the beam flange plate from breaking at the column surface. As a result, it is necessary to further increase the column width, and there is room for further improvement that economic design becomes difficult.
　本発明は、前記諸点に鑑みてなされたものであり、その目的とするところは、フランジプレートの幅を大きく拡幅する必要なくして梁の端部の溶接部強度を確保し得、柱断面を大きくする必要がなく、経済設計が可能となり、しかも、地震力により柱梁接合部で延性破断や脆性破壊が生じることを防止することができ、梁の所望の曲げ耐力を維持することのできる柱梁接合構造及び柱梁接合構造の梁用のＨ形鋼の製造方法を提供することにある。 The present invention has been made in view of the above-mentioned points, and an object of the present invention is to ensure a welded portion strength at an end portion of a beam without having to greatly increase the width of a flange plate and to increase a column cross section. It is possible to economically design it, and it is possible to prevent ductile and brittle fracture from occurring at the beam-column joint due to seismic force, and to maintain the desired bending strength of the beam. An object of the present invention is to provide a method of manufacturing an H-shaped steel for a beam having a joint structure and a beam-column joint structure.
　本発明は、鉛直方向に伸びた柱面を有した柱と水平方向に伸びた梁とを、当該柱の柱面と梁の長手方向の一端部とで互いに接合した柱梁接合構造であって、梁の一端部は、上下のフランジプレートと、この上下のフランジプレートの互いに対面する面に接合されているウェブプレートとを具備しており、上下のフランジプレートの夫々は、長手方向のその一端に一体的に設けられているフランジプレート膨出部と、このフランジプレート膨出部から長手方向において離れた位置の幅方向の両縁に設けられた少なくとも一つの切欠とを具備しており、上下のフランジプレートの夫々は、フランジプレート膨出部と共にその一端で柱の柱面に接合されており、ウェブプレートは、長手方向のその一端部に一体的に設けられているウェブプレート膨出部を具備しており、ウェブプレートは、ウェブプレート膨出部と共にその一端で柱の柱面に接合されている。 The present invention is a column-beam joint structure in which a column having a column surface extending in the vertical direction and a beam extending in the horizontal direction are joined to each other at the column surface of the column and one end in the longitudinal direction of the beam. , One end of the beam comprises upper and lower flange plates, and a web plate joined to the facing surfaces of the upper and lower flange plates, each of the upper and lower flange plates having one end in the longitudinal direction. A flange plate swelling portion provided integrally with the flange plate swelling portion, and at least one notch provided at both edges in the width direction at positions distant from the flange plate swelling portion in the longitudinal direction. Each of the flange plates is joined to the column surface of the column at one end together with the flange plate bulging portion, and the web plate is provided integrally at one end portion in the longitudinal direction. And comprises a detecting section, the web plate is bonded to the cylindrical surface of the column at one end thereof with the web plate bulging portion.
　本発明の柱梁接合構造によれば、梁の一端部における上下のフランジプレートの夫々は、フランジプレート膨出部と共にその一端部で柱の柱面に接合されており、梁の一端部におけるウェブプレートは、ウェブプレート膨出部と共にその一端部で柱の柱面に接合されているので、フランジプレートの幅を大きく拡幅する必要なくして梁の一端部の溶接部強度を確保し得、柱断面を大きくする必要がなく、経済設計が可能となり、しかも、地震力により柱梁接合部で延性破断や脆性破壊が生じることを防止することができ、梁の所望の曲げ耐力を維持することができる。 According to the column-beam joint structure of the present invention, each of the upper and lower flange plates at one end of the beam is joined to the column surface of the column at one end thereof together with the flange plate bulging portion, and the web at one end of the beam is formed. The plate is joined to the column surface of the column at one end together with the bulge portion of the web plate, so that it is possible to secure the weld strength at one end of the beam without having to greatly increase the width of the flange plate, and It is not necessary to increase the size, economic design becomes possible, and it is possible to prevent ductile and brittle fracture from occurring at the beam-column joint due to seismic force, and to maintain the desired bending strength of the beam. .
　本発明の柱梁接合構造の好ましい例では、フランジプレート膨出部は、上下のフランジプレートの互いに対面する面に設けられており、ウェブプレート膨出部は、ウェブプレートの一端部の両面に設けられている。 In a preferred example of the beam-column joint structure of the present invention, the flange plate bulging portions are provided on surfaces of the upper and lower flange plates facing each other, and the web plate bulging portions are provided on both surfaces of one end of the web plate. Have been.
　本発明の柱梁接合構造において、上下のフランジプレートの夫々の少なくとも一つの切欠きは、好ましい例では、上下のフランジプレートの両縁の長手方向における同一の位置に設けられている。 In the column-beam joint structure of the present invention, at least one notch of each of the upper and lower flange plates is provided at the same position in the longitudinal direction of both edges of the upper and lower flange plates in a preferred example.
　本発明の柱梁接合構造の梁用のＨ形鋼を製造する方法は、互いに対面した面を有する上下のフランジプレートとこの上下のフランジプレートの互いに対面した面に接合されているウェブプレートとを具備した梁用のＨ形鋼素材を準備する第一の段階と、Ｈ形鋼素材の上下のフランジプレートの互いに対面する面の夫々に圧延によりフランジプレート膨出部を形成する第二の段階と、フランジプレート膨出部から長手方向において離れたＨ形鋼素材の上下のフランジプレートの幅方向の両縁に切欠きを圧延により形成する第三の段階と、Ｈ形鋼素材のウェブプレートの両面にウェブプレート膨出部を圧延により形成する第四の段階とを具備している。 The method of manufacturing an H-beam for a beam having a beam-column joint structure according to the present invention includes the steps of: forming upper and lower flange plates having surfaces facing each other; and a web plate bonded to the facing surfaces of the upper and lower flange plates. A first step of preparing an H-beam material for the provided beam, and a second step of forming a flange plate bulge by rolling each of the facing surfaces of the upper and lower flange plates of the H-beam material. A third step in which notches are formed in both widthwise edges of the upper and lower flange plates of the H-shaped steel material which is separated from the flange plate bulging portion in the longitudinal direction by rolling, and both sides of the web plate of the H-shaped steel material. And forming a web plate bulge portion by rolling.
　本発明の方法によれば、フランジプレート膨出部と切欠きとウェブプレート膨出部とを圧延により形成しているために、柱梁接合構造の梁用のＨ形鋼を効率よく製造できる。 According to the method of the present invention, since the flange plate bulging portion, the notch, and the web plate bulging portion are formed by rolling, it is possible to efficiently manufacture an H-beam for a beam having a beam-column joint structure.
　本発明の方法は、好ましい例では、圧延によりフランジプレート膨出部、切欠き及びウェブプレート膨出部を徐々に形成するべく、第二、第三及び第四の段階を繰り返して行う。 方法 In a preferred embodiment, the method of the present invention repeats the second, third and fourth steps in order to gradually form the flange plate bulge, the notch and the web plate bulge by rolling.
　本発明によれば、フランジプレートの幅を大きく拡幅する必要なくして梁の端部の溶接部強度を確保し得、柱断面を大きくする必要がなく、経済設計が可能となり、しかも、地震力により柱梁接合部で延性破断や脆性破壊が生じることを防止することができ、梁の所望の曲げ耐力を維持することのできる柱梁接合構造及び柱梁接合構造の梁用のＨ形鋼の製造方法を提供し得る。 ADVANTAGE OF THE INVENTION According to this invention, it is possible to secure the weld strength at the end of the beam without having to widen the width of the flange plate greatly, without having to enlarge the column section, economical design is possible, and furthermore, due to seismic force, Manufacture of a beam-column joint structure capable of preventing ductile fracture and brittle fracture from occurring at a beam-column joint and maintaining a desired bending strength of the beam and an H-beam steel for the beam having the beam-column joint structure A method can be provided.
図１は、本発明の好ましい具体例の側面説明図である。FIG. 1 is an explanatory side view of a preferred embodiment of the present invention. 図２は、図１に示すＩＩ－ＩＩ線矢視断面説明図である。FIG. 2 is an explanatory sectional view taken along the line II-II shown in FIG. 図３は、図１に示す具体例の梁の一端部の側面説明図である。FIG. 3 is an explanatory side view of one end of the beam of the specific example shown in FIG. 図４は、図３に示す梁の一端部のＩＶ－ＩＶ線矢視断面説明図である。FIG. 4 is an explanatory sectional view taken along the line IV-IV of one end of the beam shown in FIG. 図５は、図３に示す梁の一端部の平面説明図である。FIG. 5 is an explanatory plan view of one end of the beam shown in FIG. 図６は、図３に示す梁の一端部の斜視説明図である。FIG. 6 is an explanatory perspective view of one end of the beam shown in FIG. 図７は、本発明の梁の一端部のフランジプレートの製造に用いる素材である鋼板の斜視説明図である。FIG. 7 is a perspective explanatory view of a steel plate which is a material used for manufacturing a flange plate at one end of a beam according to the present invention. 図８は、本発明のフランジプレートの製造工程における圧延機での製造段階の説明図である。FIG. 8 is an explanatory view of a manufacturing stage in a rolling mill in a manufacturing process of the flange plate of the present invention. 図９の（ａ）は、本発明のフランジプレートの製造工程における圧延機で製造されたフランジプレート素材、そして、図９の（ｂ）は、フランジプレート素材から製造されたフランジプレートの説明図である。FIG. 9A is an explanatory view of a flange plate material manufactured by a rolling mill in the flange plate manufacturing process of the present invention, and FIG. 9B is an explanatory view of a flange plate manufactured from the flange plate material. is there. 図１０の（ａ）は、図９（ａ）に示すフランジプレート素材の側面説明図、そして、図１０の（ｂ）は、図９（ａ）に示すフランジプレートの側面説明図である。FIG. 10A is a side view of the flange plate material shown in FIG. 9A, and FIG. 10B is a side view of the flange plate shown in FIG. 9A. 図１１の（ａ）は、本発明のウェブプレートの製造工程における圧延機で製造されたウェブプレート素材、そして、図１１の（ｂ）は、ウェブプレート素材から製造されたフランジプレートの説明図である。FIG. 11A is an explanatory view of a web plate material manufactured by a rolling mill in a web plate manufacturing process of the present invention, and FIG. 11B is an explanatory view of a flange plate manufactured from the web plate material. is there. 図１２は、本発明のフランジプレートの他の製造方法の説明図である。FIG. 12 is an explanatory view of another manufacturing method of the flange plate of the present invention. 図１３は、本発明の梁の一端部の製造に用いる素材であるＨ形鋼の斜視説明図である。FIG. 13 is an explanatory perspective view of an H-shaped steel, which is a material used for manufacturing one end of a beam according to the present invention. 図１４は、本発明の梁の一端部の図１３に示すＨ形鋼の素材を用いた製造工程における圧延機での製造段階の説明図である。FIG. 14 is an explanatory diagram of a manufacturing stage in a rolling mill in a manufacturing process using the H-section steel material shown in FIG. 13 at one end of the beam of the present invention. 図１５は、本発明の梁の一端部の図１３に示すＨ形鋼の素材を用いた製造工程における圧延機での他の製造段階の説明図である。FIG. 15 is an explanatory view of another stage of the rolling mill in the manufacturing process using the H-section steel material shown in FIG. 13 at one end of the beam of the present invention. 図１６は、図１４及び図１５に示す圧延機で製造された梁の一端部の素材の説明図である。FIG. 16 is an explanatory diagram of a material at one end of a beam manufactured by the rolling mill shown in FIGS. 14 and 15. 図１７は、本発明の梁の一端部の図１３に示すＨ形鋼の素材を用いた製造に用いる他の圧延機の説明図である。FIG. 17 is an explanatory view of another rolling mill used for manufacturing one end of the beam of the present invention using the material of the H-section steel shown in FIG. 13. 図１８は、本発明の梁の一端部の図１３に示すＨ形鋼の素材を用いた製造に用いる更に他の圧延機の正面説明図である。FIG. 18 is an explanatory front view of still another rolling mill used for manufacturing one end of the beam of the present invention using the material of the H-section steel shown in FIG. 13. 図１９は、図１８に示すＸＩＸ－ＸＩＸ線矢視断面を用いた図１８の他の圧延機の動作説明図である。FIG. 19 is an operation explanatory view of another rolling mill in FIG. 18 using a cross section taken along line XIX-XIX shown in FIG. 図２０は、図１８に示すＸＩＸ－ＸＩＸ線矢視断面を用いた図１８の他の圧延機の動作説明図である。FIG. 20 is an operation explanatory view of another rolling mill in FIG. 18 using a cross section taken along line XIX-XIX shown in FIG. 図２１は、本発明の梁の一端部の図１３に示すＨ形鋼の素材を用いた製造に用いる更に他の圧延機の正面説明図である。FIG. 21 is an explanatory front view of still another rolling mill used for manufacturing one end of the beam of the present invention using the material of the H-section steel shown in FIG. 13. 図２２は、本発明の梁の一端部の図１３に示すＨ形鋼の素材を用いた製造に用いる更に他の圧延機の正面説明図である。FIG. 22 is an explanatory front view of still another rolling mill used for manufacturing one end of the beam of the present invention using the H-section steel material shown in FIG. 13.
　次に、本発明の実施の形態を、図に示す好ましい具体例に基づいて更に詳細に説明する。なお、本発明はこれら例に何等限定されない。 Next, embodiments of the present invention will be described in more detail based on preferred specific examples shown in the drawings. The present invention is not limited to these examples.
　図１から図６において、柱梁接合構造１は、鉛直方向Ｖに伸びた柱面２を有した四角柱の柱３と水平方向Ｈに伸びた梁４とを、当該柱３の柱面２と梁４の水平方向Ｈにおいて長手方向Ａの一端部５とで互いに溶接により接合してなる。 1 to 6, a beam-column joint structure 1 includes a square pillar 3 having a pillar surface 2 extending in a vertical direction V and a beam 4 extending in a horizontal direction H. And one end 5 of the beam 4 in the longitudinal direction A in the horizontal direction H are joined to each other by welding.
　梁４は、一端部５に加えて、一端部５に連結機構６を介して長手方向Ａの一端部７で連結されていると共に水平方向Ｈに伸びた本体部８と、本体部８の長手方向Ａの他端部（図示せず）に連結機構６と同等の連結機構を介して連結されていると共に一端部５と同様の他端部（図示せず）とを具備しており、一端部５で柱３の柱面２に柱梁接合構造１でもって接合されていると同様に、柱３に隣接する柱（図示せず）に当該他端部で柱梁接合構造１と同様の柱梁接合構造をもって接合されている。 The beam 4 is connected to the one end 5 at one end 7 in the longitudinal direction A via a connection mechanism 6 in addition to the one end 5 and extends in the horizontal direction H. One end is connected to the other end (not shown) in the direction A via a connection mechanism equivalent to the connection mechanism 6 and has the same other end (not shown) as the one end 5. In the same manner as the column 5 is joined to the column surface 2 of the column 3 with the column-beam joint structure 1 at the portion 5, the other end is similar to the column-beam joint structure 1 at the other end (not shown) adjacent to the column 3. It is joined with a beam-column joint structure.
　梁４の一端部５は、上下のフランジプレート１１及び１２と、フランジプレート１１及び１２の互いに対面する面１３に接合されているウェブプレート１４とを具備している。 One end 5 of the beam 4 has upper and lower flange plates 11 and 12 and a web plate 14 joined to the mutually facing surfaces 13 of the flange plates 11 and 12.
　フランジプレート１１及び１２の夫々は、長手方向Ａの一端部２１と、一端部２１の長手方向Ａの一方の縁部２２における面１３に一体的に設けられていると共に水平方向Ｈであって長手方向Ａに直交する幅方向Ｂに伸びたフランジプレート膨出部２３と、フランジプレート膨出部２３から長手方向Ａにおいて離れた位置の一端部２１の幅方向Ｂの両縁に形成された三日月状の切欠２４及び２５と、一端部２１の長手方向Ａの他方の縁部に長手方向Ａの一方の縁部で一体的に連接されていると共に平面視で台形状の中間部２６と、中間部２６の長手方向Ａの他方の縁部に長手方向Ａの一方の縁部で一体的に連接されていると共に一端部２１よりも狭幅の他端部２７と、他端部２７に形成された複数個のボルト孔２８とを具備しており、フランジプレート１１及び１２の夫々は、フランジプレート膨出部２３と共にその一端部２１で柱３の柱面２に溶接により接合されている。 Each of the flange plates 11 and 12 is integrally provided on one end 21 in the longitudinal direction A and on the surface 13 of one edge 22 of the one end 21 in the longitudinal direction A, and has a horizontal direction H A flange plate bulging portion 23 extending in the width direction B perpendicular to the direction A, and a crescent shape formed on both edges in the width direction B of the one end portion 21 at a position separated from the flange plate bulging portion 23 in the longitudinal direction A. Notches 24 and 25, an intermediate portion 26 integrally connected to the other edge of the one end 21 in the longitudinal direction A at one edge in the longitudinal direction A, and having a trapezoidal shape in plan view; The other end 27 in the longitudinal direction A is integrally connected to the other end in the longitudinal direction A at one end in the longitudinal direction A, and is formed at the other end 27 and the other end 27 which are narrower than the one end 21. A plurality of bolt holes 28 are provided. Each of Jipureto 11 and 12 are joined by welding to cylindrical surface 2 of the column 3 at one end 21 with a flange plate bulged portion 23.
　鉛直方向Ｖにおける幅が同幅をもって長手方向Ａに伸びていると共に鉛直面からなる両面３２を有したウェブプレート１４は、長手方向Ａのその一端部３１における両面３２に一体的に設けられていると共に鉛直方向Ｖに伸びたウェブプレート膨出部３３と、長手方向Ａのその他端部３４に形成された複数個のボルト孔３５とを具備しており、ウェブプレート１４は、ウェブプレート膨出部３３と共にその一端部３１で柱３の柱面２に溶接により接合されている。 The web plate 14 having a width in the vertical direction V extending in the longitudinal direction A with the same width and having both surfaces 32 formed of a vertical surface is integrally provided on both surfaces 32 at one end portion 31 in the longitudinal direction A. And a plurality of bolt holes 35 formed in the other end portion 34 in the longitudinal direction A, and the web plate 14 has a web plate bulging portion 33 extending in the vertical direction V. At the one end 31 together with 33, it is joined to the column surface 2 of the column 3 by welding.
　本体部８は、フランジプレート１１及び１２の他端部２７と同幅の幅方向Ｂにおける幅をもった上下のフランジプレート４１及び４２と、フランジプレート４１及び４２の互いに対面する面４３及び４４に接合されていると共にウェブプレート１４と同幅の鉛直方向Ｖにおける幅をもったウェブプレート４５とを具備している。 The main body 8 includes upper and lower flange plates 41 and 42 having the same width as the other end portions 27 of the flange plates 11 and 12 in the width direction B, and surfaces 43 and 44 of the flange plates 41 and 42 facing each other. It has a web plate 45 that is joined and has the same width as the web plate 14 in the vertical direction V.
　連結機構６は、フランジプレート１１の他端部２７とフランジプレート４１の長手方向Ａの一端部５１とに長手方向Ａにおいて跨って当該フランジプレート１１の他端部２７と一端部５１との上面に接触してボルト－ナット５２及びボルト孔２８を介して取付けられたスプライスプレート５３と、フランジプレート１１の他端部２７とフランジプレート４１の長手方向Ａの一端部５１とに長手方向Ａにおいて跨って且つ幅方向Ｂにおいてウェブプレート１４の他端部３４及びウェブプレート４５の長手方向Ａの一端部５４を間にして当該フランジプレート１１の他端部２７と一端部５１との下面に接触してボルト－ナット５２及びボルト孔２８を介して取付けられた一対のスプライスプレート５５と、フランジプレート１２の他端部２７とフランジプレート４２の長手方向Ａの一端部６１とに長手方向Ａにおいて跨って当該フランジプレート１２の他端部２７と一端部６１との下面に接触してボルト－ナット６２及びボルト孔２８を介して取付けられたスプライスプレート６３と、フランジプレート１２の他端部２７とフランジプレート４２の長手方向Ａの一端部６１とに長手方向Ａにおいて跨って且つ幅方向Ｂにおいてウェブプレート１４の他端部３４及びウェブプレート４５の長手方向Ａの一端部５４を間にして当該フランジプレート１２の他端部２７と一端部６１との上面に接触してボルト－ナット６２及びボルト孔２８を介して取付けられた一対のスプライスプレート６５と、ウェブプレート１４の他端部３４とウェブプレート４５の一端部５４とに長手方向Ａにおいて跨って当該ウェブプレート１４の他端部３４の両側面の夫々とウェブプレート４５の一端部５４の両側面の夫々とに接触してボルト－ナット７１及びボルト孔３５を介して取付けられた一対のスプライスプレート７２とを具備している。 The connecting mechanism 6 extends over the other end 27 of the flange plate 11 and one end 51 of the flange plate 41 in the longitudinal direction A in the longitudinal direction A, and is provided on the upper surface of the other end 27 and one end 51 of the flange plate 11. In the longitudinal direction A, the splice plate 53 is in contact with and is attached via the bolt-nut 52 and the bolt hole 28, and the other end 27 of the flange plate 11 and one end 51 of the flange plate 41 in the longitudinal direction A. In the width direction B, the other end 34 of the web plate 14 and the one end 54 of the web plate 45 in the longitudinal direction A are interposed, and the bolts are brought into contact with the lower surfaces of the other end 27 and the one end 51 of the flange plate 11. A pair of splice plates 55 attached via nuts 52 and bolt holes 28, and the other end 27 of the flange plate 12; The flange plate 12 straddles the one end 61 of the flange plate 12 in the longitudinal direction A in the longitudinal direction A and contacts the lower surface of the other end 27 and the one end 61 of the flange plate 12 via the bolt-nut 62 and the bolt hole 28. The attached splice plate 63, the other end 27 of the flange plate 12 and the one end 61 of the flange plate 42 in the longitudinal direction A in the longitudinal direction A and the other end 34 of the web plate 14 in the width direction B and A pair of bolts and nuts 62 and bolt holes 28 are provided in contact with the upper surfaces of the other end 27 and one end 61 of the flange plate 12 with one end 54 in the longitudinal direction A of the web plate 45 therebetween. Of the web plate 14, the other end 34 of the web plate 14, and the one end 54 of the web plate 45 in the longitudinal direction A. Thus, a pair of bolts and nuts 71 and bolt holes 35 are attached to contact the respective side surfaces of the other end portion 34 of the web plate 14 with the respective side surfaces of the one end portion 54 of the web plate 45 via the bolt-nut 71 and the bolt hole 35. And a splice plate 72.
　以上の柱梁接合構造１によれば、梁４の一端部５における上下のフランジプレート１１及び１２の夫々は、フランジプレート膨出部２３と共にその一端部２１で柱３の柱面２に溶接により接合されており、梁４の一端部５におけるウェブプレート１４は、ウェブプレート膨出部３３と共にその一端部３１で柱３の柱面２に溶接により接合されているので、フランジプレート１１及び１２の幅方向Ｂの幅を大きく拡幅する必要なくして梁４の一端部５の溶接部強度を確保し得、四角形の柱断面を大きくする必要がなく、経済設計が可能となり、しかも、フランジプレート１１及び１２の夫々は、他端部２７よりも幅広の一端部２１に加えて、フランジプレート膨出部２３から長手方向Ａにおいて離れた位置の一端部２１の幅方向Ｂの両縁に形成された切欠２４及び２５を具備しているために、地震力により柱梁接合部であるフランジプレート１１及び１２の夫々の一端部２１と柱３の柱面２との接合部で延性破断や脆性破壊が生じることを防止することができ、梁４の所望の曲げ耐力を維持することのできる。 According to the column-beam joint structure 1 described above, each of the upper and lower flange plates 11 and 12 at one end 5 of the beam 4 is welded to the column surface 2 of the column 3 at one end 21 thereof together with the flange plate bulging portion 23. The web plate 14 at one end 5 of the beam 4 is welded to the column face 2 of the column 3 at one end 31 thereof together with the web plate bulging portion 33 by welding, so that the flange plates 11 and 12 It is possible to secure the strength of the welded portion at one end 5 of the beam 4 without having to greatly increase the width in the width direction B, and it is not necessary to increase the cross section of the rectangular column, thereby enabling economical design. In addition to the one end 21 wider than the other end 27, each of the two ends 12 is formed at both edges in the width direction B of the one end 21 at a position apart from the flange plate bulging portion 23 in the longitudinal direction A. Is provided with cutouts 24 and 25, ductile fracture or brittleness occurs at the joint between each end 21 of each of the flange plates 11 and 12 and the column surface 2 of the column 3 due to the seismic force. Breakage can be prevented, and the desired bending strength of the beam 4 can be maintained.
　以下、梁４の一端部５の製造方法について説明する。 Hereinafter, a method for manufacturing the one end 5 of the beam 4 will be described.
　先ず、フランジプレート１１及び１２の素材である図７に示す長尺矩形の鋼板８１を準備し、鋼板８１を、図８に示す圧延機８２の軸心８３を中心としてＲ１方向に回転して幅方向Ｂの圧延を行う一対のローラ８４及び８５並びに軸心８６を中心としてＲ２方向に回転して厚み方向の圧延を行う一対のローラ８７及び８８間に繰り返し通過（図８の紙面に対して直交する方向Ｃ（図１２参照）に移動）させ、この繰り返しの通過の夫々において、フランジプレート１１及び１２の夫々の一端部２１、切欠２４及び２５、中間部２６及び他端部２７の夫々に相当する一端部９１、切欠９２及び９３、中間部９４及び他端部９５を一対のローラ８４及び８５の円環状面９６及び９７の鋼板８１の幅方向Ｂの外縁９８及び９９への押圧接触で形成するように、一対のローラ８４及び８５を幅方向Ｂに関して互いに離反、接近させる一方、一対のローラ８７及び８８間の鋼板８１の長手方向Ａの中間部１０１以外の部位の通過に際しては、ローラ８７に対してローラ８８を長手方向Ａに対して直交する方向である厚み方向Ｔに関して接近させて一対のローラ８７及び８８の円筒状面１０２及び１０３の夫々を鋼板８１の面１０４及び１０５の夫々に押圧接触させると共に一対のローラ８７及び８８間の鋼板８１の長手方向Ａの中間部１０１の通過に際しては、フランジプレート膨出部２３に相当する膨出部１０６を鋼板８１の一方の面１０５に形成すべく、ローラ８７に対してローラ８８を厚み方向Ｔに関して離間させて一対のローラ８７及び８８の円筒状面１０２及び１０３の夫々を鋼板８１の面１０４及び１０５の夫々に押圧接触させ、圧延機８２による鋼板８１に対するこれらの形成後の図９の（ａ）及び図１０の（ａ）に示すフランジプレート素材１１１に対して、その長手方向Ａの中央１１２でプレス切断又はレーザ切断等を行い、図９及び図１０の（ｂ）に示す二枚のフランジプレート１１３を形成する。斯かる二枚のフランジプレート１１３の夫々は、梁４の一端部５のフランジプレート１１又は１２として用いる。 First, a long rectangular steel plate 81 shown in FIG. 7 which is a material of the flange plates 11 and 12 is prepared, and the steel plate 81 is rotated in the R1 direction about an axis 83 of a rolling mill 82 shown in FIG. Repeated passage between a pair of rollers 84 and 85 for rolling in the direction B and a pair of rollers 87 and 88 for rolling in the R2 direction about the axis 86 and rolling in the thickness direction (perpendicular to the plane of FIG. 8) In the direction C (see FIG. 12), and correspond to one end 21, the notches 24 and 25, the middle part 26 and the other end 27 of each of the flange plates 11 and 12 in each of the repeated passages. One end portion 91, notches 92 and 93, intermediate portion 94 and other end portion 95 are formed by pressing the annular surfaces 96 and 97 of the pair of rollers 84 and 85 against the outer edges 98 and 99 of the steel plate 81 in the width direction B. As described above, the pair of rollers 84 and 85 are moved away from and close to each other in the width direction B, while the rollers 87 and 88 pass through portions other than the intermediate portion 101 of the steel plate 81 in the longitudinal direction A between the pair of rollers 87 and 88. The roller 88 is moved closer in the thickness direction T, which is a direction orthogonal to the longitudinal direction A, so that the cylindrical surfaces 102 and 103 of the pair of rollers 87 and 88 respectively become the surfaces 104 and 105 of the steel plate 81, respectively. When the steel plate 81 passes through the intermediate portion 101 in the longitudinal direction A of the steel plate 81 between the pair of rollers 87 and 88, a bulge 106 corresponding to the flange plate bulge 23 is formed on one surface 105 of the steel plate 81. The roller 88 is separated from the roller 87 in the thickness direction T so that the cylindrical surfaces 102 and 103 of the pair of rollers 87 and 88 are made of steel, respectively. 9 are pressed against the surfaces 104 and 105, respectively, of the flange 81, and the flange plate material 111 shown in FIGS. Press cutting or laser cutting is performed at the center 112 in the direction A to form two flange plates 113 shown in FIGS. 9 and 10B. Each of the two flange plates 113 is used as the flange plate 11 or 12 at one end 5 of the beam 4.
　また、図７に示す鋼板８１と同様の長尺矩形の鋼板をウェブプレート１４の素材として準備し、斯かる長尺矩形の鋼板を、鋼板８１と同様にして図８に示す圧延機８２の一対のローラ８４及び８５並びに一対のローラ８７及び８８間に繰り返し通過させ、この繰り返しの通過の夫々において、一対のローラ８４及び８５の幅方向Ｂに関しての位置を一定に保持して一対のローラ８４及び８５の円環状面９６及び９７のウェブプレート１４の素材である鋼板の幅方向Ｂの両縁への押圧接触を維持させる一方、ウェブプレート１４の素材である鋼板の長手方向の中間部以外の部位の一対のローラ８７及び８８間の通過に際しては、ローラ８７とローラ８８とを厚み方向Ｔに関して互いに接近させ一対のローラ８７及び８８の円筒状面１０２及び１０３の夫々をウェブプレート１４の素材である鋼板の両面の夫々に押圧接触させると共に一対のローラ８７及び８８間の当該鋼板の長手方向の中間部の通過に際しては、ウェブプレート１４のウェブプレート膨出部３３に相当する膨出部１２１を当該鋼板の両面に形成すべく、ローラ８７及び８８を厚み方向Ｔに関して相互に離間させて一対のローラ８７及び８８の円筒状面１０２及び１０３の夫々を当該鋼板の両面の夫々に押圧接触させ、圧延機８２によるウェブプレート１４の素材である鋼板に対する膨出部１２１の形成後の図１１の（ａ）に示すウェブプレート素材１２２に対して、その長手方向Ａの中央１２３でプレス切断を行い、図１１の（ｂ）に示す二枚のウェブプレート１２４を形成する。斯かる二枚のウェブプレート１２４の夫々は、梁４の一端部５のウェブプレート１４として用いる。 In addition, a long rectangular steel plate similar to the steel plate 81 shown in FIG. 7 is prepared as a material of the web plate 14, and the long rectangular steel plate is made into a pair of rolling mills 82 shown in FIG. Of the pair of rollers 84 and 85 and the pair of rollers 87 and 88. In each of the repeated passages, the position of the pair of rollers 84 and 85 in the width direction B is kept constant, and the pair of rollers 84 and 85 While maintaining the pressing contact of the annular surfaces 96 and 97 of 85 to both edges in the width direction B of the steel plate as the material of the web plate 14, portions other than the middle portion in the longitudinal direction of the steel plate as the material of the web plate 14 When passing between the pair of rollers 87 and 88, the rollers 87 and 88 are brought closer to each other in the thickness direction T, and the cylindrical surfaces 102 and No. 03 is brought into press contact with both sides of the steel plate as a material of the web plate 14, and when the steel plate passes between the pair of rollers 87 and 88 in the longitudinal middle portion of the steel plate, the web plate swells. In order to form the bulging portion 121 corresponding to the portion 33 on both surfaces of the steel plate, the rollers 87 and 88 are separated from each other in the thickness direction T, and the cylindrical surfaces 102 and 103 of the pair of rollers 87 and 88 are respectively formed. The web plate material 122 shown in FIG. 11A after the swelling portion 121 is formed on the steel plate, which is the material of the web plate 14 by the rolling mill 82, is brought into press contact with both surfaces of the steel plate. Press cutting is performed at the center 123 of A, and two web plates 124 shown in FIG. 11B are formed. Each of the two web plates 124 is used as the web plate 14 at one end 5 of the beam 4.
　以上のようにして形成されたフランジプレート１１３とウェブプレート１２４とは、互いに溶接されて梁４の一端部５として組み立てられる。 フ ラ ン ジ The flange plate 113 and the web plate 124 formed as described above are welded to each other and assembled as one end 5 of the beam 4.
　ところで、図８に示す圧延機８２を用いたフランジプレート１１及び１２の製造では、円環状面９６及び９７を夫々有した一対のローラ８４及び８５を用いて一端部９１、切欠９２及び９３、中間部９４及び他端部９５を形成したが、斯かる一対のローラ８４及び８５に代えて、図１２に示すような環状面１３１及び１３２の夫々を有した一対のローラ１３３及び１３４を用いてもよく、この場合、環状面１３１及び１３２の夫々は、展開した場合において図９の（ａ）に示すフランジプレート素材１１１の両縁の面１３５及び１３６の形状に一致する形状を有しており、一対のローラ８４及び８５と同様に、幅方向Ｂにおける一対のローラ１３３及び１３４間には、フランジプレート１１及び１２の素材である図７に示す長尺矩形の鋼板８１が方向Ｃに繰り返し通過されるようになっており、鋼板８１の方向Ｃの繰り返し通過において、一対のローラ１３３及び１３４は、軸心８３を中心としてＲ１方向に回転されると共に互いに幅方向Ｂにおいて接近されるようになっている。 By the way, in the production of the flange plates 11 and 12 using the rolling mill 82 shown in FIG. 8, one end portion 91, the notches 92 and 93, and the intermediate portion are formed by using a pair of rollers 84 and 85 having annular surfaces 96 and 97, respectively. Although the portion 94 and the other end portion 95 are formed, a pair of rollers 133 and 134 having annular surfaces 131 and 132 as shown in FIG. 12 may be used instead of the pair of rollers 84 and 85. In this case, each of the annular surfaces 131 and 132 has a shape corresponding to the shape of the surfaces 135 and 136 on both edges of the flange plate material 111 shown in FIG. Like the pair of rollers 84 and 85, between the pair of rollers 133 and 134 in the width direction B, a long rectangular steel plate shown in FIG. 1 is repeatedly passed in the direction C. In the repeated passage of the steel plate 81 in the direction C, the pair of rollers 133 and 134 are rotated about the axis 83 in the R1 direction, and are mutually moved in the width direction B. Is to be approached.
　以上の梁４の一端部５の製造方法は、フランジプレート１１３とウェブプレート１２４とを個別に形成し、これら個別に形成されたフランジプレート１１３とウェブプレート１２４とを互いに溶接して梁４の一端部５とを得るようにしているが、これに代えて、図１３に示す一対のフランジプレート１４１とウェブプレート１４２とを具備した梁４用のＨ形鋼素材としてのＨ形鋼１４３を梁４の一端部５の素材として準備し、Ｈ形鋼１４３から梁４の一端部５を製造してもよい。 The above-described method of manufacturing the one end 5 of the beam 4 is such that the flange plate 113 and the web plate 124 are separately formed, and the individually formed flange plate 113 and web plate 124 are welded to each other. In this case, the H-shaped steel 143 as the H-shaped steel material for the beam 4 including the pair of flange plates 141 and the web plate 142 shown in FIG. Of the beam 4 may be prepared from the H-shaped steel 143.
　Ｈ形鋼１４３から梁４の一端部５を製造する場合には、例えば図１４及び図１５に示すような幅可変圧延機１５１を用いる。幅可変圧延機１５１は、一方のフランジプレート１４１の外面１５２に押圧接触する円筒状の外周面１５３を有すると共に軸心１５４を中心としてＲ１方向に回転する竪ロール１５５と、他方のフランジプレート１４１の外面１６２に押圧接触する円筒状の外周面１６３を有すると共に軸心１６４を中心としてＲ１方向に回転する竪ロール１６５と、一方のフランジプレート１４１のウェブプレート１４２により幅方向Ｂにおいて分断された一方の内面１７１に押圧接触する円環状側面１７２及びウェブプレート１４２の一方の側面１７３に押圧接触する円筒状の外周面１７４を夫々有すると共に軸心１７５を中心としてＲ２方向に回転する水平ロール１７６と、他方のフランジプレート１４１のウェブプレート１４２により幅方向Ｂにおいて分断された一方の内面１８１に押圧接触する円環状側面１８２及びウェブプレート１４２の一方の側面１７３に押圧接触する円筒状の外周面１８４を夫々有すると共に水平ロール１７６の軸心１７５と同心の軸心１８５を中心として水平ロール１７６と共にＲ２方向に回転する水平ロール１８６と、一方のフランジプレート１４１のウェブプレート１４２により幅方向Ｂにおいて分断された他方の内面１９１に押圧接触する円環状側面１９２及びウェブプレート１４２の他方の側面１９３に押圧接触する円筒状の外周面１９４を夫々有すると共に軸心１９５を中心としてＲ２方向に回転する水平ロール１９６と、他方のフランジプレート１４１のウェブプレート１４２により幅方向Ｂにおいて分断された他方の内面２０１に押圧接触する円環状側面２０２及びウェブプレート１４２の他方の側面１９３に押圧接触する円筒状の外周面２０４を夫々有すると共に水平ロール１９６の軸心１９５と同心の軸心２０５を中心として水平ロール１９６と共にＲ２方向に回転する水平ロール２０６とを具備しており、水平ロール１７６及び１８６は、円環状側面１７２と円環状側面１８２とがウェブプレート１４２の幅方向Ｄにおける間隔Ｌ１と間隔Ｌ１よりも狭い間隔Ｌ２（Ｌ１＞Ｌ２）となるように当該幅方向Ｄにおいて位置変化可能に並置されており、水平ロール１９６及び２０６もまた、円環状側面１９２と円環状側面２０２とが幅方向Ｄにおける間隔Ｌ１と間隔Ｌ１よりも狭い間隔Ｌ２（Ｌ１＞Ｌ２）となるように当該幅方向Ｄにおいて位置変化可能に並置されており、加えて、水平ロール１７６及び１８６と水平ロール１９６及び２０６とは、厚み方向Ｔに関して接近、離反自在となるように当該厚み方向Ｔにおいて位置変化可能に並置されている。 When manufacturing the one end 5 of the beam 4 from the H-section steel 143, for example, a variable width rolling mill 151 as shown in FIGS. 14 and 15 is used. The variable width rolling mill 151 includes a vertical roll 155 having a cylindrical outer peripheral surface 153 that is in pressure contact with the outer surface 152 of one flange plate 141 and rotating in the R1 direction about an axis 154, and the other flange plate 141. A vertical roll 165 having a cylindrical outer peripheral surface 163 that is in pressure contact with the outer surface 162 and rotating in the R1 direction about an axis 164, and one of the flange plates 141 divided in the width direction B by a web plate 142 of one flange plate 141. A horizontal roll 176 that has an annular side surface 172 that presses and contacts the inner surface 171 and a cylindrical outer peripheral surface 174 that presses and contacts one side surface 173 of the web plate 142, and that rotates in the R2 direction about an axis 175; In the width direction B by the web plate 142 of the flange plate 141 of FIG. It has an annular side surface 182 that presses and contacts one of the divided inner surfaces 181 and a cylindrical outer peripheral surface 184 that presses and contacts one side surface 173 of the web plate 142, and is coaxial with the axis 175 of the horizontal roll 176. A horizontal roll 186 that rotates in the R2 direction together with the horizontal roll 176 around the center 185; and an annular side surface 192 and a web plate that press and contact the other inner surface 191 that is divided in the width direction B by the web plate 142 of one flange plate 141. In the width direction B, a horizontal roll 196 that has a cylindrical outer peripheral surface 194 that presses and contacts the other side surface 193 of the 142 and rotates in the R2 direction about the axis 195 and the web plate 142 of the other flange plate 141. A circle that comes into pressure contact with the other divided inner surface 201 And has a cylindrical outer peripheral surface 204 that presses and contacts the other side surface 193 of the web plate 142 and the other side surface 193 of the web plate 142, and rotates in the R2 direction together with the horizontal roll 196 around the axis 205 concentric with the axis 195 of the horizontal roll 196. The horizontal rolls 176 and 186 have an annular side surface 172 and an annular side surface 182 in the width direction D of the web plate 142, and a distance L2 (L1>) smaller than the distance L1. L2), the horizontal rolls 196 and 206 are also arranged side by side so that the position can be changed in the width direction D. It is juxtaposed so that the position can be changed in the width direction D so as to be a narrow interval L2 (L1> L2). The flat rolls 176 and 186 and the horizontal rolls 196 and 206 are juxtaposed so that the position can be changed in the thickness direction T so that they can approach and separate from each other in the thickness direction T.
　斯かる幅可変圧延機１５１でもってＨ形鋼１４３から梁４の一端部５を製造する場合には、竪ロール１５５及び竪ロール１６５と水平ロール１７６及び１８６並びに水平ロール１９６及び２０６との間にＨ形鋼１４３を繰り返して挿通して、この繰り返しの挿通の夫々で、Ｈ形鋼１４３の長手方向Ａの中間部２１１以外の部位の通過に際しては、図１４に示すように、円環状側面１７２と円環状側面１８２との幅方向Ｄの間隔が、そして、円環状側面１９２と円環状側面２０２との幅方向Ｄの間隔が夫々間隔Ｌ１となるように、水平ロール１７６及び１８６並びに水平ロール１９６及び２０６の夫々を幅方向Ｄにおいて互いに離間させると共に、外周面１７４及び１８４と外周面１９４及び２０４との厚み方向Ｔにおける隙間が狭くなるように、水平ロール１７６及び１８６と水平ロール１９６及び２０６を厚み方向Ｔにおいて互いに接近させて、Ｈ形鋼１４３の長手方向Ａの中間部２１１の通過に際しては、図１５に示すように、円環状側面１７２と円環状側面１８２との幅方向Ｄの間隔が、そして、円環状側面１９２と円環状側面２０２との幅方向Ｄの間隔が夫々間隔Ｌ２となるように、水平ロール１７６及び１８６並びに水平ロール１９６及び２０６の夫々を幅方向Ｄにおいて互いに接近させると共に外周面１７４及び１８４と外周面１９４及び２０４との厚み方向Ｔにおける隙間が広くなるように、水平ロール１７６及び１８６と水平ロール１９６及び２０６を厚み方向Ｔにおいて互いに離間させて、図１６に示すように、フランジプレート膨出部２３に相当する膨出部２１２を内面１７１、１８１、１９１及び２０１の夫々に形成する。なお、ウェブプレート膨出部３３に相当する膨出部２１３は、膨出部１２１の形成と同様にして図８に示す圧延機８２と同等の圧延機により両フランジプレート１４１から幅方向Ｄにおいて離れた側面１７３及び１９３の夫々の中央部に予め形成されている。 When the one end portion 5 of the beam 4 is manufactured from the H-section steel 143 by such a variable width rolling mill 151, the vertical rolls 155 and 165 are interposed between the horizontal rolls 176 and 186 and the horizontal rolls 196 and 206. The H-shaped steel 143 is repeatedly inserted, and in each of the repeated insertions, when the H-shaped steel 143 passes through a portion other than the intermediate portion 211 in the longitudinal direction A, as shown in FIG. The horizontal rolls 176 and 186 and the horizontal rolls 196 are arranged such that the distance between the annular side surface 182 and the annular side surface 182 in the width direction D is equal to the distance between the annular side surface 192 and the annular side surface 202 in the width direction D. And 206 are separated from each other in the width direction D, and the gap in the thickness direction T between the outer peripheral surfaces 174 and 184 and the outer peripheral surfaces 194 and 204 is reduced. The horizontal rolls 176 and 186 and the horizontal rolls 196 and 206 are moved closer to each other in the thickness direction T, and when the H-shaped steel 143 passes through the intermediate portion 211 in the longitudinal direction A, as shown in FIG. The horizontal rolls 176 and 186 and the horizontal rolls are arranged such that the interval in the width direction D between the annular side surface 172 and the annular side surface 182 and the interval in the width direction D between the annular side surface 192 and the annular side surface 202 are respectively equal to the interval L2. The horizontal rolls 176 and 186 and the horizontal rolls 196 and 206 are moved so that each of the horizontal rolls 196 and 206 approaches each other in the width direction D and the gap in the thickness direction T between the outer peripheral surfaces 174 and 184 and the outer peripheral surfaces 194 and 204 increases. As shown in FIG. 16, the bulging portions corresponding to the flange plate bulging portions 23 are separated from each other in the thickness direction T. 12 to form the people each of inner surfaces 171, 181 and 191 and 201. The bulging portion 213 corresponding to the web plate bulging portion 33 is separated from the flange plates 141 in the width direction D by a rolling mill equivalent to the rolling mill 82 shown in FIG. Each of the side faces 173 and 193 is formed in advance at the center of the side face.
　膨出部２１２及び２１２が形成された図１６に示すＨ形鋼１４３のフランジプレート１４１の夫々に対して、例えば、図８に示す一対のローラ８４及び８５のフランジプレート１４１の夫々の両縁２１５及び２１６への押圧接触による繰り返し圧延を施すことにより、一端部２１、切欠２４及び２５、中間部２６及び他端部２７の夫々に相当する部位を形成し、斯かる部位が形成されたＨ形鋼１４３をその長手方向Ａにおける中央２１７から切断することにより、梁４の一端部５を得ることができる。 For example, with respect to each of the flange plates 141 of the H-section steel 143 shown in FIG. 16 in which the bulging portions 212 and 212 are formed, for example, both edges 215 of the flange plates 141 of the pair of rollers 84 and 85 shown in FIG. And 216 are repeatedly rolled by press contact to form portions corresponding to the one end 21, the notches 24 and 25, the intermediate portion 26, and the other end 27, respectively, and the H-shape in which such portions are formed. One end 5 of beam 4 can be obtained by cutting steel 143 from its center 217 in the longitudinal direction A.
　なお、図１４に示す幅可変圧延機１５１でもって膨出部２１２を形成すると、膨出部２１２の夫々がウェブプレート１４２に向かって末広がり状となるが、水平ロール１７６、水平ロール１８６、水平ロール１９６及び水平ロール２０６に代えて、例えば、図１７に示すような、竪ロール１５５及び竪ロール１６５に加えて、一方のフランジプレート１４１の一方の内面１７１に押圧接触する截頭円錐状外周面２２１及びウェブプレート１４２の一方の側面１７３に押圧接触する截頭円錐状外周面２２２を有すると共に内面１７１及び側面１７３に対して９０°の角度をもって交差する軸心２２３を中心としてＲ３方向に回転する傾斜ロール２２４と、他方のフランジプレート１４１の一方の内面１８１に押圧接触する截頭円錐状外周面２３１及びウェブプレート１４２の一方の側面１７３に押圧接触する截頭円錐状外周面２３２を有すると共に内面１８１及び側面１７３に対して９０°の角度をもって交差する軸心２３３を中心としてＲ３方向に回転する傾斜ロール２３４と、一方のフランジプレート１４１の他方の内面１９１に押圧接触する截頭円錐状外周面２４１及びウェブプレート１４２の他方の側面１９３に押圧接触する截頭円錐状外周面２４２を有すると共に内面１９１及び側面１９３に対して９０°の角度をもって交差する軸心２４３を中心としてＲ３方向に回転する傾斜ロール２４４と、他方のフランジプレート１４１の他方の内面２０１に押圧接触する截頭円錐状外周面２５１及びウェブプレート１４２の他方の側面１９３に押圧接触する截頭円錐状外周面２５２を有すると共に内面２０１及び側面１９３に対して９０°の角度をもって交差する軸心２５３を中心としてＲ３方向に回転する傾斜ロール２５４とを具備しており、傾斜ロール２２４は、軸心２２３に直交すると共に内面１７１及び側面１７３に対して９０°の角度をもって交差する方向Ｅに、傾斜ロール２３４は、軸心２３３に直交すると共に内面１８１及び側面１７３に対して９０°の角度をもって交差する方向Ｆに、傾斜ロール２４４は、軸心２４３に直交すると共に内面１９１及び側面１９３に対して９０°の角度をもって交差する方向Ｇに、そして、傾斜ロール２５４は、軸心２５３に直交すると共に内面２０１及び側面１９３に対して９０°の角度をもって交差する方向Ｈに夫々移動自在である幅可変圧延機２５６を用いて、Ｈ形鋼１４３の長手方向Ａの中間部２１１以外の部位の通過に際しては、傾斜ロール２２４を、内面１７１での一方のフランジプレート１４１が截頭円錐状外周面２２１で、側面１７３でのウェブプレート１４２が截頭円錐状外周面２２２で夫々圧延されるように、方向Ｅにおいて内面１７１及び側面１７３に向かって移動させ、傾斜ロール２３４を、内面１８１での他方のフランジプレート１４１が截頭円錐状外周面２３１で、側面１７３でのウェブプレート１４２が截頭円錐状外周面２３２で圧延されるように、方向Ｆにおいて内面１８１及び側面１７３に向かって移動させ、傾斜ロール２４４を、内面１９１での一方のフランジプレート１４１が截頭円錐状外周面２４１で、側面１９３でのウェブプレート１４２が截頭円錐状外周面２４２で夫々圧延されるように、方向Ｇにおいて内面１９１及び側面１９３に向かって移動させ、傾斜ロール２５４を、内面２０１での他方のフランジプレート１４１が截頭円錐状外周面２５１で、側面１９３でのウェブプレート１４２が截頭円錐状外周面２５２で夫々圧延されるように、方向Ｈにおいて内面２０１及び側面１９３に向かって移動させ、Ｈ形鋼１４３の長手方向Ａの中間部２１１の通過に際しては、斯かる圧延を解除するように、傾斜ロール２２４を方向Ｅにおいて、傾斜ロール２３４を方向Ｆにおいて、傾斜ロール２４４を方向Ｇにおいて、そして、傾斜ロール２５４を方向Ｈにおいて夫々前記と逆の方向に移動させて、膨出部２１２を形成することにより、膨出部２１２の末広がり状を解消し得る。 When the bulging portion 212 is formed by the variable width rolling mill 151 shown in FIG. 14, each of the bulging portions 212 expands toward the web plate 142, but the horizontal roll 176, the horizontal roll 186, and the horizontal roll Instead of the 196 and the horizontal roll 206, for example, as shown in FIG. 17, in addition to a vertical roll 155 and a vertical roll 165, a frusto-conical outer peripheral surface 221 that is in pressure contact with one inner surface 171 of one flange plate 141 And an inclined surface having a frusto-conical outer peripheral surface 222 that comes into pressure contact with one side surface 173 of the web plate 142 and rotates in the R3 direction about an axis 223 that intersects the inner surface 171 and the side surface 173 at an angle of 90 °. Roll 224 and frusto-conical outer peripheral surface 2 in pressure contact with one inner surface 181 of the other flange plate 141 1 and a frusto-conical outer peripheral surface 232 that presses against one side surface 173 of the web plate 142, and rotates in the R3 direction about an axis 233 that intersects the inner surface 181 and the side surface 173 at an angle of 90 °. An inclined roll 234 and a frusto-conical outer peripheral surface 241 that presses and contacts the other inner surface 191 of one flange plate 141 and a frusto-conical outer peripheral surface 242 that presses and contacts the other side surface 193 of the web plate 142. An inclined roll 244 that rotates in the R3 direction about an axis 243 that intersects the 191 and the side surface 193 at an angle of 90 °, and a frusto-conical outer peripheral surface that presses and contacts the other inner surface 201 of the other flange plate 141. 251 and the frusto-conical outer peripheral surface 25 that is in pressure contact with the other side surface 193 of the web plate 142. And an inclined roll 254 that rotates in the R3 direction about an axis 253 that intersects the inner surface 201 and the side surface 193 at an angle of 90 ° with respect to the inner surface 201 and the side surface 193, and the inclined roll 224 is orthogonal to the axis 223. In the direction E intersecting with the inner surface 171 and the side surface 173 at an angle of 90 °, the inclined roll 234 is orthogonal to the axis 233 and in the direction F intersecting with the inner surface 181 and the side surface 173 at an angle of 90 °. The inclined roll 244 is orthogonal to the axis 243 and intersects the inner surface 191 and the side surface 193 at an angle of 90 °, and the inclined roll 254 is orthogonal to the axis 253 and the inner surface 201 and the side surface. Using a variable width rolling mill 256 which is movable in a direction H intersecting at an angle of 90 ° with respect to 193, an H-shape is used. When passing through a portion other than the intermediate portion 211 in the longitudinal direction A of the 143, the inclined roll 224 is cut by the one flange plate 141 on the inner surface 171 by the truncated conical outer peripheral surface 221 and the web plate 142 by the side surface 173. The inner roll 234 is moved in the direction E toward the inner surface 171 and the side surface 173 so as to be rolled on the frustoconical outer peripheral surface 222, respectively, and the other flange plate 141 on the inner surface 181 is moved by the frustoconical outer peripheral surface 231. Then, the web plate 142 on the side surface 173 is moved toward the inner surface 181 and the side surface 173 in the direction F so that the web plate 142 is rolled on the frustoconical outer peripheral surface 232, and the inclined roll 244 is moved to the one flange on the inner surface 191. The plate 141 has a frustoconical outer peripheral surface 241 and the web plate 142 on the side surface 193 has a frustoconical outer peripheral surface 242. Moved in the direction G toward the inner surface 191 and the side surface 193 so as to be rolled, respectively, and the inclined roll 254 is moved so that the other flange plate 141 on the inner surface 201 is the frustoconical outer surface 251 and the web on the side surface 193. The plate 142 is moved in the direction H toward the inner surface 201 and the side surface 193 so as to be rolled on the frustoconical outer peripheral surface 252, respectively. In order to cancel the rolling, the inclined roll 224 is moved in the direction E, the inclined roll 234 is moved in the direction F, the inclined roll 244 is moved in the direction G, and the inclined roll 254 is moved in the direction H in the opposite direction. Thus, by forming the bulging portion 212, the bulging portion 212 can be prevented from diverging.
　ところで、図１４に示す幅可変圧延機１５１及び図１７に示す幅可変圧延機２５６では、フランジプレート１４１の夫々に対して、例えば、図８に示す一対のローラ８４及び８５のフランジプレート１４１の夫々の両縁２１５及び２１６への押圧接触による繰り返し圧延を施すことにより、一端部２１、切欠２４及び２５、中間部２６及び他端部２７の夫々に相当する部位を形成し、斯かる部位が形成されたＨ形鋼１４３をその長手方向Ａにおける中央２１７から切断することにより、梁４の一端部５を得ることができるが、図１８に示す孔型深さ可変機構を有するエッジャーロール機２６６を用いて、図１６に示すＨ形鋼１４３において、フランジプレート１４１の夫々にフランジプレート膨出部２３に相当する膨出部２１２、ウェブプレート１４２の側面１７３及び１９３の夫々にウェブプレート膨出部３３に相当する膨出部２１３に加えて、フランジプレート１４１の夫々に一端部２１、切欠２４及び２５、中間部２６及び他端部２７の夫々に相当する部位を形成してもよい。 Incidentally, in the variable width rolling mill 151 shown in FIG. 14 and the variable width rolling mill 256 shown in FIG. 17, for example, each of the flange plates 141 of the pair of rollers 84 and 85 shown in FIG. By repeatedly performing rolling by pressing and contacting both edges 215 and 216, portions corresponding to one end portion 21, notches 24 and 25, intermediate portion 26 and other end portion 27 are formed, and such a portion is formed. One end 5 of the beam 4 can be obtained by cutting the formed H-shaped steel 143 from the center 217 in the longitudinal direction A, and an edger roll machine 266 having a hole-type variable depth mechanism shown in FIG. In the H-section steel 143 shown in FIG. 16, a bulging portion 212 corresponding to the flange plate bulging portion 23 and a web In addition to the bulging portion 213 corresponding to the web plate bulging portion 33 on each of the side surfaces 173 and 193 of the plate 142, one end portion 21, the notches 24 and 25, the middle portion 26 and the other end portion are provided on each of the flange plates 141. You may form the site | part corresponding to each of 27.
　エッジャーロール機２６６は、軸心２７１を中心としてＲ２方向に回転される回転軸２７２と、回転軸２７２に固着されていると共にＨ形鋼１４３の一対のフランジプレート１４１の夫々の縁２１５の夫々に押圧接触する円筒状外周面２７３を有する一方の一対のフランジエッジング用水平ロール２７４と、一方及び他方のフランジプレート１４１の一方の内面１７１及び１８１に押圧接触する円環状側面２７５及びウェブプレート１４２の一方の側面１７３に押圧接触する円筒状外周面２７６を夫々有する一方の一対のウェブ拘束リングロール２７７と、回転軸２７２及びウェブ拘束リングロール２７７の夫々の間に軸心２７１に対して偏心した軸心２７８をもって配されていると共に円環状の内周面２７９では円筒状内周軸受を介して回転軸２７２に軸心２７１を中心として回転自在となるように装着されている一方、円環状の外周面２８０には円筒状外周軸受を介してウェブ拘束リングロール２７７が軸心２７８を中心として回転自在となるように装着されている一対の偏心中間リングロール２８１と、軸心２９１を中心としてＲ２方向に回転される回転軸２９２と、回転軸２９２に固着されていると共にＨ形鋼１４３の一対のフランジプレート１４１の夫々の縁２１６の夫々に押圧接触する円筒状外周面２９３を有する他方の一対のフランジエッジング用水平ロール２９４と、一方及び他方のフランジプレート１４１の他方の内面１９１及び２０１に押圧接触する円環状側面２９５及びウェブプレート１４２の他方の側面１９３に押圧接触する円筒状外周面２９６を夫々有する他方の一対のウェブ拘束リングロール２９７と、回転軸２９２及びウェブ拘束リングロール２９７の夫々の間に軸心２９１に対して偏心した軸心２９８をもって配されていると共に円環状の内周面２９９では円筒状内周軸受を介して回転軸２９２に軸心２９１を中心として回転自在となるように装着されている一方、円環状の外周面３００には円筒状外周軸受を介してウェブ拘束リングロール２９７が軸心２９８を中心として回転自在となるように装着されている一対の偏心中間リングロール３０１と、一対の偏心中間リングロール２８１及び３０１の夫々の偏芯位置を設定する図示しない偏芯位置設定装置とを具備しており、一方のフランジエッジング用水平ロール２７４と一方のウェブ拘束リングロール２７７とは、ウェブプレート１４２の幅方向Ｄにおいて互いに接近、離反自在に回転軸２７２に装着されており、他方のフランジエッジング用水平ロール２９４と他方のウェブ拘束リングロール２９７もまた、ウェブプレート１４２の幅方向Ｄにおいて互いに接近、離反自在に回転軸２９２に装着されている。 The edger roll machine 266 includes a rotating shaft 272 that is rotated in the R2 direction about an axis 271, and respective edges 215 of a pair of flange plates 141 of the H-shaped steel 143 that are fixed to the rotating shaft 272. A pair of flanged horizontal rolls 274 having a cylindrical outer peripheral surface 273 that comes into pressure contact with the annular side surface 275 and the web plate 142 that come into pressure contact with one inner surface 171 and 181 of one and the other flange plate 141. A pair of web restraining ring rolls 277 each having a cylindrical outer peripheral surface 276 that is in pressure contact with one side face 173, and an axis eccentric with respect to the axis 271 between each of the rotating shaft 272 and the web restraining ring roll 277. The inner circumferential surface 279 is arranged with a core 278 and is formed on the annular inner circumferential surface 279 via a cylindrical inner circumferential bearing. The web restraining ring roll 277 rotates around the shaft 278 on the annular outer circumferential surface 280 via a cylindrical outer circumferential bearing, while being mounted on the rolling shaft 272 so as to be rotatable about the shaft 271. A pair of eccentric intermediate ring rolls 281 mounted to be freely movable, a rotating shaft 292 rotated in the R2 direction about the axis 291, and a pair of H-shaped steel 143 fixed to the rotating shaft 292. The other pair of flange edging horizontal rolls 294 having a cylindrical outer peripheral surface 293 that comes into pressure contact with each of the respective edges 216 of the flange plate 141, and the other inner surfaces 191 and 201 of one and the other flange plates 141 are pressed. The cylindrical outer peripheral surface 296 that is in pressure contact with the annular side surface 295 that comes into contact with the other side surface 193 of the web plate 142 is respectively formed. And a pair of web constraining ring rolls 297, and an axis 298 eccentric to the axis 291 between the rotating shaft 292 and the web constraining ring roll 297. Is mounted on the rotating shaft 292 via a cylindrical inner peripheral bearing so as to be rotatable about the axis 291, while the annular outer peripheral surface 300 is provided with a web restraining ring roll via a cylindrical outer peripheral bearing. 297 is a pair of eccentric intermediate ring rolls 301 mounted so as to be rotatable about an axis 298, and an eccentric position (not shown) for setting the respective eccentric positions of the pair of eccentric intermediate ring rolls 281 and 301. Setting device, one of the horizontal rolls 274 for flange edging and one of the web restraining ring rolls 277 are provided with a web plate. 142 are attached to the rotating shaft 272 so as to approach and separate from each other in the width direction D, and the other horizontal roll 294 for flange edging and the other web restraining ring roll 297 also approach each other in the width direction D of the web plate 142. , Which are detachably mounted on the rotating shaft 292.
　エッジャーロール機２６６は、回転軸２７２及び２９２のＲ２方向の回転で、一対のフランジエッジング用水平ロール２７４及び一対のウェブ拘束リングロール２７７と一対のフランジエッジング用水平ロール２９４及び一対のウェブ拘束リングロール２９７との間に挿入されたＨ形鋼１４３を圧延しつつ方向Ｃに移動させ、この圧延移動で、水平ロール１７６及び１８６並びに１９６及び２０６と同様に、一対のウェブ拘束リングロール２７７及び一対のウェブ拘束リングロール２９７により一方のフランジプレート１４１の内面１７１及び１９１並びに他方のフランジプレート１４１の内面１８１及び２０１に膨出部２１２を形成すると共に必要によりウェブプレート１４２の一方及び他方の側面１７３及び１９３に膨出部２１３を夫々形成する一方、偏芯位置設定装置により設定された偏心位置での一対のフランジエッジング用水平ロール２７４及び２９４による一方及び他方のフランジプレート１４１の夫々の両縁２１５及び２１６に対する圧延で一端部２１、切欠２４及び２５、中間部２６及び他端部２７の夫々に相当する部位を当該一方及び他方のフランジプレート１４１の夫々に形成するようになっている。 The edger roll machine 266 rotates the rotating shafts 272 and 292 in the R2 direction to rotate the pair of flange edging horizontal rolls 274 and the pair of web restraining ring rolls 277 and the pair of flange edging horizontal rolls 294 and the pair of web restraining rings. The H-section steel 143 inserted between the roll 297 and the roll 297 is moved in the direction C while being rolled, and this rolling movement causes a pair of web restraining ring rolls 277 and a pair of The web restraining ring roll 297 forms bulging portions 212 on the inner surfaces 171 and 191 of one flange plate 141 and the inner surfaces 181 and 201 of the other flange plate 141 and, if necessary, one and the other side surfaces 173 and 173 of the web plate 142. Husband 213 in 193 On the other hand, one end 21 is formed by rolling a pair of flange edging horizontal rolls 274 and 294 at the eccentric position set by the eccentric position setting device on both edges 215 and 216 of the one and other flange plates 141. Portions corresponding to the notches 24 and 25, the intermediate portion 26, and the other end portion 27 are formed in the one and other flange plates 141, respectively.
　なお、図２１に示すような、軸心３１１を中心としてＲ２方向に回転すると共に一対のフランジプレート１４１の縁２１５の夫々に押圧接触する水平ロール３１２と、軸心３２１を中心としてＲ２方向に回転すると共に一対のフランジプレート１４１の縁２１６の夫々に押圧接触する水平ロール３２２と、軸心３３１を中心としてＲ２方向に回転すると共にウェブプレート１４２の一方の側面１７３に押圧接触する円筒状外周面３３２を夫々有する一方の一対のウェブ局所圧延ロール３３３と、軸心３４１を中心としてＲ２方向に回転すると共にウェブプレート１４２の他方の側面１９３に押圧接触する円筒状外周面３４２を夫々有する他方の一対のウェブ局所圧延ロール３４３とを具備した圧延機３５１での当該一対のウェブ局所圧延ロール３３３と一対のウェブ局所圧延ロール３４３との協働したウェブプレート１４２に対する圧延でもってウェブプレート膨出部３３に相当する膨出部２１３を単独で予めＨ形鋼１４３のウェブプレート１４２の側面１７３及び１９３の夫々に形成してもよい。 As shown in FIG. 21, a horizontal roll 312 that rotates in the R2 direction about the axis 311 and presses and contacts each of the edges 215 of the pair of flange plates 141, and rotates in the R2 direction about the axis 321. A horizontal roll 322 that presses and contacts each of the edges 216 of the pair of flange plates 141, and a cylindrical outer peripheral surface 332 that rotates in the R2 direction about the axis 331 and presses and contacts one side surface 173 of the web plate 142. And the other pair of web local rolling rolls 333 each having a cylindrical outer peripheral surface 342 that rotates in the R2 direction about the axis 341 and presses and contacts the other side surface 193 of the web plate 142. A pair of web local rolling rolls in a rolling mill 351 having a web local rolling roll 343. The bulging portion 213 corresponding to the web plate bulging portion 33 is independently formed by rolling the web plate 142 in cooperation with the pair of web local rolling rolls 343 and the side surface 173 of the web plate 142 of the H-section steel 143. And 193.
　また、図２２に示すような、前述の一方のフランジプレート１４１の外面１５２に押圧接触する円筒状の外周面１５３を有すると共に軸心１５４を中心としてＲ１方向に回転する竪ロール１５５と他方のフランジプレート１４１の外面１６２に押圧接触する円筒状の外周面１６３を有すると共に軸心１６４を中心としてＲ１方向に回転する竪ロール１６５とに加えて、軸心３５１を中心としてＲ１方向に回転すると共に一方のフランジプレート１４１の一方の内面１７１に押圧接触するフランジ局所圧延ロール３５２と、軸心３６１を中心としてＲ１方向に回転すると共に一方のフランジプレート１４１の他方の内面１９１に押圧接触するフランジ局所圧延ロール３６２と、軸心３７１を中心としてＲ１方向に回転すると共に他方のフランジプレート１４１の一方の内面１８１に押圧接触するフランジ局所圧延ロール３７２と、軸心３８１を中心としてＲ１方向に回転すると共に他方のフランジプレート１４１の他方の内面２０１に押圧接触するフランジ局所圧延ロール３８２とを具備した圧延機３９１での当該竪ロール１５５とフランジ局所圧延ロール３５２及び３６２との協働した一方のフランジプレート１４１に対する圧延でもって、そして、竪ロール１６５とフランジ局所圧延ロール３７２及び３８２との協働した他方のフランジプレート１４１に対する圧延でもってフランジプレート膨出部２３に相当する膨出部２１２を単独で予めＨ形鋼１４３のフランジプレート１４１の内面１７１及び１９１並びに内面１８１及び２０１の夫々に形成してもよい。 Further, as shown in FIG. 22, a vertical roll 155 having a cylindrical outer peripheral surface 153 which comes into press contact with the outer surface 152 of the above-mentioned one flange plate 141 and rotates in the R1 direction about an axis 154 and the other flange. In addition to a vertical roll 165 having a cylindrical outer peripheral surface 163 that is in pressure contact with the outer surface 162 of the plate 141 and rotating in the R1 direction about the axis 164, one side rotates in the R1 direction about the axis 351 and one side. Flange local rolling roll 352 that presses and contacts one inner surface 171 of the flange plate 141, and Flange local rolling roll that rotates in the R1 direction about the axis 361 and presses and contacts the other inner surface 191 of one flange plate 141. 362 and the other franc rotating in the R1 direction about the axis 371. A flange local rolling roll 372 that presses and contacts one inner surface 181 of the plate 141; a flange local rolling roll 382 that rotates in the R1 direction about the axis 381 and presses and contacts the other inner surface 201 of the other flange plate 141; The rolling of the vertical roll 155 and the local flange rolls 372 and 382 with the vertical roll 155 and the local local rolls 372 and 382 of the vertical roll 155 and the local flange rolls 352 and 362 in the rolling mill 391 equipped with The swelling portion 212 corresponding to the flange plate swelling portion 23 by the rolling of the other flange plate 141 in cooperation with the inner surfaces 171 and 191 and the inner surfaces 181 and 201 of the flange plate 141 of the H-section steel 143 alone, respectively. It may be formed.
　なお、本発明の梁４の一端部５は、圧延のみならず、鋳造又は切削によって形成してもよい。 Note that the one end 5 of the beam 4 of the present invention may be formed not only by rolling but also by casting or cutting.
　１　柱梁接合構造
　２　柱面
　３　柱
　４　梁
　５、７　一端部
　６　連結機構
　８　本体部
　１１、１２　フランジプレート
　１３　面
　１４　ウェブプレート
　２１、３１　一端部
　２２　縁部
　２３　フランジプレート膨出部
　２４、２５　切欠
　２６　中間部
　２７、３４　他端部
　２８、３５　ボルト孔
　３２　両面
　３３　ウェブプレート膨出部

　 DESCRIPTION OF SYMBOLS 1 Column-beam joint structure 2 Column surface 3 Column 4 Beam 5, 7 One end 6 Connection mechanism 8 Main body 11, 12 Flange plate 13 Surface 14 Web plate 21, 31 One end 22 Edge 23 Flange plate bulge 24, 25 Notch 26 Intermediate part 27, 34 Other end part 28, 35 Bolt hole 32 Both sides 33 Web plate bulging part

Claims (4)

  1. 　鉛直方向に伸びた柱面を有した柱と水平方向に伸びた梁とを、当該柱の柱面と梁の長手方向の一端部とで互いに接合した柱梁接合構造であって、梁の一端部は、上下のフランジプレートと、この上下のフランジプレートの互いに対面する面に接合されているウェブプレートとを具備しており、上下のフランジプレートの夫々は、長手方向のその一端部に一体的に設けられているフランジプレート膨出部と、このフランジプレート膨出部から長手方向において離れた位置の幅方向の両縁に設けられた少なくとも一つの切欠とを具備しており、上下のフランジプレートの夫々は、フランジプレート膨出部と共にその一端部で柱の柱面に接合されており、ウェブプレートは、長手方向のその一端部に一体的に設けられているウェブプレート膨出部を具備しており、ウェブプレートは、ウェブプレート膨出部と共にその一端部で柱の柱面に接合されている柱梁接合構造。 A beam-column joint structure in which a column having a column surface extending in the vertical direction and a beam extending in the horizontal direction are joined to each other at the column surface of the column and one end in the longitudinal direction of the beam, and one end of the beam is provided. The part comprises upper and lower flange plates and a web plate joined to the facing surfaces of the upper and lower flange plates, each of the upper and lower flange plates being integral with one end thereof in the longitudinal direction. A flange plate swelling portion provided at least one notch provided at both edges in the width direction at a position separated in the longitudinal direction from the flange plate swelling portion, and the upper and lower flange plates Are joined to the pillar surface of the pillar at one end thereof together with the flange plate bulging portion, and the web plate is provided integrally with the web plate bulging portion at one end thereof in the longitudinal direction. And comprising, web plate, beam-column joint structure being joined to the cylindrical surface of the column at one end thereof with the web plate bulging portion.
  2. 　フランジプレート膨出部は、上下のフランジプレートの互いに対面する面に設けられており、ウェブプレート膨出部は、ウェブプレートの一端部の両面に設けられている請求項１に記載の柱梁接合構造。 The beam-to-column connection according to claim 1, wherein the flange plate bulges are provided on surfaces of the upper and lower flange plates facing each other, and the web plate bulges are provided on both surfaces of one end of the web plate. Construction.
  3. 　互いに対面した面を有する上下のフランジプレートとこの上下のフランジプレートの互いに対面した面に接合されているウェブプレートとを具備した梁用のＨ形鋼素材を準備する第一の段階と、Ｈ形鋼素材の上下のフランジプレートの互いに対面する面の夫々に圧延によりフランジプレート膨出部を形成する第二の段階と、フランジプレート膨出部から長手方向において離れたＨ形鋼素材の上下のフランジプレートの幅方向の両縁に切欠きを圧延により形成する第三の段階と、Ｈ形鋼素材のウェブプレートの両面にウェブプレート膨出部を圧延により形成する第四の段階とを具備し、第二、第三及び第四の段階を介して梁用のＨ形鋼素材から柱梁接合構造の梁用のＨ形鋼を製造する方法。 A first step of preparing an H-section steel material for a beam comprising upper and lower flange plates having facing surfaces and a web plate joined to the facing surfaces of the upper and lower flange plates; A second step of forming a flange plate bulge by rolling each of the facing surfaces of the upper and lower flange plates of the steel material, and upper and lower flanges of the H-shaped steel material separated in the longitudinal direction from the flange plate bulge A third step of forming notches on both edges in the width direction of the plate by rolling, and a fourth step of forming web plate bulges on both sides of the web plate of the H-section steel material by rolling, A method of manufacturing an H-beam for a beam of a beam-column joint structure from an H-beam material for a beam through second, third and fourth steps.
  4. 　圧延によりフランジプレート膨出部、切欠き及びウェブプレート膨出部を徐々に形成するべく、第二、第三及び第四の段階を繰り返して行う請求項３に記載のＨ形鋼を製造する方法。
    　     4. The method for manufacturing an H-section steel according to claim 3, wherein the second, third and fourth steps are repeated to gradually form the flange plate bulge, the notch and the web plate bulge by rolling. .
PCT/JP2018/030878 2018-08-21 2018-08-21 Column-beam joint structure and method for manufacturing h-section steel for beam in column-beam joint structure WO2020039510A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1088737A (en) * 1996-09-19 1998-04-07 Taisei Corp Beam member and pillar/beam joint construction for steel structure
JP2017145670A (en) * 2016-02-19 2017-08-24 Ｓｄｒテクノロジー株式会社 Method of manufacturing beam-column joint structure, and beam-column joint structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1088737A (en) * 1996-09-19 1998-04-07 Taisei Corp Beam member and pillar/beam joint construction for steel structure
JP2017145670A (en) * 2016-02-19 2017-08-24 Ｓｄｒテクノロジー株式会社 Method of manufacturing beam-column joint structure, and beam-column joint structure

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