JP4376088B2 - Beam joint structure - Google Patents
Beam joint structure Download PDFInfo
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- JP4376088B2 JP4376088B2 JP2004046460A JP2004046460A JP4376088B2 JP 4376088 B2 JP4376088 B2 JP 4376088B2 JP 2004046460 A JP2004046460 A JP 2004046460A JP 2004046460 A JP2004046460 A JP 2004046460A JP 4376088 B2 JP4376088 B2 JP 4376088B2
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- 230000000452 restraining Effects 0.000 claims description 172
- 210000000614 Ribs Anatomy 0.000 claims description 48
- 238000010008 shearing Methods 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 230000037250 Clearance Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 9
- 238000005452 bending Methods 0.000 description 9
- 230000035512 clearance Effects 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000003466 welding Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000003247 decreasing Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000001264 neutralization Effects 0.000 description 3
- 230000002829 reduced Effects 0.000 description 3
- 230000001131 transforming Effects 0.000 description 3
- 210000001503 Joints Anatomy 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000000181 anti-adherence Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
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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
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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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
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2415—Brackets, gussets, joining plates
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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
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2442—Connections with built-in weakness points
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2448—Connections between open section profiles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2454—Connections between open and closed section profiles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2457—Beam to beam connections
Description
本発明は、梁継手構造に関する。 The present invention relates to a beam joint structure.
従来、柱フランジと梁フランジとを、図１８に示すように、スプライスプレート９の中間部に、塑性化部１１を有するスプライスプレート９を用いた継手構造として、塑性化部１１の梁軸方向両側に間隔をおいて補剛リブ２４を固着した補剛リブ付きスプライスプレート２５を用いた継手構造が知られている（例えば、特許文献１参照。）。 Conventionally, as shown in FIG. 18, as shown in FIG. 18, as a joint structure using a splice plate 9 having a plasticized portion 11 at an intermediate portion of the splice plate 9, both sides in the beam axis direction of the plasticized portion 11 are used. A joint structure using a splicing plate 25 with stiffening ribs to which stiffening ribs 24 are fixed at intervals is known (see, for example, Patent Document 1).
このような塑性化部１１の梁軸方向両側に間隔をおいて別個の補剛リブ２４を設けた補剛リブ付きスプライスプレート２５を用いた継手構造の場合は、補剛リブ２４間におけるスプライスプレート９の中央部分を塑性化部分１１とするために、補剛リブ間の間隔寸法Ｄを大きくすると、塑性化部１１が座屈するために、補剛リブ２４間の間隔を広くすることができず、必然的に補剛リブ２４間の間隔を狭くする必要があるという問題点（１）がある。 In the case of such a joint structure using the splicing plate 25 with the stiffening rib provided with the separate stiffening ribs 24 on both sides in the beam axis direction of the plasticizing portion 11, the splice plate between the stiffening ribs 24. When the distance D between the stiffening ribs is increased so that the central portion 9 is the plasticized portion 11, the plasticizing portion 11 is buckled, so that the distance between the stiffening ribs 24 cannot be increased. There is a problem (1) in that it is necessary to narrow the interval between the stiffening ribs 24 inevitably.
補剛リブ２４間の間隔寸法Ｄを狭くした場合は、地震時等に、スプライスプレート９に梁軸方向の軸力（引張力および圧縮力）を作用した場合、スプライスプレート９の塑性化部分の引張―圧縮の変形によるひずみ（塑性化部の歪δ＝地震時等の伸び縮み／補剛リブ間の間隔）が大きくなり、塑性化部分１１でスプライスプレート９が破断する恐れがあるという問題点（２）もある。 When the distance D between the stiffening ribs 24 is narrowed, when an axial force (tensile force and compressive force) in the beam axis direction is applied to the splice plate 9 during an earthquake or the like, the plasticized portion of the splice plate 9 The strain (strain δ of the plasticized portion δ = expansion / contraction at the time of an earthquake / interval between stiffening ribs) due to deformation of tension and compression increases, and the splice plate 9 may break at the plasticized portion 11 There is also (2).
また、スプライスプレート９に補剛リブ２４を溶接で固定する場合は、塑性化部分２４に溶接時の熱の影響が及ぶため、塑性化部分１１の材質が変化し、降伏点、引張強度、靭性等の機械的性質が変化してしまう。例えば、鋼構造物の設計において、スプライスプレート９の降伏荷重等を考慮している場合には、設計通りでなくなるという問題点（３）もある。 Further, when the stiffening rib 24 is fixed to the splice plate 9 by welding, the plasticizing portion 24 is affected by heat during welding, so the material of the plasticizing portion 11 changes, yield point, tensile strength, toughness. The mechanical properties such as will change. For example, in the design of a steel structure, when the yield load of the splice plate 9 is taken into consideration, there is a problem (3) that the design is not as designed.
また、地震時の急激な速度の速い変形に対しては、溶接によって鋼材組織が変化し、溶接部の靭性が低下し、かつ溶接部が応力集中するため破断の起点となり、地震時の繰り返し受ける引張―圧縮の変形に対して疲労特性が低下し、早期に破断する恐れがあるという問題点（４）もある。 In addition, the steel structure is changed by welding, and the toughness of the welded part is reduced due to welding, and the welded part is stress concentrated. There is also a problem (4) in which fatigue characteristics are lowered with respect to tension-compression deformation, and there is a risk of breaking early.
また、図１９に示すように、独立した２枚の添え板２６を使用して、スプライスプレート９の面外座屈を防止する構造も知られているが、この場合には、添え板２６の端部を梁側あるいは柱側フランジに取り付ける形態となり、座屈防止部材としての添え板２６の部品点数が多くなる。また、１枚の添え板２６を使用し、添え板２６の端部を取付部２７とする場合には、塑性化部分１１を添え板２６の先端部から中間部により支承する構造になり、この場合には、その端部の取付部２７の寸法分、部材軸方向（梁軸方向）の寸法が長くなり、また、これらの構造形態では、施工上も柱側のフランジと梁フランジとの接合時に同時に取付けることになり、スプライスプレート９の取り付け後に取付けこともできないので、施工上の自由度も低く、また、スプライスプレート９の接合部と座屈拘束部材が接合されているため、座屈拘束部材と塑性化部分のクリアランス量が建物等の構造物の変形によって変化してしまい、常に一定距離のクリアランス（間隙）を確保できずに安定した座屈拘束を確保できないという問題点（５）もある。 In addition, as shown in FIG. 19, a structure for preventing out-of-plane buckling of the splice plate 9 by using two independent attachment plates 26 is also known. The end is attached to the beam side or the column side flange, and the number of parts of the attachment plate 26 as a buckling prevention member increases. Further, when a single plate 26 is used and the end portion of the plate 26 is used as the mounting portion 27, the plasticized portion 11 is supported by the intermediate portion from the tip portion of the plate 26. In this case, the dimension in the member axis direction (beam axis direction) becomes longer by the dimension of the mounting portion 27 at the end, and in these structural forms, the column side flange and the beam flange are joined in terms of construction. Since it is sometimes attached at the same time and cannot be attached after the splice plate 9 is attached, the degree of freedom in construction is low, and since the joint portion of the splice plate 9 and the buckling restraining member are joined, buckling restraint There is also a problem (5) in which the clearance amount between the member and the plasticized portion changes due to deformation of a structure such as a building, and a constant distance clearance (gap) cannot always be secured and stable buckling restraint cannot be secured. That.
例えば、建築物等の構造物の柱と梁の接合部が剛接合によって接合され、柱と梁のなす角度が９０度であった場合、地震時の柱や梁の変形に対し、スプライスプレートの塑性化部分が弾性範囲内では、剛接合であるため柱―梁のなす角度が９０度を保っている。
ところが、スプライスプレートの塑性化部分が塑性範囲の時は、梁にヒンジが生成されたことになり、柱と梁の接合部は剛接合からスプライスプレートの塑性化部を起点としたピン接合になる。よって柱と梁のなす角度が９０度であったものが、ピン接合となったことで９０度でなくなる。
よって、スプライスプレートの塑性化部分が弾性範囲の時は、柱側のフランジとスプライスプレートと梁とは、一体となった部材として、接合部は剛接合として９０度を保ち柱や梁が変形する。
スプライスプレートの塑性化部分が塑性化した時は、柱と柱フランジまでは、剛接合状態で９０度を保ったまま変形し、スプライスプレート塑性化部は９０度よりも増減した角度で変形する。ここで、座屈拘束部材が柱フランジ側や梁側に接合されている場合は、座屈拘束部材は柱フランジや梁に追従して剛接合状態で９０度を保ったまま変形している。
しかし、スプライスプレート塑性化部は９０度よりも増減した角度で変形しているために、塑性化部を座屈拘束していたものが、角度の差によって一定のクリアランスではなくなり、かつ塑性化部の梁軸方向に対してクリアランスの距離が変化し、座屈拘束の効果がなくなり、塑性化部は座屈してしまう。
However, when the plasticized portion of the splice plate is in the plastic range, a hinge is generated in the beam, and the joint between the column and the beam is changed from a rigid connection to a pin connection starting from the plasticized portion of the splice plate. . Therefore, the angle formed by the column and the beam is 90 degrees, but it is not 90 degrees due to the pin connection.
Therefore, when the plasticized portion of the splice plate is in the elastic range, the column side flange, the splice plate, and the beam are integrated into one member, and the joint is maintained at 90 degrees as a rigid joint, and the column and beam are deformed. .
When the plasticized portion of the splice plate is plasticized, the column and the column flange are deformed while maintaining 90 degrees in a rigid connection state, and the splice plate plasticized portion is deformed at an angle increased or decreased from 90 degrees. Here, when the buckling restraining member is joined to the column flange side or the beam side, the buckling restraining member follows the column flange or the beam and is deformed while maintaining 90 degrees in a rigid joining state.
However, since the splice plate plasticized part is deformed at an angle increased or decreased from 90 degrees, the plasticized part is restrained from buckling, and the clearance is not constant due to the difference in angle. The clearance distance changes with respect to the beam axis direction, and the effect of buckling restraint is lost, and the plasticized portion buckles.
本発明は、従来のようにスプライスプレート９に補剛リブ２４を直接取り付けることなく、スプライスプレート９における塑性化部１１に、スプライスプレート９とは独立した別個の座屈拘束部材をスプライスプレート９に設けることにより、少なくとも前記の問題点（１）〜（４）、すなわち、スプライスプレートにおける塑性化部を長くして、この部分のひずみを小さくし、また、スプライスプレートに溶接することなくスプライスプレートの機械的性質を変化させることなく、地震時の速度の速い変形に対しても溶接により補剛リブを取り付ける場合のように溶接部の応力集中あるいは疲労特性の低下を防止し、主要構造部材である梁を塑性化させないようにして、地震時の補修を容易にする梁継手構造を提供することを目的とする。
また、これに加えて、座屈拘束部材がスプライスプレートおよび柱梁接合部材とは別個の独立した部材とされていることにより、塑性化部分の変形に追従し、常に塑性化部分とのクリアランスが一定距離確保することが可能で安定した座屈拘束を確保できる梁継手構造を提供することを目的とする。例えば、建築物等の構造物の柱梁の接合部が剛接合によって接合され、柱と梁のなす角度が９０度であった場合、スプライスプレートの塑性化部分が塑性化した時に、座屈拘束部材は独立し、柱や柱側のフランジとは接合されていないので、柱と柱側のフランジの剛接合状態の９０度に追従することがない。したがって独立した座屈拘束部材はスプライスプレート塑性化部分が９０度よりも増減した角度で変形しても、塑性化部分の増減した角度に追従して常に一定のクリアランス量を保ち、安定した座屈拘束効果を確保することができる梁継手構造を提供することを目的とする。
In the present invention, the stiffening rib 24 is not directly attached to the splice plate 9 as in the prior art, and a separate buckling restraining member independent of the splice plate 9 is attached to the splice plate 9. By providing, at least the above-mentioned problems (1) to (4), that is, the plasticized portion in the splice plate is lengthened, the strain in this portion is reduced, and the splice plate is not welded to the splice plate. It is a major structural member that prevents stress concentration or deterioration of fatigue characteristics of welded parts, such as when stiffening ribs are attached by welding, even for deformations with high speed during earthquakes, without changing mechanical properties. An object of the present invention is to provide a beam joint structure that facilitates repair in the event of an earthquake without plasticizing the beam.
In addition to this, the buckling restraining member is an independent member that is separate from the splice plate and the beam-column joining member, so that it follows the deformation of the plasticized portion and always has a clearance from the plasticized portion. An object of the present invention is to provide a beam joint structure capable of securing a constant distance and ensuring stable buckling restraint. For example, if the joints of columns and beams of structures such as buildings are joined by rigid joints and the angle between the columns and beams is 90 degrees, the buckling restraint is applied when the plasticized part of the splice plate is plasticized. Since the members are independent and are not joined to the pillar or the flange on the pillar side, they do not follow 90 degrees of the rigid joint state between the pillar and the flange on the pillar side. Therefore, the independent buckling restraint member keeps a constant amount of clearance following the increased or decreased angle of the plasticized part even if the spliced plate plasticized part deforms at an angle increased or decreased by more than 90 degrees. It aims at providing the beam joint structure which can ensure a restraint effect.
前記の従来の問題点を有利に解決するために、第１発明の梁継手構造においては、柱側のフランジに、梁フランジを中間部に塑性化部分を有するスプライスプレートを介して固定手段により接合する梁継手構造において、スプライスプレートの塑性化部分に、その塑性化部分の座屈を拘束する別個の座屈拘束部材が設けられ、前記塑性化部分と座屈拘束部材との間に、付着防止層等により間隙が設けられ、柱側のフランジと梁フランジの表面または裏面のいずれか片側または両側に前記スプライスプレートが配置され、そのスプライスプレートの外側に座屈拘束部材が配置され、前記座屈拘束部材は平板状の座屈拘束部材本体を備え、その平板状の座屈拘束部材本体の巾方向両端部には、
その拘束部材本体の表裏両側に突出すると共に梁軸方向に連続した補剛リブが間隔をおいて平行に一体に設けられ、スプライスプレート側である内表面側に突出する前記補剛リブはスプライスプレート巾方向変形拘束部材であり、前記補剛リブ間の内側間隔寸法は、スプライスプレートにおける塑性化部分の巾寸法よりも若干大きく設定されて、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、スプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする。
To advantageously solve the above-mentioned conventional problems, in the beam joint structure of the first invention, the beam side flange is joined to the column side flange by a fixing means via a splice plate having a plasticized portion in the middle. In the beam joint structure, a separate buckling restraining member for restraining the buckling of the plasticized portion is provided in the plasticized portion of the splice plate , and adhesion prevention is provided between the plasticized portion and the buckling restraining member. A gap is provided by a layer or the like, the splice plate is disposed on one or both sides of the flange on the column side and the front or back surface of the beam flange, and a buckling restraining member is disposed on the outer side of the splice plate. The restraining member includes a flat buckling restraining member main body, and at both ends in the width direction of the flat buckling restraining member main body,
The stiffening ribs projecting on both the front and back sides of the restraining member main body and continuously provided in parallel with a gap in the beam axis direction are integrally provided in parallel with each other. It is a width direction deformation restraining member, the inner distance between the stiffening ribs is set slightly larger than the width of the plasticized portion in the splice plate ,
The buckling restraining member includes a portion for restraining buckling deformation in the thickness direction of the splice plate and a portion for restraining deformation in the width direction of the splice plate .
また、第２発明の梁継手構造においては、柱側のフランジに、梁フランジを中間部に塑性化部分を有するスプライスプレートを介して固定手段により接合する梁継手構造において、スプライスプレートの塑性化部分に、その塑性化部分の座屈を拘束する別個の座屈拘束部材が設けられ、前記塑性化部分と座屈拘束部材との間に、付着防止層等により間隙が設けられ、柱側のフランジと梁フランジの表面および裏面の両側にスプライスプレートが配置され、そのスプライスプレートの外側に座屈拘束部材が配置され、前記座屈拘束部材は平板状の座屈拘束部材本体を備え、その平板状の座屈拘束部材本体の巾方向両端部には、
その拘束部材本体の表裏両側に突出すると共に梁軸方向に連続した補剛リブが間隔をおいて平行に一体に設けられ、スプライスプレート側である内表面側に突出する前記補剛リブはスプライスプレート巾方向変形拘束部材であり、前記補剛リブ間の内側間隔寸法は、スプライスプレートにおける塑性化部分の巾寸法よりも若干大きく設定され、
前記ボルトの横方向の移動を拘束する梁下フランジ側の孔または座屈拘束部材側のボルト孔を、塑性化部分の横に位置するように設けてボルト軸部を支承して、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、スプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする。
また、第３発明の梁継手構造においては、柱側のフランジに、梁フランジを中間部に塑性化部分を有するスプライスプレートを介して固定手段により接合する梁継手構造において、スプライスプレートの塑性化部分に、その塑性化部分の座屈を拘束する別個の座屈拘束部材が設けられ、前記塑性化部分と座屈拘束部材との間に、付着防止層等により間隙が設けられ、柱側のフランジと梁フランジに前記スプライスプレートが配置され、そのスプライスプレートの外側に座屈拘束部材が配置され、前記座屈拘束部材を取り付けるための間隔をおいた複数のボルト軸部をそれぞれ前記塑性化部分の巾方向両側面に当接または近接配置し、
前記ボルトの横方向の移動を拘束する梁下フランジ側の孔または座屈拘束部材側のボルト孔を、塑性化部分の横に位置するように設けてボルト軸部を支承して、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、前記複数のボルト軸部によるスプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする。
また、第４発明の梁継手構造においては、柱側のフランジに、梁フランジを中間部に塑性化部分を有するスプライスプレートを介して固定手段により接合する梁継手構造において、スプライスプレートの塑性化部分に、その塑性化部分の座屈を拘束する別個の座屈拘束部材が設けられ、前記塑性化部分と座屈拘束部材との間に、付着防止層等により間隙が設けられ、柱側のフランジと梁フランジに前記スプライスプレートが配置され、そのスプライスプレートの外側に座屈拘束部材が配置され、前記座屈拘束部材を取り付けるための間隔をおいた複数のボルトには、その各ボルト軸部の外側にそれぞれ筒状リングが嵌合配置されると共に、前記各ボルト軸部に嵌合した筒状リングをそれぞれ前記塑性化部分の巾方向両側面に当接または近接配置し、かつ前記各筒状リングの高さ寸法は前記塑性化部分の高さ寸法よりも若干高くされ、
前記ボルトの横方向の移動を拘束する梁下フランジ側の孔または座屈拘束部材側のボルト孔を、塑性化部分の横に位置するように設けてボルト軸部を支承して、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、前記複数のボルト軸部の外側に嵌合配置した筒状リングによるスプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする。
In the beam joint structure according to the second aspect of the invention, in the beam joint structure in which the beam flange is joined to the column side flange by a fixing means via a splice plate having a plasticized portion in the middle portion, the plasticized portion of the splice plate In addition, a separate buckling restraining member for restraining buckling of the plasticized portion is provided, and a gap is provided between the plasticizing portion and the buckling restraining member by an adhesion preventing layer or the like, and the flange on the column side is provided. Splice plates are arranged on both sides of the front and back surfaces of the beam flange, and a buckling restraining member is arranged outside the splice plate, and the buckling restraining member includes a flat buckling restraining member main body, the flat plate shape At both ends in the width direction of the buckling restraining member body of
The stiffening ribs projecting on both the front and back sides of the restraining member main body and continuously provided in parallel with a gap in the beam axis direction are integrally provided in parallel with each other. It is a width direction deformation restraining member, and the inner distance between the stiffening ribs is set slightly larger than the width of the plasticized portion in the splice plate ,
A bolt hole on the lower flange side of the beam or a bolt hole on the buckling restraining member side that restrains the lateral movement of the bolt is provided so as to be located beside the plasticized portion, and the bolt shaft portion is supported,
The buckling restraining member includes a portion for restraining buckling deformation in the thickness direction of the splice plate and a portion for restraining deformation in the width direction of the splice plate.
In the beam joint structure according to the third aspect of the present invention, in the beam joint structure in which the beam flange is joined to the column side flange by a fixing means via a splice plate having a plasticized portion in the middle portion, the plasticized portion of the splice plate In addition, a separate buckling restraining member for restraining buckling of the plasticized portion is provided, and a gap is provided between the plasticizing portion and the buckling restraining member by an adhesion preventing layer or the like, and the flange on the column side is provided. The splice plate is disposed on the beam flange, a buckling restraining member is disposed on the outer side of the splice plate, and a plurality of bolt shaft portions spaced at intervals for attaching the buckling restraining member are respectively disposed on the plasticized portion. Abut or close to both sides in the width direction,
A bolt hole on the lower flange side of the beam or a bolt hole on the buckling restraining member side that restrains the lateral movement of the bolt is provided so as to be located beside the plasticized portion, and the bolt shaft portion is supported,
The buckling restraining member includes a portion for restraining buckling deformation in the thickness direction of the splice plate and a portion for restraining deformation in the width direction of the splice plate by the plurality of bolt shaft portions. And
In the beam joint structure according to the fourth aspect of the present invention, in the beam joint structure in which the beam flange is joined to the column side flange by a fixing means via a splice plate having a plasticized portion in the middle portion, the plasticized portion of the splice plate In addition, a separate buckling restraining member for restraining buckling of the plasticized portion is provided, and a gap is provided between the plasticizing portion and the buckling restraining member by an adhesion preventing layer or the like, and the flange on the column side is provided. The splice plate is disposed on the beam flange, a buckling restraining member is disposed on the outside of the splice plate, and a plurality of bolts spaced at intervals for attaching the buckling restraining member are provided on each bolt shaft portion. The cylindrical rings are fitted and arranged on the outside, and the cylindrical rings fitted to the bolt shaft portions are respectively in contact with or in close proximity to both side surfaces in the width direction of the plasticized portion. And, and the height of each cylindrical ring is slightly higher than the height of the plastic moiety,
A bolt hole on the lower flange side of the beam or a bolt hole on the buckling restraining member side that restrains the lateral movement of the bolt is provided so as to be located beside the plasticized portion, and the bolt shaft portion is supported,
The buckling restraining member restrains deformation in the width direction of the splice plate by a portion that restrains buckling deformation in the thickness direction of the splice plate and a cylindrical ring that is fitted and arranged outside the plurality of bolt shaft portions. And a portion to be provided .
また、第５発明では、第１発明または第２発明の発明の梁継手構造において、梁端部における梁フランジに、梁軸方向に延長する長孔または円形孔が設けられ、その長孔または円形孔に位置するようにスプライスプレートの塑性化部分に長孔が設けられ、座屈拘束部材の長孔または円形孔からなるボルト孔と、梁フランジの長孔または円形孔と、スプライスプレートの塑性化部分のボルト孔とに渡ってボルトが挿通されると共にこれに螺合されるナットにより、前記座屈拘束部材がスプライスプレートの塑性化部分に取り付けられていることを特徴とする。 In the fifth aspect of the invention, in the beam joint structure of the first or second aspect of the invention, the beam flange at the beam end is provided with a long hole or a circular hole extending in the beam axis direction. A long hole is provided in the plasticized part of the splice plate so as to be located in the hole, a bolt hole consisting of a long hole or circular hole of the buckling restraining member, a long hole or circular hole of the beam flange, and plasticization of the splice plate The buckling restraining member is attached to the plasticized portion of the splice plate by a nut inserted through the bolt hole of the portion and screwed into the bolt.
また、第６発明では、第１発明〜第５発明のいずれかの発明の梁継手構造において、前記の別個の座屈拘束部材は、スプライスプレートおよび柱梁接合部材とは別個の部材であることを特徴とする。 In the sixth invention, in the beam joint structure according to any one of the first to fifth inventions, the separate buckling restraining member is a member separate from the splice plate and the column beam joining member. It is characterized by.
また、第７発明では、第１発明〜第６発明のいずれかの発明の梁継手構造において、梁上側において柱側のフランジと梁フランジとにわたって配置される塑性化部分を有しないスプライスプレートに縦リブを設けて、その縦リブによりせん断力を負担し伝達するようにしたことを特徴とする。 In the seventh invention, in the beam joint structure according to any one of the first to sixth inventions, the splice plate having no plasticized portion disposed over the column side flange and the beam flange on the upper side of the beam is provided vertically. A rib is provided, and a shearing force is borne and transmitted by the longitudinal rib.
本発明によると、次のような効果を有している。
（１）座屈拘束部材によって、スプライスプレートの引張―圧縮の変形に対しても座屈せず、塑性化後も安定した履歴特性が得られる。
（２）非付着状態の場合は、座屈拘束部材によって塑性化部分が座屈せずに、塑性化後も安定した履歴特性が得られる。また、クリアランス（間隙）を設ける場合は、これによって塑性化部分と座屈拘束部材は、座屈拘束部材の剛性が伝わらないため、塑性化部分の剛性や荷重だけを考慮すれば良く、塑性化部分が塑性化した後の荷重や２次剛性が急激に上昇することはない。圧縮時の断面膨張による座屈拘束部材の接触およびそれによる剛性、荷重の上昇を抑えられる。
（３）スプライスプレートの塑性化部分の長さを自由設定できるため、地震時の荷重に対して、塑性化部分を早く降伏させたい場合は、塑性化部分の長さを短くし、塑性化部分を遅く降伏させたい場合には、長くすればよく、降伏させるタイミングを塑性化部分の長さによって調整でき、設計の自由度が飛躍的に高まる。
（４）地震時に、塑性化部分に受ける最大ひずみを塑性化部分の長さによって調整できるので、疲労性能も調整できる。
（５）スプライスプレートの塑性化部分に溶接部分がなくなるので、１）溶接の影響による材質の変化がなくなり、２）スプライスプレートの降伏荷重が変化しない、３）溶接による靭性低下がない、４）溶接部の応力集中および材質変化による疲労低下がない。
（６）座屈拘束部材に、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、スプライスプレートの巾方向の変形を拘束する部分とを備えていると、スプライスプレートの塑性化部分における厚さ方向の座屈拘束のみならず巾方向の過度な変形を防止できる。
（７）座屈拘束部材がスプライスプレートおよび柱梁接合部材とは別個に独立した部材で座屈拘束しているので、塑性化部分に対して常に一定のクリアランスを確保することが可能で、常に安定した座屈拘束効果を得られる。
（８） 梁上側において柱側のフランジと梁フランジとにわたって配置される塑性化部分を有しないスプライスプレートに縦リブを設けて、その縦リブによりせん断力を負担しこれを伝達するようにしたので、塑性化部分を有しないスプライスプレートに縦リブを設けるだけで、せん断力を梁側から柱側に容易に伝達することができる。
（９）塑性化部分の横に座屈拘束部材を取付けるためのボルト軸部を当接または近接配置して、塑性化部分の巾方向の変形を抑えるようにしたので、座屈拘束部材を取付けるボルトを有効に利用して、スプライスプレートにおける塑性化部分の横方向の変形を抑えることができ、また座屈拘束部材の形状を平板等の経済的な単純形状とすることができる。
（１０）塑性化部分の横に座屈拘束部材を取付けるためのボルト軸部の外側に嵌合配置した筒状リングを当接または近接配置して、塑性化部分の巾方向の変形を抑えるようにしたので、座屈拘束部材を取付けるボルトを有効に利用すると共にこれに筒状リングを嵌合配置するだけで、筒状リングおよびボルトにより、スプライスプレートにおける塑性化部分の横方向の変形を抑えることができ、また座屈拘束部材の形状を平板等の経済的な単純形状とすることができる。また、前記筒状リングの高さ寸法をスプライスプレートの塑性化部分の厚さ寸法よりも若干高くして介在させると、スプライスプレートの塑性化部分と座屈拘束部材との間に容易に間隙を設けて、座屈拘束部材をスプライスプレートの塑性化部分に非付着状態とすることができる。
The present invention has the following effects.
(1) The buckling restraining member does not buckle against tension-compression deformation of the splice plate, and stable hysteresis characteristics can be obtained even after plasticization.
(2) In the non-attached state, the plasticized portion is not buckled by the buckling restraining member, and stable hysteresis characteristics can be obtained even after plasticization. In addition, when a clearance (gap) is provided, the plasticized portion and the buckling restraint member do not transmit the rigidity of the buckling restraint member, so that only the rigidity and load of the plasticized portion need to be considered. The load and secondary rigidity after the portion is plasticized do not increase rapidly. It is possible to suppress the contact of the buckling restraining member due to the cross-sectional expansion during compression, and the increase in rigidity and load due to the contact.
(3) Since the length of the plasticized part of the splice plate can be set freely, if you want to yield the plasticized part quickly with respect to the load at the time of the earthquake, shorten the length of the plasticized part. When it is desired to yield at a slower rate, it is sufficient to lengthen the yield, and the yielding timing can be adjusted by the length of the plasticized portion, which greatly increases the degree of freedom in design.
(4) Since the maximum strain applied to the plasticized portion during an earthquake can be adjusted by the length of the plasticized portion, the fatigue performance can also be adjusted.
(5) Since there is no welded part in the plasticized part of the splice plate, 1) there is no change in the material due to the effect of welding, 2) there is no change in the yield load of the splice plate, 3) there is no reduction in toughness due to welding, 4) There is no fatigue reduction due to stress concentration and material changes in the weld.
(6) When the buckling restraining member includes a portion for restraining buckling deformation in the thickness direction of the splice plate and a portion for restraining deformation in the width direction of the splice plate, the plasticizing portion of the splice plate Not only the buckling constraint in the thickness direction but also the excessive deformation in the width direction can be prevented.
(7) Since the buckling restraining member is buckled and restrained by a member independent of the splice plate and the beam-column joining member, it is possible to always ensure a certain clearance with respect to the plasticized portion. A stable buckling restraining effect can be obtained.
(8) Since a vertical rib is provided on a splice plate that does not have a plasticized portion arranged between the column side flange and the beam flange on the upper side of the beam, the vertical rib bears a shearing force and transmits it. The shear force can be easily transmitted from the beam side to the column side simply by providing the vertical rib on the splice plate having no plasticized portion.
(9) Since the bolt shaft portion for attaching the buckling restraining member to the side of the plasticized portion is placed in contact or close to the plasticizing portion so as to suppress the deformation in the width direction of the plasticizing portion, the buckling restraining member is attached. Effective use of the bolts can suppress lateral deformation of the plasticized portion in the splice plate, and the shape of the buckling restraining member can be an economical simple shape such as a flat plate.
(10) A cylindrical ring fitted and arranged outside the bolt shaft portion for attaching the buckling restraining member to the side of the plasticized portion is brought into contact with or in close proximity so as to suppress deformation in the width direction of the plasticized portion. Therefore, it is possible to effectively use the bolt for attaching the buckling restraining member, and to suppress the lateral deformation of the plasticized portion of the splice plate by simply fitting and arranging the cylindrical ring on the bolt. Moreover, the shape of the buckling restraining member can be an economical simple shape such as a flat plate. Further, if the height of the cylindrical ring is slightly higher than the thickness of the plasticized portion of the splice plate, a gap is easily formed between the plasticized portion of the splice plate and the buckling restraining member. By providing the buckling restraining member, it is possible to make the buckling restraining member non-attached to the plasticized portion of the splice plate.
次に、この発明を図示の実施形態に基づいて詳細に説明する。
図１〜図３は本発明の第１参考形態の梁継手構造を示すものであって、梁１の端部における梁せい方向の一端側、すなわち下フランジ２の端部近傍に、梁軸方向に延長する長孔３が、梁軸方向に同じ位置において、フランジ幅方向に間隔をおいて平行に複数（図示の場合は、ウエブ４の両側にそれぞれ１つ合計２つ）設けられている。また、前記長孔３から間隔をおいて梁下フランジ２には、多数のボルト孔１８が設けられている。
Next, the present invention will be described in detail based on the illustrated embodiment.
1 to 3 there is shown a beam joint structure of the first reference embodiment of the present invention, Sei Ryo direction of the one end side at the end of the beam 1, i.e. in the vicinity of the end portion of the lower flange 2, the beam axis In the same position in the beam axis direction, a plurality of long holes 3 extending in parallel to each other are provided in parallel at intervals in the flange width direction (two in each case, one on each side of the web 4 in the figure). A large number of bolt holes 18 are provided in the under-beam flange 2 at a distance from the elongated hole 3.
柱５側に固定の外ダイアフラム等からなる上フランジ６と下フランジ７が、梁の上下のフランジ２，８と同レベルに対向するように溶接等の固定手段により固定され、各フランジ６，７には、多数のボルト孔１９が設けられている。 An upper flange 6 and a lower flange 7 made of an outer diaphragm fixed on the column 5 side are fixed by fixing means such as welding so as to face the upper and lower flanges 2 and 8 of the beam. Are provided with a large number of bolt holes 19.
前記梁下フランジ２の上面（表面）および下面（裏面）には、それぞれ柱５側の下フランジ７の上面および下面にわたって、梁継手部材としてのスプライスプレート９が重合するように配置され、前記スプライスプレート９には、図８に示すように、幅方向寸法を一定のスプライスプレート９の部材長手方向中間部に、スプライスプレート９の巾方向中央部に１つ（上側配置のスプライスプレート９の場合で図示を省略した）、または巾方向に間隔をおいて２つ（下側配置のスプライスプレート９の場合で図８の場合）のボルト挿通孔を兼ねた長孔１０が設けられて、塑性化部分１１が形成されており、梁下フランジ２の長孔（または円形孔）３にスプライスプレート９の長孔１０が重合または位置するように配置されている。前記スプライスプレート９の材質としては、低降伏点鋼等あるいは、その他の鋼材等を使用することもでき、適宜の公知の材料を使用することができる。スプライスプレート９の両端部には、それぞれ多数のボルト孔２８が間隔をおいて設けられている。 Splicing plates 9 as beam joint members are arranged on the upper surface (front surface) and the lower surface (rear surface) of the lower beam flange 2 so as to overlap the upper surface and the lower surface of the lower flange 7 on the column 5 side, respectively. As shown in FIG. 8, the plate 9 has one width-direction middle portion of the splice plate 9 having a constant width direction dimension, and one in the width-direction center portion of the splice plate 9 (in the case of the splice plate 9 arranged on the upper side). (Not shown) or two elongated holes 10 serving as bolt insertion holes provided at intervals in the width direction (in the case of FIG. 8 in the case of the splice plate 9 arranged on the lower side) 11 is formed, and the long hole 10 of the splice plate 9 is arranged or overlapped with the long hole (or circular hole) 3 of the under-beam flange 2. As the material of the splice plate 9, low yield point steel or the like, other steel materials, or the like can be used, and appropriate known materials can be used. A large number of bolt holes 28 are provided at both ends of the splice plate 9 at intervals.
前記スプライスプレート９の塑性化部分１１を形成する場合、図８（ｂ）に示すように、スプライスプレート９の長手方向中間部において、スプライスプレート９の巾方向両側にさらに、切り欠き１２を設けるようにしてもよく、図８（ｂ）に２点鎖線ｄで示すように長孔１０付近まで切り込みを入れ、図８（ｃ）に示すように、スプライスプレート９の巾方向両側の切り欠き１２を深くして、ボルト挿通孔を兼ねた長孔１０を設けないで、塑性化部分１１を形成することもできる。 When the plasticized portion 11 of the splice plate 9 is formed, as shown in FIG. 8B, notches 12 are further provided on both sides in the width direction of the splice plate 9 in the longitudinal middle portion of the splice plate 9. As shown in FIG. 8B, a notch is made to the vicinity of the long hole 10 as shown by a two-dot chain line d, and as shown in FIG. 8C, the notches 12 on both sides in the width direction of the splice plate 9 are formed. It is also possible to form the plasticized portion 11 by making it deeper and not providing the elongated hole 10 that also serves as a bolt insertion hole.
前記スプライスプレート９の外側に、スプライスプレート９の塑性化部分１１に、その座屈を防止するための矩形状の厚鋼板からなる座屈拘束部材１３が配置され、スプライスプレート９側の配置される座屈拘束部材１３の内面と前記スプライスプレート９との間には、前記座屈拘束部材１３が前記スプライスプレート９に付着し一体化するのを防止し、非付着状態とするために、ゴムシート等の薄い弾性層あるいはゴムアスファルト等の付着防止被膜１４等により間隙が介在されている。本発明においては、座屈拘束部材１３は塑性化部分１１の範囲をカバーするように設け、座屈拘束部材１３の端部に取り付け部を設けないため、スプライスプレート９の塑性化部分１１を適宜設計により長くしても、座屈拘束部材１３を短く小型の部材とすることができる。塑性化部分１１の長さは適宜設計により設定される。 A buckling restraining member 13 made of a rectangular thick steel plate for preventing the buckling is disposed on the plasticized portion 11 of the splice plate 9 outside the splice plate 9 and disposed on the splice plate 9 side. A rubber sheet is provided between the inner surface of the buckling restraining member 13 and the splice plate 9 in order to prevent the buckling restraining member 13 from adhering to and integrated with the splice plate 9 and to make it non-attached. A gap is interposed by an anti-adhesion coating 14 such as a thin elastic layer or rubber asphalt. In the present invention, the buckling restraining member 13 is provided so as to cover the range of the plasticized portion 11, and no attachment portion is provided at the end of the buckling restraining member 13, so that the plasticizing portion 11 of the splice plate 9 is appropriately attached. Even if the length is longer by design, the buckling restraining member 13 can be made shorter and smaller. The length of the plasticized portion 11 is appropriately set by design.
前記座屈拘束部材１３は、スプライスプレート９と同材質である場合には、これよりも曲げ剛性を高くするために、図９に示すように、厚い鋼板を使用し、座屈拘束部材１３の梁軸方向中間部に、座屈拘束部材１３の巾方向中央部に２つ（上側配置の座屈拘束部材１３の場合で図示を省略した）、または巾方向に間隔をおいて４つ（下側配置の座屈拘束部材１３の場合で図９ａの場合）の円形孔１５または長孔が間隔をおいて設けられている。 When the buckling restraining member 13 is made of the same material as that of the splice plate 9, a thick steel plate is used as shown in FIG. Two in the center in the width direction of the buckling restraining member 13 (not shown in the case of the buckling restraining member 13 arranged on the upper side) in the middle in the beam axis direction, or four (lower) in the width direction. In the case of the laterally arranged buckling restraining member 13, circular holes 15 or long holes in the case of FIG. 9 a) are provided at intervals.
前記各スプライスプレート９が梁下フランジ２と、柱５側の下フランジ７にわたって配置されて、前記梁下フランジ２の多数のボルト孔と各スプライスプレート９の一端側における多数のボルト孔にわたって挿通された高力ボルト等のボルト１６により、スプライスプレート９の一端側が梁１側に固定され、また柱５側の下フランジ７における多数のボルト孔と、各スプライスプレート９の他端側にける多数のボルト孔とにわたって挿通された高力ボルト等のボルト１６により、スプライスプレート９の他端側が柱５側に固定され、かつ、梁下フランジ２の上下に配置の前記各スプライスプレート９の長孔１０は、上下方向が同じ位置になるように配置され、梁下フランジ２の長孔（又は円形孔）３とその上下の各スプライスプレート９の長孔１０と、座屈拘束部材１３の円形孔１５とにわたってボルト１７が挿通されると共にこれに螺合されるナットにより締め付けられて、前記座屈拘束部材１３は、スプライスプレート９の塑性化部分１１に取り付けられている。 Each splice plate 9 is disposed over the beam lower flange 2 and the lower flange 7 on the column 5 side, and is inserted through a number of bolt holes in the beam lower flange 2 and a number of bolt holes on one end side of each splice plate 9. One end side of the splice plate 9 is fixed to the beam 1 side by a bolt 16 such as a high-strength bolt, and a large number of bolt holes in the lower flange 7 on the column 5 side and a large number on the other end side of each splice plate 9. The other end side of the splice plate 9 is fixed to the column 5 side by a bolt 16 such as a high-strength bolt inserted through the bolt hole, and the long hole 10 of each splice plate 9 disposed above and below the under-beam flange 2. Are arranged so that the vertical direction is the same position, and the long holes (or circular holes) 3 of the under-beam flange 2 and the lengths of the splice plates 9 above and below the long holes 3 10 and the circular hole 15 of the buckling restraining member 13, and the bolt 17 is inserted and tightened by a nut screwed into the bolt 17, so that the buckling restraining member 13 is attached to the plasticized portion 11 of the splice plate 9. It is attached.
前記座屈拘束部材１３が前記スプライスプレート９に非付着状態であれば、前記座屈拘束部材１３が前記スプライスプレート９に接触あるいは密着していてもよいが、塑性化部分１１の塑性時の膨張を許容する逃げ部（空間等）を設けることが必要である。非付着状態とするためには、付着防止被膜等を介在させる等公知の手段を採用することもでき、あるいは、座屈拘束部材１３側またはスプライスプレート９の一方または両方にずれ止めを設けて、スプライスプレート９と座屈拘束部材１３との間に微小間隙を形成するようにしてもよく、座屈拘束部材１３に軸力を伝達しないようにすればよい。 If the buckling restraining member 13 is not attached to the splice plate 9, the buckling restraining member 13 may be in contact with or in close contact with the splice plate 9. It is necessary to provide an escape portion (space or the like) that allows In order to achieve the non-adhesion state, a known means such as interposition of an adhesion prevention film can be employed, or a buckling restraining member 13 side or one or both of the splice plate 9 is provided with a stopper, A minute gap may be formed between the splice plate 9 and the buckling restraining member 13, and an axial force may be prevented from being transmitted to the buckling restraining member 13.
前記のように構成された梁継手構造では、柱５側の下フランジ７に対して梁１を、スプライスプレート９を介して取り付けた後においても、座屈拘束部材１３を取付けることができる。また、座屈拘束部材１３は、スプライスプレートおよびフランジ等の柱梁接合部材とは別個の部材（１個の単体でもよく、上下に配置する複数部材であってもよい）であって、梁軸方向等に、塑性化部分１１の変形に追従させるため、梁フランジ２（または柱側フランジ）に長孔を設けて梁フランジ２（または柱側フランジ）に対して、位置固定状態で取付けられていない。 In the beam joint structure configured as described above, the buckling restraining member 13 can be attached even after the beam 1 is attached to the lower flange 7 on the column 5 side via the splice plate 9. Further, the buckling restraining member 13 is a member separate from the beam-to-column joining member such as a splice plate and a flange (a single member may be a single member or a plurality of members disposed above and below). In order to follow the deformation of the plasticized portion 11 in the direction, etc., a long hole is provided in the beam flange 2 (or the column side flange) and is attached to the beam flange 2 (or the column side flange) in a fixed position. Absent.
なお、梁上フランジ８と柱５側の外ダイアフラムからなる上フランジ６の接合は、塑性化部分を有しない公知のスプライスプレート３０あるいは２点鎖線で示すように補剛リブ付きの継手部材２０および高力ボルト等の多数のボルト３１により接合され、上下方向のせん断力に抵抗する構造とされる。なお図２中で、符号２９で２点鎖線で示す部分は、床スラブである。 Note that the joint between the beam upper flange 8 and the upper flange 6 made of the outer diaphragm on the column 5 side is a known splice plate 30 having no plasticized portion or a joint member 20 with a stiffening rib as shown by a two-dot chain line, and It is joined by a large number of bolts 31 such as high-strength bolts, and has a structure that resists vertical shearing force. In FIG. 2, a portion indicated by a two-dot chain line with reference numeral 29 is a floor slab.
（第２参考形態）
図４は、本発明の梁継手構造の第２参考形態を示すものであって、座屈拘束部材１３とスプライスプレート９の間にゴム層からなる弾性層１４を介在させた形態である。この弾性層１４は、スプライスプレート９の塑性化部分１１が圧縮荷重を受けた場合、塑性化部分１１の断面はポアソン比により膨張するが、その圧縮量を前記弾性層１４により吸収するためのクリアランスとして機能している。
(Second reference form)
FIG. 4 shows a second reference embodiment of the beam joint structure of the present invention, in which an elastic layer 14 made of a rubber layer is interposed between the buckling restraining member 13 and the splice plate 9. When the plasticized portion 11 of the splice plate 9 receives a compressive load, the elastic layer 14 expands in cross section due to the Poisson's ratio, but the clearance for absorbing the amount of compression by the elastic layer 14. Is functioning as
その他の構成は、前記実施形態と同様であるので、同様な部分には、同様な符号を付して説明を省略する。 Since other configurations are the same as those of the above-described embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.
（第１実施形態）
図５〜図８は本発明の第１実施形態を示すものであって、この実施形態と、前記の第１実施形態と相違する部分は、座屈拘束部材１４の形状のみが相違し、その他の部分は同様なので、同様な部分には、同様な符号を付して、前記の説明を援用し、相違する部分を主に説明する。
( First embodiment)
5 to 8 show the first embodiment of the present invention. The difference between this embodiment and the first embodiment is only the shape of the buckling restraining member 14, and the others. Since the same part is the same, the same part is denoted by the same reference numeral, the above description is used, and the different part is mainly described.
まず、図９（ｂ）を参照して、第１実施形態において使用される座屈拘束部材１３の構造について説明すると、前記座屈拘束部材１３には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、スプライスプレートの巾方向の座屈変形を拘束する部分とを備えている形態で、図９（ｂ）に示す座屈拘束部材１３は、下側に配置される座屈拘束部材１３を示したもので、平板状の座屈拘束部材本体２１の梁軸方向の中間部に、梁軸方向に延長する長孔１５が、座屈拘束部材本体２１の巾方向に間隔をおいて平行に設けられ、かつ座屈拘束部材本体２１の巾方向両端部には、座屈拘束部材本体２１の厚さ方向の表裏両側に突出するように伸びると共に梁軸方向に連続した補剛リブ２２が間隔をおいて平行に一体に設けられている。 First, the structure of the buckling restraining member 13 used in the first embodiment will be described with reference to FIG. 9B. The buckling restraining member 13 has a buckling deformation in the thickness direction of the splice plate. The buckling restraining member 13 shown in FIG. 9 (b) is a buckling restraining member disposed on the lower side in a form including a portion restraining the buckling and a portion restraining the buckling deformation in the width direction of the splice plate. The member 13 is shown, and a long hole 15 extending in the beam axis direction is provided at an intermediate portion in the beam axis direction of the flat buckling constraint member main body 21 with a gap in the width direction of the buckling constraint member main body 21. In addition, stiffening ribs extending in parallel in the beam axis direction at both ends in the width direction of the buckling restraining member main body 21 so as to protrude on both front and back sides in the thickness direction of the buckling restraining member main body 21 are provided. 22 are integrally provided in parallel at intervals.
前記補剛リブ２２をさらに説明すると、座屈拘束部材１３における内表面側の補剛リブ２２ａは、座屈拘束部材１３の面外曲げ剛性を高めていると共に、スプライスプレート９がその巾方向に大きく座屈変形するのを拘束するスプライスプレート巾方向変形拘束部材２３である。また座屈拘束部材１３における外表面側の補剛リブ２２ｂは、主として座屈拘束部材１３の曲げ剛性を高めるための補剛リブである。したがって、前記補剛リブ２２ａと、２２ｂｂはその作用が異なるため、図示のように同じ垂直面に位置するように設けなくてもよいものであるが、同じ垂直面に位置するように設けると、座屈拘束部材１３の形状が単純になり経済的に座屈拘束部材１３を製作することができる。前記補剛リブ２２ａ間の内側間隔寸法は、スプライスプレート９における塑性化部分１１の巾寸法よりも若干大きく設定されている。 The stiffening rib 22 will be further described. The stiffening rib 22a on the inner surface side of the buckling restraining member 13 increases the out-of-plane bending rigidity of the buckling restraining member 13, and the splice plate 9 extends in the width direction. This is a splice plate width direction deformation restraining member 23 for restraining large buckling deformation. Further, the stiffening ribs 22b on the outer surface side of the buckling restraining member 13 are stiffening ribs mainly for increasing the bending rigidity of the buckling restraining member 13. Accordingly, since the stiffening ribs 22a and 22bb have different functions, it is not necessary to provide them on the same vertical plane as shown in the figure, but if they are provided on the same vertical plane, The shape of the buckling restraining member 13 is simplified, and the buckling restraining member 13 can be manufactured economically. The inner distance between the stiffening ribs 22a is set slightly larger than the width of the plasticized portion 11 in the splice plate 9.
前記座屈拘束部材１３の内表面のスプライスプレート巾方向変形拘束部材２３の内側と座屈拘束部材本体２１の内表面側には、前記実施形態と同様に、スプライスプレート９と付着するのを防止し、非付着状態とするためにゴム層からなる弾性層１４等が設けられる。 In the same manner as in the above embodiment, the splice plate 9 is prevented from adhering to the inside of the splice plate width direction deformation restraining member 23 on the inner surface of the buckling restraining member 13 and the inner surface side of the buckling restraining member main body 21. And in order to make it a non-adhesion state, the elastic layer 14 etc. which consist of rubber layers are provided.
なお、梁下フランジ２の上側（ウエブ４側）に設けられる座屈拘束部材１３は図９（ｂ）に示す形態と比べて、座屈拘束部材１３の巾方向寸法が狭くなり、長孔１５が１つとなる点で相違するが、その他の構成は図９（ｂ）の説明の場合と同様であるので、詳細な図示を省略している。 Note that the buckling restraining member 13 provided on the upper side (web 4 side) of the under-beam flange 2 has a narrower dimension in the width direction of the buckling restraining member 13 than the embodiment shown in FIG. However, since the other configuration is the same as that in the case of FIG. 9B, detailed illustration is omitted.
また、図１０（ａ）に示すように、スプライスプレート９の長手方向中央部に、幅方向中央側に向かう台形溝状の切り欠き１２を設けて塑性化部分１１を形成し、その軸方向両側に座屈拘束部材１３を取付けるための長孔１０を有する広幅部を設け、その広幅部の軸方向外側に、さらに柱側のフランジまたは梁側のフランジに取付けるためのボルト孔２８を有する広幅の取り付け部を設ける形態のスプライスプレート９としてもよく、この場合には、幅方向内側に台形状に突出する突出部分３１を備えた座屈拘束部材１３とすればよく、このような形態のスプライスプレート９の場合には、座屈拘束部材１３を梁フランジ側にのみ配置したり、柱フランジ側のみに配置したり、梁フランジ側と柱フランジ側とに渡って配置する３形態が可能であり、前記長孔１０に重合する梁フランジ側または柱フランジ側の透孔は長孔としておけばよい。 Further, as shown in FIG. 10 (a), a trapezoidal groove-shaped notch 12 directed toward the center in the width direction is provided at the center in the longitudinal direction of the splice plate 9 to form a plasticized portion 11, and both axial sides thereof are formed. A wide portion having a long hole 10 for attaching the buckling restraining member 13 is provided on the outer side, and a wide hole having a bolt hole 28 for attaching to the flange on the column side or the flange on the beam side is provided outside the wide portion in the axial direction. The splice plate 9 may be provided with a mounting portion. In this case, the buckling restraining member 13 having a protruding portion 31 protruding in a trapezoidal shape on the inner side in the width direction may be used. In the case of 9, the buckling restraining member 13 can be arranged only on the beam flange side, arranged only on the column flange side, or arranged in the beam flange side and the column flange side. Ri, beam flange side or column flange side of the through hole polymerize the slot 10 it is sufficient to the long hole.
また、図１０（ａ）の変形形態として、図１０（ｂ）に示すように、塑性化部分１１の軸方向両側に座屈拘束部材１３を取付けるための長孔１０を有する広幅部を設けると共に、その広幅部の幅寸法でボルト孔２８を有する取り付け部まで延長するようにしてもよく、この場合には、長孔１０の直径寸法よりもボルト孔２８の直径寸法を小さくし、取り付け部では破壊されないようにする。図１０（ａ），（ｂ）のように座屈拘束部材１３をスプライスプレート９の塑性化部分１１に設ける場合、塑性化部分１１の梁軸方向両側の広幅部に長孔１０を設けて取付けることも可能である。 Further, as a modification of FIG. 10A, as shown in FIG. 10B, a wide-width portion having a long hole 10 for attaching the buckling restraining member 13 to both sides in the axial direction of the plasticized portion 11 is provided. In this case, the diameter dimension of the bolt hole 28 may be made smaller than the diameter dimension of the long hole 10, and Avoid being destroyed. When the buckling restraining member 13 is provided in the plasticized portion 11 of the splice plate 9 as shown in FIGS. 10A and 10B, the elongated holes 10 are provided in the wide portions on both sides in the beam axis direction of the plasticized portion 11 and attached. It is also possible.
本発明を実施する場合、柱５側の下フランジ７等のフランジと、梁下フランジ２等の梁フランジの表裏面（上下面）の片面側にスプライスプレート９を１枚配置し、その外側に座屈拘束部材１３を１つ配置する形態にも適用してもよい。 When practicing the present invention, one splice plate 9 is arranged on one side of the flanges such as the lower flange 7 on the column 5 side and the front and back surfaces (upper and lower surfaces) of the beam flange such as the beam lower flange 2 and the outside thereof. You may apply also to the form which arrange | positions one buckling restraint member 13. FIG.
また、本発明を実施する場合、座屈拘束部材１３の巾方向両端側におけるスプライスプレート巾方向変形拘束部材２３は、スプライスプレート９の形状に応じて適宜、座屈拘束部材１３の梁軸方向に部分的に設けることもできる。 Further, when the present invention is carried out, the splice plate width direction deformation restraining member 23 at both ends in the width direction of the buckling restraining member 13 is appropriately arranged in the beam axis direction of the buckling restraining member 13 according to the shape of the splice plate 9. It can also be provided partially.
本発明では、座屈拘束部材１３がスプライスプレート９の塑性化部分１１に取付られているので、座屈拘束部材１３を短い部材とすることができる。座屈拘束部材１３の一端部を柱側のフランジあるいは梁フランジに固定している場合はその分、座屈拘束部材１３が長くなり部材が大きくなる。座屈拘束部材１３の中間部を、スプライスプレート９の塑性化部分に取付けられていると、座屈拘束部材を短い部材とすることができる。 In the present invention, since the buckling restraining member 13 is attached to the plasticized portion 11 of the splice plate 9, the buckling restraining member 13 can be a short member. When one end of the buckling restraining member 13 is fixed to the column side flange or the beam flange, the buckling restraining member 13 becomes longer and the member becomes larger. When the intermediate portion of the buckling restraining member 13 is attached to the plasticized portion of the splice plate 9, the buckling restraining member can be a short member.
前記実施形態では、柱側に固定の外ダイアフラムをフランジ７として説明したが、本発明を実施形態する場合、柱側にＨ形鋼等のブラケットあるいはカットＴ形鋼等のスプリットティ（図示を省略した）を固定して、そのブラケットあるいはスプリットティにおけるフランジを、柱側のフランジとする形態にも、本発明を適用してもよい。 In the above embodiment, the outer diaphragm fixed to the column side is described as the flange 7. However, when the present invention is implemented, a bracket such as H-shaped steel or a split tee such as cut T-shaped steel is omitted on the column side (not shown). The present invention may also be applied to a form in which the flange on the bracket or split tee is fixed to the pillar side flange.
前記実施形態では、柱側フランジと、梁端部における梁せい方向（上下方向）の一端側（下側）について説明したが、本発明を実施する場合、梁端部における梁せい方向の両端側（上下両側）における梁フランジと柱側フランジとを、スプライスプレートを用いて接合する梁継手構造に適用してもよい。 In the above-described embodiment, the column side flange and one end side (lower side) of the beam ridge direction (vertical direction) at the beam end portion have been described. However, when implementing the present invention, both end sides of the beam ridge direction at the beam end portion. You may apply to the beam joint structure which joins the beam flange and column side flange in (upper and lower both sides) using a splice plate.
ところで、図１４（ａ）に示すように、コンクリート床スラブ２９と梁１とが一体化した合成梁３２（または梁１）に矢印Ｘで示す正曲げモーメントあるいは矢印Ｙで示す負曲げモーメントが作用した場合、合成梁３２の回転中心（中立軸）は正曲げ時と負曲げ時で異なり、矢印Ｘの正曲げ時の回転中心（中立軸）は、図１４（ｂ）に示すように合成梁３２の上部側のＸ１に位置し、矢印Ｙの負曲げ時では、回転中心（中立軸）は、図１４（ｃ）に示すようなＹ２の位置に下がる（ただし、デッキプレート３３の溝内に位置するコンクリートは無視している）。 Incidentally, as shown in FIG. 14A, a positive bending moment indicated by an arrow X or a negative bending moment indicated by an arrow Y acts on the composite beam 32 (or the beam 1) in which the concrete floor slab 29 and the beam 1 are integrated. In this case, the rotation center (neutral axis) of the composite beam 32 is different between positive bending and negative bending, and the rotation center (neutral axis) at the positive bending of the arrow X is the composite beam as shown in FIG. 32, the center of rotation (neutral axis) is lowered to the position of Y2 as shown in FIG. 14C (in the groove of the deck plate 33). I ignore the located concrete).
前記のような合成梁３２（または梁１）の回転は、図１３（ａ）に示すように、梁下フランジ２側の塑性化部分１１を有するスプライスプレート９における塑性化部分１１が伸びる（または縮む）ことで回転が可能になるが、図１３（ｂ）に示すように、柱５側に固定されるブラケット３４の上フランジ３５（または上ダイアフラム６）と下フランジ７（または下ダイアフラム）とに一体に固定されているウエブ３６と、梁１のウエブ４とを、これらにわたって配置されると共にボルト・ナット３８により固定される縦スプライスプレート３９を取り付けては梁３２（１）の回転ができなくなる。 As shown in FIG. 13A, the rotation of the composite beam 32 (or beam 1) as described above causes the plasticized portion 11 of the splice plate 9 having the plasticized portion 11 on the beam lower flange 2 side to extend (or As shown in FIG. 13B, the upper flange 35 (or the upper diaphragm 6) and the lower flange 7 (or the lower diaphragm) of the bracket 34 fixed to the column 5 side can be rotated. The web 32 and the web 4 of the beam 1 can be rotated by attaching the vertical splice plate 39 which is disposed over the web 36 and the web 4 of the beam 1 and is fixed by bolts and nuts 38. Disappear.
なお、スプライスプレート３０のせん断力の負担が大きくなる場合には、梁１に作用するせん断力を負担しこれを伝達するために、図１１および図１２に示す第２実施形態のように、塑性化部分１１を有するスプライスプレート９に間隔をおいて対向する梁上フランジ側において、柱側の上ダイアフラム６等の柱側の上フランジ３５と梁上フランジ８とにわたって配置される塑性化部分を有しないスプライスプレート３０（２０）に縦リブ４０，４１を設けて、その縦リブ４０，４１によりせん断力を負担し伝達するようにしてもよい。この場合、梁上フランジ８の上面側に配置されるスプライスプレート３０を断面逆Ｔ字状のスプライスプレート３０ａとし、梁上フランジ８の下面側に配置されるスプライスプレート３０を、断面Ｌ字状（図示の場合または図示省略の平板状）のスプライスプレート３０ｂとしてもよい。 In addition, when the load of the shearing force of the splice plate 30 increases, in order to bear the shearing force acting on the beam 1 and transmit it, plasticity is applied as in the second embodiment shown in FIGS. On the side of the upper flange of the beam facing the splice plate 9 having the bent portion 11 at an interval, there is a plasticized portion disposed across the upper flange 35 of the column side such as the upper diaphragm 6 of the column side and the upper flange 8 of the beam. The vertical ribs 40 and 41 may be provided on the splice plate 30 (20) that is not used, and the vertical ribs 40 and 41 may bear and transmit the shearing force. In this case, the splice plate 30 disposed on the upper surface side of the beam upper flange 8 is a splice plate 30a having an inverted T-shaped cross section, and the splice plate 30 disposed on the lower surface side of the beam upper flange 8 is L-shaped ( A splice plate 30b in the case of illustration or a flat plate not shown) may be used.
前記のように、梁上フランジ８側に配置されるスプライスプレート３０（３０ａ，３０ｂ）に縦リブ４０（４１）を設ける理由は、本発明の梁継手構造においては、梁の上下フランジの一方に塑性化部分を有するスプライスプレートを設け、他方には塑性化させないスプライスプレート（弾性域で使用する弾性スプライスプレート）を配置する構造であるため、図１３（ｂ）に示す従来構造のようにウエブ相互を縦向き配置のスプライスプレート３９で接合し固定すると、梁が回転できなくなったり、ウエブ４，３６の縦スプライスプレート３９が塑性化してしまうためウエブ同士を固定することができないため、また、本発明の梁継手構造においては、塑性化部分１１を有するスプライスプレート９における塑性化部分１１が塑性化した後、その塑性化したスプライスプレート９にはせん断力を負担できなくなるため、前記のように梁上フランジ側に配置されるスプライスプレート３０に縦リブ４０（４１）を設けて、せん断力を負担し伝達する機構にしている。なお、図示を省略するが、スプリットティにおける水平なフランジに縦リブを設けてせん断力を負担し伝達する機構にしてもよい。 As described above, the reason why the vertical rib 40 (41) is provided on the splice plate 30 (30a, 30b) arranged on the beam upper flange 8 side is that, in the beam joint structure of the present invention, it is provided on one of the upper and lower flanges of the beam. Since a splice plate having a plasticized portion is provided and a splice plate that is not plasticized (an elastic splice plate used in an elastic region) is disposed on the other side, the webs are mutually connected like the conventional structure shown in FIG. If the webs are joined and fixed by the splice plate 39 arranged vertically, the beam cannot be rotated or the vertical splice plates 39 of the webs 4 and 36 are plasticized so that the webs cannot be fixed to each other. In the above-mentioned beam joint structure, after the plasticized portion 11 in the splice plate 9 having the plasticized portion 11 is plasticized. Since the plasticized splice plate 9 cannot bear a shearing force, the vertical ribs 40 (41) are provided on the splice plate 30 arranged on the beam flange side as described above to bear and transmit the shearing force. It is a mechanism. In addition, although illustration is abbreviate | omitted, you may make it the mechanism which provides a vertical rib in the horizontal flange in a split tee, bears a shearing force, and transmits.
図１５から図１７（ａ）は、塑性化部分の横にボルト軸部を配置して、塑性化部分の巾方向の変形を抑える（拘束する）ようにした本発明の第３実施形態を示すものであって、座屈拘束部材１３を取付けるボルト１７の軸部４０を塑性化部分１１の横（巾方向側面）に当接または近接配置すると、塑性化部分１１の巾方向の変形を抑えることができ、また、座屈拘束部材１３を矩形厚板等の単純な形状にすることができ、塑性化部分１１の板厚方向の座屈を座屈拘束部材１３により、塑性化部分１１の巾方向の変形抑制（座屈拘束）をボルト１７により機能させることができる。塑性化部分１１を有するスプライスプレート９および座屈拘束部材１３を梁下フランジ２の上面側に配置する形態でも同様である。 FIGS. 15 to 17 (a) show a third embodiment of the present invention in which a bolt shaft portion is arranged beside the plasticized portion to suppress (restrain) deformation in the width direction of the plasticized portion. If the shaft portion 40 of the bolt 17 for attaching the buckling restraining member 13 is in contact with or placed close to the side (width direction side surface) of the plasticized portion 11, deformation in the width direction of the plasticized portion 11 is suppressed. In addition, the buckling restraining member 13 can be formed in a simple shape such as a rectangular thick plate, and the buckling in the thickness direction of the plasticized portion 11 can be reduced by the buckling restraining member 13 in the width of the plasticized portion 11. Directional deformation suppression (buckling constraint) can be caused to function by the bolt 17. The same applies to a form in which the splice plate 9 having the plasticized portion 11 and the buckling restraining member 13 are arranged on the upper surface side of the under-beam flange 2.
前記のように座屈拘束部材１３を取付けるボルト１７の軸部４２を塑性化部分１１の横に当接または近接配置するためには、単に、前記ボルト１７の横方向の移動を拘束する梁下フランジ２側の長孔（または円形孔）３または座屈拘束部材１３側のボルト孔１５を、塑性化部分１１の横に位置するように設けて支承するようにすればよい。 In order to place the shaft portion 42 of the bolt 17 that attaches the buckling restraining member 13 in contact with or close to the side of the plasticized portion 11 as described above, simply below the beam that restrains the lateral movement of the bolt 17. The long hole (or circular hole ) 3 on the flange 2 side or the bolt hole 15 on the buckling restraining member 13 side may be provided and supported so as to be located beside the plasticized portion 11.
また、図１７（ａ）の変形形態として、図１７（ｂ）に示すように、前記ボルト１７の軸部４２に鋼製等の筒状リング４３を嵌合し、その筒状リング４３の外周面を塑性化部分１１に当接または近接配置するようにしてもよい。なお、前記の筒状リング４３の高さ寸法を塑性化部分１１の板厚寸法よりも若干高くしておくと、座屈拘束部材１３と塑性化部分１１を有するスプライスプレート９を非付着状態にするための間隙を容易に形成する筒状スペーサとして機能させることもできる。 As a modification of FIG. 17A, as shown in FIG. 17B, a tubular ring 43 made of steel or the like is fitted to the shaft portion 42 of the bolt 17, and the outer periphery of the tubular ring 43. The surface may be disposed in contact with or close to the plasticized portion 11. If the height of the cylindrical ring 43 is set slightly higher than the thickness of the plasticized portion 11, the splice plate 9 having the buckling restraining member 13 and the plasticized portion 11 is brought into a non-adhered state. It is also possible to function as a cylindrical spacer that easily forms a gap for this purpose.
本発明を実施する場合、図１１に示す縦リブ４０，４１の形態を前記した各実施形態に適宜適用してもよい。また、図１６および図１７に示す塑性化部分１１の巾方向の変形を拘束する形態を適宜適用してもよい。なお、その他の構成は、前記実施形態と同様であるので、同様な部分には、同様な符号を付して説明を省略する。 When practicing the present invention, the form of the vertical ribs 40 and 41 shown in FIG. 11 may be appropriately applied to each of the above-described embodiments. Moreover, you may apply suitably the form which restrains the deformation | transformation of the width direction of the plasticized part 11 shown in FIG. 16 and FIG. Since other configurations are the same as those in the above-described embodiment, the same portions are denoted by the same reference numerals and the description thereof is omitted.
１ 梁
２ 梁下フランジ
３ 長孔（または円形孔）
４ ウエブ
５ 柱
６ 上ダイアフラム
７ 下フランジ
８ 梁の上フランジ
９ スプライスプレート
１０ 長孔
１１ 塑性化部分
１２ 切り欠き
１３ 座屈拘束部材
１４ 薄い弾性層または付着防止被膜
１５ ボルト孔
１６ ボルト
１７ ボルト
１８ ボルト孔
１９ ボルト孔
２０ 継手部材
２１ 座屈拘束部材本体
２２ 補剛リブ
２３ スプライスプレート幅方向変形拘束部材
２４ 補剛リブ
２５ 補剛リブ付スプライスプレート
２６ 添板
２７ 取付部
２８ ボルト孔
２９ 床スラブ
３０ スプライスプレート
３１ 台形状に突出する部分
３２ 合成梁
３３ デッキプレート
３４ ブラケット
３５ 上フランジ
３６ ウエブ
３７ 縦スプライスプレート
３８ ボルト・ナット
３９ 縦スプライスプレート
４０ 縦リブ
４１ 縦リブ
４２ 軸部
４３ 筒状リング
1 Beam 2 Beam under flange 3 Long hole (or circular hole)
4 Web 5 Column 6 Upper diaphragm 7 Lower flange 8 Beam upper flange 9 Splice plate 10 Long hole 11 Plasticized portion 12 Notch 13 Buckling restraining member 14 Thin elastic layer or adhesion preventing coating 15 Bolt hole 16 Bolt 17 Bolt 18 Bolt Hole 19 Bolt hole 20 Joint member 21 Buckling restraint member main body 22 Stiffening rib 23 Splice plate width direction deformation restraining member 24 Stiffening rib 25 Splice plate with stiffening rib 26 Attachment plate 27 Mounting portion 28 Bolt hole 29 Floor slab 30 Splice Plate 31 Trapezoidal portion 32 Composite beam 33 Deck plate 34 Bracket 35 Upper flange 36 Web 37 Vertical splice plate 38 Bolt / nut 39 Vertical splice plate 40 Vertical rib 41 Vertical rib 42 Shaft 43 Cylindrical ring
Claims (7)
その拘束部材本体の表裏両側に突出すると共に梁軸方向に連続した補剛リブが間隔をおいて平行に一体に設けられ、スプライスプレート側である内表面側に突出する前記補剛リブはスプライスプレート巾方向変形拘束部材であり、前記補剛リブ間の内側間隔寸法は、スプライスプレートにおける塑性化部分の巾寸法よりも若干大きく設定されて、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、スプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする梁継手構造。 In a beam joint structure in which a beam flange is joined to a column side flange by a fixing means via a splice plate having a plasticized portion in the middle portion, the buckling of the plasticized portion is constrained to the plasticized portion of the splice plate. A separate buckling restraining member is provided, and a gap is provided between the plasticized portion and the buckling restraining member by an adhesion preventing layer or the like, on either one of the front surface or the back surface of the column side flange and the beam flange. The splice plate is disposed, and a buckling restraining member is disposed outside the splice plate. The buckling restraining member includes a flat buckling restraining member main body, and the width direction of the flat buckling restraining member main body. At both ends,
The stiffening ribs projecting on both the front and back sides of the restraining member main body and continuously provided in parallel with a gap in the beam axis direction are integrally provided in parallel with each other. It is a width direction deformation restraining member, the inner distance between the stiffening ribs is set slightly larger than the width of the plasticized portion in the splice plate ,
2. The beam joint structure according to claim 1, wherein the buckling restraining member includes a portion for restraining buckling deformation in the thickness direction of the splice plate and a portion for restraining deformation in the width direction of the splice plate .
その拘束部材本体の表裏両側に突出すると共に梁軸方向に連続した補剛リブが間隔をおいて平行に一体に設けられ、スプライスプレート側である内表面側に突出する前記補剛リブはスプライスプレート巾方向変形拘束部材であり、前記補剛リブ間の内側間隔寸法は、スプライスプレートにおける塑性化部分の巾寸法よりも若干大きく設定されて、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、スプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする梁継手構造。 In a beam joint structure in which a beam flange is joined to a column side flange by a fixing means via a splice plate having a plasticized portion in the middle portion, the buckling of the plasticized portion is constrained to the plasticized portion of the splice plate. A separate buckling restraining member is provided, and a gap is provided between the plasticized portion and the buckling restraining member by an adhesion preventing layer or the like, and a splice plate is provided on both the front and back surfaces of the column side flange and the beam flange. The buckling restraining member is disposed outside the splice plate, and the buckling restraining member includes a flat plate-like buckling restraining member main body at both ends in the width direction of the flat buckling restraining member main body. Is
The stiffening ribs projecting on both the front and back sides of the restraining member main body and continuously provided in parallel with a gap in the beam axis direction are integrally provided in parallel with each other. It is a width direction deformation restraining member, the inner distance between the stiffening ribs is set slightly larger than the width of the plasticized portion in the splice plate ,
2. The beam joint structure according to claim 1, wherein the buckling restraining member includes a portion for restraining buckling deformation in the thickness direction of the splice plate and a portion for restraining deformation in the width direction of the splice plate .
前記ボルトの横方向の移動を拘束する梁下フランジ側の孔または座屈拘束部材側のボルト孔を、塑性化部分の横に位置するように設けてボルト軸部を支承して、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、前記複数のボルト軸部によるスプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする梁継手構造。 In a beam joint structure in which a beam flange is joined to a column side flange by a fixing means via a splice plate having a plasticized portion in the middle portion, the buckling of the plasticized portion is constrained to the plasticized portion of the splice plate. A separate buckling restraining member is provided, a gap is provided between the plasticized portion and the buckling restraining member by an adhesion prevention layer or the like, and the splice plate is disposed on the flange on the column side and the beam flange. A buckling restraining member is disposed outside the splice plate, and a plurality of bolt shaft portions spaced at intervals for attaching the buckling restraining member are respectively brought into contact with or proximate to both side surfaces in the width direction of the plasticized portion,
A bolt hole on the lower flange side of the beam or a bolt hole on the buckling restraining member side that restrains the lateral movement of the bolt is provided so as to be located beside the plasticized portion, and the bolt shaft portion is supported,
The buckling restraining member includes a portion for restraining buckling deformation in the thickness direction of the splice plate and a portion for restraining deformation in the width direction of the splice plate by the plurality of bolt shaft portions. And beam joint structure.
前記ボルトの横方向の移動を拘束する梁下フランジ側の孔または座屈拘束部材側のボルト孔を、塑性化部分の横に位置するように設けてボルト軸部を支承して、
前記座屈拘束部材には、スプライスプレートの厚さ方向の座屈変形を拘束する部分と、前記複数のボルト軸部の外側に嵌合配置した筒状リングによるスプライスプレートの巾方向の変形を拘束する部分とを備えていることを特徴とする梁継手構造。 In a beam joint structure in which a beam flange is joined to a column side flange by a fixing means via a splice plate having a plasticized portion in the middle portion, the buckling of the plasticized portion is constrained to the plasticized portion of the splice plate. A separate buckling restraining member is provided, a gap is provided between the plasticized portion and the buckling restraining member by an adhesion prevention layer or the like, and the splice plate is disposed on the flange on the column side and the beam flange. A buckling restraining member is arranged on the outer side of the splice plate, and a plurality of bolts spaced at intervals for attaching the buckling restraining member are fitted with a cylindrical ring on the outer side of each bolt shaft portion. In addition, the cylindrical rings fitted to the respective bolt shaft portions are respectively brought into contact with or close to both side surfaces in the width direction of the plasticized portion, and the height dimensions of the respective cylindrical rings are Serial is slightly higher than the height of the plasticized partial,
A bolt hole on the lower flange side of the beam or a bolt hole on the buckling restraining member side that restrains the lateral movement of the bolt is provided so as to be located beside the plasticized portion, and the bolt shaft portion is supported,
The buckling restraining member restrains deformation in the width direction of the splice plate by a portion that restrains buckling deformation in the thickness direction of the splice plate and a cylindrical ring that is fitted and arranged outside the plurality of bolt shaft portions. beam joint structure characterized by comprising a portion.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004046460A JP4376088B2 (en) | 2003-02-28 | 2004-02-23 | Beam joint structure |
| TW093105122A TWI237082B (en) | 2003-02-28 | 2004-02-27 | A beam coupling device |
| PCT/JP2004/002372 WO2004076761A1 (en) | 2003-02-28 | 2004-02-27 | Beam joint device |
| US10/546,108 US20060144006A1 (en) | 2003-02-28 | 2004-02-27 | Beam joint device |
| HK06106014A HK1086050A1 (en) | 2003-02-28 | 2006-05-25 | Beam joint device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2003054088 | 2003-02-28 | ||
| JP2004046460A JP4376088B2 (en) | 2003-02-28 | 2004-02-23 | Beam joint structure |
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| JP2004278293A JP2004278293A (en) | 2004-10-07 |
| JP4376088B2 true JP4376088B2 (en) | 2009-12-02 |
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| US (1) | US20060144006A1 (en) |
| JP (1) | JP4376088B2 (en) |
| HK (1) | HK1086050A1 (en) |
| TW (1) | TWI237082B (en) |
| WO (1) | WO2004076761A1 (en) |
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-
2004
- 2004-02-23 JP JP2004046460A patent/JP4376088B2/en active Active
- 2004-02-27 WO PCT/JP2004/002372 patent/WO2004076761A1/en active Application Filing
- 2004-02-27 US US10/546,108 patent/US20060144006A1/en not_active Abandoned
- 2004-02-27 TW TW093105122A patent/TWI237082B/en not_active IP Right Cessation
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2006
- 2006-05-25 HK HK06106014A patent/HK1086050A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004076761A1 (en) | 2004-09-10 |
| TWI237082B (en) | 2005-08-01 |
| US20060144006A1 (en) | 2006-07-06 |
| HK1086050A1 (en) | 2006-09-08 |
| TW200426281A (en) | 2004-12-01 |
| JP2004278293A (en) | 2004-10-07 |
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