JP4649360B2 - Seismic joint structure and construction method thereof - Google Patents

Seismic joint structure and construction method thereof Download PDF

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JP4649360B2
JP4649360B2 JP2006106342A JP2006106342A JP4649360B2 JP 4649360 B2 JP4649360 B2 JP 4649360B2 JP 2006106342 A JP2006106342 A JP 2006106342A JP 2006106342 A JP2006106342 A JP 2006106342A JP 4649360 B2 JP4649360 B2 JP 4649360B2
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joint
plate
steel
steel beam
steel column
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JP2007277952A (en
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康 市川
秀章 吉川
章 和田
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Nippon Steel Corp
Nippon Steel Engineering Co Ltd
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Nippon Steel Engineering Co Ltd
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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
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0237—Structural braces with damping devices
    • 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
    • E04H9/028—Earthquake withstanding shelters

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Description

本発明は、構造部材への耐震用接合構造及びその構築方法に関する。   The present invention relates to an earthquake-resistant joint structure to a structural member and a construction method thereof.

構造物の耐震補強のためにブレース等の耐震補強用部材を柱梁の交差部に接合する耐震補強工法が実施されている。   A seismic reinforcement method for joining seismic reinforcement members such as braces to the intersections of column beams has been implemented for seismic reinforcement of structures.

従来においては、柱と梁にブレースを接合する場合には、ガセットプレートを介して行うのが一般的であった。特許文献１には、例えば図７に示すように柱１０１と梁１０２のそれぞれに、ブレース材１０３との接合用の柱側ガセットプレート１１０と梁側ガセットプレート１１１を設ける構成が開示されている。この柱側ガセットプレート１１０と、梁側ガセットプレート１１１の形状は、正面細長の長方形に形成されてなる。そして、柱側ガセットプレート１１０は、柱が鋼管柱の場合、鋼管ウェブの対向する２箇所から、先端が狭まるようにしてブレース材１０３の方向に向けて、合計２枚を突出させ、また、梁側ガセットプレート１１１は梁１０２を構成するＨ鋼の上部中心から垂直に殖設されてなる。また、ブレース材１０３の側には、エンドプレート１０８を備えたガセットプレート１１２を接合する。   In the past, when braces were joined to columns and beams, it was common to use gusset plates. For example, Patent Document 1 discloses a configuration in which a column side gusset plate 110 and a beam side gusset plate 111 for joining to a brace material 103 are provided on each of a column 101 and a beam 102 as shown in FIG. The column-side gusset plate 110 and the beam-side gusset plate 111 are formed in a front elongated rectangle. When the column is a steel pipe column, the column-side gusset plate 110 projects a total of two pieces from the two opposing portions of the steel pipe web toward the brace material 103 so that the tip is narrowed. The side gusset plate 111 is vertically laid from the upper center of the H steel constituting the beam 102. A gusset plate 112 having an end plate 108 is joined to the brace material 103 side.

耐震用部材を柱梁の交差部に接合金具を溶接により接合した場合には、柱梁の変形が拘束されるため、構造物全体の変形性能が低下してしまう。特に日本の耐震設計においては、この変形性能を大きくすることができれば、構造特性係数（Ｄｓ値）を向上させることができ、ひいては２次設計における地震力を低減させることが可能となる。   When the seismic member is joined to the intersection of the column beam by welding, the deformation of the column beam is constrained, so that the deformation performance of the entire structure is deteriorated. In particular, in Japanese seismic design, if this deformation performance can be increased, the structural characteristic coefficient (Ds value) can be improved, and as a result, the seismic force in the secondary design can be reduced.

一般に、地震力を低減させる場合において、純ラーメン構造では、層間変形角につき１／３０以上要求される。この層間変形角とは、各階に生ずる水平方向の層間変位の当該各階の高さに対する割合である。例えば図８に示すように、水平方向の層間変位をδとし、さらに各階の高さをｈとしたとき、層間変形角は、δ／ｈで表される。   Generally, in the case of reducing the seismic force, the pure ramen structure requires 1/30 or more per interlayer deformation angle. The interlayer deformation angle is the ratio of the horizontal interlayer displacement occurring on each floor to the height of each floor. For example, as shown in FIG. 8, when the interlayer displacement in the horizontal direction is δ and the height of each floor is h, the interlayer deformation angle is represented by δ / h.

ちなみに、ブレース付きのラーメン構造の変形性能についても同様に、１／３０以上の層間変形角が要求されることになる。   Incidentally, an interlayer deformation angle of 1/30 or more is also required for the deformation performance of the braided ramen structure.

この１／３０の層間変形角は、純ラーメン構造であれば溶接方法の工夫等で実現可能である。しかしながら、ブレース用のガセットプレートをラーメン構造に取り付ける場合には、可撓長さが短くなることや、ガセットプレート始端での応力集中により、層間変形角１／３０以上の変形性能を確保することが難しい。
特開２０００−１８６３７１号公報 This 1/30 interlayer deformation angle can be realized by a contrivance of a welding method or the like if it is a pure ramen structure. However, when a gusset plate for braces is attached to a ramen structure, it is possible to secure a deformation performance with an interlayer deformation angle of 1/30 or more due to a shortened flexible length and stress concentration at the gusset plate start end. difficult.
JP 2000-186371 A

そこで、本発明は、上述した問題点に鑑みて案出されたものであり、その目的とするところは、鉄筋構造物を新たに建造する際に、ブレース等の耐震用部材を柱梁の交差部に接合する時、層間変形角を１／３０以上持たせることにより耐震性をより向上させた耐震用接合構造及びその構築方法を提供することにある。   Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to provide an earthquake-resistant member such as a brace when a rebar structure is newly constructed. An object of the present invention is to provide a seismic joint structure for improving seismic resistance by providing an interlayer deformation angle of 1/30 or more and a construction method thereof.

本発明に係る耐震用接合構造は、上述した課題を解決するために、略鉛直方向に延設された鉄骨柱と略水平方向に延設された鉄骨梁の交差部に、耐震用部材を接合するための接合金具における互いに直交する向きに取り付けられた第１の接合プレートと第２の接合プレートとが、当該鉄骨柱及び当該鉄骨梁に対しては非固定とした上で当接され、この第１の接合プレート又は第２の接合プレートの端部に当接させて、当該接合金具に作用する力に抵抗する移動拘束部材を前記鉄骨柱並びに前記鉄骨梁にそれぞれ設けたことを特徴とする。   In order to solve the above-described problems, an earthquake-resistant joint structure according to the present invention joins an earthquake-resistant member to an intersection of a steel column extending in a substantially vertical direction and a steel beam extending in a substantially horizontal direction. The first joining plate and the second joining plate that are attached in a direction orthogonal to each other in the joining bracket for making contact with the steel column and the steel beam are brought into contact with each other after being fixed. The steel column and the steel beam are each provided with a movement restraining member that is brought into contact with the end of the first joint plate or the second joint plate and resists the force acting on the joint fitting. .

また、本発明に係る耐震用接合構造の構築方法は、上述した課題を解決するために、略鉛直方向に延設された鉄骨柱と略水平方向に延設された鉄骨梁の交差部に、耐震用部材を接合するための接合金具における互いに直交する向きに取り付けられた第１の接合プレートと第２の接合プレートを、当該鉄骨柱及び当該鉄骨梁に対しては非固定とした上で当接させ、この第１の接合プレート又は第２の接合プレートの端部に当接させて、当該接合金具に作用する力に抵抗する移動拘束部材を前記鉄骨柱並びに前記鉄骨梁にそれぞれ設けることを特徴とする。   In addition, in order to solve the above-described problem, the construction method of the earthquake-resistant joint structure according to the present invention includes a steel column extended in a substantially vertical direction and a crossing portion of a steel beam extended in a substantially horizontal direction. The first joint plate and the second joint plate, which are attached in the direction perpendicular to each other in the joint fitting for joining the seismic member, are fixed to the steel column and the steel beam and are not fixed. A movement restraining member that is brought into contact with and is brought into contact with an end of the first joining plate or the second joining plate and resists a force acting on the joining fitting is provided in each of the steel column and the steel beam. Features.

本発明では、略鉛直方向に延設された鉄骨柱と略水平方向に延設された鉄骨梁の交差部に、耐震用部材を接合するための接合金具における互いに直交する向きに取り付けられた第１の接合プレートと第２の接合プレートを、当該鉄骨柱及び当該鉄骨梁に対しては非固定とした上で当接させ、この第１の接合プレート又は第２の接合プレートの端部に当接させて、当該接合金具に作用する力に抵抗する移動拘束部材を前記鉄骨柱並びに前記鉄骨梁にそれぞれ設ける。   In the present invention, the first fitting attached to the joining bracket for joining the seismic member is attached to the intersecting portion of the steel column extending in the substantially vertical direction and the steel beam extending in the substantially horizontal direction. The first joining plate and the second joining plate are brought into contact with the steel column and the steel beam without being fixed, and are brought into contact with the ends of the first joining plate or the second joining plate. A movement restraining member that resists the force acting on the joint fitting is provided on each of the steel column and the steel beam.

これにより、本発明は、大きな地震が発生した場合において、第２の接合プレートは鉄骨梁に非固定で当接されているのみであるため、地震により上下に屈曲しようとする鉄骨梁が第２の接合プレートにより拘束されることはなくなる。その結果、鉄骨梁の変形性能そのものを向上させることができ、ひいては層間変形角を１／３０以上に至るまで高めることができる。   As a result, in the present invention, when a large earthquake occurs, the second joining plate is only in non-fixed contact with the steel beam, so that the steel beam to be bent up and down by the earthquake is the second. It is not restrained by the joining plate. As a result, the deformation performance itself of the steel beam can be improved, and the interlayer deformation angle can be increased to 1/30 or more.

同様に、鉄骨柱が左右に振動する場合においても、第１の接合プレートは、鉄骨柱に対して非固定で当接されているのみであるため、地震により左右に屈曲しようとする鉄骨柱が第１の接合プレートにより拘束されることがなくなり、建物全体の変形性能をも高めることが可能となる。   Similarly, even when the steel column vibrates left and right, the first joining plate is only in non-fixed contact with the steel column. It is not restrained by the first joining plate, and the deformation performance of the entire building can be improved.

以下、本発明を実施するための最良の形態として、鉄筋構造物への耐震用接合構造につき、図面を参照しながら詳細に説明をする。   Hereinafter, as a best mode for carrying out the present invention, an earthquake-resistant joint structure to a reinforcing bar structure will be described in detail with reference to the drawings.

図１に角形鋼管からなる鉄骨柱１とＨ型の鉄骨梁２の２つの構造部材を交差させる実施例１を、図２(a)は、この図１におけるＡ−Ａ断面図であり、図２(b)は、この図１におけるＢ−Ｂ断面図である。この実施例１において、ブレース等の耐震用部材４を鉄骨柱１と鉄骨梁２の交差部に接合するための接合金具５は、鉄骨柱１の面に接合される第１の接合プレート６とコンクリートスラブ３の上に載置される第２の接合プレート７と、第１の接合プレート６と第２の接合プレート７のそれぞれに対して直交する向きに溶接されるガセットプレート８により構成される。ガセットプレート８には、ブレース等の耐震用部材４がスプライスプレート１０を介して連結ボルト１１により連結される。   FIG. 2A is a cross-sectional view taken along line AA in FIG. 1, showing Example 1 in which two structural members of a steel column 1 made of a square steel pipe and an H-shaped steel beam 2 are crossed. 2 (b) is a cross-sectional view taken along the line BB in FIG. In the first embodiment, a joining metal fitting 5 for joining an earthquake-resistant member 4 such as a brace to an intersection of a steel column 1 and a steel beam 2 includes a first joining plate 6 joined to the surface of the steel column 1 and It is comprised by the 2nd joining plate 7 mounted on the concrete slab 3, and the gusset plate 8 welded in the direction orthogonal to each of the 1st joining plate 6 and the 2nd joining plate 7. . The gusset plate 8 is connected to an earthquake-resistant member 4 such as a brace by a connecting bolt 11 via a splice plate 10.

第１の接合プレート６は鉄骨柱１に対して、溶接等の手段を介して固定することなく、あくまで非固定で当接されているのみである。第２の接合プレート７についても同様に、鉄骨梁２に対して、溶接等の手段を介して固定することなく、あくまで非固定で当接されているのみである。本来、接合金具５は、地震時等に耐震用部材４に作用する引張力を鉄骨柱１と鉄骨梁２に伝達するためのものであるから、鉄骨柱１と鉄骨梁２の両方に固定する必要があり、第１の接合プレート６や第２の接合プレート７を鉄骨柱１や鉄骨梁２に非固定で当接しただけでは、耐震用部材４からの引張力を鉄骨柱１や鉄骨梁２に伝達することができない。   The 1st joining plate 6 is only contact | abutted by the non-fixing to the steel column 1 without fixing through means, such as welding. Similarly, the second bonding plate 7 is not fixed to the steel beam 2 through welding or the like, but is merely non-fixed. Originally, the joint fitting 5 is for transmitting a tensile force acting on the seismic member 4 during an earthquake or the like to the steel column 1 and the steel beam 2, and is thus fixed to both the steel column 1 and the steel beam 2. It is necessary, and the tensile force from the seismic member 4 is applied to the steel column 1 or the steel beam only by bringing the first joint plate 6 or the second joint plate 7 into non-fixed contact with the steel column 1 or the steel beam 2. 2 can not be transmitted.

そこで、本実施例では、耐震用部材４の引張力が接合金具５に作用するとき、その引張力は接合金具５を引き上げる方向の垂直分力と横方向に作用する水平分力として作用することに着目した。即ち、本実施例においては、かかる垂直分力、水平分力に抵抗する部材を鉄骨柱１や鉄骨梁２に設けることにより、これを軸力として伝達できるように構成したものである。   Therefore, in this embodiment, when the tensile force of the seismic member 4 acts on the joint fitting 5, the tensile force acts as a vertical component force in the direction of pulling up the joint fitting 5 and a horizontal component force acting in the lateral direction. Focused on. That is, in the present embodiment, a member that resists such vertical component force and horizontal component force is provided on the steel column 1 or the steel beam 2 so that it can be transmitted as an axial force.

具体的には、第１の接合プレート６の端部６ａに当接させた鋼板プレートからなる移動拘束部材１４を鉄骨柱１の側面に固着する。また、第２の接合プレート７の端部７ａに当接させた鋼板プレートからなる移動拘束部材１５を鉄骨梁２の上面に固着する。   Specifically, the movement restraining member 14 made of a steel plate brought into contact with the end portion 6 a of the first joining plate 6 is fixed to the side surface of the steel column 1. Further, the movement restraining member 15 made of a steel plate brought into contact with the end portion 7 a of the second joining plate 7 is fixed to the upper surface of the steel beam 2.

移動拘束部材１４、１５は、所定の厚みと大きさ（面積）を有する矩形の鋼板プレートからなり、隅肉溶接４１等で鉄骨柱１や鉄骨梁２に固定されている。なお、この隅肉溶接４１の代替として、例えば、ボルト等を介して接合するようにしてもよい。   The movement restraining members 14 and 15 are formed of rectangular steel plate plates having a predetermined thickness and size (area), and are fixed to the steel column 1 and the steel beam 2 by fillet welds 41 and the like. In addition, as an alternative to the fillet weld 41, for example, it may be joined via a bolt or the like.

移動拘束部材１４の端部１６で第１の接合プレート６の端部６ａに作用する垂直力を受け、また移動拘束部材１５の端部１７で第２の接合プレート７の端部７ａに作用する水平力を受けるため、これら第１の接合プレート並びに第２の接合プレート７と、移動拘束部材１４、１５の端面同士は、同一レベルに設置するのが望ましい。   The end 16 of the movement restraining member 14 receives a normal force acting on the end 6 a of the first joining plate 6, and the end 17 of the moving restraining member 15 acts on the end 7 a of the second joining plate 7. In order to receive a horizontal force, it is desirable that the first joining plate and the second joining plate 7 and the end faces of the movement restraining members 14 and 15 are installed at the same level.

即ち、地震時にブレース等からなる耐震用部材４に作用する引張力により、接合金具５の第１の接合プレート６と第２の接合プレート７に垂直力と水平力が作用し、垂直力は移動拘束部材１４で受け、水平力は移動拘束部材１５で受け、さらに移動拘束部材１４、１５から鉄骨柱１や鉄骨梁２に軸力として伝えることができる。   That is, a vertical force and a horizontal force act on the first joint plate 6 and the second joint plate 7 of the joint metal fitting 5 due to the tensile force acting on the earthquake-resistant member 4 made of braces or the like during an earthquake, and the vertical force moves. The horizontal force can be received by the restraining member 14 and can be transmitted from the movement restraining members 14 and 15 to the steel column 1 and the steel beam 2 as an axial force.

なお、移動拘束部材１４の端部１６に作用する略水平方向の力により、該移動拘束部材１４が局部的に曲がるのを防止するため、また移動拘束部材１５の端部１７に作用する上向きの力により、該移動拘束部材１５が局部的に曲がるのを防止するため、図３、４に示す実施例２のように、移動拘束部材１５、１６の上面に補剛リブ２０を設けるようにしてもよい。補剛リブ２０は、剛性確保、跳ね上がり防止の２つの機能を目的として配設するものであって、補剛リブ２０の高さや幅や数は剛性確保の必要から設定するのがよい。   In addition, in order to prevent the movement restraining member 14 from being bent locally by the substantially horizontal force acting on the end portion 16 of the movement restraining member 14, and the upward force acting on the end portion 17 of the movement restraining member 15. In order to prevent the movement restraining member 15 from being locally bent by force, a stiffening rib 20 is provided on the upper surface of the movement restraining members 15 and 16 as in the second embodiment shown in FIGS. Also good. The stiffening ribs 20 are arranged for the purpose of ensuring rigidity and preventing jumping, and the height, width, and number of the stiffening ribs 20 are preferably set to ensure rigidity.

この図３は、実施例２の側面図を示しており、図４(a)は、この図３におけるＡ−Ａ断面図であり、図４(b)は、この図１におけるＢ−Ｂ断面図である。   3 shows a side view of the second embodiment. FIG. 4 (a) is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 4 (b) is a cross-sectional view taken along the line BB in FIG. FIG.

前記のとおり実施例１の耐震用接合構造によると、耐震用部材４の引張力により接合金具５にかかる垂直力、水平力を鉄骨柱１、鉄骨梁２の軸力で受けることができる。さらに、耐震用部材４には圧縮力が作用する場合があるが、実施例１において、接合金具５は、第１の接合プレート６並びに第２の接合プレート７を介して鉄骨柱１、鉄骨梁２に接触しているため、この圧縮力により接合金具５に作用する力を構造部材（鉄骨柱１及び鉄骨梁２）に支圧力として伝達することができる。   As described above, according to the earthquake resistant joint structure of the first embodiment, the vertical force and horizontal force applied to the joint metal fitting 5 by the tensile force of the earthquake resistant member 4 can be received by the axial force of the steel column 1 and the steel beam 2. Furthermore, there is a case where a compressive force acts on the seismic member 4, but in the first embodiment, the joint fitting 5 is connected to the steel column 1, the steel beam via the first joint plate 6 and the second joint plate 7. 2, the force acting on the joint fitting 5 by this compressive force can be transmitted as a support pressure to the structural members (steel column 1 and steel beam 2).

その際、この伝達された支圧力のうちの鉛直成分は、鉄骨梁２のウエブを介して鉄骨柱１に伝達されるので、鉄骨梁２は柱梁接合部付近において、この鉛直成分の力を十分伝達可能な強度と剛性が必要となり、必要に応じてウエブを補強する場合もある。   At this time, the vertical component of the transmitted support pressure is transmitted to the steel column 1 via the web of the steel beam 2, so that the steel beam 2 exerts the force of this vertical component in the vicinity of the column beam joint. Sufficiently strong strength and rigidity are required, and the web may be reinforced as necessary.

また、本発明を適用した耐震用接合構造では、層間変形角１／３０以上の変形性能を持たせることができる。   Moreover, in the earthquake-resistant joint structure to which the present invention is applied, it is possible to have a deformation performance with an interlayer deformation angle of 1/30 or more.

図５は、大きな地震が発生した場合において、建物が水平変形している時の柱梁交差部の変形形態を示している。第２の接合プレート７は鉄骨梁２に非固定で当接されているのみであるため、図５に示すように地震により上下に屈曲しようとする鉄骨梁２が第２の接合プレート７により拘束されることはなくなる。その結果、鉄骨梁２の変形性能そのものを向上させることができ、ひいては層間変形角を１／３０以上に至るまで高めることができる。   FIG. 5 shows a deformation mode of the column beam intersection when the building is horizontally deformed when a large earthquake occurs. Since the second joining plate 7 is only in non-fixed contact with the steel beam 2, the steel beam 2 to be bent up and down by an earthquake is restrained by the second joining plate 7 as shown in FIG. 5. Will never be done. As a result, the deformation performance itself of the steel beam 2 can be improved, and the interlayer deformation angle can be increased to 1/30 or more.

同様に鉄骨柱１が左右に振動する場合においても、第１の接合プレート６は、鉄骨柱１に対して非固定で当接されているのみであるため、地震により左右に屈曲しようとする鉄骨柱１が第１の接合プレート６により拘束されることがなくなる。   Similarly, even when the steel column 1 vibrates left and right, the first joining plate 6 is only in non-fixed contact with the steel column 1, so that the steel frame that is to be bent left and right by an earthquake is used. The pillar 1 is not restrained by the first joining plate 6.

即ち、この鉄骨柱１と鉄骨梁２の交差部において、仮に従来の如く接合金具が固定されていると、これに変形が拘束されることになり、鉄骨柱１、２の見かけ上の剛性が高くなるところ、変形性能が落ちてしまう。これに対して、本発明は、あえて第１の接合プレート６（第２の接合プレート７）を鉄骨柱１（鉄骨梁２）に非固定で当接のみさせるとによりこれを回避し、変形性能を向上させることによる耐震性の向上を図ることが可能となる。   That is, at the intersection of the steel column 1 and the steel beam 2, if a joint metal fitting is fixed as in the prior art, deformation is constrained by this, and the apparent rigidity of the steel columns 1 and 2 is reduced. When it gets higher, the deformation performance falls. In contrast, the present invention avoids this by making the first joining plate 6 (second joining plate 7) abut only on the steel column 1 (steel beam 2) in a non-fixed manner, so that deformation performance can be avoided. It is possible to improve the earthquake resistance by improving.

また、第１の接合プレート６（第２の接合プレート７）を鉄骨柱１（鉄骨梁２）に非固定で当接のみさせる場合においても、耐震用部材４から負荷される圧縮力を支圧力として伝達することができ、また、耐震用部材４の引張力についても上述したメカニズムに基づいて、鉄骨柱１、鉄骨梁２の軸力で受けることが可能となることから、耐震性の向上に焦点を当てて上述の如き構成にすることによる弊害を除去することも可能となる。   Further, even when the first joining plate 6 (second joining plate 7) is brought into non-fixed contact only with the steel column 1 (steel beam 2), the compressive force applied from the earthquake-resistant member 4 is supported. In addition, the tensile force of the seismic member 4 can be received by the axial force of the steel column 1 and the steel beam 2 based on the mechanism described above. It is also possible to eliminate the adverse effects of focusing on the above configuration.

また、図５に示すように大きな地震が発生して鉄骨梁２が上下に大きく屈曲する場合において、例えば移動拘束部材１５、１６の上面に補剛リブ２０を設けておくことにより、第１の接合プレート６（第２の接合プレート７）の端面６ａ（７ａ）が跳ね上がり、移動拘束部材１４（１５）を構成する鉄板プレートの端面から外れてしまうのを防止することができる。   Further, when a large earthquake occurs and the steel beam 2 is bent greatly up and down as shown in FIG. 5, for example, by providing the stiffening ribs 20 on the upper surfaces of the movement restraining members 15 and 16, the first It is possible to prevent the end face 6a (7a) of the joining plate 6 (second joining plate 7) from jumping up and coming off from the end face of the iron plate constituting the movement restraining member 14 (15).

なお、本発明は、例えば図６に示す実施例３として適用されるようにしてもよい。この実施例２では、第１の接合プレート６の端部６ａ及び／又は第２の接合プレート７の端部７ａに形成された切欠き２６に移動拘束部材１５を嵌め込んで当接させる。その結果、この切欠き２６により、移動拘束部材１５がブレース構面から逸脱するのを防ぐことが可能となる。なお、この実施例２においては、鉄骨柱２５をＨ形鋼で構成する場合につき示しているが、これに限定されるものではなく、鉄骨梁１に代替してもよいことは勿論である。   The present invention may be applied as, for example, the third embodiment shown in FIG. In the second embodiment, the movement restraining member 15 is fitted and brought into contact with the notch 26 formed in the end 6a of the first joining plate 6 and / or the end 7a of the second joining plate 7. As a result, the notch 26 can prevent the movement restraining member 15 from deviating from the brace surface. In addition, in this Example 2, although shown about the case where the steel column 25 is comprised with H-section steel, it is not limited to this, Of course, you may substitute to the steel beam 1. FIG.

本発明に係る実施例１を示す図である。It is a figure which shows Example 1 which concerns on this invention. (a)は、図１におけるＡ−Ａ断面図であり、(b)は、図１におけるＢ−Ｂ断面図である。(a) is AA sectional drawing in FIG. 1, (b) is BB sectional drawing in FIG. 本発明に係る実施例２を示す図である。It is a figure which shows Example 2 which concerns on this invention. (a)は、図３におけるＡ−Ａ断面図であり、(b)は、図１におけるＢ−Ｂ断面図である。(a) is AA sectional drawing in FIG. 3, (b) is BB sectional drawing in FIG. 本発明の作用効果につき説明するための図である。It is a figure for demonstrating about the effect of this invention. 本発明に係る実施例３につき説明するための図である。It is a figure for demonstrating about Example 3 which concerns on this invention. 従来例について説明するための図である。It is a figure for demonstrating a prior art example. 層間変形角につき説明するための図である。It is a figure for demonstrating per interlayer deformation angle.

符号の説明Explanation of symbols

１ 鉄骨柱
２ 鉄骨梁
４ 耐震用部材
５ 接合金具
６ 第１の接合プレート
７ 第２の接合プレート
８ ガセットプレート
１０ スプライスプレート
１１ 連結ボルト
１４、１５ 移動拘束部材
４１ 隅肉溶接 DESCRIPTION OF SYMBOLS 1 Steel column 2 Steel beam 4 Seismic member 5 Joint metal fitting 6 First joint plate 7 Second joint plate 8 Gusset plate 10 Splice plate 11 Connection bolts 14 and 15 Movement restraint member 41 Fillet welding

Claims (6)

略鉛直方向に延設された鉄骨柱と略水平方向に延設された鉄骨梁の交差部に、耐震用部材を接合するための接合金具における互いに直交する向きに取り付けられた第１の接合プレートと第２の接合プレートとが、当該鉄骨柱及び当該鉄骨梁に対しては非固定とした上で当接され、
この第１の接合プレート又は第２の接合プレートの端部に当接させて、当該接合金具に作用する力に抵抗する移動拘束部材を前記鉄骨柱並びに前記鉄骨梁にそれぞれ設けたことを特徴とする耐震用接合構造。 A first joining plate attached in a direction orthogonal to each other in a joint fitting for joining a seismic member to an intersection of a steel column extending in a substantially vertical direction and a steel beam extending in a substantially horizontal direction And the second joining plate are brought into contact with the steel column and the steel beam after being fixed,
The steel column and the steel beam are each provided with a movement restraining member that abuts against the end of the first joint plate or the second joint plate and resists the force acting on the joint metal fitting. Seismic joint structure. 前記耐震用部材が圧縮力を受けた場合は、前記接合金具に作用する力を鉄骨柱及び鉄骨梁に支圧力として伝達することを特徴とする請求項１記載の耐震用接合構造。   The seismic joint structure according to claim 1, wherein when the seismic member receives a compressive force, a force acting on the joint fitting is transmitted as a supporting pressure to the steel column and the steel beam. 前記耐震用部材が引張力を受けた場合に、接合金具の非固定部に作用する力を前記移動拘束部材を介して鉄骨柱及び鉄骨梁に伝達するように設けたことを特徴とする請求項１記載の耐震補強用接合構造。   When the seismic member receives a tensile force, the force acting on the non-fixed portion of the joint fitting is provided to transmit to the steel column and the steel beam via the movement restraining member. The joint structure for earthquake-proof reinforcement according to 1. 前記第１の接合プレートの端部及び／又は第２の接合プレートの端部に形成された切欠きに前記移動拘束部材を嵌め込んで当接させることを特徴とする請求項１〜３のうち何れか１項記載の耐震用接合構造。   The movement restraining member is fitted and brought into contact with a notch formed at an end portion of the first bonding plate and / or an end portion of the second bonding plate. The earthquake-resistant joint structure according to any one of the above items. 前記移動拘束部材は、前記鉄骨柱又は前記鉄骨梁に固定される移動拘束部材と、この移動拘束部材の上面で、かつ前記第１の接合プレート又は第２の接合プレートの端部に近接して設けられた補剛リブとを有することを特徴とする請求項１〜４のうち何れか１項記載の耐震用接合構造。   The movement restraining member includes a movement restraining member fixed to the steel column or the steel beam, an upper surface of the movement restraining member, and close to an end of the first joining plate or the second joining plate. It has the provided stiffening rib, The junction structure for earthquake resistance of any one of Claims 1-4 characterized by the above-mentioned. 略鉛直方向に延設された鉄骨柱と略水平方向に延設された鉄骨梁の交差部に、耐震用部材を接合するための接合金具における互いに直交する向きに取り付けられた第１の接合プレートと第２の接合プレートを、当該鉄骨柱及び当該鉄骨梁に対しては非固定とした上で当接させ、
この第１の接合プレート又は第２の接合プレートの端部に当接させて、当該接合金具に作用する力に抵抗する移動拘束部材を前記鉄骨柱並びに前記鉄骨梁にそれぞれ設けることを特徴とする耐震用接合構造の構築方法。 A first joining plate attached in a direction orthogonal to each other in a joint fitting for joining a seismic member to an intersection of a steel column extending in a substantially vertical direction and a steel beam extending in a substantially horizontal direction And the second joining plate are brought into contact with the steel column and the steel beam after being fixed,
The steel column and the steel beam are each provided with a movement restraining member that abuts against the end of the first joint plate or the second joint plate and resists the force acting on the joint fitting. Construction method of seismic joint structure.
JP2006106342A 2006-04-07 2006-04-07 Seismic joint structure and construction method thereof Expired - Fee Related JP4649360B2 (en)

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