JP6284722B2 - Buckling-restrained brace and manufacturing method thereof - Google Patents

Buckling-restrained brace and manufacturing method thereof Download PDF

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JP6284722B2
JP6284722B2 JP2013175425A JP2013175425A JP6284722B2 JP 6284722 B2 JP6284722 B2 JP 6284722B2 JP 2013175425 A JP2013175425 A JP 2013175425A JP 2013175425 A JP2013175425 A JP 2013175425A JP 6284722 B2 JP6284722 B2 JP 6284722B2
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slip
concrete
buckling
recess
protrusion
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JP2015045132A (en
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勇紀 岡本
勇紀 岡本
貴久 森
貴久 森
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Daiwa House Industry Co Ltd
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Description

この発明は、構造物の骨組みに組み込まれ、地震等の際に振動エネルギーを吸収して振動を減衰させる座屈拘束ブレース、およびその製造方法に関する。   The present invention relates to a buckling-restrained brace that is incorporated in a framework of a structure and absorbs vibration energy in an earthquake or the like to attenuate the vibration, and a manufacturing method thereof.

座屈拘束ブレースとしては、従来より、芯材の周囲を鋼板のみで補鋼したもの、ＲＣで補鋼したもの、鋼材とモルタルやコンクリートで被覆したもの等、様々な補鋼形式が提案され、実用化されている。例えばその一例として、溝形鋼材内にモルタルまたはコンクリートを充填してなる一対の拘束材で、芯材を挟み付けた構成のものが知られている。   As buckling-restrained braces, various types of steel supplements have been proposed, such as those in which the periphery of the core material is supplemented with only steel plates, those supplemented with RC, and those coated with steel and mortar or concrete. It has been put into practical use. For example, as an example, there is known a configuration in which a core material is sandwiched between a pair of constraining materials formed by filling mortar or concrete in a channel steel material.

特開２００３−２９３４６１号公報JP 2003-293461 A

本件出願人は、上記構成の座屈拘束ブレースにおいて、図６に示すように、芯材２２の長手方向の中間部に拘束材２３側へ突出する滑り止め突起３１を基端で溶接して設け、拘束材２３内のモルタル２５またはコンクリートに前記滑り止め突起３１が嵌まり込んで係合する筒状の突起受け金物３２を設けることで、芯材２２と拘束材２３がその接触面に沿う方向に相互に滑ることを防止する滑り止め機構を構成したものを案出した。   In the buckling restraint brace having the above-described configuration, the applicant of the present invention provides, as shown in FIG. 6, a non-slip protrusion 31 that protrudes toward the restraint material 23 at the intermediate portion in the longitudinal direction of the core member 22 by welding at the base end. A direction in which the core material 22 and the restraining material 23 follow the contact surface is provided by providing the cylindrical projection receiving metal 32 in which the anti-slip projection 31 is fitted and engaged with the mortar 25 or the concrete in the restraining material 23. We have devised an anti-slip mechanism that prevents sliding against each other.

この場合、滑りを効果的に抑止するために、図６のように突起受け金物３２の内径を滑り止め突起３１の外径にできるだけ近い値に設定すると、滑り止め突起３１の基端を芯材２２に溶接する溶接ビード３３の上に突起受け金物３２が載ってしまう。その結果、芯材２２と拘束材２３との間の隙間が大きくなり、これが座屈拘束ブレースの一時的な耐力低下の主因となる。   In this case, if the inner diameter of the protrusion receiving metal 32 is set as close as possible to the outer diameter of the anti-slip protrusion 31 as shown in FIG. The protrusion receiving metal 32 is placed on the weld bead 33 that is welded to 22. As a result, a gap between the core material 22 and the restraining material 23 becomes large, which becomes a main cause of a temporary decrease in yield strength of the buckling restraint brace.

そこで、上記課題を解決するために、図７のように、突起受け金物３２の内径を、前記溶接ビード３３の外周寸法より僅かに大きく設定することを試みた。この場合、一定の効果が確認されたものの、効果にバラツキが見られた。この効果のバラツキは、前記溶接ビード３３がきれいな形状に仕上がるかどうかが溶接工の技量に左右されることに起因すると考えられる。そこで、溶接工の技量に左右されることなく、芯材２２と拘束材２３との間の隙間が大きくならないように滑り止め機構を構成することが望まれる。   Therefore, in order to solve the above-described problem, an attempt was made to set the inner diameter of the protrusion receiving metal 32 slightly larger than the outer peripheral dimension of the weld bead 33 as shown in FIG. In this case, although a certain effect was confirmed, there was a variation in the effect. It is considered that the variation in this effect is caused by whether or not the weld bead 33 is finished in a clean shape depends on the skill of the welder. Therefore, it is desirable to configure the anti-slip mechanism so that the gap between the core material 22 and the restraint material 23 does not increase without being affected by the skill of the welder.

この発明の目的は、溶接工の技量に左右されることなく、芯材と拘束材との間の隙間が大きくならないように滑り止め機構を構成できる座屈拘束ブレース、およびその製造方法を提供することである。   An object of the present invention is to provide a buckling-restraining brace capable of configuring a non-slip mechanism so that a gap between a core material and a restraining material does not increase without depending on the skill of a welder, and a manufacturing method thereof. That is.

この発明の座屈拘束ブレースは、両端に建物の躯体と接合する接合部を有する板状の芯材と、この芯材の両面に沿って対向配置した一対の拘束材とを有し、これら一対の拘束材が、前記芯材との対向方向に開口した溝形鋼材と、この溝形鋼材内に充填されたコンクリート、モルタル、またはセメントミルクからなるコンクリート系材とでなる座屈拘束ブレースにおいて、前記芯材に前記拘束材側へ突出する滑り止め突起が基端で溶接して設けられ、前記コンクリート系材に前記滑り止め突起の基端の溶接ビードが入る逃がし凹部が設けられ、深さ方向に垂直な断面において前記逃がし凹部よりも断面の小さい第２の凹部が前記逃がし凹部の底面に続いて設けられ、前記拘束材の前記コンクリート系材に前記滑り止め突起が嵌まり込む突起受け金物が、少なくとも前記第２の凹部の内周において設けられ、前記突起受け金物は前記溶接ビードに当たらず前記滑り止め突起に当たることを特徴とする。 The buckling restraint brace of the present invention has a plate-like core member having a joint portion that joins a building frame at both ends, and a pair of restraint members arranged to face each other along both sides of the core member. In a buckling restrained brace made of a grooved steel material that is open in the direction facing the core material, and a concrete material made of concrete, mortar, or cement milk filled in the grooved steel material, the slip projections the protruding restraining member side on the core material is provided by welding at the proximal end, said slip weld bead enters escape recess of the base end of the projection is provided on the concrete member, the depth direction the relief small second recess of cross-section than recess is provided subsequent to the bottom surface of the escape recess, said slip projections writes fits projection received in said concrete-based material of the restraining member in a cross section perpendicular to Things, provided on the inner periphery of at least the second recess, the projection receiving hardware is characterized and Turkey per the slip preventing projections not hit in the weld bead.

この構成の座屈拘束ブレースでは、上記のように、前記コンクリート系材に滑り止め突起の基端の溶接ビードが入る逃がし凹部を設け、突起受け金物は溶接ビードに当たらず滑り止め突起に当たる範囲に設けている。前記逃がし凹部は拘束材の厚さ方向の一部だけに設けるため、その径を十分に大きく形成できる。その結果、滑り止め突起の基端の溶接ビードの外周への張出し寸法に多少のバラツキがあっても、突起受け金物の先端が滑り止め突起の基端の溶接ビードに乗ってしまうことがない。したがって、溶接工の技量に左右されることなく、芯材と拘束材との間の隙間が大きくならないように滑り止め機構を構成でき、前記隙間が大きい場合に座屈拘束ブレースに生じる一時的な耐力低下を確実に防止できる。   In the buckling-restrained brace with this configuration, as described above, a relief recess is provided in the concrete material to receive the weld bead at the base end of the anti-slip projection, and the projection receiving hardware does not hit the weld bead and does not hit the anti-slip projection. Provided. Since the relief recess is provided only in a part in the thickness direction of the restraining material, the diameter thereof can be formed sufficiently large. As a result, even if there is some variation in the projecting dimension of the base end of the anti-slip projection to the outer periphery of the weld bead, the tip of the projection receiving metal does not ride on the weld bead at the base end of the anti-slip projection. Therefore, the anti-slip mechanism can be configured so that the gap between the core material and the restraining material does not increase without being influenced by the skill of the welder, and a temporary occurrence that occurs in the buckling restraint brace when the gap is large. It is possible to reliably prevent a decrease in yield strength.

この発明の座屈拘束ブレースの製造方法は、前記発明の座屈拘束ブレースを製造する方法であって、前記拘束材に前記コンクリート系材を充填する前に、前記溝形鋼材内に前記突起受け金物を配置し、この突起受け金物上に、前記逃がし凹部を成形する成形型本体と、この成形型本体の片面から突出して前記突起受け金物に嵌まる金物嵌まり込み突部、および前記成形型本体の他の片面から突出するつまみ部を有する逃がし凹部成形型を配置し、前記コンクリート系材を充填するものである。
この構成によると、芯材と拘束材との間の隙間が大きくならない滑り止め機構を有する座屈拘束ブレースを容易に製造できる。 The method of manufacturing buckling restrained brace of this invention is a method for producing a buckling restrained brace of the invention, prior to filling the Concrete material to said restraining member, said protrusion before Kimizogata the steel receiving hardware and placed, in the projection receiving on hardware, the relief forming die body for forming the recess, full hardware fits inclusive projection fitted in hardware receiving said projection protruding from one side of the mold body, and the An escape recess mold having a knob projecting from the other surface of the mold body is disposed and filled with the concrete material.
According to this configuration, it is possible to easily manufacture a buckling restrained brace having a non-slip mechanism that does not increase the gap between the core member and the restraining member.

この発明の座屈拘束ブレースは、両端に建物の躯体と接合する接合部を有する板状の芯材と、この芯材の両面に沿って対向配置した一対の拘束材とを有し、これら一対の拘束材が、前記芯材との対向方向に開口した溝形鋼材と、この溝形鋼材内に充填されたコンクリート、モルタル、またはセメントミルクからなるコンクリート系材とでなる座屈拘束ブレースにおいて、前記芯材に前記拘束材側へ突出する滑り止め突起が基端で溶接して設けられ、前記コンクリート系材に前記滑り止め突起の基端の溶接ビードが入る逃がし凹部が設けられ、深さ方向に垂直な断面において前記逃がし凹部よりも断面の小さい第２の凹部が前記逃がし凹部の底面に続いて設けられ、前記拘束材の前記コンクリート系材に前記滑り止め突起が嵌まり込む突起受け金物が、少なくとも前記第２の凹部の内周において設けられ、前記突起受け金物は前記溶接ビードに当たらず前記滑り止め突起に当たるため、溶接工の技量に左右されることなく、芯材と拘束材との間の隙間が大きくならないように滑り止め機構を構成できる。 The buckling restraint brace of the present invention has a plate-like core member having a joint portion that joins a building frame at both ends, and a pair of restraint members arranged to face each other along both sides of the core member. In a buckling restrained brace made of a grooved steel material that is open in the direction facing the core material, and a concrete material made of concrete, mortar, or cement milk filled in the grooved steel material, the slip projections the protruding restraining member side on the core material is provided by welding at the proximal end, said slip weld bead enters escape recess of the base end of the projection is provided on the concrete member, the depth direction the relief small second recess of cross-section than recess is provided subsequent to the bottom surface of the escape recess, said slip projections writes fits projection received in said concrete-based material of the restraining member in a cross section perpendicular to Things, provided on the inner periphery of at least the second recess, the projection receiving hardware is order to that per the slip projections without striking the weld bead, without being influenced by the skill of the welder, the core The anti-slip mechanism can be configured so that the gap between the material and the restraining material does not increase.

この発明の座屈拘束ブレースの製造方法は、前記発明の座屈拘束ブレースを製造する方法であって、前記拘束材に前記コンクリート系材を充填する前に、前記溝形鋼材内に前記突起受け金物を配置し、この突起受け金物上に、前記逃がし凹部を成形する成形型本体と、この成形型本体の片面から突出して前記突起受け金物に嵌まる金物嵌まり込み突部、および前記成形型本体の他の片面から突出するつまみ部を有する逃がし凹部成形型を配置し、前記コンクリート系材を充填するため、芯材と拘束材との間の隙間が大きくならない滑り止め機構を有する座屈拘束ブレースを容易に製造できる。 The method of manufacturing buckling restrained brace of this invention is a method for producing a buckling restrained brace of the invention, prior to filling the Concrete material to said restraining member, said protrusion before Kimizogata the steel receiving hardware and placed, in the projection receiving on hardware, the relief forming die body for forming the recess, full hardware fits inclusive projection fitted in hardware receiving said projection protruding from one side of the mold body, and the A seat having an anti-slip mechanism that does not increase the gap between the core material and the constraining material in order to fill the concrete material with the relief concave mold having a knob portion protruding from the other side of the mold body. Bending restraint braces can be easily manufactured.

この発明の一実施形態にかかる座屈拘束ブレースの分解斜視図である。It is a disassembled perspective view of the buckling restraint brace concerning one Embodiment of this invention. 同座屈拘束ブレースの断面図である。It is sectional drawing of the same buckling restraint brace. 同座屈拘束ブレースの変形例を示す分解斜視図である。It is a disassembled perspective view which shows the modification of the buckling restraint brace. 同座屈拘束ブレースにおける滑り止め機構を示す部分拡大断面図である。It is a partial expanded sectional view which shows the slip prevention mechanism in the buckling restraint brace. 同座屈拘束ブレースにおける滑り止め機構の製作手順の説明図である。It is explanatory drawing of the manufacture procedure of the anti-slip | skid mechanism in the same buckling restraint brace. 座屈拘束ブレースにおける滑り止め機構の提案例を示す説明図である。It is explanatory drawing which shows the example of a proposal of the anti-slip | skid mechanism in a buckling restraint brace. 座屈拘束ブレースにおける滑り止め機構の他の提案例を示す説明図である。It is explanatory drawing which shows the other proposal example of the anti-slip | skid mechanism in a buckling restraint brace.

この発明の一実施形態を図１ないし図５と共に説明する。図１はこの実施形態の座屈拘束ブレースの分解斜視図を、図２はその断面図をそれぞれ示す。この座屈拘束ブレース１は、芯材２と、この芯材２の両面に沿って対向配置した一対の拘束材３とを有する。芯材２は、図１のように細長い板状の部材であって、ＳＮ材（建築構造用圧延鋼材）やＬＹ材（低降伏点鋼材）等の平鋼板からなる。芯材２の両端は、建物の躯体となる柱や梁等の鉄骨材と接合する接合部２Ａであり、その両面の幅方向中央位置からそれぞれ垂直に突出するリブ２ａを有する断面十字状とされている。芯材２の接合部２Ａには複数のボルト孔（図示せず）が穿設されている。拘束材３は、芯材２の接合部２Ａの先端側部分を除く芯材２の略全体を覆うように配置される。   An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of the buckling restrained brace of this embodiment, and FIG. 2 is a sectional view thereof. The buckling restraint brace 1 includes a core member 2 and a pair of restraint members 3 disposed to face each other along both surfaces of the core member 2. The core material 2 is an elongated plate-like member as shown in FIG. 1 and is made of a flat steel plate such as an SN material (rolled steel material for building structure) or an LY material (low yield point steel material). Both ends of the core material 2 are joint portions 2A that are joined to steel frames such as columns and beams that form the building frame, and are formed in a cross-shaped cross section having ribs 2a that project vertically from the center positions in the width direction on both sides. ing. A plurality of bolt holes (not shown) are formed in the joint portion 2 </ b> A of the core material 2. The restraining material 3 is arranged so as to cover substantially the entire core material 2 excluding the tip side portion of the joint portion 2A of the core material 2.

前記一対の拘束材３は、図２のように、それぞれ前記芯材２との対向方向に開口した溝形鋼材４と、この溝形鋼材４内に充填されたコンクリート、モルタル、またはセメントミルクからなるコンクリート系材５とでなる。溝形鋼材４は、ウエブ４ａの両端から垂直に立ち上がる両フランジ４ｂが不等辺となった溝形断面に鋼板を折り曲げた曲げ加工品である。拘束材３の芯材２と対向する表面には、アンボンド材９が貼り付けられる。アンボンド材９は、例えば板状ないしシート状のブチルゴム等からなる。また、溝形鋼材４における前記両フランジ４ｂのうち、幅寸法を長くした一方の内面における芯材２の配置される高さ相当位置には、溝形鋼材４の長さ方向に延びて芯材２を幅方向に位置規制する棒状のスペーサ６が溶接等により固定されている。上記幅寸法を長くしたフランジ４ｂは、他方の拘束材３の溝形鋼材４における幅寸法の短い方のフランジ４ｂの外面に被さり、その被さり部分が互いに溶接等で接合されている。溝形鋼材４の両端部には、それらの端部開口を閉塞する蓋片４ｃがそれぞれ設けられ、これら両蓋片４ｃと、前記ウエブ４ａおよび両フランジ４ｂにより、溝形鋼材４内が方形箱状に囲まれている。   As shown in FIG. 2, the pair of restraining members 3 are each composed of a grooved steel material 4 opened in a direction facing the core material 2, and concrete, mortar, or cement milk filled in the grooved steel material 4. It becomes with the concrete type material 5 which becomes. The grooved steel material 4 is a bent product obtained by bending a steel plate into a grooved cross section in which both flanges 4b rising vertically from both ends of the web 4a are unequal sides. An unbond material 9 is affixed to the surface of the restraint material 3 facing the core material 2. The unbond material 9 is made of, for example, plate-like or sheet-like butyl rubber. Further, among the flanges 4b of the channel steel material 4, the core material extends in the length direction of the channel steel material 4 at a position corresponding to the height at which the core material 2 is disposed on one inner surface of which the width dimension is increased. A bar-like spacer 6 that regulates the position of 2 in the width direction is fixed by welding or the like. The flange 4b having the longer width dimension is placed on the outer surface of the flange 4b having the shorter width dimension in the channel steel material 4 of the other restraining member 3, and the covered portions are joined to each other by welding or the like. Lid pieces 4c for closing the end openings are respectively provided at both ends of the grooved steel material 4, and the inside of the grooved steel material 4 is a rectangular box by the lid pieces 4c, the web 4a and both flanges 4b. It is surrounded by a shape.

前記一対の拘束材３と芯材２とは、芯材２側に設けられた滑り止め突起１１と各拘束材３側に設けられた突起受け金物１２とを有する滑り止め機構１０により、互いに接面方向へ滑る動きが規制されている。前記滑り止め突起１１は、芯材２の長手方向の中間部で、かつ幅方向の中間部に芯材２の両面から各拘束材３側へそれぞれ突出するように、それらの基端が溶接して芯材２に設けられる。前記突起受け金物１２は、前記滑り止め突起１１が嵌まり込んで係合する筒状の部材であって、各拘束材３のコンクリート系材５に埋め込んで配置される。   The pair of restraining materials 3 and the core material 2 are brought into contact with each other by an anti-slip mechanism 10 having an anti-slip projection 11 provided on the core material 2 side and a projection receiving metal 12 provided on each restraint material 3 side. Movement in the surface direction is restricted. The non-slip protrusions 11 are welded at their base ends so as to protrude from both surfaces of the core material 2 toward the respective restraining materials 3 at the intermediate portion in the longitudinal direction of the core material 2 and at the intermediate portion in the width direction. Provided on the core 2. The protrusion receiving metal 12 is a cylindrical member with which the anti-slip protrusion 11 is fitted and engaged, and is disposed so as to be embedded in the concrete material 5 of each restraining material 3.

図４は、前記滑り止め機構１０の具体例を拡大断面図で示す。滑り止め突起１１は角柱状鋼材からなり、その基端がすみ肉溶接の溶接ビード１３により芯材２の片面に固定されている。拘束材３における前記突起受け金物１２が埋め込まれるコンクリート系材５の芯材２と対向する表面側には、前記滑り止め突起１１の基端の溶接ビード１３が入る逃がし凹部１４が設けられる。コンクリート系材３に埋め込まれる突起受け金物１２は、芯材２側の滑り止め突起１１と同心となる位置で前記溶接ビード１３に当たらず滑り止め突起１１に当たる高さ範囲に配置される。ここでは、突起受け金物１２は、前記逃がし凹部１４の開口面から溝形鋼材４のウエブ４ａまでの高さ範囲にわたって埋め込まれる。前記突起受け金物１２が前記コンクリート系材５に嵌まっている空間が、請求項１で言う「第２の凹部」である。 FIG. 4 is an enlarged sectional view showing a specific example of the anti-slip mechanism 10. The non-slip protrusion 11 is made of a prismatic steel material, and its base end is fixed to one surface of the core material 2 by a fillet welded bead 13. A relief recess 14 into which the weld bead 13 at the base end of the anti-slip projection 11 is provided is provided on the surface side of the restraining material 3 facing the core material 2 of the concrete material 5 in which the projection receiving metal 12 is embedded. The protrusion receiving metal 12 embedded in the concrete material 3 is arranged in a height range where it does not hit the weld bead 13 but hits the anti-slip protrusion 11 at a position concentric with the anti-slip protrusion 11 on the core material 2 side. Here, the protrusion receiving metal 12 is embedded over a height range from the opening surface of the escape recess 14 to the web 4 a of the channel steel 4. A space in which the projection receiving metal 12 is fitted in the concrete material 5 is a “second recess ” in claim 1 .

上記鋼製の座屈拘束ブレース１によると、滑り止め機構１０として、芯材２の長手方向の中間部に拘束材３側へ突出する滑り止め突起１１を基端で溶接して設け、拘束材３のコンクリート系材５に前記滑り止め突起１１が嵌まり込んで係合する筒状の突起受け金物１２を埋め込んでいる。この構成において、前記コンクリート系材５に滑り止め突起１１の基端の溶接ビード１３が入る逃がし凹部１４を設け、前記突起受け金物１２は前記溶接ビード１３に当たらず滑り止め突起１１に当たる範囲に設けている。これにより、滑り止め突起１１の基端の溶接ビード１３の張出し寸法（のど厚）に多少のバラツキがあっても、突起受け金物１２の先端が滑り止め突起１１の基端の溶接ビード１３に乗ってしまうことがない。そのため、溶接工の技量に左右されることなく、芯材２と拘束材３との間の隙間が大きくならないように滑り止め機構１０を構成でき、前記隙間が大きい場合に座屈拘束ブレース１に生じる一時的な耐力低下を確実に防止できる。   According to the steel buckling-restraining brace 1, the anti-slip mechanism 10 is provided with a non-slip protrusion 11 that protrudes toward the restraining material 3 on the intermediate portion in the longitudinal direction of the core material 2, and is welded at the base end. 3 is embedded with a cylindrical projection receiving metal 12 in which the anti-slip projection 11 is fitted and engaged with the concrete material 5. In this configuration, the concrete material 5 is provided with a relief recess 14 into which the weld bead 13 at the base end of the anti-slip protrusion 11 enters, and the protrusion receiving metal 12 is provided in a range where it does not contact the weld bead 13 but hits the anti-slip protrusion 11. ing. Thereby, even if there is some variation in the overhang dimension (throat thickness) of the weld bead 13 at the base end of the anti-slip projection 11, the tip of the projection receiving metal 12 rides on the weld bead 13 at the base end of the anti-slip projection 11. There is no end. Therefore, the anti-slip mechanism 10 can be configured so that the gap between the core material 2 and the restraining material 3 does not become large without being influenced by the skill of the welder. It is possible to reliably prevent a temporary decrease in yield strength.

図５は、前記滑り止め機構１０におけるコンクリート系材５側の逃がし凹部１４の成形手順を示している。この成形手順では、拘束材３の溝形鋼材４内にコンクリート系材５を充填する前に、図５（Ａ）のように上向きに配置した溝形鋼材４内に突起受け金物１２を埋め込み完了時の位置および姿勢となるように配置する。突起受け金物１２は、点溶接、接着等の適宜の手法で溝形鋼材４に対して仮に固定しておく。この突起受け金物１２の上に凹部成形型１５を配置する。凹部成形型１５は、前記逃がし凹部１４を成形する成形型本体１５ａと、この成形型本体１５ａの片面から突出して突起受け金物１２に嵌まる金物嵌まり込み突部１５ｂと、成形型本体１５ａの他の片面から突出するつまみ部１５ｃとを有する。凹部成形型１５は、鋼材、樹脂材、木材等のいずれの材質であっても良い。凹部成形型１５の金物嵌まり込み突部１５ｂは、コンクリート系材５を充填する時に凹部成形型１５が移動するのを防止するのに有効である。このように、凹部成形型１５を配置した後に、溝形鋼材４内にコンクリート系材５を充填する。
コンクリート系材５が固化した後に、図５（Ｂ）のように凹部成形型１５を脱型することで、前記逃がし凹部１４を成形することができる。凹部成形型１５のつまみ部１５ｃは脱型操作に有効である。 FIG. 5 shows a forming procedure of the relief recess 14 on the concrete material 5 side in the anti-slip mechanism 10. In this molding procedure, before the concrete steel material 5 is filled in the groove steel material 4 of the restraint material 3, the protrusion receiving metal 12 is completely embedded in the groove steel material 4 arranged upward as shown in FIG. Arrange it so that it is in the position and posture of the hour. The protrusion receiving metal 12 is temporarily fixed to the channel steel 4 by an appropriate method such as spot welding or adhesion. A concave mold 15 is disposed on the projection receiving metal 12. The recess mold 15 includes a mold body 15a for molding the relief recess 14, a metal fitting protrusion 15b that protrudes from one surface of the mold body 15a and fits into the protrusion receiving metal 12, and a mold body 15a. And a knob 15c protruding from the other side. The concave mold 15 may be made of any material such as steel, resin, or wood. The metal fitting protrusion 15b of the concave mold 15 is effective in preventing the concave mold 15 from moving when the concrete material 5 is filled. In this way, after the concave mold 15 is arranged, the concrete steel material 5 is filled into the channel steel material 4.
After the concrete material 5 is solidified, the relief recess 14 can be formed by removing the recess forming die 15 as shown in FIG. The knob portion 15c of the concave mold 15 is effective for demolding operation.

このように、上記構成の凹部成形型１５を用いて拘束材３のコンクリート系材５に逃がし凹部１４を成形すると、その成形を精度良く容易に行うことができ、座屈拘束ブレース１全体の製作が容易になる。   As described above, when the recess 14 is formed in the concrete material 5 of the constraining material 3 using the concavity forming die 15 having the above-described configuration, the forming of the concavity 14 can be performed easily with high accuracy, and the entire buckling constraining brace 1 is manufactured. Becomes easier.

図３には、この座屈拘束ブレース１の変形例の分解斜視図を示す。この例では、芯材２は、長手方向の中央部に他よりも幅の狭い絞り部７を有する。絞り部７は、他よりも断面二次モーメントが小さいエネルギー吸収部とされる。絞り部７の両側には、スペーサ８が配置される。その他の構成および作用効果は、先の構成例の場合と略同様である。   In FIG. 3, the disassembled perspective view of the modification of this buckling restraint brace 1 is shown. In this example, the core material 2 has a narrowed portion 7 that is narrower than the others at the center in the longitudinal direction. The restricting portion 7 is an energy absorbing portion having a second moment of section smaller than others. Spacers 8 are disposed on both sides of the throttle unit 7. Other configurations and operational effects are substantially the same as in the previous configuration example.

１…座屈拘束ブレース
２…芯材
２Ａ…接合部
３…拘束材
４…溝型鋼材
５…コンクリート系材
１０…滑り止め機構
１１…滑り止め突起
１２…突起受け金物
１３…溶接ビード
１４…逃がし凹部
１５…凹部成形型
１５ａ…成形型本体
１５ｂ…金物嵌まり込み突部
１５ｃ…つまみ部 DESCRIPTION OF SYMBOLS 1 ... Buckling restraint brace 2 ... Core material 2A ... Joint part 3 ... Restraint material 4 ... Groove type steel material 5 ... Concrete material 10 ... Anti-slip mechanism 11 ... Anti-slip protrusion 12 ... Protrusion receiving metal 13 ... Weld bead 14 ... Relief Concave portion 15 ... Concavity mold 15a ... Mold body 15b ... Metal fitting projection 15c ... Knob portion

Claims (2)

両端に建物の躯体と接合する接合部を有する板状の芯材と、この芯材の両面に沿って対向配置した一対の拘束材とを有し、これら一対の拘束材が、前記芯材との対向方向に開口した溝形鋼材と、この溝形鋼材内に充填されたコンクリート、モルタル、またはセメントミルクからなるコンクリート系材とでなる座屈拘束ブレースにおいて、
前記芯材に前記拘束材側へ突出する滑り止め突起が基端で溶接して設けられ、前記コンクリート系材に前記滑り止め突起の基端の溶接ビードが入る逃がし凹部が設けられ、深さ方向に垂直な断面において前記逃がし凹部よりも断面の小さい第２の凹部が前記逃がし凹部の底面に続いて設けられ、前記拘束材の前記コンクリート系材に前記滑り止め突起が嵌まり込む突起受け金物が、少なくとも前記第２の凹部の内周において設けられ、前記突起受け金物は前記溶接ビードに当たらず前記滑り止め突起に当たることを特徴とする座屈拘束ブレース。 It has a plate-like core material having a joint part that joins the building frame at both ends, and a pair of restraining materials arranged opposite to each other along both sides of the core material. In a buckling-restrained brace made of a grooved steel material opened in the opposite direction of and a concrete material made of concrete, mortar, or cement milk filled in the grooved steel material,
The slip projections the protruding restraining member side on the core material is provided by welding at the proximal end, said slip weld bead enters escape recess of the base end of the projection is provided on the Concrete member, the depth direction A protrusion receiving metal fitting in which a second recess having a smaller cross section than the escape recess is provided on a bottom surface of the escape recess in a cross section perpendicular to the escape recess, and the anti-slip protrusion fits into the concrete material of the restraint material. , at least the provided in the inner circumference of the second recess, the buckling-restrained brace projection receiving hardware is characterized by a Turkey per the slip preventing projections not hit in the weld bead. 請求項１に記載の座屈拘束ブレースを製造する方法であって、前記拘束材に前記コンクリート系材を充填する前に、前記溝形鋼材内に前記突起受け金物を配置し、この突起受け金物上に、前記逃がし凹部を成形する成形型本体と、この成形型本体の片面から突出して前記突起受け金物に嵌まる金物嵌まり込み突部、および前記成形型本体の他の片面から突出するつまみ部を有する逃がし凹部成形型を配置し、前記コンクリート系材を充填する座屈拘束ブレースの製造方法。 A method of manufacturing a buckling restrained brace of claim 1, prior to filling the Concrete material to said restraining member, and placed the protrusion receiving hardware before Kimizogata the steel, the projections A mold body that molds the relief recess on the metal receiving piece, a metal fitting protrusion that protrudes from one side of the mold body and fits into the protrusion receiving metal, and projects from the other surface of the mold body A method of manufacturing a buckling-restrained brace, in which a relief concave mold having a knob portion to be placed is arranged and filled with the concrete material.
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