JP2010018985A

JP2010018985A - Portal frame with damper of brace structure

Info

Publication number: JP2010018985A
Application number: JP2008179603A
Authority: JP
Inventors: Toshio Kitamura; 俊夫北村; Hiroshi Isoda; 博五十田
Original assignee: SAITO MOKUZAI KOGYO KK; Shinshu University NUC
Current assignee: SAITO MOKUZAI KOGYO KK; Shinshu University NUC
Priority date: 2008-07-09
Filing date: 2008-07-09
Publication date: 2010-01-28
Anticipated expiration: 2028-07-09
Also published as: JP5116587B2

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of conventional steel frames or wooden frames of rigid structure wherein since the cross sections of a column and a beam must be increased in order to hold bending resistance and energy cannot be absorbed against the bending resistance, the deformations thereof are increased against both vertical vibration and earthquake movement. <P>SOLUTION: In this portal frame with a damper of a brace structure comprising the column 1 and the beam 2 serving as upper chord members, a first lower chord member 4 installed diagonally from the lower section 3 of the column 1 toward the beam 2, a second lower chord member 6 installed diagonally from the beam center section 5 toward the column 1, and a short first diagonal member 8 joined to the intersection 7 between the first lower chord member 4 and the second lower chord member 6 extend from a corner 9 which is the intersection 7 between the column 1 and the beam 2. A second diagonal member 10 is installed at the appropriate portion of the beam 2 apart from the center toward the column 1 side so as to extend toward the intersection 7 of the first lower chord member 4, the second lower chord member 6, and the first diagonal member 8. These members are joined and fixed with fixing devices such as bolts. A damper 11 is attached to the first diagonal member 8 and/or the second diagonal member 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ブレース構造のラーメン構法による門型フレームに制振装置を設けた構造に係り、特に都会における住宅は敷地が狭く、駐車場を確保するために１階にガレージを設ける等、１階に間口を広く取れるラーメン構造が望まれている。この要望に答えるために発明された狭小地における木造住宅向けに短材で構成できる門型フレームで、さらに木造住宅で開口部の部分に組み込まれた建物の振動を制振するように構成した制振装置付門型フレームに関するもので、安価で、簡単かつ短時間で構築できるものである。 The present invention relates to a structure in which a vibration control device is provided on a gate-type frame using a brace ramen construction method, and in particular, a residential area in an urban area has a narrow site, and a garage is provided on the first floor to secure a parking lot. Therefore, a ramen structure with a wide frontage is desired. In response to this demand, a gate-type frame that can be constructed of short materials for wooden houses in narrow spaces, which was invented in order to respond to this demand, and that was constructed to suppress vibrations of buildings built into the openings of wooden houses. It relates to a gate-type frame with a vibration device, and is inexpensive and can be constructed easily and in a short time.

例えば、開口部を確保するための門型フレームとしては、図８のようなラーメン構造が一般的であり、それは密実な断面によって曲げ抵抗する構造である。このラーメン構造は、密実な柱１、梁２とそれをつなぐ剛に近い接合部から構成される。そして、地震による震動が建物に伝播されると、柱１と梁２、そして接合部は曲げ抵抗をして地震動に抵抗する。
しかし、さらに建物の震動に対して高い制振性能を持たせるためには、制振装置が必要になる。この制振装置としては、高減衰ゴムの減衰力により建物の水平方向の振動を制振する装置が求められている。この制振装置は一般的には図９のように、建物を構成する耐力壁の中に制振壁を組み込むことにより制振性能を発揮するものが考えられている。
一方、ブレース構造において、図１０のような架構形式がある。この架構はトラスであるため、接点はピン接合で、地震動による水平力に対し軸力で抵抗する。よって、基本的にトラス部材には軸力のみが生じ、曲げが生じない。ただし、中・長期的な鉛直荷重に対しては上弦材（梁）２に曲げが生じる。また、ラーメン構造の鉄骨柱、鉄骨梁を骨組みとした鉄骨架構内に、一般の建築用鋼材からなるブレース材を連結した構造のものもある。ブレース材の上端は上部の鉄骨梁に連結している。また、ブレース材の下端は、連結部材、制振部材を介して鉄骨柱及び下部の鉄骨梁に連結している。ここで、制振部材は、ブレース材の座屈耐力以下でせん断、又は曲げにより塑性変形する極軟鋼を材料とし、長尺なパネル体に形成している。そして、この制振部材は、ブレース材の他端に連結部材を介して直交して連結している鉄骨架構の制振ブレース構造（例えば、特許文献１を参照）が存在している。
特開平１０−３１７７１１号公報（特許請求の範囲の欄、発明の詳細な説明の欄の｛発明を実施の形態｝の欄の段落｛０００９｝〜｛００１９｝、及び図１、図２を参照） For example, as a portal frame for securing an opening, a ramen structure as shown in FIG. 8 is generally used, which is a structure that resists bending with a dense cross section. This ramen structure is composed of a solid column 1, a beam 2, and a rigid joint connecting them. And if the vibration caused by the earthquake is propagated to the building, the column 1 and the beam 2 and the joint portion resist bending resistance by bending resistance.
However, a vibration damping device is required to provide a high vibration damping performance against building vibration. As this vibration damping device, a device for damping the vibration in the horizontal direction of the building by the damping force of the high damping rubber is required. In general, as shown in FIG. 9, it is considered that this damping device exhibits damping performance by incorporating a damping wall into a load-bearing wall constituting a building.
On the other hand, in the brace structure, there is a frame form as shown in FIG. Since this frame is a truss, the contact is pin-joined and resists horizontal force due to earthquake motion with axial force. Therefore, basically only the axial force is generated in the truss member, and no bending occurs. However, bending occurs in the upper chord material (beam) 2 for medium and long-term vertical loads. In addition, there is a structure in which a brace material made of a general steel for construction is connected to a steel frame having a frame structure of a ramen structure and a steel beam. The upper end of the brace material is connected to the upper steel beam. Moreover, the lower end of the brace material is connected to the steel column and the lower steel beam via a connecting member and a damping member. Here, the damping member is made of a very mild steel that is plastically deformed by shearing or bending below the buckling strength of the brace material, and is formed in a long panel body. And this damping member has the damping brace structure (for example, refer patent document 1) of the steel frame currently connected with the other end of the brace material orthogonally via the connecting member.
Japanese Patent Laid-Open No. 10-317711 (refer to the paragraphs {0009} to {0019} in the column of “Description of Embodiments” in the section “Claims” and “Detailed Description of the Invention”, and FIGS. 1 and 2) )

しかしながら、上記従来技術において、前者の図８に示すように構成されたラーメン構造においては、曲げ抵抗するため柱１、梁２の断面が大きくなり、さらに接合部でも曲げモーメントを伝達するために接合部が大きくなってしまった。また、木材は曲げ抵抗に対してエネルギーを吸収できないため、鉛直振動に対しても地震動に対しても変形が大きくなってしまっていた。このラーメン構造のモデルケースとして２階建て住宅を想定した架構を図６に示す。この図によるラーメン構造の架構は、当然ではあるが構成部材の断面が大きくなり、かつ柱１に関しては通し柱にするため部材が長くなる。特に、都会の狭小地では架構の組み立てにおいて、部材を置く場所の確保、組み立てるための揚重機の配置に苦慮していた。
一方、図１０の架構形式は一般的に開口部を確保する目的では用いないが、本発明ではこの架構形式を採用して主に開口部を確保し、斜材部材に制振装置を組み込むために応用する。前述の通り、この架構はトラスであるため、水平力に対しトラス部材には軸力のみが生じ、曲げは生じないが、中・長期的な鉛直荷重に対しては上弦材である梁２に曲げが生じる。ゆえに、たわみ振動の問題から梁２は大きくなりがちで、この梁２に関し、モデルケースの２階建て住宅においては、図７に示す通り、梁の断面が１２０ｍｍ×３６０ｍｍとなった。この梁２を小さくすることが組み立ての効率化、コストダウンにおいて重要であった。また、架構の特性上、トラス部材に生じる軸力は大きく、軸力に対して一般的な接合部｛鋼板挿入型二面せん断接合（例えば、図５の（ｃ）に示す通り、木材に切開をし、切開に鋼板１５を挿入し、ボルトやドリフトピンで木材と鋼板を接合するものである。）｝を設計すると、図１１、図１２に示す通り、特に長さの短い斜材８の接合部に接合具１４（ドリフトピン）を多数本配置しなければならず、短い部分に密に接合具１４を配置することによる斜材の強度の低下や応力の伝達の確実性に心配があった。
また、前述の通り一般的に制振装置は図９のように建物を構成する耐力壁の中に制振壁を組み込むことにより制振性能を発揮するものである。しかしながら、木造の制振装置の分野では、耐力壁を持たずに開口部を確保する目的で用いる門型フレームにおいて、制振性能を持つ構法は皆無である。
また、特許文献１に示されたラーメン構造の鉄骨柱、鉄骨梁を骨組みとした鉄骨架構内に、一般の建築用鋼材からなるブレース材を連結した構造において、前記ブレース材の一端を前記鉄骨架構内の一部に連結するとともに、前記ブレース材の他端を、当該ブレース材の座屈耐力以下で塑性変形する制振部材を介して前記鉄骨架構内の他の部位に連結した鉄骨架構の制振ブレース構造という構造のため、同様に木材で架構を形成するには、曲げ抵抗を保持するため柱、梁断面を大きくしなければならず、しかも曲げ抵抗に対してエネルギーを吸収できないため、鉛直振動に対しても地震動に対しても変形が大きくなってしまうという問題がある。
本発明はこれらの問題を解決したブレース構造による制振装置付門型フレームである。 However, in the above-described prior art, in the case of the ramen structure configured as shown in FIG. 8, the cross section of the column 1 and the beam 2 is increased in order to resist bending, and further, the joint is joined to transmit the bending moment at the joint. The department has grown. In addition, because wood cannot absorb energy against bending resistance, the deformation has become large with respect to vertical vibration and earthquake motion. FIG. 6 shows a frame assuming a two-story house as a model case of this ramen structure. In the frame structure of the ramen structure shown in this figure, as a matter of course, the cross-section of the constituent members becomes large, and the column 1 has a long member because it is a through column. In particular, in narrow urban areas, when assembling the frame, it was difficult to secure a place to place the members and to place a lifting machine for assembly.
On the other hand, the frame type shown in FIG. 10 is not generally used for the purpose of securing the opening, but in the present invention, this frame type is mainly used to secure the opening and to incorporate the damping device into the diagonal member. Apply to. As described above, since this frame is a truss, only the axial force is generated in the truss member with respect to the horizontal force and bending does not occur. However, the beam 2 is the upper chord material for medium and long-term vertical loads. Bending occurs. Therefore, the beam 2 tends to be large due to the problem of flexural vibration, and the cross section of the beam 2 is 120 mm × 360 mm as shown in FIG. It was important to make the beam 2 smaller in terms of assembly efficiency and cost reduction. Further, due to the characteristics of the frame, the axial force generated in the truss member is large, and a general joint with respect to the axial force {steel plate insertion type two-sided shear joint (for example, incision in wood as shown in FIG. 5 (c)) The steel plate 15 is inserted into the incision, and the wood and the steel plate are joined with bolts and drift pins.)} Is designed, as shown in FIGS. Many joints 14 (drift pins) must be arranged at the joint, and there is a concern about the decrease in strength of the diagonal member and the certainty of stress transmission due to the dense placement of the joints 14 in the short part. It was.
In addition, as described above, the vibration damping device generally exhibits vibration damping performance by incorporating a vibration damping wall into a load bearing wall that constitutes a building as shown in FIG. However, in the field of wooden damping devices, there is no construction method having damping performance in a portal frame used for the purpose of securing an opening without having a bearing wall.
Further, in a structure in which a brace member made of a general steel for construction is connected to a steel frame having a steel frame column and a steel beam having a rigid frame structure disclosed in Patent Document 1, one end of the brace member is connected to the steel frame. The other end of the brace member is connected to another part in the steel frame via a vibration damping member that is plastically deformed below the buckling strength of the brace member. Because of the structure of the vibration brace structure, in order to form a frame with wood as well, the columns and beam sections must be enlarged to maintain bending resistance, and energy cannot be absorbed against bending resistance. There is a problem that deformation becomes large with respect to vibration and earthquake motion.
The present invention is a portal frame with a vibration damping device having a brace structure that solves these problems.

上記課題を解決するための本発明の第１発明は、請求項１に記載された通りのブレース構造による制振装置付門型フレームであり、次のようなものである。
上弦材である柱と梁からなる架構形式の門型フレームにおいて、柱の下部から梁に向って斜めに設けた第一下弦材と、梁中央部から柱に向って斜めに設けた第二下弦材と、この第一下弦材と第二下弦材の交点と接合する長さの短い第一斜材を、前記柱と梁の交点である角部から設け、さらに梁の中央部より柱側に寄った適宜部位に第二斜材を、前記第一下弦材、第二下弦材、第一斜材の交点に向って設け、これらをボルト等の固定具で接合固定し、加えて前記第一斜材及び、または第二斜材に制振装置を設ける構成である。 A first invention of the present invention for solving the above-described problems is a gate-type frame with a vibration damping device having a brace structure as described in claim 1, and is as follows.
In a frame-type portal frame consisting of columns and beams that are upper chord materials, the first lower chord material provided diagonally from the bottom of the column toward the beam and the second provided diagonally from the center of the beam toward the column The lower chord material and the first diagonal material having a short length to be joined to the intersection of the first lower chord material and the second lower chord material are provided from the corner portion which is the intersection of the column and the beam. A second diagonal material is provided at an appropriate part near the side, facing the intersection of the first lower chord material, the second lower chord material, and the first diagonal material, and these are joined and fixed with a fixture such as a bolt, The first diagonal member or the second diagonal member is provided with a vibration damping device.

上記課題を解決するための本発明の第２発明は、請求項２に記載された通りのブレース構造による制振装置付門型フレームであり、次のようなものである。
請求項１記載の発明における、長さの短い第一斜材を二材に分け、その二材により第一下弦材、第二下弦材を挟み込み、ボルト等の固定具で接合する構成である。 A second invention of the present invention for solving the above-mentioned problems is a gate-type frame with a vibration damping device having a brace structure as described in claim 2, and is as follows.
In the invention according to claim 1, the first diagonal member having a short length is divided into two parts, the first lower chord member and the second lower chord member are sandwiched by the two members, and are joined by a fixture such as a bolt. .

本発明に係るブレース構造による制振装置付門型フレームは、上記説明のような構成を有するので、以下に記載する効果を奏する。
（１）第二斜材を加えることにより、上弦材である梁をスパン中央で二分割でき、梁が短くなり、かつ断面が小さくなる（モデルケースでは１２０ｍｍ×３６０ｍｍ；長さ６ｍ×１本→１２０ｍｍ×１８０ｍｍ；長さ３ｍ×２本になり、全てのトラス部材の長さが３ｍ以下となる。）このことにより、木造住宅レベルの架構の組み立てであれば、揚重機が要らず人力で組み立てが可能である。
（２）第一斜材を二材に分け、その二材により第一下弦材、第二下弦材を挟み込むことにより、木材のめり込みを利用した接合部が可能になり、多数本の接合具を配置する必要がなくなり、接合部に無理がなくなる。
（３）架構の特性を利用し、軸力の大きくなる第一斜材と第二斜材の部分に制振装置を配置することにより、水平荷重と鉛直荷重に対し、第一下弦材、又は第二下弦材の部分に制振装置を配置することと同等の、非常に有効な制振効果を得ることができる。そして、第一、第二斜材内部に減衰性を有する部材が挿入されるため、上弦材である柱、梁と第一、第二下弦材の間に変形が生じた際にエネルギーを吸収することが可能である。
（４）鉛直荷重を支える部分と水平荷重に抵抗する部分とに分けて制振装置を配置するため、制振効果が効率良く得られる。 The gate-type frame with a vibration damping device having the brace structure according to the present invention has the configuration as described above, and therefore has the following effects.
(1) By adding the second diagonal material, the upper chord beam can be divided into two at the center of the span, the beam becomes shorter and the cross section becomes smaller (120 mm x 360 mm in the model case; length 6 m x 1 → 120mm x 180mm; length 3m x 2 and length of all truss members will be 3m or less.) As a result, if a wooden house level frame is assembled, a lifting machine is not required and it is assembled manually. Is possible.
(2) By dividing the first diagonal material into two materials and sandwiching the first lower chord material and the second lower chord material between the two materials, it becomes possible to make joints using the indentation of wood, and a large number of joint tools There is no need to arrange it, and there is no difficulty in the joint.
(3) By using the characteristics of the frame and arranging the damping device on the first and second diagonal members where the axial force increases, the first lower chord material against horizontal and vertical loads, Alternatively, it is possible to obtain a very effective vibration damping effect equivalent to the arrangement of the vibration damping device in the second lower chord member. Since a member having a damping property is inserted into the first and second diagonal members, energy is absorbed when deformation occurs between the columns and beams as the upper chord members and the first and second lower chord members. It is possible.
(4) Since the vibration damping device is arranged separately for the portion supporting the vertical load and the portion resisting the horizontal load, the vibration damping effect can be obtained efficiently.

上弦材である柱と梁からなる架構形式の門型フレームにおいて、柱の下部から梁に向って斜めに設けた第一下弦材と、梁中央部から柱に向って斜めに設けた第二下弦材と、この第一下弦材と第二下弦材の交点と接合する長さの短い第一斜材を、前記柱と梁の交点である角部から設け、さらに梁の中央部より柱側に寄った適宜部位に第二斜材を、前記第一下弦材、第二下弦材、第一斜材の交点に向って設け、これらをボルト等の固定具で接合固定し、加えて前記第一斜材及び、または第二斜材に制振装置を設けたブレース構造による制振装置付門型フレームである。 In a frame-type portal frame consisting of columns and beams that are upper chord materials, the first lower chord material provided diagonally from the bottom of the column toward the beam and the second provided diagonally from the center of the beam toward the column The lower chord material and the first diagonal material having a short length to be joined to the intersection of the first lower chord material and the second lower chord material are provided from the corner portion which is the intersection of the column and the beam. A second diagonal material is provided at an appropriate part near the side, facing the intersection of the first lower chord material, the second lower chord material, and the first diagonal material, and these are joined and fixed with a fixture such as a bolt, A gate-type frame with a damping device having a brace structure in which a damping device is provided on the first and / or second diagonal material.

以下、図面を用いて本発明の一実施例に関して説明する。
図１の（ａ）は、制振装置を第二斜材に設けたブレース構造による制振装置付門型フレームを示す概略説明図、（ｂ）は制振装置を第一斜材に設けたブレース構造による制振装置付門型フレームを示す概略説明図、図２は、制振装置を取り付ける前の本願発明の第一実施例であるブレース構造による制振装置付門型フレームを示す全体概略正面斜視図、図３は、図２と同様に、制振装置を取り付ける前の本願発明の第二実施例である第一斜材を二材に分割して第一下弦材、第二下弦材を挟み込むようにして固定接合したブレース構造による制振装置付門型フレームを示す全体概略正面図、図４は、図３で示した第二実施例の要部を示す正面斜視図、図５は、曲げ降伏型接合部の接合形式を示すもので、（ａ）は二面せん断に木材側材を用いたもの、（ｂ）は二面せん断に鋼板側材を用いたもの、（ｃ）は二面せん断に鋼板を挿入したものを各々示す概略正面図、図６は、ラーメン構造のモデルケースとして２階建て住宅を想定した架構を示す概略正面図、図７は、ブレース構造の門型フレームを示す概略正面図、図８は、従来のラーメン構造の門型フレームを示す概略正面図、図９は、門型フレームに制振装置を組み込んだ従来技術で、例えば（ａ）のような高減衰ゴムによる一実施例、（ｂ）はオイルダンパー、高減衰ゴムによる一実施例、（ｃ）は建物を構成する耐力壁の中に制振壁を組み込んだ一実施例を示す概略正面図、図１０は、ブレース構造における架構形式を示す概略説明図、図１１は、図３における第二実施例の一要部である接合部を拡大して示す正面図、図１２は、図３における第二実施例の接合部を示す正面図である。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1A is a schematic explanatory view showing a gate-type frame with a damping device having a brace structure in which the damping device is provided on the second diagonal member, and FIG. 1B is a diagram showing the damping device provided on the first diagonal member. FIG. 2 is a schematic diagram showing a gate-type frame with a vibration control device having a brace structure, and FIG. 2 is an overall schematic view showing the gate-type frame with the vibration control device having a brace structure according to the first embodiment of the present invention before the vibration control device is attached. As in FIG. 2, the front perspective view and FIG. 3 show that the first diagonal material, which is the second embodiment of the present invention before attaching the vibration damping device, is divided into two parts, and the first lower chord material and the second lower chord. FIG. 4 is an overall schematic front view showing a gate-type frame with a vibration control device having a brace structure fixedly joined so as to sandwich the material. FIG. 4 is a front perspective view showing the main part of the second embodiment shown in FIG. Indicates the joining type of the bending yield type joint, and (a) uses a wood side material for two-sided shearing. (B) is a schematic front view showing a steel plate side material used for two-sided shear, (c) is a schematic front view showing a steel plate inserted for two-sided shearing, and FIG. 6 is the second floor as a model case of a ramen structure. FIG. 7 is a schematic front view showing a frame structure assuming a built house, FIG. 7 is a schematic front view showing a gate-type frame with a brace structure, FIG. 8 is a schematic front view showing a gate-type frame with a conventional ramen structure, and FIG. In the prior art in which a damping device is incorporated in a gate-type frame, for example, (a) one embodiment using a high damping rubber, (b) an oil damper, one embodiment using a high damping rubber, and (c) a building. FIG. 10 is a schematic explanatory view showing a frame form in a brace structure, and FIG. 11 is one of the second embodiment in FIG. FIG. 12 is an enlarged front view showing the main part of the joint. Is a front view showing a joint portion of a second embodiment in FIG.

ここで、第一実施例について図１、図２に基づいて説明する。
上弦材である柱１と梁２からなる架構形式の門型フレームにおいて、柱１の下部３から梁２に向って斜めに設けた第一下弦材４と、梁中央部５から柱１に向って斜めに設けた第二下弦材６と、この第一下弦材４と第二下弦材６の交点７と接合する長さの短い第一斜材８を、前記柱１と梁２の組み合せ部である角部９から設け、さらに梁２の中央部５より柱側に寄った適宜部位に第二斜材１０を、前記第一下弦材４、第二下弦材６、第一斜材８の交点に向って設け、これらをボルト等の固定具で接合固定し、加えて前記第一斜材８及び、または第二斜材１０に制振装置を設けたことを特徴とするブレース構造による制振装置付門型フレームである。
尚、柱１、梁２、第一下弦材４、第二下弦材６、第一斜材８、第二斜材１０は全て木材で形成されている。 Here, the first embodiment will be described with reference to FIGS.
In a frame-type portal frame composed of columns 1 and beams 2 which are upper chord materials, a first lower chord material 4 provided obliquely from the lower part 3 of the columns 1 toward the beams 2, and from the beam central portion 5 to the columns 1 The first lower chord member 6 provided obliquely to the first lower chord member 8 and the first diagonal member 8 having a short length joined to the intersection 7 of the first lower chord member 4 and the second lower chord member 6 are connected to the pillar 1 and the beam 2. Provided from the corner portion 9 which is a combination portion, and further, the second diagonal member 10 is disposed at an appropriate portion closer to the column side than the central portion 5 of the beam 2, the first lower chord member 4, the second lower chord member 6, the first oblique member. Braces characterized in that they are provided toward the intersections of the members 8, these are joined and fixed with fasteners such as bolts, and in addition, a vibration damping device is provided in the first diagonal member 8 or the second diagonal member 10. It is a gate-type frame with a vibration control device.
The column 1, the beam 2, the first lower chord member 4, the second lower chord member 6, the first diagonal member 8, and the second diagonal member 10 are all made of wood.

次に、図１、図３、図４に基づいて、第二実施例を説明する。
前記図２に基づいて説明した第一実施例との違いは、長さの短い第一斜材８が二材に分けられ、その二材により第一下弦材４、第二下弦材６を挟み込み、ボルト等の固定具で接合したブレース構造による制振装置付門型フレームであり、この二材に分けて接合する手段としては、図５（ａ）に示すように主材１２を挟むように側材１３を設けて、ボルトやドリフトピン等の接合具１４で接合固定するもの、図５（ｂ）に示すように主材１２を挟むように鋼板１５を設けて、ボルトやドリフトピン等の接合具１４で接合固定するもの、図５（ｃ）に示すように、主材１２に切り目１６を形成し、その切り目１６に挿入するように鋼板１５を設けて接合具１４で接合固定する接合形式が考えられる。 Next, a second embodiment will be described based on FIG. 1, FIG. 3, and FIG.
The difference from the first embodiment described with reference to FIG. 2 is that the first diagonal material 8 having a short length is divided into two materials, and the first lower chord material 4 and the second lower chord material 6 are divided by the two materials. It is a gate-type frame with a vibration control device having a brace structure that is sandwiched and joined by a fixing tool such as a bolt. As a means for joining the two members separately, the main material 12 is sandwiched as shown in FIG. A side member 13 is provided on the side plate and joined and fixed with a connector 14 such as a bolt or a drift pin. A steel plate 15 is provided so as to sandwich the main material 12 as shown in FIG. As shown in FIG. 5C, a cut 16 is formed in the main material 12, and a steel plate 15 is provided so as to be inserted into the cut 16. A joint type is conceivable.

以上、説明したように、図２に示すように図１０の架構形式に第二斜材１０を加え、上弦材である梁２をスパン中央で二分割できるようにしたものである。図１１、図１２に示すように、第一斜材８の接合部が、長さの短い第一斜材８の接合部に接合具１４を多数本配置しなければならず、短い部分に密に接合具１４を配置することによる第一斜材８の強度の低下や応力の伝達の確実性に心配があったため、図３、図４に示すように第一斜材８を二材に分け、その二材により第一下弦材４、第二下弦材６を挟み込み、ボルトで接合するようにしたものである。図４の第一接合部１７は圧縮力と引張力を部材のめり込みにより、その他の接合部、例えば第二接合部１８に関しては、圧縮力は部材のめり込みにより、引張力は接合具１４（ボルト又はドリフトピン）で抵抗する。
架構の形状上、図２の第一斜材８に関しては、水平荷重に対し、最も軸力の大きくなる部材である第一下弦材４と同等の大きな軸力が生じる特性がある。また、同図の第二斜材１０に関しては、鉛直荷重に対し大きな軸力が生じる特性がある。この特性を利用し、第一斜材８と第二斜材１０の位置に制振装置１１を配置する。
曲げでなく軸力を伝える柱１、梁２と第一下弦材４、第二下弦材６の相対的な変位に対して減衰力を与える制振装置１１を用いる。実際は図１に示すように、第一斜材８と第二斜材１０のどちらかの部分に剛性と減衰性を有する制振装置１１を用いる。第二斜材１０に用いた場合は鉛直荷重に対する性能（床振動）を高め居住性を向上させ、第一斜材８に用いた場合には、水平荷重に対する性能（耐震性）を高め、安全性を向上させるものである。 As described above, as shown in FIG. 2, the second diagonal member 10 is added to the frame form of FIG. 10, and the beam 2 as the upper chord member can be divided into two at the center of the span. As shown in FIG. 11 and FIG. 12, the joining portion of the first diagonal member 8 has to be provided with a large number of joining tools 14 at the joining portion of the first oblique member 8 having a short length, and the short portion is densely packed. 3 and 4, the first diagonal member 8 is divided into two members because there is a concern about the decrease in the strength of the first diagonal member 8 and the certainty of the stress transmission. The first lower chord material 4 and the second lower chord material 6 are sandwiched between the two materials and joined with bolts. In the first joint 17 of FIG. 4, the compression force and the tensile force are caused by the indentation of the member. For other joints, for example, the second joint 18, the compression force is caused by the indentation of the member, and the tensile force is applied to the joint 14 (bolt or drift). Resist at pin).
Due to the shape of the frame, the first diagonal member 8 in FIG. 2 has a characteristic that a large axial force equivalent to that of the first lower chord member 4 which is a member having the largest axial force is generated with respect to a horizontal load. In addition, the second diagonal member 10 in the figure has a characteristic that a large axial force is generated with respect to a vertical load. Using this characteristic, the damping device 11 is arranged at the position of the first diagonal member 8 and the second diagonal member 10.
A vibration damping device 11 is used that applies a damping force to the relative displacement of the column 1, the beam 2, the first lower chord material 4, and the second lower chord material 6 that transmits axial force instead of bending. Actually, as shown in FIG. 1, a vibration damping device 11 having rigidity and damping properties is used at one of the first diagonal member 8 and the second diagonal member 10. When used for the second diagonal member 10, the performance (floor vibration) against vertical load is increased to improve the habitability, and when used for the first diagonal member 8, the performance against horizontal load (seismic resistance) is increased and safety is ensured. It improves the performance.

木造の建物における門型フレームに相当する架構形式には種々応用することができる。 Various applications can be applied to the frame structure corresponding to the gate-type frame in a wooden building.

（ａ）は、制振装置を第二斜材に設けたブレース構造による制振装置付門型フレームを示す概略説明図、（ｂ）は制振装置を第一斜材に設けたブレース構造による制振装置付門型フレームを示す概略説明図である。(A) is schematic explanatory drawing which shows the gate type | mold frame with a damping device by the brace structure which provided the damping device in the 2nd diagonal material, (b) by the brace structure which provided the damping device in the 1st diagonal material It is a schematic explanatory drawing which shows a gate type | mold frame with a damping device. 制振装置を取り付ける前の本願発明の第一実施例であるブレース構造による制振装置付門型フレームを示す全体概略正面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a whole schematic front view which shows the gate type | mold frame with a damping device by the brace structure which is the 1st Example of this invention before attaching a damping device. 図２と同様に、制振装置を取り付ける前の本願発明の第二実施例である第一斜材を二材に分割して第一下弦材、第二下弦材を挟み込むようにして固定接合したブレース構造による制振装置付門型フレームを示す全体概略正面図である。As in FIG. 2, the first diagonal member according to the second embodiment of the present invention before attaching the vibration damping device is divided into two parts and fixedly joined so as to sandwich the first lower chord material and the second lower chord material. It is the whole schematic front view which shows the gate type | mold frame with a damping device by the brace structure which was made. 図３で示した第二実施例の要部を示す正面図である。It is a front view which shows the principal part of the 2nd Example shown in FIG. 曲げ降伏型接合部の接合形式を示すもので、（ａ）は二面せん断に木材側材を用いたもの、（ｂ）は二面せん断に鋼板側材を用いたもの、（ｃ）は二面せん断に鋼板を挿入したものを各々示す概略正面図である。It shows the joining type of the bending yield type joint part, (a) using wood side material for two-sided shear, (b) using steel plate side material for two-sided shearing, (c) It is a schematic front view which each shows what inserted the steel plate into the surface shear. ラーメン構造のモデルケースとして２階建て住宅を想定した架構を示す概略正面図である。It is a schematic front view which shows the frame which assumed the two-story house as a model case of a ramen structure. ブレース構造の門型フレームを示す概略正面図である。It is a schematic front view which shows the portal frame | frame of a brace structure. 従来のラーメン構造の門型フレームを示す概略正面図である。It is a schematic front view which shows the portal frame of the conventional ramen structure. 門型フレームに制振装置を組み込んだ従来技術で、例えば（ａ）のような高減衰ゴムによる一実施例、（ｂ）はオイルダンパー、高減衰ゴムによる一実施例、（ｃ）は建物を構成する耐力壁の中に制振壁を組み込んだ一実施例を示す概略正面図である。In the prior art in which a damping device is incorporated in a gate-type frame, for example, (a) one embodiment using high damping rubber, (b) one embodiment using oil damper, high damping rubber, (c) building. It is a schematic front view which shows one Example which incorporated the damping wall in the load bearing wall which comprises. ブレース構造における架構形成を示す概略説明図である。It is a schematic explanatory drawing which shows frame formation in a brace structure. 図３における第二実施例の一要部である接合部を拡大して示す正面図である。It is a front view which expands and shows the junction part which is the principal part of the 2nd Example in FIG. 図３における第二実施例の接合部を示す正面図である。It is a front view which shows the junction part of the 2nd Example in FIG.

符号の説明Explanation of symbols

１・・・・柱２・・・・梁
３・・・・柱の下部４・・・・第一下弦材
５・・・・梁中央部６・・・・第二下弦材
７・・・・交点８・・・・第一斜材
９・・・・角部１０・・・・第二斜材
１１・・・・制振装置１２・・・・主材
１３・・・・側材１４・・・・接合具
１５・・・・鋼板１６・・・・切り目
１７・・・・第一接合部１８・・・・第二接合部 1 .... Column 2 .... Beam 3 .... Lower part of column 4 .... First lower chord material 5 .... Beam center 6 ... Second lower chord material 7 .... · · Intersection 8 · · · first diagonal 9 · · · corner 10 · · · second diagonal 11 · · · damping device 12 · · · main material 13 · · · side material 14... Joint 15 .. Steel plate 16 .. Cut 17... First joint 18.

Claims

上弦材である柱と梁からなる架構形式の門型フレームにおいて、柱の下部から梁に向って斜めに設けた第一下弦材と、梁中央部から柱に向って斜めに設けた第二下弦材と、この第一下弦材と第二下弦材の交点と接合する長さの短い第一斜材を、前記柱と梁の交点である角部から設け、さらに梁の中央部より柱側に寄った適宜部位に第二斜材を、前記第一下弦材、第二下弦材、第一斜材の交点に向って設け、これらをボルト等の固定具で接合固定し、加えて前記第一斜材及び、または第二斜材に制振装置を設けたことを特徴とするブレース構造による制振装置付門型フレーム。 In a frame-type portal frame consisting of columns and beams that are upper chord materials, the first lower chord material provided diagonally from the bottom of the column toward the beam and the second provided diagonally from the center of the beam toward the column The lower chord material and the first diagonal material having a short length to be joined to the intersection of the first lower chord material and the second lower chord material are provided from the corner portion which is the intersection of the column and the beam. A second diagonal material is provided at an appropriate part near the side, facing the intersection of the first lower chord material, the second lower chord material, and the first diagonal material, and these are joined and fixed with a fixture such as a bolt, A gate-type frame with a damping device having a brace structure, wherein a damping device is provided on the first diagonal member and / or the second diagonal member.

長さの短い第一斜材を二材に分け、その二材により第一下弦材、第二下弦材を挟み込み、ボルト等の固定具で接合したことを特徴とする請求項１に記載のブレース構造による制振装置付門型フレーム。 The first diagonal material having a short length is divided into two materials, the first lower chord material and the second lower chord material are sandwiched between the two materials, and are joined by a fixture such as a bolt. A portal frame with a vibration control device using a brace structure.