JP2000045538A - Seismic control reinforcement structure of existing building - Google Patents
Seismic control reinforcement structure of existing buildingInfo
- Publication number
- JP2000045538A JP2000045538A JP10217616A JP21761698A JP2000045538A JP 2000045538 A JP2000045538 A JP 2000045538A JP 10217616 A JP10217616 A JP 10217616A JP 21761698 A JP21761698 A JP 21761698A JP 2000045538 A JP2000045538 A JP 2000045538A
- Authority
- JP
- Japan
- Prior art keywords
- existing
- damping element
- portal frame
- beams
- stud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002787 reinforcement Effects 0.000 title claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 238000013016 damping Methods 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Building Environments (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
(57)【要約】
【課題】既存建築物の補強に際し、柱・梁に囲まれた開
口部に制震要素を組み込んだ補強構面を出入り口用等の
開口を確保して増設でき、かつ地震による入力エネルギ
ーを制震要素で吸収して数少ない補強要素の増設で既存
の建築物の耐震性を向上でき、さらに既存の梁に耐力上
の余裕が無くても補強構面を構築できるようにする。
【解決手段】既存建築物の柱１、１と梁２、３で囲まれ
た開口部４に、柱５ａと梁５ｂで構成される鋼製の門型
フレーム５を固定し、その内側に鋼製の間柱６を１つま
たは複数設け、出入り口等の開口４ａ、４ｂ、４ｃを確
保し、上端が梁５ｂと一体で下端が床スラブ９に後施工
アンカー１０等で固定された間柱６を上下に分離し、上
下の間柱６−１、６−２を弾塑性ダンパー７等の制震要
素により連結し、この制震要素の変形で地震エネルギー
を吸収する。
(57) [Summary] [Problem] To reinforce an existing building, it is possible to add a reinforcing structure incorporating a damping element to the opening surrounded by columns and beams while securing openings for entrances and exits, and an earthquake Input energy by the damping element to improve the seismic resistance of existing buildings by adding a few reinforcing elements, and to be able to construct a reinforced structure even if the existing beams do not have sufficient strength capacity . A steel portal frame (5) composed of columns (5a) and beams (5b) is fixed to an opening (4) surrounded by columns (1,1) and beams (2,3) of an existing building. One or a plurality of studs 6 are provided to secure openings 4a, 4b, 4c such as entrances and the like. And the upper and lower studs 6-1 and 6-2 are connected by a damping element such as an elastic-plastic damper 7, and the seismic energy is absorbed by deformation of the damping element.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、耐震性の低い既存
建築物に対して、制震装置を組み込んだ補強要素を増設
することにより、既存建築物を制震化する制震補強構造
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-seismic structure for an existing building having low seismic resistance by adding a reinforcing element incorporating a vibration control device to the existing building to control the existing building. It is.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】従来、耐
震性の低い既存の鉄筋コンクリート建物を耐震補強する
場合、新たに壁あるいは鉄骨枠組みブレースを組み込ん
だ耐震要素を増設する方法が採用されていた。2. Description of the Related Art Conventionally, when an existing reinforced concrete building with low seismic resistance is seismically reinforced, a method of adding a seismic element incorporating a new wall or a steel frame brace has been adopted. .
【０００３】しかし、特に、建物内部で耐震補強しよう
とすると、必要な補強構面数を確保するために、廊下や
部屋への出入り口が確保できなくなり、結果として建物
の使用勝手を著しく低下させることが多いという問題が
あった。[0003] However, in particular, when it is attempted to reinforce earthquake resistance inside a building, entrances to corridors and rooms cannot be secured in order to secure the required number of reinforcing structures, and as a result, the usability of the building is significantly reduced. There was a problem that there were many.
【０００４】本発明は、このような問題点を解消すべく
なされたもので、その目的は、既存建築物の柱・梁に囲
まれた開口部に制震要素を組み込んだ補強構面を出入り
口用等の開口を確保して増設することができると共に、
地震により建築物に入力されたエネルギーを制震要素で
吸収して数少ない補強要素の増設で既存の建築物の耐震
性を向上させることができ、さらに既存の梁に耐力上の
余裕が無くても補強構面を構築することができる既存建
築物の制震補強構造を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a reinforcement structure incorporating an anti-vibration element in an opening surrounded by columns and beams of an existing building. It is possible to secure additional openings for use, etc.
The energy input to the building due to the earthquake is absorbed by the damping element, and the reinforcement of the existing building can be improved by adding a few reinforcing elements, and even if the existing beams do not have enough capacity for strength. An object of the present invention is to provide a seismic control reinforcement structure of an existing building capable of constructing a reinforcement structure.
【０００５】[0005]
【課題を解決するための手段】本発明の既存建築物の制
震補強構造は、既存建築物の柱と梁で囲まれた開口部の
内側に鋼製の門型フレームを固定し、この門型フレーム
内に鋼製の間柱を１つまたは複数設け、間柱の下端は床
スラブに後施工アンカーや樹脂接着剤等で固定し、この
間柱を上下に分離し、上下の間柱を制震要素（弾塑性ダ
ンパー、オイルダンパー、粘性ダンパー，粘弾性ダンパ
ーなど）により連結して構成されていることを特徴とす
る（請求項１：図１、図２参照）。間柱の上部は、門型
フレームの梁と一体的に形成し、あるいは門型フレーム
の梁に溶接等で固定するなどして、門型フレームと間柱
を一体化する。また、間柱はその下端近くで分断して制
震要素を配置するのが好ましい。According to the present invention, there is provided a seismic control and reinforcement structure for an existing building, in which a steel portal frame is fixed inside an opening surrounded by columns and beams of the existing building. One or more steel studs are provided in the mold frame, and the lower ends of the studs are fixed to the floor slab with post-installed anchors or resin adhesives, the studs are separated vertically, and the upper and lower studs are seismically controlled elements ( It is characterized by being connected by an elasto-plastic damper, an oil damper, a viscous damper, a viscoelastic damper, etc. (see claim 1: FIGS. 1 and 2). The upper part of the stud is formed integrally with the beam of the portal frame, or is fixed to the beam of the portal frame by welding or the like, thereby integrating the portal frame and the pillar. Further, it is preferable that the stud is divided near the lower end and the damping element is arranged.
【０００６】柱と梁に囲まれた開口部に、制震要素を組
み込んだ１つまたは複数の間柱が形成され、開口部の左
右両側や中央部に、廊下や部屋への出入り口等のための
開口が容易に確保される。地震により建築物自体が変形
すると、同時に制震要素も変形を受け、この制震要素は
変形により振動エネルギーを吸収して制震効果を発揮
し、補強構面の増設数が少なくても既存の建築物の耐震
性を向上させることができる。制震要素に発生する力
は、門型フレームを介して既存の梁に水平力として伝達
され、付加応力として生じる曲げモーメントおよび剪断
力は門型フレームで全てが負担され既存の梁には伝わら
ないため、既存の梁の耐力の余裕に関わらず補強構面を
構築できる。また、制震要素は下端に近い位置に設置す
ることによって間柱下端の曲げモーメントが小さくなる
ため、間柱を床スラブに固定するための後施工アンカー
や樹脂接着剤等の設計が可能となり、かつ制震要素を一
構面内に必要量確保することができる。[0006] One or more studs incorporating damping elements are formed in an opening surrounded by columns and beams, and are provided on both left and right sides and in the center of the opening for entrances to corridors and rooms. An opening is easily secured. When the building itself is deformed by the earthquake, the damping element is also deformed at the same time, and this damping element absorbs vibration energy by deformation and exerts a damping effect, and even if the number of reinforcement The earthquake resistance of the building can be improved. The force generated in the damping element is transmitted as horizontal force to the existing beam via the portal frame, and the bending moment and shear force generated as additional stress are all carried by the portal frame and not transmitted to the existing beam. Therefore, it is possible to construct a reinforcing structure regardless of the strength of the existing beams. In addition, since the bending moment at the lower end of the stud is reduced by installing the damping element near the lower end, it is possible to design a post-installed anchor or resin adhesive to fix the stud to the floor slab, and The required amount of seismic elements can be secured in one plane.
【０００７】また、必要となる開口高さにより設置でき
る門型フレームの梁の剛性が制約され、間柱の変形が大
きくなり、制震要素の変形が相対的に小さくなって、エ
ネルギーを吸収する効果が低くなることが懸念される
が、既存の梁の耐力に余裕がある場合には、既存の梁と
門型フレームの梁の側面同士を接合金物を介して部分的
に接合する（請求項２：図４参照）。このように門型フ
レームの梁を接合金物で既存の梁に固定することで、門
型フレームの梁の変形を拘束し、間柱の変形を小さくし
て制震要素のエネルギーを吸収する効果を高めることが
可能となる。[0007] Further, the rigidity of the beam of the portal frame that can be installed is restricted by the required opening height, the deformation of the studs increases, the deformation of the damping element becomes relatively small, and the energy is absorbed. However, if the existing beam has sufficient strength, the side surfaces of the existing beam and the beam of the portal frame are partially joined to each other via a joint metal. : See FIG. 4). In this way, by fixing the beam of the portal frame to the existing beam with the joint hardware, the deformation of the beam of the portal frame is restrained, the deformation of the stud is reduced, and the effect of absorbing the energy of the damping element is enhanced. It becomes possible.
【０００８】[0008]
【発明の実施の形態】以下、本発明を図示する実施の形
態に基づいて説明する。図１は本発明の既存の鉄筋コン
クリート造の建物における制震補強構造の基本的な実施
形態を示したものである。図２はその制震補強構造の具
体的な実施形態の例を示したものである。図３は制震補
強構面の上端および下端の接合部の詳細を示したもので
ある。図４は制震補強構造の別の実施形態を示したもの
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 shows a basic embodiment of a vibration damping reinforcement structure in an existing reinforced concrete building of the present invention. FIG. 2 shows an example of a specific embodiment of the vibration control reinforcement structure. FIG. 3 shows details of the joint at the upper end and the lower end of the seismic control reinforcement structure. FIG. 4 shows another embodiment of the vibration damping reinforcement structure.
【０００９】図１において、既存の鉄筋コンクリート造
の骨組みにおける柱１、１と梁２、３で囲まれた開口部
４の内側に鋼製の門型フレーム５を固定し、この門型フ
レーム５の内部に鋼製の間柱６を設けて開口部４内に出
入り口等のための開口４ａ、４ｂ、４ｃを確保し、この
間柱６はその下部において上下に分断し、門型フレーム
５の梁５ｂと一体の上部間柱６−１と、下部の梁３およ
び床スラブ９に固定した下部間柱６−２とを弾塑性ダン
パー７で連結して地震エネルギーを吸収するようにして
いる。In FIG. 1, a steel portal frame 5 is fixed inside an opening 4 surrounded by columns 1, 1 and beams 2, 3 in an existing reinforced concrete frame. A steel stud 6 is provided inside to secure openings 4a, 4b, and 4c for entrances and the like in the opening 4, and this stud 6 is vertically divided at a lower portion thereof and is connected to the beam 5b of the portal frame 5. The integral upper stud 6-1 and the lower stud 6-2 fixed to the lower beam 3 and the floor slab 9 are connected by an elasto-plastic damper 7 to absorb seismic energy.
【００１０】門型フレーム５は、Ｈ形鋼等の鉄骨材から
なる柱５ａと梁５ｂから構成され、弾塑性ダンパー７に
より生じる付加応力に対して許容応力度設計がなされ
る。この門型フレーム５の柱５ａ、梁５ｂは、それぞれ
柱１の内側面、上部の梁２の下面に接着剤８やモルタル
等で固定される。また、柱５ａの下端は、床スラブ９に
接着剤８やモルタル等と後施工アンカー１０で固定され
る（図２参照）。The portal frame 5 includes a column 5a and a beam 5b made of a steel frame material such as an H-section steel, and is designed to have an allowable stress against an additional stress generated by the elastic-plastic damper 7. The columns 5a and the beams 5b of the portal frame 5 are fixed to the inner surface of the column 1 and the lower surface of the upper beam 2, respectively, with an adhesive 8 or mortar. Further, the lower end of the column 5a is fixed to the floor slab 9 with an adhesive 8, mortar, or the like with a post-installed anchor 10 (see FIG. 2).
【００１１】このような門型フレーム５において、弾塑
性ダンパー７で発生する力は、接着部を介して水平力と
して上部の梁２に伝わるが、付加応力として生じる曲げ
モーメントおよび剪断力は門型フレーム５の鉄骨部材で
全てが負担され、上部の梁２には伝達しない。従って、
既存の梁２の曲げ耐力や剪断耐力に余裕がなかったとし
ても、補強せずに当該開口部４を補強構面として用いる
ことができる。なお、門型フレーム５として鉄骨の例を
示したが、これに限らず、その他の構造・形状を採用で
きることはいうまでもない。In such a portal frame 5, the force generated by the elasto-plastic damper 7 is transmitted to the upper beam 2 as a horizontal force via the bonding portion. All are borne by the steel members of the frame 5 and do not transmit to the upper beam 2. Therefore,
Even if there is no margin in the bending strength or shear strength of the existing beam 2, the opening 4 can be used as a reinforcing structure without reinforcement. In addition, although the example of the steel frame was shown as the gate type frame 5, it is needless to say that the present invention is not limited to this, and other structures and shapes can be adopted.
【００１２】鋼製の間柱６は、例えば、図２に示すよう
に、所定幅の鋼板６ａと、この鋼板６ａを両端と中間で
補強する一体的な縦リブ６ｂと、鋼板６ａの下部に位置
するＴ形鋼等からなる下部鉄骨６ｃなどから構成され、
後述する理由から、下部鉄骨６ｃを上部間柱６−１から
分離した下部間柱６−２としている。なお、間柱６は鋼
板・縦リブ・鉄骨材等からなる場合を示したが、これに
限定されることなく、その他の構造・形状を採用できる
ことはいうまでもない。As shown in FIG. 2, for example, the steel stud 6 is a steel plate 6a having a predetermined width, an integral vertical rib 6b for reinforcing the steel plate 6a at both ends and in the middle, and a steel plate 6a located at a lower portion of the steel plate 6a. The lower steel frame 6c made of T-shaped steel or the like,
For the reason described below, the lower steel column 6c is a lower stud 6-2 separated from the upper stud 6-1. In addition, although the case where the stud 6 is made of a steel plate, a vertical rib, a steel frame material or the like is shown, it is needless to say that the present invention is not limited to this and other structures and shapes can be adopted.
【００１３】上部間柱６−１は、門型フレーム５の梁５
ｂから一体的に垂設している。図２の図示例では、梁５
ｂの下面に突出板を一体的に形成しておき、この突出板
に中間板を継手板で接合することで、梁５ｂに固定され
た上部間柱６−１を構成している。なお、これに限ら
ず、門型フレーム５の梁５ｂの下面に上部間柱６−１の
上端を溶接等で接続するようにしてもよい（図１参
照）。The upper stud 6-1 is connected to the beam 5 of the portal frame 5.
b. In the example shown in FIG.
A protruding plate is integrally formed on the lower surface of b, and an intermediate plate is joined to this protruding plate by a joint plate to form an upper stud 6-1 fixed to the beam 5b. The present invention is not limited to this, and the upper end of the upper stud 6-1 may be connected to the lower surface of the beam 5b of the portal frame 5 by welding or the like (see FIG. 1).
【００１４】また、図２(a) では、門型フレーム５を左
右の逆Ｌ字型の鉄骨部材と梁中央の鉄骨部材を組み合わ
せて構成し、左右一対の上部間柱６−１を門型フレーム
５の中央に配設し、左右両側に出入り口等の開口４ａ、
４ｂを確保している。図２(b) では、門型フレーム５を
左右の逆Ｌ字型の鉄骨部材を組み合わせて構成し、この
門型フレーム５の左右両側に一対の上部間柱６−１を間
隔をおいて配設し、中央部に大きな開口４ａを確保して
いる。In FIG. 2A, the portal frame 5 is formed by combining left and right inverted L-shaped steel members and a steel member at the center of the beam, and a pair of left and right upper studs 6-1 are connected to the portal frame. 5, openings 4 a such as doorways on both left and right sides,
4b is secured. In FIG. 2B, the portal frame 5 is configured by combining left and right inverted L-shaped steel members, and a pair of upper studs 6-1 are arranged on both left and right sides of the portal frame 5 with an interval. In addition, a large opening 4a is secured at the center.
【００１５】下部間柱６−２としての下部鉄骨６ｃは、
下部の梁３および床スラブ９に、接着剤８やモルタル等
と後施工アンカー１０で固定する。ここで、一般に、後
施工アンカーは引張強度が低いため、床スラブへの下部
間柱の直接接合は、曲げモーメントに対する抵抗が弱
い。そのため、制震要素を組み込む位置、即ち間柱６の
分断位置を下端に近い位置とし、下部間柱６−２の床ス
ラブ９への接合部に作用する曲げモーメントを低減して
いる。The lower steel frame 6c as the lower stud 6-2 is
An adhesive 8 and mortar are fixed to the lower beam 3 and the floor slab 9 with a post-installed anchor 10. Here, since the post-installed anchor generally has a low tensile strength, direct joining of the lower stud to the floor slab has low resistance to bending moment. Therefore, the position where the damping element is incorporated, that is, the dividing position of the stud 6 is set to a position near the lower end, and the bending moment acting on the joint of the lower stud 6-2 to the floor slab 9 is reduced.
【００１６】上部間柱６−１と下部間柱６−２との間に
は、適当な間隙が形成されるようにし、両者を制震要素
としての弾塑性ダンパー７で連結する。この弾塑性ダン
パー７は、例えば鋼板７ａの中間部にハニカム形状の孔
７ｂを設けたものであり（図２参照）、上部間柱６−１
の鋼板６ａおよび下部間柱６−２のウェブを鋼板７ａで
挟み、ボルト１１で締結する（図３(b) 参照) 。また、
この弾塑性ダンパー７は、図２の図示例では、左右一対
の上部間柱６−１のそれぞれの下部に２組、合計４組配
設している。なお、制震要素としては、これに限らず、
その他の弾塑性ダンパー、オイルダンパー、粘性ダンパ
ー、粘弾性ダンパー等を用いることができる。An appropriate gap is formed between the upper stud 6-1 and the lower stud 6-2, and both are connected by an elastic-plastic damper 7 as a vibration damping element. This elasto-plastic damper 7 has, for example, a honeycomb-shaped hole 7b provided in the middle of a steel plate 7a (see FIG. 2), and an upper stud 6-1.
The steel plate 6a and the web of the lower stud 6-2 are sandwiched between the steel plates 7a and fastened with bolts 11 (see FIG. 3 (b)). Also,
In the example shown in FIG. 2, two sets of the elasto-plastic dampers 7 are provided under each of the pair of left and right upper studs 6-1, for a total of four sets. The damping element is not limited to this,
Other elasto-plastic dampers, oil dampers, viscous dampers, viscoelastic dampers, and the like can be used.
【００１７】本発明では、間柱の取付く既存の梁に耐力
上の余裕が無くても補強構面を構築できることを特徴と
しているが、必要となる開口高さにより設置できる門型
フレーム５の梁５ｂの剛性が制約され、間柱６−１の回
転による変形が大きくなり、制震要素７での変形が相対
的に小さくなって、エネルギーを吸収する効果が低くな
ることが懸念される。このような場合、既存の梁の耐力
に余裕がある場合には、図４に示すように、何箇所か既
存の梁２と門型フレーム５の梁５ｂの側面同士を接合金
物１２で接合することにより、梁５ｂの曲げ変形によっ
て生じる引張り力に抵抗し、梁５ｂの回転変形を拘束す
る。そうすると、間柱６−１の制震要素位置での変形は
小さくなり、相対的に制震要素７での変形が大きくな
り、エネルギーを吸収する効果を高めることができる。
接続する箇所および数は限定されるものではなく、梁貫
通などの障害を避けた位置に設けることで、その効果を
発揮できる。The present invention is characterized in that it is possible to construct a reinforcing surface even if the existing beam to which the studs are attached does not have a margin for the strength, but the beam of the portal frame 5 which can be installed according to the required opening height. There is a concern that the rigidity of the stud 5b is restricted, the deformation due to the rotation of the stud 6-1 becomes large, the deformation in the vibration damping element 7 becomes relatively small, and the effect of absorbing energy becomes low. In such a case, if there is room in the proof stress of the existing beam, as shown in FIG. 4, the existing beam 2 and the side surfaces of the beam 5b of the portal frame 5 are joined to each other with the joint hardware 12. This resists the tensile force generated by the bending deformation of the beam 5b and restrains the rotation deformation of the beam 5b. Then, the deformation of the stud 6-1 at the position of the vibration damping element is reduced, and the deformation of the vibration damping element 7 is relatively increased, so that the effect of absorbing energy can be enhanced.
The locations and number of connections are not limited, and the effect can be exhibited by providing them at positions avoiding obstacles such as beam penetration.
【００１８】図４に示す例では、板状の接合金物１２の
上部を上部の梁２の両側面に添接し貫通ボルト１３で固
定し、接合金物１２の下部を門型フレーム５の梁５ｂの
両側面にボルト１４で固定する。ここでは、Ｈ形鋼の梁
５ｂの両側面に補強リブ１５および溝形鋼１６を溶接で
取付け、この溝形鋼１６に接合金物１２の下部をボルト
１４で固定している。In the example shown in FIG. 4, the upper part of the plate-shaped joint 12 is attached to both side surfaces of the upper beam 2 and fixed with the through bolts 13, and the lower part of the joint 12 is connected to the beam 5 b of the portal frame 5. It is fixed on both sides with bolts 14. Here, reinforcing ribs 15 and channel steels 16 are attached to both sides of the H-shaped steel beam 5b by welding, and the lower part of the joining hardware 12 is fixed to the channel steel 16 with bolts 14.
【００１９】[0019]
【発明の効果】本発明の既存建築物の制震補強構造は、
既存建築物の柱と梁で囲まれた開口部の内側に鋼製の門
型フレームを固定し、この門型フレーム内に鋼製の間柱
を１つまたは複数設け、間柱の下端は後施工アンカーや
樹脂接着剤等で床スラブに固定し、この間柱を上下に分
離し、上下の間柱を制震要素により連結するようにした
ため、次のような効果を奏する。 (1) 柱と梁に囲まれた開口部に制震要素を組み込んだ複
数の間柱が形成され、開口部の左右両側や中央部に、廊
下や部屋への出入り口等のための開口が容易に確保され
るため、従来の建物の使用勝手の低下を解消することが
できる。 (2) 地震により建築物自体が変形すると、同時に制震要
素も変形を受け、この制震要素は変形により振動エネル
ギーを吸収して制震効果を発揮し、補強構面の増設数が
少なくても既存の建築物の耐震性を向上させることがで
きるため、建物の使用勝手が向上すると共に、比較的安
価な既存建築物の補強構造を得ることができる。 (3) 鋼製の門型フレームを設けることにより、制震要素
による付加応力を直接梁に水平力として伝達するので、
既存の梁の補強が不要となり、あるいは既存の梁に耐力
上の余裕が無くても補強構面を構築することができる。 (4) 梁下のみで工事ができるので、梁貫通等との干渉が
なく施工性が高い。 (5) 既存の梁の耐力に余裕がある場合には、何箇所かで
既存の梁と門型フレームを接合することで、制震要素の
エネルギー吸収効果を高めることができる。According to the present invention, the seismic control and reinforcement structure of an existing building is
A steel portal frame is fixed inside the opening surrounded by columns and beams of the existing building, and one or more steel studs are provided in this portal frame, and the lower end of the stud is a post-installed anchor. Since the studs are fixed to the floor slab with a resin adhesive or the like, the studs are vertically separated, and the upper and lower studs are connected by the damping element, the following effects are obtained. (1) Multiple studs incorporating damping elements are formed in the opening surrounded by columns and beams, and openings on the left and right sides and in the center of the opening are easily provided for entrances to corridors and rooms. As a result, it is possible to eliminate a decrease in the usability of the conventional building. (2) When the building itself is deformed by the earthquake, the damping element is also deformed at the same time, and this damping element absorbs vibration energy by the deformation and exerts the damping effect, and the number of additional reinforcement structures is small. Also, since the seismic resistance of the existing building can be improved, the usability of the building is improved, and a relatively inexpensive reinforcing structure for the existing building can be obtained. (3) By providing a steel portal frame, the added stress from the damping element is transmitted directly to the beam as horizontal force.
Reinforcement of an existing beam is not required, or a reinforcement structure can be constructed even if the existing beam does not have a margin in strength. (4) Construction can be performed only under the beam, so there is no interference with beam penetration and the like, and workability is high. (5) If the existing beams have sufficient strength, the energy absorption effect of the damping elements can be enhanced by joining the existing beams and the portal frame at several points.
【図１】本発明の既存建築物の制震補強構造の基本的な
実施形態を示す正面図である。FIG. 1 is a front view showing a basic embodiment of a vibration control and reinforcement structure for an existing building according to the present invention.
【図２】本発明の既存建築物の制震補強構造の具体的な
実施形態を示す正面図であり、(a) は左右両側に開口を
設けた場合、(b) は中央に開口を設けた例である。FIG. 2 is a front view showing a concrete embodiment of a seismic control and reinforcement structure for an existing building according to the present invention, where (a) has openings on both the left and right sides, and (b) has openings in the center. This is an example.
【図３】本発明の既存建築物の制震補強構造の梁への接
合部を示す断面図であり、(a)は上端の接合部、(b) は
下端の接合部を示す。FIGS. 3A and 3B are cross-sectional views showing a joint of the existing building to a beam of the seismic damping reinforcement structure of the present invention, wherein FIG. 3A shows a joint at an upper end and FIG. 3B shows a joint at a lower end.
【図４】本発明の既存建築物の制震補強構造の既存の梁
の耐力に余裕がある場合の実施形態であり、(a) は正面
図、(b) は(a) のｂ−ｂ線断面図である。FIG. 4 is an embodiment in which the existing beams of the seismic control and reinforcement structure of an existing building of the present invention have sufficient strength, (a) is a front view, and (b) is bb in (a). It is a line sectional view.
１……柱 ２……上部の梁 ３……下部の梁 ４……開口部 ４ａ…開口 ４ｂ…開口 ４ｃ…開口 ５……門型フレーム ５ａ…柱 ５ｂ…梁 ６……間柱 ６−１…上部間柱 ６−２…下部間柱 ６ａ…鋼板 ６ｂ…縦リブ ６ｃ…下部鉄骨 ７……弾塑性ダンパー（制震要素） ７ａ…鋼板 ７ｂ…孔 ８……接着剤 ９……床スラブ １０……後施工アンカー １１……ボルト １２……接合金物 １３……貫通ボルト １４……ボルト １５……補強リブ １６……溝形鋼 DESCRIPTION OF SYMBOLS 1 ... pillar 2 ... upper beam 3 ... lower beam 4 ... opening 4a ... opening 4b ... opening 4c ... opening 5 ... portal frame 5a ... pillar 5b ... beam 6 ... stud 6-1 ... Upper stud 6-2 Lower stud 6a Steel plate 6b Vertical rib 6c Lower steel frame 7 Elastic-plastic damper (vibration damping element) 7a Steel plate 7b Hole 8 Adhesive 9 Floor slab 10 Rear Construction anchor 11 Bolt 12 Joint hardware 13 Penetration bolt 14 Bolt 15 Reinforcement rib 16 Channel steel
───────────────────────────────────────────────────── フロントページの続き (72)発明者 坂本 光雄 東京都港区元赤坂１丁目２番７号 鹿島建 設株式会社内 (72)発明者 牧部 一成 東京都港区元赤坂１丁目２番７号 鹿島建 設株式会社内 Ｆターム(参考） 2E176 AA03 AA04 BB13 BB21 BB28 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Mitsuo Sakamoto, Inventor Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Kazunari Makibe 1-2-2, Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. F term (reference) 2E176 AA03 AA04 BB13 BB21 BB28
Claims (2)
内側に鋼製の門型フレームを固定し、この門型フレーム
内に鋼製の間柱を１つまたは複数設け、間柱の下端は床
スラブに固定し、この間柱を上下に分離し、上下の間柱
を制震要素により連結して構成されていることを特徴と
する既存建築物の制震補強構造。1. A steel portal frame is fixed inside an opening surrounded by columns and beams of an existing building, and one or more steel studs are provided in the portal frame. The lower end is fixed to the floor slab, this stud is vertically separated, and the upper and lower studs are connected by a damping element.
物を介して部分的に接合して構成されていることを特徴
とする請求項１に記載の既存建築物の制震補強構造。2. The seismic control reinforcement structure for an existing building according to claim 1, wherein the existing beam and the beam of the portal frame are partially joined via a joining hardware. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21761698A JP3371815B2 (en) | 1998-07-31 | 1998-07-31 | Seismic control reinforcement structure of existing building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21761698A JP3371815B2 (en) | 1998-07-31 | 1998-07-31 | Seismic control reinforcement structure of existing building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000045538A true JP2000045538A (en) | 2000-02-15 |
| JP3371815B2 JP3371815B2 (en) | 2003-01-27 |
Family
ID=16707094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21761698A Expired - Fee Related JP3371815B2 (en) | 1998-07-31 | 1998-07-31 | Seismic control reinforcement structure of existing building |
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| Country | Link |
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| JP (1) | JP3371815B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095430A (en) * | 2006-10-13 | 2008-04-24 | Shimizu Corp | Seismic wall structure |
| KR101705318B1 (en) * | 2016-05-23 | 2017-02-09 | 주식회사 유니크내진시스템 | Window and door open type vibration control system between columns for building |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631647B (en) * | 2015-01-19 | 2016-11-16 | 江苏沪宁钢机股份有限公司 | High-rise damping damping unit |
-
1998
- 1998-07-31 JP JP21761698A patent/JP3371815B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095430A (en) * | 2006-10-13 | 2008-04-24 | Shimizu Corp | Seismic wall structure |
| KR101705318B1 (en) * | 2016-05-23 | 2017-02-09 | 주식회사 유니크내진시스템 | Window and door open type vibration control system between columns for building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3371815B2 (en) | 2003-01-27 |
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