JP3124515B2 - Building seismic reinforcement structure - Google Patents

Building seismic reinforcement structure

Info

Publication number
JP3124515B2
JP3124515B2 JP09228212A JP22821297A JP3124515B2 JP 3124515 B2 JP3124515 B2 JP 3124515B2 JP 09228212 A JP09228212 A JP 09228212A JP 22821297 A JP22821297 A JP 22821297A JP 3124515 B2 JP3124515 B2 JP 3124515B2
Authority
JP
Japan
Prior art keywords
brace
pedestal
yielding
yield strength
joined
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.)
Expired - Fee Related
Application number
JP09228212A
Other languages
Japanese (ja)
Other versions
JPH1161982A (en
Inventor
春夫 倉持
Original Assignee
ドーピー建設工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ドーピー建設工業株式会社 filed Critical ドーピー建設工業株式会社
Priority to JP09228212A priority Critical patent/JP3124515B2/en
Publication of JPH1161982A publication Critical patent/JPH1161982A/en
Application granted granted Critical
Publication of JP3124515B2 publication Critical patent/JP3124515B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Landscapes

  • Load-Bearing And Curtain Walls (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明はブレースを用いて
建物を耐震補強する建物の耐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 a seismic retrofit structure for a building in which a brace is used to reinforce the building.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】例えば
既設建物を耐震補強する場合、柱・梁のフレーム内にブ
レースを架設することが一般的な方法であるが、既設建
物のフレームに新たにブレースを架設するには、ブレー
スの端部を躯体に接合するためのブラケットを躯体に定
着させる必要があり、それにはブラケットを躯体に定着
させるための、躯体への孔明け作業を始め、煩雑な作業
を要することから、出願人は先に簡易な手段でブレース
を架設できる構造を特願平8-91170号において提案して
いる。
2. Description of the Related Art For example, in the case of seismic reinforcement of an existing building, it is a general method to install a brace in a column / beam frame. In order to install the brace, it is necessary to fix a bracket for joining the end of the brace to the skeleton, and this involves starting drilling work on the skeleton to fix the bracket to the skeleton. Because of the need for work, the applicant has previously proposed a structure in which a brace can be installed by simple means in Japanese Patent Application No. 8-91170.

【0003】これはブレースの端部を接合するための台
座をPC鋼材を用いて躯体に圧着接合することで、耐震
補強する上での作業数の削減と作業能率の効率を図り、
特にブレースの一部に降伏部を形成することで、ブレー
スの座屈を防止する特徴を持つ。
[0003] In this method, the base for joining the ends of the braces is press-bonded to the skeleton using a PC steel material, thereby reducing the number of operations required for seismic reinforcement and improving the efficiency of work efficiency.
In particular, by forming a yielding part in a part of the brace, it has a feature of preventing the buckling of the brace.

【0004】上記構造において、降伏部を形成した場
合、降伏部が他の部分に先行して引張降伏することにな
るが、先の出願では降伏部を台座に溶接しているため、
交換を台座毎しなければならない不便さがある。
In the above structure, when a yielding portion is formed, the yielding portion undergoes tensile yielding prior to other portions. However, in the prior application, the yielding portion is welded to the pedestal.
There is the inconvenience of having to exchange every pedestal.

【0005】この発明は先の出願を派生させたもので、
降伏した部材のみを交換可能な耐震補強構造を加えて提
案するものである。
[0005] This invention is derived from the earlier application,
It is proposed to add a seismic retrofit structure that can replace only the yielded members.

【0006】[0006]

【課題を解決するための手段】本発明ではブレースの一
部に、相対的に断面積が減少し、耐力が低下した降伏部
材を配置し、ブレースに着脱自在に接合することによ
り、降伏し、役目を終えた後の降伏部材のみの交換を可
能にする。
According to the present invention, a yielding member having a relatively reduced cross-sectional area and a reduced proof strength is arranged in a part of a brace and is detachably joined to the brace to yield. It is possible to replace only the yielding member after completing the role.

【0007】柱・梁のフレームにはその構面外から台座
がPC鋼材により圧着接合され、台座間にブレースが架
設される。ブレースは台座に接合される端部と端部から
分離する中間部からなり、端部と中間部との間に降伏部
材が配置され、端部と中間部に着脱自在に接合される。
ブレースの端部の降伏耐力は中間部の降伏耐力より小さ
く、降伏部材の降伏耐力はブレースの端部の降伏耐力よ
り小さい。
A pedestal is bonded to the column / beam frame from the outside of the construction thereof by using a PC steel material, and a brace is erected between the pedestals. The brace comprises an end joined to the pedestal and an intermediate part separated from the end, a yield member is disposed between the end and the intermediate part, and the brace is detachably joined to the end and the intermediate part.
The yield strength at the end of the brace is less than the yield strength at the middle, and the yield strength of the yield member is less than the yield strength at the end of the brace.

【0008】降伏部材はブレースが圧縮力により座屈す
る以前に引張力で降伏し、降伏後の塑性変形能力により
建物に入力する振動エネルギを集中的に吸収し、ブレー
ス本体の耐力低下を回避し、ブレース本体を健全に保
つ。
The yielding member yields by a tensile force before the brace buckles due to the compressive force, and intensively absorbs vibration energy input to the building by the plastic deformation ability after the yielding, thereby avoiding a decrease in the strength of the brace body. Keep the brace body healthy.

【0009】降伏部材の降伏後にブレース本体が健全に
保たれることで、交換をブレース本体毎行う必要がな
く、降伏部材がブレース本体に着脱自在に接合されてい
ることで、降伏部材のみの交換が容易に行える。
Since the brace body is kept healthy after the yielding member has surrendered, there is no need to replace the entire brace body, and since the yielding member is detachably joined to the brace body, only the yielding member can be replaced. Can be easily performed.

【0010】[0010]

【発明の実施の形態】この発明は図3に示すような柱・
梁のフレームにその構面外から台座3をPC鋼材4を用
いて圧着接合し、台座3,3間にブレース5を架設し、
その端部51,51を台座3に接合した耐震補強構造におい
て、図1,図2に示すようにブレース5の一部に、ブレ
ース5の本体に先行して引張降伏する降伏部材8を配置
し、ブレース5の本体に着脱自在に接合したものであ
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a column shown in FIG.
The pedestal 3 is press-bonded to the beam frame from the outside of the construction using the PC steel material 4, and a brace 5 is erected between the pedestals 3 and 3.
In the seismic retrofit structure in which the ends 51, 51 are joined to the pedestal 3, a yielding member 8 that tensile-yields prior to the main body of the brace 5 is arranged in a part of the brace 5 as shown in FIGS. , Which are detachably connected to the main body of the brace 5.

【0011】台座3は鋼材により、もしくはプレキャス
トコンクリートで製作され、PC鋼材4の配置位置に挿
通孔31が明けられる。鋼製の場合には、フランジプレー
トとウェブプレートを組み立てることにより製作され
る。
The pedestal 3 is made of steel or precast concrete, and an insertion hole 31 is formed at the position where the PC steel 4 is arranged. In the case of steel, it is manufactured by assembling a flange plate and a web plate.

【0012】ブレース5の端部51は台座3が鋼製の場合
には溶接やボルト接合により台座3に接合される。図
1,図2はブレース5がH形断面の場合を示すが、ここ
では台座3のフランジプレートに重なる端部51のフラン
ジを切欠き、端部51のウェブを台座3のフランジプレー
トに溶接している。台座3がプレキャストコンクリート
の場合には端部51は台座3のコンクリート中に埋め込ま
れる形で接合される。
When the pedestal 3 is made of steel, the end 51 of the brace 5 is joined to the pedestal 3 by welding or bolting. FIGS. 1 and 2 show the case where the brace 5 has an H-shaped cross section. Here, the flange of the end 51 overlapping the flange plate of the pedestal 3 is cut out, and the web of the end 51 is welded to the flange plate of the pedestal 3. ing. When the pedestal 3 is made of precast concrete, the ends 51 are joined so as to be embedded in the concrete of the pedestal 3.

【0013】柱1,または梁2の、台座3が接合される
箇所のPC鋼材4が挿通する位置には貫通孔21が明けら
れる(図面では台座3が柱1を貫通する場合がないため
柱1の貫通孔11は示されていない)。
A through hole 21 is formed in the column 1 or the beam 2 at a position where the pedestal 3 is to be joined and where the PC steel material 4 is inserted. One through hole 11 is not shown).

【0014】台座3は台座3自身と柱1,もしくは梁2
を貫通するPC鋼材4で躯体に圧着接合される。PC鋼
材4には主にPC鋼棒が使用され、その場合、PC鋼材
4の端部はナット7により柱1や梁2と台座3に定着さ
れる。挿通孔31と貫通孔21内にはグラウト材が充填され
るが、グラウト材とPC鋼材4との付着の有無は問わな
い。付着がなければ、PC鋼材4を後から再緊張でき
る。台座3と柱1,または台座3と梁2間には無収縮性
の目地モルタル6が充填される。
The pedestal 3 is composed of the pedestal 3 itself and the column 1 or the beam 2
Is bonded to the skeleton by the PC steel material 4 penetrating through. A PC steel bar is mainly used as the PC steel material 4. In this case, an end of the PC steel material 4 is fixed to the column 1, the beam 2 and the pedestal 3 by the nut 7. The grout material is filled in the insertion hole 31 and the through hole 21, but it does not matter whether or not the grout material and the PC steel material 4 adhere to each other. If there is no adhesion, the PC steel 4 can be re-tensioned later. Non-shrinkable joint mortar 6 is filled between the pedestal 3 and the column 1 or between the pedestal 3 and the beam 2.

【0015】図3は5層の建物の外周壁の外側に、桁行
方向に隣接する2フレーム間に亘って連続的にブレース
5を架設した場合で、特に2層のフレーム間にブレース
5を十字形に架設した場合を示す。図1は図3の一部拡
大図であり、図2は図2の縦断面図である。
FIG. 3 shows a case in which the braces 5 are continuously installed outside the outer peripheral wall of a five-story building between two frames adjacent in the girder direction. In particular, the braces 5 are sufficiently provided between the two-story frames. It shows the case where it is erected in a character shape. 1 is a partially enlarged view of FIG. 3, and FIG. 2 is a longitudinal sectional view of FIG.

【0016】降伏部材8はブレース5の本体に対して相
対的に断面積が減少し、耐力が低下した降伏部81を持
ち、ブレース5の一部に配置され、ブレース5に着脱自
在に接合される。
The yielding member 8 has a yielding portion 81 having a reduced sectional area relative to the main body of the brace 5 and a reduced proof strength, is disposed in a part of the brace 5, and is detachably joined to the brace 5. You.

【0017】降伏部材8はその交換のし易さから、ブレ
ース5の、台座3に接合される端部51と、端部51から分
離する中間部52との間に配置され、降伏部材8と端部51
間、及び降伏部材8と中間部52間に跨るスプライスプレ
ート9によってボルト10により端部51と中間部52に接合
される。
The yielding member 8 is disposed between an end portion 51 of the brace 5 joined to the pedestal 3 and an intermediate portion 52 separated from the end portion 51 for ease of replacement. End 51
The end portion 51 and the intermediate portion 52 are joined by bolts 10 by a splice plate 9 extending between the yielding member 8 and the intermediate portion 52.

【0018】降伏部材8はブレース5の一部に組み込ま
れるため、ブレース5と同一の断面材が使用されるが、
耐力が低下した部分である降伏部81は図2に示すように
ウェブに開口82を形成することにより、または図1に鎖
線で示すようにフランジを幅方向両側から切り欠くこと
により形成される。
Since the yielding member 8 is incorporated into a part of the brace 5, the same cross-sectional material as that of the brace 5 is used.
The yielded portion 81, which is a portion where the proof stress is reduced, is formed by forming an opening 82 in the web as shown in FIG. 2 or by notching the flange from both sides in the width direction as shown by a chain line in FIG.

【0019】図面では台座3に接合される端部51のウェ
ブの高さとフランジの幅を降伏部材8側から台座3側へ
かけて減少させ、端部51の降伏耐力も低下させている
が、降伏部材8の降伏耐力は端部51の降伏耐力より小さ
く設定される。
In the drawing, the height of the web and the width of the flange of the end portion 51 joined to the pedestal 3 are reduced from the yielding member 8 side to the pedestal 3 side, and the yield strength of the end portion 51 is also reduced. The yield strength of the yield member 8 is set smaller than the yield strength of the end portion 51.

【0020】[0020]

【発明の効果】ブレースの一部に、耐力が低下した降伏
部材を配置し、ブレースに着脱自在に接合するため、降
伏し、役目を終えた後の降伏部材のみの交換が可能にな
る。
According to the present invention, a yielding member having reduced strength is arranged in a part of the brace and is detachably joined to the brace, so that only the yielding member after yielding and completing its function can be replaced.

【0021】降伏部材はブレースが座屈する以前に引張
力で降伏し、降伏後の塑性変形能力により建物に入力す
る振動エネルギを集中的に吸収するため、ブレース本体
の耐力低下が回避され、ブレース本体が健全に保たれ
る。
The yielding member yields by a tensile force before the brace buckles, and intensively absorbs the vibration energy input to the building by the plastic deformation ability after the yielding, so that the strength of the brace main body is prevented from lowering and the brace main body is reduced. Is kept healthy.

【図面の簡単な説明】[Brief description of the drawings]

【図1】ブレースへの降伏部材の配置状態を示した立面
図である。
FIG. 1 is an elevation view showing an arrangement state of a yielding member on a brace.

【図2】図1の縦断面図である。FIG. 2 is a longitudinal sectional view of FIG.

【図3】建物にブレースを架設した様子を示した立面図
である。
FIG. 3 is an elevation view showing a state in which a brace is erected in a building.

【符号の説明】[Explanation of symbols]

1……柱、2……梁、21……貫通孔、3……台座、31…
…挿通孔、4……PC鋼材、5……ブレース、51……端
部、52……中間部、6……目地モルタル、7……ナッ
ト、8……降伏部材、81……降伏部、9……スプライス
プレート、10……ボルト。
1 ... pillar, 2 ... beam, 21 ... through-hole, 3 ... pedestal, 31 ...
... insertion hole, 4 ... PC steel, 5 ... brace, 51 ... end, 52 ... middle part, 6 ... joint mortar, 7 ... nut, 8 ... yielding member, 81 ... yielding part, 9 ... splice plate, 10 ... bolt.

フロントページの続き (58)調査した分野(Int.Cl.7,DB名) E04B 1/16 E04B 1/58 E04B 2/56 - 2/70 E04G 23/00 - 23/08 E04H 9/02 311 Continuation of the front page (58) Field surveyed (Int.Cl. 7 , DB name) E04B 1/16 E04B 1/58 E04B 2/56-2/70 E04G 23/00-23/08 E04H 9/02 311

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 柱・梁からなるフレームに、フレームの
構面外から台座をPC鋼材を用いて圧着接合し、台座間
にブレースを架設し、その端部を台座に接合した耐震補
強構造において、ブレースは台座に接合される端部と、
端部から分離する中間部からなり、端部と中間部との間
に相対的に断面積が減少して耐力が低下し、ブレースの
中間部が座屈する以前に引張降伏する降伏部材が配置さ
れ、端部と中間部に着脱自在に接合されており、ブレー
スの端部の降伏耐力は中間部の降伏耐力より小さく、且
つ降伏部材の降伏耐力はブレースの端部の降伏耐力より
小さい建物の耐震補強構造。
1. A seismic retrofit structure in which a pedestal is bonded to a frame made of columns and beams from outside the frame using a PC steel material, a brace is erected between the pedestals, and the ends are joined to the pedestal. The brace has an end joined to the pedestal,
A yield member is provided between the end portion and the intermediate portion, which has a reduced cross-sectional area and a reduced yield strength, and a tensile member yields before the middle portion of the brace buckles. , The yield strength of the end of the brace is smaller than the yield strength of the middle part, and the yield strength of the yielding member is smaller than the yield strength of the end of the brace. Reinforcement structure.
【請求項2】 ブレースと降伏部材は共にH形断面を
し、ブレースの端部のウェブの高さとフランジの幅は降
伏部材側から台座側へかけて減少している請求項1記載
の建物の耐震補強構造。
2. The building according to claim 1, wherein both the brace and the yielding member have an H-shaped cross section, and the height of the web at the end of the brace and the width of the flange decrease from the yielding member side to the pedestal side. Seismic reinforcement structure.
【請求項3】 ブレースの端部は台座にボルト接合され
ている請求項1、もしくは請求項2記載の建物の耐震補
強構造。
3. The structure according to claim 1, wherein the end of the brace is bolted to the pedestal.
JP09228212A 1997-08-25 1997-08-25 Building seismic reinforcement structure Expired - Fee Related JP3124515B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09228212A JP3124515B2 (en) 1997-08-25 1997-08-25 Building seismic reinforcement structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09228212A JP3124515B2 (en) 1997-08-25 1997-08-25 Building seismic reinforcement structure

Publications (2)

Publication Number Publication Date
JPH1161982A JPH1161982A (en) 1999-03-05
JP3124515B2 true JP3124515B2 (en) 2001-01-15

Family

ID=16872952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP09228212A Expired - Fee Related JP3124515B2 (en) 1997-08-25 1997-08-25 Building seismic reinforcement structure

Country Status (1)

Country Link
JP (1) JP3124515B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008121246A (en) * 2006-11-10 2008-05-29 Jr Soken Engineering:Kk Mounting method of vibration control reinforcing member

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010026720A (en) * 1999-09-08 2001-04-06 정란 K-shaped Steel Beam Bracing Apparatus and Method for Strenthening the Durability of the Reinforced Concrete Structure against Earthquake
JP5111920B2 (en) * 2007-03-30 2013-01-09 株式会社フジタ Seismic reinforcement structure for existing buildings
KR100983638B1 (en) 2009-12-29 2010-09-27 (주)에이엠에스 엔지니어링 Earthquake-proof stiffening device and its construction method in existed structures
KR101027393B1 (en) 2010-04-19 2011-04-05 (주)목양엔지니어링건축사사무소 Longitudinal and/or transverse seismic reinforcing method for masonry walls
CN104631644B (en) * 2015-01-09 2017-05-10 上海大学 Connection node structure
CN107905385A (en) * 2017-11-27 2018-04-13 黄昆 The assembled arthitecutral structure and method of construction that steel construction is combined with concrete structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008121246A (en) * 2006-11-10 2008-05-29 Jr Soken Engineering:Kk Mounting method of vibration control reinforcing member

Also Published As

Publication number Publication date
JPH1161982A (en) 1999-03-05

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