JP2000087503A - Erection structure of steel frame beam - Google Patents

Erection structure of steel frame beam

Info

Publication number
JP2000087503A
JP2000087503A JP10254442A JP25444298A JP2000087503A JP 2000087503 A JP2000087503 A JP 2000087503A JP 10254442 A JP10254442 A JP 10254442A JP 25444298 A JP25444298 A JP 25444298A JP 2000087503 A JP2000087503 A JP 2000087503A
Authority
JP
Japan
Prior art keywords
base plate
steel beam
steel frame
frame beam
members
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
Application number
JP10254442A
Other languages
Japanese (ja)
Other versions
JP3928147B2 (en
Inventor
Hideo Nakajima
秀雄 中島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimizu Construction Co Ltd
Shimizu Corp
Original Assignee
Shimizu Construction Co Ltd
Shimizu Corp
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 Shimizu Construction Co Ltd, Shimizu Corp filed Critical Shimizu Construction Co Ltd
Priority to JP25444298A priority Critical patent/JP3928147B2/en
Publication of JP2000087503A publication Critical patent/JP2000087503A/en
Application granted granted Critical
Publication of JP3928147B2 publication Critical patent/JP3928147B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To impart a function as a damper to a steel frame beam itself. SOLUTION: In case of a structure adapted for constructing a steel frame beam 2 between two members 1, 1, the steel frame beam is constructed so that base plates 4 are provided at both ends of a main member 3, and the peripheral edges of the base plates 4 are fastened to the members to allow an out-of-plane bending deformation of the base plate 4 and its yield when the steel frame beam 2 is subjected to a specified load. A clearance 6 to allow a bending deformation of the base plate 4 is secured between the base plate 4 and the member to be constructed. The base plate 4 is fastened in such a way as it is put in a pair of holding members 7 from both face sides and the contact face of the holding member 7 with the base plate 4 is formed to have a convex face.

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】本発明は鉄骨梁の架設構造、
特に、鉄骨梁自体を制振ダンパーとして機能せしめて振
動減衰効果を得ることを可能とした構造に関する。
TECHNICAL FIELD The present invention relates to a steel beam erection structure,
In particular, the present invention relates to a structure in which a steel beam itself can function as a vibration damper to obtain a vibration damping effect.

【0002】[0002]

【従来の技術】近年、建物の耐震性を向上させるため
に、地震エネルギーを吸収して振動を抑制し速やかに減
衰させる各種の制振ダンパーを建物に設置することが行
われるようになってきている。
2. Description of the Related Art In recent years, in order to improve the seismic resistance of buildings, various types of vibration dampers for absorbing seismic energy to suppress vibrations and attenuate them quickly have been installed in buildings. I have.

【0003】[0003]

【発明が解決しようとする課題】建物に設置する制振ダ
ンパーとしては、オイルダンパー、粘弾性ダンパー、鋼
材ダンパー等が一般的であるが、それらはいずれも安価
なものではないし、それらを設置するためにかなりのス
ペースを確保しなければならず、また保守も必要であ
る。
Oil dampers, viscoelastic dampers, steel dampers, and the like are generally used as vibration dampers installed in buildings, but none of them are inexpensive, and they are installed. This requires considerable space and requires maintenance.

【0004】上記事情に鑑み、本発明は、格別の制振ダ
ンパーを用いることなく、鉄骨梁自体に制振ダンパーと
しての機能をもたせることのできる構造を提供するもの
である。
In view of the above circumstances, the present invention provides a structure in which a steel beam itself can have a function as a vibration damper without using a special vibration damper.

【0005】[0005]

【課題を解決するための手段】本発明は、二部材間に鉄
骨梁を架設する際に適用する構造であって、前記鉄骨梁
を主材の両端にベースプレートを設けた構成として、該
ベースプレートの周縁部を前記部材に対して締結し、当
該鉄骨梁が所定荷重を受けた際に前記ベースプレートの
面外曲げ変形を許容して該ベースプレートを降伏せしめ
る構成としたものである。前記ベースプレートと架設対
象の部材との間に、該ベースプレートの曲げ変形を許容
するためのクリアランスを確保することが好適である。
また、前記ベースプレートをその両面側から対の挟持部
材により挟み込んだ状態で締結するとともに、該挟持部
材の前記ベースプレートに対する当接面を凸曲面に形成
することが好適である。
SUMMARY OF THE INVENTION The present invention relates to a structure applied when a steel beam is erected between two members, wherein the steel beam is provided with base plates at both ends of a main material, and A peripheral portion is fastened to the member, and when the steel beam is subjected to a predetermined load, out-of-plane bending deformation of the base plate is allowed to yield the base plate. It is preferable to secure a clearance between the base plate and the member to be erected to allow bending deformation of the base plate.
Further, it is preferable that the base plate is fastened in a state where the base plate is sandwiched from both sides by a pair of sandwiching members, and a contact surface of the sandwiching member with the base plate is formed as a convex curved surface.

【0006】[0006]

【発明の実施の形態】図1ないし図3は本発明の一実施
形態を示すものである。本実施形態は、柱あるいは壁等
の対向する二部材1,1間に鉄骨梁2を架設する際に適
用されるものであり、その鉄骨梁2としては通常のH形
鋼等からなる主材3の両端にそれぞれ鋼板からなる平板
状のベースプレート4,4を溶接して取り付けられたも
のを用いる。
FIG. 1 to FIG. 3 show an embodiment of the present invention. The present embodiment is applied when a steel beam 2 is erected between two opposed members 1 and 1 such as columns or walls, and the steel beam 2 is a main material made of a normal H-section steel or the like. A base plate 4 made of a steel plate is attached to both ends of the base plate 3 by welding.

【0007】上記の鉄骨梁2の部材1,1間に対する架
設は、各ベースプレート4の上下の周縁部をアンカーボ
ルト5により部材1に対して締結することで行う。その
際、ベースプレート4を部材1表面よりやや浮かせた状
態としてベースプレート4と部材1との間に若干のクリ
アランス6を確保する。さらに、部材1に対するベース
プレート4の締結は、図2に示すように、対の挟持部材
7,7によりベースプレート4を両面側から挟み込んだ
状態で行い、それら挟持部材7のベースプレート4に対
する当接面は凸曲面7aとしておく。
The installation of the steel beam 2 between the members 1 and 1 is performed by fastening the upper and lower peripheral edges of each base plate 4 to the member 1 with anchor bolts 5. At this time, a slight clearance 6 is secured between the base plate 4 and the member 1 while the base plate 4 is slightly lifted from the surface of the member 1. Further, as shown in FIG. 2, the base plate 4 is fastened to the member 1 in a state where the base plate 4 is sandwiched from both sides by a pair of sandwiching members 7, 7, and the contact surfaces of the sandwiching members 7 with the base plate 4 are formed. A convex curved surface 7a is provided.

【0008】上記構造により架設された鉄骨梁2にあっ
ては、所定の設定荷重を越える荷重が作用した際、特に
地震時に水平力が加わって建物に層間変位が生じたよう
な場合、図3に示すようにベースプレート4が面外方向
に曲げ変形を生じて降伏するものであり、そのような降
伏が主材3に先立って生じるようにベースプレート4の
厚さ、寸法、部材1に対する締結位置が設定されてい
る。
In the case of the steel beam 2 erected by the above structure, when a load exceeding a predetermined set load is applied, particularly when a horizontal force is applied during an earthquake and the building is displaced between layers, FIG. As shown in FIG. 2, the base plate 4 yields due to bending deformation in the out-of-plane direction, and the thickness, size, and fastening position of the base plate 4 to the member 1 are set such that such yielding occurs prior to the main member 3. Is set.

【0009】そして、上記の鉄骨梁2は、ベースプレー
ト4が上記のような塑性変形することで地震エネルギー
を吸収し、建物の振動を速やかに減衰させ得るものであ
る。つまり、この鉄骨梁2自体が一種の鋼材ダンパーと
して機能するものであり、他に制振ダンパーを設けずと
も振動減衰効果を得ることができることになる。
The above-mentioned steel beam 2 absorbs seismic energy by the plastic deformation of the base plate 4 as described above, and can rapidly attenuate the vibration of the building. That is, the steel beam 2 itself functions as a kind of steel damper, and the vibration damping effect can be obtained without providing any other vibration damper.

【0010】特に、上記の鉄骨梁2にあっては、ベース
プレート4の周縁部のみが部材1に対して締結されてい
ること、ベースプレート4と部材1との間にクリアラン
ス6が確保されていること、ベースプレート4を挟持し
ている挟持部材7の当接面7aが凸曲面とされているこ
とにより、ベースプレート4の面外方向への曲げ変形が
支障なく許容されるものであり、したがって制振ダンパ
ーとして確実に機能し得るものとなっている。しかも、
ベースプレート4を形成している鋼板は面外曲げ変形を
受けた際の塑性変形能力が大きいものであるから、この
鉄骨梁2は大きなエネルギー吸収性能を期待できるもの
であって制振ダンパーとしてきわめて有効なものであ
る。
In particular, in the above-mentioned steel beam 2, only the peripheral portion of the base plate 4 is fastened to the member 1, and the clearance 6 is secured between the base plate 4 and the member 1. Since the abutment surface 7a of the holding member 7 holding the base plate 4 is formed as a convex curved surface, the base plate 4 can be flexibly deformed in an out-of-plane direction without any trouble. Can function reliably. Moreover,
Since the steel plate forming the base plate 4 has a large plastic deformation capacity when subjected to out-of-plane bending deformation, the steel beam 2 can be expected to have a large energy absorption performance and is extremely effective as a vibration damper. It is something.

【0011】なお、上記実施形態では、主として層間変
位を受けた際にベースプレート4が上下方向に曲げ変形
を生じるようにベースプレート4の上下の周縁部のみを
部材1に対して締結するようにしたのであり、通常はそ
のようにすることが好ましいが、鉄骨梁2に作用する荷
重の方向によってはベースプレート4の左右の周縁部を
締結する方が好ましい場合も想定され(たとえば鉄骨梁
2の両端部が互いに水平逆方向に変位することが想定さ
れるような場合)、その場合にはそのように構成すれば
良い。あるいは、可能であればベースプレート4の四隅
部のみを締結することでベースプレート4の上下左右の
双方に対する曲げ変形を許容せしめる構成とすることも
考えられる。
In the above embodiment, only the upper and lower peripheral portions of the base plate 4 are fastened to the member 1 so that the base plate 4 bends in the vertical direction when mainly subjected to interlayer displacement. Yes, it is usually preferable to do so. However, depending on the direction of the load acting on the steel beam 2, it may be preferable to fasten the left and right peripheral portions of the base plate 4 (for example, if both ends of the steel beam 2 In a case where displacements are assumed to be horizontally opposite to each other), in such a case, such a configuration may be adopted. Alternatively, if possible, it is also conceivable to adopt a configuration in which only the four corners of the base plate 4 are fastened to allow bending deformation of the base plate 4 both vertically and horizontally.

【0012】[0012]

【発明の効果】以上のように、本発明は、二部材間に鉄
骨梁を架設する際に、鉄骨梁を主材の両端にベースプレ
ートを設けた構成として、そのベースプレートの周縁部
を架設対象の部材に対して締結し、当該鉄骨梁が所定荷
重を受けた際にベースプレートの面外曲げ変形を許容し
てそれを降伏せしめる構成としたから、この鉄骨梁自体
が一種の鋼材ダンパーとして機能してベースプレートの
塑性変形により地震エネルギーを吸収して建物の振動を
抑制しかつ速やかに減衰させ得るものであり、しかも優
れたエネルギー吸収性能を期待できるものであり、した
がって他に制振ダンパーを設けずとも振動減衰効果を得
ることができ、その結果、従来のように各種の制振ダン
パーを別個に設ける場合に比較すると大幅なコスト削減
を図ることができるとともに、設置スペースを必要とせ
ず、保守も不要であり、きわめて有効である。
As described above, according to the present invention, when a steel beam is erected between two members, the steel beam is provided with base plates at both ends of the main member, and the peripheral edge of the base plate is used as an object to be erected. Fastened to the member, and when the steel beam is subjected to a predetermined load, the base plate allows out-of-plane bending deformation and yields it, so this steel beam itself functions as a kind of steel damper It absorbs seismic energy by plastic deformation of the base plate and suppresses the vibration of the building and can attenuate it quickly, and it can be expected to have excellent energy absorption performance.Therefore, it can be installed without additional damping dampers. Vibration damping effect can be obtained, and as a result, significant cost reduction can be achieved as compared with the case where various vibration dampers are separately provided as in the past. With, without the need for installation space, maintenance is also unnecessary, it is extremely effective.

【0013】また、ベースプレートと架設対象の部材と
の間にクリアランスを確保し、さらに、ベースプレート
をその両面側から対の挟持部材により挟み込んだ状態で
締結するとともにその挟持部材のベースプレートに対す
る当接面を凸曲面に形成すれば、ベースプレートの曲げ
変形を確実に許容せしめて制振ダンパーとしての機能を
確実に発揮させることができる。
Further, a clearance is secured between the base plate and the member to be erected, and the base plate is fastened in a state where the base plate is sandwiched from both sides by a pair of sandwiching members, and a contact surface of the sandwiching member with the base plate is formed. If the base plate is formed to have a convex curved surface, it is possible to reliably allow the base plate to bend and deform, and to reliably exert the function as a vibration damper.

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

【図1】 本発明の実施形態を示す側面図である。FIG. 1 is a side view showing an embodiment of the present invention.

【図2】 同、ベースプレートの部材に対する締結部の
拡大図である。
FIG. 2 is an enlarged view of a fastening portion with respect to a member of a base plate.

【図3】 同、ベースプレートが曲げ変形した状態を示
す図である。
FIG. 3 is a view showing a state in which the base plate is bent and deformed.

【符号の説明】[Explanation of symbols]

1 部材 2 鉄骨梁 3 主材 4 ベースプレート 5 アンカーボルト 6 クリアランス 7 挟持部材 7a 凸曲面 Reference Signs List 1 member 2 steel beam 3 main material 4 base plate 5 anchor bolt 6 clearance 7 holding member 7a convex curved surface

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 二部材間に鉄骨梁を架設する際に適用す
る構造であって、前記鉄骨梁を主材の両端にベースプレ
ートを設けた構成として、該ベースプレートの周縁部を
前記部材に対して締結し、当該鉄骨梁が所定荷重を受け
た際に前記ベースプレートの面外曲げ変形を許容して該
ベースプレートを降伏せしめる構成としたことを特徴と
する鉄骨梁の架設構造。
1. A structure applied when a steel beam is erected between two members, wherein the steel beam is provided with base plates at both ends of a main material, and a peripheral edge of the base plate is attached to the member. A steel beam erection structure, wherein the base plate is yielded by allowing the base plate to undergo out-of-plane bending deformation when the steel beam receives a predetermined load.
【請求項2】 前記ベースプレートと架設対象の部材と
の間に、該ベースプレートの曲げ変形を許容するための
クリアランスを確保してなることを特徴とする請求項1
記載の鉄骨梁の架設構造。
2. A clearance between the base plate and a member to be installed is secured to allow bending deformation of the base plate.
The erection structure of the described steel beam.
【請求項3】 前記ベースプレートをその両面側から対
の挟持部材により挟み込んだ状態で締結するとともに、
該挟持部材の前記ベースプレートに対する当接面を凸曲
面に形成してなることを特徴とする請求項2記載の鉄骨
梁の架設構造。
3. Fastening the base plate while sandwiching the base plate from both sides thereof with a pair of holding members,
3. The steel beam erection structure according to claim 2, wherein a contact surface of the holding member with respect to the base plate is formed as a convex curved surface.
JP25444298A 1998-09-08 1998-09-08 Steel beam construction Expired - Lifetime JP3928147B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25444298A JP3928147B2 (en) 1998-09-08 1998-09-08 Steel beam construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25444298A JP3928147B2 (en) 1998-09-08 1998-09-08 Steel beam construction

Publications (2)

Publication Number Publication Date
JP2000087503A true JP2000087503A (en) 2000-03-28
JP3928147B2 JP3928147B2 (en) 2007-06-13

Family

ID=17265070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25444298A Expired - Lifetime JP3928147B2 (en) 1998-09-08 1998-09-08 Steel beam construction

Country Status (1)

Country Link
JP (1) JP3928147B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852244A (en) * 2012-04-27 2013-01-02 中国矿业大学 Detachable self-resetting type energy-dissipation coupling beam and construction process thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852244A (en) * 2012-04-27 2013-01-02 中国矿业大学 Detachable self-resetting type energy-dissipation coupling beam and construction process thereof

Also Published As

Publication number Publication date
JP3928147B2 (en) 2007-06-13

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