JP3764002B2

JP3764002B2 - Dynamic vibration absorber mounting structure

Info

Publication number: JP3764002B2
Application number: JP22215099A
Authority: JP
Inventors: 豊彦東田; 宗男小谷
Original assignee: Sekisui House Ltd
Current assignee: Sekisui House Ltd
Priority date: 1999-08-05
Filing date: 1999-08-05
Publication date: 2006-04-05
Anticipated expiration: 2019-08-05
Also published as: JP2001049898A

Description

【０００１】
【発明の属する技術分野】
本発明は、重量鉄骨Ｈ型鋼により鉄骨躯体を構成した三階建てなどの住宅に、動吸振器を取り付けるための構造に関する。
【０００２】
【従来の技術】
従来は、市街地においては、建築基準法等の規制により、三階建て住宅を建設することが制限されていたのである。しかし、近年の規制緩和により、三階建て住宅の建設が認められるようになり、従来の二階建て住宅とは、違った設計方式と設計理念の住宅が求められるようになったのである。
また、人口の密集化および地価の高騰等により、市街地に２世代３世代住宅を目的とした三階建て住宅が建設される傾向がある。人口の密集化は、建設作業の増加、工場および事業所周辺の宅地化、交通量の増加を招き、振動公害が問題視されてきており、それらは主に、建設作業、工場、事業所、道路交通を発生源とするものである。これらの振動が建物に伝達され建物内の住人に違和感を与える場合がある。
構造物に加わる振動を低減する方法としては、特開平９−１３７４０号公報に示すごとく、基礎と構造物の間に減衰装置を配するものや、特開平１０−８２２０８号公報に示すごとく、建物の屋上に振動制御を配置するものも知られている。
そして、上記のように立地条件に左右されず、２世代３世代の住人が快適に生活を行える住宅が望まれている。
【０００３】
【発明が解決しようとする課題】
従来から、ラーメン工法の鉄骨構造躯体を用いた三階建て住宅は周知とされているのであるが、これらは、マンションや集合住宅等のような、多数の家族が居住するような建物に関するものであり、一戸建ての三階建て住宅の場合には、それに見合ったコストと構造の三階建て住宅の設計と、プランニングが必要となってくるのである。
前述の特開平９−１３７４０号公報に示す技術では、十分な振動除去を行うのが困難であり、地震による建物への負荷を軽減できても、交通振動などの振動公害に適応するのは困難である。
さらに、特開平１０−８２２０８号公報に示す技術では、ビルなどの質量の大きな建物の振動制御を行うものであり、ビルよりはるかに質量の小さい住宅に発生する交通振動等の微振動を対象とはしていない。
上記のように、従来の技術では立地条件に左右されず、自由な居住空間の設計ができ、住人が快適に生活を行える住宅を建設するのは困難である。
【０００４】
住宅においては、住宅用動吸振器を配設することにより、交通振動などの振動面において快適な住環境を確保することができる。
このためには、躯体の振動を確実に動吸振器に伝達するために、動吸振器を住宅に強固に取り付ける必要がある。
また、住宅に動吸振器を取り付ける際に、構成を大幅に変更すると施工費が高くなる。住宅の基本的な構成を維持するとともに動吸振器を配設することが望まれる。
【０００５】
【課題を解決するための手段】
本発明が解決しようとする課題は以上の如くであり、次に該課題を解決するための構成を説明する。
【０００６】
請求項１においては、重量鉄骨Ｈ型鋼により鉄骨躯体を構成し、基礎２５上に１階の柱１２を立設し、該１階の柱１２上には１階の通し梁１ａを固設し、１階の通し梁１ａの上に２階の分断柱１５を立設し、２階の分断柱１５の上端に２階の通し梁１ｂを横設し、２階の通し梁１ｂ上には３階の分断柱１６が立設されており、３階の分断柱１６の上端には３階の通し梁１ｃを横設し、１階・２階・３階の通し梁１ａ・１ｂ・１ｃを主体として、一階柱１２と二階柱１５と三階柱１６を分断した柱とし、上方階へ行くに連れて、分断柱の数を少なくした梁勝ち三階建てラーメン構造住宅において、屋上の小屋面を、前記３階の通し梁１ｃ、及び該３階の通し梁１ｃに接続した小梁４２・・・により構成し、該小梁４２・４２間に２本の梁３２・３２を架設し、該梁３２・３２の間に、２本の梁３５・３５を架設し、該４本の梁３２・３２・３５・３５の間に動吸振器２６を配設し、該動吸振器２６の周りの梁４２・３５・３２により囲まれる部分に、水平ブレース１を配設し、動吸振器２６は梁で囲まれると共に、水平ブレース４１により囲まれる構成としたものである。
【０００７】
請求項２においては、重量鉄骨Ｈ型鋼により鉄骨躯体を構成し、基礎２５上に１階の柱１２を立設し、該１階の柱１２上には１階の通し梁１ａを固設し、１階の通し梁１ａの上に２階の分断柱１５を立設し、２階の分断柱１５の上端に２階の通し梁１ｂを横設し、２階の通し梁１ｂ上には３階の分断柱１６が立設されており、３階の分断柱１６の上端には３階の通し梁１ｃを横設し、１階・２階・３階の通し梁１ａ・１ｂ・１ｃを主体として、一階柱１２と二階柱１５と三階柱１６を分断した柱とし、上方階へ行くに連れて、分断柱の数を少なくした梁勝ち三階建てラーメン構造住宅において、屋上の小屋面を、前記３階の通し梁１ｃ、及び該３階の通し梁１ｃに接続した小梁４２・・・により構成し、該小梁４２・４２間に２本の梁３２・３２を架設し、該２本の梁３２・３２の間に１本の梁３５を架設し、該１本の小梁４２と梁３２・３２・３５の間に動吸振器２６を配設し、該動吸振器２６の周りの梁４２・３５・３２により囲まれる部分に、水平ブレース１を配設し、動吸振器２６は梁で囲まれると共に、水平ブレース４１により囲まれる構成としたものである。
【０００８】
請求項３においては、請求項１又は請求項２記載の動吸振器の取付構造において、該水平ブレース４１の一部を、動吸振器２６に直接接続したものである。
【０００９】
【発明の実施の形態】
次に本発明の実施の形態を説明する。
図１は三階建て住宅の構成を示す俯瞰図、図２は本発明に用いる住宅の通し梁１ａと、一階柱１２と二階柱１５の部分の柱・梁接合部を構造を示す斜視図、図３は住宅の振動の受け止め方を示した模式図、図４は動吸振器の作動構成を示す模式図、図５は動吸振器の制振機構を示す模式図、図６は躯体への動吸振器取り付けの一例を示す斜視図、図７は同じく平面図、図８は動吸振器の固設構成の他の例を示す斜視図、図９は躯体への動吸振器取り付けの他の例を示す斜視図、図１０は同じく平面図、図１１は動吸振器の固設構成の他の例を示す斜視図、図１２は動吸振器にブレースを接続する他の例を示す斜視図である。
【００１０】
図１と図２において、三階建て住宅のラーメン工法について説明する。
動吸振器が配設される三階建て住宅のラーメン工法は、図１において、その要部が図示されているように、通し柱および梁により構成されるものではなく、通し梁１ａ・１ｂ・１ｃおよび該通し梁１ａ・１ｂ・１ｃに接続される柱により構成されるものである。
【００１１】
通し柱を有する柱勝ちではなく、通し梁１ａ・１ｂ・１ｃを有する梁勝ちの構成として、一階柱１２と二階柱１５と三階柱１６は、分断された柱であり、図２のごとく、通し梁１ａの上下に接合される構造であるので、一階柱１２の上に、二階柱１５があり、二階柱１５の上に三階柱１６がある必要がなくなり、各階で必要な柱本数をバランス良く自由に配設できるため、上方階へ行くに連れて、分断柱の数を少なくすることが出来るのである。
図２においては、本発明に用いられる住宅のラーメン工法における梁・柱接合部が図示されており、トルシア型のハイテンションボルトにより、通し梁１ａと一階柱１２と二階柱１５等を連結する構造として、耐震性を向上させているのである。
【００１２】
次に、本発明に用いる住宅の耐振動構成について、図３を用いて説明する。
バランスの悪い住宅２１ｂにおいては、振動を受けた場合には、建物にねじれが生じやすい。この場合に発生する振動にはねじれの要素が加わるため、振動の成分が多くなるとともに、時間的な変化が複雑であり、振動を抑制することが困難である。また、住宅にかかる負荷が大きい。
梁勝ち構造の住宅２１では、水平方向に配設された梁に必要な数の柱をバランス良く配設でき、水平方向に対するバランスおよび剛性が高く、振動を水平に受け止めることができる。
これにより、住宅の受ける振動を単純化でき、該振動を容易に抑制することができる。また、住宅の受ける負荷を軽減でき、住宅の耐久性を向上できる。
【００１３】
次に、動吸振器による住宅の振動抑制の機構について説明する。
住宅の上部には、図４に示すごとく、動吸振器２６が配設されており、該動吸振器２６により振動源より地盤を介して住宅に伝達される振動が解消されるものである。
図４（ａ）に示す状態の住宅が、図４（ｂ）に示すごとく、住宅に振動が伝達されると、図４（ｃ）に示すごとく、住宅が揺れ始める。該住宅が揺れることにより、動吸振器に揺れが伝達され、図４（ｄ）に示すごとく、動吸振器が伝達された揺れを利用した慣性力を住宅に与えるため、図４（ｅ）に示すごとく、住宅の揺れを解消できるのである。
【００１４】
次に動吸振器の構成について説明する。
動吸振器は、一般的に弾性部材Ｓ、減衰部材Ｄおよび質量体Ｍにより構成されており、該弾性部材Ｓ、減衰部材Ｄおよび質量体Ｍが動吸振器のフレームに接続され、該フレームにより動吸振器が住宅に固設されるものである。
また、弾性部材Ｓ、減衰部材Ｄおよび質量体Ｍの結合方法は、図５（ａ）に示すごとく、弾性部材Ｓ、減衰部材Ｄおよび質量体Ｍを直線的に接続することも可能である。また、図５（ｂ）に示すごとく、弾性部材Ｓと減衰部材Ｄを並列に接続して、質量体Ｍに接続する方法などがある。
一般に、質量体Ｍの質量は住宅の約１パーセントとされている。
また、図５（ｃ）に示すごとく、１方向の振動を吸収する動吸振器を２つ配設し、前後左右方向の振動を吸収させることも可能である。
もしくは、１つの質量体Ｍに前後左右方向にそれぞれ一対の弾性部材Ｓおよび減衰部材Ｄを接続し、１つの動吸振器により、前後左右方向の振動を吸収することもできる。
本発明は、動吸振器を特に特定するものではなく、住宅に配置可能であって、振動を吸収できるものであれば良い。特に、１つの質量体に前後左右方向に作用する一対の弾性部材Ｓおよび減衰部材Ｄを接続したものを用いることにより、動吸振器の配置スペースを小さくでき、設置が容易になる。
【００１５】
前述のごとく、動吸振器は、一般的に弾性部材、減衰部材および質量体により構成されるため、一定の周波数特性を有する。周波数特性は、質量体が変位しやすい周波数であり、弾性部材および減衰部材の特性（弾性係数、摩擦係数もしく粘性）を変化させることにより、調節できるものである。
また、減衰部材により、振動を熱エネルギーに変換して、振動の低減を行うため、該減衰部材が作動するための、ある程度のストロークを必要とするものである。また、質量体に発生する慣性力によって、振動を打ち消すためにもある程度のストロークが必要となる。
このため、動吸振器により吸収を行う振動は、ある程度周期の大きいものとなる。振動公害の対象範囲は、一般に１〜８０Ｈｚのものとされている。動吸振器はこの範囲の周波数において、特に、住人が感じやすい２〜５Ｈｚの周波数に対応するものであれば良い。この範囲において、住宅の揺れが動吸振器により低減されるものである。
【００１６】
次に、動吸振器の配設構成について説明する。
動吸振器は、前述のごとく、住宅に伝達された振動を低減させるために、住宅の上部に配設されるものである。また、振動を効率的に吸収するためには、動吸振器の取り付け剛性を高くする必要がある。動吸振器の躯体への取り付け剛性が低い場合には、動吸振器の接続部における制振時の変形により、遊びが生じ動吸振器に住宅の振動が伝達されにくくなる。同様に、動吸振器による振動に対する抗力も住宅に伝達されにくくなることが考えられる。
このため、動吸振器を住宅に取り付ける際には、動吸振器の取り付け剛性を高くし、動吸振器への振動の伝達および、動吸振器の振動に対する抗力を住宅に効率的に伝達する必要がある。
以下において、動吸振器を小屋面に配設する実施例について説明するが、該動吸振器を同様に屋根面もしくは床面の梁に配設することもできる。
【００１７】
動吸振器の取り付け構成の第一実施例について、図６乃至図８を用いて説明する。
図６において、小屋面は梁１ｃおよび該梁１ｃに接続した小梁４２により構成されている。小梁４２間に梁が架設され、該梁間に動吸振器２６が配設されるものである。動吸振器２６は、図７に示すごとく、躯体上部に配設される梁に四方を囲まれている。前記動吸振器２６は、梁１ｃに接続した梁４２・４２間に配設されており、該梁４２・４２間に架設された梁３２・３２および梁３５・３５に固設されている。
また、前記梁３５・３５は梁３２・３２間に配設されて該梁３２・３２に接続されている。動吸振器２６の基礎部２６ｂが梁３５・３２に接続される構成となっている。また、該動吸振器２６の周りの梁４２・３５・３２により囲まれる部分および梁４２・３２により囲まれる部分には水平ブレース１が配設されている。すなわち、動吸振器２６は梁で囲まれるとともに、水平ブレースにより囲まれる構成になっている。これにより、動吸振器２６の梁に対する取り付け剛性を高くすることができるとともに、動吸振器２６の前後左右方向において剛性のバランスを良くし、動吸振器２６の均一な取り付け剛性を実現できる。
また、水平ブレース４１が動吸振器２６が配設される小屋面の梁間に配設されるため、小屋面の面剛性を向上できる。小屋面の面剛性が向上することにより、振動による梁の変形を抑制でき、動吸振器２６の吸振力を躯体に確実に伝達し、制振効果を向上できる。動吸振器が配設される小屋面全体に水平ブレース４１を配設するため、小屋面における剛性が均一化され、剛性のバランスがよくなる。これにより、動吸振器２６の制振効率を向上できる。
【００１８】
上記のごとく、動吸振器を梁により取り囲み、該梁に動吸振器を配設するとともに、動吸振器を取り囲む梁に水平ブレースを接続するので、動吸振器の取り付け剛性を容易に向上できるとともに、該動吸振器が含めれる面内の剛性のバランスを向上できる。これにより、駆体の振動による変形を抑制し、動吸振器の吸振力を確実に住宅に伝達することができる。
【００１９】
次に、動吸振器２６の取り付け構成の第二実施例について、図９乃至図１１において説明する。
図９および図１０に示すごとく、梁１ｃおよび梁４２により構成される小屋面において、動吸振器２６は梁３２・３２および梁４２により支持されている。動吸振器２６の前後左右にはそれぞれ梁３２・３２および梁４２、水平ブレース４１が接続されている。
本実施例においては、動吸振器２６の三方を梁３２・３２・４２により取り囲むとともに、一方に水平ブレース４１を配設し、動吸振器２６の取り付け剛性を向上させるものである。
また、動吸振器２６は、図１１に示すごとく、梁３２・３２間に配設された梁３５上に固設されており、水平ブレース４１は動吸振器２６に直接接続されている。動吸振器２６は梁３５上に固設されるとともに、側方に水平ブレース４１および梁３２・３２・４２を配設するので、動吸振器２６の配置上の自由度を向上させることができる。
また、動吸振器２６が梁３５上に配設された場合においても、側面方向に水平ブレース４１が配設されるため、水平方向の取り付け剛性を容易に向上されることができる。動吸振器２６の側部に直接、水平方向の剛性を向上させるブレースを接続するので、振動が伝達さえれる際の遊びを低減でき、確実な制振を行うことができる。
【００２０】
また、図１２に示すごとく、梁３２・３２間に配設された梁３５上に動吸振器２６を固設し、該動吸振器２６に水平ブレース４１・４１を接続することも可能である。これにより、動吸振器２６の梁への配設を容易に行えるとともに、水平ブレースにより動吸振器２６の水平方向の取り付け剛性を向上できる。
【００２１】
【発明の効果】
請求項１の如く、重量鉄骨Ｈ型鋼により鉄骨躯体を構成し、基礎２５上に１階の柱１２を立設し、該１階の柱１２上には１階の通し梁１ａを固設し、１階の通し梁１ａの上に２階の分断柱１５を立設し、２階の分断柱１５の上端に２階の通し梁１ｂを横設し、２階の通し梁１ｂ上には３階の分断柱１６が立設されており、３階の分断柱１６の上端には３階の通し梁１ｃを横設し、１階・２階・３階の通し梁１ａ・１ｂ・１ｃを主体として、一階柱１２と二階柱１５と三階柱１６を分断した柱とし、上方階へ行くに連れて、分断柱の数を少なくした梁勝ち三階建てラーメン構造住宅において、屋上の小屋面を、前記３階の通し梁１ｃ、及び該３階の通し梁１ｃに接続した小梁４２・・・により構成し、該小梁４２・４２間に２本の梁３２・３２を架設し、該梁３２・３２の間に、２本の梁３５・３５を架設し、該４本の梁３２・３２・３５・３５の間に動吸振器２６を配設し、該動吸振器２６の周りの梁４２・３５・３２により囲まれる部分に、水平ブレース１を配設し、動吸振器２６は梁で囲まれると共に、水平ブレース４１により囲まれる構成としたので、動吸振器の配設される面の剛性が向上されるとともに、均一化される。これにより、動吸振器周りにおける梁の変形を抑制し、該動吸振器による制振効果を向上できる。
【００２２】
また、動吸振器の取り付け剛性を梁により容易に確保可能であり、ブレースにより小屋面、屋根面もしくは床面の面剛性を向上させるので、動吸振器による制振効果を向上できる。
【００２３】
請求項２に記載のごとく、重量鉄骨Ｈ型鋼により鉄骨躯体を構成し、基礎２５上に１階の柱１２を立設し、該１階の柱１２上には１階の通し梁１ａを固設し、１階の通し梁１ａの上に２階の分断柱１５を立設し、２階の分断柱１５の上端に２階の通し梁１ｂを横設し、２階の通し梁１ｂ上には３階の分断柱１６が立設されており、３階の分断柱１６の上端には３階の通し梁１ｃを横設し、１階・２階・３階の通し梁１ａ・１ｂ・１ｃを主体として、一階柱１２と二階柱１５と三階柱１６を分断した柱とし、上方階へ行くに連れて、分断柱の数を少なくした梁勝ち三階建てラーメン構造住宅において、屋上の小屋面を、前記３階の通し梁１ｃ、及び該３階の通し梁１ｃに接続した小梁４２・・・により構成し、該小梁４２・４２間に２本の梁３２・３２を架設し、該２本の梁３２・３２の間に１本の梁３５を架設し、該１本の小梁４２と梁３２・３２・３５の間に動吸振器２６を配設し、該動吸振器２６の周りの梁４２・３５・３２により囲まれる部分に、水平ブレース１を配設し、動吸振器２６は梁で囲まれると共に、水平ブレース４１により囲まれる構成としたので、動吸振器の水平方向の取り付け剛性を梁により容易に確保可能であり、ブレースにより小屋面、屋根面もしくは床面の面剛性を向上させ、均一化できる。動吸振器による制振効果を向上できる。
【００２４】
請求項３に記載のごとく、該動吸振器２６に直接ブレース４１を接続するので、動吸振器の配置上の自由度を向上させることができる。
また、動吸振器が梁上に配設された場合においても、側面方向にブレースが配設されるため、水平方向の取り付け剛性を容易に向上されることができる。動吸振器の側部に直接、水平方向の剛性を向上させるブレース４１を接続するので、振動が伝達さえれる際のフリクションロスを低減でき、確実な制振を行うことができる。
【図面の簡単な説明】
【図１】三階建て住宅のラーメン工法を示す俯瞰図。
【図２】通し梁１ａと、一階柱１２と二階柱１５の部分の柱・梁接合部を構造を示す斜視図。
【図３】住宅の振動の受け止め方を示した模式図。
【図４】動吸振器の作動構成を示す模式図。
【図５】動吸振器の構成を示す模式図。
【図６】躯体への動吸振器取り付けの一例を示す斜視図。
【図７】同じく平面図。
【図８】動吸振器の固設構成の他の例を示す斜視図。
【図９】躯体への動吸振器取り付けの他の例を示す斜視図。
【図１０】同じく平面図。
【図１１】動吸振器の固設構成の他の例を示す斜視図。
【図１２】動吸振器にブレースを接続する他の例を示す斜視図。
【符号の説明】
１ａ・１ｂ・１ｃ通し梁
１２・１５・１６柱
２６動吸振器
２６ｂフレーム
３２・３５梁
４１ブレース
４２小梁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for attaching a dynamic vibration absorber to a three-story house in which a steel frame is constructed of heavy steel H-shaped steel.
[0002]
[Prior art]
Conventionally, in an urban area, the construction of a three-story house has been restricted by regulations such as the Building Standard Law. However, due to recent deregulation, construction of three-story houses has been approved, and houses with a design method and design philosophy different from those of conventional two-story houses have been demanded.
In addition, due to the dense population and soaring land prices, three-story houses tend to be built in urban areas for the purpose of second-generation and third-generation houses. Population density has led to increased construction work, residential land around factories and offices, increased traffic volume, and vibration pollution has been regarded as a problem, mainly due to construction work, factories, offices, The source is road traffic. These vibrations are transmitted to the building and may make the residents in the building feel uncomfortable.
As a method of reducing the vibration applied to the structure, as shown in JP-A-9-13740, a damping device is arranged between the foundation and the structure, or as shown in JP-A-10-82208, a building is used. There is also a known arrangement of vibration control on the roof.
In addition, as described above, there is a demand for a house where residents of the second generation and the third generation can live comfortably regardless of the location conditions.
[0003]
[Problems to be solved by the invention]
Traditionally, three-story houses using steel frame structures for ramen construction are well known, but these relate to buildings where many families live, such as condominiums and apartment houses. Yes, in the case of a single-story three-story house, it is necessary to design and plan a three-story house with a cost and structure suitable for it.
With the technique disclosed in Japanese Patent Laid-Open No. 9-13740, it is difficult to sufficiently remove vibration, and even if the load on the building due to an earthquake can be reduced, it is difficult to adapt to vibration pollution such as traffic vibration. It is.
Furthermore, the technique disclosed in Japanese Patent Application Laid-Open No. 10-82208 performs vibration control of a building having a large mass, such as a building, and targets fine vibrations such as traffic vibration generated in a house having a mass much smaller than that of a building. I have not done it.
As described above, in the conventional technology, it is difficult to construct a house where a free living space can be designed and a resident can live comfortably regardless of location conditions.
[0004]
In a house, a comfortable living environment can be ensured in terms of vibration such as traffic vibration by disposing a dynamic vibration absorber for a house.
For this purpose, it is necessary to firmly attach the dynamic vibration absorber to the house in order to reliably transmit the vibration of the housing to the dynamic vibration absorber.
In addition, when a dynamic vibration absorber is attached to a house, the construction cost increases if the configuration is significantly changed. It is desirable to maintain the basic structure of the house and to provide a dynamic vibration absorber.
[0005]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, a configuration for solving the problem will be described.
[0006]
In claim 1, a steel frame is constructed of heavy steel H-shaped steel, and a first-floor column 12 is erected on a foundation 25, and a first-floor through beam 1 a is fixed on the first-floor column 12. The second-floor split column 15 is erected on the first-floor through-beam 1a, the second-floor through-beam 1b is installed horizontally at the upper end of the second-floor split-column 15, and the second-floor through-beam 1b is The third-floor dividing pillar 16 is erected, and the third-floor through-beam 1c is laid horizontally at the upper end of the third-floor dividing pillar 16, and the first-, second-, and third-floor through-beams 1a, 1b, and 1c are provided. In the three-story ramen-structured house with a beam, the first-floor pillar 12, the second-floor pillar 15, and the third-floor pillar 16 are divided and the number of divided pillars is reduced toward the upper floor. The shed surface is constituted by the third floor through beam 1c and the small beams 42 connected to the third floor through beam 1c, and two beams 32. 2, two beams 35, 35 are laid between the beams 32, 32, and a dynamic vibration absorber 26 is disposed between the four beams 32, 32, 35, 35, The horizontal brace 1 is disposed in a portion surrounded by the beams 42, 35, and 32 around the dynamic vibration absorber 26, and the dynamic vibration absorber 26 is surrounded by the beam and surrounded by the horizontal brace 41. .
[0007]
In claim 2, a steel frame is constructed of heavy steel H-shaped steel, and a first-floor column 12 is erected on a foundation 25, and a first-floor through beam 1 a is fixed on the first-floor column 12. The second-floor split column 15 is erected on the first-floor through-beam 1a, the second-floor through-beam 1b is installed horizontally at the upper end of the second-floor split-column 15, and the second-floor through-beam 1b is The third-floor dividing pillar 16 is erected, and the third-floor through-beam 1c is laid horizontally at the upper end of the third-floor dividing pillar 16, and the first-, second-, and third-floor through-beams 1a, 1b, and 1c are provided. In the three-story ramen-structured house with a beam , the first-floor pillar 12, the second-floor pillar 15, and the third-floor pillar 16 are divided and the number of divided pillars is reduced toward the upper floor. The shed surface is constituted by the third floor through beam 1c and the small beams 42 connected to the third floor through beam 1c, and two beams 32. 2, one beam 35 is installed between the two beams 32, 32, and the dynamic vibration absorber 26 is disposed between the one small beam 42 and the beams 32, 32, 35. The horizontal brace 1 is disposed in a portion surrounded by the beams 42, 35, and 32 around the dynamic vibration absorber 26, and the dynamic vibration absorber 26 is surrounded by the beams and surrounded by the horizontal brace 41. It is.
[0008]
According to a third aspect of the present invention, in the dynamic vibration absorber mounting structure according to the first or second aspect, a part of the horizontal brace 41 is directly connected to the dynamic vibration absorber 26 .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described.
FIG. 1 is a bird's-eye view showing the structure of a three-story house, and FIG. 2 is a perspective view showing the structure of the through beam 1a of the house used in the present invention and the pillar / beam joints of the first-floor 12 and second-floor pillars 15. FIG. 3 is a schematic diagram showing how to receive the vibration of the house, FIG. 4 is a schematic diagram showing the operation configuration of the dynamic vibration absorber, FIG. 5 is a schematic diagram showing the vibration damping mechanism of the dynamic vibration absorber, and FIG. FIG. 7 is a plan view of the same, FIG. 8 is a perspective view showing another example of a fixed structure of the dynamic vibration absorber, and FIG. 9 is another example of attaching the dynamic vibration absorber to the housing. FIG. 10 is a plan view, FIG. 11 is a perspective view showing another example of a fixed configuration of the dynamic vibration absorber, and FIG. 12 is a perspective view showing another example of connecting a brace to the dynamic vibration absorber. FIG.
[0010]
The ramen construction method for a three-story house will be described with reference to FIGS.
The ramen construction method for a three-story house in which a dynamic vibration absorber is disposed is not composed of through pillars and beams as shown in FIG. 1, but through-beams 1a, 1b, and 1c. And pillars connected to the through beams 1a, 1b, and 1c.
[0011]
As the configuration of the beam winning having the through beams 1a, 1b, 1c, not the column winning having the through pillars, the first floor pillar 12, the second floor pillar 15, and the third floor pillar 16 are divided pillars, as shown in FIG. Since the structure is joined to the top and bottom of the through beam 1a, there is no need for the second-floor pillar 15 on the first-floor pillar 12 and the third-floor pillar 16 on the second-floor pillar 15, and the number of pillars required on each floor Can be arranged freely in a well-balanced manner, so that the number of dividing pillars can be reduced as it goes to the upper floor.
FIG. 2 shows a beam / column joint in the house ramen method used in the present invention, and connects the through beam 1a, the first floor column 12, the second column 15 and the like by a torcia type high tension bolt. As a structure, the earthquake resistance is improved.
[0012]
Next, the vibration-resistant structure of the house used for this invention is demonstrated using FIG.
In the unbalanced house 21b, the building tends to be twisted when subjected to vibration. Since the torsional element is added to the vibration generated in this case, the vibration component increases, the temporal change is complicated, and it is difficult to suppress the vibration. In addition, the load on the house is large.
In the house 21 having a beam-winning structure, the necessary number of pillars can be arranged in a well-balanced manner in the horizontal direction, the balance and rigidity in the horizontal direction are high, and vibration can be received horizontally.
Thereby, the vibration which a house receives can be simplified and this vibration can be suppressed easily. Moreover, the load which a house receives can be reduced and the durability of a house can be improved.
[0013]
Next, a mechanism for suppressing house vibration by the dynamic vibration absorber will be described.
As shown in FIG. 4, a dynamic vibration absorber 26 is disposed in the upper part of the house, and vibration transmitted from the vibration source to the house through the ground is eliminated by the dynamic vibration absorber 26.
When vibration is transmitted to the house in the state shown in FIG. 4 (a) as shown in FIG. 4 (b), the house starts to shake as shown in FIG. 4 (c). When the house shakes, the vibration is transmitted to the dynamic vibration absorber. As shown in FIG. 4D, the dynamic vibration absorber gives the house an inertial force using the transmitted vibration. As you can see, the shaking of the house can be eliminated.
[0014]
Next, the configuration of the dynamic vibration absorber will be described.
The dynamic vibration absorber is generally composed of an elastic member S, a damping member D, and a mass body M, and the elastic member S, the damping member D, and the mass body M are connected to a frame of the dynamic vibration absorber, A dynamic vibration absorber is fixed to the house.
Further, as shown in FIG. 5A, the elastic member S, the damping member D, and the mass body M can be connected in a linear manner as shown in FIG. Further, as shown in FIG. 5B, there is a method in which the elastic member S and the damping member D are connected in parallel and connected to the mass body M.
Generally, the mass of the mass body M is about 1 percent of the house.
In addition, as shown in FIG. 5C, two dynamic vibration absorbers that absorb vibrations in one direction can be provided to absorb vibrations in the front-rear and left-right directions.
Alternatively, a pair of elastic members S and damping members D can be connected to one mass body M in the front-rear and left-right directions, respectively, and vibration in the front-rear and left-right directions can be absorbed by one dynamic vibration absorber.
The present invention does not particularly specify a dynamic vibration absorber, and may be any one that can be disposed in a house and can absorb vibration. In particular, by using one mass body in which a pair of elastic members S and damping members D acting in the front-rear and left-right directions are connected, the arrangement space of the dynamic vibration absorber can be reduced, and installation is facilitated.
[0015]
As described above, the dynamic vibration absorber is generally composed of an elastic member, a damping member, and a mass body, and thus has a certain frequency characteristic. The frequency characteristic is a frequency at which the mass body is easily displaced, and can be adjusted by changing the characteristics (elastic coefficient, friction coefficient or viscosity) of the elastic member and the damping member.
Further, since the vibration is reduced by converting the vibration into heat energy by the damping member, a certain amount of stroke is required for the operation of the damping member. In addition, a certain amount of stroke is required to cancel the vibration due to the inertial force generated in the mass body.
For this reason, the vibration that is absorbed by the dynamic vibration absorber has a large period. The target range of vibration pollution is generally 1 to 80 Hz. The dynamic vibration absorber is only required to correspond to a frequency of 2 to 5 Hz that is easy for a resident to feel in this range of frequencies. In this range, the vibration of the house is reduced by the dynamic vibration absorber.
[0016]
Next, the arrangement configuration of the dynamic vibration absorber will be described.
As described above, the dynamic vibration absorber is disposed on the upper part of the house in order to reduce the vibration transmitted to the house. Further, in order to efficiently absorb vibration, it is necessary to increase the mounting rigidity of the dynamic vibration absorber. If the rigidity of the dynamic vibration absorber attached to the housing is low, play is caused by deformation at the connection portion of the dynamic vibration absorber, and the vibration of the house is hardly transmitted to the dynamic vibration absorber. Similarly, it is conceivable that the resistance against vibration caused by the dynamic vibration absorber is difficult to be transmitted to the house.
For this reason, when installing a dynamic vibration absorber in a house, it is necessary to increase the attachment rigidity of the dynamic vibration absorber and efficiently transmit the vibration to the dynamic vibration absorber and the resistance against the vibration of the dynamic vibration absorber to the house. There is.
In the following, an example in which the dynamic vibration absorber is disposed on the cabin surface will be described. However, the dynamic vibration absorber can be similarly disposed on the roof surface or floor beam.
[0017]
A first embodiment of the mounting configuration of the dynamic vibration absorber will be described with reference to FIGS.
In FIG. 6, the shed surface is composed of a beam 1c and a beam 42 connected to the beam 1c. A beam is constructed between the small beams 42, and the dynamic vibration absorber 26 is disposed between the beams. As shown in FIG. 7, the dynamic vibration absorber 26 is surrounded on all sides by a beam disposed on the upper portion of the housing. The dynamic vibration absorber 26 is disposed between the beams 42 and 42 connected to the beam 1c, and is fixed to the beams 32 and 32 and the beams 35 and 35 installed between the beams 42 and 42.
The beams 35 and 35 are disposed between the beams 32 and 32 and connected to the beams 32 and 32. The base portion 26 b of the dynamic vibration absorber 26 is connected to the beams 35 and 32. Further, the horizontal brace 1 is disposed in a portion surrounded by the beams 42, 35, and 32 around the dynamic vibration absorber 26 and a portion surrounded by the beams 42 and 32. That is, the dynamic vibration absorber 26 is surrounded by a beam and surrounded by a horizontal brace. As a result, it is possible to increase the attachment rigidity of the dynamic vibration absorber 26 to the beam, improve the balance of rigidity in the front-rear and left-right directions of the dynamic vibration absorber 26, and realize uniform attachment rigidity of the dynamic vibration absorber 26.
Further, since the horizontal brace 41 is disposed between the beams on the shed surface where the dynamic vibration absorber 26 is disposed, the surface rigidity of the shed surface can be improved. By improving the surface rigidity of the cabin surface, the deformation of the beam due to vibration can be suppressed, and the vibration absorbing force of the dynamic vibration absorber 26 can be reliably transmitted to the housing, thereby improving the vibration damping effect. Since the horizontal brace 41 is disposed on the entire surface of the cabin on which the dynamic vibration absorber is disposed, the rigidity on the surface of the cabin is made uniform, and the rigidity balance is improved. Thereby, the damping efficiency of the dynamic vibration absorber 26 can be improved.
[0018]
As described above, the dynamic vibration absorber is surrounded by the beam, the dynamic vibration absorber is disposed on the beam, and the horizontal brace is connected to the beam surrounding the dynamic vibration absorber, so that the mounting rigidity of the dynamic vibration absorber can be easily improved. The rigidity balance in the plane including the dynamic vibration absorber can be improved. Thereby, the deformation | transformation by the vibration of a main body can be suppressed and the vibration absorption force of a dynamic vibration absorber can be reliably transmitted to a house.
[0019]
Next, a second embodiment of the mounting configuration of the dynamic vibration absorber 26 will be described with reference to FIGS.
As shown in FIGS. 9 and 10, the dynamic vibration absorber 26 is supported by the beams 32 and 32 and the beam 42 on the hut surface constituted by the beam 1 c and the beam 42. Beams 32 and 32, a beam 42, and a horizontal brace 41 are connected to the dynamic vibration absorber 26 in front, rear, left and right, respectively.
In this embodiment, the three sides of the dynamic vibration absorber 26 are surrounded by beams 32, 32, and 42, and a horizontal brace 41 is disposed on one side to improve the mounting rigidity of the dynamic vibration absorber 26.
As shown in FIG. 11, the dynamic vibration absorber 26 is fixed on a beam 35 disposed between the beams 32 and 32, and the horizontal brace 41 is directly connected to the dynamic vibration absorber 26. The dynamic vibration absorber 26 is fixed on the beam 35, and the horizontal brace 41 and the beams 32, 32, and 42 are disposed on the sides, so that the degree of freedom in arrangement of the dynamic vibration absorber 26 can be improved. .
Further, even when the dynamic vibration absorber 26 is disposed on the beam 35, the horizontal brace 41 is disposed in the side surface direction, so that the horizontal mounting rigidity can be easily improved. Since the brace for improving the rigidity in the horizontal direction is directly connected to the side portion of the dynamic vibration absorber 26, play when vibration can be transmitted can be reduced, and reliable vibration suppression can be performed.
[0020]
Further, as shown in FIG. 12, it is possible to fix the dynamic vibration absorber 26 on the beam 35 disposed between the beams 32 and 32 and connect the horizontal braces 41 and 41 to the dynamic vibration absorber 26. . Accordingly, the dynamic vibration absorber 26 can be easily disposed on the beam, and the horizontal mounting brace can improve the mounting rigidity of the dynamic vibration absorber 26 in the horizontal direction.
[0021]
【The invention's effect】
As in claim 1, a steel frame is constructed of heavy steel H-shaped steel, a first-floor column 12 is erected on a foundation 25, and a first-floor through beam 1 a is fixed on the first-floor column 12. The second-floor split column 15 is erected on the first-floor through-beam 1a, the second-floor through-beam 1b is installed horizontally at the upper end of the second-floor split-column 15, and the second-floor through-beam 1b is The third-floor dividing pillar 16 is erected, and the third-floor through-beam 1c is laid horizontally at the upper end of the third-floor dividing pillar 16, and the first-, second-, and third-floor through-beams 1a, 1b, and 1c are provided. In the three-story ramen-structured house with a beam, the first-floor pillar 12, the second-floor pillar 15, and the third-floor pillar 16 are divided and the number of divided pillars is reduced toward the upper floor. The shed surface is configured by the third-floor through beam 1c and the small beams 42 connected to the third-floor through beam 1c, and the two beams 32 and 32 between the small beams 42 and 42. The two beams 35 and 35 are installed between the beams 32 and 32, and the dynamic vibration absorber 26 is disposed between the four beams 32, 32, 35 and 35. Since the horizontal brace 1 is disposed in a portion surrounded by the beams 42, 35, and 32 around the vessel 26 and the dynamic vibration absorber 26 is surrounded by the beams and surrounded by the horizontal brace 41 , the dynamic vibration absorber The rigidity of the surface on which is disposed is improved and uniformized. Thereby, the deformation | transformation of the beam around a dynamic vibration damper can be suppressed and the damping effect by this dynamic vibration damper can be improved.
[0022]
Also, the mounting rigidity of the dynamic vibration absorber can be easily secured by the beam, and the surface rigidity of the cabin surface, roof surface or floor surface is improved by the brace, so that the vibration damping effect by the dynamic vibration absorber can be improved.
[0023]
As described in claim 2, a steel frame is constructed of heavy steel H-shaped steel, and the first floor pillar 12 is erected on the foundation 25, and the first floor through beam 1a is fixed on the first floor pillar 12. The second-floor split pillar 15 is erected on the first-floor through beam 1a, the second-floor through-beam 1b is installed horizontally at the upper end of the second-floor split pillar 15, and the second-floor through-beam 1b The third-floor dividing pillar 16 is erected on the top, and the third-floor through-beam 1c is horizontally installed at the upper end of the third-floor dividing pillar 16 so that the first-, second-, and third-floor through-beams 1a and 1b are provided.・ In 1c, the first-floor pillar 12, the second-floor pillar 15 and the third-floor pillar 16 are divided into pillars, and the number of divided pillars is reduced as you go to the upper floor, The roof surface of the roof is composed of the third-floor through beam 1c and the small beams 42 connected to the third-floor through beam 1c, and two beams 3 between the small beams 42 and 42. 32 is installed, one beam 35 is installed between the two beams 32 and 32, and the dynamic vibration absorber 26 is disposed between the one small beam 42 and the beams 32, 32, and 35. The horizontal brace 1 is disposed in a portion surrounded by the beams 42, 35, and 32 around the dynamic vibration absorber 26, and the dynamic vibration absorber 26 is surrounded by the beams and surrounded by the horizontal brace 41. Therefore, the horizontal mounting rigidity of the dynamic vibration absorber can be easily secured by the beam, and the surface rigidity of the hut surface, roof surface or floor surface can be improved and made uniform by braces. The damping effect by the dynamic vibration absorber can be improved.
[0024]
As described in claim 3, since the brace 41 is directly connected to the dynamic vibration absorber 26, the degree of freedom in arrangement of the dynamic vibration absorber can be improved.
Even when the dynamic vibration absorber is disposed on the beam, the brace is disposed in the side surface direction, so that the horizontal mounting rigidity can be easily improved. Since the brace 41 for improving the rigidity in the horizontal direction is directly connected to the side portion of the dynamic vibration absorber, the friction loss when the vibration can be transmitted can be reduced, and reliable vibration suppression can be performed.
[Brief description of the drawings]
FIG. 1 is an overhead view showing a ramen construction method for a three-story house.
FIG. 2 is a perspective view showing the structure of a through beam 1a and the column / beam joints of the first-floor column 12 and the second-floor column 15;
FIG. 3 is a schematic diagram showing how to receive vibration of a house.
FIG. 4 is a schematic diagram showing an operational configuration of a dynamic vibration absorber.
FIG. 5 is a schematic diagram showing a configuration of a dynamic vibration absorber.
FIG. 6 is a perspective view showing an example of attaching a dynamic vibration absorber to a housing.
FIG. 7 is also a plan view.
FIG. 8 is a perspective view showing another example of the fixed configuration of the dynamic vibration absorber.
FIG. 9 is a perspective view showing another example of attaching the dynamic vibration absorber to the housing.
FIG. 10 is also a plan view.
FIG. 11 is a perspective view showing another example of the fixed configuration of the dynamic vibration absorber.
FIG. 12 is a perspective view showing another example of connecting a brace to a dynamic vibration absorber.
[Explanation of symbols]
1a ・ 1b ・ 1c Through beam 12 ・ 15 ・ 16 Column 26 Dynamic vibration absorber 26b Frame 32 ・ 35 Beam 41 Brace 42 Small beam

Claims

A steel frame is composed of heavy steel H-shaped steel, and the first floor pillar 12 is erected on the foundation 25, and the first floor through beam 1a is fixed on the first floor pillar 12, and the first floor through beam is constructed. A split pillar 15 on the second floor is erected on 1a, a through beam 1b on the second floor is installed on the upper end of the split pillar 15 on the second floor, and a split pillar 16 on the third floor is placed on the second beam 1b. Is installed on the upper end of the split pillar 16 on the third floor, and the first floor, the second floor, and the third floor through beams 1a, 1b, and 1c are mainly installed on the first floor. In a three-story ramen-structured house with a beam, the pillars 12, the second-floor pillars 15 and the third-floor pillars 16 are divided and the number of divided pillars is reduced toward the upper floor.
The roof surface of the roof is composed of the third-floor through beam 1c and the small beams 42 connected to the third-floor through beam 1c, and two beams 32, 32 between the small beams 42, 42. The two beams 35 and 35 are installed between the beams 32 and 32, and the dynamic vibration absorber 26 is disposed between the four beams 32, 32, 35, and 35.
The horizontal brace 1 is disposed in a portion surrounded by the beams 42, 35, and 32 around the dynamic vibration absorber 26, and the dynamic vibration absorber 26 is surrounded by the beams and surrounded by the horizontal brace 41. A characteristic structure for mounting a dynamic vibration absorber.

A steel frame is composed of heavy steel H-shaped steel, and the first floor pillar 12 is erected on the foundation 25, and the first floor through beam 1a is fixed on the first floor pillar 12, and the first floor through beam is constructed. A split pillar 15 on the second floor is erected on 1a, a through beam 1b on the second floor is installed on the upper end of the split pillar 15 on the second floor, and a split pillar 16 on the third floor is placed on the second beam 1b. Is installed on the upper end of the split pillar 16 on the third floor, and the first floor, the second floor, and the third floor through beams 1a, 1b, and 1c are mainly installed on the first floor. In a three-story ramen-structured house with a beam, the pillars 12, the second-floor pillars 15 and the third-floor pillars 16 are divided and the number of divided pillars is reduced toward the upper floor.
The roof surface of the roof is composed of the third-floor through beam 1c and the small beams 42 connected to the third-floor through beam 1c, and two beams 32, 32 between the small beams 42, 42. , One beam 35 is installed between the two beams 32 and 32, and the dynamic vibration absorber 26 is disposed between the one beam 42 and the beams 32, 32, and 35.
The horizontal brace 1 is disposed in a portion surrounded by the beams 42, 35, and 32 around the dynamic vibration absorber 26, and the dynamic vibration absorber 26 is surrounded by the beams and surrounded by the horizontal brace 41. A characteristic structure for mounting a dynamic vibration absorber.

In the dynamic vibration absorber mounting structure according to claim 1 or 2,
A structure for mounting a dynamic vibration absorber, wherein a part of the horizontal brace 41 is directly connected to the dynamic vibration absorber 26 .