JP6693698B2 - 免震装置 - Google Patents
免震装置 Download PDFInfo
- Publication number
- JP6693698B2 JP6693698B2 JP2015001197A JP2015001197A JP6693698B2 JP 6693698 B2 JP6693698 B2 JP 6693698B2 JP 2015001197 A JP2015001197 A JP 2015001197A JP 2015001197 A JP2015001197 A JP 2015001197A JP 6693698 B2 JP6693698 B2 JP 6693698B2
- Authority
- JP
- Japan
- Prior art keywords
- seismic isolation
- isolation device
- conductive filler
- laminated
- hollow portion
- 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.)
- Active
Links
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Images
Classifications
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Landscapes
- Engineering & Computer Science (AREA)
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- Emergency Management (AREA)
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- Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
- Laminated Bodies (AREA)
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Description
熱導電性フィラー及び黒鉛としての鱗片状黒鉛及び熱硬化性樹脂としてのフェノール樹脂又はこれらにゴム粉末及び結晶性ポリエステル樹脂のうちの少なくとも一方を表1及び表2に示す配合割合(体積%)に秤量し、これらをミキサーなどの撹拌混合器に投入し、均一に撹拌混合した混合物を120℃の温度に加熱したニーダーに投入し、加熱しながら混錬して減衰体材料を作製し、この減衰体材料を120℃の温度に加熱した金型の円柱状中空部に充填し、成型圧力60N/mm2で圧縮成形し、圧縮成形後、金型の円柱状中空部で加圧状態を保持しながら減衰体材料を徐冷し、常温まで冷却した後、金型の円柱状中空部から直径φ50mm、長さ10mmの円盤状(円板状)の減衰体12を取り出した。
免震装置1に、鉛直方向に5MPa、10MPa、15MPa及び20MPaの夫々の鉛直面圧Pを負荷した状態で水平方向Hに0.33Hzの加振周波数で加振して水平方向剪断変形(±48mm=±100%剪断歪)を生じさせた。免震装置1の下端に対するその上端の水平方向の変位(横軸δ)と免震装置1の水平方向荷重(水平力)(縦軸Q)との関係(水平復元力特性図)を示す図5において、ヒステリシス曲線(実線)で囲まれた領域の面積ΔWが大きくなるほど、振動エネルギを多く吸収できることを意味するが、ここでは、水平方向剪断変形、即ち±100%剪断歪における切片荷重(降伏荷重)Qd(ヒステリシス曲線が縦軸Qと交差する点での水平方向荷重Qd1及び│Qd2│を用いて、式:Qd=(Qd1+│Qd2│)/2で計算した値)で円柱体14の減衰性能を評価(切片荷重Qdが大きくなるほど、ヒステリシス曲線で囲まれた領域の面積が広くなり、減衰性能が優れることを示す)した。
免震装置1に、先に示した5MPa、10MPa、15MPa及び20MPaの鉛直面圧(鉛直荷重)Pを夫々負荷し、各鉛直面圧Pにおける切片荷重Qdを求め、10MPa、15MPa及び20MPaの各鉛直面圧Pによる切片荷重Qdの変化を、鉛直面圧5MPaの切片荷重Qdを1.00とした比(倍率)で算出して、この比で面圧依存性を評価した。この比が鉛直面圧Pの増加に伴って増加する免震装置1は、鉛直面圧Pに応じた切片荷重Qdを発生し、支持する荷重の異なる上部構造物に応じた免震効果を発揮できる特性を有することになる。
免震装置1に、(1)水平方向変形率100%、0.1Hz及び(2)水平方向変形率300%、0.33Hzの繰り返し加振を行い、エネルギ吸収性能の維持率を降伏荷重維持率(=Qdn/Qd1、ここで、Qd1は、一回目の加振での切片荷重Qdの値であって、Qdnは、n回目の加振での切片荷重Qdの値)として求める試験を行った。
2 弾性板
3 弾性層
4 薄肉剛性鋼板
5、6 厚肉剛性鋼板
7 剛性層
8 積層弾性体
9 被覆層
10 内周面
11 円柱状中空部
12 減衰体
14 円柱体
Claims (7)
- 剛性層及び弾性層が交互に積層されてなる積層弾性体と、少なくともこの積層弾性体の内周面で規定された少なくとも一つの柱状中空部に配された減衰体からなる柱体とを備えており、減衰体は、熱伝導性フィラーと鱗片状黒鉛と熱硬化性樹脂と加硫ゴム粉末とを含んでおり、熱伝導性フィラーは、酸化マグネシウムを含んでおり、熱硬化性樹脂は、フェノール樹脂を含んでいる免震装置。
- 剛性層及び弾性層が交互に積層されてなる積層弾性体と、少なくともこの積層弾性体の内周面で規定された少なくとも一つの柱状中空部に配されていると共に柱状中空部の軸方向に積層された複数個の減衰体からなる柱体とを備えており、各減衰体は、熱伝導性フィラーと鱗片状黒鉛と熱硬化性樹脂と加硫ゴム粉末とを含んでおり、熱伝導性フィラーは、酸化マグネシウムを含んでおり、熱硬化性樹脂は、フェノール樹脂を含んでいる免震装置。
- 減衰体は、熱伝導性フィラー35〜70体積%と、鱗片状黒鉛5〜50体積%と、熱硬化性樹脂10〜30体積%とを含んでいる請求項1又は2に記載の免震装置。
- 減衰体は、加硫ゴム粉末40体積%以下を含んでいる請求項1から3のいずれか一項に記載の免震装置。
- 減衰体は、結晶性ポリエステル樹脂を更に含んでいる請求項1から4のいずれか一項に記載の免震装置。
- 減衰体は、結晶性ポリエステル樹脂25体積%以下を含んでいる請求項5に記載の免震装置。
- 柱体は、積層弾性体と共に積層方向の荷重をも支持するようになっている請求項1から6のいずれか一項に記載の免震装置。
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TW104138820A TWI673414B (zh) | 2014-11-28 | 2015-11-23 | 防震裝置 |
PCT/JP2015/005831 WO2016084363A1 (ja) | 2014-11-28 | 2015-11-24 | 免震装置 |
EP15864148.0A EP3225876A4 (en) | 2014-11-28 | 2015-11-24 | Seismic isolation device |
CN201580064911.3A CN107002813B (zh) | 2014-11-28 | 2015-11-24 | 隔震装置 |
KR1020177014349A KR102399782B1 (ko) | 2014-11-28 | 2015-11-24 | 면진 장치 |
US15/528,715 US20170268225A1 (en) | 2014-11-28 | 2015-11-24 | Seismic isolation apparatus |
JP2020001672A JP6891305B2 (ja) | 2014-11-28 | 2020-01-08 | 免震装置 |
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CN109195791A (zh) | 2016-05-31 | 2019-01-11 | 三井化学株式会社 | 金属/树脂复合结构体、金属构件及金属构件的制造方法 |
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CN106592804A (zh) * | 2016-12-23 | 2017-04-26 | 大连理工大学 | 一种高阻尼橡胶体内穿形状记忆合金绞线的阻尼器 |
CN110965834B (zh) * | 2019-11-01 | 2023-01-03 | 中国建筑股份有限公司 | 一种基于石墨烯的隔震支座及其施工方法 |
IT202000001177A1 (it) * | 2020-01-29 | 2021-07-29 | Santis Giovanni De | Nodo di connessione per tiranti in barre filettate a risposta dinamica regolabile con cuscino elastomerico non confinato |
CN115247509B (zh) * | 2022-01-24 | 2023-09-22 | 昆明理工大学 | 一种隔震装置 |
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