A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a seismic base isolation gravestone which does not overturn even if a large earthquake is received in a state of being left for a long period of time, and which has both a vibration isolation effect against a normal earthquake wave and a resonance suppression effect against a long period earthquake wave.SOLUTION: A wide mounting plate 2 is fixed on a bottom surface of a rod stone (upper gravestone) 1, and a center part of a bottom surface of the mounting plate 2 is supported by a link ball (spherical bearing) 9 fixed to an intermediate gravestone 3, and a viscoelastic body block 5 is provided between at least four corners of the mounting plate 2 and the intermediate gravestone 3. The link ball causes the rod stone 1 to perform a rotational motion in the reverse direction of the earthquake motion, but the rotational motion is suppressed by the viscoelastic body block 5.SELECTED DRAWING: Figure 1
【課題】長期間放置された状態で巨大地震を受けても転倒せず、通常の地震波に対する免震効果と長周期地震波に対する共振抑制効果を併せ持つような、免震墓石を提供すること。【解決手段】竿石（上部墓石）１の底面に幅広い取付板２を固着し、取付板２の底面中心部を中間墓石３に固定したリンクボール（球面軸受）９によって支持し、加えて取付板２の少なくとも四隅と中間墓石３の間に粘弾性体ブロック５を装備した。リンクボールによって、竿石１は地震動と逆方向の回転運動を行うが、その回転運動は粘弾性体ブロック５により抑制される。【選択図】図１
PROBLEM TO BE SOLVED: To provide a seismic base isolation gravestone which does not overturn even if a large earthquake is received in a state of being left for a long period of time, and which has both a vibration isolation effect against a normal earthquake wave and a resonance suppression effect against a long period earthquake wave.SOLUTION: A wide mounting plate 2 is fixed on a bottom surface of a rod stone (upper gravestone) 1, and a center part of a bottom surface of the mounting plate 2 is supported by a link ball (spherical bearing) 9 fixed to an intermediate gravestone 3, and a viscoelastic body block 5 is provided between at least four corners of the mounting plate 2 and the intermediate gravestone 3. The link ball causes the rod stone 1 to perform a rotational motion in the reverse direction of the earthquake motion, but the rotational motion is suppressed by the viscoelastic body block 5.SELECTED DRAWING: Figure 1
【課題】長期間放置された状態で巨大地震を受けても転倒せず、通常の地震波に対する免震効果と長周期地震波に対する共振抑制効果を併せ持つような、免震墓石を提供すること。【解決手段】竿石（上部墓石）１の底面に幅広い取付板２を固着し、取付板２の底面中心部を中間墓石３に固定したリンクボール（球面軸受）９によって支持し、加えて取付板２の少なくとも四隅と中間墓石３の間に粘弾性体ブロック５を装備した。リンクボールによって、竿石１は地震動と逆方向の回転運動を行うが、その回転運動は粘弾性体ブロック５により抑制される。【選択図】図１
ASEISMIC BASE ISOLATION GRAVESTONE
免震墓石
OMATA JUNICHIRO (author)
2018-09-20
Patent
Electronic Resource
Japanese
IPC:
E04H
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