JP2021099124A - 滑り免震装置 - Google Patents
滑り免震装置 Download PDFInfo
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Abstract
Description
第一摺動面を備えている構造体固定板と、該第一摺動面と当接する第二摺動面を備えている金属製の摺動体と、を有する滑り免震装置であって、
高強度繊維とPTFE繊維とを合わせて撚った複数の合撚糸により形成される一重織物からなる摩擦材が、前記第一摺動面と前記第二摺動面のいずれか一方、もしくは双方に取り付けられていることを特徴とする。
前記摺動体は、その上下面において、上下の前記第一摺動面に当接する上下の前記第二摺動面を備えており、
前記摩擦材が、前記上部構造体固定板及び前記下部構造体固定板のそれぞれの前記第一摺動面、もしくは、前記摺動体の上下の前記第二摺動面のいずれか一方もしくは双方に取付けられている、二面滑り支承であることを特徴とする。
前記摺動体は、前記第一摺動面に当接する前記第二摺動面を備えるとともに受け台にて保持されており、
前記摩擦材が、前記構造体固定板の前記第一摺動面、もしくは、前記摺動体の前記第二摺動面のいずれか一方もしくは双方に取付けられている、片面滑り支承であることを特徴とする。
はじめに、図1乃至図4を参照して、実施形態に係る滑り免震装置の一例について説明する。ここで、図1は、第1の実施形態に係る滑り免震装置の分解斜視図であり、図2は、第1の実施形態に係る滑り免震装置の縦断面図である。また、図3は、一重織物からなる摩擦材を上から見た平面図であり、図4は、図3のIV−IVラインで切断した断面図であって、一重織物からなる摩擦材の一例の構造を構造体固定板への取り付け態様とともに説明する図である。
(1)織物をタテ200mm×ヨコ200mmに裁断した後、経糸と緯糸を分解し、分解糸の総重量Wを測定する。
(2)分解糸のうち複合糸のみを選別し、織物中の複合糸の総重量W1を測定する。
(3)複合糸を任意に5本選択し、フッ素樹脂繊維Aとその他の繊維に分解し、それぞれの重量を測定する。5本の複合糸の重量総和をW、5本の複合糸のフッ素樹脂繊維Aの重量和をWFとして、複合糸中に占めるフッ素樹脂繊維Aの重量比率αを式:α=WF/W×100(%)により算出する。
ただし、分解糸が上記測定方法に必要な糸量を確保できない場合は、確保できる最大長さと試行回数にて試験を行った結果をもって代用するものとする。
(4)複合糸ではなく織物中に単独で存在するフッ素樹脂繊維を選別し、総重量W2を測定する。
(5)織物中のフッ素樹脂繊維Aの重量比率Yを、式:Y={(W1×α/100+W2)/W}×100(%)により算出する。
ただし、分解糸が上記測定方法に必要な糸量を確保できない場合は、確保できる最大長さにて試験を行った結果をもって代用するものとする。
次に、図6を参照して、第2の実施形態に係る滑り免震装置の一例について説明する。ここで、図6は、第2の実施形態に係る滑り免震装置の縦断面図である。
<摺動実験その1>
次に、本発明者等により実施された摺動実験その1について説明する。この摺動実験その1は、二重織物からなる摩擦材と一重織物からなる摩擦材の摺動距離を比較する実験である。
金属基板にサンプルとなる種々の摩擦材を接着することにより、三種類の試験体を製作した。金属基板はSS400(一般構造用圧延鋼板)を適用し、接着剤にはエポキシ樹脂(本材:硬化剤=4:1)を塗布量約25g/m2用いた。
次に、本発明者等により実施された摺動実験その2について説明する。この摺動実験その2は、摩擦材におけるPTFE繊維の重量比の最適範囲を検証するための実験である。
試験体の製作方法は摺動実験その1と同様である。
次に、本発明者等により実施された摺動実験その3について説明する。この摺動実験その3は、60MPaの面圧下における、二重織物からなる摩擦材を備えた滑り免震装置(比較例2)と一重織物からなる摩擦材を備えた滑り免震装置(実施例5)の摺動距離を比較する実験である。
比較例2の滑り免震装置の摩擦材を形成する二重織物は、PTFE繊維とPPS繊維からなる二重織物であり、実施例5の滑り免震装置の摩擦材を形成する一重織物は、実施例2と同様である。比較例2、実施例5ともに、摺動体の直径はφ130mm、高さは65mmである。本摺動実験においても、摩擦材が破損するまでの摺動距離を測定した。
11 :摺動体本体
12 :上面(第二摺動面)
13 :下面(第二摺動面)
20 :上部構造体固定板(構造体固定板)
21 :下面(第一摺動面)
30 :下部構造体固定板(構造体固定板)
31 :上面(第一摺動面)
40 :摩擦材(一重織物)
41 :経糸(合撚糸)
42 :緯糸
43 :接着剤
50 :構造体固定板
51 :下面(第一摺動面)
60 :受け台
61 :基板
62 :円柱体
63 :凹球面
70 :摺動体
71 :下面(凸球面)
72 :上面(第二摺動面)
100 :滑り免震装置(二面滑り支承の滑り免震装置)
200 :滑り免震装置(片面滑り支承の滑り免震装置)
Claims (5)
- 第一摺動面を備えている構造体固定板と、該第一摺動面と当接する第二摺動面を備えている金属製の摺動体と、を有する滑り免震装置であって、
高強度繊維とPTFE繊維とを合わせて撚った複数の合撚糸により形成される一重織物からなる摩擦材が、前記第一摺動面と前記第二摺動面のいずれか一方、もしくは双方に取り付けられていることを特徴とする、滑り免震装置。 - 前記一重織物は、経糸と緯糸がともに前記合撚糸からなる形態、もしくは、経糸と緯糸のいずれか一方のみが前記合撚糸からなり、他方は前記高強度繊維からなる形態、もしくは、経糸と緯糸のいずれか一方のみが前記合撚糸からなり、他方はPTFE繊維からなる形態、のいずれか一種であることを特徴とする、請求項1に記載の滑り免震装置。
- 前記高強度繊維がPPS繊維もしくは液晶ポリエステル繊維のいずれか一種であることを特徴とする、請求項1又は2に記載の滑り免震装置。
- 前記構造体固定板は、ともに前記第一摺動面を備えている上部構造体固定板及び下部構造体固定板を含み、
前記摺動体は、その上下面において、上下の前記第一摺動面に当接する上下の前記第二摺動面を備えており、
前記摩擦材が、前記上部構造体固定板及び前記下部構造体固定板のそれぞれの前記第一摺動面、もしくは、前記摺動体の上下の前記第二摺動面のいずれか一方もしくは双方に取付けられている、二面滑り支承であることを特徴とする、請求項1乃至3のいずれか一項に記載の滑り免震装置。 - 前記構造体固定板は前記第一摺動面を備えており、
前記摺動体は、前記第一摺動面に当接する前記第二摺動面を備えるとともに受け台にて保持されており、
前記摩擦材が、前記構造体固定板の前記第一摺動面、もしくは、前記摺動体の前記第二摺動面のいずれか一方もしくは双方に取付けられている、片面滑り支承であることを特徴とする、請求項1乃至3のいずれか一項に記載の滑り免震装置。
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CN202080045991.9A CN114051547A (zh) | 2019-12-20 | 2020-10-27 | 滑动隔震装置 |
MX2022000512A MX2022000512A (es) | 2019-12-20 | 2020-10-27 | Dispositivo de aislamiento sismico deslizante. |
PCT/JP2020/040188 WO2021124686A1 (ja) | 2019-12-20 | 2020-10-27 | 滑り免震装置 |
US17/596,234 US11629517B2 (en) | 2019-12-20 | 2020-10-27 | Sliding seismic isolation device |
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