JP3639294B1 - 構造物の耐震補強構造 - Google Patents
構造物の耐震補強構造 Download PDFInfo
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Abstract
【解決手段】 先端12aが支持層7まで打ち込まれた複数の既設杭12の頭部12bに既設フーチング11を支持し、既設フーチング11の周囲を補強するようにした既設橋脚10の耐震補強構造において、既設フーチング11の周囲の地盤8中に四角筒状の鋼矢板壁13を設け、既設フーチング11と四角筒状の鋼矢板壁13との間の地盤8中に先端14aが支持層7まで打ち込まれる複数の増設杭14を設け、四角筒状の鋼矢板壁13とフーチング11との間にコンクリート15を増設して既設フーチング11と鋼矢板壁13を一体化して固定し、四角筒状の鋼矢板壁13内の既設フーチング11及び増設コンクリート15の真下の地盤8を既設杭12及び増設杭14の水平抵抗に有効な範囲の深度まで所定の固化材を介して固化改良した。
【選択図】 図1
Description
8 地盤
10 既設橋脚(構造物)
11 既設フーチング
12 既設杭
12a 先端
12b 頭部
13 四角筒状の鋼矢板壁(環状の地中壁)
14 既設杭(増し杭)
14a 先端
14b 頭部
15 鉄筋コンクリート(増設コンクリート)
A,B 固化改良部分
Claims (3)
- 先端が所定位置まで打ち込まれた複数の既設杭の頭部に既設フーチングを支持し、この既設フーチングの周囲を補強するようにした構造物の耐震補強構造において、
前記既設フーチングの周囲の地盤中に環状の地中壁を設けると共に、これら既設フーチングと環状の地中壁との間の地盤中に先端が所定位置まで打ち込まれる複数の増設杭を設け、かつ前記環状の地中壁と前記既設フーチングとの間にコンクリートを増設して両者を一体化すると共に、該環状の地中壁内の少なくとも前記増設コンクリートの真下の地盤を前記複数の増設杭の水平抵抗に有効な範囲の深度まで固化改良し、かつ前記増設コンクリートを前記複数の増設杭の頭部で支持したことを特徴とする構造物の耐震補強構造。 - 請求項1記載の構造物の耐震補強構造において、
前記環状の地中壁内の前記既設フーチング及び前記増設コンクリートの真下の地盤の全部を前記複数の既設杭及び前記複数の増設杭の水平抵抗に有効な範囲の深度まで固化改良したことを特徴とする構造物の耐震補強構造。 - 請求項1記載の構造物の耐震補強構造において、
前記環状の地中壁内の前記増設コンクリートの真下の地盤の外周部を前記複数の増設杭の水平抵抗に有効な範囲の深度まで固化改良したことを特徴とする構造物の耐震補強構造。
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JP2003424229A JP3639294B1 (ja) | 2003-12-22 | 2003-12-22 | 構造物の耐震補強構造 |
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JP2003424229A JP3639294B1 (ja) | 2003-12-22 | 2003-12-22 | 構造物の耐震補強構造 |
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JP3639294B1 true JP3639294B1 (ja) | 2005-04-20 |
JP2005180079A JP2005180079A (ja) | 2005-07-07 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110593326A (zh) * | 2019-10-11 | 2019-12-20 | 西南交通大学 | 一种盆地丘陵陡坡地带高层建筑综合抗震结构 |
Families Citing this family (13)
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JP3895363B1 (ja) * | 2006-03-17 | 2007-03-22 | 株式会社不動テトラ | 新設基礎構造 |
JP4794390B2 (ja) * | 2006-08-08 | 2011-10-19 | 大成建設株式会社 | 杭基礎補強構造および補強方法 |
JP2008303598A (ja) * | 2007-06-07 | 2008-12-18 | Nippon Steel Corp | 多柱式橋脚における柱脚構造 |
JP5154850B2 (ja) * | 2007-07-04 | 2013-02-27 | オリエンタル白石株式会社 | 地中構造物の外部補強方法 |
KR100970766B1 (ko) | 2008-06-16 | 2010-07-16 | 양형칠 | 교량의 세굴방지 및 내진용 기초보강공법 |
JP5480744B2 (ja) * | 2010-08-02 | 2014-04-23 | 公益財団法人鉄道総合技術研究所 | 構造物用基礎およびその構築方法 |
JP5480745B2 (ja) * | 2010-08-02 | 2014-04-23 | 公益財団法人鉄道総合技術研究所 | 構造物用既設基礎の補強方法 |
JP5587725B2 (ja) * | 2010-10-05 | 2014-09-10 | 公益財団法人鉄道総合技術研究所 | 構造物用既設基礎の補強方法 |
JP2014205989A (ja) * | 2013-04-12 | 2014-10-30 | 東日本旅客鉄道株式会社 | 橋脚補強構造及び橋脚補強方法 |
JP6493834B2 (ja) * | 2014-04-15 | 2019-04-03 | 公益財団法人鉄道総合技術研究所 | 地盤の液状化対策工法 |
JP6812819B2 (ja) * | 2017-02-09 | 2021-01-13 | 日本製鉄株式会社 | 基礎補強構造、補強基礎構造物および基礎補強方法 |
JP6222791B1 (ja) * | 2017-06-29 | 2017-11-01 | 株式会社ハナミズキ・ブリッジ・プランニング | 橋脚基礎の耐震補強方法及び橋脚の耐震補強方法 |
JP7115923B2 (ja) * | 2018-07-04 | 2022-08-09 | 鹿島建設株式会社 | 基礎構造補強方法及び基礎構造補強構造 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110593326A (zh) * | 2019-10-11 | 2019-12-20 | 西南交通大学 | 一种盆地丘陵陡坡地带高层建筑综合抗震结构 |
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