A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FOUNDATION FOOTING STRENGTHENING METHOD FOR EXISTING BRIDGE PIER
To provide an earthquake strengthening method for the foundation footing 2 of an existing bridge pier 1.SOLUTION: The foundation footing strengthening method comprises steps of: excavating ground around an existing bridge pier 1 to expose the upper face 2a of a foundation footing 2 (step a); installing anchor bars 4 to a bridge pier side face 1a and the upper face 2a of the foundation footing exposed by excavation, respectively (step b); and casting concrete in place in at least haunch state by winding the anchor bars 4 in the bridge pier side face 1a and the foundation footing upper face 2a to construct a strengthened structure (haunch concrete) 5 (step c). Or, a steel-made strengthened structure is used. Then, the excavated part is backfilled to cover the strengthened structure 5.SELECTED DRAWING: Figure 1
【課題】 既設橋脚１の基礎フーチング２を耐震補強する。【解決手段】 既設橋脚１の周囲の地盤を基礎フーチング２の上面２ａが露出するまで掘削する（工程ａ）。前記掘削により露出させた橋脚側面１ａ及び基礎フーチング上面２ａにそれぞれアンカー筋４を設置する（工程ｂ）。前記橋脚側面１ａ及び前記基礎フーチング上面２ａに前記アンカー筋４を巻込んで、少なくともハンチ状にコンクリートを場所打ちし、補強構造体（ハンチコンクリート）５を構築する（工程ｃ）。あるいは、鋼製の補強構造体を用いる。そして、前記補強構造体５を覆うように、前記掘削した箇所を埋戻す。【選択図】 図１
FOUNDATION FOOTING STRENGTHENING METHOD FOR EXISTING BRIDGE PIER
To provide an earthquake strengthening method for the foundation footing 2 of an existing bridge pier 1.SOLUTION: The foundation footing strengthening method comprises steps of: excavating ground around an existing bridge pier 1 to expose the upper face 2a of a foundation footing 2 (step a); installing anchor bars 4 to a bridge pier side face 1a and the upper face 2a of the foundation footing exposed by excavation, respectively (step b); and casting concrete in place in at least haunch state by winding the anchor bars 4 in the bridge pier side face 1a and the foundation footing upper face 2a to construct a strengthened structure (haunch concrete) 5 (step c). Or, a steel-made strengthened structure is used. Then, the excavated part is backfilled to cover the strengthened structure 5.SELECTED DRAWING: Figure 1
【課題】 既設橋脚１の基礎フーチング２を耐震補強する。【解決手段】 既設橋脚１の周囲の地盤を基礎フーチング２の上面２ａが露出するまで掘削する（工程ａ）。前記掘削により露出させた橋脚側面１ａ及び基礎フーチング上面２ａにそれぞれアンカー筋４を設置する（工程ｂ）。前記橋脚側面１ａ及び前記基礎フーチング上面２ａに前記アンカー筋４を巻込んで、少なくともハンチ状にコンクリートを場所打ちし、補強構造体（ハンチコンクリート）５を構築する（工程ｃ）。あるいは、鋼製の補強構造体を用いる。そして、前記補強構造体５を覆うように、前記掘削した箇所を埋戻す。【選択図】 図１
FOUNDATION FOOTING STRENGTHENING METHOD FOR EXISTING BRIDGE PIER
既設橋脚の基礎フーチング補強方法
IDE YUSUKE (author)
2022-01-13
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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