A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PILE HEAD ISOLATION STRUCTURE AND CONSTRUCTION METHOD THEREOF
To provide a pile head isolation structure capable of fixing a seismic isolation device with large outside diameter according to a pile diameter to the pile head while reducing the construction period by using a precast pile including a steel pipe covering the outer peripheral surface, and a construction method thereof.SOLUTION: A precast pile 2 that has a cylindrical outer shell concrete 3 integrated with a steel pipe 5 on the outer peripheral surface, the upper end of the steel pipe 5 being formed protruding upward from the upper end of the outer shell concrete 3 is manufactured in such manner that ready-mixed concrete placed inside the steel pipe 5 is hardened with a centrifugal force and solidified into a tubular shape. At the construction site, after the precast pile 2 is installed into the ground G, an inner space 2a of the pile head is filled with solidifying member 6 to be flat and a plurality of anchor bolts 4 are embedded in an upper portion of the upper end of the outer shell concrete 3 at intervals in the peripheral direction, and a seismic isolation device 10 placed on the upper face of the pile head is fixed to the precast pile 2 via the plurality of anchor bolts 4.SELECTED DRAWING: Figure 1
【課題】外周面を覆う鋼管を備えた既製杭を用いて施工工期を短縮しつつ、杭径に応じた外径サイズの大きい免震装置を杭頭部に固定できる杭頭免震構造およびその構築方法を提供する。【解決手段】鋼管５の内側に配置した生コンクリートを、遠心力締固め成形して筒形状に固化させることで、外周面に鋼管５を一体化させた筒状の外殻コンクリート３を有して、鋼管５の上端部を外殻コンクリート３の上端面よりも上方に突出させた既製杭２を製造しておき、施工現場では、既製杭２を地盤Ｇに打設後、杭頭部の内空部分２ａを固化部材６によって埋めて平坦にするとともに外殻コンクリート３の上端面の上方位置に周方向に間隔をあけて複数本のアンカーボルト４を埋設して、杭頭部の上面に載置した免震装置１０を複数本のアンカーボルト４を介して既製杭２に対して固定する。【選択図】図１
PILE HEAD ISOLATION STRUCTURE AND CONSTRUCTION METHOD THEREOF
To provide a pile head isolation structure capable of fixing a seismic isolation device with large outside diameter according to a pile diameter to the pile head while reducing the construction period by using a precast pile including a steel pipe covering the outer peripheral surface, and a construction method thereof.SOLUTION: A precast pile 2 that has a cylindrical outer shell concrete 3 integrated with a steel pipe 5 on the outer peripheral surface, the upper end of the steel pipe 5 being formed protruding upward from the upper end of the outer shell concrete 3 is manufactured in such manner that ready-mixed concrete placed inside the steel pipe 5 is hardened with a centrifugal force and solidified into a tubular shape. At the construction site, after the precast pile 2 is installed into the ground G, an inner space 2a of the pile head is filled with solidifying member 6 to be flat and a plurality of anchor bolts 4 are embedded in an upper portion of the upper end of the outer shell concrete 3 at intervals in the peripheral direction, and a seismic isolation device 10 placed on the upper face of the pile head is fixed to the precast pile 2 via the plurality of anchor bolts 4.SELECTED DRAWING: Figure 1
【課題】外周面を覆う鋼管を備えた既製杭を用いて施工工期を短縮しつつ、杭径に応じた外径サイズの大きい免震装置を杭頭部に固定できる杭頭免震構造およびその構築方法を提供する。【解決手段】鋼管５の内側に配置した生コンクリートを、遠心力締固め成形して筒形状に固化させることで、外周面に鋼管５を一体化させた筒状の外殻コンクリート３を有して、鋼管５の上端部を外殻コンクリート３の上端面よりも上方に突出させた既製杭２を製造しておき、施工現場では、既製杭２を地盤Ｇに打設後、杭頭部の内空部分２ａを固化部材６によって埋めて平坦にするとともに外殻コンクリート３の上端面の上方位置に周方向に間隔をあけて複数本のアンカーボルト４を埋設して、杭頭部の上面に載置した免震装置１０を複数本のアンカーボルト４を介して既製杭２に対して固定する。【選択図】図１
PILE HEAD ISOLATION STRUCTURE AND CONSTRUCTION METHOD THEREOF
杭頭免震構造およびその構築方法
MURATA TETSUO (author) / SUDO KATSUYA (author) / TSUCHIDA TAKAAKI (author) / HAYASHI HARUKA (author) / SAKAGUCHI TOMOYA (author) / MORI KIYOTAKA (author) / IIZUKA SHINICHI (author) / YAMAZAKI YASUO (author) / OTA YUSUKE (author) / NAKAZAWA MAKOTO (author)
2019-06-24
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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