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CONSTRUCTION METHOD OF FOUNDATION PILE WHOSE PILE HEAD IS REINFORCED, FOUNDATION PILE STRUCTURE WHOSE PILE HEAD IS REINFORCED
PROBLEM TO BE SOLVED: To provide a well-balanced foundation pile structure in which a precast pile can be designed with reduced pile head strength, by reinforcing a pile head part of a concrete precast pile by bearing horizontal force and the like according to an outer diameter and thickness of an outer short precast pile.SOLUTION: A foundation pile is constructed by: excavating an axis part 21 and a foot protection part 22 of a pile hole 20 with an excavation rod 31 (a), in a diameter corresponding to an outer diameter of an outer short precast pile 10 with projections 13; forming a foot protection liquid layer 43 and a pile periphery fixing liquid layer 42 by filling the pile hole 20 with cement milk, joining and successively lowering precast piles (concrete-based) 1A, 1B, 1C in the pile hole 20 and embedding the same as a precast pile 1 inside the pile hole 20 (b), (c); and embedding the outer short precast pile 10 (concrete-based) in the upper end of the pile hole 20 so as to cover an outer wall 2 side of the precast pile 1C, and solidifying the pile periphery fixing liquid layers 42, 42a, 42b and the foot protection liquid layer 43, thereby constructing a foundation pile 40 (d).
【課題】外短既製杭の外径及び肉厚に応じて水平力などを負担して、コンクリート系の既製杭の杭頭部の補強し、既製杭の杭頭強度を軽減した設計ができ、バランス良い基礎杭構造とする。【解決手段】突起１３付きの外短既製杭１０の外径に対応した径で、掘削ロッド３１で杭穴２０の軸部２１及び根固め部２２を掘削する（ａ）。セメントミルクを充填し根固め液層４３、杭周固定液層４２を形成した杭穴２０内に、既製杭（コンクリート系）１Ａ、１Ｂ、１Ｃを連結しながら順次下降して、既製杭１として杭穴２０内に埋設する（ｂ）（ｃ）。杭穴２０の上端部に、既製杭１Ｃの外壁２側に被せるように、外短既製杭（コンクリート系）１０を埋設して、杭周固定液層４２、４２ａ、４２ｂ及び根固め液層４３が固化したならば、基礎杭４０を構成する（ｄ）。【選択図】図１
CONSTRUCTION METHOD OF FOUNDATION PILE WHOSE PILE HEAD IS REINFORCED, FOUNDATION PILE STRUCTURE WHOSE PILE HEAD IS REINFORCED
PROBLEM TO BE SOLVED: To provide a well-balanced foundation pile structure in which a precast pile can be designed with reduced pile head strength, by reinforcing a pile head part of a concrete precast pile by bearing horizontal force and the like according to an outer diameter and thickness of an outer short precast pile.SOLUTION: A foundation pile is constructed by: excavating an axis part 21 and a foot protection part 22 of a pile hole 20 with an excavation rod 31 (a), in a diameter corresponding to an outer diameter of an outer short precast pile 10 with projections 13; forming a foot protection liquid layer 43 and a pile periphery fixing liquid layer 42 by filling the pile hole 20 with cement milk, joining and successively lowering precast piles (concrete-based) 1A, 1B, 1C in the pile hole 20 and embedding the same as a precast pile 1 inside the pile hole 20 (b), (c); and embedding the outer short precast pile 10 (concrete-based) in the upper end of the pile hole 20 so as to cover an outer wall 2 side of the precast pile 1C, and solidifying the pile periphery fixing liquid layers 42, 42a, 42b and the foot protection liquid layer 43, thereby constructing a foundation pile 40 (d).
【課題】外短既製杭の外径及び肉厚に応じて水平力などを負担して、コンクリート系の既製杭の杭頭部の補強し、既製杭の杭頭強度を軽減した設計ができ、バランス良い基礎杭構造とする。【解決手段】突起１３付きの外短既製杭１０の外径に対応した径で、掘削ロッド３１で杭穴２０の軸部２１及び根固め部２２を掘削する（ａ）。セメントミルクを充填し根固め液層４３、杭周固定液層４２を形成した杭穴２０内に、既製杭（コンクリート系）１Ａ、１Ｂ、１Ｃを連結しながら順次下降して、既製杭１として杭穴２０内に埋設する（ｂ）（ｃ）。杭穴２０の上端部に、既製杭１Ｃの外壁２側に被せるように、外短既製杭（コンクリート系）１０を埋設して、杭周固定液層４２、４２ａ、４２ｂ及び根固め液層４３が固化したならば、基礎杭４０を構成する（ｄ）。【選択図】図１
CONSTRUCTION METHOD OF FOUNDATION PILE WHOSE PILE HEAD IS REINFORCED, FOUNDATION PILE STRUCTURE WHOSE PILE HEAD IS REINFORCED
杭頭を補強する基礎杭の構築方法、杭頭を補強した基礎杭構造
KATO YOICHI (author) / MATSUMOTO YUKINORI (author)
2015-12-07
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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