Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD AND DEVICE FOR ESTABLISHING GROUND IMPROVEMENT PILE
PROBLEM TO BE SOLVED: To provide a method and a device for establishing a ground improvement pile capable of efficiently and certainly compacting a filling material, laterally expanding the filling material and compacting surrounding ground.SOLUTION: A double pipe casing 1 comprising an outer pipe 2 and an inner pipe 3 is supported by a rotary device 4 capable of moving up and down along a leader 6 of a construction machine 5. The double pipe casing 1 is inserted to a prescribed depth in the ground while the outer pipe 2 is rotated by a rotating mechanism in the rotary device 4. While the double pipe casing 1 is pulled out by a prescribed length, a filling material B in the inner pipe 3 is discharged into the ground. Then, the double pipe casing 1 is simultaneously pressed down in a state where a tip of the inner pipe 3 is kept at a position higher than a tip of the outer pipe 2 by approximately 10 to 30 cm to laterally expand the filling material B, compact a surrounding ground and the filling material through an openable and closable cover 7 attached to the tip of the inner pipe 3 and establish a pole with enlarged diameter. Subsequently a ground improvement pile in which consecutive poles with enlarged diameter are aligned is established by repeating pulling out and pressing down the double pipe casing 1.
【課題】中詰材の締固め、側方への拡張、更に周辺地盤の締固めを効率的かつ確実に行うことができる地盤改良杭の造成方法及びその造成装置を提供する。【解決手段】外管2と内管3とからなる二重管ケーシング1を施工機械5のリーダ6に沿って昇降可能な回転装置4に支持する。外管2を回転装置4内の回転機構により回転させながら二重管ケーシング1を地盤中に所定深度まで貫入する。次に、二重管ケーシング1を所定長さだけ引き抜き、その間に内管3内の中詰材イを地盤中に排出する。その後、内管3の先端を外管2の先端より10〜30cm程度上方の位置に保った状態で二重管ケーシング1を同時に押し下げることにより、内管3の先端に取り付けられた開閉自在蓋7を介して、中詰材イを側方へ拡張しながら周辺地盤と中詰材を締め固めて拡径柱を造成する。以降、二重管ケーシング1の引抜きと押下げを繰り返して拡径柱が連続する地盤改良杭を造成する。【選択図】図１
METHOD AND DEVICE FOR ESTABLISHING GROUND IMPROVEMENT PILE
PROBLEM TO BE SOLVED: To provide a method and a device for establishing a ground improvement pile capable of efficiently and certainly compacting a filling material, laterally expanding the filling material and compacting surrounding ground.SOLUTION: A double pipe casing 1 comprising an outer pipe 2 and an inner pipe 3 is supported by a rotary device 4 capable of moving up and down along a leader 6 of a construction machine 5. The double pipe casing 1 is inserted to a prescribed depth in the ground while the outer pipe 2 is rotated by a rotating mechanism in the rotary device 4. While the double pipe casing 1 is pulled out by a prescribed length, a filling material B in the inner pipe 3 is discharged into the ground. Then, the double pipe casing 1 is simultaneously pressed down in a state where a tip of the inner pipe 3 is kept at a position higher than a tip of the outer pipe 2 by approximately 10 to 30 cm to laterally expand the filling material B, compact a surrounding ground and the filling material through an openable and closable cover 7 attached to the tip of the inner pipe 3 and establish a pole with enlarged diameter. Subsequently a ground improvement pile in which consecutive poles with enlarged diameter are aligned is established by repeating pulling out and pressing down the double pipe casing 1.
【課題】中詰材の締固め、側方への拡張、更に周辺地盤の締固めを効率的かつ確実に行うことができる地盤改良杭の造成方法及びその造成装置を提供する。【解決手段】外管2と内管3とからなる二重管ケーシング1を施工機械5のリーダ6に沿って昇降可能な回転装置4に支持する。外管2を回転装置4内の回転機構により回転させながら二重管ケーシング1を地盤中に所定深度まで貫入する。次に、二重管ケーシング1を所定長さだけ引き抜き、その間に内管3内の中詰材イを地盤中に排出する。その後、内管3の先端を外管2の先端より10〜30cm程度上方の位置に保った状態で二重管ケーシング1を同時に押し下げることにより、内管3の先端に取り付けられた開閉自在蓋7を介して、中詰材イを側方へ拡張しながら周辺地盤と中詰材を締め固めて拡径柱を造成する。以降、二重管ケーシング1の引抜きと押下げを繰り返して拡径柱が連続する地盤改良杭を造成する。【選択図】図１
METHOD AND DEVICE FOR ESTABLISHING GROUND IMPROVEMENT PILE
地盤改良杭の造成方法及び地盤改良杭の造成装置
ITAGAKI KOZO (Autor:in) / MATSUSHIMA HITOBUMI (Autor:in) / SASAKI TAKANORI (Autor:in)
24.12.2015
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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