A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PULLING OUT CONSTRUCTION METHOD FOR EXISTING PILE
To provide a pulling out construction method for an existing pile which prevents deterioration of strength in the ground around the existing pile pull-out trace.SOLUTION: A construction method of pulling out an existing pile includes steps of: erecting an outer peripheral casing 13 in an outer peripheral ground of an existing pile 10; erecting an inner peripheral casing 14 in which an end of a wire rope 16 for pulling out is wound around the tip outer periphery and a ring part 16a is formed, between the outer peripheral casing 13 and the existing pile 10; pulling out the inner peripheral casing 14 after winding the ring part of the wire rope 16 around the tip outer periphery of the existing pile 10 so as to be put there; pulling out the existing pile 10 by raising the wire rope 16; expanding an agitation blade 20 by inserting a spiral auger 18 into the outer peripheral casing 13, and allowing a tip head part 19 to protrude from the tip of the outer peripheral casing 13; and raising the spiral auger 18 and the outer peripheral casing 13 while rotating the spiral auger 18 and pouring out a solidification material from the tip head part 19.SELECTED DRAWING: Figure 1
【課題】既存杭抜き跡周辺の地盤の強度低下を防止した、既存杭の引抜き工法を提供する。【解決手段】既存杭１０の外周地盤に外周ケーシング１３を建て込む工程と、外周ケーシング１３と既存杭１０との間に、先端部外周に引抜き用のワイヤーロープ１６の端部が巻き付けられて輪部１６ａが形成された内周ケーシング１４を建て込む工程と、ワイヤーロープ１６の輪部を既存杭１０の先端部外周に預けるようにして巻き付けた後、内周ケーシング１４を引き抜く工程と、ワイヤーロープ１６を引き上げることにより既存杭１０を引き抜く工程と、外周ケーシング１３の内部に、スパイラルオーガー１８を挿入し、先端ヘッド部１９を外周ケーシング１３の先端から突出させて撹拌翼２０を拡大させる工程と、スパイラルオーガー１８を回転させるとともに、先端ヘッド部１９から固化材を注出しながら、スパイラルオーガー１８及び外周ケーシング１３を引き上げる工程とを備える。【選択図】図１
PULLING OUT CONSTRUCTION METHOD FOR EXISTING PILE
To provide a pulling out construction method for an existing pile which prevents deterioration of strength in the ground around the existing pile pull-out trace.SOLUTION: A construction method of pulling out an existing pile includes steps of: erecting an outer peripheral casing 13 in an outer peripheral ground of an existing pile 10; erecting an inner peripheral casing 14 in which an end of a wire rope 16 for pulling out is wound around the tip outer periphery and a ring part 16a is formed, between the outer peripheral casing 13 and the existing pile 10; pulling out the inner peripheral casing 14 after winding the ring part of the wire rope 16 around the tip outer periphery of the existing pile 10 so as to be put there; pulling out the existing pile 10 by raising the wire rope 16; expanding an agitation blade 20 by inserting a spiral auger 18 into the outer peripheral casing 13, and allowing a tip head part 19 to protrude from the tip of the outer peripheral casing 13; and raising the spiral auger 18 and the outer peripheral casing 13 while rotating the spiral auger 18 and pouring out a solidification material from the tip head part 19.SELECTED DRAWING: Figure 1
【課題】既存杭抜き跡周辺の地盤の強度低下を防止した、既存杭の引抜き工法を提供する。【解決手段】既存杭１０の外周地盤に外周ケーシング１３を建て込む工程と、外周ケーシング１３と既存杭１０との間に、先端部外周に引抜き用のワイヤーロープ１６の端部が巻き付けられて輪部１６ａが形成された内周ケーシング１４を建て込む工程と、ワイヤーロープ１６の輪部を既存杭１０の先端部外周に預けるようにして巻き付けた後、内周ケーシング１４を引き抜く工程と、ワイヤーロープ１６を引き上げることにより既存杭１０を引き抜く工程と、外周ケーシング１３の内部に、スパイラルオーガー１８を挿入し、先端ヘッド部１９を外周ケーシング１３の先端から突出させて撹拌翼２０を拡大させる工程と、スパイラルオーガー１８を回転させるとともに、先端ヘッド部１９から固化材を注出しながら、スパイラルオーガー１８及び外周ケーシング１３を引き上げる工程とを備える。【選択図】図１
PULLING OUT CONSTRUCTION METHOD FOR EXISTING PILE
既存杭の引抜き工法
KOMAZAWA TATSUYA (author)
2022-05-30
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen