Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
GROUND IMPROVEMENT METHOD BY COMPACTION
To provide a ground improvement method allowing ground improvement work efficiency to be improved and construction cost for ground improvement to be reduced while reducing side displacement generated in the ground upon construction of a compacted sand pile for the ground improvement.SOLUTION: A ground improvement method by compaction comprises: a penetration step of penetrating a casing pipe 3 to a specific depth in the ground; a discharging step of pulling out the penetrated casing pipe 3 by a specific length and discharging sand material S; and a driving-back step of driving back the sand material S discharged through penetration of the casing pipe 3 to the specific length. The discharging step and the driving-back step are sequentially repeat upward to construct a compacted sand pile T in the ground. In the driving-back step, the casing pipe 3 is rotated at rotation speed R in a range from 10 rpm and 20 rpm as well as the casing pipe 3 is made to penetrate at penetration speed P in a range from 0.5 m/min to 3.0 m/min therein.SELECTED DRAWING: Figure 3
【課題】地盤改良において締固め砂杭を造成するときに地盤中に発生する側方変位を小さくしつつ、この地盤改良の作業効率の向上をはかるとともに、地盤改良の工費を安価にする。【解決手段】ケーシングパイプ３を地盤中の所定深度まで貫入する貫入工程と、貫入したケーシングパイプ３を所定の長さ引抜くとともに砂材料Ｓを排出する排出工程と、ケーシングパイプ３を所定の長さ貫入して排出した砂材料Ｓを打ち戻す打ち戻し工程を有し、排出工程と打ち戻し工程を上方に向かって順次繰り返して、地盤中に締固め砂杭Ｔを造成する締固め地盤改良方法であって、打ち戻し工程では、ケーシングパイプ３を１０ｒｐｍから２０ｒｐｍの範囲の回転速度Ｒで回転するとともに、ケーシングパイプ３を０．５ｍ／ｍｉｎから３．０ｍ／ｍｉｎの範囲の貫入速度Ｐで貫入する。【選択図】図３
GROUND IMPROVEMENT METHOD BY COMPACTION
To provide a ground improvement method allowing ground improvement work efficiency to be improved and construction cost for ground improvement to be reduced while reducing side displacement generated in the ground upon construction of a compacted sand pile for the ground improvement.SOLUTION: A ground improvement method by compaction comprises: a penetration step of penetrating a casing pipe 3 to a specific depth in the ground; a discharging step of pulling out the penetrated casing pipe 3 by a specific length and discharging sand material S; and a driving-back step of driving back the sand material S discharged through penetration of the casing pipe 3 to the specific length. The discharging step and the driving-back step are sequentially repeat upward to construct a compacted sand pile T in the ground. In the driving-back step, the casing pipe 3 is rotated at rotation speed R in a range from 10 rpm and 20 rpm as well as the casing pipe 3 is made to penetrate at penetration speed P in a range from 0.5 m/min to 3.0 m/min therein.SELECTED DRAWING: Figure 3
【課題】地盤改良において締固め砂杭を造成するときに地盤中に発生する側方変位を小さくしつつ、この地盤改良の作業効率の向上をはかるとともに、地盤改良の工費を安価にする。【解決手段】ケーシングパイプ３を地盤中の所定深度まで貫入する貫入工程と、貫入したケーシングパイプ３を所定の長さ引抜くとともに砂材料Ｓを排出する排出工程と、ケーシングパイプ３を所定の長さ貫入して排出した砂材料Ｓを打ち戻す打ち戻し工程を有し、排出工程と打ち戻し工程を上方に向かって順次繰り返して、地盤中に締固め砂杭Ｔを造成する締固め地盤改良方法であって、打ち戻し工程では、ケーシングパイプ３を１０ｒｐｍから２０ｒｐｍの範囲の回転速度Ｒで回転するとともに、ケーシングパイプ３を０．５ｍ／ｍｉｎから３．０ｍ／ｍｉｎの範囲の貫入速度Ｐで貫入する。【選択図】図３
GROUND IMPROVEMENT METHOD BY COMPACTION
締固め地盤改良方法
YABE HIROSHI (Autor:in) / NAGAISHI MASAHIRO (Autor:in)
31.07.2023
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
GROUND UPTAKE COMPACTION METHOD AND GROUND IMPROVEMENT BODY
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