A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
COMPACTION GROUND IMPROVEMENT METHOD
To provide a compaction ground improvement method for which: lateral deformation that occurs during ground improvement is reduced to prevent negative effects on an existing structure; work for removing bumps is not required because bumps on the ground surface are prevented; and the construction costs are reduced.SOLUTION: The compaction ground improvement method that forms a compaction improvement area in the ground includes: a casing pipe insertion step for inserting a casing pipe 3 up to a predetermined depth in the ground while rotating the casing pipe 3 in the position direction, and attaching a screw blade 7 on the outside of the casing pipe 3 and a compaction device on the lower part; a casing pipe removal step for removing the casing pipe 3 by a predetermined length; a sediment filling step for filling a space with sediments, the space being made by reversely rotating the casing pipe 3 and removing the casing pipe 3 by using the screw blade 7; and a sediment compaction step for compacting the filled sediments by using the compaction device. After the casing pipe insertion step, repeating steps in the order of the casing pipe removal step, the sediment filling step, and the sediment compaction step toward above. This results in forming the compaction improvement area in the ground.SELECTED DRAWING: Figure 8
【課題】地盤改良時に発生する側方変位を低減し、既設構造物に悪影響が及ぶのを防止し、地表面の盛り上がりを防止して盛り上がりの除去作業を不要とし、工費を削減した締固め地盤改良工法を提供する。【解決手段】地盤中に締固め改良域を形成する締固め地盤改良方法であり、外周にスクリュー羽根７を取り付け、かつ下部に締固め装置を取り付けたケーシングパイプ３を正回転しながら地盤中の所定深度まで貫入するケーシングパイプ貫入工程と、ケーシングパイプ３を所定の長さ引抜くケーシングパイプ引抜き工程と、ケーシングパイプ３を逆回転してスクリュー羽根７でケーシングパイプ３を引抜いてできた空洞に土砂を充填する土砂充填工程と、充填した土砂を締固め装置で締固める土砂締固め工程とを有し、ケーシングパイプ貫入工程後にケーシングパイプ引抜き工程と土砂充填工程と土砂締固め工程とを上方に向かって順次繰り返して地盤中に締固め改良域を形成する。【選択図】図８
COMPACTION GROUND IMPROVEMENT METHOD
To provide a compaction ground improvement method for which: lateral deformation that occurs during ground improvement is reduced to prevent negative effects on an existing structure; work for removing bumps is not required because bumps on the ground surface are prevented; and the construction costs are reduced.SOLUTION: The compaction ground improvement method that forms a compaction improvement area in the ground includes: a casing pipe insertion step for inserting a casing pipe 3 up to a predetermined depth in the ground while rotating the casing pipe 3 in the position direction, and attaching a screw blade 7 on the outside of the casing pipe 3 and a compaction device on the lower part; a casing pipe removal step for removing the casing pipe 3 by a predetermined length; a sediment filling step for filling a space with sediments, the space being made by reversely rotating the casing pipe 3 and removing the casing pipe 3 by using the screw blade 7; and a sediment compaction step for compacting the filled sediments by using the compaction device. After the casing pipe insertion step, repeating steps in the order of the casing pipe removal step, the sediment filling step, and the sediment compaction step toward above. This results in forming the compaction improvement area in the ground.SELECTED DRAWING: Figure 8
【課題】地盤改良時に発生する側方変位を低減し、既設構造物に悪影響が及ぶのを防止し、地表面の盛り上がりを防止して盛り上がりの除去作業を不要とし、工費を削減した締固め地盤改良工法を提供する。【解決手段】地盤中に締固め改良域を形成する締固め地盤改良方法であり、外周にスクリュー羽根７を取り付け、かつ下部に締固め装置を取り付けたケーシングパイプ３を正回転しながら地盤中の所定深度まで貫入するケーシングパイプ貫入工程と、ケーシングパイプ３を所定の長さ引抜くケーシングパイプ引抜き工程と、ケーシングパイプ３を逆回転してスクリュー羽根７でケーシングパイプ３を引抜いてできた空洞に土砂を充填する土砂充填工程と、充填した土砂を締固め装置で締固める土砂締固め工程とを有し、ケーシングパイプ貫入工程後にケーシングパイプ引抜き工程と土砂充填工程と土砂締固め工程とを上方に向かって順次繰り返して地盤中に締固め改良域を形成する。【選択図】図８
COMPACTION GROUND IMPROVEMENT METHOD
締固め地盤改良方法
FUKADA HISASHI (author) / IMAKIRE KENICHI (author)
2020-10-08
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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