A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
IMPROVEMENT METHOD OF SOFT GROUND
To provide an improvement method of the soft ground allowing construction to be more easily carried out through combination of horizontal drain members and vertical members.SOLUTION: This method comprises steps of: installing vertical drain members in the soft ground; and installing horizontal drain members in the soft ground by connecting upper end parts of the installed vertical drain members thereto. A core material of the vertical drain member is a rigid one formed using material composed of polylactic acid and aromatic polyester. A surface of the rigid core material is coated with span bond non-woven fabric composed of polylactic acid fiber. A core material of the horizontal drain member is a flexible one formed using material composed of polylactic acid and aliphatic polyester. A surface of the flexible core material is coated with span bond non-woven fabric composed of polylactic acid fiber. A shape of the flexible core member is configured to arrange truncated conical protrusions 3 in a zigzag pattern in an installation direction.SELECTED DRAWING: Figure 2
【課題】水平ドレーン材と鉛直ドレーン材を組み合わせた、より容易に施工できる軟弱地盤の改良工法を提供する。【解決手段】この工法は、軟弱地盤に鉛直ドレーン材を打設する工程と、打設された鉛直ドレーン材の上端部と接続させて軟弱地盤上に水平ドレーン材を敷設する工程とよりなる。鉛直ドレーン材の芯材は、ポリ乳酸と芳香族ポリエステルよりなる材料で成形された剛直なものである。この剛直な芯材の表面は、ポリ乳酸繊維で構成されてなるスパンボンド不織布で被覆されている。水平ドレーン材の芯材は、ポリ乳酸と脂肪族ポリエステルよりなる材料で成形された柔軟なものである。この柔軟な芯材の表面は、ポリ乳酸繊維で構成されてなるスパンボンド不織布で被覆されている。柔軟な芯材の形状は、截頭円錐状の凸部３が敷設方向に千鳥状に配置されてなる。【選択図】図２
IMPROVEMENT METHOD OF SOFT GROUND
To provide an improvement method of the soft ground allowing construction to be more easily carried out through combination of horizontal drain members and vertical members.SOLUTION: This method comprises steps of: installing vertical drain members in the soft ground; and installing horizontal drain members in the soft ground by connecting upper end parts of the installed vertical drain members thereto. A core material of the vertical drain member is a rigid one formed using material composed of polylactic acid and aromatic polyester. A surface of the rigid core material is coated with span bond non-woven fabric composed of polylactic acid fiber. A core material of the horizontal drain member is a flexible one formed using material composed of polylactic acid and aliphatic polyester. A surface of the flexible core material is coated with span bond non-woven fabric composed of polylactic acid fiber. A shape of the flexible core member is configured to arrange truncated conical protrusions 3 in a zigzag pattern in an installation direction.SELECTED DRAWING: Figure 2
【課題】水平ドレーン材と鉛直ドレーン材を組み合わせた、より容易に施工できる軟弱地盤の改良工法を提供する。【解決手段】この工法は、軟弱地盤に鉛直ドレーン材を打設する工程と、打設された鉛直ドレーン材の上端部と接続させて軟弱地盤上に水平ドレーン材を敷設する工程とよりなる。鉛直ドレーン材の芯材は、ポリ乳酸と芳香族ポリエステルよりなる材料で成形された剛直なものである。この剛直な芯材の表面は、ポリ乳酸繊維で構成されてなるスパンボンド不織布で被覆されている。水平ドレーン材の芯材は、ポリ乳酸と脂肪族ポリエステルよりなる材料で成形された柔軟なものである。この柔軟な芯材の表面は、ポリ乳酸繊維で構成されてなるスパンボンド不織布で被覆されている。柔軟な芯材の形状は、截頭円錐状の凸部３が敷設方向に千鳥状に配置されてなる。【選択図】図２
IMPROVEMENT METHOD OF SOFT GROUND
軟弱地盤の改良工法
CHIKAMI KUNIO (author) / KAMINOMON HIDEAKI (author)
2021-08-10
Patent
Electronic Resource
Japanese
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