A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONSTRUCTION METHOD OF GROUND FOR LIQUEFACTION COUNTERMEASURE
To provide a construction method of the ground for liquefaction countermeasure allowing the liquefaction countermeasure to be done without deteriorating rigidity of the ground and excellent in workability.SOLUTION: A construction method of the ground for liquefaction countermeasure is configured to bury a plurality of drain members 1 placed apart from each other in a lateral direction in the ground for the liquefaction countermeasure. The drain member is provided with: a perforated pipe placed in the center; a drain sheet 3 wounded around the perforated pipe 2; and an outer periphery filter in a cylindrical shape placed on an outer periphery of the wounded drain sheet. And, in a process of drawing the drain member from a lower end opening of a mandrel 61, a lower end of a wire rope 63 passing through an inner cavity of the mandrel is connected to an end part of the perforated pipe and the drain member in a bent state is drawn into from a gap between the ground and the lower end opening by winding up the wire rope.SELECTED DRAWING: Figure 6
【課題】地盤の剛性を低下させることなく液状化対策が行えるうえに、施工性に優れた液状化対策地盤の施工方法を提供する。【解決手段】液状化対策のために横方向に間隔を置いて地盤Ｇに複数のドレーン材１が埋設される液状化対策地盤の施工方法である。ドレーン材は、中心に配置される有孔管２と、有孔管の周囲に巻き付けられる排水シート３と、巻き付けられる排水シートの外周に配置される円筒状の外周フィルタとを備えている。そして、ドレーン材をマンドレル６１の下端開口から引き込む工程では、マンドレルの内空に通されたワイヤロープ６３の下端を有孔管の端部に連結し、ワイヤロープを巻き上げることで地表と下端開口との隙間から撓んだ状態のドレーン材を引き込む。【選択図】図６
CONSTRUCTION METHOD OF GROUND FOR LIQUEFACTION COUNTERMEASURE
To provide a construction method of the ground for liquefaction countermeasure allowing the liquefaction countermeasure to be done without deteriorating rigidity of the ground and excellent in workability.SOLUTION: A construction method of the ground for liquefaction countermeasure is configured to bury a plurality of drain members 1 placed apart from each other in a lateral direction in the ground for the liquefaction countermeasure. The drain member is provided with: a perforated pipe placed in the center; a drain sheet 3 wounded around the perforated pipe 2; and an outer periphery filter in a cylindrical shape placed on an outer periphery of the wounded drain sheet. And, in a process of drawing the drain member from a lower end opening of a mandrel 61, a lower end of a wire rope 63 passing through an inner cavity of the mandrel is connected to an end part of the perforated pipe and the drain member in a bent state is drawn into from a gap between the ground and the lower end opening by winding up the wire rope.SELECTED DRAWING: Figure 6
【課題】地盤の剛性を低下させることなく液状化対策が行えるうえに、施工性に優れた液状化対策地盤の施工方法を提供する。【解決手段】液状化対策のために横方向に間隔を置いて地盤Ｇに複数のドレーン材１が埋設される液状化対策地盤の施工方法である。ドレーン材は、中心に配置される有孔管２と、有孔管の周囲に巻き付けられる排水シート３と、巻き付けられる排水シートの外周に配置される円筒状の外周フィルタとを備えている。そして、ドレーン材をマンドレル６１の下端開口から引き込む工程では、マンドレルの内空に通されたワイヤロープ６３の下端を有孔管の端部に連結し、ワイヤロープを巻き上げることで地表と下端開口との隙間から撓んだ状態のドレーン材を引き込む。【選択図】図６
CONSTRUCTION METHOD OF GROUND FOR LIQUEFACTION COUNTERMEASURE
液状化対策地盤の施工方法
SUZUKI HAJIME (author) / TANAKA TAKUYA (author) / MASUMURA YOSHIHIRO (author) / OKAMOTO MASAHIRO (author) / SANO YUSUKE (author)
2023-11-10
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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