Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CONSTRUCTION METHOD OF DRAIN FOR LIQUEFACTION COUNTERMEASURE
PROBLEM TO BE SOLVED: To provide a construction method of a drain for a liquefaction countermeasure, highly accurately constructible in an optional diameter, and constructible even in the narrow ground, by minimally restraining looseness of the ground.SOLUTION: A construction method comprises a hole drilling process of boring a drain hole 3 of the predetermined length of reaching a liquefaction layer by successively adding a casing 2a by excavating the ground G by rotating a casing 2 around the axis O1 by a hole drilling machine 1, a sediment discharge-removal process of discharging-removing sediment in the casing 2 and a drain material filling process of inputting a predetermined quantity of granular material 8 being a drain material in the casing 2, filling by sending the predetermined quantity of granular material 8 into the tip part side of the drain hole 3 by an auger 9 inserted-arranged into the casing 2 and separating-removing by extracting the casing 2 and the auger 9 equivalent to the length corresponding to the filling length of the predetermined quantity of granular material 8.
【課題】地盤の緩みを最小限に抑え、任意の径で高精度に施工できるとともに、狭隘地であっても施工を可能にする液状化対策用ドレーンの構築方法を提供する。【解決手段】削孔機１でケーシング２を軸線Ｏ１周りに回転させて地盤Ｇを掘削し、順次ケーシング２ａを継ぎ足して液状化層に達する所定長さのドレーン孔３を穿設する削孔工程と、ケーシング２内の土砂を排出除去する土砂排出除去工程と、ドレーン材である所定量の粒状物８をケーシング２内に投入するとともに、ケーシング２内に挿入配置したオーガー９によって所定量の粒状物８をドレーン孔３の先端部側に送り込んで充填させ、且つ所定量の粒状物８の充填長に応じた長さ分のケーシング２及びオーガー９を引き抜いて分離撤去するドレーン材充填工程とを備える。【選択図】図７
CONSTRUCTION METHOD OF DRAIN FOR LIQUEFACTION COUNTERMEASURE
PROBLEM TO BE SOLVED: To provide a construction method of a drain for a liquefaction countermeasure, highly accurately constructible in an optional diameter, and constructible even in the narrow ground, by minimally restraining looseness of the ground.SOLUTION: A construction method comprises a hole drilling process of boring a drain hole 3 of the predetermined length of reaching a liquefaction layer by successively adding a casing 2a by excavating the ground G by rotating a casing 2 around the axis O1 by a hole drilling machine 1, a sediment discharge-removal process of discharging-removing sediment in the casing 2 and a drain material filling process of inputting a predetermined quantity of granular material 8 being a drain material in the casing 2, filling by sending the predetermined quantity of granular material 8 into the tip part side of the drain hole 3 by an auger 9 inserted-arranged into the casing 2 and separating-removing by extracting the casing 2 and the auger 9 equivalent to the length corresponding to the filling length of the predetermined quantity of granular material 8.
【課題】地盤の緩みを最小限に抑え、任意の径で高精度に施工できるとともに、狭隘地であっても施工を可能にする液状化対策用ドレーンの構築方法を提供する。【解決手段】削孔機１でケーシング２を軸線Ｏ１周りに回転させて地盤Ｇを掘削し、順次ケーシング２ａを継ぎ足して液状化層に達する所定長さのドレーン孔３を穿設する削孔工程と、ケーシング２内の土砂を排出除去する土砂排出除去工程と、ドレーン材である所定量の粒状物８をケーシング２内に投入するとともに、ケーシング２内に挿入配置したオーガー９によって所定量の粒状物８をドレーン孔３の先端部側に送り込んで充填させ、且つ所定量の粒状物８の充填長に応じた長さ分のケーシング２及びオーガー９を引き抜いて分離撤去するドレーン材充填工程とを備える。【選択図】図７
CONSTRUCTION METHOD OF DRAIN FOR LIQUEFACTION COUNTERMEASURE
液状化対策用ドレーンの構築方法
MANO HIDEYUKI (Autor:in)
26.11.2015
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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