A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WEAK GROUND IMPROVEMENT METHOD
PROBLEM TO BE SOLVED: To provide a weak ground improvement method capable of providing a highly effective improvement.SOLUTION: A weak ground improvement method comprises: a penetration process to penetrate a hollow tube until reaching a predetermined depth; and an establishment process to pull out the hollow tube for an adequate length after the penetration process and sequentially repeat pulling out for draining sand pile material in the hollow tube to a space made after the pulling out and pushing back the hollow tube until reaching the ground surface in order to install multiple compaction sand piles in the weak ground. The penetration process and the establishment process are carried out so that measurement points 4, 4a are set near the sand pile to be installed and the maximum excess pore water pressure at the measurement points in the establishment process is smaller than that at the measurement points in the penetration process.SELECTED DRAWING: Figure 1
【課題】高い改良効果が得られる軟弱地盤の改良方法を提供する。【解決手段】中空管を所定の深度まで貫入する貫入工程と、該貫入工程後、中空管を適宜の長さ引き抜き、該引き抜き跡に中空管内の砂杭材料を排出する引き抜きと、中空管の打ち戻しを順次、地表に至るまで繰り返す造成工程とを行い軟弱地盤中に複数の締固め砂杭を打設する工法において、打設しようとする砂杭の近傍に測定点４、４aを定め、造成工程における該測定点の最大過剰間隙水圧が、貫入工程における該測定点の最大過剰間隙水圧より小となるように、貫入工程と造成工程を行う。【選択図】図１
WEAK GROUND IMPROVEMENT METHOD
PROBLEM TO BE SOLVED: To provide a weak ground improvement method capable of providing a highly effective improvement.SOLUTION: A weak ground improvement method comprises: a penetration process to penetrate a hollow tube until reaching a predetermined depth; and an establishment process to pull out the hollow tube for an adequate length after the penetration process and sequentially repeat pulling out for draining sand pile material in the hollow tube to a space made after the pulling out and pushing back the hollow tube until reaching the ground surface in order to install multiple compaction sand piles in the weak ground. The penetration process and the establishment process are carried out so that measurement points 4, 4a are set near the sand pile to be installed and the maximum excess pore water pressure at the measurement points in the establishment process is smaller than that at the measurement points in the penetration process.SELECTED DRAWING: Figure 1
【課題】高い改良効果が得られる軟弱地盤の改良方法を提供する。【解決手段】中空管を所定の深度まで貫入する貫入工程と、該貫入工程後、中空管を適宜の長さ引き抜き、該引き抜き跡に中空管内の砂杭材料を排出する引き抜きと、中空管の打ち戻しを順次、地表に至るまで繰り返す造成工程とを行い軟弱地盤中に複数の締固め砂杭を打設する工法において、打設しようとする砂杭の近傍に測定点４、４aを定め、造成工程における該測定点の最大過剰間隙水圧が、貫入工程における該測定点の最大過剰間隙水圧より小となるように、貫入工程と造成工程を行う。【選択図】図１
WEAK GROUND IMPROVEMENT METHOD
軟弱地盤の改良方法
HARADA KENJI (author) / YAMASHITA YUJI (author)
2017-05-18
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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