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 the establishment process requires three times or longer time than that required for the penetration process when installing one sand pile.SELECTED DRAWING: Figure 2
【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、１本の砂杭の打設において、造成工程に要する時間が、貫入工程に要する時間の３倍以上となるように、貫入工程と造成工程を行う。【選択図】図２
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 the establishment process requires three times or longer time than that required for the penetration process when installing one sand pile.SELECTED DRAWING: Figure 2
【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、１本の砂杭の打設において、造成工程に要する時間が、貫入工程に要する時間の３倍以上となるように、貫入工程と造成工程を行う。【選択図】図２
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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