A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND IMPROVEMENT METHOD BY CHEMICAL INJECTION, AND GROUND IMPROVEMENT OPTIMIZATION METHOD
PROBLEM TO BE SOLVED: To provide a ground improvement method by chemical injection and a ground improvement optimization method that enable infiltration injection while suppressing a rise in silica concentration in the chemical, at the same time suppressing a rise in costs, for minimizing a damage caused by ground liquefaction at a time of a great earthquake.SOLUTION: In the ground improvement method by chemical injection, a targeted consolidation strength of a ground to be improved is set so that an excess pore water pressure ratio at a time of earthquake equals to or is less than a limit excess pore water pressure ratio. A certain upper limit value is known for the targeted consolidation strength, and a chemical formulated to attain the set consolidation strength is injected into the ground to be improved.SELECTED DRAWING: Figure 2
【課題】大地震時における地盤の液状化による被害を最小限に抑えるために、薬液のシリカ濃度の増加を抑制しつつ浸透注入を可能にし、あわせてコストの上昇を抑制する薬液注入による地盤改良方法および地盤改良最適化方法を提供する。【解決手段】この薬液注入による地盤改良方法は、改良対象地盤の目標とする固結強度を地震時の過剰間隙水圧比が限界過剰間隙水圧比以下になるように設定し、前記目標とする固結強度には一定の上限値が存在し、前記設定された固結強度となるようにした薬液を前記改良対象地盤に注入する。【選択図】図２
GROUND IMPROVEMENT METHOD BY CHEMICAL INJECTION, AND GROUND IMPROVEMENT OPTIMIZATION METHOD
PROBLEM TO BE SOLVED: To provide a ground improvement method by chemical injection and a ground improvement optimization method that enable infiltration injection while suppressing a rise in silica concentration in the chemical, at the same time suppressing a rise in costs, for minimizing a damage caused by ground liquefaction at a time of a great earthquake.SOLUTION: In the ground improvement method by chemical injection, a targeted consolidation strength of a ground to be improved is set so that an excess pore water pressure ratio at a time of earthquake equals to or is less than a limit excess pore water pressure ratio. A certain upper limit value is known for the targeted consolidation strength, and a chemical formulated to attain the set consolidation strength is injected into the ground to be improved.SELECTED DRAWING: Figure 2
【課題】大地震時における地盤の液状化による被害を最小限に抑えるために、薬液のシリカ濃度の増加を抑制しつつ浸透注入を可能にし、あわせてコストの上昇を抑制する薬液注入による地盤改良方法および地盤改良最適化方法を提供する。【解決手段】この薬液注入による地盤改良方法は、改良対象地盤の目標とする固結強度を地震時の過剰間隙水圧比が限界過剰間隙水圧比以下になるように設定し、前記目標とする固結強度には一定の上限値が存在し、前記設定された固結強度となるようにした薬液を前記改良対象地盤に注入する。【選択図】図２
GROUND IMPROVEMENT METHOD BY CHEMICAL INJECTION, AND GROUND IMPROVEMENT OPTIMIZATION METHOD
薬液注入による地盤改良方法および地盤改良最適化方法
HAYASHI KENTARO (author) / AKIMOTO TEPPEI (author) / YAMAZAKI HIROYUKI (author) / ZEN KOUKI (author)
2016-12-28
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
GROUND IMPROVEMENT METHOD BY INJECTING CHEMICAL LIQUID AND GROUND IMPROVEMENT OPTIMIZATION METHOD
| European Patent Office | 2017
Ground improvement using electro-chemical injection
| TIBKAT | 2007