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A platform for research: civil engineering, architecture and urbanism
LIQUEFACTION COUNTERMEASURE CONSTRUCTION METHOD
PROBLEM TO BE SOLVED: To provide a liquefaction countermeasure construction method capable of increasing a liquefaction strength by desaturating an object ground for liquefaction countermeasure, and capable of continuously maintaining the unsaturated state effective even in the ground near the ground surface by holding air bubbles of an amount (degree of saturation of approx. 90-95%) required for continuously ensuring the unsaturated state of the object ground.SOLUTION: In a construction method, the object ground for liquefaction countermeasure in a range of predetermined depth from the upper face of a liquefaction layer 1 under the ground surface is divided into two layers 11 and 12, many air bubbles are created and held in the lower layer 11 to desaturate the lower layer 11, and the upper layer 12 is solidified by injecting a chemical being penetrating into the upper layer 12.SELECTED DRAWING: Figure 1
【課題】液状化対策の対象地盤を不飽和化して、液状化強度を増大させる。また、この対象地盤の不飽和状態（飽和度９０〜９５％程度）を持続的に確保するのに必要な量の気泡を滞留させて、地表面近くの地盤中でも有効な不飽和状態を持続的に確保する液状化対策工法を提供する。【解決手段】この工法では、液状化対策の対象地盤において地表面下の液状化層１の上面から所定の深度の範囲を上下の２層１１、１２に分けて、下層１１に多数の気泡を作成滞留させて下層１１を不飽和化し、上層１２に薬液を注入浸透させて上層１２を固化させる。【選択図】図１
LIQUEFACTION COUNTERMEASURE CONSTRUCTION METHOD
PROBLEM TO BE SOLVED: To provide a liquefaction countermeasure construction method capable of increasing a liquefaction strength by desaturating an object ground for liquefaction countermeasure, and capable of continuously maintaining the unsaturated state effective even in the ground near the ground surface by holding air bubbles of an amount (degree of saturation of approx. 90-95%) required for continuously ensuring the unsaturated state of the object ground.SOLUTION: In a construction method, the object ground for liquefaction countermeasure in a range of predetermined depth from the upper face of a liquefaction layer 1 under the ground surface is divided into two layers 11 and 12, many air bubbles are created and held in the lower layer 11 to desaturate the lower layer 11, and the upper layer 12 is solidified by injecting a chemical being penetrating into the upper layer 12.SELECTED DRAWING: Figure 1
【課題】液状化対策の対象地盤を不飽和化して、液状化強度を増大させる。また、この対象地盤の不飽和状態（飽和度９０〜９５％程度）を持続的に確保するのに必要な量の気泡を滞留させて、地表面近くの地盤中でも有効な不飽和状態を持続的に確保する液状化対策工法を提供する。【解決手段】この工法では、液状化対策の対象地盤において地表面下の液状化層１の上面から所定の深度の範囲を上下の２層１１、１２に分けて、下層１１に多数の気泡を作成滞留させて下層１１を不飽和化し、上層１２に薬液を注入浸透させて上層１２を固化させる。【選択図】図１
LIQUEFACTION COUNTERMEASURE CONSTRUCTION METHOD
液状化対策工法
URANO KAZUHIKO (author) / SHIOZAKI ISAO (author)
2016-03-07
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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