A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LIQUEFACTION PREVENTION METHOD OF GROUND
PROBLEM TO BE SOLVED: To provide a liquefaction prevention method of the ground capable of minimally restraining damage of re-liquefaction by an aftershock, while making both compatible in the liquefaction prevention effect and the ground subsidence prevention.SOLUTION: In a liquefaction prevention method of the ground, underground water of a liquefaction layer 2 is pumped up by pumping-up means 5 while controlling a pumping-up quantity, and after lowering an underground water level up to a predetermined normal time water level WL1, when detecting earthquake motion by earthquake motion detection means 7 while maintaining the normal time water level WL1, the underground water level is lowered up to an earthquake time water level WL2 from the normal time water level WL1 by increasing the pumping-up quantity of the pumping-up means 5, and after maintaining the earthquake time water level WL2 for a constant period, the underground water level is restored to the normal time water level WL1 from the earthquake time water level WL2.SELECTED DRAWING: Figure 3
【課題】液状化防止効果と地盤沈下防止との両立を図りつつ、余震による再液状化の被害を最小に抑えることができる地盤の液状化防止方法の提供。【解決手段】揚水量を制御しつつ揚水手段５により液状化層２の地下水を揚水し、所定の平常時水位ＷＬ１まで地下水位を下げた後、平常時水位ＷＬ１を維持しつつ、地震動検知手段７により地震動を検知した際には、揚水手段５の揚水量を増して地下水位を平常時水位ＷＬ１より地震時水位ＷＬ２まで低下させ、地震時水位ＷＬ２を一定期間維持した後、地下水位を地震時水位ＷＬ２より平常時水位ｗｌ１に復帰させる地盤の液状化防止方法。【選択図】図３
LIQUEFACTION PREVENTION METHOD OF GROUND
PROBLEM TO BE SOLVED: To provide a liquefaction prevention method of the ground capable of minimally restraining damage of re-liquefaction by an aftershock, while making both compatible in the liquefaction prevention effect and the ground subsidence prevention.SOLUTION: In a liquefaction prevention method of the ground, underground water of a liquefaction layer 2 is pumped up by pumping-up means 5 while controlling a pumping-up quantity, and after lowering an underground water level up to a predetermined normal time water level WL1, when detecting earthquake motion by earthquake motion detection means 7 while maintaining the normal time water level WL1, the underground water level is lowered up to an earthquake time water level WL2 from the normal time water level WL1 by increasing the pumping-up quantity of the pumping-up means 5, and after maintaining the earthquake time water level WL2 for a constant period, the underground water level is restored to the normal time water level WL1 from the earthquake time water level WL2.SELECTED DRAWING: Figure 3
【課題】液状化防止効果と地盤沈下防止との両立を図りつつ、余震による再液状化の被害を最小に抑えることができる地盤の液状化防止方法の提供。【解決手段】揚水量を制御しつつ揚水手段５により液状化層２の地下水を揚水し、所定の平常時水位ＷＬ１まで地下水位を下げた後、平常時水位ＷＬ１を維持しつつ、地震動検知手段７により地震動を検知した際には、揚水手段５の揚水量を増して地下水位を平常時水位ＷＬ１より地震時水位ＷＬ２まで低下させ、地震時水位ＷＬ２を一定期間維持した後、地下水位を地震時水位ＷＬ２より平常時水位ｗｌ１に復帰させる地盤の液状化防止方法。【選択図】図３
LIQUEFACTION PREVENTION METHOD OF GROUND
地盤の液状化防止方法
HAYASHI KENTARO (author) / AKIMOTO TEPPEI (author)
2016-04-28
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
LIQUEFACTION PREVENTION UNDERGROUND OBJECT AND SEISMIC GROUND DEFORMATION PREVENTION STRUCTURE
| European Patent Office | 2017