<公表論文1>動的遠心力載荷試験による戸建住宅地盤の薬液注入液状化対策の効率化評価

Abstract

Severe damages such as large settlement and tilting of detached houses have been often observed due to ground liquefaction in many past earthquakes. The current situation is that liquefaction countermeasures have not been adopted for the existing detached houses since the house owner couldn’t understand the potential of the liquefaction damage. In addition, it is very difficult to improve the existing detached house ground. Therefore, in this study, the efficiency of the chemical grouting improvement as liquefaction measures for detached house ground was evaluated based on a series of dynamic centrifuge tests. Differences in subsidence of two-story house on liquefaction prone ground were investigated in a 50G centrifuge. Based on experimental results, it is found that the subsidence of detached house is greatly reduced if the outer edge of the house is improved with the right depth.