In the excavation work on soft ground, the soil improvement method by quicklime piles is likely to be employed in order to obtain the safety of the earth retaining structure. In the design of earth retaining structure, it is important to evaluate precisely the improvement effect on soil property and the prevention effect of earth retaining wall displacement. In this paper, based on soil investigation of improved ground and field measurement of earth retaining structures, the evaluation method of the effect on the soil property and earth retaining wall displacement is presented.
