ベーンせん断強度の地盤の破壊解析への適用について

概要

論文の詳細を見る
In-situ Vane shear test have been widely used to measure the in-situ undrained strength of soft clays. However, it is pointed out that the strength measured by Vane test is often bigger than the field strength mobilized at the actual failure of embankments. Thus, the vane strength tends to overestimate the safety factor of embankments and/or bearing capacity of the gtround. Therefore, Vane strength can not be directly applied to the stability analysis. It is thought that the discrepancy between the Vane strength and the field strength can be attributed to 1) the effect of the loading rate on the undraind strength and, 2) the effect of anisotropy of the undrained strength. In this paper, these two effect on the Vane strength are discussed based on the results of in-situ and the laboratory tests conducted in the reclaimed area. The failure of excavated channnel in this reclaimed area was analysed using in-situ Vane strength corrected for these effects.
福山大学の論文