EFFECT OF SOAK ON PRESTRESSING FORCE AND CREEP OF GROUND ANCHORAGE IN SLOPE

Abstract

We investigated relationships between prestressing force and creep of ground anchorages executed on slopes subjected to water infiltration. This paper reported on monitoring data of anchors which were installed inside different grounds such as a road cutting slope, a storage reservoir slope and a weathered serpentinite slope. The decrease of the prestressing force could be caused by a collapse due to rainfall or submergence in an unsaturated soil ground. On the other hand, the increase of the prestressing force could be caused by swelling of an expansive clay mineral. Finally, we emphasized that the prestressing force of the anchor expected fasten effect might be not effectively applying on a slip surface.