Effects of Toe Grouting on Axial Performance of Drilled Shafts Socket in Intermediate Geomaterial

Abstract

In this paper, the axial performance of two heavily instrumented drilled shafts, with and without toe grouting, socket in intermediate geomaterials in Taipei are evaluated based on the results of pile load tests. The load versus settlement at pile head and the t-z curves along shaft, especially for the part socket into intermediate geomaterials, are main concerns. The t-z curves interpreted from the measured data along shaft are also simulated by the hyperbolic model. The value of friction factor (β) of the shaft with or without grouting is also compared in the paper. It’s found toe grouting improved not only the end bearing capacity but also the frictional resistance of the tested shaft.