Use of tiebacks in Southern Ontario

摘要

The application of tiebacks at six sites in Southern Ontario is presented in this paper. The testing methods for tiebacks used and tieback performance at these sites are discussed in this paper. The tieback load transfer (bond strength) and bond capacity (skin friction) obtained from tieback performance tests are related to the soil conditions. Typical values of tieback load transfer and bond capacity in various soils are recommended. Correlations between load transfer/bond capacity and SPT N-value are proposed.