REPEATABILITY AND EMPIRICAL FORMULA FOR DYNAMIC PROBING IN COHESIVE SOILSششمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله
The Dynamic Probe is an effective and efficient tool used in site investigation. It is more economic than the use of boring equipment particularly when the depth of exploration is moderate. A dynamic probe consists of a tip cone connected to an extension rod and a driving weight for penetration into the ground. The paper covers the design and development of a dynamic probing rig to increase the efficiency of conventional dynamic probes. As part of the research, a series of dynamic probe tests were carried out at 6 different sites in the Khozestan, Hormozgan and Qom provinces in the central and southern regions of Iran. The repeatability and statistical distribution of the results are considered and correlations between dynamic probing results and undrained shear strength identified. A new equation relating dynamic resistance to undrained shear strength is proposed. The paper encourages the wider application of dynamic probing for site investigation in cohesive soils.<\div>
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