Tarbiat Modares University Modares Civil Engineering journal 2476-6763 11 2 2011 08 23 The Use of Dynamic Probing For Investigation of Fine Soils and Evaluation of Undrained Shear Strength The Use of Dynamic Probing For Investigation of Fine Soils and Evaluation of Undrained Shear Strength 11597 FA M. Khodaparast A. Fakher Journal Article Abstract: 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. The paper covers the design and development of a dynamic probing rig and a new soil sampler to increase the efficiency of conventional dynamic probes. The repeatability 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 fine soils. Abstract: 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. The paper covers the design and development of a dynamic probing rig and a new soil sampler to increase the efficiency of conventional dynamic probes. The repeatability 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 fine soils. https://mcej.modares.ac.ir/article_11597_7212a6567c8a6c513f33b858d868ff80.pdf