Estimation of Residual Undrained Shear Strength from Gravity Corer Penetration Data |
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| Authors: | Chaitanya Vardhan Debasis Roy |
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| Institution: |
a Department of Civil Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India |
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| Abstract: | Residual undrained shear strength, su_res, is an important parameter for analyzing the response of structures buried within potentially unstable soil mass. A framework for estimating su_res of fine grained sediments from gravity corer penetration has been developed considering viscous drag during free fall of the corer through seawater and cohesive energy loss during sediment penetration. The procedure was used to estimate su_res using data from a submarine geotechnical investigation in western Canada. Comparison of the results with alternative estimates of su_res from miniature torvane tests on the gravity core samples and CPTs performed nearby reveals a reasonable agreement. |
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| Keywords: | α method drag gravity corer sediment penetration terminal velocity undrained shear strength |
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