Authors: Vardhan, Chaitanya; Roy, Debasis

Source: Marine Georesources and Geotechnology, Volume 24, Number 4, October-December 2006 , pp. 305-316(12)

Publisher: Taylor and Francis Ltd

Abstract:

<p>Residual undrained shear strength, <i>s</i>_{<i>u_res</i>}, is an important parameter for analyzing the response of structures buried within potentially unstable soil mass. A framework for estimating <i>s</i>_{<i>u_res</i>} 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 <i>s</i>_{<i>u_res</i>} using data from a submarine geotechnical investigation in western Canada. Comparison of the results with alternative estimates of <i>s</i>_{<i>u_res</i>} from miniature torvane tests on the gravity core samples and CPTs performed nearby reveals a reasonable agreement.</p>

Keywords: α method; drag; gravity corer; sediment penetration; terminal velocity; undrained shear strength

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10641190600974714

Affiliations: 1: Department of Civil Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India

Publication date: 2006-10-01

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