Journal article
In Situ Profiling of Soil Stiffness Parameters Using High-Resolution Fiber-Optic Distributed Sensing
Associate Professor, Faculty of Civil and Environmental Engineering1
Assistant Professor, Dept. of Civil and Environmental Engineering2
Assistant Professor, Faculty of Civil and Environmental Engineering3
This paper explores the possibility of using high-resolution fiber-optic distributed sensing for in situ geotechnical estimation of soil shear modulus distribution with depth. It is shown that a recursive analysis of an elastic problem together with a measured vertical strain can assist in evaluating the sought stiffness values.
It is suggested that high-resolution fiber-optic distributed sensing can provide the necessary strain for the proposed process. The approach was demonstrated in a field trial, entailing a stratified soil profile including a thin sand layer encapsulated between two clay layers. Results of the suggested profiling method are compared against data from a geophysical survey and against correlations with conventional in situ testing.
Excellent agreement is exhibited between the different methods, indicating aptitude and viability of the idea for implementation as a geotechnical investigative tool.
Language: | English |
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Publisher: | American Society of Civil Engineers |
Year: | 2016 |
ISSN: | 19435606 and 10900241 |
Types: | Journal article |
DOI: | 10.1061/(ASCE)GT.1943-5606.0001493 |