Author
Abstract
The study is carried out to investigate the behavior of tunnel lining in sandy soil by
evaluating the magnitudes of the generated stresses that are generally required to ensure the
safety of tunnel construction. The testing program comprised different factors, i.e., sand
depth, density with and without the effect of surface loading. The experimental work was
accomplished through an instrumented (strain gauged) circular tunnel model. It was shown
that the generated stresses, for different loading types, i, e., surcharge, circular or strip
loading, decreased as the sand density increases for all regions (Crown, Shoulder & Springline)
and they increase as the sand depth increases. The results are presented in the form of
design charts.
Keywords
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