Stress distribution around a tunnel situated in a layer under the action of gravity

Theocaris, PS; Koroneos, E

dc.contributor.author	Theocaris, PS	en
dc.contributor.author	Koroneos, E	en
dc.date.accessioned	2014-03-01T01:05:29Z
dc.date.available	2014-03-01T01:05:29Z
dc.date.issued	1972	en
dc.identifier.issn	00357448	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8855
dc.subject	Stress Distribution	en
dc.subject.other	ROCK MECHANICS	en
dc.subject.other	STRESSES - Analysis	en
dc.subject.other	TUNNELS	en
dc.title	Stress distribution around a tunnel situated in a layer under the action of gravity	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF01596999	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF01596999	en
heal.publicationDate	1972	en
heal.abstract	Stress Distribution Around a Tunnel Situated in a Layer Under the Action of Gravity: An experimental investigation is presented of the displacement and stress distribution in a narrow layer made of a homogeneous medium, which contains a central circular tunnel, under the influence of its own weight. The tests were executed in models made of a strongly plasticized epoxy polymer, which were very sensitive to the influence of body forces. For the measurement of displacements the projected image moiré method was used. A dense crossed grating was printed on the surface of the model, which was projected, by a parallel light beam, on a similar, but linear, reference grating, which was printed on a glass plate. The deformation of the model was achieved by the inversion method, where the model was freely suspended from the one extremity and left to deform by its own weight. A series of photographs at different time intervals, with the reference grating positioned successively parallely to the two principal axes of the specimen, gave sufficient data for the complete evaluation of all components of displacements and strains around the tunnel. The components of stresses were evaluated by using the elastic stress-strain relations holding for this case and the mechanical elastic constants valid for the material. Important stress-concentrations were revealed at the boundary of the cavity. The results derived from this investigation are applicable to problems of soil and rock mechanics. © 1972 Springer-Verlag.	en
heal.publisher	Springer-Verlag	en
heal.journalName	Rock Mechanics Felsmechanik Mécanique des Roches	en
dc.identifier.doi	10.1007/BF01596999	en
dc.identifier.volume	4	en
dc.identifier.issue	3	en
dc.identifier.spage	139	en
dc.identifier.epage	154	en