Supported axisymmetric tunnels within linear viscoelastic burgers rocks

Nomikos, P; Rahmannejad, R; Sofianos, A

dc.contributor.author	Nomikos, P	en
dc.contributor.author	Rahmannejad, R	en
dc.contributor.author	Sofianos, A	en
dc.date.accessioned	2014-03-01T01:37:10Z
dc.date.available	2014-03-01T01:37:10Z
dc.date.issued	2011	en
dc.identifier.issn	0723-2632	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21473
dc.subject	Analytical solution	en
dc.subject	Axisymmetric tunnel	en
dc.subject	Burgers model	en
dc.subject	Numerical simulation	en
dc.subject	Viscoelastic rock	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Analytical formulas	en
dc.subject.other	Analytical solutions	en
dc.subject.other	Axisymmetric	en
dc.subject.other	Burgers model	en
dc.subject.other	Closed form solutions	en
dc.subject.other	Contour plot	en
dc.subject.other	Design life	en
dc.subject.other	Effect of the support	en
dc.subject.other	Finite difference	en
dc.subject.other	Ground reaction curves	en
dc.subject.other	Installation time	en
dc.subject.other	Linear elastic	en
dc.subject.other	Linear viscoelastic	en
dc.subject.other	Mechanical behaviour	en
dc.subject.other	Numerical results	en
dc.subject.other	Rock creep	en
dc.subject.other	Time-dependent	en
dc.subject.other	Viscoelastic constants	en
dc.subject.other	Viscoelastic models	en
dc.subject.other	Viscoelastic rocks	en
dc.subject.other	Computer simulation	en
dc.subject.other	Pressure effects	en
dc.subject.other	Stiffness	en
dc.subject.other	Rocks	en
dc.subject.other	diagram	en
dc.subject.other	displacement	en
dc.subject.other	finite difference method	en
dc.subject.other	installation	en
dc.subject.other	linearity	en
dc.subject.other	mathematical analysis	en
dc.subject.other	numerical model	en
dc.subject.other	pressure effect	en
dc.subject.other	stiffness	en
dc.subject.other	tunnel	en
dc.subject.other	two-dimensional modeling	en
dc.subject.other	viscoelasticity	en
dc.title	Supported axisymmetric tunnels within linear viscoelastic burgers rocks	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s00603-011-0159-0	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00603-011-0159-0	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	An exact closed form solution is derived for the mechanical behaviour of a linear viscoelastic Burgers rock around an axisymmetric tunnel, supported by a linear elastic ring. Analytical formulae are provided for the displacement of the rock/lining interface and for the pressure exerted by the rock on the lining, taking into account the stiffness and its installation time. Results calculated from these formulae do validate the corresponding numerical results of a 2D finite differences code. Further, comparison to previous existing solutions for the same viscoelastic model indicates similarities and differences.Aparametric study is performed to investigate the effect of the viscoelastic constants, the stiffness and installation time of the support. The derived closed form solution is used to construct the time-dependent Supported Ground Reaction Curves of the viscoelastic rock, i.e. the time contour plots on the convergence confinement diagram. The importance of the effect of the support on the restrained rock creep and the exerted pressure on the lining, during the design life of a structure, is examined. © Springer-Verlag 2011.	en
heal.publisher	SPRINGER WIEN	en
heal.journalName	Rock Mechanics and Rock Engineering	en
dc.identifier.doi	10.1007/s00603-011-0159-0	en
dc.identifier.isi	ISI:000293949800004	en
dc.identifier.volume	44	en
dc.identifier.issue	5	en
dc.identifier.spage	553	en
dc.identifier.epage	564	en