Stability of asymmetric roof wedge under non-symmetric loading

Nomikos, PP; Yiouta-Mitra, PV; Sofianos, AI

dc.contributor.author	Nomikos, PP	en
dc.contributor.author	Yiouta-Mitra, PV	en
dc.contributor.author	Sofianos, AI	en
dc.date.accessioned	2014-03-01T11:44:43Z
dc.date.available	2014-03-01T11:44:43Z
dc.date.issued	2006	en
dc.identifier.issn	0723-2632	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/37117
dc.subject	Limit equilibrium	en
dc.subject	Numerical simulation	en
dc.subject	Rock wedges	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Bearing capacity	en
dc.subject.other	Computer simulation	en
dc.subject.other	Friction	en
dc.subject.other	Joints (structural components)	en
dc.subject.other	Plastic deformation	en
dc.subject.other	Stresses	en
dc.subject.other	Distinct Element Method	en
dc.subject.other	Frictional joint resistance	en
dc.subject.other	Limit equilibrium	en
dc.subject.other	Rock wedges	en
dc.subject.other	Rock mechanics	en
dc.subject.other	loading	en
dc.subject.other	rock mechanics	en
dc.subject.other	roof	en
dc.subject.other	stability analysis	en
dc.title	Stability of asymmetric roof wedge under non-symmetric loading	en
heal.type	other	en
heal.identifier.primary	10.1007/s00603-005-0058-3	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00603-005-0058-3	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	An analytical method is presented for the calculation of the load carrying capacity of two-dimensional asymmetric rock wedges when the loading on the joint faces is non symmetric, such as the case of an asymmetric wedge formed in the roof of a circular tunnel in an inclined stress field. The pull out force that causes yield at one of the joint faces is evaluated from formulae based on the limiting equilibrium conditions assuming a purely frictional joint resistance. Next, the total pull out force required for the secondary face to yield is calculated. During this step, the wedge is further displaced and while the primary yielding face is plastically deformed, the other face is still in the elastic range until failure. Validation of the analytical procedure is obtained with the UDEC code, which provides an implementation of the Distinct Element Method in two dimensions. When the assumptions made in the analytical procedure are valid, the analytically calculated values for the pull out resistance of the wedge are computed to be close to the numerically obtained ones.	en
heal.publisher	SPRINGER WIEN	en
heal.journalName	Rock Mechanics and Rock Engineering	en
dc.identifier.doi	10.1007/s00603-005-0058-3	en
dc.identifier.isi	ISI:000236486800003	en
dc.identifier.volume	39	en
dc.identifier.issue	2	en
dc.identifier.spage	121	en
dc.identifier.epage	129	en