Numerical evaluation of the response in bending of an underground hard rock Voussoir beam roof

Sofianos, AI; Kapenis, AP

dc.contributor.author	Sofianos, AI	en
dc.contributor.author	Kapenis, AP	en
dc.date.accessioned	2014-03-01T01:13:56Z
dc.date.available	2014-03-01T01:13:56Z
dc.date.issued	1998	en
dc.identifier.issn	0148-9062	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12798
dc.subject	Stress Field	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Mining & Mineral Processing	en
dc.subject.other	Beams and girders	en
dc.subject.other	Bending (deformation)	en
dc.subject.other	Buckling	en
dc.subject.other	Computer software	en
dc.subject.other	Cracks	en
dc.subject.other	Deflection (structures)	en
dc.subject.other	Failure analysis	en
dc.subject.other	Mathematical models	en
dc.subject.other	Roofs	en
dc.subject.other	Strain	en
dc.subject.other	Stress analysis	en
dc.subject.other	Structural analysis	en
dc.subject.other	Voussoir beams	en
dc.subject.other	Underground structures	en
dc.subject.other	bending	en
dc.subject.other	hard rock	en
dc.subject.other	roof	en
dc.title	Numerical evaluation of the response in bending of an underground hard rock Voussoir beam roof	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0148-9062(98)00166-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0148-9062(98)00166-1	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	The behaviour of a hard rock horizontally stratified roof, within a low primary lateral stress field, is investigated. The lowest roof stratum is modelled as a voussoir beam with three cracks, one at the midspan and one at each abutment. Its response in bending is computed, with the help of a distinct element computer code, for an ordered series of configurations. Two states of failure, ie buckling and crushing, are examined. The parameters of indeterminacy of the structure are investigated numerically and improved relations are derived for their evaluation. From the solution of the determined structure, deflection, strains and stability limits are evaluated analytically and validated numerically. Finally, in order to check against crushing, a chart is provided for the prediction of the lateral non-linearly distributed axial strain at the extreme fibre of the abutment.The behaviour of a hard rock horizontally stratified roof, within a low primary lateral stress field, is investigated. The lowest roof stratum is modelled as a voussoir beam with three cracks, one at the midspan and one at each abutment. Its response in bending is computed, with the help of a distinct element computer code, for an ordered series of configurations. Two states of failure, i.e. buckling and crushing, are examined. The parameters of indeterminacy of the structure are investigated numerically and improved relations are derived for their evaluation. From the solution of the determined structure, deflections, strains and stability limits are evaluated analytically and validated numerically. Finally, in order to check against crushing, a chart is provided for the prediction of the lateral non-linearly distributed axial strain at the extreme fibre of the abutment.	en
heal.publisher	Elsevier Sci Ltd, Exeter, United Kingdom	en
heal.journalName	International Journal of Rock Mechanics and Mining Sciences	en
dc.identifier.doi	10.1016/S0148-9062(98)00166-1	en
dc.identifier.isi	ISI:000077221500005	en
dc.identifier.volume	35	en
dc.identifier.issue	8	en
dc.identifier.spage	1071	en
dc.identifier.epage	1086	en