Analysis and design of an underground hard rock voussoir beam roof

Sofianos, AI

dc.contributor.author	Sofianos, AI	en
dc.date.accessioned	2014-03-01T01:11:41Z
dc.date.available	2014-03-01T01:11:41Z
dc.date.issued	1996	en
dc.identifier.issn	0148-9062	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11778
dc.subject	Analysis and Design	en
dc.subject	Factor of Safety	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Mining & Mineral Processing	en
dc.subject.other	beam roof	en
dc.subject.other	roof failure	en
dc.subject.other	support	en
dc.subject.other	underground excavation	en
dc.subject.other	voussoir beam	en
dc.subject.other	Beams and girders	en
dc.subject.other	Computer simulation	en
dc.subject.other	Cracks	en
dc.subject.other	Deflection (structures)	en
dc.subject.other	Geometry	en
dc.subject.other	Mathematical models	en
dc.subject.other	Rock mechanics	en
dc.subject.other	Statistical methods	en
dc.subject.other	Strain	en
dc.subject.other	Structural analysis	en
dc.subject.other	Structural design	en
dc.subject.other	Structural loads	en
dc.subject.other	Analytical formulae	en
dc.subject.other	Computer beam model	en
dc.subject.other	Failure modes	en
dc.subject.other	Single non-dimensional graph	en
dc.subject.other	Symmetric flat arch	en
dc.subject.other	Underground hard rock voussoir beam roof	en
dc.subject.other	Roofs	en
dc.title	Analysis and design of an underground hard rock voussoir beam roof	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0148-9062(95)00052-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0148-9062(95)00052-6	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The behaviour of a voussoir hard rock beam roof is investigated by considering it to act as a symmetric flat arch with cracks at the abutments and at midspan. Analytical formulae are derived initially that evaluate, for any given geometry, loading and mechanical parameters of the beam, its deflection and strain within it in terms of the extreme and mean arch thicknesses. The latter are determined statistically by best fitting a large amount of available computer beam model responses. Three relations are then established, one for each of the three examined modes of failure, i.e. snap through, crushing of the rock and transverse slip at the abutment, that relate the loading of the beam, its mechanical parameters and its dimensions. Finally all three relations are incorporated in a single non-dimensional graph where the loading and the mechanical parameters of the beam are related to the geometry of the beam for various factors of safety of the three modes of failure. Copyright © 1996 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Rock Mechanics and Mining Sciences and Geomechanics	en
dc.identifier.doi	10.1016/0148-9062(95)00052-6	en
dc.identifier.isi	ISI:A1996UA45100004	en
dc.identifier.volume	33	en
dc.identifier.issue	2	en
dc.identifier.spage	153	en
dc.identifier.epage	166	en