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Analysis and design of an underground hard rock voussoir beam roof
This item is provided by the institution :
National Technical University of Athens
Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA
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ΕΚΤ item type
Journal part
(EN)
Scientific article
(EN)
EKT year
1996
(EN)
EKT historical period
Title
Analysis and design of an underground hard rock voussoir beam roof (EN)
Creator
Sofianos, AI (EN)
Description
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)
Type
journalArticle (EN)
Subject
Structural design (EN)
Mining & Mineral Processing (EN)
Rock mechanics (EN)
voussoir beam (EN)
Structural loads (EN)
Roofs (EN)
Statistical methods (EN)
Computer beam model (EN)
Cracks (EN)
Engineering, Geological (EN)
Mathematical models (EN)
beam roof (EN)
Factor of Safety (EN)
Computer simulation (EN)
Failure modes (EN)
underground excavation (EN)
Strain (EN)
Geometry (EN)
Underground hard rock voussoir beam roof (EN)
Beams and girders (EN)
Deflection (structures) (EN)
Analysis and Design (EN)
Symmetric flat arch (EN)
roof failure (EN)
support (EN)
Analytical formulae (EN)
Structural analysis (EN)
Single non-dimensional graph (EN)
Provider
National Technical University of Athens
Repository / collection
Digital Library of National Technical University of Athens | Dspace@NTUA
Subcollections
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Journal
International Journal of Rock Mechanics and Mining Sciences and Geomechanics (EN)
Language
English
Issued
1996 (EN)
Identifier
http://hdl.handle.net/123456789/11778
33 (EN)
166 (EN)
10.1016/0148-9062(95)00052-6 (EN)
2 (EN)
ISI:A1996UA45100004 (EN)
0148-9062 (EN)
153 (EN)
Publisher
PERGAMON-ELSEVIER SCIENCE LTD (EN)
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