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Autordc.contributor.authorVallejos Massa, Javier Andrés 
Autordc.contributor.authorMarambio, Exequiel 
Autordc.contributor.authorBurgos, Lorena 
Autordc.contributor.authorGonzález, C. V. 
Fecha ingresodc.date.accessioned2020-05-26T23:38:16Z
Fecha disponibledc.date.available2020-05-26T23:38:16Z
Fecha de publicacióndc.date.issued2020
Cita de ítemdc.identifier.citationTunnelling and Underground Space Technology 100: (2020): 103263es_ES
Identificadordc.identifier.other10.1016/j.tust.2019.103263
Identificadordc.identifier.urihttps://repositorio.uchile.cl/handle/2250/174978
Resumendc.description.abstractThe development of mining and underground excavations under high stress conditions, where the occurrence of seismic events may induce sudden energy release, has generated new challenges and additional research related to the dynamic response of reinforcement systems. To ensure safety of underground excavations, the development of new reinforcement elements able to resist dynamic events and yielding during the loading process has advanced in the last 30 years as a result of research studies and testing programs carried out by recognized institutions. The execution of these testing programs involves a considerable time and requires validation. In Chile, the development of a new laboratory-scale dynamic test facility has required several studies in which numerical modelling is considered as an important part of the design process. This paper presents the implementation and results of a numerical model used to simulate the dynamic response of threadbar under laboratory-scale test conditions. A comprehensive calibration of the numerical model using the results of laboratory-scale dynamic tests available from the literature is presented. The continuous and split configurations for the encapsulating tube are tested and compared. A parametric analysis is performed with the calibrated model. The verification of the model is established with an additional laboratory-scale result not considered in the calibration process. A summary of the results in terms of the dissipated energy and the maximum displacement is presented. The results indicates a linear trend between the dissipated energy and the maximum displacement, and a significant improvement of the dynamic response of threadbar when the steel grade or the diameter of the rockbolt is increased.es_ES
Patrocinadordc.description.sponsorshipbasal CONICYT Project of the Advanced Mining Technology Center (AMTC) AFB180004 Corporación de Fomento de la Producción (CORFO Innova) 16CONTEC-65103 Compañía de Aceros del Pacifico (CAP) CODELCO CODELCOTeches_ES
Idiomadc.language.isoenes_ES
Publicadordc.publisherElsevieres_ES
Tipo de licenciadc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link a Licenciadc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Fuentedc.sourceTunnelling and Underground Space Technologyes_ES
Palabras clavesdc.subjectDynamic testses_ES
Palabras clavesdc.subjectReinforcement elementses_ES
Palabras clavesdc.subjectNumerical modellinges_ES
Palabras clavesdc.subjectRockburstes_ES
Palabras clavesdc.subjectHigh stress conditionses_ES
Palabras clavesdc.subjectUnderground excavationses_ES
Títulodc.titleNumerical modelling of the dynamic response of threadbar under laboratory-scale conditionses_ES
Tipo de documentodc.typeArtículo de revistaes_ES
dcterms.accessRightsdcterms.accessRightsAcceso Abierto
Catalogadoruchile.catalogadorctces_ES
Indizaciónuchile.indexArtículo de publicación ISI
Indizaciónuchile.indexArtículo de publicación SCOPUS


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Attribution-NonCommercial-NoDerivs 3.0 Chile
Excepto si se señala otra cosa, la licencia del ítem se describe como Attribution-NonCommercial-NoDerivs 3.0 Chile