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Ponencias en congresos:
System Reliability Analysis of a Circular Rock Tunnel Using a First Order Approximation
Año:2014
Áreas de investigación
  • Ingenieria civil
Datos
Descripción
An approximated linearization approach based on the first order reliability method (FORM) is applied to analyse the system reliability of a circular tunnel in a jointed rock mass characterized by the Hoek-Brown non-linear failure criterion. Three failure modes are considered in this paper: exceedance of support deformation capacity, unacceptable tunnel convergence and insufficient rockbolt length. We employ the convergence-confinement method (CCM) to compute the stresses and displacements around the tunnel. Eight parameters?related to rock mass properties, in situ stress and shotcrete properties?are regarded as independent random variables with lognormal distributions.The series system reliability is computed, through the complementary of the intersection of safe domains, based on the results of FORM. An illustrative example is demonstrated with a circular tunnel.We compare the solution of the proposed method with Monte Carlo simulation (MCS) and bimodal bounds. The results show that the proposed approach can be applied to deal, efficiently and accurately, with the system reliability problem of circular rock tunnels.
Internacional
Si
Nombre congreso
Proceedings of the 2014 ISRM European Rock Mechanics Symposium (EUROCK 2014)
Tipo de participación
960
Lugar del congreso
Vigo, Spain
Revisores
Si
ISBN o ISSN
978-1-138-00149-7
DOI
10.1201/b16955-135
Fecha inicio congreso
26/05/2014
Fecha fin congreso
28/05/2014
Desde la página
787
Hasta la página
791
Título de las actas
Rock Engineering and Rock Mechanics: Structures in and on Rock Masses. Proceedings of the 2014 ISRM European Rock Mechanics Symposium (EUROCK 2014)
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Zeng Peng . (UPM)
  • Autor: Rafael Jimenez Rodriguez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Mecánica de Rocas
  • Departamento: Ingeniería y Morfología del Terreno
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