ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'CodigoInstitucion'. [20018] (severity 16) [SELECT PublicObrasAutores.NumeroEmpleado, PublicObrasAutores.ApellidoPaterno, PublicObrasAutores.ApellidoMaterno, PublicObrasAutores.Nombre, PublicObrasAutores.NombreCompleto FROM PublicObrasAutores LEFT JOIN PublicObrasAutoresFil ON PublicObrasAutores.RefPublicacion = PublicObrasAutoresFil.RefPublicacion WHERE PublicObrasAutores.RefPublicacion = '503122' AND PublicObrasAutores.NumeroEmpleado IS NULL AND PublicObrasAutoresFil.CodigoInstitucion IS NOT NULL;]
®
ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'CodigoInstitucion'. [20018] (severity 16) [SELECT PublicObrasAutores.NumeroEmpleado, PublicObrasAutores.ApellidoPaterno, PublicObrasAutores.ApellidoMaterno, PublicObrasAutores.Nombre, PublicObrasAutores.NombreCompleto FROM PublicObrasAutores LEFT JOIN PublicObrasAutoresFil ON PublicObrasAutores.RefPublicacion = PublicObrasAutoresFil.RefPublicacion WHERE PublicObrasAutores.RefPublicacion = '503122' AND PublicObrasAutores.NumeroEmpleado IS NULL AND PublicObrasAutoresFil.CodigoInstitucion IS NULL;]
®
ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'Institucion'. [20018] (severity 16) [SELECT Institucion FROM PublicObrasAutoresFil WHERE RefPublicacion = '503122']
®
ERROR:SQLSTATE[HY000]: General error: 20018 Invalid column name 'Institucion'. [20018] (severity 16) [SELECT Institucion FROM PublicObrasAutoresFil WHERE RefPublicacion = 503122 AND InstitucionPropia = 'S'
UNION
SELECT Adscripciones.Entidad FROM PublicacionesObras
JOIN PublicObrasAutores ON PublicacionesObras.Identificador = PublicObrasAutores.RefPublicacion
JOIN Adscripciones ON PublicObrasAutores.NumeroEmpleado = Adscripciones.NumeroEmpleado
WHERE (PublicacionesObras.FechaPublicacion BETWEEN Adscripciones.FechaDesde AND Adscripciones.FechaHasta OR (PublicacionesObras.FechaPublicacion >= Adscripciones.FechaDesde AND Adscripciones.FechaHasta IS NULL)) AND PublicacionesObras.Identificador= 503122]
SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: From Fundamentals To Applications In Geotechnics Título del capítulo: Comparison of Numerical Modeling and Measured Data for a Tunnel Built in Soft Rocks
Autores UNAM: Autores externos: Idioma: Año de publicación: 2015Palabras clave:
Tunnel Numerical Modeling; Geotechnical Instrumentation; Stress State
Resumen:
A geotechnical numerical model of a section belonging to La Loma Tunnel
located in the west zone of Mexico City is depicted in this paper. This
road tunnel is placed in a hilly volcanic zone, composed essentially by
pumice sand, tuff and lahar; it was dug in three stages using a
roadheader machine and placing 30 cm thick permanent shotcrete lining.
During the tunnel construction, instrumentation was carried out in a
section, including the setup of strain-gauges and pressure cells in
order to measure tangential strain in the lining and vertical stress
under the strip foundation, respectively. Three numerical model
variants, carried out by means of Finite Element Method using plane
strain conditions, were developed considering different assumptions, the
first one considers all the excavation stages and the evolution of
mechanical properties of shotcrete, the second one takes into account
also all the excavation stages but constant mechanical properties and
the last one considers just one excavation stage and constant mechanical
properties of shotcrete. The aim of this work was to compare the stress
state in the shotcrete lining and foundation from modeling results with
measured data obtained from instrumentation to be able to conclude about
the most efficient model.