An apparatus has been designed and built that will fit into an ordinary triaxial test chamber. Torsional vibration can be induced in the cylindrical soil specimen, and vibration response, during the “static” application of the triaxial stresses can be measured. The dynamic apparatus includes transducers for measuring the pore pressure and axial load.
This apparatus can be used to study the effects of vibration on various soil properties conventionally determined by the triaxial test. It can be used to determine the dynamic shear modulus or shear wave velocity, and to study the damping, or energy dissipative, characteristics of soils.
The boundary conditions for the specimen and properties of the apparatus are simply defined, so that the analytical solution for the specimen-apparatus system, including damping of the apparatus and specimen, has been obtained. This allows interpretation of test results in terms of soil properties.
The results with this apparatus on the variation of shear modulus with confining pressure for dry sand agree well with previous results.
El presente artículo analiza el modelo de financiamiento utilizado por el Ministerio de Educación de Chile. Este modelo considera mecanismos que incentivan la implementación o mejoramiento del desempeño estratégico de las instituciones, así como el eficaz empleo de unidades de análisis institucional, tanto para efectos del desarrollo de programas y proyectos, como para la gestión institucional y la alimentación del
. Análisis del período y desplazamiento de edificios de hormigón armado considerando distintos grados de rigidez en sus elementos resistentes. . Los catastros realizados después del sismo en las ciudades de Santiago, Viña del Mar y Concepción mostraron daños en muros esbeltos con secciones T y rectangulares sometidos a esfuerzos de compresión y cargas laterales. Los elementos dañados se localizaron fundamentalmente en el primer
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.