{"id":99030,"date":"2010-05-02T00:00:00","date_gmt":"2010-05-02T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/a-model-for-the-non-linear-dynamic-analysis-of-reinforced-concrete-and-masonry-framed-structures\/"},"modified":"2010-05-02T00:00:00","modified_gmt":"2010-05-02T00:00:00","slug":"a-model-for-the-non-linear-dynamic-analysis-of-reinforced-concrete-and-masonry-framed-structures","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/tecnologia-de-la-construccion\/a-model-for-the-non-linear-dynamic-analysis-of-reinforced-concrete-and-masonry-framed-structures\/","title":{"rendered":"A model for the non linear dynamic analysis of reinforced concrete and masonry framed structures"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Fernando Sima Brum <\/strong><\/h2>\n<p>The assessment of the dynamic or seismic performance of complex structures often  requires the integration in the time domain of the structural equation of motion in the frame  of a non-linear analysis. In the case of masonry and reinforced concrete structures, the use  of these methods for the assessment of the structure become of great importance, due to its  complex non linear behavior, even for low levels of loading. A great number of these  structures may be idealized as spatial frames. A generalization of the conventional matrix  methods for the analysis of spatial framed structures has been developed in the upc during  the last two decades, the so-called generalized matrix formulation (gmf). The basic  formulation for curved elements with variable cross section was presented by carrasc\u00f3n et  al. (1987). Carol and murcia (1989) extended this flexibility based formulation to the non  linear time dependant analysis. This formulation was later extended to the geometrical and  material non linear analysis of masonry framed structures (molins, 1996; molins and roca,  1998). An extension of the basic formulation to the linear dynamic analysis was later  proposed by molins et al. (1998) through the introduction of a consistent mass matrix. The  formulation has proved for more than fifteen years of extensive use, to be an efficient tool  for the analysis of 3d framed structures.  the aim of this research is to extend the gmf to the non linear dynamic analysis of  reinforced concrete and masonry framed structures.  Following this main goal, the basic  formulation has been complemented with a series of new features:  \u00c2\u00bf a uniaxial constitutive model for concrete and masonry subjected to cyclic  loadings in both compression and tension has been proposed. Particular emphasis  has been paid to the description of the strength and stiffness degradation produced  by the load cycling in both, tension and compression, the shape of unloading and  reloading curves and the transition between opening and closing of cracks. Two  independent damage parameters in compression and in tension have been  introduced to model the concrete degradation due to increasing loads. In the case of  cyclic compressive loading, the model has been derived from experimental results  obtained by other authors by considering the dependency of the cyclic variables  with the damage level attained by the concrete. In  the case of cyclic tension a  simple model is adopted based on experimental observations.  \u00c2\u00bf a constitutive model for the cyclic behavior of reinforcing steel, the well known  menegotto-pinto model, has been adopted.   \u00c2\u00bf finally, a time step procedure for the integration  of the dynamic equilibrium  equation of the structure has been adopted.  in order to show the capabilities of the proposed formulation, once implemented in a  computer program, it has been applied in three examples of structures subjected to cyclic  and dynamic loadings. The obtained results show that the model may adequately predict  the cyclic\/dynamic response of this type of structures.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>A model for the non linear dynamic analysis of reinforced concrete and masonry framed structures<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 A model for the non linear dynamic analysis of reinforced concrete and masonry framed structures <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Fernando Sima Brum <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de catalunya<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 05\/02\/2010<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Pere Roca Fabregat<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio  ricardo Mar\u00ed bernat <\/li>\n<li>daniel vitorino Castro oliveira (vocal)<\/li>\n<li>salvador Ivorra chorro (vocal)<\/li>\n<li>carmelo Javier Le\u00f3n gonz\u00e1lez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Fernando Sima Brum The assessment of the dynamic or seismic performance of complex structures often requires [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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