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      A comparative study of two models for the seismic analysis of buildings Translated title: Estudio comparativo de dos modelos para análisis sísmico de edificios

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          Abstract

          This paper presents a model for the seismic analysis of buildings, taking two lumped masses at each level in a structure's free nodes and comparing them to the traditional model which considers lumped masses per level, i.e., a mass for each floor of the entire building. This is usually done in the seismic analysis of buildings; not all values are conservative in the latter, as can be seen in the table of results. Both models took shear deformations into account. Therefore, the usual practice of considering a lumped mass per each level would not be a recommended solution; using two lumped masses per level is thus proposed and is also more related to real conditions.

          Translated abstract

          En este documento se presenta un modelo para análisis sísmico de edificios en el cual se toman dos masas concentradas por cada nivel aplicadas en los nodos libres de la estructura y se compara con el modelo tradicional, que considera las masas concentradas por nivel, es decir, una masa por cada piso de todo el edificio, que es como normalmente se hace; en este último no todos los valores son conservadores, como se puede notar en la tabla de resultados del problema considerado. Ambos modelos toman en cuenta las deformaciones por cortante. Por lo tanto, la práctica usual de considerar las masas concentradas, una por cada nivel, no será una solución recomendable, y se propone el empleo de tomar dos masas concentradas por nivel, que se apega más a la realidad.

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          Theory of matrix structural analysis

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            Dinámica Estructural Aplicada al Diseño Sísmico

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              Structural analysis: using classical and matrix methods

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                Author and article information

                Contributors
                Role: ND
                Journal
                iei
                Ingeniería e Investigación
                Ing. Investig.
                Facultad de Ingeniería, Universidad Nacional de Colombia. (Bogotá )
                0120-5609
                December 2012
                : 32
                : 3
                : 37-41
                Affiliations
                [1 ] Universidad Autónoma de Coahuila Mexico
                Article
                S0120-56092012000300008
                f4ed9be4-53df-40b7-a09b-69cd2b15e2f8

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0120-5609&lng=en
                Categories
                ENGINEERING, MULTIDISCIPLINARY

                General engineering
                modal analysis,spectral analysis,eigenvalues and eigenvectors,modal participation factor,spectral acceleration,maximum normal coordinate vector,análisis modal,análisis espectral,valores y vectores característicos,factor de participación modal,aceleración espectral y vector de coordenadas normales máximas

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