<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0185-092X</journal-id>
<journal-title><![CDATA[Ingeniería sísmica]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. sísm]]></abbrev-journal-title>
<issn>0185-092X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Ingeniería Sísmica A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-092X2023000200001</article-id>
<article-id pub-id-type="doi">10.18867/ris.111.647</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Revisión del requisito de cortante basal mínimo para edificios altos ubicados en la Ciudad de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Revision of the minimum base shear force requirement for tall buildings located in Mexico City]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nuñez Quiroz]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Terán Gilmore]]></surname>
<given-names><![CDATA[Amador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[Ciudad de México Coyoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Materiales ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<numero>111</numero>
<fpage>1</fpage>
<lpage>31</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-092X2023000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-092X2023000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-092X2023000200001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se presenta una evaluación del requisito de fuerza cortante basal mínima (FCBM) de las Normas Técnicas Complementarias para Diseño por Sismo (NTC-Sismo, 2020). La evaluación consiste en generar espectros de inestabilidad dinámica para diferentes sitios de la Ciudad de México y compararlos con sus correspondientes espectros de diseño. La inestabilidad dinámica se evalúa en términos del factor de reducción de resistencia al colapso, R  c , que relaciona las ordenadas de un espectro elástico de pseudoaceleración con la resistencia lateral mínima que le permite a un sistema de un grado de libertad (SUGL) permanecer estable ante un movimiento del suelo dado. En el estudio de R  c se consideran tres modelos histeréticos con envolvente fuerza-desplazamiento trilineal, degradación cíclica de resistencia y efectos P-Delta. Mediante un estudio paramétrico se identifican los parámetros que más influyen sobre el factor R  c para cada modelo histerético ante varios movimientos del suelo representativos de los sismos que ocurren en la Ciudad de México. Posteriormente, se comparan los resultados de los tres modelos histeréticos y se elige el modelo que se emplea en la evaluación de la FCBM. Finalmente, se obtienen los espectros de inestabilidad dinámica y se comparan con sus respectivos espectros de diseño. Se muestra que en edificios regulares en los que el mecanismo de colapso involucra a la mayoría de sus niveles no se requiere el requisito de FCBM.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT An evaluation of the minimum base shear force (MBSF) requirement of the Complementary Technical Standards for Earthquake Design (NTC-Sismo, 2020) is presented. The evaluation consists of generating dynamic instability spectra for different sites in Mexico City and comparing them with their corresponding design spectra. Dynamic instability is evaluated in terms of the collapse strength reduction factor, R  c , which relates the ordinates of an elastic spectrum of pseudoacceleration to the minimum lateral resistance that allows a single-degree-of-freedom (SDOF) model to remain stable under a given ground motion. In the study of R  c , three hysteretic models with trilinear force-displacement envelope, cyclic strength degradation and P-Delta effects are considered. Through a parametric study, the parameters that most influence the R  c factor for each hysteretic model are identified when subjected to an ensemble to ground motions representative of the earthquakes that occur in Mexico City. Subsequently, the results of the three hysteretic models are compared and the model used in the evaluation of the MBSF is chosen. Finally, the dynamic instability spectra are obtained and compared with their respective design spectra. It is shown that in regular buildings in which the collapse mechanism involves most of its levels, the MBSF is not required.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fuerza cortante basal mínima]]></kwd>
<kwd lng="es"><![CDATA[inestabilidad dinámica]]></kwd>
<kwd lng="es"><![CDATA[degradación cíclica de resistencia]]></kwd>
<kwd lng="es"><![CDATA[efectos P-Delta]]></kwd>
<kwd lng="en"><![CDATA[minimum base shear force]]></kwd>
<kwd lng="en"><![CDATA[dynamic instability]]></kwd>
<kwd lng="en"><![CDATA[cyclic strength degradation]]></kwd>
<kwd lng="en"><![CDATA[P-Delta effects]]></kwd>
</kwd-group>
</article-meta>
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