<?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>S0185-092X2022000300001</article-id>
<article-id pub-id-type="doi">10.18867/ris.109.625</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Funciones de confiabilidad sísmica de edificios con excentricidades torsionales variables en la altura]]></article-title>
<article-title xml:lang="en"><![CDATA[Seismic reliability functions of buildings with torsional eccentricities varying along their height]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Esteva Maraboto]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz López]]></surname>
<given-names><![CDATA[Orlando J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vásquez Martínez]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rangel Ramírez]]></surname>
<given-names><![CDATA[José G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ingeniería ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Aalborg Departamento de Ingeniería Civil ]]></institution>
<addr-line><![CDATA[Aalborg ]]></addr-line>
<country>Denmark</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<numero>109</numero>
<fpage>1</fpage>
<lpage>27</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-092X2022000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-092X2022000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-092X2022000300001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las normas técnicas complementarias para diseño por sismo de la ciudad de México de los últimos años (2004, 2017, 2020) especifican factores correctivos que se deben aplicar para el diseño de edificios irregulares. Los requisitos para considerar que una estructura se considere regular se establecen en dichos reglamentos los cuales se basan en el comportamiento de las estructuras ante eventos severos pasados. De acuerdo con estos criterios una estructura se considera irregular si no cumple con uno o más de esos requisitos. Para considerar estos efectos se definen unos factores correctivos que dependen del grado de irregularidad de la estructura y que se aplican al factor de reducción Q&#8217;. Estos valores se han establecido de manera intuitiva, por lo que es necesario evaluarlos a partir de estudios sobre respuesta sísmica, orientados a lograr en los sistemas irregulares niveles de seguridad congruentes con los implícitos para sistemas regulares de referencia. En este trabajo se estudia un caso particular de irregularidad correspondiente a edificios con dimensiones en planta variables en la altura que conducen a variación de las excentricidades torsionales a lo largo de la misma. Se establecen criterios para la obtención de funciones de confiabilidad de edificios con irregularidades como las mencionadas y se aplican a algunos casos específicos que puedan emplearse de base para realizar estudios paramétricos sobre la influencia de diversas variables globales sobre los factores correctivos necesarios para generar espectros de diseño que conduzcan a iguales niveles de confiabilidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Codified regulations for earthquake resistant design in Mexico City during the last years (2004, 2017, 2020) specify corrective factors that must be applied to the response spectra adopted for the design of irregular buildings. The requirements adopted to consider that a building structure is regular are essentially based on the experience derived from observations about the behavior of such systems, subjected to previous high-intensity seismic excitations. According with these requirements, a structure is classified as irregular if it does not comply with one or several of these requirements. In order to take into account the influence of the degree of irregularity on the spectral ordinates that must be adopted to achieve a performance level similar to that corresponding to a regular system of equal fundamental period, a set of corrective factors are specified, to be applied to the response reduction factor Q'. These values were established on the basis of engineering judgement; therefore, it is necessary to revise them on the basis of seismic response studies oriented to attaining in the irregular systems reliability levels that are consistent with those implicit for their corresponding reference regular systems. This study is focused on irregular buildings, characterized by plan dimension variable along their height, which lead to variable torsional eccentricities along it. A new criterion is established for the determination of reliability functions of buildings with the mentioned types of irregularities; they are applied to several specific cases to be used as basis for the development of parametric studies about the influence of different global properties on the corrective factors necessary to generate seismic design spectra leading to equal reliability levels.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[confiabilidad sísmica]]></kwd>
<kwd lng="es"><![CDATA[estructuras irregulares]]></kwd>
<kwd lng="es"><![CDATA[sistema regular]]></kwd>
<kwd lng="es"><![CDATA[factores correctivos]]></kwd>
<kwd lng="en"><![CDATA[seismic reliability]]></kwd>
<kwd lng="en"><![CDATA[irregular structures]]></kwd>
<kwd lng="en"><![CDATA[regular system]]></kwd>
<kwd lng="en"><![CDATA[correction factors]]></kwd>
</kwd-group>
</article-meta>
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