<?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>S0185-092X2021000200031</article-id>
<article-id pub-id-type="doi">10.18867/ris.106.585</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[SOBRE CÓMO UN EDIFICIO VULNERABLE RESISTIÓ SIN DAÑOS EL SISMO DE CARACAS DE 1967]]></article-title>
<article-title xml:lang="en"><![CDATA[ABOUT HOW A VULNERABLE BUILDING RESISTED THE 1967 CARACAS EARTHQUAKE WITHOUT DAMAGE]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[Oscar A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central de Venezuela Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central de Venezuela Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<numero>106</numero>
<fpage>31</fpage>
<lpage>44</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-092X2021000200031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-092X2021000200031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-092X2021000200031&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN. El sismo de 1967 ocasionó daños en el 48% de los edificios localizados en la zona de Los Palos Grandes-Altamira en Caracas. Se analiza el sorprendente desempeño de un edificio de marcos de concreto armado, de elevada vulnerabilidad, el cual no sufrió daños durante el sismo a pesar de no poseer vigas en una dirección y de tener una condición de piso débil en su nivel inferior debido a la ausencia de paredes. Se generaron cuatro pares de acelerogramas representativos del movimiento en la zona de gran espesor de sedimentos considerando que el movimiento tiene una intensidad en la dirección Norte-Sur aproximadamente tres veces mayor que en la dirección Este-Oeste. Se desarrollaron modelos matemáticos ajustados a las mediciones de vibración ambiental. La respuesta del edificio fue determinada mediante análisis dinámico no lineal, obteniéndose un desempeño similar al observado, resaltando una variación significativa en la respuesta ante un acelerograma u otro. Destaca la influencia determinante que tuvo la orientación del edificio; la carencia de daños se debió a la coincidencia favorable entre la dirección de mayor rigidez y resistencia de la estructura y la dirección de mayor intensidad del movimiento. Se evaluó el desempeño del edificio si se hubiese construido rotado 90°, obteniéndose daño estructural importante, lo cual enfatiza la necesidad de reforzar edificios antiguos similares que no sufrieron daños.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT. The 1967 earthquake caused damage in 48% of buildings located in the Los Palos Grandes-Altamira area in Caracas. The surprising performance of a highly vulnerable reinforced concrete frame building is analyzed, which did not suffer damage during the earthquake despite not having beams in one direction and having a weak floor condition at its lower level due to the absence of walls. Four pairs of accelerograms representative of movement in the thick sediment zone were generated, considering that the motion has an intensity in the North-South direction that is approximately three times greater than the East-West direction. Mathematical models adjusted to environmental vibration measurements were developed. The response of the building was determined by means of non-linear dynamic analysis, achieving a performance similar to that observed, highlighting a significant variation in the response from one accelerogram to another. The influence of the particular orientation of this building is highlighted; the lack of damage was due to the favorable coincidence between the strong direction of greater rigidity and resistance of the structure and the direction of greater intensity of ground motion. The performance of the building was evaluated if it had been built rotated 90°, obtaining significant structural damage, which emphasizes the need to reinforce similar old buildings that were not damaged.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[sismo 1967]]></kwd>
<kwd lng="es"><![CDATA[edificio Belaire]]></kwd>
<kwd lng="es"><![CDATA[análisis dinámico no lineal]]></kwd>
<kwd lng="es"><![CDATA[Los Palos Grandes]]></kwd>
<kwd lng="en"><![CDATA[1967 earthquake]]></kwd>
<kwd lng="en"><![CDATA[Belaire building]]></kwd>
<kwd lng="en"><![CDATA[nonlinear dynamic analysis]]></kwd>
<kwd lng="en"><![CDATA[Los Palos Grandes]]></kwd>
</kwd-group>
</article-meta>
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