<?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>2007-6835</journal-id>
<journal-title><![CDATA[Revista ALCONPAT]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. ALCONPAT]]></abbrev-journal-title>
<issn>2007-6835</issn>
<publisher>
<publisher-name><![CDATA[Asociación Latinoamericana de Control de Calidad, Patología y Recuperación de la Construcción A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-68352022000200210</article-id>
<article-id pub-id-type="doi">10.21041/ra.v12i2.570</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Numerical analysis of the effect of variation of eccentricity of unbonded post-tensioned tendons on the structural behavior of flat slabs]]></article-title>
<article-title xml:lang="pt"><![CDATA[Análise da influência da variação da excentricidade de cordoalhas engraxadas no comportamento estrutural de lajes lisas protendidas]]></article-title>
<article-title xml:lang="es"><![CDATA[Análisis de la influencia de la variación de excentricidad de tendones no-adherentes en el comportamiento estructural de losas planas postensadas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lima]]></surname>
<given-names><![CDATA[Rogério Cattelan Antocheves de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cielo]]></surname>
<given-names><![CDATA[Luciano]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lübeck]]></surname>
<given-names><![CDATA[André]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos Neto]]></surname>
<given-names><![CDATA[Almir Barros da Silva]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal de Santa Maria  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<volume>12</volume>
<numero>2</numero>
<fpage>210</fpage>
<lpage>226</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-68352022000200210&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-68352022000200210&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-68352022000200210&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this study, the effect of variations of eccentricity of tendons in unbonded post-tensioned flat slabs was evaluated. The correct positioning of strands in the assembly of unbonded post-tensioned flat slabs is essential for the structural system to achieve adequate performance and safety. Four different slab models were analyzed with variations in the height of the strands at different positions providing the change in eccentricity and increases in the number of tendons. Pre-compression stresses, stresses on the bottom and top faces, center vertical displacements, load balancing and passive reinforcement of the slabs were evaluated. The ADAPT Floor Pro commercial software was used for the analyses with the design conforming with standard NBR 6118:2014 and recommendations from standard ACI 318:2019. For the models evaluated, it was found that the variation in the eccentricity of the strands in the bottom face of the slab reduced the applied stresses more than variations in the top face.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Neste estudo, avaliou-se a influência de variações de excentricidade dos cabos em lajes lisas protendidas. O correto posicionamento das cordoalhas na montagem de lajes lisas protendidas é imprescindível para que o sistema estrutural alcance desempenho e segurança adequados. Analisou-se quatro modelos diferentes com modificação da altura dos cabos em diferentes pontos e quantidades. Foram avaliadas tensões de pré-compressão, tensões nas faces inferior e superior, flechas, balanceamentos de cargas e armaduras passivas. Utilizou-se o programa ADAPT Floor Pro para as análises, sendo o dimensionamento regido pela NBR 6118:2014 e recomendações do ACI 318:2019. Constatou-se que a variação na excentricidade vertical das cordoalhas na face inferior da laje, reduzem mais os valores das tensões, em comparação com a variação na face superior.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este estudio se evaluó la influencia de las variaciones de excentricidad de los cables en modelos con losas planas postensadas. El correcto posicionamiento de los tendones en el montaje de losas planas postensadas es fundamental para que el sistema estructural logre un adecuado rendimiento y seguridad. Se analizaron cuatro modelos arquitectónicos diferentes con modificación de la altura de los cables en diferentes puntos y cantidad. Se evaluaron tensiones de pre compresión, tensiones extremas en el tope y base, desplazamientos verticales, balanceo de carga y cantidad de acero pasivo de las losas. Para el análisis se utilizó el software ADAPT Floor Pro. El proyecto sigue las recomendaciones de la NBR 6118:2014 y ACI 318:2019. Para los modelos evaluados, se encontró que la variación en la excentricidad vertical de los tendones en la base de la losa reduce aún más los valores de las tensiones aplicadas, en comparación con la variación en el tope.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[post-tensioned concrete]]></kwd>
<kwd lng="en"><![CDATA[unbonded tendons]]></kwd>
<kwd lng="en"><![CDATA[strand eccentricity]]></kwd>
<kwd lng="pt"><![CDATA[Concreto Protendido]]></kwd>
<kwd lng="pt"><![CDATA[Protensão Não Aderente]]></kwd>
<kwd lng="pt"><![CDATA[Excentricidade de Cordoalhas]]></kwd>
<kwd lng="es"><![CDATA[hormigón postensado]]></kwd>
<kwd lng="es"><![CDATA[postensión no-adherente]]></kwd>
<kwd lng="es"><![CDATA[excentricidad de los tendones]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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