{"id":2726,"date":"2013-01-31T20:03:37","date_gmt":"2013-01-31T20:03:37","guid":{"rendered":"http:\/\/teoriadeconstruccion.net\/blog2013\/?p=2726"},"modified":"2013-02-24T10:25:10","modified_gmt":"2013-02-24T10:25:10","slug":"progresion-de-la-fisuracion-en-vigas","status":"publish","type":"post","link":"https:\/\/teoriadeconstruccion.net\/blog\/progresion-de-la-fisuracion-en-vigas\/","title":{"rendered":"Progresi\u00f3n de la fisuraci\u00f3n en vigas"},"content":{"rendered":"<p>Corresponden por norma general a las patolog\u00edas m\u00e1s graves, ya que se pueden aproximar a un estado l\u00edmite \u00faltimo en funci\u00f3n de su progreso. La fisuraci\u00f3n en si misma no es un indicio alarmante, s\u00ed su progresi\u00f3n.<\/p>\n<p>El estudio en piezas flexadas de hormig\u00f3n tiene dos estados que se diferencian porque la pieza pasa de un primer estado natural a un segundo estado fisurado, sin que implique patolog\u00eda.<\/p>\n<p>Estudiando el avance de la fisuraci\u00f3n determinamos si se trata de situaci\u00f3n de estado de alarma. Las fisuras no son producidas, por norma general, por un solo esfuerzo, por lo que las indicaciones que se aportan m\u00e1s abajo son orientaciones cuando predomina un esfuerzo sobre otro, atendiendo al funcionamiento normal del mismo.<\/p>\n<p>[youtube_sc url=\u00bbhttp:\/\/youtu.be\/4ni2oWDNgAA\u00bb]<\/p>\n<p><strong>Fisuraci\u00f3n en vigas producidas por flectores<\/strong><\/p>\n<ul>\n<li>fisuras producidas por momento flector en el apoyo: la fisura se inicia en la fibra inferior y progresa verticalmente hasta coincidir con la l\u00ednea neutra que se curva hacia el medio del vano. Generalmente aparecen varias y juntas. Su progresi\u00f3n es muy lenta y puede \u00a0reducirse visualmente cuando decrece la carga.<\/li>\n<li>fisuraci\u00f3n producida en flexi\u00f3n simple: se producen las fisuras en la zona central del vano, con una direcci\u00f3n que apunta a la zona de aplicaci\u00f3n de la carga.<\/li>\n<li>fisuraci\u00f3n por flexi\u00f3n compuesta. Las fisuras aparecen en horizontal.<\/li>\n<\/ul>\n<p><em>En estos casos donde se produce la fisuraci\u00f3n por flexi\u00f3n se debe apuntalar y reforzar.<\/em><\/p>\n<p><strong>Fisuraci\u00f3n en vigas producida por cortante<\/strong><\/p>\n<ul>\n<li>Las fisuras comienzan en el alma de la viga formando 45\u00ba con la direcci\u00f3n que apunta al apoyo. Progresan hacia la armadura y luego hacia la carga, dividiendo la pieza en dos y provocando colapso en el momento que la armadura ceda.<\/li>\n<\/ul>\n<p><em>Estas fisuras evolucionan de forma r\u00e1pida, por lo que son m\u00e1s peligrosas. Si se detectan a tiempo se debe apuntalar fuertemente y reforzar.<\/em><\/p>\n<p><strong>Fisuraci\u00f3n en vigas por torsi\u00f3n<\/strong><\/p>\n<ul>\n<li><span style=\"line-height: 13px;\" data-mce-mark=\"1\">Se parece en su aspecto a las fisuraciones debidas a cortante, pero se detecta que en funci\u00f3n de la cara tienen distinta orientaci\u00f3n.\u00a0<\/span><\/li>\n<\/ul>\n<p><strong>Fisuraci\u00f3n por error en el armado<\/strong><\/p>\n<ul>\n<li><span style=\"line-height: 13px;\" data-mce-mark=\"1\">Si se sit\u00faa en la parte superior de la viga y pr\u00f3xima al pilar o muro, la fisura puede ser producida por desplazamiento en las armaduras. Si se produce en la parte superior de la viga, pero a cierta distancia del apoyo, se presume que el anclaje es insuficiente.<\/span><\/li>\n<\/ul>\n<p><strong>Fisuraci\u00f3n por oxidaci\u00f3n del armado <\/strong>(el origen no es estructural)<\/p>\n<ul>\n<li><span style=\"line-height: 13px;\">Se producen fisuraciones coincidentes con la l\u00ednea de armado. La oxidaci\u00f3n puede ser producida por la \u00a0humedad presente en el ambiente cuando el hormig\u00f3n (despues de una carbonataci\u00f3n) deja de protegerlas.\u00a0<\/span><\/li>\n<\/ul>\n<p>Documentaci\u00f3n de referencia: Clases de Estructuras de Hormig\u00f3n por J. P. Valc\u00e1rcel<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Corresponden por norma general a las patolog\u00edas m\u00e1s graves, ya que se pueden aproximar a un estado l\u00edmite \u00faltimo en funci\u00f3n de su progreso. La fisuraci\u00f3n en si misma no es un indicio alarmante, s\u00ed su progresi\u00f3n. El estudio en piezas flexadas de hormig\u00f3n tiene dos estados que se diferencian porque la pieza pasa de&hellip;&nbsp;<a href=\"https:\/\/teoriadeconstruccion.net\/blog\/progresion-de-la-fisuracion-en-vigas\/\" rel=\"bookmark\">Leer m\u00e1s &raquo;<span class=\"screen-reader-text\">Progresi\u00f3n de la fisuraci\u00f3n en vigas<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":2727,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[62,63,80],"tags":[],"class_list":["post-2726","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ensayo","category-estructuras","category-hormigon"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Progresi\u00f3n de la fisuraci\u00f3n en vigas - Teor\u00eda de construcci\u00f3n<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/teoriadeconstruccion.net\/blog\/progresion-de-la-fisuracion-en-vigas\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Progresi\u00f3n de la fisuraci\u00f3n en vigas - Teor\u00eda de construcci\u00f3n\" \/>\n<meta property=\"og:description\" content=\"Corresponden por norma general a las patolog\u00edas m\u00e1s graves, ya que se pueden aproximar a un estado l\u00edmite \u00faltimo en funci\u00f3n de su progreso. La fisuraci\u00f3n en si misma no es un indicio alarmante, s\u00ed su progresi\u00f3n. El estudio en piezas flexadas de hormig\u00f3n tiene dos estados que se diferencian porque la pieza pasa de&hellip;&nbsp;Leer m\u00e1s &raquo;Progresi\u00f3n de la fisuraci\u00f3n en vigas\" \/>\n<meta property=\"og:url\" content=\"https:\/\/teoriadeconstruccion.net\/blog\/progresion-de-la-fisuracion-en-vigas\/\" \/>\n<meta property=\"og:site_name\" content=\"Teor\u00eda de construcci\u00f3n\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/teoriadeconstru\" \/>\n<meta property=\"article:published_time\" content=\"2013-01-31T20:03:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2013-02-24T10:25:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i1.wp.com\/teoriadeconstruccion.net\/blog\/wp-content\/uploads\/2013\/01\/ensayo-viga.jpg?fit=276%2C275&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"276\" \/>\n\t<meta property=\"og:image:height\" content=\"275\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"luissantalla\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@teoriadeconstru\" \/>\n<meta name=\"twitter:site\" content=\"@teoriadeconstru\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"luissantalla\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/progresion-de-la-fisuracion-en-vigas\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/progresion-de-la-fisuracion-en-vigas\\\/\"},\"author\":{\"name\":\"luissantalla\",\"@id\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/#\\\/schema\\\/person\\\/97bc651383e78ac257b38d0846ac73ca\"},\"headline\":\"Progresi\u00f3n de la fisuraci\u00f3n en vigas\",\"datePublished\":\"2013-01-31T20:03:37+00:00\",\"dateModified\":\"2013-02-24T10:25:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/progresion-de-la-fisuracion-en-vigas\\\/\"},\"wordCount\":493,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/progresion-de-la-fisuracion-en-vigas\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/teoriadeconstruccion.net\\\/blog\\\/wp-content\\\/uploads\\\/2013\\\/01\\\/ensayo-viga.jpg?fit=276%2C275&ssl=1\",\"articleSection\":[\"ensayo\",\"estructuras\",\"hormig\u00f3n\"],\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/progresion-de-la-fisuracion-en-vigas\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/progresion-de-la-fisuracion-en-vigas\\\/\",\"url\":\"https:\\\/\\\/teoriadeconstruccion.net\\\/blog\\\/progresion-de-la-fisuracion-en-vigas\\\/\",\"name\":\"Progresi\u00f3n de la fisuraci\u00f3n en vigas - 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