{"id":993,"date":"2011-05-03T21:06:19","date_gmt":"2011-05-03T21:06:19","guid":{"rendered":"http:\/\/teoriadeconstruccion.com\/?p=993"},"modified":"2011-05-03T21:06:19","modified_gmt":"2011-05-03T21:06:19","slug":"licuefaccion","status":"publish","type":"post","link":"https:\/\/teoriadeconstruccion.net\/blog\/licuefaccion\/","title":{"rendered":"Licuefacci\u00f3n"},"content":{"rendered":"<p>La licuefacci\u00f3n de los suelos es un proceso observado en situaciones en que la presi\u00f3n de poros es tan elevada que el agregado de part\u00edculas pierde toda la resistencia al corte, perdidendo capacidad portante y produciendo emanaci\u00f3nes de agua a la superficie. Se producen en suelos granulares:<\/p>\n<ul>\n<li>arenas limosas saturadas<\/li>\n<li>arenas muy finas redondeadas<\/li>\n<li>arenas limpias<\/li>\n<li>rellenos mineros<\/li>\n<\/ul>\n<p>Debido a la gran cantidad de agua intersticial que presentan, las presiones intersticiales son tan elevadas que un s\u00edsmo, o una carga din\u00e1mica, o la elevaci\u00f3n del nivel fre\u00e1tico, pueden aumentarlas, llegando a anular las tensiones efectivas. Esto motiva que las tensiones tangenciales se anulen, comport\u00e1ndose el terreno como un \u00abpseudol\u00edquido\u00bb.<\/p>\n<p>[youtube http:\/\/www.youtube.com\/watch?v=KLZFlnND0hA&amp;w=405&amp;h=390]<\/p>\n<p>(imagenes del terremoto de Nigata, Jap\u00f3n, 1964)<\/p>\n<p>La p\u00e9rdida de resistencia del suelo hace que las estructuras sean incapaces de mantenerse estables, siendo arrastradas sobre la masa de suelo l\u00edquido.<\/p>\n<p>[youtube http:\/\/www.youtube.com\/watch?v=neB4JLtX6tM&amp;w=405&amp;h=390]<\/p>\n<p>El limitado conocimiento relativo a este fen\u00f3meno se debe en gran parte a dos factores:<\/p>\n<ul>\n<li>Dificultad en observar sus caracter\u00edsticas en condiciones reales.<\/li>\n<li>Complejidad del fen\u00f3meno, pues para adem\u00e1s de ser el resultado de una acci\u00f3n s\u00edmica de car\u00e1cter altamente variable, induce en el suelo un comportamiento fuertemente no lineal e hister\u00e9tico, con fuerte degradaci\u00f3n de las caracter\u00edsticas mec\u00e1nicas del suelo de cada ciclo determinada por la generaci\u00f3n de presiones neutras en la muestra bajo acci\u00f3n s\u00edsmica.<\/li>\n<\/ul>\n<p>Uno de los problemas fundamentales es el conocimiento rudimentario sobre los mecanismos de rotura y deformaci\u00f3n asociados al fen\u00f3meno de la licuefacci\u00f3n, lo que limita el uso de ensayos elementales para estudiarlo (las conclusiones pueden ser adulteradas si los mecanismos inducidos en laboratorio difieren de los in situ).<\/p>\n<p>[youtube http:\/\/www.youtube.com\/watch?v=rGC5R1Xq9dg&amp;w=405&amp;h=390] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>La licuefacci\u00f3n de los suelos es un proceso observado en situaciones en que la presi\u00f3n de poros es tan elevada que el agregado de part\u00edculas pierde toda la resistencia al corte, perdidendo capacidad portante y produciendo emanaci\u00f3nes de agua a la superficie. Se producen en suelos granulares: arenas limosas saturadas arenas muy finas redondeadas arenas&hellip;&nbsp;<a href=\"https:\/\/teoriadeconstruccion.net\/blog\/licuefaccion\/\" rel=\"bookmark\">Leer m\u00e1s &raquo;<span class=\"screen-reader-text\">Licuefacci\u00f3n<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"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":[162],"tags":[302,326,364,389,625,464],"class_list":["post-993","post","type-post","status-publish","format-standard","hentry","category-terreno","tag-estructura","tag-fukushima","tag-licuefaccion","tag-nigata","tag-suelo","tag-terremoto"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Licuefacci\u00f3n - 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\/licuefaccion\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Licuefacci\u00f3n - Teor\u00eda de construcci\u00f3n\" \/>\n<meta property=\"og:description\" content=\"La licuefacci\u00f3n de los suelos es un proceso observado en situaciones en que la presi\u00f3n de poros es tan elevada que el agregado de part\u00edculas pierde toda la resistencia al corte, perdidendo capacidad portante y produciendo emanaci\u00f3nes de agua a la superficie. 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