{"id":15885,"date":"2024-11-13T07:28:15","date_gmt":"2024-11-13T10:28:15","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=15885"},"modified":"2024-11-13T07:28:15","modified_gmt":"2024-11-13T10:28:15","slug":"analisis-de-las-caracteristicas-del-dano-en-losas-de-hormigon-armado-bajo-impacto-explosivo-e-investigacion-sobre-el-refuerzo-de-prfc","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=15885","title":{"rendered":"An\u00e1lisis de las caracter\u00edsticas del da\u00f1o en losas de hormig\u00f3n armado bajo impacto explosivo e investigaci\u00f3n sobre el refuerzo de PRFC"},"content":{"rendered":"

Este estudio investiga las caracter\u00edsticas de da\u00f1o y el modelado de losas de hormig\u00f3n armado (RC) bajo impacto explosivo. Los investigadores analizaron los modos de falla de las losas de RC expuestas a explosiones de campo cercano y\u00a0<\/span>de contacto, revelando que las explosiones de campo cercano causan principalmente un descascarillado menor en la cara frontal y colapso s\u00edsmico con agrietamiento radial en la parte posterior. En las explosiones de contacto, la cara frontal de las losas de RC desarrolla picaduras de explosi\u00f3n, mientras que la cara posterior experimenta un colapso s\u00edsmico y da\u00f1o por descascarillado m\u00e1s severos. Para modelar este comportamiento, los investigadores utilizaron el enfoque euleriano-lagrangiano acoplado (CEL) en el software AUTODYN, validando el modelo comparando sus resultados con datos experimentales. Adem\u00e1s, desarrollaron un modelo que incorpora refuerzo de pol\u00edmero reforzado con fibra de carbono (CFRP) y examinaron c\u00f3mo varios espesores de CFRP y configuraciones de refuerzo impactan la resistencia a las explosiones. Los hallazgos muestran que el CFRP puede mejorar significativamente la resistencia a las explosiones de las losas de RC, con un espesor \u00f3ptimo que proporciona el mejor rendimiento.<\/p>\n

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To study the damage characteristics and damage model of reinforced concrete slabs under explosive impact, the failure modes of reinforced concrete slabs under near-field and contact explosion were first studied through on-site experiments. A coupled model was established based on the Coupled Eulerian-Lagrangian (CEL) method using AUTODYN finite element software. The reliability of the model was verified by comparing the numerical simulation results with experimental results. Based on this, a fully coupled model of Carbon Fiber Reinforced Polymer (CFRP) reinforcement for reinforced concrete slabs under contact explosion was established, and the influence of different CFRP thicknesses and reinforcement methods on the blast resistance performance of reinforced concrete slabs was discussed. The research results indicate that under the action of near-field explosions, the front face of reinforced concrete slabs mainly experiences slight peeling damage, and the central area of the back face forms seismic collapse and peeling damage, with damage cracks diverging from the center to the surrounding areas; Under the action of contact explosion, the front face of the reinforced concrete slab produces blast pits, the back face forms a seismic collapse zone, and peeling damage occurs; The CFRP reinforcement layer can improve the blast resistance performance of reinforced concrete slabs; There is an optimal thickness when using CFRP to enhance the blast resistance of reinforced concrete slabs.<\/p>\n

\"Descargar<\/a>Fuente:<\/strong> https:\/\/www.frontiersin.org<\/em><\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Este estudio investiga las caracter\u00edsticas de da\u00f1o y el modelado de losas de hormig\u00f3n armado (RC) bajo impacto explosivo. Los investigadores analizaron los modos de… <\/p>\n","protected":false},"author":1,"featured_media":15886,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[28,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/15885"}],"collection":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15885"}],"version-history":[{"count":2,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/15885\/revisions"}],"predecessor-version":[{"id":15890,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/15885\/revisions\/15890"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/15886"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}