{"id":16482,"date":"2025-02-04T11:16:30","date_gmt":"2025-02-04T14:16:30","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=16482"},"modified":"2025-02-04T11:16:30","modified_gmt":"2025-02-04T14:16:30","slug":"analisis-de-danos-en-vigas-de-hormigon-armado-bajo-efectos-explosivos-de-diferentes-formas-equivalentes-y-distancias","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=16482","title":{"rendered":"An\u00e1lisis de da\u00f1os en vigas de hormig\u00f3n armado bajo efectos explosivos de diferentes formas, equivalentes y distancias"},"content":{"rendered":"<p>La optimizaci\u00f3n de la resistencia estructural contra cargas explosivas depende cr\u00edticamente de los efectos de diferentes formas, equivalentes y distancias de explosivos en las caracter\u00edsticas de da\u00f1o de las vigas de hormig\u00f3n armado. El estudio de la referencia, producido por investigadores de la Universidad de Ningbo en China,\u00a0busca la comprensi\u00f3n de c\u00f3mo estos factores influyen en los mecanismos de da\u00f1o, a trav\u00e9s de experimentos de explosi\u00f3n en aire a corta distancia y simulaciones num\u00e9ricas LS-DYNA. Se analizaron las caracter\u00edsticas claves del da\u00f1o, como cr\u00e1teres, sobrepresi\u00f3n, impulso, desplazamiento hist\u00f3rico-temporal y desplazamiento residual en el centro del tramo de vigas de hormig\u00f3n armado. Los resultados muestran que los explosivos con forma de\u00a0cuboide\u00a0causan el mayor da\u00f1o, y los efectos m\u00e1s graves se observan a distancias m\u00e1s cortas y pesos de carga m\u00e1s altos. El estudio destaca el papel fundamental de la geometr\u00eda explosiva, el peso de la carga y la distancia de separaci\u00f3n en la propagaci\u00f3n de ondas de choque y falla estructural y propone un criterio de da\u00f1o optimizado para mejorar las capacidades predictivas de las vigas de hormig\u00f3n armado bajo cargas explosivas.<\/p>\n<hr \/>\n<p><strong>Abstract<\/strong><\/p>\n<p>Optimizing structural resistance against blast loads critically depends on the effects of different explosive shapes, equivalents, and distances on the damage characteristics of reinforced concrete beams. This study bridges the knowledge gap in understanding how these factors influence damage mechanisms through close-range air blast experiments and LS-DYNA numerical simulations. Key damage characteristics, such as craters, overpressure, impulse, time-history displacement, and residual mid-span displacement of reinforced concrete beams, were thoroughly analyzed. Results show that cuboid-shaped explosives cause the greatest damage, with the most severe effects observed at shorter distances and higher charge weights, including an increase in mid-span displacement of up to 16.3 cm. The study highlights the pivotal role of explosive geometry, charge weight, and standoff distance in shock wave propagation and structural failure and proposes an optimized damage criterion to enhance predictive capabilities for reinforced concrete beams under blast loads.<\/p>\n<p><a href=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2025\/02\/buildings-15-00452.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" class=\"aligncenter wp-image-5168\" src=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png\" alt=\"Descargar archivo pdf\" width=\"75\" height=\"93\" srcset=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png 243w, https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1.png 310w\" sizes=\"(max-width: 75px) 100vw, 75px\" \/><\/a><strong>Fuente: <\/strong><a href=\"https:\/\/www.mdpi.com\/2075-5309\/15\/3\/452\" target=\"_blank\" rel=\"noopener\"><em>https:\/\/www.mdpi.com<\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La optimizaci\u00f3n de la resistencia estructural contra cargas explosivas depende cr\u00edticamente de los efectos de diferentes formas, equivalentes y distancias de explosivos en las caracter\u00edsticas&hellip; <\/p>\n","protected":false},"author":1,"featured_media":16484,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[18,28,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/16482"}],"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=16482"}],"version-history":[{"count":1,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/16482\/revisions"}],"predecessor-version":[{"id":16485,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/16482\/revisions\/16485"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/16484"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}