{"id":21554,"date":"2026-07-08T11:56:47","date_gmt":"2026-07-08T09:56:47","guid":{"rendered":"https:\/\/citeni.udc.es\/?p=21554"},"modified":"2026-07-08T12:12:31","modified_gmt":"2026-07-08T10:12:31","slug":"un-equipo-do-citeni-desenvolve-un-novo-modelo-de-calculo-para-desenar-unions-metalicas-con-parafusos-pasantes","status":"publish","type":"post","link":"https:\/\/citeni.udc.es\/gl\/un-equipo-do-citeni-desenvolve-un-novo-modelo-de-calculo-para-desenar-unions-metalicas-con-parafusos-pasantes\/","title":{"rendered":"Un equipo do CITENI desenvolve un novo modelo de c\u00e1lculo para dese\u00f1ar uni\u00f3ns met\u00e1licas con parafusos pasantes"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"21554\" class=\"elementor elementor-21554 elementor-21534\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-578e4c3e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"578e4c3e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-df10dff\" data-id=\"df10dff\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6b0648e elementor-widget elementor-widget-tp-heading\" data-id=\"6b0648e\" data-element_type=\"widget\" data-widget_type=\"tp-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t\n                    <div class=\"tp-section\">\n                                <span class=\"tp-section__sub-title left-line right-line mb-25 tp-el-subtitle\">\n                    A investigaci\u00f3n prop\u00f3n unha ferramenta de c\u00e1lculo que permite representar con maior precisi\u00f3n o comportamento estrutural dunha tipolox\u00eda de uni\u00f3n en estruturas de aceiro baseada en parafusos, con aplicaci\u00f3ns directas no dese\u00f1o e a verificaci\u00f3n de conexi\u00f3ns en edificaci\u00f3n e enxe\u00f1ar\u00eda civil.                <\/span>\n                                                            <\/div>\n        \n        \n        \t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-492bf94 elementor-widget elementor-widget-tp-heading\" data-id=\"492bf94\" data-element_type=\"widget\" data-widget_type=\"tp-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t\n                    <div class=\"tp-section\">\n                                <span class=\"tp-section__sub-title left-line right-line mb-25 tp-el-subtitle\">\n                    O traballo foi desenvolvido por un equipo do Laboratorio de An\u00e1lise Estrutural (LAE), integrado no Centro de Investigaci\u00f3n en Tecnolox\u00edas Navais e Industriais (CITENI) do Campus Industrial de Ferrol da Universidade da Coru\u00f1a, e combina ensaios experimentais, simulaci\u00f3n num\u00e9rica e modelizaci\u00f3n mec\u00e1nica.                <\/span>\n                                                            <\/div>\n        \n        \n        \t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4263ca08 elementor-widget elementor-widget-text-editor\" data-id=\"4263ca08\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>As uni\u00f3ns entre vigas e piares son elementos fundamentais nas estruturas met\u00e1licas, xa que condicionan a forma en que se transmiten os esforzos e a resposta global de edificios, naves industriais e outras infraestruturas de aceiro. Comprender mellor o seu comportamento e dispo\u00f1er de ferramentas de c\u00e1lculo m\u00e1is precisas segue a ser un dos grandes retos da enxe\u00f1ar\u00eda estrutural actual.<\/p><p>O equipo do Laboratorio de An\u00e1lise Estrutural (LAE) do Centro de Investigaci\u00f3n en Tecnolox\u00edas Navais e Industriais (CITENI) presenta un novo modelo de c\u00e1lculo para analizar o comportamento dunha tipolox\u00eda de uni\u00f3n met\u00e1lica baseada no uso de parafusos longos ou pasantes que atravesan o elemento estrutural.<\/p><p>O traballo foi desenvolvido polo investigador Manuel L\u00f3pez, xunto con Alfonso Loureiro, Ruth M. Guti\u00e9rrez e Jos\u00e9 M. Reinosa e os resultados public\u00e1ronse na revista cient\u00edfica Steel and Composite Structures (Techno-Press), especializada en enxe\u00f1ar\u00eda estrutural, baixo o t\u00edtulo: \u201cMechanical model for stiffness calculation of the column tension zone in double-sided joints assembled with long bolts\u201d.<\/p><p><strong>Unha alternativa aos reforzos tradicionais<\/strong><\/p><p>A soluci\u00f3n estudada pres\u00e9ntase como unha alternativa aos chamados rixidizadores soldados, que son pezas adicionais que se incorporan \u00e1s uni\u00f3ns de aceiro para reforzalas e limitar as deformaci\u00f3ns da conexi\u00f3n. O emprego de parafusos pasantes, ademais de incrementar a rixidez e a capacidade de resistencia da conexi\u00f3n, permite simplificar o proceso construtivo e reducir custos de fabricaci\u00f3n e montaxe.<\/p><p>Desde o punto de vista ambiental, esta configuraci\u00f3n facilita a desmontaxe das estruturas e a reutilizaci\u00f3n dos seus compo\u00f1entes ao final da s\u00faa vida \u00fatil, en li\u00f1a cos principios do dese\u00f1o para a deconstruci\u00f3n e a econom\u00eda circular.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a341e98 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a341e98\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-aa68eb8\" data-id=\"aa68eb8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-07b03b8 elementor-widget elementor-widget-image\" data-id=\"07b03b8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/citeni.udc.es\/wp-content\/uploads\/2026\/07\/News-LAE-3.jpg\" class=\"attachment-full size-full wp-image-21540\" alt=\"De izquierda la derecha, Ruth M. Guti\u00e9rrez, Manuel L\u00f3pez y Jos\u00e9 M. Reinosa, integrantes del equipo del Laboratorio de An\u00e1lisis Estructural (LAE) y coautores del estudio sobre un nuevo modelo de c\u00e1lculo para uniones met\u00e1licas con tornillos pasantes.\" srcset=\"https:\/\/citeni.udc.es\/wp-content\/uploads\/2026\/07\/News-LAE-3.jpg 800w, https:\/\/citeni.udc.es\/wp-content\/uploads\/2026\/07\/News-LAE-3-300x200.jpg 300w, https:\/\/citeni.udc.es\/wp-content\/uploads\/2026\/07\/News-LAE-3-768x512.jpg 768w, https:\/\/citeni.udc.es\/wp-content\/uploads\/2026\/07\/News-LAE-3-500x333.jpg 500w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b185a87 elementor-widget elementor-widget-text-editor\" data-id=\"b185a87\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"color: #7a7a7a;\"><em>* De esquerda a dereita, Ruth M. Guti\u00e9rrez, Manuel L\u00f3pez e Jos\u00e9 M. Reinosa, integrantes do equipo do Laboratorio de An\u00e1lise Estrutural (LAE) e coautores do estudo sobre un novo modelo de c\u00e1lculo para uni\u00f3ns met\u00e1licas con parafusos pasantes.<\/em><\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-deee162 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"deee162\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-fa3a268\" data-id=\"fa3a268\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a383871 elementor-widget elementor-widget-text-editor\" data-id=\"a383871\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>Unha zona clave no comportamento da uni\u00f3n<\/strong><\/p><p>A investigaci\u00f3n c\u00e9ntrase na denominada zona de tracci\u00f3n do piar, a parte do perfil que tende a estirarse cando a uni\u00f3n soporta carga e que ten unha influencia clave no comportamento global da conexi\u00f3n. Para analizala, o equipo desenvolveu un modelo mec\u00e1nico baseado no m\u00e9todo dos compo\u00f1entes, amplamente utilizado na normativa europea de estruturas de aceiro. <\/p><p>Este modelo permite estimar de forma simplificada a rixidez da uni\u00f3n a partir da combinaci\u00f3n de tres achegas: o comportamento dos parafusos en tracci\u00f3n, a flexi\u00f3n da \u00e1 do piar (\u00e9 dicir, da parte horizontal do perfil met\u00e1lico, en forma de H ou I), e a deformaci\u00f3n da alma do perfil (a parte central que conecta as d\u00faas \u00e1s verticalmente).<\/p><p><strong>Ensaios experimentais e simulaci\u00f3n avanzada<\/strong><\/p><p>Para validar a formulaci\u00f3n proposta realiz\u00e1ronse seis ensaios experimentais sobre probetas que reproducen o comportamento desta zona da uni\u00f3n. Nestes ensaios rexistr\u00e1ronse curvas de carga e deformaci\u00f3n que permiten caracterizar a resposta estrutural do sistema. <\/p><p>Os resultados complement\u00e1ronse con modelos num\u00e9ricos de elementos finitos, desenvolvidos e calibrados a partir dos datos experimentais, que reproducen con alta precisi\u00f3n o comportamento observado no laboratorio.<\/p><p>O estudo mostra ademais que os parafusos pasantes absorben a maior parte dos esforzos transmitidos pola uni\u00f3n: chegan a soportar de media arredor do 84 % da carga total.<\/p><p><strong>Cara a estruturas m\u00e1is eficientes e sostibles <\/strong><\/p><p>Os resultados obtidos achegan unha ferramenta \u00fatil para dese\u00f1ar uni\u00f3ns met\u00e1licas m\u00e1is eficientes e predicibles, o que ampliar\u00e1 as opci\u00f3ns dispo\u00f1ibles para a pr\u00e1ctica profesional da enxe\u00f1ar\u00eda estrutural.<\/p><p>Ao mesmo tempo, contrib\u00faen a avanzar cara a estruturas m\u00e1is sostibles, ao reducir a dependencia de soluci\u00f3ns soldadas permanentes e favorecer a reutilizaci\u00f3n dos elementos estruturais.<\/p><p>Con este traballo, o Laboratorio de An\u00e1lise Estrutural do CITENI contin\u00faa a s\u00faa li\u00f1a de investigaci\u00f3n orientada ao desenvolvemento de metodolox\u00edas de c\u00e1lculo aplicables \u00e1 pr\u00e1ctica profesional, e reforza o papel do Campus Industrial de Ferrol como centro de referencia en investigaci\u00f3n en enxe\u00f1ar\u00eda estrutural.<\/p><p><strong>Referencia cient\u00edfica <\/strong><\/p><p>Manuel L\u00f3pez L\u00f3pez, Alfonso Loureiro, Ruth M. Guti\u00e9rrez e Jos\u00e9 M. Reinosa. Mechanical model for stiffness calculation of the column tension zone in double-sided joints assembled with long bolts. <\/p><p><a href=\"https:\/\/doi.org\/10.12989\/scs.2026.59.4.557\">https:\/\/doi.org\/10.12989\/scs.2026.59.4.557<\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c659153 elementor-widget elementor-widget-spacer\" data-id=\"c659153\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>A investigaci\u00f3n prop\u00f3n unha ferramenta de c\u00e1lculo que permite representar con maior precisi\u00f3n o comportamento estrutural dunha tipolox\u00eda de uni\u00f3n en estruturas de aceiro baseada en parafusos, con aplicaci\u00f3ns directas no dese\u00f1o e a verificaci\u00f3n de conexi\u00f3ns en edificaci\u00f3n e enxe\u00f1ar\u00eda civil.<\/p>\n","protected":false},"author":6,"featured_media":21551,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_vp_format_video_url":"","_vp_image_focal_point":{"x":0.70999999999999996,"y":0.27000000000000002},"footnotes":""},"categories":[96],"tags":[],"class_list":["post-21554","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novas"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - 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