{"id":364,"date":"2012-04-23T09:20:40","date_gmt":"2012-04-23T08:20:40","guid":{"rendered":"https:\/\/blogs.ua.es\/jjrr2011\/?p=364"},"modified":"2012-05-11T16:55:29","modified_gmt":"2012-05-11T15:55:29","slug":"tema-10","status":"publish","type":"post","link":"https:\/\/blogs.ua.es\/jjrr2011\/2012\/04\/23\/tema-10\/","title":{"rendered":"TEMA 10. Entramats articulats plans"},"content":{"rendered":"<p style=\"text-align: justify\">En aquest cap\u00edtol estudiarem les <strong>forces<\/strong> i <strong>moments<\/strong> necessaris perqu\u00e8 els entramats articulats plans romanguen est\u00e0tics. Haurem d&#8217;esquematitzar les estructures identificant les c\u00e0rregues que li s\u00f3n aplicades i calculant tant les forces que suporten els seus distints elements, com, si \u00e9s el cas, les <strong>reaccions<\/strong> en els seus <strong>suports<\/strong>. S&#8217;aplicar\u00e0 el <strong>concepte d&#8217;equilibri<\/strong> de forces en sistemes estructurals isost\u00e0tics, plans o reductibles a plans aix\u00ed com els <strong>conceptes b\u00e0sics relatius als esfor\u00e7os<\/strong> interns axials en les barres que componen l&#8217;entramat articulat pla.<\/p>\n<p style=\"text-align: justify\">Dins l&#8217;\u00e0mbit de les construccions arquitect\u00f2niques, els entramats articulats plans estan formats per barres coplan\u00e0ries unides entre si per articulacions. Els <strong>ponts<\/strong>, les <strong>encavallades<\/strong>, les <strong>bigues<\/strong>, les <strong>grues<\/strong> i altres estructures semblants s\u00f3n un <strong>exemple<\/strong> corrent d&#8217;<strong>entramats<\/strong>. L&#8217;<strong>objectiu<\/strong> fonamental \u00e9s la <strong>resoluci\u00f3 de l&#8217;entramat<\/strong>, \u00e9s a dir, obtenir les reaccions en els seus suports i les forces internes axials sobre els membres de l&#8217;estructura. En aquest estudi caldr\u00e0 saber les <strong>hip\u00f2tesis simplificadores<\/strong> utilitzades en aquesta resoluci\u00f3, els diferents tipus d&#8217;entramats articulats bidimensionals i els <strong>m\u00e8todes de resoluci\u00f3<\/strong> que s&#8217;utilitzaran tant <strong>anal\u00edtics<\/strong> (m\u00e8tode dels <strong>nusos<\/strong> i <strong>Ritter<\/strong>) com <strong>gr\u00e0fics<\/strong> (m\u00e8tode gr\u00e0fic del <strong>diagrama Maxwell-Cremona<\/strong>).<\/p>\n<p style=\"text-align: justify\">Un document amb un resum del contingut te\u00f2ric d&#8217;elasticitat i esfor\u00e7os en elements estructurals es pot descarregar des de l\u2019adre\u00e7a electr\u00f2nica del Repositori Institucional de la Universitat d\u2019Alacant: <a href=\"http:\/\/rua.ua.es\/dspace\/handle\/10045\/22316\">http:\/\/rua.ua.es\/dspace\/handle\/10045\/22316<\/a>. Podeu consultar la presentaci\u00f3 corresponent a la sessi\u00f3 de teoria d&#8217;entramats articulats plans en l\u2019adre\u00e7a electr\u00f2nica <a href=\"http:\/\/hdl.handle.net\/10045\/21913\">http:\/\/hdl.handle.net\/10045\/21913<\/a>.<\/p>\n<p style=\"text-align: justify\"><strong>Bibliografia<\/strong><\/p>\n<p style=\"text-align: justify\">Rodes Roca, J. J., Dur\u00e1 Dom\u00e9nech, A. i Vera Guarinos, J., <em>Fonaments f\u00edsics de les construccions arquitect\u00f2niques<\/em> (Publicacions de la Universitat d\u2019Alacant, Alacant, 2011). Cap\u00edtol 11.<\/p>\n<p style=\"text-align: justify\">Rodes Roca, J. J., <em>Exercicis i problemes dels fonaments f\u00edsics d\u2019arquitectura. I. Vectors lliscants i geometria de masses<\/em> (ECU, Alacant, 2009)<\/p>\n<p style=\"text-align: justify\">Tipler, P. A. i Mosca, G., F\u00edsica per a la ci\u00e8ncia i la tecnologia, Volum 1 (Revert\u00e9, Barcelona, 2010). Cap\u00edtols 1 i 12.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En aquest cap\u00edtol estudiarem les forces i moments necessaris perqu\u00e8 els entramats articulats plans romanguen est\u00e0tics. Haurem d&#8217;esquematitzar les estructures identificant les c\u00e0rregues que li s\u00f3n aplicades i calculant tant les forces que suporten els seus distints elements, com, si \u00e9s el cas, les reaccions en els seus suports. S&#8217;aplicar\u00e0 el concepte d&#8217;equilibri de forces [&hellip;]<\/p>\n","protected":false},"author":2285,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82858,82859,676],"tags":[82856,135912,82857,91078],"class_list":["post-364","post","type-post","status-publish","format-standard","hentry","category-assignatura-2","category-objectius","category-sin-categoria","tag-assignatura","tag-ensenyament-aprenentatge","tag-grau","tag-materials"],"_links":{"self":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts\/364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/users\/2285"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/comments?post=364"}],"version-history":[{"count":8,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts\/364\/revisions"}],"predecessor-version":[{"id":390,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/posts\/364\/revisions\/390"}],"wp:attachment":[{"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/media?parent=364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/categories?post=364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ua.es\/jjrr2011\/wp-json\/wp\/v2\/tags?post=364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}