{"id":9661,"date":"2023-06-23T15:20:11","date_gmt":"2023-06-23T13:20:11","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/pt\/success-stories\/er338-km-031970\/"},"modified":"2024-11-13T14:59:35","modified_gmt":"2024-11-13T13:59:35","slug":"er338-km-031970","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/pt\/success-stories\/er338-km-031970\/","title":{"rendered":"ER338, KM 031+970"},"content":{"rendered":"
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Problem<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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A zona em quest\u00e3o localiza-se na Estrada Regional 338, Km 031+970, t\u00fanel rodovi\u00e1rio escavado no maci\u00e7o rochoso da Serra da Estrela a 1700m de altitude que d\u00e1 acesso \u00e0 Torre, no distrito da Guarda, esta estrada \u00e9 uma via de acesso principal ao maci\u00e7o central. \u201cO t\u00fanel encontra-se escavado num maci\u00e7o rochoso pouco a medianamente alterado (W2 a W3) e com uma resist\u00eancia elevada a muito elevada (R4 a R5). Por se tratar de um t\u00fanel escavado num maci\u00e7o rochoso de boa qualidade e sem aplica\u00e7\u00e3o de qualquer suporte, a principal patologia deste t\u00fanel est\u00e1 associada \u00e0 compartimenta\u00e7\u00e3o do maci\u00e7o rochoso, cujas descontinuidades evidenciam um afastamento tipo F3 a F4 (medianamente afastadas a pr\u00f3ximas), o que se traduz na forma\u00e7\u00e3o de blocos de pequena a m\u00e9dia dimens\u00e3o, maioritariamente, com viabilidade cinem\u00e1tica, ou seja, inst\u00e1veis e em risco de queda.\u201d de acordo com o exposto no Relat\u00f3rio de Caracteriza\u00e7\u00e3o da Situa\u00e7\u00e3o Existente. <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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Solution<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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O Relat\u00f3rio contemplava duas solu\u00e7\u00f5es possiveis a Solu\u00e7\u00e3o A execu\u00e7\u00e3o de um revestimento em bet\u00e3o armado, com capacidade de suportar a massa dos blocos e a Solu\u00e7\u00e3o B \u2013 constitu\u00edda pela aplica\u00e7\u00e3o de uma malha de pregagens e cabos met\u00e1licos, por forma a estabilizar os blocos de maior dimens\u00e3o, complementada pela aplica\u00e7\u00e3o de uma rede de dupla tor\u00e7\u00e3o e a sobreposi\u00e7\u00e3o de uma rede de alta resist\u00eancia que conter\u00e1 os blocos de menor dimens\u00e3o. Optou-se pela solu\u00e7\u00e3o B, devido \u00e0 irregularidade das paredes do t\u00fanel o que resultaria num amento significativo do volume de bet\u00e3o necess\u00e1rio. A solu\u00e7\u00e3o B consiste na aplica\u00e7\u00e3o de uma rede de cabos HEA250x250-8mm galvanizada com liga de Zn95%-Al5% (NP EN 10223-3) classe A (EN 10244-2) e marcado CE de acordo com ETA -16\/0164, complementada com uma malha de Dupla Tor\u00e7\u00e3o 5×7-15 (arame de 2,0mm) galvanizada Galmac 4R (Zn90%-Al10% Classe A) e refor\u00e7ada com uma malha de pregagens \u00d825mm 2Hx2V e cabos verticais, horizontais \u00d816mm e \u00d818mm galvanizados com liga de Zn95%-Al5% classe A (ISO17746). Concretamente instalaram-se: 541 m2 rede de cabos HEA 250X250-8mm, malha DuplaTor\u00e7\u00e3o 5×7 – 15 refor\u00e7ada com malha de pregagens \u00d8 25mm e cabos de \u00d816mm e \u00d818mm. <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>","protected":false},"excerpt":{"rendered":"

O Relat\u00f3rio contemplava duas solu\u00e7\u00f5es possiveis a Solu\u00e7\u00e3o A execu\u00e7\u00e3o de um revestimento em bet\u00e3o armado, com capacidade de suportar a massa do<\/p>\n","protected":false},"featured_media":7765,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-9661","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":null,"applications":null,"solutions":null,"sectors":null},"yoast_head":"\nER338, KM 031+970 - Maccaferri Portugal<\/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:\/\/maccaferri-stage.softecspa.it\/pt\/success-stories\/er338-km-031970\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ER338, KM 031+970\" \/>\n<meta property=\"og:description\" content=\"O Relat\u00f3rio contemplava duas solu\u00e7\u00f5es possiveis a Solu\u00e7\u00e3o A execu\u00e7\u00e3o de um revestimento em bet\u00e3o armado, com capacidade de suportar a massa do\" \/>\n<meta property=\"og:url\" content=\"https:\/\/maccaferri-stage.softecspa.it\/pt\/success-stories\/er338-km-031970\/\" \/>\n<meta property=\"og:site_name\" content=\"Maccaferri Portugal\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-13T13:59:35+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/maccaferri-stage.softecspa.it\/pt\/success-stories\/er338-km-031970\/\",\"url\":\"https:\/\/maccaferri-stage.softecspa.it\/pt\/success-stories\/er338-km-031970\/\",\"name\":\"ER338, KM 031+970 - 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