{"id":12350,"date":"2020-07-30T10:31:44","date_gmt":"2020-07-30T08:31:44","guid":{"rendered":"http:\/\/navier-lab.fr\/?page_id=12350"},"modified":"2020-07-30T10:31:44","modified_gmt":"2020-07-30T08:31:44","slug":"modelisation-des-comportements-differes-sur-le-tres-long-terme","status":"publish","type":"page","link":"https:\/\/navier-lab.fr\/en\/research\/multi-echelle\/comportements-differes-des-materiaux-du-genie-civil\/modelisation-des-comportements-differes-sur-le-tres-long-terme\/","title":{"rendered":"Mod\u00e9lisation des comportements diff\u00e9r\u00e9s sur le tr\u00e8s long terme"},"content":{"rendered":"<p><section class=\"kc-elm kc-css-735050 kc_row\"><div class=\"kc-row-container  kc-container\"><div class=\"kc-wrap-columns\"><div class=\"kc-elm kc-css-126469 kc_col-sm-12 kc_column kc_col-sm-12\"><div class=\"kc-col-container\"><div class=\"kc-elm kc-css-370406 kc_text_block\"><\/p>\n<p>Certaines infrastructures sont vieillissantes. Typiquement, dans un avenir tr\u00e8s proche, plusieurs centrales nucl\u00e9aires fran\u00e7aises vont atteindre la dur\u00e9e de vie pour laquelle elles ont \u00e9t\u00e9 initialement con\u00e7ues (40 ans). Pour pouvoir \u00e9tendre leur dur\u00e9e d\u2019exploitation, la s\u00e9curit\u00e9 des installations doit \u00eatre garantie. L\u2019enceinte de confinement ext\u00e9rieure de certaines de ces centrales est en b\u00e9ton pr\u00e9contraint biaxialement. Cette pr\u00e9contrainte diminue au cours du temps \u00e0 cause du fluage du b\u00e9ton. Une pr\u00e9diction pr\u00e9cise de comment la pr\u00e9contrainte va \u00e9voluer au cours des prochaines d\u00e9cennies n\u00e9cessite donc une bonne mod\u00e9lisation des propri\u00e9t\u00e9s de fluage du b\u00e9ton sur le tr\u00e8s long terme. Le Laboratoire Navier travaille sur cette mod\u00e9lisation, notamment par une approche micro-porom\u00e9canique.<\/p>\n<p>\n<\/div><\/div><\/div><\/div><\/div><\/section><section class=\"kc-elm kc-css-355020 kc_row\"><div class=\"kc-row-container  kc-container\"><div class=\"kc-wrap-columns\"><div class=\"kc-elm kc-css-26035 kc_col-sm-12 kc_column kc_col-sm-12\"><div class=\"kc-col-container\"><div class=\"kc-elm kc-css-896502 kc_shortcode kc_single_image\">\n\n        <a rel=\"prettyPhoto\" class=\"kc-pretty-photo\" href=\"https:\/\/navier-lab.fr\/wp-content\/uploads\/2020\/07\/figure-mod\u00e9lisation-comportements-diff\u00e9r\u00e9s-tr\u00e8s-long-terme.jpg\" title=\"\" target=\"\">\n        <img decoding=\"async\" src=\"https:\/\/navier-lab.fr\/wp-content\/uploads\/2020\/07\/figure-mod\u00e9lisation-comportements-diff\u00e9r\u00e9s-tr\u00e8s-long-terme.jpg\" class=\"\" alt=\"\" \/>    <\/a>\n    <\/div>\n<\/div><\/div><\/div><\/div><\/section><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":12346,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-12350","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/comments?post=12350"}],"version-history":[{"count":1,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12350\/revisions"}],"predecessor-version":[{"id":12351,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12350\/revisions\/12351"}],"up":[{"embeddable":true,"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/pages\/12346"}],"wp:attachment":[{"href":"https:\/\/navier-lab.fr\/en\/wp-json\/wp\/v2\/media?parent=12350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}