{"id":24184,"date":"2023-05-31T10:18:26","date_gmt":"2023-05-31T08:18:26","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/ligne-935-000-miramas-a-estaque-ligne-de-la-cote-bleue\/"},"modified":"2024-01-26T12:05:45","modified_gmt":"2024-01-26T11:05:45","slug":"ligne-935-000-miramas-a-estaque-ligne-de-la-cote-bleue","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/ligne-935-000-miramas-a-estaque-ligne-de-la-cote-bleue\/","title":{"rendered":"LIGNE 935 000 \u00a0MIRAMAS A ESTAQUE LIGNE DE LA C\u00d4TE BLEUE"},"content":{"rendered":"
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Probl\u00e8me<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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La ligne 935 000 de Miramas \u00e0 L’Estaque, dite ligne de la C\u00f4te bleue, s’inscrit dans un r\u00e9seau ferroviaire plus large reliant Miramas \u00e0 Marseille selon deux axes : \u00b7 La ligne 830 000 ligne historique reliant Paris \u00e0 Marseille via Lyon, de cat\u00e9gorie UIC 3 et 4 \u00b7 La ligne 935 000 reliant Miramas \u00e0 L’Estaque, puis l’Estaque \u00e0 Marseille via les voies maritimes La p\u00e9rennisation de la ligne \u00e9tait un enjeu de premier plan pour la m\u00e9tropole, car elle permet de d\u00e9sengorger les routes venant de Martigues jusqu’\u00e0 Marseille. Or cette ligne souffrait de ralentissements du fait d\u2019une d\u00e9gradation prononc\u00e9e de son infrastructure dont les causes sont li\u00e9es \u00e0 sa situation g\u00e9ographique et environnementale (air marin, pollution industrielle, \u00e9boulements\u2026). Les tranch\u00e9es rocheuses sont nombreuses et beaucoup \u00e9taient dans un \u00e9tat pr\u00e9occupant pouvant provoquer des \u00e9boulis sur la voie.<\/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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Les travaux de confortement rocheux concernaient la tranch\u00e9e et le versant rocheux entre les PK 867+265 au PK 867+522. NGE Fondation a fait appel \u00e0 Maccaferri pour \u00e9tudier et fournir les protections contre les \u00e9boulements, \u00e0 savoir : – des grillages double torsion pare-\u00e9boulis. – des filets anneaux MacRing. – des \u00e9crans pare-blocs RB100 UAF, RB 2000 et RB 3000. Les \u00e9crans pare-blocs ont \u00e9t\u00e9 test\u00e9s selon l\u2019agr\u00e9ment europ\u00e9en EAD340059-00-0106. Ecrans RB2000 et RB3000 : en d\u00e9veloppant ces \u00e9crans, un des objectifs \u00e9tait de faciliter et de r\u00e9duire le temps de mise en \u0153uvre pour les entreprises de pose, gr\u00e2ce aux avantages suivants : *ajout de marches sur les poteaux. *filet en ouverture en rideau qui arrive sur chantier d\u00e9j\u00e0 coupl\u00e9 au poteau. *syst\u00e8me d\u2019accrochage des haubans amonts au poteau qui permet une simple installation et d\u00e9sinstallation en cas d\u2019impact, afin de faciliter les op\u00e9rations d\u2019entretien. *Absence d\u2019ancrages en pied de poteau pour la RB 3000. Ecrans RB 100UAF : la structure interception est constitu\u00e9e d\u2019un grillage double torsion renforc\u00e9 par des c\u00e2bles en acier en continu. Sans hauban amont et aval, la barri\u00e8re RB 100 UAF a une emprise tr\u00e8s limit\u00e9e ce qui permet de l\u2019installer dans de nombreuses configurations et notamment en rehausse de merlon ou en t\u00eate de mur.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

Used Products<\/h2>
\"Ecrans<\/div>
Ecrans pare-blocs<\/h6>Les \u00e9crans pare-blocs Maccaferri (ou barri\u00e8res de r\u00e9tention) sont con\u00e7ues pour bloquer \/ intercepter les chutes de pierres et de blocs avant qu\u2019ils ne<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"Filets\"<\/div>
Filets<\/h6>Les filets HEA (High Energy Absorption) de Maccaferri sont les produits les plus rigides de notre gamme de syst\u00e8mes de grillages Mac.RO(TM), offrant u<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"Grillage<\/div>
Grillage pare-\u00e9boulis<\/h6>Le grillage Maccaferri DT est un composant essentiel de notre application MacRO d\u2019att\u00e9nuation des chutes de pierres et de protection contre les risque<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

Les travaux de confortement rocheux concernaient la tranch\u00e9e et le versant rocheux entre les PK 867+265 au PK 867+522. 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