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MANANARA NORD Section Antanambe – Mananara Nord (Du PK 242+270 Au PK 283+700)

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MANANARA NORD Section Antanambe – Mananara Nord (Du PK 242+270 Au PK 283+700) UNIVERSITE D’ANTANANARIVO ECOLE SUPERIEURE POLYTECHNIQUE DEPARTEMENT BATIMENT ET TRAVAUX PUBLICS Mémoire de fin d’études en vue de l’obtention du diplôme d’Ingénieur en Bâtiment et Travaux Publics ETUDE D’AMENAGEMENT DE LA ROUTE NATIONALE SECONDAIRE N°05 ENTRE SOANIERANA IVONGO ET MANANARA NORD Section Antanambe – Mananara Nord (Du PK 242+270 au PK 283+700) Présenté par : RAFANOMIAZANTSOA Passe Jean Encadré par : Monsieur RABENATOANDRO Martin Date de soutenance : 20 Janvier 2014 Promotion 2012 UNIVERSITE D’ANTANANARIVO ECOLE SUPERIEURE POLYTECHNIQUE DEPARTEMENT BATIMENT ET TRAVAUX PUBLICS Mémoire de fin d’études en vue de l’obtention du diplôme d’Ingénieur en Bâtiment et Travaux Publics ETUDE D’AMENAGEMENT DE LA ROUTE NATIONALE SECONDAIRE N°05 ENTRE SOANIERANA IVONGO ET MANANARA NORD Section Antanambe – Mananara Nord (Du PK 242+270 au PK 283+700) Présenté par : RAFANOMIAZANTSOA Passe Jean Président du jury : Monsieur RAHELISON Landy Harivony Rapporteur : Monsieur RABENATOANDRO Martin Examinateurs : Madame RAJAONARY Veroniaina Monsieur RANDRIANTSIMBAZAFY Andrianirina Monsieur RAJOELINANTENAINA Solofo Promotion 2012 Mémoire de fin d’études REMERCIEMENTS En premier lieu, nous tenons à remercier DIEU tout puissant pour son grand amour et sa bonne volonté de nous avoir donné santé, force et courage durant nos cinq années d’études ainsi que pendant l’élaboration de ce mémoire de fin d’études. Ensuite, nous exprimons nos vifs et sincères remerciements ainsi que notre profonde reconnaissance à: Monsieur ANDRIANARY Philippe Antoine, Directeur de L’Ecole Supérieure Polytechnique d’Antananarivo qui nous a consenti d’effectuer nos études pendant 5 ans dans cette école ; Monsieur RAHELISON Landy Harivony, Maître de conférences, Chef de département Bâtiment et Travaux Publics, qui n’a cessé de perfectionner notre formation et fait l’honneur de présider le Jury de cette soutenance ; Monsieur RABENATOANDRO Martin, Maître de Conférences, pour ses précieux conseils et qui nous a bien encadré pendant la réalisation de ce mémoire ; Monsieur RABE Anthony, Ingénieur des Travaux Publics, Chef de projet de l’ARM qui nous a fait l’honneur de bien vouloir nous accorder ce sujet de mémoire ; Tous les membres du Jury qui, malgré leurs occupations respectives, ont pris la peine d’examiner et d’évaluer ce mémoire ; Tous les enseignants et les personnels de l’Ecole Supérieure Polytechnique d’Antananarivo pour leur contribution respective à la formation d’Ingénieur. Et finalement, nous tenons à remercier spécialement : Nos parents, nos frères et sœurs pour leur amour, leurs soutiens moral et financier ; Toutes nos grandes familles, tous nos amis et collègues ; A tous ceux qui, de près ou de loin, ont œuvré pour la réalisation de ce travail. RAFANOMIAZANTSOA Passe Jean i Mémoire de fin d’études SOMMAIRE REMERCIEMENTS SOMMAIRE ABREVIATIONS ET SYMBOLES LISTE DES TABLEAUX LISTE DES FIGURES INTRODUCTION GENERALE PREMIERE PARTIE : ENVIRONNEMENTS SOCIO-ECONOMIQUES DU PROJET Chapitre I : GENERALITES SUR LE PROJET Chapitre II : LIMITATION DE L’ETUDE Chapitre III : MONOGRAPHIE DE LA ZONE D’INFLUENCE DUXIEME PARTIE : ETUDES TECHNIQUES Chapitre I : RECONNAISSANCE DE L’ITINERAIRE Chapitre II : PRINCIPES DE CONCEPTION ET TECHNIQUES D’AMENAGEMENT Chapitre III : DIMENSIONNEMENT DE LA CHAUSSEE TROISIEME PARTIE : ETUDES FINANCIERES ET ETUDES DES IMPACTS ENVIRONNEMENTAUX Chapitre I: ESTIMATION DU COUT DU PROJET Chapitre II : ETUDE DE RENTABILITE Chapitre III : IMPACTS ENVIRONNEMENTAUX CONCLUSION GENERALE BIBLIOGRAPHIES ANNEXES TABLE DES MATIERES RAFANOMIAZANTSOA Passe Jean ii Mémoire de fin d’études LISTE DES TABLEAUX Tableau 1: Les Districts de la région Analanjirofo .................................................................... 7 Tableau 2 : Effectif de la population d’Analanjirofo ................................................................. 9 Tableau 3 : Situation de la migration temporaire ..................................................................... 10 Tableau 4 : Situation de la migration définitive ....................................................................... 10 Tableau 5: Caractéristique du service de la santé publique ...................................................... 11 Tableau 6: Médecine traditionnelle ......................................................................................... 12 Tableau 7 : Tableau récapitulatif du nombre des temples et églises ......................................... 13 Tableau 8: Répartition des surfaces cultivées par type de spéculation en Ha ........................... 14 Tableau 9: Production rizicole d’Analanjirofo année 2009 ...................................................... 15 Tableau 10: Autre culture vivrière .......................................................................................... 15 Tableau 11 : Production de légume de l’année 2008-2009 ...................................................... 15 Tableau 12 : Production culture de rente campagne 2008-2009 ............................................... 16 Tableau 13 : Récapitulatif des caractéristiques de chaque section ............................................ 25 Tableau 14 : Classification des essais ..................................................................................... 28 Tableau 15 : Résultats des essais géotechniques sur la plate-forme ......................................... 29 Tableau 16: Tronçons homogènes ........................................................................................... 30 Tableau 17 : Catégorie de la route........................................................................................... 39 Tableau 18 : Caractéristiques géométriques (minimales) ......................................................... 42 Tableau 19 : TMJA du poste 1 Antsikafoka ............................................................................ 45 Tableau 20 : TMJA du poste 2 Andraokaroka ......................................................................... 45 Tableau 21 : TMJA de base à l’année 2011 ............................................................................. 46 Tableau 22 : Projection du trafic normal ................................................................................. 48 Tableau 23 : Trafic induit projeté ............................................................................................ 48 Tableau 24 : Données relatives aux bornages .......................................................................... 48 Tableau 25 : Trafic détourné ................................................................................................... 49 Tableau 26 : Trafic total à l’année de mise service .................................................................. 49 Tableau 27: Fuseau de spécification de GCNT 0/60 ................................................................ 53 Tableau 28: Fuseau de spécification de GCNT 0/31.5 ............................................................. 53 Tableau 29 : Caractéristiques des granulats la couche de roulement ........................................ 54 Tableau 30: Caractéristiques et utilisation des gisements meubles........................................... 55 Tableau 31 : Caractéristiques géotechniques et utilisations des carrières ................................. 57 Tableau 32 : valeur du coefficient β ........................................................................................ 59 Tableau 33 : valeur du coefficient α ........................................................................................ 60 Tableau 34 : Epaisseur équivalente de la chaussée .................................................................. 61 Tableau 35 : Epaisseurs minimales retenues ........................................................................... 62 Tableau 36 : Epaisseur réelle de chaque couche ...................................................................... 63 Tableau 37: Valeur de contrainte radiale admissible ............................................................... 66 Tableau 38: Vérification des contraintes ................................................................................. 66 Tableau 39 : Valeur du risque de calcul .................................................................................. 68 Tableau 40 : Poids lourds à l’année de mise en service ........................................................... 68 Tableau 41: Classe du trafic .................................................................................................... 68 Tableau 42 : Valeur du coefficient CAM ................................................................................ 69 RAFANOMIAZANTSOA Passe Jean iii Mémoire de fin d’études Tableau 43: Paramètres climatiques ........................................................................................ 71 Tableau 44: Classe de portance à long terme de la plate-forme ............................................... 71 Tableau 45 : Classe de portance pour chaque section homogène ............................................. 72 Tableau 46: Caractéristiques mécaniques de BB ..................................................................... 73 Tableau 47 : Spécifications de GCNT (GNT A de type 1) ....................................................... 74 Tableau 48 : Spécifications des MS (GNT A de type 3) .......................................................... 75 Tableau 49: Epaisseur minimale de la couche de base ............................................................. 75 Tableau 50 :
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