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Essai d’un porte-à-faux de pont sous charge concentrée


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posté par ghama

INTRODUCTION.......

L’INSTALLATION EXPERIMENTAL.............................7

2.1. DIMENSIONNEMENT DU MODELE....................7

2.2. SCHEMA D’ARMATURES ................................................................................14

2.3. EXECUTION DU MODELE..................................16

2.3.1. Ferraillage ............................................................16

2.3.2. Bétonnage ..................................................................20

2.4. DESCRIPTION DE L’INSTALLATION EXPERIMENTAL .........29

2.4.1. Mise en place ..........................................................

2.4.2. Installation des capteurs ..........................................................................32

3. RESULTATS.........................................39

3.1. CAPTEURS DE FORCE.............................................39

3.2. JAUGES OMEGA .................................................40

3.2.1. Bord supérieur ................................................40

3.2.2. Bord inférieur.........................45

3.3. CAPTEURS INDUCTIFS ..................................49

3.4. INCLINOMETRES..................................52

3.5. LEVEE DE FISSURES.........................................54

3.6. MODE DE RUPTURE.........................................57

3.7. ESSAI DES EPROUVETTES EN BETON ....................60

4. ANALYSE DES RESULTATS ...................63

4.1. ANALYSE ELASTIQUE LINEAIRE.........................................63

4.2. COMPORTEMENT A LA RUPTURE .....68

4.2.1. Mécanismes en flexion ...................................68

4.2.2. Poinçonnement...........................................75

5. ÉTUDE PARAMETRIQUE DANS LE DOMAINE ELASTIQUE ...............79

5.1. ANALYSE DIMENSIONNEL .........................................................79

5.2. RESULTATS NUMERIQUES .............81

6. CONCLUSION...................................87

7. BIBLIOGRAPHIE............................89

8. ANNEXES......................................91

8.1. ANALYSE NON LINEAIRE AVEC Z_SOIL

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