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Tableau 2
Synthèse de quelques paramètres d’entrée caractéristiques des chantiers étudiés, et mesures de tassements associées.
Summary of some input parameters characteristic of the sites studied, and associated settlement measurements.
| Configuration | Paris T6-S1 | Paris T6-S3 | Paris T6-S6 | Paris L12-S1 | Lyon LB-S1 | Milan L5 | |
|---|---|---|---|---|---|---|---|
| Paramètres de pilotage tunnelier | Type | Pression terre | Pression terre | Pression terre | Pression terre | Pression boue | Pression terre |
| D (m) | 9,17 | 9,17 | 9,17 | 9,17 | 9,47 | 6,69 | |
| Pf (kPa) | 290 | 320 | 200 | 250 | 150–180 | 100–240 | |
| Pj (kPa) | u0clé (Pj*clé = 0) | 190 | 50–250 | u0clé (Pj*clé = 0) | 90 | 0 | |
| cmax (mm) | 25 | 25 | 25 | 25 | 35 | 10 | |
| Pb (kPa) | 270 | 320 | 280 | 180 | – | 100–240 | |
| Modèle géotechnique | H (m) | 23 | 20 | 18 | 18 | 16 | 15 |
| Nature | Sols grenus | Sols fins | Sols fins | Sols fins | Sols grenus | Sols grenus | |
| Mesures de tassements en surface | smax (mm) | 10,0 | 6,5 | 20,4 | 17,0 | 29,0 | 5–20 |
| iy / H | 0,40 | 0,42 | 0,28 | – | 0,41 | 0,35–0,40 | |
| VL | 0,35 % | 0,20 % | 0,39 % | – | 0,68 % | 0.3–0,8 % | |
| α0 | −0,6 | −0,6 | 0,0 | – | −1,1 | −0,8 | |
| ix / iy | 0,70 | 1,33 | 0,55 | – | 1,00 | 1,00–1,15 | |
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