Research Article
Assessment of Stiffness and Strength Parameters for the Soft Soil Model of Clays of Cameroon
Table 4
Optimized parameters of the Soft Soil model (soil samples 1–71) and statistical significance of these parameters.
| Soil samples | Parameters of the Soft Soil model | c (kPa) | φ (°) | Ψ (°) | M | | | | | (kPa) | |
| 1 | 52 | 20.5 | 0 | 1.21 | 0.650 | 0.15 | 0.0341 | 0.0036 | 52.538 | 9.36 | 2 | 57 | 18.7 | 0 | 1.11 | 0.679 | 0.15 | 0.0213 | 0.0032 | 44.576 | 6.67 | 3 | 18 | 24.3 | 0 | 1.37 | 0.588 | 0.15 | 0.0188 | 0.0024 | 72.289 | 7.98 | 4 | 22 | 21 | 0 | 1.24 | 0.642 | 0.15 | 0.0266 | 0.0026 | 86.282 | 10.10 | 5 | 61 | 18.6 | 0 | 1.12 | 0.681 | 0.15 | 0.0297 | 0.0036 | 102.334 | 8.18 | 6 | 5 | 30.1 | 0.1 | 1.63 | 0.498 | 0.15 | 0.0366 | 0.0042 | 113.029 | 8.65 | 7 | 14 | 24.8 | 0 | 1.40 | 0.581 | 0.15 | 0.0288 | 0.0029 | 105.618 | 9.81 | 8 | 39 | 27.5 | 0 | 1.50 | 0.538 | 0.15 | 0.0174 | 0.0026 | 82.939 | 6.67 | 9 | 159 | 9.9 | 0 | 0.76 | 0.828 | 0.15 | 0.0415 | 0.0029 | 103.682 | 14.40 | 10 | 55.3 | 28.8 | 0 | 1.58 | 0.518 | 0.15 | 0.0691 | 0.0068 | 22.839 | 10.09 | 11 | 23.1 | 35.1 | 5.1 | 1.89 | 0.425 | 0.15 | 0.0551 | 0.0043 | 28.782 | 12.68 | 12 | 2.2 | 41.9 | 11.9 | 2.18 | 0.332 | 0.15 | 0.0362 | 0.0081 | 13.763 | 4.50 | 13 | 0.7 | 40.1 | 10.1 | 2.09 | 0.356 | 0.15 | 0.0346 | 0.0069 | 20.640 | 5.00 | 14 | 54 | 26.9 | 0 | 1.49 | 0.548 | 0.15 | 0.0667 | 0.0075 | 29.901 | 8.93 | 15 | 39.2 | 28.8 | 0 | 1.59 | 0.518 | 0.15 | 0.0676 | 0.0054 | 42.747 | 12.48 | 16 | 32.6 | 34.5 | 4.5 | 1.84 | 0.434 | 0.15 | 0.0546 | 0.0065 | 46.478 | 8.43 | 17 | 18.3 | 39 | 9 | 2.09 | 0.371 | 0.15 | 0.0645 | 0.0029 | 36.835 | 22.11 | 18 | 97 | 21.3 | 0 | 1.15 | 0.637 | 0.15 | 0.0157 | 0.0047 | 77.850 | 3.31 | 19 | 39 | 23 | 0 | 1.33 | 0.609 | 0.15 | 0.0551 | 0.0042 | 106.972 | 13.01 | 20 | 55 | 26.1 | 0 | 1.41 | 0.560 | 0.15 | 0.0136 | 0.0027 | 76.828 | 5.00 | 21 | 49 | 25.5 | 0 | 1.46 | 0.569 | 0.15 | 0.0184 | 0.0005 | 43.808 | 34.50 | 22 | 63 | 20.6 | 0 | 1.10 | 0.648 | 0.15 | 0.0145 | 0.0050 | 78.738 | 2.92 | 23 | 62 | 23.3 | 0 | 1.27 | 0.604 | 0.15 | 0.0195 | 0.0047 | 19.551 | 4.11 | 24 | 39 | 28.5 | 0 | 1.49 | 0.523 | 0.15 | 0.0201 | 0.0052 | 27.054 | 3.87 | 25 | 31 | 26.6 | 0 | 1.26 | 0.552 | 0.15 | 0.0152 | 0.0073 | 57.216 | 2.07 | 26 | 77 | 23.7 | 0 | 1.26 | 0.598 | 0.15 | 0.0254 | 0.0073 | 39.195 | 3.50 | 27 | 18 | 27.2 | 0 | 1.53 | 0.543 | 0.15 | 0.0572 | 0.0028 | 26.766 | 20.57 | 28 | 13.3 | 33.3 | 3.3 | 1.81 | 0.451 | 0.15 | 0.0700 | 0.0028 | 49.040 | 24.86 | 29 | 74 | 30.4 | 0.4 | 1.68 | 0.494 | 0.15 | 0.0495 | 0.0015 | 51.939 | 32.58 | 30 | 17 | 50.1 | 20.1 | 2.67 | 0.233 | 0.15 | 0.0323 | 0.0019 | 36.155 | 17.25 | 31 | 14 | 38 | 8 | 2.04 | 0.384 | 0.15 | 0.0638 | 0.0023 | 5.949 | 27.36 | 32 | 65 | 38.2 | 8.2 | 2.05 | 0.382 | 0.15 | 0.0440 | 0.0020 | 51.982 | 22.02 | 33 | 50 | 39 | 9 | 2.08 | 0.371 | 0.15 | 0.0444 | 0.0029 | 62.706 | 15.38 | 34 | 9.7 | 39.7 | 9.7 | 2.12 | 0.361 | 0.15 | 0.0849 | 0.0051 | 36.613 | 16.78 | 35 | 40 | 43.2 | 13.2 | 2.30 | 0.315 | 0.15 | 0.0736 | 0.0036 | 6.497 | 20.43 | 36 | 26 | 27.2 | 0 | 1.52 | 0.543 | 0.15 | 0.0587 | 0.0040 | 55.688 | 14.68 | 37 | 64 | 26.9 | 0 | 1.51 | 0.548 | 0.15 | 0.0698 | 0.0040 | 72.308 | 17.46 | 38 | 74 | 26.5 | 0 | 1.46 | 0.554 | 0.15 | 0.0265 | 0.0036 | 82.724 | 7.29 | 39 | 104 | 23.5 | 0 | 1.35 | 0.601 | 0.15 | 0.0448 | 0.0043 | 110.998 | 10.29 | 40 | 66 | 29.5 | 0 | 1.57 | 0.508 | 0.15 | 0.0222 | 0.0042 | 47.036 | 5.29 | 41 | 11.1 | 37.1 | 7.1 | 1.98 | 0.397 | 0.15 | 0.0457 | 0.0041 | 23.349 | 11.24 | 42 | 40.1 | 33.1 | 3.1 | 1.77 | 0.454 | 0.15 | 0.0271 | 0.0034 | 53.027 | 8.05 | 43 | 48.8 | 21.6 | 0 | 1.27 | 0.632 | 0.15 | 0.0368 | 0.0026 | 67.475 | 14.39 | 44 | 42.1 | 35.1 | 5.1 | 1.89 | 0.425 | 0.15 | 0.0489 | 0.0038 | 61.393 | 12.93 | 45 | 25 | 26.6 | 0 | 1.51 | 0.552 | 0.15 | 0.0638 | 0.0027 | 41.373 | 23.64 | 46 | 13.6 | 32.3 | 2.3 | 1.76 | 0.466 | 0.15 | 0.0482 | 0.0032 | 51.191 | 14.86 | 47 | 3.3 | 31.9 | 1.9 | 1.74 | 0.472 | 0.15 | 0.0412 | 0.0027 | 49.404 | 15.00 | 48 | 8.2 | 29.8 | 0 | 1.58 | 0.503 | 0.15 | 0.0524 | 0.0103 | 77.563 | 5.09 | 49 | 88 | 36.3 | 6.3 | 1.96 | 0.408 | 0.15 | 0.0767 | 0.0036 | 77.180 | 21.59 | 50 | 24 | 44.3 | 14.3 | 2.35 | 0.302 | 0.15 | 0.0368 | 0.0033 | 72.069 | 11.11 | 51 | 16 | 33.3 | 3.3 | 1.80 | 0.451 | 0.15 | 0.0818 | 0.0059 | 81.170 | 13.80 | 52 | 16 | 29.5 | 0 | 1.63 | 0.508 | 0.15 | 0.0600 | 0.0041 | 16.165 | 14.59 | 53 | 14.2 | 34.7 | 4.7 | 1.88 | 0.431 | 0.15 | 0.0760 | 0.0042 | 22.302 | 17.96 | 54 | 25.1 | 31 | 1 | 1.69 | 0.485 | 0.15 | 0.0381 | 0.0029 | 55.847 | 13.01 | 55 | 29.6 | 36.5 | 6.5 | 1.95 | 0.405 | 0.15 | 0.0344 | 0.0028 | 43.545 | 12.11 | 56 | 0.7 | 49.9 | 19.9 | 2.66 | 0.235 | 0.15 | 0.0524 | 0.0036 | 22.404 | 14.48 | 57 | 57 | 23.8 | 0 | 1.35 | 0.596 | 0.15 | 0.0528 | 0.0056 | 34.097 | 9.41 | 58 | 8.4 | 45 | 15 | 2.37 | 0.293 | 0.15 | 0.0361 | 0.0057 | 50.549 | 6.29 | 59 | 2.6 | 21.94 | 0 | 1.30 | 0.626 | 0.15 | 0.0425 | 0.0021 | 103.350 | 19.88 | 60 | 8.1 | 16.97 | 0 | 1.09 | 0.708 | 0.15 | 0.0762 | 0.0026 | 89.443 | 29.00 | 61 | 25.2 | 19.31 | 0 | 1.19 | 0.669 | 0.15 | 0.0543 | 0.0026 | 57.159 | 20.90 | 62 | 38.4 | 34 | 4 | 1.82 | 0.441 | 0.15 | 0.0973 | 0.0097 | 69.936 | 10.07 | 63 | 24.4 | 28 | 0 | 1.52 | 0.531 | 0.15 | 0.0732 | 0.0114 | 84.685 | 6.43 | 64 | 27.3 | 31 | 1 | 1.66 | 0.485 | 0.15 | 0.0650 | 0.0093 | 48.168 | 7.00 | 65 | 21 | 36 | 6 | 1.91 | 0.412 | 0.15 | 0.0560 | 0.0075 | 30.572 | 7.50 | 66 | 56.5 | 31 | 1 | 1.67 | 0.485 | 0.15 | 0.0426 | 0.0055 | 40.089 | 7.69 | 67 | 18.6 | 34 | 4 | 1.81 | 0.441 | 0.15 | 0.0772 | 0.0099 | 60.382 | 7.78 | 68 | 35.2 | 31 | 1 | 1.67 | 0.485 | 0.15 | 0.0755 | 0.0094 | 46.077 | 8.04 | 69 | 33.9 | 29 | 0 | 1.60 | 0.515 | 0.15 | 0.0723 | 0.0053 | 23.557 | 13.53 | 70 | 28.1 | 26 | 0 | 1.46 | 0.562 | 0.15 | 0.0835 | 0.0063 | 12.514 | 13.17 | 71 | 18.9 | 31 | 1 | 1.66 | 0.485 | 0.15 | 0.0508 | 0.0073 | 50.181 | 6.94 | Average value | 36.74 | 30.18 | 3.11 | 1.65 | 0.50 | 0.15 | 0.0481 | 0.0046 | 54.16 | 12.51 | Variance of soils samples | 794.95 | 60.02 | 24.09 | 0.14 | 0.01 | 0.00 | 0.0004 | 0.0000 | 740.32 | 51.24 | Standard deviation | 28.19 | 7.75 | 4.91 | 0.38 | 0.11 | 0.00 | 0.0208 | 0.0023 | 27.21 | 7.16 | Confidence interval range | 8.55 | 22.43 | −1.79 | 1.27 | 0.39 | 0.15 | 0.0273 | 0.0023 | 26.95 | 5.35 | | 64.94 | 37.93 | 8.02 | 2.02 | 0.62 | 0.15 | 0.0690 | 0.0069 | 81.37 | 19.67 | Maximum value | 159.00 | 50.10 | 20.10 | 2.67 | 0.83 | 0.15 | 0.0973 | 0.0114 | 113.03 | 34.50 | Minimum value | 0.70 | 9.90 | 0.00 | 0.76 | 0.23 | 0.15 | 0.0136 | 0.0005 | 5.95 | 2.07 | Median value | 29.60 | 29.50 | 0.00 | 1.60 | 0.51 | 0.15 | 0.0482 | 0.0040 | 50.55 | 11.11 |
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