Research Article
Probabilistic Prediction of Maximum Tensile Loads in Soil Nails
Table 4
Comparisons of model accuracy in estimation of maximum nail loads among different models.
| Method | Model equation | Empirical term, | Empirical constants | | | M correlated to | a | b | c | d | e | | Input para. |
| The present study | | | −1.45 | 1.55 | — | — | — | 1.00 | 0.412 | No | None | Default FHWA simplified model | | (1) | 1.25 | 0.50 | 0.75 | 2.03 | −1.83 | 0.59 | 0.516 | Yes | , | (2) | (3) | Modified FHWA simplified model | | | 0.04 | −0.14 | 1.20 | — | — | 1.00 | 0.454 | No | None |
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Note: (1.5 m × 1.5 m = 2.25 m 2) is the typical tributary area; based on both data groups, i.e., data groups 1 and 2 ( ). |