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SLOPE RELIABILITY. FINAL REPORT.
| 题名： | SLOPE RELIABILITY. FINAL REPORT. |
| 作者： | Thornton-SI |
| 关键词： | SLOPE-STABILITY; SAFETY-; RELIABILITY-ANALYSIS; PROBABILITY-; VARIABILITY-; SOIL-STRENGTH |
| 摘要： | Analysis methods for slope stability are routinely applied by geotechnical engineers. Slope designs, however, are usually based on a "safety factor" which does not account for soil variability (soil variability is due to actual inplace condition and not due to sampling procedures and/or testing methods). As a result, the true safety of a slope is unknown. A reliability approach, using probability calculations which account for the variability in soil strength, is superior to the factor of safety approach. The method is based on the point estimate method and allows engineers to calculate a probability of failure for the slope. Knowing the probability of failure improves engineering judgement by providing a rational basis for making a safe and economical slope design. Examples show how soil variability affects slope reliability and how the method is applied. The factor of safety is 1.30 in the first two examples. In the first example, the soil deposits are uniform and the probability of failure is acceptable; in the second example, the soils have more soil strength variation and the probability of failure is higher than recommended. |
| 总页数： | 1995/06/08. 9308-9411 pp52 (Figs., Tabs., Refs., 1 App.) |
| 报告类型： | 科技报告 |
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