岩土参数试验方法不确定性的概率评定方法

Probabilitic Approach to Analyse Uncertainty on Test Method for Geotechnical Parameter

岩土参数不同试验方法所得指标往往存在着显著差异性 ,岩土工程实践迫切需要对其进行概率评定 .以太原粉质粘土抗剪强度指标为例 ,通过大量的现场和室内试验对比 ,对评价岩土参数试验方法不确定性的途径进行了探讨 .结果表明 ,相关性分析法和随机因子分析法是两种有效的途径 ,它们使岩土参数与不同试验方法间在概率上达到统一 。

Since there is often a remarkable difference between geotechnical parameter indexes by different test methods,the probability estimation is urgently needed.By a number of comparising tests for geotechnical enginerring,the strength indexes for Taiyuan silty clay are studied to illustrate the way to deal with the uncertainty of indexes by way of test methods. The conclutions show that the methods of correlation analysis and random factor analysis which is more applicable are effective, by which the indexes between difference test methods are probabilisticly unified.