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砂土的强度值具有很大的不确定性,确定其概率分布规律对于施工设计选取安全值和土的本构模型研究都有着重要意义。通过对不同颗粒级配的土进行的单轴压缩试验得到大量实测强度值,统计其测得的强度值并对其进行分析,得出了粗颗粒含量较低的土的强度分布规律比符合为布尔分布,而粗颗粒含量较高的土则比较符合正态分布的结论。由其分布规律,解决了根据工程结构不同的重要性以及不同的经济性选取不同的强度值的问题。
The strength value of sand has great uncertainty. Determining the law of its probability distribution is of great significance to the selection of safety value and constitutive model of soil for construction design. Through the uniaxial compression tests on different graded soil, a large number of measured strength values are obtained, and the measured intensity values are calculated and analyzed. The results show that the strength distribution law of the soil with lower coarse particle content is higher than that Boolean distribution, while coarse soil with higher content of soil is more in line with the normal distribution of conclusions. By its distribution law, it solves the problem of choosing different intensity values according to different importance of engineering structure and different economy.