三种冻土长期强度预报方程的适用性研究

为研究不同冻土长期强度预报方程针对不同土性的适用性，以饱和冻结砂土、粉土、黏土为研究对象，采用球形模板压入仪对其长期强度进行测试，选用常用的3种冻土长期强度预报方程对3种土的长期强度进行预报.通过对比试验实测值和预测值，研究3种长期强度预报方程在不同土性中的适用性.结果表明：维亚洛夫长期强度预报方程可以较为准确地预测粉土、黏土的长期强度值；对于砂土，3种长期强度预报方程预测值都有一定的偏差，建议取3种预报方程的加权平均值作为其预测值.
In order to study the applicability of different long-term strength prediction equations for different soils， the long-term strength of saturated frozen sandy soil， silt and clay were tested using a spherical template indenter. At the same time， the long-term strength prediction equations of three kinds of soils were used to predict their long-term strength. The applicability of the three long-term strength prediction equations for different soils was studied by comparing the measured values with the predicted values. The long-term strength prediction equation of Vyalov can accurately predict the long-term strength of silt and clay. For the sand， the prediction values of the three long-term strength prediction equations have some deviation， which recommends that the weighted average of the three predictive equations can be taken as the predictions.