陈鑫1,2,张泽1?覮,马巍1,李东庆1,杜微3,姚晓亮1.三种冻土长期强度预报方程的适用性研究[J].湖南大学学报:自然科学版,2018,45(11):133~139
三种冻土长期强度预报方程的适用性研究
Study on Applicability of Long-term Strength Prediction Equations for Three Frozen Soils
  
DOI:
中文关键词:  冻土  长期强度  强度预报方程  球形模板压入仪  适用性
英文关键词:frozen soil  long-term strength  strength prediction equation  spherical template indenter  applicability
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作者单位
陈鑫1,2,张泽1?覮,马巍1,李东庆1,杜微3,姚晓亮1 (1.中国科学院西北生态环境资源研究院 冻土工程国家重点实验室甘肃 兰州 730000 2.中国科学院大学北京 1000493.兰州大学 土木工程与力学学院甘肃 兰州 730000) 
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中文摘要:
      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.
英文摘要:
      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.
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