冻土抗剪强度特性及试验研究

通过研制冻土变角剪切试验仪来测定冻土抗剪强度指标,即冻土内摩擦角和粘聚力;冻土变角剪切试验仪由WDT-100冻土试验机和变角试验装置两部分组成.试验加载和数据由计算机自动控制和采集,试验系统精度高、结果可靠.每组试样按照四种固定剪切面进行剪切试验;通过大量的试验结果表明冻土抗剪强度可用摩尔-库仑强度理论来描述,变角剪切试验仪是测定冻土抗剪强度行之有效的方法之一.

Frozen soil ant-shear strength characterand testing study

Byresearching and manufacturing the different angle shearing testing apparatus, the measurement of frozen soil ant-shear strength indexes, i.e. its friction angle and cohesion, has been achieved. The different angle shearing testing apparatus are made up of a WDT-100 frozen soil experiment machine and the different angle shearing experiment equipment. Loading and data are controlled and collected automatically by a computer. The experiment system accuracy is high and experiment results are dependable. A lot of experimentations have been made and the results show that frozen soil anti-shear strength can be described by Mohr-Coulomb strength theories, and the different angle shearing testing instrument is the efficient of methods to test frozen soil ant-shear strength.