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桩基、边坡工程中C、φ值的正确选取是最为重要的。实验室中模拟,一则要考虑应力状态的相似,二则要使方法经济实用。平衡剪法即应此而生。此方法已应用于实践中,且取得了很好的经济效益。长期(494天)的单剪蠕变实验表明,固结压力对变形破坏有着决定性的影响。因此,进行数据整理时应考虑到固结压力的作用。同时,蠕变实验中存在着一个时间尺度效应。实验是在自行设计的应变式单剪仪上进行的。文章最后还进行了实验结果的对比分析。
The correct selection of C and φ values in pile foundation and slope engineering is the most important. Simulation in the laboratory, one should consider the similarity of the stress state, and the other should make the method economical and practical. Balanced shear is born. This method has been applied in practice and has achieved very good economic benefits. Long-term (494 days) single shear creep experiments show that the consolidation pressure has a decisive influence on deformation failure. Therefore, the effect of consolidation pressure should be taken into account when performing data consolidation. At the same time, there is a time-scale effect in creep experiments. The experiment was conducted on a self-designed strain single shear. Finally, the article also conducted a comparative analysis of the experimental results.