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通过对饱和冻结粉土(兰州黄土)在不同温度(-10,-5和-2℃)、不同频率(0.1,1和5HZ)及不同动荷载下进行的大量振动试验表明,动弹模随冻土应变的增长而减小,随温度降低而增大,随频率增快而增大。最大应力对动弹模的影响可忽略。冻土的强度随温度降低而增大,频率对动强度的影响取决于冻土的固有频率。最小应力对强度影响可忽略。本文给出了动弹模及动强度随各种因素而变化的相关方程。
Through a large number of vibration tests conducted on saturated frozen silt (Lanzhou loess) at different temperatures (-10, -5, and -2°C), different frequencies (0.1, 1, and 5HZ) and different dynamic loads, the dynamic elasto-mold is frozen The increase of soil strain decreases, increases with decreasing temperature, and increases with increasing frequency. The effect of the maximum stress on the dynamic elastic model is negligible. The strength of frozen soil increases with decreasing temperature, and the effect of frequency on dynamic strength depends on the natural frequency of frozen soil. The effect of minimum stress on strength is negligible. In this paper, the dynamic equations and related equations of dynamic strength vary with various factors.