土体边坡振动台模型试验的相似律研究

The similitude rule in shaking table model test of soil slope

在相似第三定理的基础上,采用相似转换的方法,完成了土体边坡振动台模型试验中模型边坡和原型边坡中相似关系设计,推导过程中假设土体的抗剪强度遵循莫尔—库仑定理,考虑地震过程中土体的实际性能,选用等价非线性粘—弹性模型作为土体动力计算模型,对所得相似律进行归一简化,最终得到了符合实际又较简洁的边坡振动台模型试验相似律。

On the basis of the third theorem of similarity theorem, adopting the method of similarity transformation, the design of similarity rule of prototype slope and model slope in shaking table model test of soil slope is completed. The shear strength of the soil is assumed to obey the Mohr- Coulomb theory during the derivation. The equivalent nonlinear visco-elastic model is adopted to be the soil dynamic computing model, consider-ing the actual performance of the soil when earthquake happen. With the simplified of the resulting similarity rule, the similarity rule of the slope shaking table model test is realistic.