摘要
本文用动力有限单元法对两组共8种不同裂缝情况的柱状岩石结构进行了动力分析,研究了裂缝对结构动力性能的影响,确定了有缝岩石材料的有效动弹性模量的估算方法。研究指出,可以用无缝的正交各向异性体来估算有缝的简单结构的动力响应。最后还用模型试验研究了裂缝对阻尼的影响并验证了上述的结论。
The dynamic analyses of two groups of column rock structure including eight cases of joints are carried out by finite element method. The effects of joints on the dynamic elastic modulus of the material and on the natural dynamic behavior of the column structure are obtained. The results show that the dynamic response for a simple structure with joints can be estimated using a dynamic analysis of the structure without joint which has orthogonal anisotropic property. This conclusion is demonstrated by the results of the dynamic model test for a plane slice of a hill with joints.
出处
《水利学报》
EI
1985年第2期22-29,共8页
Journal of Hydraulic Engineering
