双向正交节理岩体的一个复合蠕变模型

Composite creep model for rock with bilateral orthogonal joint

将受一组正交节理切割的岩体结构视为广义宏观复合材料，用“代表元”的方法．建立了复合蠕变本构方程，这对于工程计算和评估岩体结构的力学特性，不仅具有一定的理论意义，而且具有一定的实用价值。所得结果，也适用于那些组构形式相同的复合材料．

The rock structure cut by a set of orthogonal joints would be considered as a general macro-composite material, a constitutive equation of composite creep is established by employing 'the representative element'. It is not only significant theoretically,but also valuable practically for engineering computation and evaluation of mechanics characters in rock structures. The obtained results are also suitable for those composite materials which have the same composing form as rock structure with orthogonal joints.