中文摘要：

依据度分析的思想,基于考虑岩体材料尺度节理裂隙特性的各向异性强度模型,建立了岩体地下结构尺度的等效分析模型,分析了施工过程中节理裂隙岩体的应力释放特征对地下结构的影响。对比分析各向异性本构模型和摩尔库伦本构模型的结果表明,采用考虑节理裂隙分布特性的各向异性等效多尺度分析模型能较好的反映节理特征,准确地反映岩体在地下结构施工过程中的塑性应变主要发生在节理面方向的现象。同时,各向异性本构模型可以较好的改善网格的特性,提高计算的效率和收敛性,为复杂地质条件下的地下结构的模拟奠定基础。

英文摘要：

Based on the thought of multiscale analysis and the anisotropic strength model of rock characters,the equivalent analysis model for the underground rock structure scale is set up,and the effects of the geostress releasing characters of jointed rock on the underground structure in construction are analyzed at the same time.Compared with Mohr-Coulomb constitution model,it is shown that using the equivalent multiscale analysis model could better reflect the joint characters and the phenomenon that the plastic strain of rock would always appear along the joint surface.Simultaneously,using the anisotropic constitution model could obviously improve the grid quality,as well as the calculation effectiveness and convergency,which could lay a foundation for the simulation of the undergrould structure under complex geologic conditions.