综述岩石中间主应力效应试验和强度理论的研究进展，总结了岩石中间主应力效应的基本规律和现有岩石强度理论的特点与不足，最后介绍了统一强度理论及其对岩石真三轴试验的预测与在岩土工程中的应用。研究结果表明：中间主应力效应及其区间性是岩石强度的重要特性，且已是目前岩石强度准则建立所必须考虑的基本问题之一；应用统一强度理论并考虑更多复杂因素的综合影响，可得到更符合实际情况的较理想解答。%Authors firstly summarized the advances in rock of the intermediate principal stress effect test and strength theory,then found out some basic laws of the intermediate principal stress effect for rock,and characteristics and shortcomings of the existing rock strength theories. Finally,authors introduced the unified strength theory,and its prediction for rock true triaxial tests and applications in geotechnical engineering.The study results show that the intermediate principal stress effect and its range is an important characteristic for rock strength and has been considered as one basic problem for proposing a new failure criterion;a better solution more consistent with actual situations can be obtained by using unified strength theory with taking combined effects of more complex factors into account.
展开▼
