针对已有平动-转动组合破坏机构存在的问题,依照相关联流动法则和内外能耗守恒原理,结合强度折减技术,改进已有破坏机构,同时提出一种便于工程应用的直线滑动破坏机构,推导上述2种破坏机构极限上限分析计算公式。研究结果表明:基于改进后平动-转动组合破坏机构和直线滑动破坏机构计算所得安全系数和潜在滑动面与数值分析结果吻合良好,验证了此分析方法的正确性和有效性,研究成果可为相关工作提供参考和借鉴。
For the existing problems of rotation - translation combination mechanism, the existing failure mode was improved in this paper with strength reduction technique based on associated flow rule and upper bound theorem. Meanwhile, a linear sliding mechanism model convenient to the application of practical engineering was proposed, and the upper bound computational formulas of safety factors for slope were derived with the two combination mechanism according to the associated flow rule and the internal and external energy conservation principle. Through an example presented in the paper, the results between the mathematical calculation and FLAC3D numerical analysis were compared to verify the accuracy and availability of the safety factors with the proposed new method and potential slide surface. The results can provide reference for the similar engineering.