CAJ | 학술논문

　　传统有限元强度折减法在边坡稳定性数值分析中取得了一定的成功，但由于未考虑岩土体材料参数的变异性等不确定性因素，尚不能直接应用于边坡稳定性特别是动力稳定性可靠性分析问题。为此提出了基于有限元强度折减法的地震边坡动力稳定性可靠性分析方法。将有限元极限分析法、动力分析法和可靠性分析法三者耦合，分析求解边坡在地震作用下的动力稳定性可靠性问题，并将这一过程在数值计算程序中得以实现。在计算分析过程中，克服了原方法需不断人工试算才能得到边坡安全系数而无法量化处理问题，并对边坡动力失效准则进行了适用于程序化的改进，使其计算过程完全实现自主运行。结合典型算例分析结果表明，该方法显著的特点是能较全面地反映岩土体的动力特性和边坡岩土体材料强度参数的变异性及相关性，所得结果相对更加合理且更符合工程实际。该方法既是对有限元强度折减法的应用范围的有益推广，也为边坡动力稳定性可靠性问题研究提供了一条新的有效途径。
　　전통유한원강도절감법재변파은정성수치분석중취득료일정적성공，단유우미고필암토체재료삼수적변이성등불학정성인소，상불능직접응용우변파은정성특별시동력은정성가고성분석문제。위차제출료기우유한원강도절감법적지진변파동력은정성가고성분석방법。장유한원겁한분석법、동력분석법화가고성분석법삼자우합，분석구해변파재지진작용하적동력은정성가고성문제，병장저일과정재수치계산정서중득이실현。재계산분석과정중，극복료원방법수불단인공시산재능득도변파안전계수이무법양화처리문제，병대변파동력실효준칙진행료괄용우정서화적개진，사기계산과정완전실현자주운행。결합전형산례분석결과표명，해방법현저적특점시능교전면지반영암토체적동력특성화변파암토체재료강도삼수적변이성급상관성，소득결과상대경가합리차경부합공정실제。해방법기시대유한원강도절감법적응용범위적유익추엄，야위변파동력은정성가고성문제연구제공료일조신적유효도경。
The traditional strength reduction finite element method (SRFEM) is widely used in numerical analysis of slope stability. However, for the lack of considering geotechnical uncertainties, it still cannot be directly applied to the reliability analysis of slope stability, especially the dynamic stability problems. Thus, based on the SRFEM, the reliability analysis method of slope dynamic stability under seismic loading is proposed. In this method, the finite element limit analysis, dynamic analysis and reliability analysis are included to analyze the reliability problems of slope under seismic loading; and above process is realized in the numerical calculation program. For the traditional method, the acquirement of slope safety factor should be based on continuous manual pilot calculations, which makes batch processing impossible. But in the proposed method, above problem is solved through the improved slope dynamic failure criterion and the corresponding calculation program. The case study shows that the proposed method is significantly different from the general methods; it can relatively comprehensively reflect the dynamic characteristics of rock mass, the variability and correlation of material parameters. The results are closer to the reality. The proposed method not only widens the application scope of SRFEM, but also provides a new effective way for the reliability analysis of slope dynamic stability.