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选择屈服准则是岩土工程数值分析重要环节。目前主流的数值分析软件主要采用MohrCoulomb准则、内接圆Druker-Prager准则、外接圆Druker-Prager准则和Zienkiewicz-Pande准则。分析了各个屈服准则的优缺点,并将其分别应用于某地下厂房洞室群开挖稳定分析,通过对比边墙位移、拱顶沉降、水平应力、垂直应力、塑性破坏区指标,研究岩土工程数值分析中采用不同屈服准则对洞室稳定性的影响。
Choosing yield criterion is an important part of geotechnical numerical analysis. At present, the mainstream numerical analysis software mainly adopts MohrCoulomb criterion, inscribed circle Druker-Prager criterion, circumcircle Druker-Prager criterion and Zienkiewicz-Pande criterion. The advantages and disadvantages of each yield criterion are analyzed and applied to the stability analysis of cavern group excavation in an underground powerhouse respectively. By comparing the displacement of side wall, vault settlement, horizontal stress, vertical stress and plastic damage zone, Influence of Different Yield Criteria on Stability of Cavern in Numerical Analysis of Engineering.