【摘要】 最近的研究结果表明饱和黄土甚至高含水率的黄土也具有很高的液化势和流态破坏势,而工程设计时关于黄土液化的判别,尚无统一标准,亦无经验可循。用Seed-Idriss简化判别法对兰州某民用机场的饱和黄土和砂土进行了液化判别,并以此结果为依据检验了现有剪切波速判别式对黄土液化判别的适用性。结论显示该场地的黄土剪切波速值过大,《岩土工程勘察规范》与Andrus和Stokoe剪应力比法都不适用。更多还原

【Abstract】 Recent studies show that saturated loess,even loess with high moisture content,also have a high liquefaction potential and flow pattern damage potential.But for evaluating liquefaction resistance of loess in engineering design,there is no uniform standards,and no experience to follow.Seed’s simplified procedure was used to discriminate liquefaction of saturated loess and sand of a civil airport in Lanzhou in this paper,and applicability of method for liquefaction discrimination based on shear wave velocity for loess was be tested.The results show that the shear wave velocity of this loess site is too large,the method for discriminating liquefaction in Chinese geotechnical code and Andrus-Stokoe’s shear stress ratio method are all not applicable to loess.更多还原