【摘要】 鉴于我国20世纪50年代以来,地震液化现场很少有黄土液化的实例,而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。为工程设计准确预测饱和黄土在设计地震动的作用下是否会液化,本文用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液化判别,并以此结果为依据检验规范判别式对黄土液化判别的适用性。结论证实用Seed-Idriss简化判别法结果检验规范方法对黄土的适用性是可行的,规范方法对于黄土液化判别过于保守。更多还原

【Abstract】 There is few seismic liquefied loess site in China since 1950s.However,saturated loess,including loess with high moisture content,has a high liquefaction potential and flow pattern damage potential.In order to predict the saturated loess site under design ground motion to be liquefied accurately for engineering design,Seed’s simplified procedure is used to estimate the liquefaction potential of saturated loess and sand of a civilian airport in Lanzhou,and the applicability of the method for estimating liquefaction potential of sandy soils in Chinese seismic design code for loess will be tested.The results show that the method of applicability test in this paper is reasonable and practical and the method for estimating liquefaction in Chinese seismic design code is too conservative for loess.更多还原