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本文根据费歇准则确定了估算液化势的线性方程式的系数。对有因次和无因次表达式、线性和非线性模式以及临界值的规定方法作了比较计算。利用精度较高的非线性判别法,将我国的地震现场勘测资料与国外通用的类似资料一起进行判别分析,确定了判别砂土液化势的公式。还利用海城和唐山地震的现场勘测资料提出了判别轻亚粘土液化势的公式。
In this paper, the coefficient of linear equation for estimating liquefaction potential is determined according to the Fisher criterion. Comparisons have been made to the method of defining both positive and negative factors, linear and non-linear models, and thresholds. Using the high accuracy non-linear discriminant method, the seismic field survey data in our country are discriminated and analyzed with the similar data in foreign countries to determine the formula to determine the liquefaction potential of the sand. Based on the field survey data of Haicheng and Tangshan earthquakes, a formula for judging the liquefaction potential of light sub-clay is also proposed.