模糊数学在西北地区场地震害预测中的应用

本文收集了西北地区大量的震害资料及实验室试验结果,利用信息分配,模糊综合评判及信息集中等原理建立了一套适用于西北地区的场地震害的预测方法。文中将场地分为三类:稳定区、基本稳定区和不稳定区。以地形地貌、土的液化、土的震馅、人工填土的厚度、软土(厚度大于0.3米)的埋深以及边坡稳定性等六个因素作为评价的指标。用这套方法对宝鸡、西安两市的一些场地震害进行了评价计算,其结果与宏观分析的结果一致。

APPLICATION OF FUZZY MATHEMATICS IN PREDICTION OF NORTHWESTERN SITES DAMAGE

In this paper, we are rolling in damage data and the results of a laboratory tests. A set of predictable method that is satisfactory to China''s Northwestern sites damage are established with the principles of information distribution, fuzzy multifactorial evaluation and information concentration. Site is classified into three sorts:stable region, stable region in the main and non-stable region. Evaluated paramenters are geography and geomorphology, soil liquefaction potential, loess settlement, the thickness of artificial filled soil, the depth of soft soil and slope stability. The damages of a few sites of Xian and Baoji Cities are evaluated by this method. And its results are in keeping with those of macrosopic analysis. This paper provide the prediction of China''s Northwestern sites damage with a kind of quantitive research method. At same time, it is of importance to research of seismic microzonation.