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本文优化了几种液化判别方法的判别式;提出了度量液化判别可靠性的可信度概念;应用 Shannon 信息论原理,建议了综合评价液化判别式优劣的方法;用概率方法研究了土性和地震动特性两方面的不确定性对液化判别的影响,对仅考虑土性不确定性的情况,提出了以可信度为权值的加权平均液化概率方法,对同时考虑土性和地震两方面不确定性的液化危险性分析,发展了三种算法。同时,给出了算例说明本文方法的应用。
In this paper, the discriminants of several liquefaction discriminating methods are optimized; the concept of credibility of liquefaction discriminating reliability is proposed; the Shannon information theory principle is used to propose a method for comprehensive evaluation of the advantages and disadvantages of liquefaction discriminants; The influence of uncertainty in two aspects of the ground motion characteristics on the liquefaction discrimination, considering only the case of soil uncertainty, proposes a weighted average liquefaction probability method that takes the credibility as the weight value to consider both the soil property and the earthquake. In terms of liquefaction risk analysis of uncertainties, three algorithms have been developed. At the same time, an example is given to illustrate the application of this method.