结构动力反应与震害关系的模糊识别

FUZZY IDENTIFICATION BETWEEN DYNAMIC RESPONSE OF STRUCTURE AND STRUCTURAL EARTHQUAKE DAMAGE

本文运用信息分配原理和模糊近似推理方法,提出了一个利用结构地震反应进行地震震害预测的方法。该方法既考虑了结构地震反应的理论计算,又充分正视了现有震害资料具有模糊性的特点,粗细结合,较为合理。作为实例,本文分析了唐山地震Ⅷ度区砖柱单层厂房地震反应与震害的模糊关系。研究结果表明,用本文提供的方法进行震害预测,可以使误差大大减小。在资料缺乏的情况下,作为近似估计,还可将模糊关系的烈度范围进行扩展。

An earthquake damage prediction method of structures is presented in this paper using the principle of information distribution and fuzzy deduction. This method considers not only theoretical calculation of earthquake response of structure but also fuzzy character of earthquake damage of structure. As an example, the author analysed fuzzy relationship between earthquake response and earthquake damage of brick column single story factory building in the area with intensity of Ⅷ during Tangshan earthquake 1976. The result indicates that the method for earthquake damage prediction of structure suggested in this paper may reach minimum error. In the case of lack of data the fuzzy relation could be extended to other earthquake intensity district.