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邱冬瑞1，呂天啟1，薛 祥2
(1北京市建筑工程研究院，北京100039; 2北京市勘察設(shè)計研究院有限公司，北京100038)[摘要] 本文綜合考慮模糊綜合判別與結(jié)構(gòu)力學(xué)模型的方法，對既有輕鋼結(jié)構(gòu)進(jìn)行抗震安全級別鑒定。具體來說，就是通過對結(jié)構(gòu)的力學(xué)模型分析，為結(jié)構(gòu)及模糊評判結(jié)果提供定性工程判斷；通過確定影響結(jié)構(gòu)安全性模糊變量的隸屬度，形成損傷或破壞因素的評判矩陣，采用三級模糊推理邏輯運算，判定輕鋼結(jié)構(gòu)的抗震安全性，此為定量評判。本方法對輕鋼結(jié)構(gòu)抗震安全級別的綜合評判有工程實際意義，有利于輕鋼結(jié)構(gòu)抗震鑒定工作的標(biāo)準(zhǔn)化、規(guī)范化和科學(xué)化。
[關(guān)鍵詞] 輕鋼結(jié)構(gòu)；抗震鑒定；模糊綜合評判；力學(xué)模型Fuzzy comprehensive evaluation method in the existing light steel structure's seismic evaluation
Qiu Dongrui1, Lu Tianqi1, Xue Xiang2
(1 Beijing Building Construction Research Institute, Beijing 100039, China; 2 Beijing Geotechnical Institute Co.,Ltd., Beijing 100038, China)Abstract: In this paper, considering fuzzy comprehensive evaluation and structural mechanics model, evaluate the seismic safety level of the existing light steel structure. Specifically, through analysis of the mechanical model of structure, determine qualitative engineering judgment for structure and qualitative results of fuzzy evaluation. By identifying the membership degree of impacting structural safety fuzzy variables, form evaluation matrix of factors of injury or damage, by three-stage fuzzy inference logic operations, determine the seisnuc safety oflight steel structure, which is quantitative evaluation. This method of comprehensive evaluation for light steel structure's seismic safety level has practical significance and is conducive to be standardized and scientific for seismic identification work oflight steel structure.
Keywords: light steel structure; seismic evaluation; fuzzy comprehensive evaluation; mechanical model
