人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
17期
89-93
,共5页
苏观南%孔庆梅%梁睿斌%沈寿亮
囌觀南%孔慶梅%樑睿斌%瀋壽亮
소관남%공경매%량예빈%침수량
模糊可拓模型%大坝变形%熵权法%物元特征权重
模糊可拓模型%大壩變形%熵權法%物元特徵權重
모호가탁모형%대패변형%적권법%물원특정권중
fuzzy extension model%dam deformation%entropy method%weights of matter-element characteristics
传统模糊可拓模型在大坝工作性态评价中,一般通过主观赋权法来确定物元特征的权重,而忽视了客观因素的影响。将同级的物元特征(即同级评价指标)关联度组成原始数据矩阵,再利用熵权法计算出该级物元特征的权重,而对于最底层的物元特征值则仍采用简单关联函数法确定权重,由此提出了一种改进的多级模糊可拓评价模型。随后选取某混凝土重力拱坝的3个典型坝段的变形性态进行评价,所得结果与实际情况相符,表明改进的多级模糊可拓方法可用于大坝工作性态的评价,且能避免人为确定权系数所造成的主观误差。
傳統模糊可拓模型在大壩工作性態評價中,一般通過主觀賦權法來確定物元特徵的權重,而忽視瞭客觀因素的影響。將同級的物元特徵(即同級評價指標)關聯度組成原始數據矩陣,再利用熵權法計算齣該級物元特徵的權重,而對于最底層的物元特徵值則仍採用簡單關聯函數法確定權重,由此提齣瞭一種改進的多級模糊可拓評價模型。隨後選取某混凝土重力拱壩的3箇典型壩段的變形性態進行評價,所得結果與實際情況相符,錶明改進的多級模糊可拓方法可用于大壩工作性態的評價,且能避免人為確定權繫數所造成的主觀誤差。
전통모호가탁모형재대패공작성태평개중,일반통과주관부권법래학정물원특정적권중,이홀시료객관인소적영향。장동급적물원특정(즉동급평개지표)관련도조성원시수거구진,재이용적권법계산출해급물원특정적권중,이대우최저층적물원특정치칙잉채용간단관련함수법학정권중,유차제출료일충개진적다급모호가탁평개모형。수후선취모혼응토중력공패적3개전형패단적변형성태진행평개,소득결과여실제정황상부,표명개진적다급모호가탁방법가용우대패공작성태적평개,차능피면인위학정권계수소조성적주관오차。
When the traditional fuzzy extension model is used to appraise the dam behavior, weights of matter-element char-acteristics are usually determined by subjective weighting method, but the influence of objective factors is ignored. Through incor-porating the relation grade of matter-element characteristics with the same level into an original data matrix, calculating the weights of matter-element characteristics with entropy method, and determining the value of matter-element characteristics in the bottom with the simple correlation method, an improved multi -stage fuzzy extension evaluation model is developed. The model is used to evaluate the deformation behavior of three typical dam sections of a concrete gravity arch dam, and the simulated result is consistent with the actual situation. It is indicated that the improved multi-stage fuzzy extension method is helpful and its application can effectively avoid the subjective errors caused by human factors.