【摘要】 为了提高钢混结构地震损伤评估的可靠性和实用性,运用突变理论,提出了地震损伤评估的突变模型。该模型以整体损伤指数、滞回耗能循环次数、最大层间位移角和楼层能量集中系数作为评价指标,建立钢筋混凝土结构地震损伤性能评价标准;对各评价指标赋值及标准化,选取相应的突变模型计算出每个结构地震损伤的总突变值,并与钢筋混凝土结构地震损伤性能评价标准比较和分析,从而判别结构损伤程度。通过4种不同结构计算并与可变模糊集方法、集对理论方法等进行比较分析,本文评估结果与其他方法的评估结果基本一致,验证了该模型的合理性和可靠性;该模型更为简单,避免了权重确定中的主观性和随意性。更多还原

【Abstract】 In order to improve the readability of earthquake damage assessment to reinforced concrete structure,the catastrophe model for earthquake damage assessment is established using the catastrophe theory.Firstly,internal damage index,number of inelastic cycles,maximum inter-story drift and energy-concentrated quotient are taken as evaluation factors.The evaluation criteria of seismic damage to reinforced concrete structure is established.Value assignment and standardization of each evaluation index is conducted.The appropriate mutation model is selected to calculate the total mutation value of seismic damage and comparison with the evaluation criteria of seismic damage of reinforced concrete structure.Thus,the degree of structural damage is determined.Four different structures are calculated.The results are compared with the ones of variable fuzzy set theory,set-pair theory.The evaluation results of the four methods are basically the same.It verifies the reasonableness and effectiveness of the method.The model is simple.It avoids subjectivity and arbitrariness in the determination of the weight.更多还原