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基于线性损伤理论,在确立混凝土和钢筋材料的损伤指标计算模型的基础上,通过引入加权系数,实现了从材料到钢筋混凝土构件截面、构件、楼层及框架结构损伤指标的计算;并按我国现行规范设计了一个位于抗震设防烈度为8度区的5层钢筋混凝土框架结构;采用Open Sees软件按上述基于材料的钢筋混凝土整体结构的损伤评估方法对其进行了增量动力分析及损伤评估。计算结果表明:采用基于材料的损伤模型计算方法,不仅能够很好地预测多层钢筋混凝土框架结构在地震作用下的损伤发展过程,还能很好地评估多层钢筋混凝土框架结构在地震作用下的损伤状态。
Based on the linear damage theory, on the basis of establishing the calculation model of damage index of concrete and steel bar materials, the calculation of the damage index from material to reinforced concrete member section, component, floor and frame structure is achieved by introducing the weighting coefficient. A 5-story reinforced concrete frame structure with a seismic fortification intensity of 8 degree is designed and designed. The incremental dynamic analysis and damage assessment are carried out by the Open Sees software according to the damage assessment method of the above mentioned material-based reinforced concrete structure. The calculation results show that the material-based damage model can not only predict the damage process of multi-story RC frame under earthquake but also evaluate the influence of earthquake on the RC frame structure Damage status.