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为研究型钢再生混凝土柱地震损伤性能,本文依据17个试件低周反复荷载试验研究结果,将型钢再生混凝土柱划分为正常使用、暂时使用、修复后使用、生命安全和防止倒塌五个状态水平;以层间位移角作为该柱抗震性能控制指标,对试验数据进行数理统计分析,确定型钢再生混凝土柱不同性能水平下量化指标取值;结合型钢再生混凝土柱受力特征,对修正的ParkAng损伤模型进行改进,确定构件单调荷载下极限变形计算方法;采用多变量回归方法得到耗能因子的计算式,并分析设计参数对型钢再生混凝土柱耗能能力的影响规律,最终建立型钢再生混凝土柱基于变形和累积耗能的地震损伤模型,结果表明:型钢再生混凝土柱在破坏状态时的损伤指标计算平均值为0.986,接近1.0,离散性较小;故该损伤模型用于评价型钢再生混凝土柱的地震损伤性能是可行的;在此基础上,建立了型钢再生混凝土柱不同状态水平与损伤指数的对应关系,并确定了相应的损伤指数取值。上述结论可为型钢再生混凝土柱的抗震性能设计和地震损伤评估提供参考。
In order to study the seismic damage performance of SRC columns, based on the results of 17 low-cycle cyclic loading tests, the SRC columns are divided into five levels: normal use, temporary use, re-use, life safety and prevention of collapse Taking the displacement angle between layers as the control index of the seismic performance of the column, the test data were analyzed by mathematical statistics to determine the quantitative indexes under different performance levels of the reclaimed concrete columns. Based on the mechanical characteristics of the reclaimed concrete columns, the corrected ParkAng injuries Model was improved to determine the limit deformation under monotonic load. The multivariate regression method was used to calculate the energy dissipation factor. The influence of design parameters on the energy dissipation capacity of steel reinforced recycled concrete columns was analyzed. Finally, Deformation and cumulative energy dissipation of the earthquake damage model. The results show that the average damage index of deformed steel reinforced concrete columns in damaged state calculated is 0.986, which is close to 1.0, and the discreteness is small. Therefore, the damage model is used to evaluate the performance of recycled steel reinforced concrete columns Earthquake damage performance is feasible; on this basis, established Steel reproduction levels corresponding relationship between the different states of the concrete column damage index, and determines the corresponding value of damage index. The above conclusions can provide references for the design of seismic performance of reinforced concrete columns and the assessment of earthquake damage.